智能工具箱

INDUSTRIAL FIELD REAL-TIME WORKING CONDITION RADIO ALARM SYSTEM

An industrial field real-time working condition radio alarm system, comprises a transmitting end (11) and a receiving end (12) carried by a worker; the transmitting end (11) comprises a detector (101) to detect the current working condition, a transmitting end processor (102) to process an on-off signal sent by the detector (101), and a radio transmitter (103) to transmit an alarm signal to the receiving end (12) under the control of the transmitting end processor (102); the receiving end (12) comprises a radio receiver (105) to receive the alarm signal, a receiving end processor (106) to process the alarm signal sent by the radio receiver (105), and an alarm (107) to send an alarm under the control of the receiving end processor (106); the transmitting end processor (102) is connected to the detector (101) and the radio transmitter (103) respectively; and the receiving end processor (106) is connected to the radio receiver (105) and the alarm (107) respectively. The radio alarm system ...

POSITIONING METHOD AND APPARATUS

A positioning method and apparatus, which relate to the field of terminals, are applied to a positioning process of a terminal, and can reduce the power consumption of the terminal during the positioning process. The positioning method involves: a first device determining a first distance between the first device and a second device; when the first distance is greater than or equal to a first threshold, the first device sending first instruction information to the second device, the first instruction information being used to instruct the second device to use a first positioning mode; and when the first distance is less than a second threshold, the first device sending second instruction information to the second device, the second instruction information being used to instruct the second device to use a second positioning mode, wherein the second threshold is less than or equal to the first threshold, and the positioning accuracy of the first positioning mode is less than the positioning ...

NETWORK SWITCHING METHOD, APPARATUS, AND NETWORK SYSTEM

A network switching method, an apparatus, and a network system, pertaining to the technical field of the Internet of things. The network system comprises a server and an IoT apparatus supporting at least two network standards, wherein the IoT apparatus is used to access a network of a first network standard, acquire specific information, and report the specific information to the server. The specific information comprises geographic location information of the IoT apparatus, and network information scanned by the IoT apparatus at the current geographic location. The server is used to determine a second network standard upon receiving the specific information reported by the IoT apparatus, and send a network switching instruction to the IoT apparatus, the network switching instruction comprising an identifier of the second network standard. The IoT apparatus is further used to switch, upon receiving the network switching instruction sent by the server, from the network of the first network ...

Layered sodium ion battery positive electrode material, preparation method thereof and sodium ion battery

The invention relates to a layered sodium-ion battery positive electrode material, a preparation method thereof and a sodium-ion battery, belongs to the technical field of sodium-ion batteries, and aims to solve the problem that the capacity and other performances of the sodium-ion battery are influenced due to high residual alkali content of a positive electrode material with high sodium preparation amount in the prior art. According to the present invention, the elements in the positive electrode material adopt the specific ratio, such that the sodium preparation amount is increased, the ratio of the active sodium of the material is improved so as to provide the high capacity of the obtained sodium ion battery, and the residual alkali amount can be maintained within the reasonable range so as to provide the good application prospect. The consistency and the stability of the battery are better under the condition of higher sodium preparation amount.

Preparation method of layered sodium ion battery positive electrode material

The invention relates to a preparation method of a layered sodium-ion battery positive electrode material, belongs to the technical field of sodium-ion batteries, and aims to solve the problem that the capacity and other performances of a sodium-ion battery are influenced due to high residual alkali content of a positive electrode material with high sodium preparation amount prepared by an existing method. According to the present invention, the elements in the positive electrode material adopt the specific ratio, such that the sodium preparation amount is increased, the ratio of the active sodium of the material is improved so as to provide the high capacity of the obtained sodium ion battery, and the residual alkali amount can be maintained within the reasonable range so as to provide the good application prospect. The consistency and the stability of the battery are better under the condition of higher sodium preparation amount.

