205results about How to "Resolve failure" patented technology

The invention belongs to the technical field of gas cylinder accessories, and particularly relates to an IV-type gas cylinder hoop and a fixing device. The device comprises a gas cylinder bandage, a radial expansion mechanism, a support, a gas cylinder support guide mechanism, a sliding base and a plurality of diameter compensation mechanisms with different thicknesses. The radial expansion mechanism is composed of a radial expansion guider I, a radial expansion compensator, a radial expansion guider II and a bandage locking nut from top to bottom, and the radial expansion compensator is a spring; a sliding groove is formed in the support. The two tail ends of the gas cylinder bandage penetrate through the corresponding sliding grooves through welded studs and are screwed to be installed on the support together with the radial expansion mechanism. The device is easy to assemble, high in efficiency, good in product interchangeability and consistency, and capable of absorbing the swelling amount of the gas cylinder in the diameter direction and the length direction due to the modular and lightweight design.

The invention provides an electric vehicle charging load analysis system based on deep learning and real-time traffic simulation. The system comprises an offline simulation deduction module, a deep neural network training module and an online simulation deduction module. An energy consumption model is constructed by collecting an electric vehicle starting toll station record, ETC door frame vehicle passing information and service area charging station data in an expressway, and offline simulation deduction is achieved. The deep neural network adopts a self-attention mechanism model, and combines a multi-head attention mechanism and time sequence coding to predict the EV charging load. The on-line simulation deduction module collects vehicle data in real time and carries out prediction based on real-time traffic simulation software. And performing weighted analysis and dynamic adjustment on simulation and deep learning prediction results through a feedback mechanism so as to improve the prediction precision. Through the distributed calculation and real-time data processing technology, mass data can be efficiently processed, accurate charging demand prediction is provided, and the method adapts to dynamic changes in different scenes.

The invention discloses a foot-ground contact force estimation and terrain classification method of an ostrich-imitating robot. The method comprises the steps that a foot-ground contact force mapping matrix of the ostrich-imitating robot is constructed, force-position hybrid control is carried out, foot-ground contact force is obtained according to the matrix and input torque of a plate spring to a passive joint, and terrain classification information is obtained after the ground contact state is judged; establishing a terrain classification fusion model based on a weighted voting mechanism, and training the model according to terrain classification information; and performing terrain classification according to the terrain classification information and the trained model. The foot-ground contact force is estimated through the joint corner information of the robot, no extra sensor needs to be installed, real-time and accurate foot-ground contact force estimation and contact state obtaining are achieved, the problem that the performance of an ostrich-imitating robot system is reduced or fails due to the fact that a force sensor is prone to being damaged is effectively solved, system configuration is simplified, and the system reliability is improved. Foot-ground contact force estimation and accurate terrain classification of the ostrich-imitating robot can be completed without depending on an external sensor.

The invention discloses a multi-system-disk redundancy method, device and equipment and a readable storage medium, and is applied to the field of backup, and the tail end areas of a plurality of target system disks serve as backup areas; taking other areas except the backup area in the target system disk as combined areas, and combining the combined areas to obtain a mirror image redundant array; and partitioning the mirror redundant array to obtain a main partition table and a backup partition table, writing the main partition table into a head end region of the mirror redundant array, and writing the backup partition table into a backup region. The method has the beneficial effects that the method is realized based on a soft function, hardware resources do not need to be modified and increased, and the cost is relatively low; according to the fixed reading principle of the system, the system can read the backup partition table at the tail end of the system disk all the time, the problem that the backup partition table fails due to GPT partition in the mirror image redundant array construction process is solved, the mirror image redundant array has high safety and stability, and the redundancy effect of the mirror image redundant array is better.

