按摩腰带的主机

测斜模块支架

电动车充电口安装座

Acceleration sensor simulation method applied to IBC system

The embodiment of the invention discloses an acceleration sensor simulation method applied to an IBC system, and the method comprises the steps: obtaining vehicle signals of a controller in a vehicle at all moments through a CAN bus under the condition that the vehicle runs on a ramp, and obtaining the angular speeds of wheels at all moments through a wheel speed sensor; calculating the vehicle speed and the vehicle acceleration along the ramp at each moment according to the wheel angular velocity at each moment; calculating the ramp resistance at each moment in real time according to the vehicle parameters corresponding to the vehicle signal at each moment, the wheel angular velocity and the vehicle speed and the vehicle acceleration along the ramp: decomposing the vehicle acceleration along the ramp at each moment according to the ramp resistance at each moment to obtain the vehicle acceleration along the horizontal direction and the vertical direction at each moment; the function of ...

Portable paintbrush cleaning and arranging device for art design drawing

The invention is applicable to the field of paintbrush cleaning, and provides a portable paintbrush cleaning and arranging device for art design drawing, which comprises a box body, a rotating column, a cleaning box, a first connecting pipe, a connecting sleeve, a sliding rod, a clamping mechanism, a reciprocating swing mechanism and a water pumping assembly, and a top plate is fixed at an opening of the box body; the cleaning box is fixed on the top plate, a water storage tank and a sewage tank are fixed in the box body, the cleaning box is communicated with the sewage tank through a first connecting pipe, and a check valve is arranged on the first connecting pipe; the number of the water storage tanks is two, and the two water storage tanks are communicated through a connecting sleeve. The water storage tank communicates with the cleaning tank through the water pumping assembly, and the sliding rod is slidably connected to the top plate. The brush cleaning device drives the bristle end ...

Self-adaptive equipment security risk assessment method, device, equipment and system

The invention provides a self-adaptive equipment security risk assessment method, device, equipment and system. The method comprises the following steps: receiving a security risk assessment task; determining a target relay module matched with the security risk assessment task; the central platform establishes communication connection with the target relay module, and sends the target address to the target relay module, so that the target relay module establishes communication connection with the tested target according to the target address, and sends monitoring port information of the tested target to the central platform; under the condition that the security evaluation scanning request is monitored, forwarding the security evaluation scanning request to a monitoring port of a detected target through a target relay module according to monitoring port information of the detected target, and receiving scanning result data returned by the detected target through the target relay module; ...

Engineering intelligent evaluation method, system and device based on big data and storage medium

The invention relates to the field of engineering cost, in particular to an intelligent engineering evaluation method, system and device based on big data and a storage medium, and the method comprises the steps: selecting a cost node, and inputting engineering cost parameters based on the selected cost node, traversing a cloud database based on the project project details to call corresponding project cost data stored in the cloud database, the project cost data including various project cost budget data; and estimating the engineering cost condition of the engineering project based on the called various engineering cost budget data, and generating an engineering cost scheme based on the engineering cost condition. According to the invention, the accuracy and efficiency of cost evaluation can be improved.

Wind tunnel test device simultaneously using sub-transonic velocity flow field optimal region

The invention discloses a wind tunnel test device simultaneously using sub-transonic flow field optimal regions, and belongs to the technical field of aviation aerodynamic wind tunnel tests. The device comprises a wind tunnel test section and a model support section, the downstream end of the wind tunnel test section is a super-expansion section, the super-expansion section is provided with the model support section, and the wind tunnel test section can be respectively applied to a subtransonic speed test and a supersonic speed test. The research and development aim of the invention is to solve the problem that a model protection mechanism is needed due to large impact load on a model during driving in a supersonic speed test of a transient wind tunnel, and the problem of position movement in a model rotation process also needs to be solved when a connecting rod mechanism form is adopted. The wind tunnel test section can be applied to a subtransonic speed test and a supersonic speed test ...

Monitoring system for foundation pit supporting axial force

The invention provides a monitoring system for supporting axial force of a foundation pit. The supporting module can move on the ground outside the foundation pit; the extension module is fixed on the supporting module; one end of the extension module movably extends towards the interior of the foundation pit; the detection module is fixed on the extension module and is used for abutting against the outer shaft wall of the supporting shaft to detect the vibration condition of the supporting shaft; and the judging module is used for judging the horizontal axial force of the supporting shaft based on a preset monitoring value set and an actual monitoring value set of the vibration condition of the supporting shaft. The condition of the supporting shaft in the foundation pit is automatically and accurately monitored, and reliable monitoring data are provided.

Pipeline crane for engineering based on intelligent sensing and method thereof

The invention discloses an engineering pipeline crane based on intelligent sensing and a method thereof, and relates to the related field of hoisting equipment.The engineering pipeline crane comprises a hoisting crown block, bottom moving wheels of the hoisting crown block and top sliding rails of an existing portal frame are arranged in a sliding mode, and a sensing control assembly is arranged on the bottom side of a hoisting rope; the first fixing ring nails and the first mounting steel beams are driven by the hoisting rope to perform height adjustment action, and then the distance between the two groups of first mounting steel beams is adjusted through the axial adjusting air cylinder, so that the hoisting device can adapt to hoisting of pipelines with different lengths; then a stepping motor is controlled to drive a second winding drum to extend a fixing rope, a worker pulls the fixing rope to bind the pipeline by multiple turns, at the moment, the limiting and protecting effects can ...

Hydraulic pulse generator for well drilling

The invention relates to the technical field of underground drilling wireless transmission, in particular to a hydraulic pulse generator for drilling. Two vertically symmetrical fixing plates are fixedly connected to the two side faces of a barrel, each fixing plate is hollow, a rotating rod movably penetrates through the right side face of each fixing plate, a threaded sleeve is rotationally connected to the lower surface of each fixing plate through a bearing, and each rotating rod is in transmission connection with the corresponding threaded sleeve. A threaded shaft is in threaded connection with the interior of the threaded sleeve and movably connected with the motor in an abutting mode. The bottom end of the threaded shaft is fixedly connected with an anti-skid plate, and the end, away from the threaded shaft, of the anti-skid plate is fixedly connected with an anti-skid pad. In order to solve the problem that vibration can be generated when the motor works, a motor stabilizing device ...

CRADLE HEAD CONTROL METHOD AND CONTROL DEVICE

Disclosed by the present invention are a control method and control device for a cradle head (100), the control method for the cradle head (100) comprising: after a processor (100) completes upgrading, acquiring a joint angle of a shaft of a cradle head (100); determining whether the joint angle of the shaft is within a first preset joint angle range; when the joint angle of the shaft is not within the first preset joint angle range, adjusting the joint angle of the shaft to be within the first preset joint angle range. Further disclosed by the present invention is a control device (10) for a cradle head.

遥控器

功放解码器

分段式仪表板横梁

Light underwater mowing boat

The utility model relates to the technical field of underwater mowing ships, and discloses a light underwater mowing ship which comprises a ship body, a connecting cylinder is fixedly communicated with the left side of an inner cavity of the ship body vertically upwards, an air cylinder is fixedly connected with the middle position of the upper portion of the connecting cylinder vertically downwards, and the lower end of a piston rod of the air cylinder is fixedly connected with the middle position of the upper portion of an inverted-concave support. A movable circular plate is horizontally and fixedly connected to the bottom of the inverted-concave-shaped support, and a rubber ring is fixedly bonded to the outer wall of the movable circular plate. When aquatic plants need to be cut, when the air cylinder works to drive the movable circular plate to descend, the net disc and the cutting blade are driven to descend and stretch out, then the double-shaft motor works to drive the transmission ...

Electronic signal flare of rocket parachute

The invention discloses a rocket parachute electronic signal detonator, the electronic signal detonator comprises an electronic signal part and a fuel gas power part, the electronic signal part comprises an upper barrel, an electronic light-emitting assembly, a parachute and an energy assembly, the electronic light-emitting assembly and the energy assembly are both arranged in the upper barrel, and the fuel gas power part is arranged in the upper barrel. The electronic light-emitting component can be screwed out from the top end opening of the upper barrel; the parachute is folded between the energy assembly and the electronic light-emitting assembly and connected with the electronic light-emitting assembly through a parachute rope. The fuel gas power part comprises a lower barrel, an impact type ignition device, an ignition grain and a rocket propelling grain. According to the invention, a two-section structure is adopted, the main body function part can be used and managed as a common ...

Water level observation device for hydrogeological exploration

The invention discloses a water level observation device for hydrogeological exploration, and belongs to the technical field of geological exploration equipment, the water level observation device comprises a hoisting mechanism, a sampling mechanism and a storage mechanism, the hoisting mechanism is provided with a hoisting seat, the sampling mechanism is provided with a side box and a collection assembly, and the storage mechanism is provided with a storage box and a display assembly. The hanging mechanism is rotatably installed above the side box, each group of storage boxes is fixedly installed on the side face of the side box, each group of storage boxes is provided with a plurality of storage boxes, the storage boxes and the side box are connected through the display assembly, a flower-shaped opening is formed in the lower portion of the side box, and the collection assembly is installed in the flower-shaped opening of the side box. The collecting assembly is connected with the display ...