Layered oxide positive electrode material, preparation method thereof, positive electrode composition, sodium ion secondary battery and application

The invention relates to a layered oxide positive electrode material, a preparation method thereof, a positive electrode composition, a sodium ion secondary battery and application. The positive electrode material is NaxCuyMnzMaO2 + n delta, wherein x is equal to 0.6-1.2, y is equal to 0.05-0.4, z is equal to 0.3-0.8, a is equal to 0-0.6, y + z + a is equal to 0.95-1.05, n is more than 0 and less than or equal to 0.05, delta is equal to-1 to 3, and x * y/z is more than 0.15 and less than 0.4; m is a doping element; the positive electrode material is of an O3 or P2 structure, gamma is equal to d-d0/(x * y2 * z), d is an average value of crystal face interlayer spacing of an O3 material (003) or a P2 material (002), when x is equal to 0.6-0.8, d0 is equal to 5.6076 angstroms, and gamma is smaller than or equal to 2.7; when x is greater than 0.8 and less than or equal to 0.95, d0 is 5.3435 angstroms, and gamma is less than or equal to 3.0 When x is greater than 0.95 and less than or equal ...

Wheel prosthetic devices

... 本实用新型涉及一种车轮修复装置，包括：机架，机架上设有修复装置装夹部；第一旋转机构，第一旋转机构上设有车轮装夹部，第一旋转机构用于带动车轮装夹部转动，并且转动轴线为第一轴线；第二旋转机构；其中，第二旋转机构安装于机架上，第一旋转机构安装于第二旋转机构上，第二旋转机构用于带动第一旋转机构转动，并且转动轴线为第二轴线，第一轴线与第二轴线相交叉。待修复的车轮安装于车轮装夹部上，第二旋转机构、第一旋转机构带动车轮在三维空间内转动，调节车轮的位置和角度，对车轮的不同位置进行修复，便于操作；进行修复修复时，通过第一旋转机构的转动，可以使修复自动进行，效率高。 ...

Core-through ratchet wrench

The invention belongs to the technical field of manual hardware tools, and relates to a cross-core ratchet wrench which comprises a wrench body, a mounting cavity and a mounting through hole with two open ends are formed in the head of the wrench body, a pawl mechanism, a steel ball, a pressure spring and a turning switch are arranged in the mounting cavity, and the pawl mechanism, the steel ball, the pressure spring and the turning switch are mounted in a matched mode. A ratchet wheel is arranged in the mounting through hole; gear teeth are arranged on the outer side of the ratchet wheel and meshed with the pawl mechanism, and a plum blossom through hole is formed in the inner side of the ratchet wheel. A sleeve is further included, one end of the sleeve is an installation end, the installation end can be installed in the plum blossom through hole in a matched mode, and the other end of the sleeve is a nut end used for disassembling a nut; a bolt through hole is formed in the middle of ...

Sodium-ion battery positive electrode material and preparation method thereof

The invention belongs to the technical field of sodium-ion batteries, and discloses a sodium-ion battery positive electrode material and a preparation method thereof. The positive electrode material is of a core-shell structure, an inner core is an O3-phase positive electrode material, an outer shell is a mixture of metal oxide and carbon, and the metal oxide and the carbon account for 0.05-2% and 0.1-5% of the O3-phase positive electrode material in percentage by mass respectively. The carbon source, the metal compound and the sodium-ion battery positive electrode material are mixed and calcined, the metal compound is decomposed into metal oxide, the surface interface of the positive electrode material is modified, the structural stability of the material is improved, the electronic conductivity of the material is improved, and the cycle and rate performance of the material is improved. The carbon source is decomposed to generate carbon, and the carbon layer plays a hydrophobic effect, ...

A/A/O sewage treatment system and method capable of reducing cost and improving efficiency

The invention discloses an A/A/O sewage treatment system and method capable of reducing cost and improving efficiency, and belongs to the technical field of sewage treatment. The system comprises an anaerobic tank, an anoxic tank, an aerobic tank and a secondary sedimentation tank which are sequentially connected, and the bottom of the secondary sedimentation tank is connected with the anaerobic tank through a sludge reflux pump; the bottom of the aerobic tank is connected with the anoxic tank through a nitrification liquid reflux pump; an MABR membrane assembly is arranged in the anoxic tank; the MABR membrane assembly is composed of a plurality of hydrophobic breathable membranes, and the filling density of the membrane area is 60-120 m < 2 >/m < 3 >. The invention also discloses a method for treating sewage by using the A/A/O sewage treatment system. According to the A/A/O sewage treatment system disclosed by the invention, the MABR membrane assembly is additionally arranged in the anoxic ...

