57 results about "Micropower" patented technology

The invention discloses a thermistor mounting method and related equipment. The thermistor mounting method comprises the following steps: applying micro-power alternating bias excitation to a thermistor to obtain cold-state thermal resistance reference data; mounting a thermistor on the surface of the solder paste, collecting real-time resistance data in a temperature rise process, and performing normalized difference according to cold-state thermal resistance reference data to obtain a normalized dynamic resistance curve; performing derivative continuity and extreme value distribution analysis on the curve to obtain a wetting connectivity index; when the wetting connectivity index reaches a preset threshold value, executing second-order extreme value spacing analysis to obtain interface heat flux density distribution, calculating an interface thermal resistance dispersion vector field, and adjusting the transmission chain speed and furnace chamber airflow parameters according to the interface thermal resistance dispersion vector field; and a backtracking dynamic resistance curve is obtained in the cooling process, and the backtracking dynamic resistance curve and the standardized dynamic resistance curve are differentiated to obtain a curing quality factor. According to the invention, real-time identification in a defect germination stage and instant correction in a solder solidification window stage in a thermistor mounting process can be realized, and the mounting quality and reliability are improved.

A constant micro power energy system (CMPES) device to harness sustainable energy sources and generate power including a main body structure having a base plate, a frame extending from the base plate, and a top plate positioned at the top of the frame. The CMPES device includes a flask barrel positioned in the frame and motors positioned on the top plate. The CMPES device includes a ring gear connecting the flask barrel and a motor shaft of the motor. The CMPES device includes disc generators positioned inside the flask barrel. The motors supply power to drive the flask barrel to rotate constantly at a predetermined speed in order to generate continuous and simultaneous Alternating Current (AC) and Direct Current (DC) electrical power output. The motors facilitate direct transmission to the disc generators in order to provide the electrical power output to panel systems connected to the CMPES device.

The utility model provides a distribution line fault positioning device, which relates to the field of fault positioning and comprises a plurality of data acquisition units, a data collection module and an intelligent fusion terminal. The data collection module is in wireless communication connection with each data acquisition unit through micropower, and the data collection module is connected with the intelligent fusion terminal through a serial port; the data acquisition unit comprises a first data acquisition module, a second data acquisition module and a third data acquisition module; the first data acquisition module, the second data acquisition module and the third data acquisition module are all in wireless communication connection with the data collection module through micropower. According to the utility model, each data acquisition module can be self-powered and complete various detection functions, data of the data acquisition modules are gathered to the data collection module for unified collection and processing, large-area electric wire fault monitoring can be realized, and the electric wire monitoring efficiency is improved.

The invention discloses an intelligent cement-soil mixing pile machine, which relates to the technical field of building equipment and comprises a pile machine intelligent edge terminal, an intelligent slurrying station subsystem and a cloud platform management subsystem, the pile machine intelligent edge terminal is integrated on a cement-soil mixing pile machine; the intelligent slurrying station subsystem is located on a construction site; the cloud platform management subsystem is deployed in a remote server; data connection is established between the pile machine intelligent edge terminal and the intelligent pulping station subsystem through a first wireless communication network, and the first wireless communication network is a LoRa long-distance radio micropower wireless network; data connection is established between the pile machine intelligent edge terminal and the cloud platform management subsystem through a second wireless communication network. According to the invention, the crossing from a'fixed formula 'to a'dynamic formula' is realized, the quality uniformity and reliability of the pile body are ensured, the ineffective operation is reduced through optimal control, and the cost of materials such as cement and the like can be obviously saved.

The invention relates to the field of power grids, and discloses a power line topology identification method of a dual-mode communication integrated Bluetooth technology, which comprises the following steps: a communication main node CCO and a communication sub node STA are electrified and initialized, a high-speed power line carrier and micropower wireless hybrid communication network is automatically established, and a dual-mode communication link is established; the CCO collects power failure event information recorded by each STA through the link, screens out a power failure STA node set in the same time window based on a timestamp matching algorithm, and generates a preliminary electrical topological relation; each node Bluetooth module periodically broadcasts and records RSSI values, and after CCO summarizing, STA nodes are spatially grouped through a density clustering algorithm; the physical distance between the key node pairs is further obtained, and physical position grouping is optimized; and finally, the CCO fuses the electrical topology and the physical position information, and generates a complete power line topological graph by using a graph theory algorithm. According to the method, effective identification of the topological structure of the low-voltage distribution area is realized, and electrical and spatial dual-dimension information is provided.

The present invention discloses a multi-output crystalline silicon solar cell structure, comprising a plurality of structural units arranged side by side on a substrate. Each structural unit comprises a multi-layer power generation structure composed of a plurality of independent low-power power generation units stacked together. Adjacent low-power power generation units are insulated from each other by an insulating layer. The width of the multiple low-power power generation units and the insulating layer gradually decreases from bottom to top, so that the cross-section of each structural unit is an isosceles trapezoid with a narrow top and a wide bottom. Each low-power power generation unit is provided with a set of output ports. A focusing baffle is provided between adjacent structural units. The focusing baffle is composed of a plano-convex lens area, a buffer area, and a support area, from top to bottom. The focusing baffle is embedded between adjacent structural units through the support area, and is used to focus incident light between the two adjacent structural units for multiple reflection. The battery is easy to use and can provide electricity for small and micro-power applications without cutting the battery chip.