Small automatic electric rail web grinding machine

The invention discloses a small automatic electric rail web grinding machine which comprises a fixed seat and a joint assembly, the fixed seat is clamped and fixed to the bottom of a guide rail, the joint assembly comprises a first joint arm and a second joint arm, the first joint arm is hinged to the second joint arm, and the other end of the first joint arm and the fixed seat are rotationally installed; a profiling grinding wheel assembly is mounted at the other end of the second articulated arm; the profiling grinding wheel assembly comprises a limiting disc connected to the bottom of the shaft base in a sleeving mode, the limiting disc is in press fit with the edge of the top face of the track, the inner side of the shaft base movably penetrates through the driving shaft and the limiting disc, and a profiling grinding wheel is fixed to the inner side of the shaft base. A driven belt wheel is fixed at the top of the driving shaft; the driven belt wheel and a power driving assembly fixed ...

METHOD FOR SWITCHING OPERATING MODE OF GIMBAL, AND CONTROLLER AND IMAGE STABILITY AUGMENTATION DEVICE

A method for switching the operating mode of a gimbal, and a controller and an image stability augmentation device. The method comprises: determining that a gimbal needs to be switched from a first operating mode to a second operating mode; acquiring the measured attitude of the gimbal and determining the desired attitude of the gimbal according to the measured attitude; and controlling the gimbal to switch from the first operating mode to the second operating mode while maintaining the desired attitude. In this way, a camera device mounted on the gimbal can be prevented from rotating while the operating mode of the gimbal is switched, so that transition between different photographing states of the gimbal can be realized and continuous-shot photography can be achieved.

FIELD-EFFECT TRANSISTOR AND MANUFACTURING METHOD THEREOF, ARRAY SUBSTRATE AND MANUFACTURING METHOD THEREOF, AND DISPLAY PANEL

Provided are a field-effect transistor and a manufacturing method thereof, an array substrate and a manufacturing method thereof, and a display panel. The manufacturing method of a field-effect transistor comprises: forming an active layer (2) at a substrate (1); forming a gate insulating layer (3) at the active layer to define a gate region, a source region and a drain region, the source region and the drain region being located at two sides of the gate region; applying a gate layer (4) to cover surfaces of the active layer and the gate insulating layer; patterning the gate layer to form a first contact electrode (41), a second contact electrode (42) and a gate electrode (40), wherein the first contact electrode is located at the source region, the second contact electrode is located at the drain region, and the gate electrode is located at the gate insulating layer.

PTC (Positive Temperature Coefficient) liquid heating core body and PTC liquid heating assembly

The utility model provides a PTC (Positive Temperature Coefficient) liquid heating core body and a PTC liquid heating assembly, which solve the technical problems of heavy weight, low heat exchange efficiency and the like of the existing product, and are provided with a first liquid flow channel unit and a second liquid flow channel unit which are stacked from top to bottom; the first liquid flow channel unit is provided with a first shell and a second shell, the first shell and the second shell form a first sealing liquid flow channel, the first shell is provided with a first inlet and a first outlet, and the first sealing liquid flow channel guides a flowing medium of the first inlet to the first outlet; the second shell is provided with a second inlet and a second outlet; the second liquid flow channel unit is provided with a third shell and a fourth shell, the third shell and the fourth shell form a second sealing liquid flow channel, the third shell is provided with a third inlet and ...

Preparation method of bamboo shoot enzyme powder

The invention relates to a preparation method of bamboo shoot enzyme powder. Adding the strain freeze-dried powder into a sterilized MRS liquid culture medium, placing the MRS liquid culture medium in a constant-temperature shaking table for culturing, then inoculating the MRS liquid culture medium for re-culturing, and refrigerating for later use; soaking, cleaning and drying bamboo shoots, adding pure water according to a material-liquid ratio, and homogenizing to obtain bamboo shoot homogenate; adding enzyme into the bamboo shoot homogenate for enzymolysis to obtain bamboo shoot enzymatic hydrolysate; fermenting the bamboo shoot enzymatic hydrolysate to obtain fermentation liquor; and mixing the fermentation liquor with a protective agent, and performing freeze vacuum drying to obtain the bamboo shoot enzyme powder. According to the preparation method disclosed by the invention, the enzyme with relatively high viable count is fully retained while relatively high SOD enzyme activity is ...

High-definition video generation method and system based on super-division model

The invention relates to the technical field of video processing, and provides a high-definition video generation method and system based on a super-resolution model, and the method comprises the steps: obtaining a high-definition key frame and a low-resolution video stream, carrying out the feature extraction, and inputting the features into the super-resolution model; the extracted features are propagated in a grid propagation mode, and the reference frame features are propagated to a center frame after being subjected to optical flow distortion; aligning the reference frame with the center through an optical flow guided deformable convolution method; after the reference frame and the center frame are aligned, feature splicing is carried out, and feature fusion is completed through a plurality of continuous residual blocks; and obtaining final feature mapping through an attention filter based on the fused features, carrying out up-sampling through a pixel shuffling layer so as to obtain ...

Synthesis method of dimorpholinyl diethyl ether

The invention belongs to the field of synthesis of compounds, and particularly discloses a synthesis method of dimorpholinyl diethyl ether, which comprises the following steps: a, preparation of an alkaline earth metal and silver dual-modified copper-based catalyst: mixing copper nitrate, silver nitrate, alkaline earth metal nitrate, deionized water and a biomass binder, then adding pseudo-boehmite, grinding and kneading to obtain a mixture A; and extruding, drying and roasting to obtain the alkaline earth metal and silver dual-modified copper-based catalyst. Loading into a fixed bed reactor, and activating in a hydrogen atmosphere; b, mixing morpholine and diethylene glycol according to the molar ratio of (2-4): 1 to serve as raw materials, and enabling the raw materials to enter the fixed bed reactor at the air speed of 0.3-1.0 h <-1 > for reaction; and c, rectifying the reaction liquid discharged from the fixed bed reactor to separate the dimorpholinyl diethyl ether. The method has the ...

OTA upgrading method and system of network terminal equipment

The invention discloses an OTA upgrading method and system for network terminal equipment, and the method comprises the steps: a scheduling control service module receives routing data sent by a plurality of OTA terminals, determines an upgrading strategy according to the routing data, divides the plurality of OTA terminals into a first OTA terminal and a second OTA terminal, obtains upgrading firmware data from a CDN service system through the first OTA terminal, and sends the upgrading firmware data to a CDN service system through the second OTA terminal; and the second OTA terminal obtains the upgrade firmware data from the first OTA terminal. The system comprises an OTA server and a plurality of OTA terminals. According to the method, the problem that the corresponding hardware cost is increased for massive requests because the requests of the upgrade package file of the existing OTA technology are all obtained from the CDN service system is effectively solved, and the method has the ...

Electric power cable stripping device for electric power engineering and use method of electric power cable stripping device

The invention discloses an electric power cable stripping device for electric power engineering and a use method thereof, and relates to the technical field of electric power engineering, and the stripping device comprises a fixed seat which is provided with a first stripping knife; the movable plate is located above the fixed seat, and the second stripping knife at the bottom of the movable plate corresponds to the first stripping knife up and down; wherein a fixing frame is mounted at the top of the fixing seat, a bolt extending up and down is inserted into the outer part of the fixing frame, and the bolt is in threaded connection with the fixing frame; and the bottom end of the bolt is connected with the movable plate. According to the power cable stripping device for the electric power engineering and the use method thereof, the movable plate (provided with the stripping knives) is adjusted to move up and down in a manner of rotating the bolts, so that the distance between the two stripping ...

PAN-TILT CONTROL METHOD AND APPARATUS, PAN-TILT, PHOTOGRAPHING DEVICE AND READABLE STORAGE MEDIUM

Disclosed is a pan-tilt control method, comprising the following steps: when a pan-tilt (20) passively rotates from a first position to a second position along a first direction, acquiring an expected position of the pan-tilt (20) during the rotation; determining, according to a rotation rule of a rotation area of the pan-tilt (20), a second direction from the second position to the expected position; and controlling the pan-tilt (20) so that same rotates from the second position to the expected position along the second direction. A pan-tilt control apparatus (10), a pan-tilt (20) and a photographing device 100 are further comprised.

PAN-TILT DEVICE AND CALIBRATION METHOD THEREFOR, UNMANNED AERIAL VEHICLE AND COMPUTING DEVICE

Disclosed is a pan-tilt device calibration method. The pan-tilt device comprises an inertial sensor and a joint electric motor. The method comprises: in response to determining that a state of the pan-tilt device meets a pre-set condition, measuring and updating a drift value of the inertial sensor; after joint angle deviation of the joint electric motor is calibrated, executing a joint angle center-return operation and recording the current joint angle; and controlling a target attitude of the pan-tilt device based on the current joint angle. According to the pan-tilt device calibration method provided in the embodiments of the present disclosure, after the inertial sensor and the joint angle are calibrated, the target attitude of the pan-tilt device is controlled based on the joint angle after the center-return operation, avoiding sudden variation of pan-tilt device attitude, thus avoiding phenomena such as shaking and jitter of the pan-tilt device.

Method for assisting xgboost parameter adjustment through support vector regression machine

The invention belongs to the field of artificial intelligence, and relates to a method for assisting xgboost parameter adjustment through a support vector regression machine, and the method comprises the steps: carrying out the parameter search through a random search mode; generating a plurality of records of different parameters and evaluation results, wherein the evaluation results are obtained by dividing the difference between a predicted value generated by xgboost and an actual value by the actual value; aiming at the records, corresponding models of different parameters and evaluation results are trained through a support vector regression machine svr algorithm, and the different parameters refer to parameters obtained by common parameters through a random search algorithm; then random search is carried out, an evaluation result is output through a support vector regression machine svr algorithm, an optimal result is selected from different results, the optimal result is a parameter ...