Sodium-ion battery positive electrode precursor, sodium-ion battery positive electrode material, preparation method of sodium-ion battery positive electrode material and sodium-ion battery

The invention relates to the technical field of sodium-ion battery positive electrode materials, in particular to a sodium-ion battery positive electrode precursor, a sodium-ion battery positive electrode material, a preparation method of the sodium-ion battery positive electrode precursor and the sodium-ion battery positive electrode material and a sodium-ion battery. The sodium ion battery positive electrode precursor has a core-shell structure, the core of the core-shell structure is a nickel-iron-manganese ternary precursor, and the shell of the core-shell structure is a copper oxide layer; the chemical formula of the nickel-iron-manganese ternary precursor is Ni < x > Fe < y > Mn < z > (OH) < 2 >, xlt; 1, 0lt; yt; Yt; 1, 0lt; zlt, zlt; x + y + z = 1; the nickel-iron-manganese ternary precursor comprises at least one of the following characteristics: D10 = 1.8-3.5 [mu] m; d50 is equal to 3.0 to 5.5 [mu] m; d90 is equal to 5.0 to 7.0 [mu] m; the tap density is 1.3-1.6 g/cm < 3 >; and ...

Sodium-ion battery composite positive electrode material and preparation method thereof, positive electrode plate and sodium-ion battery

The invention relates to the technical field of sodium ion battery positive electrode materials, in particular to a sodium ion battery composite positive electrode material, a preparation method thereof, a positive electrode plate and a sodium ion battery. According to the positive electrode material, a porous material is used as a template, then the Cu and Mn doped sodium ion battery positive electrode material is deposited, so that Cu and Mn form hydroxides to be precipitated in pores and on the surface of the porous material, and then the layered O3 type positive electrode material is coated, so that the problem that material particles are broken due to excessive separation and embedding of sodium ions is effectively solved; particularly, the charge-discharge cycle performance under high voltage is realized.

INTEGRATED GAS DETECTOR INTEGRATING AUDIBLE AND VISUAL ALARMS

An integrated gas detector integrating audible and visual alarms, comprising: an explosion-proof housing, a gas detection unit disposed in the explosion-proof housing and used for detecting gas concentration, and a signal transmission unit disposed in the explosion-proof housing and used for receiving and processing a gas concentration signal from the gas detection unit; the explosion-proof housing comprises a cylinder shaped upper cover (23) having an annular inward flange (231); the signal transmission unit and the gas detection unit are located at the two sides of the annular inward flange (231), and lean respectively against the upper surface and the lower surface of the annular inward flange (231), and are detachably and fixedly connected to each other by a fastening device. The integrated gas detector integrating audible and visual alarms also comprises a visual alarm unit and an audible alarm unit; the visual alarm unit is disposed at the side of the signal transmission unit; the ...

Novel concrete floor grooving device for constructional engineering

The utility model provides a novel concrete floor grooving device for constructional engineering, a movable bottom plate is of a cubic platy structure, adjusting structures are fixedly connected to four corners of the lower end face of the movable bottom plate, the adjusting structures are fixedly connected with guide wheels, a push rod is fixedly connected to the right side of the upper end face of the movable bottom plate, and the push rod is fixedly connected with the movable bottom plate. A driving motor is fixedly connected to the middle of the upper end face of the movable bottom plate, the output end of the driving motor is fixedly connected with a cutting disc, a fixing groove is formed in the position, on the lower side of the cutting disc, of the movable bottom plate, the fixing groove penetrates through the movable bottom plate, and a sliding block is fixedly connected to the upper side of the movable bottom plate. The protruding block on the lower side of the fixed sliding plate ...

INTERFERENCE-REDUCING PROCESSING METHOD, RADIO-FREQUENCY CIRCUIT, AND NETWORK DEVICE

The embodiments of the present application relate to an interference-reducing processing method, radio-frequency circuit, and network device, said method comprising: obtaining the operating states of a network-device LTE module and Wi-Fi module; if the Wi-Fi module is operating and connected to an external wireless local area network, then setting the operating pathway of the Wi-Fi module as a first radio-frequency pathway; if the LTE module is operating and the Wi-Fi module creates a Wi-Fi network, then obtaining the operating frequency point of the LTE module and the operating frequency point of the Wi-Fi module; if an interference frequency point is present among the operating frequency point of the LTE module and the operating frequency point of the Wi-Fi module, then setting the operating pathway of the Wi-Fi module to be a second radio-frequency pathway. If an interference frequency point appears, the second radio-frequency pathway is selected as the operating pathway of the Wi-Fi ...