The invention belongs to the technical field of signal processing, and particularly relates to an under-snapshot 2D-MUSIC direction finding method based on spatial translation invariance. According to the method, the space translation invariant characteristic of a uniform linear array or a uniform planar array is utilized, a calculation method of a forward and backward space-time cross-correlation function is provided, a pseudo covariance matrix is constructed by using the space-time cross-correlation function based on the Hermitian-block Toeplitz characteristic of a signal ideal covariance matrix, then a MUSIC spatial spectrum is constructed, and the wave direction is extracted. Compared with a traditional 2D-MUSIC algorithm, the method still can maintain the high-precision angle estimation capability under the condition that the number of snapshots is limited, and does not greatly improve the calculation amount. Compared with a spatial smoothing MUSIC algorithm, the method does not need to divide sub-arrays, fully utilizes the full array aperture, and avoids the loss of resolution.

The invention relates to a power transmission line disconnection fault protection method, device and equipment and a storage medium, and the method comprises the steps: collecting a phase voltage value, a zero sequence voltage value and two groups of phase current values of a power transmission line in real time, carrying out the real-time monitoring of a circuit breaker, and obtaining a position state signal; according to the phase current value and the position state signal, whether the current transformer has a disconnection fault is judged in real time, and when the current transformer has the disconnection fault, a CT disconnection signal is output; obtaining a current break variable of the transmission line, calculating a self-produced zero-sequence current according to the phase current value, judging whether the self-produced zero-sequence current, the zero-sequence voltage value or the current break variable meets a preset condition or not, and if yes, outputting a disconnection protection starting signal; and after disconnection protection is started, judging whether the power transmission line has a disconnection fault or not according to the phase voltage value, the phase current value, the position state signal and the CT disconnection signal, and if the judgment result is yes, outputting a circuit breaker tripping outlet and a starting failure outlet.

The invention discloses an FADS system data processing method, a data processing system and an FADS system. The FADS system data processing method comprises the following steps: S1, acquiring atmospheric pressure data measured by each measurement module of the FADS system; s2, performing fault analysis on the acquired data by adopting a fault detection method based on a principal component analysis method, and removing fault point data in the data; and S3, evaluating the credibility of the measurement data of each measurement module by adopting a trust calculation method based on an evidence theory, selecting the test data of the measurement module with high membership degree and high mutual support degree after being processed in the step S2, and carrying out atmospheric calculation to obtain atmospheric parameter data. By processing the atmospheric pressure measurement data, automatically removing fault point data in the atmospheric pressure measurement data and screening out data with high credibility for atmospheric calculation, atmospheric parameter information data obtained by calculation is more accurate, and the problem of FADS system failure caused by faults of an embedded pressure sensor in an FADS system is well solved.

The invention discloses a method for evaluating the recoverability of vegetation in an engineering disturbance area. The current vegetation restoration engineering has many problems in practice. Eight key environmental indexes including monthly precipitation, monthly average temperature, soil utilization type, soil moisture content, soil freeze-thaw days, altitude, gradient and vegetation coverage are selected to assess regional ecological conditions, standardized processing and multi-factor overlay analysis are adopted, grid algebraic operation is combined, processed data are substituted into a vegetation recoverability assessment model, and a vegetation recoverability assessment model is established. Results are visualized through a GIS spatial analysis technology, an evaluation chart is generated, and comprehensive evaluation of vegetation restorability is achieved; and a geographic detector model is further utilized to detect and analyze key factors influencing the vegetation restorability and the interaction of the key factors. According to the method, the problem of low vegetation restoration efficiency or failure caused by lack of scientific evaluation in the existing vegetation restoration project is solved.

The invention provides conductive silver paste and a preparation method thereof, and relates to the technical field of electronic paste. The conductive silver paste comprises conductive silver powder, a gallium-based liquid metal-based composite functional material, an organic resin binding phase, a curing agent, an organic solvent and an auxiliary agent, wherein the conductive silver powder is 55-75 parts by weight; the weight part of the gallium-based liquid metal-based composite functional material is 5-25; the weight part of the organic resin binding phase is 4-10; the weight part of the curing agent is 1-3; the weight part of the organic solvent is 2-10; the weight part of the auxiliary agent is 0.1-10 parts; the gallium-based liquid metal-based composite functional material comprises gallium-based liquid metal, a conductive polymer and a few-layer two-dimensional material, wherein the gallium-based liquid metal comprises one or more of gallium, gallium-tin alloy, gallium-indium alloy, gallium-indium-tin alloy or gallium-indium-tin-zinc alloy; the conductive polymer comprises one or more of polypyrrole, polydopamine or polyaniline; the few-layer two-dimensional material comprises graphene or transition metal carbide.