Structure and method for preventing differential settlement of underground pipe gallery deformation joint

The invention discloses a structure and method for preventing differential settlement of an underground pipe gallery deformation joint, and the structure comprises a pipe gallery main body structure, a waterproof layer wrapping the pipe gallery main body structure, and a sleeper beam arranged at the pipe gallery deformation joint below the pipe gallery main body structure. The longitudinal center line of the sleeper beam coincides with the center line of the deformation joint on the pipe gallery main body structure; column holes are formed in the positions, on the two sides of the center line of the sleeper beam, of the bottom face of the sleeper beam, short columns are arranged in the column holes, a grouting space exists between the upper ends of the short columns and the sleeper beam, a grouting pipe communicated with the grouting space is arranged on the sleeper beam, and the other end of the grouting pipe extends upwards to the position above a bottom plate of the pipe gallery body ...

Self-unlocking driving device and underwater mobile platform

The invention relates to a self-unlocking driving device which comprises a power part, a hydraulic oil cylinder, a clutch and an energy accumulator, and the power part is used for outputting power for a moving assembly to move. A piston rod of the hydraulic oil cylinder has an extending state and a retracting state. When the piston rod is in an extending state, the clutch is in a combined state, the transmission system is effectively connected with the power piece and the moving assembly, and power can be transmitted to the moving assembly through the clutch; when the piston rod is in a retracted state, the clutch is in a separated state, the transmission system is damaged, the power piece cannot transmit power to the moving assembly, and the moving assembly can roll in a free state. The energy accumulator is connected with a rod cavity of the hydraulic oil cylinder and can transfer high-pressure oil stored in the energy accumulator into the rod cavity, and after the high-pressure oil in ...

Low-power-consumption wireless sensor network information acquisition system

The invention discloses a low-power-consumption wireless sensor network information acquisition system, which comprises a sensor node used for monitoring and transmitting data information when the system collects information; the sink node is used for being connected with external networks such as a sensor network and the Internet, is high in capacity, can realize conversion of several communication protocols, and issues a management node detection task and forwards collected data to the external networks; the management node is used for receiving the data transmitted by the aggregation node, managing the data for users and issuing monitoring information; and the function module is used for realizing data information acquisition through a wireless sensor network. According to the invention, the structure of the wireless sensor network adopts a hierarchical structure, the expansibility is good, the problems of network congestion, low overall power consumption and high power consumption during ...

Intelligent door lock control method and device, computer equipment and storage medium

The invention relates to an intelligent door lock control method and device, computer equipment and a storage medium. The method comprises the steps of determining first identity information of a trigger object of a target event under the condition that the target event triggered for the intelligent door lock is detected; the target event is an event representing that a target place where the intelligent door lock is installed has a safety risk; if the first identity information indicates that the trigger object is different from an affiliation object of the intelligent door lock, determining the current position of the affiliation object; determining a safety prompt mode matched with the current position; and outputting a safety prompt about the target event according to the safety prompt mode. By adopting the method, the safety risk of the target place where the intelligent door lock is installed can be reduced, and the safety of the target place where the intelligent door lock is installed ...

Screening of schistosoma japonicum W chromosome specific gene and application of schistosoma japonicum W chromosome specific gene in cercaria sex identification

The invention discloses screening of a schistosoma japonicum W chromosome specific gene and application of the schistosoma japonicum W chromosome specific gene in cercaria sex identification, particularly relates to a duplex PCR (polymerase chain reaction) method adopting a specific primer containing the schistosoma japonicum W chromosome specific gene and a schistosoma japonicum reference gene PSMD4 primer, and belongs to the technical field of biology. The sex of the cercaria of the schistosoma japonicum katsurada is rapidly identified by using a schistosoma japonicum katsurada W chromosome specific gene primer and a PSMD4 housekeeping gene primer and adopting a dual PCR method, the whole process only needs 2 hours, and compared with a traditional animal experiment identification method, the identification time is greatly shortened, and the standardization and homogenization of a schistosoma japonicum katsurada disease animal model are improved; meanwhile, cercaria DNA does not need to ...

METHOD FOR CONTROLLING MULTIPLE PAN-TILT ZOOM HEADS, DEVICE, UNMANNED AERIAL VEHICLE, MEDIUM, AND ELECTRONIC APPARATUS

Embodiments of the present invention provide a method for controlling multiple pan-tilt zoom heads, a device for controlling multiple pan-tilt zoom heads, an unmanned aerial vehicle, a computer readable medium, and an electronic apparatus. The method for controlling multiple pan-tilt zoom heads comprises: acquiring multiple configuration parameters of each pan-tilt zoom head among multiple pan-tilt zoom heads; grouping multiple configuration parameters having a consistent configuration parameter identifier as a configuration information pair; and acquiring a target configuration parameter of the configuration information pair, and controlling the multiple pan-tilt zoom heads on the basis of the target configuration parameter. The technical solution of the embodiments of the present invention provides a method for controlling configuration parameters of multiple pan-tilt zoom heads in a centralized manner, so as to achieve the goal of controlling the multiple pan-tilt zoom heads according ...

VIRTUAL TELLER MACHINE SYSTEM

A virtual teller machine system, comprising an operation chamber (103) in which a display (101) and an operation platform (102) are arranged. In the system, a first polaroid (1011a) having a first polarization direction and a second polaroid (1011b) having a second polarization direction are alternately attached to a display screen (1011), a visual device (1021) to which the first polaroid (1011a) is attached is arranged on the operation platform (102), and two-channel video playing control units (1012, 1013, 1014, 1015) are combined, so that only users located inside the operation chamber (103) can see an operation interface through the visual device (1021), while users located outside the operation chamber (103) can see other images of a non-operation interface through transparent glass (1031), thereby improving the user operation security and user experience.

PAN-TILT CONTROL METHOD AND APPARATUS, PAN-TILT SYSTEM, UNMANNED AERIAL VEHICLE AND COMPUTER-READABLE STORAGE MEDIUM

Provided are a pan-tilt control method, a control apparatus (30), a pan-tilt system (100), an unmanned aerial vehicle (1000) and a non-volatile computer storage medium. The pan-tilt system (100) comprises at least one rotary shaft (10), wherein the rotary shaft (10) rotates within a limiting angle interval, with the limiting angle interval comprising a target limiting position (20). The pan-tilt control method comprises: acquiring a current rotation parameter of a rotary shaft (10); calculating, according to the current rotation parameter and the maximum acceleration of the rotary shaft (10), a predicted rotation parameter required when the rotary shaft (10) reaches a target limiting position (20) and the change of the current rotation parameter is zero, or calculating, according to the current rotation parameter, a predicted rotation parameter required when the rotary shaft (10) reaches the target limiting position (20) and the change of the current rotation parameter is zero; and controlling ...

Automatic welding equipment for washing machine shell

The invention relates to the technical field of intelligent equipment, in particular to washing machine shell automatic welding equipment which comprises an equipment frame, a U-shaped shell positioning mechanism and an automatic welding mechanism. The U-shaped shell positioning mechanism comprises a positioning workbench and a U-shaped shell positioning assembly, the automatic welding mechanism comprises a translation frame and a lifting frame, a vertical plate is arranged on the translation frame, a second driving assembly and a second sliding assembly are arranged on the vertical plate, the second driving assembly is used for driving the lifting frame to move up and down, and an electrode holder support, a third driving assembly and an air cylinder are arranged on one side of the lifting frame. Along with stretching and retracting of the piston rod of the air cylinder, the two electrode holder supports move towards each other or move away from each other, and electrode holders are arranged ...

Test method for verifying groove bottom crack resistance of tire

The invention discloses a test method for verifying the groove bottom crack resistance of a tire, and the test method provided by the invention comprises the following steps: equally dividing a precrack notch along the circumference of the tire, processing by a machine tool, comparing the change of the crack length before and after the processing by the machine tool, and judging and evaluating the groove bottom crack resistance of the tire. The test method provided by the invention can objectively and effectively verify an early groove bottom crack caused by release of internal stress of the tire by prefabricating a crack notch at the groove bottom of the tire pattern and performing indoor machine tool treatment, adopts an indoor test, is controllable in time and money cost, and can judge the cause of the tire structure defect, thereby improving the test efficiency. And product development and improvement are facilitated.

Ventilation method of common support tunneling courtyard for preventing blasting smoke poisoning

The invention belongs to the technical field of local ventilation of underground mines, and particularly relates to a ventilation method of a common support tunneling courtyard for preventing smoke poisoning, which comprises the following steps: S1, building a ladder stand in the courtyard along the length direction, and arranging a ladder frame in a hollow manner; s2, an operation platform is built in the courtyard; s3, the air duct is suspended above the operation platform through a suspension device for ventilation, and the operation platform and the air duct are dismantled before blasting; s4, after blasting is completed, blasting slag is conveyed out through slag discharging equipment, high-pressure gas is introduced into the height position of the last round of operation platform in the raise through the ladder frame, and the gas concentration is measured after set time is reached; s5, the crawling ladders continue to be built in the courtyard, and ladder assemblies of every two adjacent ...