Composite layered oxide positive electrode material and sodium ion battery

The invention relates to a composite layered oxide positive electrode material and a sodium-ion battery, belongs to the technical field of sodium-ion batteries, and solves the problems that in the prior art, coating of a sodium-ion positive electrode material affects the electrochemical performance of the positive electrode material, so that the capacity of the sodium-ion battery is reduced, the rate capability is reduced and the like. The positive electrode material comprises a base material and a coating material, wherein the coating material contains three elements of Al, Ti and Zr at the same time. According to the invention, the coating material simultaneously contains three elements of Al, Ti and Zr, and can play roles in protecting an interface, inhibiting electrolyte decomposition and resisting flame at a certain temperature on the surface of the positive electrode material, so that the consumption of residual alkali on the surface can be realized, the stability of the positive ...

Layered oxide positive electrode material, preparation method thereof, positive electrode composition, sodium ion secondary battery and application

The invention discloses a layered oxide positive electrode material, a preparation method thereof, a positive electrode composition, a sodium ion secondary battery and application. The general formula of the layered oxide positive electrode material is NaxCuaNibFecMndMyO2 + n delta, each parameter in the general formula has a range defined in the specification, and a doping element M at least comprises Mg + Al + Ti. The CuO impurity phase in the product can be effectively eliminated under the condition that the Cu content is high, and the electrochemical performance of the corresponding sodium ion secondary battery, such as the first effect of a button battery, is improved.

Layered oxide positive electrode material, preparation method thereof, positive electrode composition, sodium ion secondary battery and application

The invention discloses a layered oxide positive electrode material, a preparation method thereof, a positive electrode composition, a sodium ion secondary battery and application. The general formula of the layered oxide positive electrode material is NaxCuaNibFecMndMyO2 + nn delta, each parameter in the general formula has a range defined in the specification, and a doping element M at least comprises Mg + Al + Ti. The CuO impurity phase in the product can be effectively eliminated under the condition that the Cu content is high, and the electrochemical performance of the corresponding sodium ion secondary battery, such as the first effect of a button battery, is improved.

Preparation method of composite layered oxide positive electrode material

The invention relates to a preparation method of a composite layered oxide positive electrode material, belongs to the technical field of sodium-ion batteries, and aims to solve the problems that the capacity of the sodium-ion battery is reduced, the rate capability is reduced, the material consistency is poor and the like due to the fact that the positive electrode material prepared by the existing method is poor in electrical property. The method comprises the following steps that a base material and a coating material are evenly mixed, powder is obtained, and the coating material comprises three elements of Al, Ti and Zr; and calcining the powder at a high temperature, crushing and screening to obtain the composite layered oxide positive electrode material. According to the method disclosed by the invention, the coating material is selected from three elements of Al, Ti and Zr, can play roles in protecting an interface, inhibiting electrolyte decomposition and realizing certain high-temperature ...

METHOD AND DEVICE FOR SELECTING CHANNEL

Disclosed is a method and device for selecting a channel, comprising: obtaining a 5G WiFi channel list corresponding to a current area; calculating an assessment score of each channel belonging to a first channel set in the 5G WiFi channel list, each channel in the first channel set being an outdoor non-DFS channel; and if the highest assessment score of the channels belonging to the first channel set in the 5G WiFi channel list is larger than a first preset threshold, selecting the channel with the highest assessment score as a current working channel. The present application preferably selects a channel with the best quality from outdoor non-DFS channels as the current working channel, thereby avoiding a violation of control domain requirements of some countries in the case that a device works outdoors when an indoor channel is selected, avoiding impacts on user experience caused by that a user terminal that do not support an indoor channel cannot scan an AP, and avoiding the case that ...

Extensible electrostatic dust collection module

The invention discloses an extensible electrostatic dust collection module which comprises a base, a module fixing piece, an electrostatic belt, a module positive electrode and a module negative electrode. The electrostatic belt is gradually wound on the base and is provided with a gap allowing gas to pass through, and the gap forms an electrostatic dust collection cavity; the module fixing piece is used for fixing the electrostatic belt on the base; and the module positive electrode and the module negative electrode are arranged on the base. A high-voltage electric field is formed after the electrostatic belt is electrified, and dust particles can be adsorbed on the surfaces of the two poles under the action of electric field force after being ionized, so that the purpose of dust removal is achieved; the asymptotic linear structure of the electrostatic belt is easy to manufacture, can adapt to design requirements of different occasions, can form an air inlet window through a plurality ...