The invention provides a high-temperature-resistant electric connector and a preparation method thereof, and relates to the technical field of electric connectors. The high-temperature-resistant electric connector comprises a contact body, an insulator, a shell and a split ring structure, the split ring structure is arranged between the insulator and the shell, the split ring structure comprises an annular side wall and a base connected to one axial end of the annular side wall, the base and the annular side wall define a cavity used for containing the insulator, a notch is formed in the annular side wall, and the insulator is arranged in the cavity. The notch extends in the axial direction of the annular side wall, and one end of the notch communicates with the opening of the cavity. The split ring structure is additionally arranged between the insulator and the shell, sealing connection between the insulator, the contact body and the split ring structure is achieved through brazing, internal stress concentration during service of the insulator and the shell is remarkably reduced, and the sealing reliability between the insulator and the shell in the electric connector at the high temperature is improved; and the sealing performance of the product can meet the actual use requirement.

The invention discloses an indoor temperature presumption method, an air conditioning system and a computer storage medium, and the presumption method comprises the steps that a temperature compensation value is obtained; according to wireless communication interruption between the air conditioner and the control equipment, the first temperature of the environment where the air conditioner is located is obtained; and determining the sum of the first temperature and the temperature compensation value as the indoor temperature. According to the presumption method, the first temperature of the environment where the air conditioner is located and the temperature compensation value are added to serve as the presumption numerical value of the indoor temperature, and the problem that indoor temperature obtaining lags or fails in the communication interruption process is solved; the presumption value of the indoor temperature is closer to the actual value of the indoor temperature relative to the first temperature of the environment where the air conditioner is located, so that operation of the air conditioner is closer to the actual requirement of a user, and the accuracy of automatic control over operation of the air conditioner is improved.

The invention belongs to the technical field of sensors, and particularly relates to an MEMS differential pressure sensor and a preparation method thereof. The MEMS differential pressure sensor comprises a substrate, a vibrating diaphragm part, a back pole part and a supporting part, a back hole structure is arranged in the substrate, the vibrating diaphragm part is arranged on one side of the substrate and seals the back hole structure, the back pole part is arranged on one side, away from the substrate, of the vibrating diaphragm part and is connected with the vibrating diaphragm part, the vibrating diaphragm part is connected with the substrate through the supporting part, and an air leakage channel is arranged in the supporting part. The air leakage channel is communicated with the back hole structure and the outside of the base. According to the MEMS differential pressure sensor provided by the embodiment of the invention, the air leakage channel is arranged in the supporting part instead of forming an air leakage hole in the vibrating diaphragm, so that external pollutants are prevented from directly entering the gap area through the air leakage hole, and the MEMS differential pressure sensor is prevented from losing efficacy due to the external pollutants in the gap area. Meanwhile, the air leakage channel is communicated with the back hole structure and the outside of the base, so that good air leakage performance can be maintained.

The invention discloses an EPDT multi-hop ad hoc network service route switching method, system and device and a medium, and the method comprises the steps that a node B receives a frame sent by a node A, detects a frame synchronization error rate and an RSSI value, and sends a forwarding node switching control frame in a next transmitting time slot if the values exceed a threshold value; the node B is converted into a receiving node and waits for receiving a request control frame of a new forwarding node; the peripheral nodes of the node B receive the switching control frame of the forwarding node, and if the switching frequency of the previous node can be received, the request control frame is sent according to the sequence of addresses in the frame; the node B receives the request control frame, judges a node B1 more suitable for serving as a new forwarding node according to the received RSSI value of the node A and the bit error rate of the intermediate control bit, and sends a request confirmation control frame after confirming the new forwarding node; and switching to a new forwarding node, and establishing a new forwarding link for routing. According to the invention, route switching can be carried out on the premise of not influencing the whole call.