Heavy alcohol treatment device and use method

The invention discloses a heavy alcohol treatment device and a use method, and belongs to the technical field of chemical production, the heavy alcohol treatment device comprises a wiped film evaporator, a primary separator, a secondary separator, a heavy alcohol delivery pump, a condenser, a vacuumizing system, a vacuumizing condensate tank and a vacuumizing condensate delivery pump. According to the method, part of light components such as ethylene glycol and diethylene glycol in the heavy alcohol are recycled, the content of salt in fed materials is high, and if the fed materials are not treated, the salt is easy to accumulate on a pipe wall to cause blockage of a pipeline, so that the problem that the pipeline is easy to block due to high salt content in the heavy alcohol is solved, and the production cost is reduced. Part of ethylene glycol and diethylene glycol in the heavy alcohol are recovered, so that the economic benefit is improved, and the loss of product materials of the device ...

Spike for outdoor electronic material identification card

The invention discloses a spike for an outdoor electronic material identification card, and relates to the technical field of traffic safety devices.The spike is characterized by comprising a base embedded in a road and a light-emitting base detachably installed at the top of the base, and the light-emitting base is in a truncated pyramid shape; one side edge of the light-emitting base is provided with a set of water flowing grooves communicating with the mounting groove, and the other side edges of the light-emitting base are fixedly provided with light-emitting assemblies through grooves. A mounting groove is formed in the light-emitting base, and a truncated pyramid is arranged at the center position in the mounting groove. Compared with existing spikes in the market, the label can be taken from the front side, the spike is 1.2 cm higher than the road ground after being installed, the height is limited, the trafficability influence on logistics equipment such as forklifts, manual hydraulic ...

CRADLE HEAD CONTROL METHOD, CRADLE HEAD, MOVABLE PLATFORM AND READABLE STORAGE MEDIUM

A cradle head (100) control method, a cradle head (100), a movable platform, and a readable storage medium (300). The control method comprises: obtaining a desired joint angular velocity of a cradle head (100) in a cradle head joint angular coordinate system (S10); according to the conversion relationship between the desired joint angular velocity, the cradle head joint angular coordinate system, and a cradle head body coordinate system, and the conversion relationship between the cradle head body coordinate system and a Euler coordinate system, converting the desired joint angular velocity into a desired Euler angular velocity (S20); according to the current state of the cradle head (100) and the desired Euler angular velocity, determining the desired state of the cradle head (100) (S30).

TOUCH SCREEN AND MANUFACTURING METHOD THEREFOR, AND DISPLAY DEVICE

A touch screen and a manufacturing method therefor, and a display device. The touch screen comprises first touch control electrodes and second touch control electrodes distributed crosswise along different directions and arranged on a substrate (100). The first touch control electrode and the second touch control electrode are insulated from each other at a cross position. Either the first touch control electrode or the second touch electrode comprises a metal bridging line (11) and a plurality of transparent conducting portions (10) arranged at intervals. The metal bridging line (11) is electrically connected, at the cross position, to adjacent transparent conducting portions (10) arranged at intervals. The touch screen further comprises an opaque pattern (12). The metal bridging line (11) corresponds to the position of the opaque pattern (12). The opaque pattern (12) may be located on one side, close to a display picture, of the metal bridging line (11). Thus, light rays, reflected to ...

Garbage transportation management method and system based on improved Hill order increment sequence

The invention relates to the technical field of Hill sorting, in particular to a garbage transportation management method and system based on an improved Hill sorting increment sequence, and the method comprises the steps: collecting garbage weight data of a garbage room; and sorting the garbage weight data of the garbage room by using a Hille sorting method, and transporting the garbage according to a sorting result. The problem of low efficiency of garbage transportation management is solved; and meanwhile, the Li sequence method is utilized to solve the problem of low efficiency of the existing Hille sorting method.

MMIC-based delay line circuit and debugging method thereof

The invention provides a delay line circuit based on MMIC and a debugging method thereof. The delay line circuit comprises a plurality of delay modules which are sequentially connected in series; each time delay module comprises a first single-pole double-throw switch, a reference branch, a time delay branch and a second single-pole double-throw switch; each time delay module also comprises a plurality of time delay adjusting units distributed along the time delay branch, and each time delay adjusting unit is provided with a first bonding pad; the delay branch is provided with a second bonding pad, and the second bonding pad is used for being connected with the first bonding pads of the corresponding number of delay adjusting units through gold wire bonding based on the difference between the actually measured delay amount and the design value when the delay line circuit is debugged. According to the invention, the multi-bit delay amount can be realized by switching the switch combination ...

Resin filter convenient for discharging

The invention relates to the technical field of resin filtration, and discloses a resin filter convenient to discharge, which solves the problem that impurities can be accumulated on filter screens to affect the filter efficiency, and comprises a filter box, the bottom of the filter box is fixedly connected with a base, the top of the filter box is provided with a feed pipe, and the filter box is internally provided with a first filter screen. The first filter screen is of a conical structure, the first filter screen is fixedly sleeved with a stacking ring, the bottom of the stacking ring is fixedly connected with a fixing sleeve, the fixing sleeve is connected with the inner wall of the filter box through a bearing, a first rotating shaft is arranged below the first filter screen and connected with the fixing sleeve through a first connecting shaft, and a discharging pipe is arranged at the bottom of the filter box. A second rotating shaft is arranged in the discharging pipe, and a spiral ...

Nuclear power tunnel marine organism cleaning equipment and system

The invention discloses nuclear power tunnel marine organism cleaning equipment and system. The nuclear power tunnel marine organism cleaning equipment comprises a movable main body device, and a cleaning and gathering device, a collecting device and a conveying device which are respectively mounted on the main body device, the cleaning and gathering device comprises rolling brushes located on the two sides of the front end of the body device. The rolling brush is used for rotating by being attached to the inner wall of the tunnel so as to clean marine organisms on the inner wall of the tunnel; the rolling brush is further used for gradually moving downwards along the inner wall of the tunnel during rotation so as to gather the cleaned and peeled marine organisms on the middle plane of the bottom of the tunnel; the collecting device is located at the rear end between the two rolling brushes and used for collecting the marine organisms gathered on the middle plane of the bottom of the tunnel ...

Depth self-adaptive submersible buoyancy block fixing mechanism

A depth self-adaptive submersible buoyancy block fixing mechanism comprises a carrier frame of a submersible, a plurality of buoyancy blocks are installed on the submersible buoyancy block fixing mechanism through a fixing mechanism, a pit is formed in the side portion of a single buoyancy block, and the single buoyancy block and the carrier frame are locked at the pit through the fixing mechanism; the fixing mechanism structurally comprises an embedded part fixed in the pit of the buoyancy block and further comprises a first connecting base and a second connecting base which are symmetrically arranged, the first connecting base is connected with the embedded part, a mounting through hole is formed in the mounting base face of the carrier frame, and the second connecting base penetrates through the mounting through hole and is locked through a nut; a sliding cylinder is installed on the second connecting base in a matched mode, a sliding rod is installed in the sliding cylinder in a matched ...

GIMBAL CONTROL METHOD, UNMANNED AERIAL VEHICLE, GIMBAL, AND STORAGE MEDIUM

Provided in an embodiment of the present invention are a gimbal control method, an unmanned aerial vehicle, a gimbal, and a storage medium. The gimbal control method is implemented in an unmanned aerial vehicle provided with a gimbal. The method comprises: detecting whether an unmanned aerial vehicle enters a preset state; and if the unmanned aerial vehicle is detected to have entered the preset state, transmitting a control instruction to a gimbal, wherein the control instruction is used to instruct the gimbal to move to, and remain at, a target joint angle from a current joint angle. The joint angle is an angle of a gimbal shaft relative to the gimbal in a joint coordinate system. In the embodiment of the present invention, controlling a gimbal to move from a current joint angle to a target joint angle effectively ensures that the gimbal does not reach a position-limiting position, thereby realizing protection and control of the gimbal, and ensuring safety of the gimbal.

MEDIUM ACCESS CONTROL METHOD, BASED ON BROADCAST PREAMBLE INTERCEPTION, FOR COGNITIVE SENSOR NETWORK

The present invention relates to wireless cognitive sensor network technology. Disclosed is a medium access control method, based on broadcast preamble interception, for a cognitive sensor network. A cognitive node in a cognitive sensor network uses a periodic sleep-wake-up mechanism. First, spectrum-sensing technology is used to determine a state of a primary user, and if the primary user is not active, a data-sending node establishes a communication link by means of broadcasting a preamble. According to a wake-up sequence, each neighbour node takes information about the number of hops for reaching a gateway into consideration at the same time, and autonomously decides to act as a relay node for data forwarding. In addition, since a transmission collision between the cognitive node and the primary user is possibly caused by the primary user returning or a missed alarm, the present invention uses a re-transmission mechanism based on confirmation so as to ensure the reliability of data packet ...

Curved glass heating and bending device

The invention discloses a curved glass heating and bending device which comprises a supporting structure, an adjusting assembly, a constant temperature assembly and a bending structure, the supporting structure comprises a base, a supporting assembly and a counterweight assembly, and the base is connected with the outer wall of the bottom of the supporting assembly; the supporting assembly is used for supporting the adjusting assembly; the counterweight assembly is connected with the outer wall of the top of the supporting assembly, the adjusting assembly is connected with the inner wall of the supporting assembly, and the constant-temperature assembly is connected with the inner wall of the supporting assembly and used for preserving heat of a bending structure. The bending structure comprises a bending assembly and a supporting table assembly, the bending assembly is connected with the outer wall of the top of the adjusting assembly, and the bending assembly is used for bending glass ...