Sodium-rich layered oxide positive electrode material, preparation method thereof and sodium ion battery

The invention relates to a sodium-rich layered oxide positive electrode material, a preparation method thereof and a sodium-ion battery, belongs to the technical field of sodium-ion batteries, and aims to solve the problem that the capacity and other performances of the sodium-ion battery are influenced due to high residual alkali content of a positive electrode material with high sodium preparation amount in the prior art. According to the present invention, the elements in the positive electrode material adopt the specific ratio, such that the sodium preparation amount is increased, the ratio of the active sodium of the material is improved so as to provide the high capacity of the obtained sodium ion battery, and the residual alkali amount can be maintained within the reasonable range so as to provide the good application prospect. The consistency and the stability of the battery are better under the condition of higher sodium preparation amount.

Ratchet wrench

The invention belongs to the field of hardware tools, and particularly relates to a ratchet wrench which comprises a wrench head and a handle body, ratchets are arranged on the side wall of the other side of the wrench head, a sliding groove axially penetrating through the wrench head is formed between a jaw and the ratchets, a sliding pin shaft is arranged at one end of the handle body, the sliding pin shaft is arranged in the sliding groove, and the handle body is connected with the wrench head. A pawl mechanism is arranged in the handle body and can be matched with the ratchets. The wrench is simple in structure and convenient to use, the meshing state of the handle body and the wrench head can be adjusted by simply pressing the pressing handle, parts can be disassembled only through simple harmonic motion of the handle body, and the wrench can be used in a limited force application space.

Hydrogen sulfide gas detection device and method based on ultraviolet catalysis

The invention discloses a hydrogen sulfide gas detection device and method based on ultraviolet catalysis, and relates to the field of gas concentration detection. The problems of high requirements on a light source and detection equipment, high measurement cost and the like caused by a small hydrogen sulfide gas absorption cross section in the existing hydrogen sulfide gas detection technology are solved. The method comprises the following steps: catalyzing the gas by adopting ultraviolet light to convert hydrogen sulfide gas in the gas into sulfur dioxide gas; continuously collecting the concentration of the sulfur dioxide gas until the collected concentration of the sulfur dioxide gas tends to be stable; obtaining the maximum concentration value in the sulfur dioxide gas concentration; the concentration of the hydrogen sulfide gas is obtained through conversion according to the maximum concentration value and serves as a detection result. According to the method for converting hydrogen ...

LABOUR-SAVING BOLT CUTTER

Provided is a labour-saving bolt cutter, comprising a cutter head (1), linkage arms and a handle (5). The cutter head (1) is connected to the upper ends of the linkage arms, and the handle (5) is connected to the lower ends of the linkage arms. The linkage arms comprise a left linkage arm (2), a first right linkage arm (3) and a second right linkage arm (4), the upper end of the left linkage arm (2) being provided with a left cutter head connecting hole (21) connected to a left cutter head (11), a first hole (22), and a second hole (23) from the left to the right, the lower end of the left linkage arm (2) being connected to the handle (5), and the upper end of the first right linkage arm (3) being provided with a third hole (31) and a right cutter head connecting hole (32) connected to a right cutter head (12). The first hole (22) and the third hole (31) are connected via a bolt, a long hole (33) is provided in the lower end of the first right linkage arm (3), and a fourth hole (41) is ...

Layered oxide positive electrode material, preparation method thereof, positive electrode composition, sodium ion secondary battery and application

The invention relates to a layered oxide positive electrode material, a preparation method thereof, a positive electrode composition, a sodium ion secondary battery and application. The layered oxide positive electrode material has a general formula NaxCuaMnbFecMdOe, x is equal to 0.90-1.10, a is equal to 0.10-0.40, b is equal to 0.20-0.80, c is equal to 0.20-0.40, d is equal to 0-0.50, e is equal to 1.70-2.40, M is a doping element, the volume average particle size of the layered oxide positive electrode material meets the condition that (Dv10 + Dv90)/Dv50 is larger than or equal to 1.30 and smaller than or equal to 1.50, and the maximum particle size Dmax of the layered oxide positive electrode material is smaller than or equal to 15.50 microns; and the minimum particle size Dmin of the layered oxide positive electrode material is greater than or equal to 0.45 mu m. The layered oxide positive electrode material provided by the invention has good air stability, first effect, rate discharge ...