The utility model belongs to the field of electronic equipment, and provides an elastic needle, a liquid discharge assembly and an earphone charging box, the elastic needle comprises a needle tube, a needle head and an elastic piece, the needle tube is internally provided with an accommodating cavity, two opposite ends of the needle tube are respectively a first end and a second end, the first end is provided with a first through hole communicated with the accommodating cavity, and the second end is provided with a second through hole communicated with the accommodating cavity; the second end is further provided with an inclined face facing the containing cavity. The needle head movably penetrates through the accommodating cavity through the first through hole; the elastic piece is arranged in the containing cavity. The liquid discharging assembly comprises an elastic needle and absorbent cotton. The earphone charging box comprises a liquid discharge assembly. According to the vibrating needle, the second through hole communicated with the containing cavity is formed in the second end, when external liquid flows to the bottom in the containing cavity from the first through hole along the side wall of the needle head, the liquid can flow downwards along the inclined face and is finally discharged out of the second through hole, and crystal particles of the liquid are effectively prevented from being accumulated on the inner wall of the needle tube; the problem that liquid forms crystals in the needle tube, and consequently the vibrating needle loses efficacy is solved.

The invention relates to the technical field of central gas sources, solves the problems that an existing central gas source is poor in output gas quality, tedious in system connection, low in integration level and inconvenient to assemble, and discloses a central gas source for external load gas supply, which comprises a pneumatic block, a compressor assembly, an ECU controller assembly and a dryer assembly. The compressor assembly is installed on the side face of the pneumatic block. The pneumatic block is of an integrally-formed structure, a switching valve set, an air valve set, an air inlet one-way valve, an air filter, a power limiting valve and a sensor assembly are integrated in the pneumatic block, and a valve seat for air inlet and exhaust and an air pipe connector are arranged in front of the pneumatic block. The ECU controller assembly is located on the rear end face of the pneumatic block and is parallel to the motor. The dryer assembly is located on the lower end face of the pneumatic block. And an external load inflation valve is also arranged in the pneumatic block. According to the invention, the integration level of the system is improved, external pipelines are reduced, the system structure is simplified, the installation and maintenance are more convenient, and the fault occurrence rate is reduced.

The utility model relates to a tunnel construction technology field especially relates to a kind of tunnel construction drilling mechanism, including support base, drill bit base, drilling drill bit and induction drill bit, drill bit base is provided in support base upper end, drilling drill bit is provided in drill bit base inside, induction drill bit is provided in the inside of drilling drill bit;Drilling drill bit is movably installed in drill bit base inside, and drilling drill bit is hollow structure, and induction drill bit is movably installed in the inside of drilling drill bit, contact head is provided in the front end of induction drill bit, and the edge of contact head is zigzag, and contact head and drilling drill bit front end are in same vertical position. In the utility model, drilling drill bit provides space for mechanical linkage, and the zigzag design of contact head enhances the mechanical sensitivity of induction drill bit to formation change, ensures that the resistance change is transmitted to induction drill bit, and by capturing the mutation signal of this rotating resistance, indirect induction to the front end of drill bit Real-time formation change can be realized, solve the problem of conventional inductor failure under high temperature environment.

Embodiments of the present application provide a deep scanning method, an electronic device, a storage medium and a program product, the method comprising: receiving a first message request sent by a client; determining a first scanning state corresponding to the first message request according to the first message request; cyclically receiving an Nth message request sent by the client, changing the first scanning state to a second scanning state after scanning a cache file is completed; and in the case that the second scanning state is a scanning end, sending the cache file corresponding to the first message request to a server, adding a state machine for sensing a scanning state, used for maintaining a state and a corresponding operation of a scanning service, so that multiple message requests can be processed in a case of a long connection, and each scanning state is identified, the problem of invalid deep scanning service in a long connection multiple request scenario is solved, the scanning efficiency is improved, and the scanning time is reduced.