SOUCHE D'ESCHERICHIA COLI JLTRP ET APPLICATION CORRESPONDANTE DANS LA SYNTHÈSE DE L-TRYPTOPHANE

An Escherichia coli JLTrp strain and application thereof in L-tryptophan synthesis. The strain has a culture collection number of CGMCC No.7.217 and is resistant against multiple antibiotics. The method using the strain for fermentation-production of L-tryptophan comprises the following steps: (1) growing a mature Escherichia coli JLTrp bacterial culture; and (2) fermentation tank culturing: inoculating the mature bacterial culture in a fermentation tank, and performing fermentation-production and extraction of L-tryptophan at a temperature of 34-36°C, stage-based pH control by adding liquid ammonia, a pressure of 0.03-0.08 MPa, an aeration rate of 0.3-2.0 VVM, and a residual sugar level maintained at 0.01-0.5% during the fermentation process. The L-tryptophan produced using the strain has an increased concentration of 70-80 g/L of L-tryptophan.

Drill column longitudinal vibration suppression device for suppressing vibration through vibration

The drill column longitudinal vibration suppression device comprises an active suppression device and a self-power-generation device which are arranged on a drill column from top to bottom, the active suppression device actively vibrates in the vibration direction opposite to the longitudinal vibration of the drill column, and the longitudinal vibration of the drill column is actively suppressed in a vibration suppression mode through vibration; the self-power-generating device generates current by using heat resources at the bottom of the well and transmits electric energy to the active suppression device. The self-generating device is arranged to supply power to the active suppression device, and the active suppression device is arranged to perform active vibration, so that longitudinal vibration of the drill string is actively suppressed, and the problem that an existing passive suppression device cannot actively suppress longitudinal vibration of the drill string can be solved; extra ...

Reconfigurable broadband matching circuit

The invention provides a reconfigurable broadband matching circuit. The reconfigurable broadband matching circuit comprises a first resonant cavity and a second resonant cavity which are magnetically coupled, and a digital control module used for configuring the first resonant cavity and the second resonant cavity, the first resonant cavity comprises a first adjustable array, a transformer main side coil and a pre-stage circuit output impedance which are connected in parallel, and a capacitance value and a resistance value output by the first adjustable array are adjustable; the second resonant cavity comprises a second adjustable array, a transformer secondary side coil and a post-stage circuit input impedance which are connected in parallel, and the capacitance value and the resistance value output by the second adjustable array are adjustable; the digital control module is connected with the first adjustable array and the second adjustable array and used for configuring capacitance values ...

Steel for thick-wall low-temperature deep sea pipeline and production method thereof

The invention discloses steel for a thick-wall low-temperature deep sea pipeline and a production method of the steel, and relates to the technical field of steel production, and the steel comprises the following chemical components in percentage by mass: 0.03%-0.07% of C, 0.10%-0.30% of Si, 1.30%-1.70% of Mn, less than or equal to 0.015% of P, less than or equal to 0.002% of S, 0.030%-0.060% of Nb, less than or equal to 0.03% of V, 0.008%-0.030% of Ti, 0.10%-0.30% of Cr, less than or equal to 0.30% of Ni, 0.08%-0.20% of Mo, less than or equal to 0.30% of Cu, less than or equal to 0.0005% of B, 0.0008%-0.0015% of Mg, 0.015%-0.030% of Wide and thick section smelting is adopted to obtain a casting blank with high and low purity and excellent microstructure, a high-temperature austenitizing process is matched with a large reduction rolling technology to obtain a polyphase structure type of polygonal ferrite, acicular ferrite and bainite, and the performance requirements of the steel for the ...

Unmanned aerial vehicle hangar with foldable hangar door

The invention relates to the field of unmanned aerial vehicle hangars, in particular to an unmanned aerial vehicle hangar with a foldable hangar door, which comprises a frame and at least one hangar door folding mechanism, the garage door folding mechanism comprises a garage door and at least one movable guide rail; wherein the movable guide rail has a rotational degree of freedom so as to be mutually converted between two states of being parallel to the fixed guide rail or forming an included angle with the fixed guide rail; the garage door is slidably connected to the fixed guide rail and the movable guide rail, and the garage door is slidably connected with the movable guide rail in a clamped mode. When the garage door is slidably connected to the movable guide rail and the movable guide rail rotates to form an included angle with the fixed guide rail, the garage door can rotate along with the movable guide rail to form an included angle with the fixed guide rail. By means of the garage ...

ROTATION CONTROL METHOD AND APPARATUS FOR GIMBAL, CONTROL DEVICE, AND MOBILE PLATFORM

A rotation control method and apparatus for a gimbal, a control device, and a mobile platform are provided in the embodiments of the present invention, the gimbal comprising a frame portion that is used for carrying a load device, and the gimbal being connected to the mobile platform by means of a base. The method comprises: entering a pseudo following mode after a trigger signal is received, and in the pseudo following mode, acquiring an attitude angle of the gimbal, and acquiring an attitude angle of the base; and performing rotation control on the gimbal according to the attitude angle of the base and the attitude angle of the gimbal, such that the gimbal can rotate with the base. According to the embodiments of the present invention, the control of the gimbal in various environments can be better ensured, such that when a sensor of the mobile platform is subjected to environmental interference, especially when a compass of the mobile platform is subjected to strong electromagnetic environmental ...

C/S ARCHITECTURE-BASED DENTAL BEAUTIFICATION AR SMART ASSISTANCE METHOD AND APPARATUS

Provided are a C/S architecture-based dental beautification AR smart assistance method and apparatus, in particular: a dental beautification assistance method, comprising: obtaining required information; processing the information and obtaining an information processing result; according to the information processing result, generating and displaying a beautification solution. Also provided is a dental beautification assistance apparatus, comprising an obtaining module (111), an establishing module (112), an analyzing module (113), a simulating module (114), and a selecting module (115). Also provided is a terminal device used for dental beautification, comprising a storage device (110) used for storing a computer program code, and a processor (120) used for executing the computer program code stored in the storage device (110). The C/S architecture-based dental beautification AR smart assistance method and apparatus are capable of providing, in advance, a post-beautification dental reference ...

Cooling system

The invention provides a cooling system. The cooling system comprises a heat circulation loop, a heat exchange loop and a heat exchange assembly. The heat exchange loop is connected with the heat circulation loop through an evaporator. Due to the fact that the heat exchange assembly is additionally arranged on the basis of the prior art, when the external environment temperature is required to be stable, heat exchange is conducted through the heat exchange assembly and hot air blown out of the condensation fan, and therefore the technical purpose of controlling the external temperature is achieved. At the moment, hot air blown out by the condensation fan does not directly exchange heat with air, the temperature of the external environment cannot rise, and therefore the technical problem that in the prior art, a machine tool is affected due to heat dissipation of the condensation fan, and the machining precision deviates is solved.

Front end device for gathering and collecting marine organisms in tunnel

The invention discloses a tunnel marine organism gathering and collecting front-end device which is connected to the front end of host equipment and comprises a main frame, a conveying unit, a side wing collecting unit and an upper supporting arm unit which are arranged on the bottom face of a tunnel. The conveying unit is connected to the main machine equipment in a floating mode and extends forwards to the front portion of the main frame, and marine organisms located on the bottom face of the tunnel are collected and conveyed to the main machine equipment. The side wing collecting units are arranged on the two sides of the front end of the conveying unit and connected to the main frame, and marine organisms on the side wall of the tunnel are collected and gathered to the conveying unit. The upper supporting arm unit comprises upper supporting arm assemblies which extend to the two side wall faces of the tunnel from the main frame and are symmetrical to the perpendicular plane of the axis ...

Nuclear power tunnel marine organism cleaning equipment and system

The invention discloses nuclear power tunnel marine organism cleaning equipment and system. The nuclear power tunnel marine organism cleaning equipment comprises a main body device capable of moving forwards in a wriggling mode, and a cleaning and gathering device, a collecting device and a conveying device which are arranged on the main body device. The cleaning and gathering device comprises two cleaning scraping plates which are positioned at the front end of the main body device, are wing-shaped and can axially rotate around the tunnel; the side portion of the cleaning scraper is used for being attached to the inner wall of the tunnel, and the cleaning scraper is used for being folded downwards along the inner wall of the tunnel every time the main body device moves forwards by a certain distance in a wriggling mode so as to clean marine organisms on the inner wall of the tunnel and gather the marine organisms peeled off after cleaning to the middle plane of the bottom of the tunnel ...

Bilateral pressing type power bank

The invention discloses a double-side pressing type power bank, belongs to the industry of electronic and electrical products, and mainly aims to solve the problems that electronic equipment is out of power or the power bank is out of power when people go out. The double-side pressing type power bank provided by the invention comprises a key rack device, a ratchet wheel device and a current processing device, wherein the key rack device comprises a direct-acting key, a thrust spring, a key locking bayonet lock and a rack; wherein the ratchet wheel device comprises a first gear, an inner ratchet wheel, an outer ratchet wheel and a locking claw; wherein the current processing device comprises an alternating-current generator, a rectifier, a booster, a current stabilizer, a controller and a lithium battery. The reciprocating type press key has the benefits that the operation is simple, the structure is reliable, and the use is convenient; the ratchet wheel counter weight enables the ratchet ...