Three-dimensional multi-target tracking method fusing point cloud and image information

A three-dimensional multi-target tracking method fusing point cloud and image information belongs to the field of computer vision technology and image processing, and comprises the following steps: associating the same target detected by a laser radar and a camera, and sorting according to the output confidence score based on a three-dimensional detection frame output by a three-dimensional target detector; and for a high-score three-dimensional detection frame, directly carrying out coordinate-based data association, and for a low-score three-dimensional detection frame, continuing to use features of a two-dimensional detection frame of the same target matched with the low-score three-dimensional detection frame in a target sub-region and a space background of a feature extraction network to continue to mine a shielding target in a scene. Therefore, the problems of target loss and frequent identity switching caused by mutual shielding between tracking targets and between the tracking target ...

O3 type layered positive electrode material, preparation method thereof and sodium ion battery

The invention relates to the technical field of sodium ion batteries, in particular to an O3 type layered positive electrode material, a preparation method thereof and a sodium ion battery. The preparation method of the O3 type layered positive electrode material comprises the following steps: S1, reacting ferric salt, nickel salt and an organic ligand in a solvent to obtain Fe/Ni-MOF; s2, in-situ growth of delta-MnO2 is carried out on the surface of the Fe/Ni-MOF, and delta-MnO2 (at) Fe/Ni-MOF is obtained; and S3, sintering the mixed material of the delta-MnO2 (at) Fe/Ni-MOF, the sodium source and the titanium source to obtain the positive electrode material. The positive electrode material prepared by the preparation method of the O3 type layered positive electrode material has excellent structural stability under a high-pressure condition, does not easily have a particle fracture phenomenon, and shows excellent cycle performance and rate capability; and the air stability is excellent ...

Preparation method of sodium battery positive electrode material and battery thereof

The invention discloses a preparation method of a sodium battery positive electrode material, and the preparation method comprises the following steps: mixing and sintering a Ni1/3Fe1/3Mn1/3 (OH) 2 precursor, copper oxide, a sodium source capable of decomposing to generate oxygen, and a variable valence oxide capable of storing and releasing oxygen through oxidation reduction, at least one part of oxygen in the variable valence oxide stored oxygen is from oxygen generated by decomposing a sodium source. The obtained sodium battery positive electrode material has a round single crystal morphology, and the cycle performance of a battery can be improved when the obtained sodium battery positive electrode material is applied to the battery.

Preparation method of sodium-rich layered oxide positive electrode material

The invention relates to a preparation method of a sodium-rich layered oxide positive electrode material, belongs to the technical field of sodium-ion batteries, and aims to solve the problem that the capacity and other performances of the sodium-ion battery are influenced by high residual alkali content of a positive electrode material with high sodium preparation amount prepared by the existing method. According to the positive electrode material prepared through the method, all elements are in a specific proportion, the sodium preparation amount is increased, the proportion of active sodium of the material is increased, then the obtained sodium-ion battery has the high capacity, the residual alkali amount can be kept within the reasonable range through the positive electrode material prepared through the method, and the service life of the sodium-ion battery is prolonged. The consistency and the stability of the battery are better under the condition of higher sodium preparation amount ...

Labor-saving cutting pliers

The invention belongs to the technical field of manual hardware tools, and relates to a labor-saving wire cutter which comprises a large cutter body, a small cutter body and a movable handle, the middle of the large cutter body and the middle of the small cutter body are movably connected through a first rivet, and the large cutter body and the small cutter body can rotate around the first rivet. One end of the movable handle is movably connected with one end of the small clamp body through a second rivet, and the movable handle and the small clamp body can rotate around the second rivet; the middle of the large pincer body is provided with pincer body gear teeth distributed in a circular arc mode, one end of the movable handle is provided with handle gear teeth distributed in a circular arc mode, and the pincer body gear teeth are meshed with the handle gear teeth. The diameter of a reference circle where each gear tooth in the clamp body gear teeth is located is gradually decreased, and ...

Stride across measurement turnover case loading and unloading appurtenance of step obstacle

... 本实用新型公开了种跨越台阶式障碍的计量周转箱装卸辅助工具，属于电能计量资产配送技术领域，其结构包括至少个支架，所述的支架包括纵向部分和横向部分，所述横向部分的端固定连接在所述纵向部分的顶端；所述横向部分的上表面设置有顶板，所述顶板完全覆盖所述横向部分的上表面并在所述横向部分远离所述纵向部分的端延伸至所述横向部分的外部。使用时，将支架的纵向部分支撑在地面上，将顶板搭接在台阶上，形成个延伸的平面，辅助工作人员将计量周转箱从运输车辆上卸下并转运至电能计量库房内，可以平稳、省力的跨越台阶式障碍，避免了直接搬运过程中冲击、震荡对电能表的损坏。 ...