This invention discloses a phase-shifted full-bridge plasma power supply based on all SiC devices, belonging to the field of special power supply technology. It includes: a rectifier unit with a power factor correction circuit; an inverter unit containing a phase-shifted full-bridge topology composed of SiC power devices and an energy storage inductor, achieving zero-voltage switching through phase-shift control; a transformer unit; an output unit including an output filter capacitor; and a control unit that uses an incremental PID algorithm to generate phase-shift control signals. This invention analyzes the differences in zero-voltage switching between the leading and lagging bridge arms, utilizes the low output capacitance characteristics and dynamic dead-time adjustment of SiC devices, broadens the soft-switching range under light loads, effectively reduces output current ripple, and improves dynamic response speed and overall efficiency.

The application provides a flapping mechanism with independently controllable flapping start position, comprising a wing rod, a connecting rod A, a connecting rod linear servo, a motor gear, a connecting rod B, a transmission wheel A, a transmission wheel B, a swing rod connecting piece, a rocker connecting piece, a micro linear servo, a speed reduction motor, a fuselage support and a swing rod linear servo. The application generates active yawing torque by flapping difference of two sides of the wing surface, fundamentally solves the problem that the vertical tail fails in the case of low flow velocity, and also solves the problems of poor disturbance resistance and poor maneuverability of the flapping wing aircraft in the low speed case. In addition, in the gliding stage, the upwash angle of the two sides of the wing surface and the tail can be controlled respectively, so that more bionic, flexible and efficient gliding flight is realized. The sub-aircraft has the characteristics of flight attitude bionics, strong visual confusion, low flight noise and high efficiency, and can be used in outdoor close-range reconnaissance, high-altitude long-endurance surveillance reconnaissance, wild animal close-range video shooting and other task scenes, and has important significance and value in the future.

This application discloses an intelligent monitoring method and system for sand and gravel concrete refrigeration equipment, relating to the field of intelligent equipment monitoring. It utilizes dual-channel sensors deployed in parallel inside and outside the air duct to collect mixed signals including airflow sound and ambient background noise. Through timestamp synchronization and adaptive background noise cancellation processing, the pure airflow friction sound signal is effectively extracted. Furthermore, specific modulation is generated on the high-frequency acoustic characteristics of the flowing air, and the acoustic roughness index is calculated by quantizing and extracting the microscopic roughness acoustic fingerprint from the high-frequency acoustic fingerprint feature spectrum. Based on this, the system monitors the acoustic fingerprint evolution trajectory, accurately determines the current frosting phase state, and generates optimized calibration control commands at the initial stage of frosting, realizing proactive defensive adjustment of the refrigeration unit, thereby solving the problems of monitoring failure and defrosting control lag in existing technologies.

The utility model provides clothes processing equipment and an outer cylinder assembly thereof, the outer cylinder assembly comprises an outer cylinder and a counterweight part, the outer cylinder comprises a front outer cylinder and a rear outer cylinder which are connected with each other, the front outer cylinder and / or the rear outer cylinder form a counterweight cavity, and an opening of the counterweight cavity is formed in the axial direction of the outer cylinder; the counterweight part is arranged in the counterweight cavity, and after the front outer cylinder and the rear outer cylinder are connected, the opening of the counterweight cavity is covered by the front outer cylinder and / or the rear outer cylinder. The front outer cylinder and the rear outer cylinder which are connected with each other are arranged, the balance weight cavity is formed after the front outer cylinder and the rear outer cylinder are connected, the balance weight piece is arranged in the balance weight cavity, and original structures such as an installation base and an installation bolt are omitted. On one hand, vibration and noise generated during rotation of the roller are reduced, and meanwhile the problem that a balance weight piece loses efficacy due to looseness or breakage of an installation bolt is effectively solved; on the other hand, the number of parts is reduced, and the advantages of reducing production cost, reducing installation steps, improving assembly efficiency and the like are achieved.