TUNNEL WALL-ADHERING SHUTTLE PLATFORM AND TUNNEL MONITORING APPARATUS

A tunnel wall-adhering shuttle platform (30) and a tunnel monitoring apparatus (100), the tunnel wall-adhering shuttle platform (30) being suited to shuttling in water in a tunnel (20) below a shield well (10), the tunnel wall-adhering shuttle platform (30) comprising a control apparatus (303), a winch (304), a cable (302), and a carrying platform (301) capable of floating on water, the control apparatus (303) being electrically connected to the winch (304), the carrying platform (301) being electrically connected to the control apparatus (303) by means of the cable (302), one end of the cable (302) being connected to the carrying platform (301) and the other end of the cable (302) being wound onto the winch (304), and the control apparatus (303) controlling the release and retraction of the cable (302) such that the carrying platform (301) can shuttle in a reciprocating motion along the inner wall of the tunnel (20) in a wall-adhering manner. By means of the control apparatus (303) controlling ...

CONTROL METHOD FOR GIMBAL CAPABLE OF REPLACING LENSES, AND GIMBAL

Provided are a control method for a gimbal capable of replacing lenses, and a gimbal. The method comprises: after a gimbal receives a lens replacement instruction, entering a lens replacement mode; a control assembly generating a first work instruction and sending the first work instruction to an electric motor assembly; and the electric motor assembly executing the first work instruction and making a corresponding action. The embodiments of the present disclosure can rapidly replace lenses, without powering off, and ensure that a gimbal can run normally during lens replacement, and same are simple to operate, save on users' time, reduce labor costs, and meet the requirements of the users for automation and intelligentization.

HANDHELD GIMBAL CONTROL METHOD AND HANDHELD GIMBAL

A handheld gimbal control method and a handheld gimbal. The handheld gimbal comprises a handle and a gimbal provided on the handle. The method comprises: when a gimbal enters a movement state, obtaining an attitude of a handle; determining, according to the attitude of the handle, a first included angle between a first axis direction in a coordinate system of the handle and a vertical direction and/or a second included angle between a second axis direction in the coordinate system of the handle and the vertical direction; determining a desired photographing mode of the gimbal according to the first included angle and/or the second included angle, the desired photographing mode comprising one of an upper flashlight mode and a vertical mode; and controlling the gimbal to enter the desired photographing mode, wherein when the handheld gimbal is placed upright, the first axis direction and the second axis direction are orthogonal to the vertical direction. The handheld gimbal control method ...

YAW ATTITUDE CONTROL METHOD, UNMANNED AERIAL VEHICLE, AND COMPUTER READABLE STORAGE MEDIUM

Embodiments of the present invention provide a yaw attitude control method, an unmanned aerial vehicle, and a computer readable storage medium. The method comprises: when switching from a first control mode to a second control mode, determining an expected yaw attitude difference caused by a first control lever quantity received from a control terminal in the first control mode, wherein the expected yaw attitude difference is a yaw attitude difference between a fuselage of the unmanned aerial vehicle and a pan-tilt carried on the fuselage, and the first control lever quantity is used for decoupling control of a yaw attitude of the pan-tilt or a yaw attitude of the fuselage; and controlling the yaw attitude of the pan-tilt according to the expected yaw attitude difference, so that the pan-tilt follows the fuselage in the yaw direction. By means of the embodiments of the present invention, a photographed image of a photographing device carried on the pan-tilt can be kept stable, and the stability ...

ENERGY CONTROL METHOD AND DEVICE, ENERGY MANAGEMENT SYSTEM, AND STORAGE MEDIUM

An energy control method and device, an energy management system and a storage medium, which relate to the technical field of energy control, the method comprising: determining whether a power generating system can be connected to a public power grid on the basis of a preset grid-connection determination rule (101); if so, controlling the power generating system to connect to the public power grid and transmit power to the public power grid on the basis of a preset constant power grid connection mode, so as to transmit electric energy at constant power to the public power grid (102); and if not, controlling the power generating system so that the system does not connect to the public grid and supplies power to a load on the basis of a preset non-grid-connected power supply strategy (103). Using the present disclosure may implement the efficient utilization of energy when there is no connection to a grid, may efficiently dispatch energy when there is a connection to the grid combined with ...

Connector, liquid cooling cable assembly and quick charging equipment of power battery

The invention discloses a connector, a liquid cooling cable assembly and a quick charging device of a power battery, the connector comprises at least two connecting pieces, each connecting piece comprises a first part and a second part which are oppositely arranged, the inner diameter of the second part is smaller than that of the first part, and the first part is connected with the second part; a first channel penetrating through the first part and the second part is formed in the connecting piece; a second channel is formed in the communicating piece, and the two first channels are communicated through the second channel; the first fixing part is configured to be matched with the first part to fix the liquid cooling cable and enable the first channel to be communicated with a cooling channel in the liquid cooling cable; and the second fixing piece is configured to be matched with the second part to fix the liquid cooling cable and seal the first channel. Through the mode, the structure ...

Urban rail transit overhead line system dynamic quality evaluation system and determination method

The invention discloses a dynamic quality evaluation system and determination method for an urban rail transit overhead line system, and aims to give consideration to the preference of a decision maker for attributes and strive to reduce the subjective randomness of empowerment, so that the empowerment of the attributes is subjectively and objectively unified, and the decision result is more real and reliable. According to the technical indexes, a subjective and objective comprehensive weighting method is adopted, the method embodies the idea of system analysis, and the wishes of decision makers are considered while the weighting result has a mathematical theory basis, so that the evaluation result of the technical indexes more scientifically and accurately expresses the equipment state. Compared with the prior art, the method has the advantages that a plurality of related parameters are introduced, the dynamic performance of the pantograph catenary is systematically and fairly evaluated ...

FLEXIBLE SUPPORT FRAME INTEGRATED FLEXIBLE TIRE

A flexible support frame integrated flexible tire, comprising a tread complex (1), an intermediate flexible support frame ring (2), and a built-in rim (3). The built-in rim (3) is provided at the middle position thereof with an axle hole fitting an axle so as to facilitate the mounting of same at a later stage. The intermediate flexible support frame ring (2) is made of an ultrahigh-strength polyurethane elastic polymer material. The built-in rim (3) is directly mounted on the axle. The intermediate flexible support frame ring (2) is fittingly mounted on the built-in rim (3) via a keyed groove. The tread complex (1) is vulcanized and attached to the intermediate flexible support frame ring (2). The intermediate flexible support frame ring (2) consists of an outer support ring (21), an inner support ring (22), and an intermediate arced frame (24) connecting the outer support ring (21) and the inner support ring (22). The flexible tire can replace a conventional inflatable tire and can be ...

SOLAR TRACKING METHOD AND SYSTEM FOR USE IN DISH-TYPE SOLAR THERMAL ELECTRICITY GENERATION SYSTEM

A solar tracking method for use in a dish-type solar thermal electricity generation system. The solar thermal electricity generation system is provided with a light-concentrating dish (20) and a heat collector (10). The solar tracking method comprises the following steps: 1) acquiring temperature distribution information of the heat collector (10); 2) determining, on the basis of the temperature distribution information, whether or not solar incident light rays are completely focused after being concentrated via the light-concentrating dish (20), if yes, executing step 10), if not, executing step 3); 3) acquiring the current angle of the light-concentrating dish (20), and a target angle of the light-concentrating dish (20) required for complete focus, and adjusting the current angle of the light-concentrating dish (20) to the target angle; and, 10) keeping the current angle of the light-concentrating dish unchanged. This method implements precision tracking of the sun, and increases the ...

METHOD FOR ATTITUDE SOLUTION OF HANDHELD CAMERA STABILIZER AND CAMERA STABILIZER SYSTEM

A method (300) for an attitude solution of a handheld camera stabilizer and a camera stabilizer system (500). The method comprises: acquiring first attitude information as measured by an inertial measurement unit of a camera stabilizer (510); acquiring second attitude information from measurement data of a visual odometer (112) in a mount component (520) of the camera stabilizer, wherein, the mount component (520) is used for mounting of the camera stabilizer (510); executing a correction on the first attitude information according to the second attitude information to obtain an attitude of the camera stabilizer (510). The technical solution improves the precision of a camera stabilizer attitude solution.

RETINAL PIGMENT EPITHELIAL CELL MEMBRANE AND PREPARATION METHOD THEREOF

The present disclosure relates to a method of separating retinal pigment epithelial cells. The present disclosure also relates to a method of separating retinal pigment epithelial cells by the separation method, and using the separated cells to prepare a cell membrane. The present disclosure also relates to the retinal pigment epithelial cell membrane obtained by the method of the present disclosure and an use thereof in the treatment of related diseases.

METHOD FOR CONTROLLING VIDEO SOURCE AND VIDEO CONFERENCE TERMINAL

A method for controlling a video source and a video conference terminal, comprising: directly obtaining or using a motion-sensing controller to obtain a body signal; and controlling a video source based on the obtained body signal. Embodiments of the present invention can switch video sources without help of a remote control, improving user experience.