Aviation intelligent self-inspection multi-scene universal unmanned vehicle system

The invention relates to the technical field of aviation equipment, and discloses an aviation intelligent self-inspection multi-scene universal unmanned vehicle system. The system comprises an unmanned vehicle body, and an automatic driving module, an image scanning module, a comparison self-inspection analysis module and a wireless transmission module which are arranged on the vehicle body, the self-inspection analysis module is connected with a background remote supervision center and a data storage center through the wireless transmission module, and the self-inspection analysis module can compare image information collected by the image scanning module with information set by the background remote supervision center to judge defects; and the background remote supervision center communicates with the unmanned vehicle in real time through the wireless transmission module. The data storage center can record maintenance data of the background remote supervision center, and the data storage ...

Unsupervised target tracking method based on sparse attention updating template features

An unsupervised target tracking method based on sparse attention updating template features belongs to the field of target tracking and deep learning, and adopts SiameseRPN region proposal network output features and initial template features as input of a template updating network to generate new template features, tracking is carried out by using the updated template features in subsequent frames, and target tracking efficiency is improved. The template is updated by using the proposed template updating network, so that the problems that the information is exponentially attenuated along with time due to linear combination of the current template and the accumulated template of the previous frame, the sparse attention in the template updating network solves the problem that the background distracts attention and the like are solved, and the updating of template features is realized. A sparse Transform is used as a main body for updating a template network, fusion features containing rich ...

Ultra-wide free-form surface off-axis two-mirror telescopic system

The invention relates to an ultra-wide free-form surface off-axis double-reflector telescopic system, which comprises a first reflector, an aperture diaphragm, a second reflector and an image surface, target incident light firstly passes through the first reflecting mirror and is gathered at the aperture diaphragm, and then is imaged at the image surface through the second reflecting mirror. The aperture diaphragm is located at the front focus position of the second reflector, so that the telescopic system is an image space telecentric system, and the grating beam splitting system with a slit is placed at an image plane to facilitate pupil matching. The first reflecting mirror and the second reflecting mirror have different radiuses, adopt free-form surfaces and are used for carrying out aberration correction on a full view field to realize high-quality imaging. The telescope system is an off-axis system and adopts off-axis design, and a certain included angle is formed between the first ...

Labor-saving tool for shearing steel wire rope

The invention belongs to the technical field of manual hardware tools, and particularly relates to a labor-saving tool for shearing a steel wire rope, which comprises an upper plier body, a lower plier body and a bolt, the upper plier body and the lower plier body are movably connected through the bolt, the labor-saving tool further comprises a linkage handle, one end of the linkage handle is movably connected with the upper plier body through a first rivet, and the other end of the linkage handle is movably connected with the lower plier body through a second rivet. The linkage handle can rotate around the first rivet; a sliding groove is formed in the lower clamp body, a second rivet is arranged in the middle of the linkage handle, the second rivet is matched with the sliding groove, and the second rivet can move in the sliding groove along the sliding groove. The device is small and compact in structure, safe and convenient to use and operate, low in cost, simple to process and assemble ...

Multifunctional composite slit for space spectrometer

The invention provides a multifunctional composite slit device for a space spectrometer, which is characterized in that two glass cuboids are respectively mounted on a support frame, one glass cuboid is provided with an optical reflecting surface, and straight edges of the two glass cuboids jointly form a composite optical slit through the mounting position; the straight edge is used as a working edge and is formed by intersecting two adjacent planes of the glass cuboid; the composite optical slit is used for realizing a slit function, field-of-view light splitting and light path reflex of the two detection channels are realized, the light path of one detection channel continues to propagate forwards through the optical slit, and the light path of the other detection channel is reflex to a specified direction through a reflection area of one of the glass cuboids. And a relay lens is mounted on the supporting frame in the specified direction.