The present invention discloses an alternating feeding device for processing electronic components, and the present invention relates to the technical field of processing electronic components, including a base, a bracket fixedly connected to the top of the base near the edge, and a visual detector fixedly connected to the top of the bracket. The alternating feeding device for processing electronic components achieves that the hydraulic cylinder drives the bending rod to move upward, and cooperates with the movement of the electric cylinder, so that the insulating substrate is lifted and driven to the top of the second conveyor belt, and the feeding mechanism positions and clamps the pin plate and then flips the pin plate and conveys it to the top of the substrate. In this process, the pin plate and the substrate are alternately fed separately in the height direction, replacing the cooperative conveying of the manipulator. After the substrate and the pin plate are joined, they can be conveyed and exported by the first conveyor belt for subsequent processing steps, which solves the problem that when the pin plate is joined to the heat-conducting substrate, the existing multi-manipulator for taking and placing materials often causes the entire system to fail due to errors in the control program.

The invention discloses a high-speed communication method based on an embedded instrument. The high-speed communication method comprises the following steps that S1, the instrument receives protocol data; s2, analyzing the protocol data, and extracting effective instructions in the protocol data; s3, setting an instruction buffer pool, and storing the effective instruction into the instruction buffer pool; s4, sending a protocol data receiving response to the test system; and S5, the instrument analyzes and responds to the effective instruction in the instruction buffer pool when the resource is idle, and then waits for receiving the instruction next time. According to the method, the cache thread is additionally arranged, so that temporary storage of the ASCII instruction after the instrument equipment completes VXI-11 unpacking is realized, and resource scheduling is facilitated to complete analysis and response of the ASCII instruction when the instrument is idle. Through the method, the instrument responds to the message when the resource is idle, and message blocking or instruction response failure caused by a high-priority task is avoided. The problems of instruction failure and error response during rapid receiving of instrument equipment during high-speed VXI-11 communication are effectively solved.

The present invention relates to a household submersible pump, which comprises a pump seat, a pump body and a signal lamp assembly, wherein the pump seat is provided with a water outlet, a water inlet and a first filter screen; the pump body comprises a pump inner shell and a pump outer shell, the pump inner shell has an inner electrical cavity and a front mounting seat, the inner electrical cavity is provided with a circuit board, and the pump outer shell has a front guide seat; the signal lamp assembly comprises a signal lamp and a light guide column with a waterproof sealing ring embedded thereon; the signal lamp is connected to the circuit board, the light guide column is arranged to be able to penetrate the front guide seat and insert the front mounting seat in a first state and rotate to a second state locked in the front mounting seat, and is arranged to be able to guide the light of the signal lamp out of the pump housing. The present invention not only realizes the outward propagation of light but also realizes IPX8 waterproofing.

The invention relates to the technical field of sealing technologies, in particular to a deep stratum CO2 adsorption, sealing and isolation failure self-coupling repairing method which comprises the following steps: S10, spraying a Li salt culture medium and Li-CO2 sensitive salt-tolerant anaerobic fungi at the position 5 meters thick on the outer vertical surface of an isolation layer of a CO2 adsorption layer to form an isolation layer technology implementation area; s20, an initial Li salt culture medium contains high-concentration insoluble Li2CO3, but the concentration of water-soluble LiHCO3 and CO2 in an isolation layer technology implementation area is too low, and the growth conditions of Li-CO2 sensitive salt-tolerant anaerobic fungi are not met; s30, when a CO2 adsorption layer is isolated to generate cracks, a large amount of adsorbed CO2 escapes, when the CO2 passes through a spraying layer, the escaped CO2 accelerates the hydrolysis of Li2CO3 into LiHCO3 and forms diffusion around the LiHCO3, the concentration of Li and the concentration of CO2 in a liquid-phase environment are increased at the same time, and elements such as N, P and K of a Li salt culture medium in a low-lithium salt state are supplemented; the method has the advantages of simplicity and convenience in operation, low cost, environmental protection and high efficiency, and solves the problem of isolation weakening or failure caused by pile aging or geological activity in the underground CO2 adsorption and storage process.