Inverter and control method thereof

The invention provides an inverter and a control method thereof, the inverter is suitable for a power supply system, and the inverter comprises an inverter circuit, an acquisition circuit, a balance circuit and an inductor; the acquisition circuit is used for detecting DC bus voltage to obtain terminal voltage values of the first capacitor and the second capacitor; and the balancing circuit is used for controlling the switching-on or switching-off of the plurality of switching tubes when the terminal voltage value of the target capacitor is smaller than or equal to a first voltage threshold value, so as to adjust the current for charging the target capacitor through the inductor and reduce the terminal voltage difference value of the target capacitor and the non-target capacitor in the two groups of capacitors. By adopting the inverter, when the terminal voltage difference value of the two groups of capacitors in the inverter circuit is large, the output current of the inductor is adjusted ...

Method for self-repairing pile foundation through magnetic mixed mortar

The invention provides a method for self-repairing a pile foundation by using magnetic mixed mortar, and provides a device capable of realizing a self-repairing concept by specially repairing cracks of the pile foundation by using the magnetic mixed mortar. The device greatly utilizes related concepts such as a regenerative magnetic field and magnetic conduction, and a permanent magnet net is placed around the device to generate a magnetic field; and a direct-current conduction type electromagnetic pump is arranged, so that the magnetic mixed mortar flows into an induction area of the pile foundation, and a closed magnetic field is formed. The magnetic mixed mortar has certain magnetism and can automatically flow into cracks, corroded by seawater, of the pile foundation to be repaired under the action of a strong magnetic field of the direct-current conduction type electromagnetic pump. Therefore, real self-repairing of the pile foundation is achieved, and low-cost and high-efficiency engineering ...

High-precision delay clock generation circuit and chip

The invention discloses a high-precision delay clock generation circuit and a chip. The delay clock generation circuit comprises a clock delay chain unit, a delay clock output unit, an original clock output unit and a gating control unit. Wherein the external given clock signal port is connected with the input ends of the clock delay chain unit and the original clock output unit; a plurality of output ends of the clock delay chain unit are correspondingly connected with a plurality of input ends of the delay clock output unit respectively, and an output end of the delay clock output unit is connected with a first output end of the delay clock generation circuit; the output end of the original clock output unit is connected with the second output end of the delay clock generation circuit; the external system control signal port is connected with the input end of the gating control unit, and the output end of the gating control unit is connected with the control ends of the delay clock output ...

Inter-process communication monitoring method and device, electronic equipment and storage medium

The invention relates to the technical field of communication, and discloses an inter-process communication monitoring method and device, electronic equipment and a storage medium. The method comprises the steps that in response to an asynchronous Binder calling request of a target application process, asynchronous Binder calling of the target application process is monitored based on a preset asynchronous calling alarm mechanism, and the asynchronous Binder calling request comprises a preset service application identifier; after it is monitored that the target application process triggers a preset alarm, asynchronous Binder calling of the target application process is continuously monitored based on the service application identifier; and if the asynchronous Binder calling of the target application process meets the preset condition, judging that the target application process maliciously applies for the Binder service. According to the method and the device, the abnormal application in ...

TRIPOD HEAD CALIBRATION METHOD AND TRIPOD HEAD DEVICE

A tripod head calibration method and a tripod head device, the method being applied to the tripod head device, the tripod head device at least comprising a pitch shaft (12) and a roll shaft (11), the tripod head device being used for hanging a load (14). The method comprises: when the tripod head device powers up and enters a calibration mode, controlling the roll shaft (11) of the tripod head device to rotate to a preset position, and then controlling the pitch shaft (12) of the tripod head device to perform calibration, wherein the preset position prevents the load (14) from hitting other objects during the calibration of the pitch shaft (12). The described structure and method effectively prevent the load (14) of the tripod head device from hitting other objects during the calibration of the pitch shaft (12), and thereby improve the safety of the tripod head device and the hanging load (14).

Treatment method for collapse of steel sheet pile supporting structure

The invention discloses a treatment method for collapse of a steel sheet pile supporting structure, which comprises the following steps of: 1, carrying out foundation pit excavation on an area with serious collapse, judging whether the bottom of a first steel sheet pile is skirted and whether a second supporting structure is deformed, and if the skirting and the deformation are confirmed, judging whether the second supporting structure is deformed; the earthwork is backfilled to the position of the second supporting structure, and the damaged second supporting structure is reinforced; thirdly, a groove is excavated in the bottom of the foundation pit; fourthly, concrete is poured into the groove, a pipe pile is arranged, and the damaged second supporting structure is replaced; fifthly, the next section of groove is constructed, and the second step to the fourth step are repeated; sixthly, whether the protruding height of the concrete surface in the groove is abnormal or not is observed, ...

Machine vision lens for chip detection

The invention discloses a machine vision lens for chip detection, which belongs to the technical field of optical lenses and comprises a first lens assembly and a second lens assembly coaxially arranged with the first lens assembly. The second lens assembly comprises a second shell, a first lens and a second lens which are arranged in the second shell, and a supporting moving seat which is fixedly arranged on the outer side of the second shell; the supporting moving seat and the fixed cylinder are spaced in the radial direction; a first ring core and a second ring core are arranged on the outer side of the supporting movable base in a spaced mode, the first ring core and the second ring core are sleeved with a first coil and a second coil respectively, an installation ring is arranged on the inner wall of the fixing cylinder, a first long shaft core is fixed to the installation ring, and the first long shaft core extends in the axial direction of the fixing cylinder. The first long shaft ...

Multifunctional additive for dairy cows in perinatal period and preparation method of multifunctional additive

The invention relates to the technical field of feed, in particular to a multifunctional additive for dairy cows in the perinatal period and a preparation method thereof. The preparation method comprises the following steps: mixing water-soluble vitamins B1, B2, B3, B4, B5, B6, B7, B9 and B12 with silicon dioxide to form a core, mixing a meltable lipid material with a pH sensitive material to form a coating material, coating the core with the coating material, and preparing a coating on the surface of the coating material to prepare a water-soluble vitamin coated microcapsule; the preparation method comprises the following steps: mixing fat-soluble vitamins E and K, a meltable lipid material and a pH sensitive material to prepare fat-soluble vitamin coated microcapsules; and mixing the water-soluble vitamin coated micro-capsules, the fat-soluble vitamin coated micro-capsules, organic selenium, active dry yeast and a mold removal agent. The prepared multifunctional additive is reasonable ...

GIMBAL AND CONTROL METHOD THEREFOR, AND MOVABLE PLATFORM

A gimbal and a control method therefor, and a movable platform. The method comprises: acquiring an operation parameter of a gimbal, the operation parameter of the gimbal comprising a desired attitude of the gimbal (S201); if it is detected that the operation parameter matches a preset condition for manually manipulating the gimbal, determining the attitude switching speed of the gimbal according to the desired attitude and the real-time attitude of the gimbal when being manually manipulated (S202); and according to the direction of manually manipulating the gimbal and the attitude switching speed, controlling the desired attitude to be a real-time attitude (S203). When a gimbal is manually manipulated, the present method can control, according to the direction in which the gimbal is manually manipulated and an attitude switching speed determined according to a desired attitude and a real-time attitude of the gimbal when being manually manipulated, the desired attitude to tend to the real-time ...

Drawing device for interior design

A drawing device for interior design comprises a flat plate, a vertical wall, a turning plate, an angle adjusting assembly and a height adjusting assembly. The angle adjusting assembly comprises a lead screw, a moving block, a connecting rod, a sliding sleeve, a sliding rod, a sliding block, a rotating disc, a rotating rod, a shaft and a first handle. The height adjusting assembly comprises a supporting column, an adjusting column, a stop block, a supporting block and a second handle. According to the utility model, the angle adjusting assembly is arranged, so that the angle of the turning plate can be adjusted according to habits of different users; the height adjusting assembly is arranged, the height of the device can be adjusted, the device is suitable for different conditions, and various requirements are met; a magnet block is arranged and is matched with the overturning plate, so that the drawing is conveniently clamped; the angle adjusting assembly and the height adjusting assembly ...

GaN radio frequency front-end circuit, TR assembly and preparation method of GaN radio frequency front-end circuit

The invention provides a GaN radio frequency front-end circuit, a TR assembly and a preparation method thereof. The circuit comprises a transceiving port, a transmitting branch and a receiving branch. The source electrode of the first GaN power switch tube is connected between the output end of the emission branch and the output end of the GaN power amplifier, and the drain electrode of the first GaN power switch tube is grounded. And a series inductor is arranged at the output end of the GaN power amplifier. The series inductor and the equivalent capacitor of the first GaN power switch tube are used for realizing impedance matching of the output end of the GaN power amplifier, and the equivalent capacitor is the equivalent capacitor of the first GaN power switch tube in a cut-off state. According to the GaN power amplifier, the series inductor and the equivalent capacitor of the GaN power switch tube can form an LC impedance matching circuit, and impedance matching of the output end of ...