Preparation method of coated modified sodium ion positive electrode material

The invention relates to a preparation method of a coated modified sodium ion positive electrode material, belongs to the technical field of sodium ion batteries, and solves the problems that the coating amount and the coating uniformity of the sodium ion positive electrode material are difficult to control and the like in the prior art. According to the method, Na, Cu and M are adopted as base materials, the molar ratio of Na is larger than or equal to 0.65 and smaller than or equal to 1, the molar ratio of Cu is larger than or equal to 0 and smaller than or equal to 0.35, M is z, the sum of the molar ratio of Cu and the molar ratio z of M is 1, and a coating layer is prepared by adopting a coating agent with three valence states of R1, R2 and R3. A coating layer material generated on the surface of the positive electrode material at least comprises main elements of copper and manganese and at least three valence state coating elements, and a homogeneous high-entropy coating layer (Na/ ...

Layered oxide positive electrode material, preparation method thereof, positive electrode composition, sodium ion secondary battery and application

The invention discloses a layered oxide positive electrode material, a preparation method thereof, a positive electrode composition, a sodium ion secondary battery and application. The general formula of the layered oxide positive electrode material is NaxCuaNibFecMndMyO2 + n delta, each parameter in the general formula has a range defined in the specification, and a doping element M at least comprises Mg + Al + Ti. The CuO impurity phase in the product can be effectively eliminated under the condition that the Cu content is high, and the electrochemical performance of the corresponding sodium ion secondary battery, such as the first effect of a button battery, is improved.

Positive electrode material, preparation method thereof and sodium ion battery

The invention relates to the technical field of sodium-ion batteries, in particular to a positive electrode material, a preparation method thereof and a sodium-ion battery. The positive electrode material comprises a layered O3 type oxide and a coating layer coating the surface of the layered O3 type oxide, the chemical formula of the layered O3 type oxide is Na < 1-x > Cu < y > Ni < 1/3-y > Fe < 1/3 > Mn < 1/3 > O < 2 >; in the formula, x is not less than-0.04 and not more than 0.03, and y is not less than 0.04 and not more than 0.11; the layered O3 type oxide has a porous structure; the coating layer comprises titanium sodium phosphate and/or metal-doped titanium sodium phosphate. The pore structure in the positive electrode material can relieve particle fracture caused by charge-discharge deformation, and is beneficial to transmission of Na ions; the coating layer can prevent the internal material from being in direct contact with the electrolyte, stabilize the surface interface and ...

Shielded human body posture estimation corrector based on key point interconnection and correction method

The invention discloses a shielded human body posture estimation corrector based on key point interconnection and a correction method, and belongs to the technical field of human body posture estimation computer visual recognition. The invention discloses a pluggable shielded human body posture estimation corrector based on key point interconnection, which is directly connected to the tail end of a traditional human body posture estimation network to correct a thermodynamic diagram estimated by the traditional network. And a more accurate real thermodynamic diagram is obtained, so that the accuracy of an output human body posture estimation result is further ensured. In the corrector, a related mathematical model is established by utilizing the interrelation between different key points, the internal relation between a neural network and the key points is comprehensively considered, an implicit key point interconnection network is reasonably established, key points with relatively good ...

Multi-hop retrieval method and system based on knowledge graph embedding and path information

The invention provides a multi-hop retrieval method and system based on knowledge graph embedding and path information. The method comprises the following steps: firstly, obtaining a natural language question, a subject entity of the question, an answer of the question and a relation path of the answer; secondly, performing embedded representation on all entities and relationships in the knowledge graph; thirdly, performing question embedding on the natural language question; then, path embedding is carried out on the relation path; then, splicing by using subject entity embedding, question embedding and question answer embedding; the splicing vector and a natural question sentence are embedded and sent into a relational memory network, and remapped question embedding is obtained; and finally, inputting the remapped problem embedding and the subject entity embedding into a scoring function, and selecting the entity with the highest score as a prediction result. The method is used for enhancing ...

Terminal device and wireless communication method

Provided are a terminal device and a wireless communication method, when the terminal device is in a dual-connection network comprising an LTE link and an NR link, the terminal device can determine whether to disconnect the NR link according to a service transmission rate related to an actual transmission rate, and if the service transmission rate is small, disconnect the NR link; and if the service transmission rate is relatively high, the first link is not disconnected, and the NR link and the LTE link are adopted for communication at the same time. Therefore, under the condition that the user experience in the aspect of speed is not influenced, the power consumption of the terminal equipment can be effectively reduced, the user experience in the aspect of power consumption is improved, and the user experience in the aspect of transmission speed and power consumption is balanced to a certain extent.