The utility model discloses a motor position sensor structure with high sealing performance, which comprises a sensor shell, a connector is arranged at the lower end of the sensor shell, a grounding wire is embedded in the sensor shell, the lower end of the grounding wire is connected into the connector, the upper end of the grounding wire is connected with a metal embedded ring, and the metal embedded ring is connected with a metal wire. A PCB cavity is formed in the sensor shell, a resin sealing groove is formed in the lower portion of the sensor shell, an end cover is installed at the rear end of the resin sealing groove, and the front end of the resin sealing groove is filled with sealing resin; according to the utility model, the structure design is reasonable, the problem of product failure caused by unreliable sealing due to the fact that only the ground wire is added is solved, and the EMC performance requirements of customers under special conditions can be met.

The utility model relates to the technical field of sealing structure discloses a sealing structure of high -speed magnetic suspension permanent -magnet motor, including motor casing, seal ring, and motor casing includes end cover, and the end cover includes the first cooperation hole for making motor output shaft to penetrate its own, wherein, the gland is equipped with on the end cover, and the gland is detachably connected with the end cover, and the seal ring is located between the end cover and the gland, and the gland is equipped with the second cooperation hole for with the first cooperation hole intercoordination. Through the above technical scheme, the problem that the sealing ring (carbon ring) is replaced in the prior art and is easy to cause the sealing ring between the motor end cover and the motor casing to fall off is solved.

The invention provides a liquefied petroleum gas cylinder tracking integrated system and method, relates to the technical field of gas cylinder management, and aims to solve the problems that in the existing gas cylinder tracking technology, only a single link of gas cylinder tracking is considered, the gas cylinder tracking process is incomplete, a bar code, a two-dimensional code and the like are easy to pollute and damage at the same time, so that information reading fails, and the gas cylinder tracking efficiency is low. And gas cylinder tracking cannot be realized. The system comprises an NFC label used for writing liquefied petroleum gas cylinder specification archive data, a cloud server used for storing the gas cylinder archive data and gas cylinder operation log data, and an NFC reading terminal used for identifying the gas cylinder data in the NFC label, binding operation information of an operator in the tracking process with the gas cylinder data in the NFC label and uploading the information to the cloud server. Through cooperation of the NFC label, the NFC reading terminal, the cloud server and the traceability platform, tracking of the whole process of activation, filling, distribution and the like of the gas cylinder is achieved, and the problem that information reading fails due to pollution and damage of bar codes and the like is solved.

The invention discloses a PPT working medium supply device and method. The device comprises a thrust chamber frame shell, a cathode plate, an anode plate, a first working medium and a second working medium, and a thrust outlet is formed in one end of the thrust chamber frame shell; the cathode plate and the anode plate are arranged on the inner wall of the thrust outlet; a first bulge and a second bulge are respectively arranged on the cathode plate and the anode plate; the first working medium and the second working medium are arranged in the thrust chamber frame shell side by side, meshed with each other and capable of sliding independently. The first end of the first working medium abuts against the first protrusion, and a first pulling piece is arranged between the negative plate and the second end of the first working medium. The first end of the second working medium abuts against the second protrusion, and a second pulling piece is arranged between the anode plate and the second end of the second working medium. The thruster is applied to the field of spacecraft propulsion, can effectively solve the problem of thruster failure caused by inconsistent ablation speeds of working media on the two sides of the cathode plate and the anode plate, and can effectively prevent carbon deposition on the end face of the working media on one side from affecting propulsion supply of the working media on the other side.