Method for measuring width of laying gap of carbon fiber composite material based on 3D vision

The invention discloses a method for measuring the width of a laying gap of a carbon fiber composite material based on 3D vision. The method comprises the following steps: step 1, collecting a point cloud of a joint area; step 2, point cloud segmentation: dividing the point cloud into a target area and a gap area; 3, extracting gap edge points, and obtaining the gap edge points of the target point cloud; step 4, carrying out quartic B spline curve fitting on the gap edge points; step 5, calculating a gap edge point fitting curve distance to obtain a minimum value and a maximum value of the gap width; and 6, judging whether the maximum value of the gap width is greater than 1mm or not. According to the invention, the execution mechanism device is used for carrying the 3D industrial camera, the gap between the carbon fiber material sheets can be automatically positioned, the gap width is measured, and the problems of high false detection rate, low gap width measurement precision, poor reliability ...

Steel belt, battery module and electric equipment

The invention belongs to the field of power batteries, and particularly relates to a steel belt, a battery module and electric equipment.The steel belt comprises a steel belt body, and the steel belt body is of a variable cross-section structure; and the width of the variable cross-section structure is smaller than that of the steel belt main body. By adopting the special steel belt design and controlling the variable cross-section structure, the pressure release of the steel belt in the use of the battery module is realized, so that the effect of controlling the expansion force of the battery in the battery module is achieved.

Image rendering method and related device

The embodiment of the invention discloses an image rendering method and a related device. The method comprises the following steps: acquiring first position information of a first element in a to-be-displayed scene image; performing first spatial transformation processing based on the first position information to obtain second position information of the first element in a world space corresponding to the scene image; determining first representation information of the second element in the world space according to the second position information; the second element is an element generated by the first element; performing second spatial transformation processing based on the first representation information to obtain second representation information of the second element in a screen space for displaying the scene image; and adjusting rendering information corresponding to the scene image according to the second representation information, and rendering and displaying the scene image based ...

Polishing device with clamping function for casting part machining

The invention relates to the technical field of casting part machining, and discloses a casting part machining grinding device with a clamping function, which comprises a machining base, a clamping mechanism is fixedly connected to the right end of the top of the machining base, a fixing mechanism is fixedly connected to the left end of the machining base, and a grinding mechanism is fixedly connected to one end of the back surface of the top of the machining base; the fixing mechanism comprises a first motor, the first motor is fixedly connected to the left end of the machining base, the right end of the first motor is fixedly connected with a threaded rod, the back face of the threaded rod is in threaded connection with a threaded block, the top end of the threaded block is fixedly connected with a movable plate, the two ends of the bottom of the movable plate are fixedly connected with sliding strips correspondingly, and a clamping cylinder is arranged at the right end of the movable ...

Self-adaptive radio frequency interference system and method for frequency hopping communication of unmanned aerial vehicle

The invention provides a self-adaptive radio frequency interference system and method for unmanned aerial vehicle frequency hopping communication. The method comprises the steps that a radio frequency signal detection unit converts received radio frequency signals of an uplink communication link and a downlink communication link of an unmanned aerial vehicle into digital signals and sends the digital signals to a digital signal processing unit; the digital signal processing unit is used for processing and analyzing the received digital signal to obtain a signal characteristic parameter and sending the signal characteristic parameter to the upper computer; the radar detects the position and distance information of the unmanned aerial vehicle and sends the information to the upper computer; the upper computer carries out matching calculation to obtain an optimal narrowband noise interference factor and an optimal signal-to-interference ratio, and sends the optimal narrowband noise interference ...

Hydraulic control and regulation all-in-one machine

The hydraulic control and regulation all-in-one machine is characterized in that a leakage detection assembly is mounted on a top plate of a pump station, drainage grooves are uniformly formed in the top surface of a separation groove, a heat conduction strip is embedded in a collection frame, an embedding hole is formed in the middle of the top surface of the heat conduction strip, an oil absorption rubber block is embedded in the top end of the embedding hole, and a check ring is embedded in the top end of the collection frame; the pump station top plate is divided into a plurality of areas by partition grooves, when oil drops, the oil enters the top face of an oil groove in the collecting frame along a drainage groove, the oil flows into the oil tank through the drainage groove, the oil flows into the oil tank through the drainage groove, the oil flows into the oil tank through the drainage groove, and the oil flows into the oil tank through the drainage groove. And the oil absorption ...

Processing and clamping device and process method for carbon fiber winding pipe

According to the machining clamping device for the carbon fiber winding pipe, the carbon fiber winding pipe is fixed through the chuck, and winding machining of the carbon fiber winding outer pipe is achieved through the rotating end plate and the winding shaft. The processing technology method of the carbon fiber winding pipe mainly comprises the following steps: guiding a carbon fiber tow into a tension adjusting device to adjust the tension; the carbon fiber tows are guided into a tension adjusting device, and tension is adjusted; fixing the core mold on a winding machine for winding to obtain a carbon fiber winding inner pipe, heating and curing, and finishing the processing of the carbon fiber winding outer pipe according to the process. According to the method, winding angle setting and tension adjustment of the carbon fiber tows are introduced, the attaching degree of the carbon fiber tows and the surface of the core mold is guaranteed, the problems of looseness and deformation occurring ...

Method for recovering rhodium from rhodium-containing aqueous solution

The invention relates to a method for recovering rhodium in a rhodium-containing aqueous solution, rhodium in a rhodium-containing acidic solution is precipitated by using a sulfydryl-containing cyclic compound, under the normal pressure condition, heating reflux, stirring and reaction are performed for 0.5-1 hour, the rhodium residual rate of mother liquor is low, and the content of other metal impurities in rhodium precipitate is also obviously reduced. The method not only solves the problem that rhodium is difficult to recover, but also increases production benefits.

SOLAR TRACKING METHOD AND TRACKING SYSTEM FOR DISH SOLAR THERMAL POWER GENERATION SYSTEM

A solar tracking method for a dish solar thermal power generation system comprises the following steps: 1) collecting solar image information, and analyzing and processing the solar image information by using software, to obtain a position of the sun; 2) detecting a position of a dish solar concentrator, and obtaining a deviation between the dish solar concentrator and sunlight according to the position of the sun and the position of the dish solar concentrator; 3) controlling the position of the dish solar concentrator of the dish solar thermal power generation system according to the deviation, so that the sunlight is completely focused after being reflected by the dish solar concentrator. The solar tracking method obtains the solar image information, obtains the position of the sun and the position of the dish solar concentrator, calculates the deviation, and controls an action of the dish solar concentrator, thereby implementing offset correction for errors, and eliminating errors accumulated ...

CLEANING AND COLLECTING SYSTEM FOR TUNNEL AND CONTROL METHOD THEREFOR

A cleaning and collecting system for a tunnel, comprising a cleaning robot (200), a collecting robot (100) and a remote operating apparatus (300). The cleaning robot (200) comprises a moving carrier (5), a mechanical arm assembly, an end cleaning apparatus (7) and a local control system, wherein the local control system comprises a local controller (81), a first sensing system (82) and a first camera system (83), the local controller (81) controlling the moving carrier (5), the mechanical arm assembly and the end cleaning apparatus (7) according to information from the first sensing system (82). The collecting robot (100) comprises a moving vehicle body (1), a stripping and conveying apparatus (2), a collecting box (3) and a local control system, wherein the local control system comprises a local controller (41), a second sensing system (42) and a second camera system (43), the local controller (41) controlling the moving vehicle body (1) and the stripping and conveying apparatus (2) according ...

CONTROL METHOD AND CONTROL APPARATUS FOR GIMBAL, GIMBAL, AND MOBILE CAR

A control method for a gimbal, comprising: obtaining a measurement attitude of the gimbal, the measurement attitude comprising a measurement component of a preset shaft, and the preset shaft being a shaft for which attitude control is not required in the gimbal; controlling the difference between the measurement component of the preset shaft and an expected component of the preset shaft in an expected attitude of the gimbal to be within a preset difference range. By means of the control method, the influence of the output of the preset shaft on the attitude control of the gimbal is reduced, and the occurrence of control saturation is avoided. Also comprised are a control apparatus for the gimbal, the gimbal comprising the control apparatus, and a mobile car comprising the gimbal.

URBAN RAIL TRANSIT TIRE BEAD STRUCTURE

Disclosed in the present invention is an urban rail transit tire bead structure, comprising a composite bead filler core, a steel wire ring, a carcass ply, a wire cord fabric reinforcing layer, seam allowance nylon wrapping cloth, and seam allowance protective rubber. The carcass ply wraps the steel wire ring, the carcass ply is bound by the wire cord fabric reinforcing layer in a U-shaped design, the inner endpoint of the wire cord fabric reinforcing layer is provided between the carcass ply and a lining layer, and the outer endpoint of the wire cord fabric reinforcing layer is provided between the carcass ply and the seam allowance nylon wrapping cloth. The upper endpoint of the seam allowance nylon wrapping cloth is located above a reverse wrapping endpoint of the carcass ply, and the lower endpoint thereof is ended at the steel wire ring. The filling material of the tire bead is moderate in thickness. The quality control cost of component production, storage process and green tire manufacturing ...

TREAD GROOVE TIRE HAVING ENHANCED STONE REMOVAL EFFECT

A tread groove tire having an enhanced stone removal effect, comprising a tire body (100), and grooves (102) that are provided on the surface of the tire body (100) and used for increasing friction. The surface of the tire body (100) on both sides of the grooves (102) is provided with tread patterns (101) for increasing friction; and stone-removing blocks (103) are provided inside the grooves (102). The angles of the grooves (102): the included angle between two side walls of each groove (102) is equal to α+β; the angles α and β are included angles between sidewalls of a tread groove and the radial direction of a tire, 0°<α, and β<45°.