The utility model relates to a micropower pickup circuit, which comprises a self-excitation booster circuit, a voltage stabilization booster circuit, an energy storage circuit, a discharge drive circuit and a single chip microcomputer chip, the self-excitation booster circuit is connected with an input voltage, and an output end of the self-excitation booster circuit is connected with an input end of the voltage stabilization booster circuit. The output end of the voltage stabilizing and boosting circuit is connected with the input end of the energy storage circuit, the output end of the energy storage circuit is connected with the input end of the discharging driving circuit, the single-chip microcomputer chip is connected with the output end of the discharging driving circuit, and the single-chip microcomputer chip is connected with the energy storage circuit and monitors the output voltage of the energy storage circuit. And if the output voltage of the energy storage circuit is greater than or equal to the preset voltage, the single-chip microcomputer chip acquires a signal value and performs signal transmission. According to the technical scheme, extremely-low-power pickup is effectively achieved, pickup and sending of multiple signals in the physical world can be achieved through self-adjustment of a single-chip microcomputer software system under the condition that human intervention is not needed, and therefore the application range of the Internet of Things world is widened.

The application belongs to the field of electric power, and particularly relates to a micro-power wireless communication system and method applied to a power distribution network. The system comprises a multi-mode radio frequency processor circuit, a radio frequency power amplification circuit, a radio frequency matching circuit, a power management circuit, a mode management module and an antenna end. The multi-mode radio frequency processor circuit, the radio frequency power amplification circuit and the radio frequency matching circuit are sequentially connected. The multi-mode radio frequency processor circuit is further connected with the power management circuit and the mode management module respectively. The other end of the radio frequency matching circuit is connected with the antenna end. The wireless sensing can be widely applied in the field of power grid under the condition of low power consumption.

1. The name of the design product: micro power repeater. 2. The use of the design product: for network optimization and enhance mobile phone signal. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a micropower-oriented high-efficiency dual-frequency omnidirectional circularly polarized radio frequency rectification antenna. The antenna comprises a receiving antenna unit and a dual-frequency rectification circuit unit which are connected with each other. The receiving antenna adopts a dual-frequency omnidirectional circular polarization design; the double-frequency rectification circuit comprises a diode branch and a load branch which are connected in parallel. The diode branch comprises a coupling microstrip line, a pilot frequency impedance conversion network and a dual-frequency harmonic suppression structure which are connected in sequence; the load branch is formed by connecting a straight-through filter with a load in series. The double-frequency harmonic suppression structure forms a band-stop characteristic at the secondary harmonic of the double working frequency points; the pilot frequency impedance conversion network realizes a double-frequency-point same-input impedance characteristic; the coupling microstrip line enhances the voltage amplitude of the diode so as to improve the rectification efficiency of the circuit under the condition of micro input power. The antenna has good omnidirectivity and circular polarization performance, and can collect dual-frequency, multi-direction and multi-polarization electromagnetic waves; and meanwhile, the rectifier has the advantages of high rectification efficiency, small size and compact structure under a micro-input power condition, and better meets the requirement of collecting weak radio frequency energy in an actual scene.

The invention discloses an unmanned aerial vehicle expelling method based on micro-power interference optimization in an urban environment, and the method achieves the precise recognition of an unmanned aerial vehicle target through a multi-mode detection means, completes the legality judgment through combining with a radio frequency fingerprint comparison white list, can effectively avoid the wrong expelling of an unmanned aerial vehicle which normally executes a task, and improves the accuracy of the unmanned aerial vehicle. Therefore, the problem of lack of distinguishing capability in the prior art is solved; meanwhile, an electromagnetic coexistence constraint set is dynamically generated before interference, public systems such as cellular communication, a wireless local area network and emergency communication are protected, null is formed in the direction of a base station, it is ensured that interference signals cannot be leaked out to affect urban public communication, and the defect that traditional high-power interference is prone to generating incidental damage to peripheral systems is overcome; in the expelling execution process, according to the method, frequency points, power, duration and beam parameters are determined through micro-power interference optimization, and targeted expelling of illegal unmanned aerial vehicles is achieved through directional emission of phased-array antennas and calling of a micro-power waveform library.

The utility model discloses a micropower DCDC converter, which comprises a transformer, the transformer comprises a magnetic core and two windings, the magnetic core is of a square ring structure and is integrally formed by ferrite materials, and four side columns are formed on the magnetic core; and the two windings are respectively wound on the two side columns of the magnetic core to form non-crossed and overlapped layout positioning of the two windings. Compared with the prior art, according to the scheme, the utilization rate of the window area of the magnetic core can be improved, the overall size of a high-isolation product can be reduced, the consistency of isolation voltage resistance, isolation capacitance and leakage inductance can be better, and the magnetic core is suitable for mechanical winding of a large-wire-diameter winding and particularly suitable for a micro-power product with the high isolation voltage resistance requirement.

The invention is applicable to the technical field of head-mounted Internet of Things intelligent mobile terminals, and provides an optimization method and a network system of a head-mounted battery pack, comprising a mobile power supply mounted on one (top) or multiple (top) cap bodies, and digital displays of a rechargeable battery, a power generation device, stored electric quantity, residual used electric quantity and the like on the mobile power supply of the cap bodies. The electric quantity relates to intelligent real-time matching of current, voltage and power related to a control switch, a rechargeable battery, power generation equipment, a microcomputer main control board, a wireless communicator, a display screen, an identity recognizer, a temperature detector, a human brain detection sheet sensor, a camera, a night vision device, an illuminator, earplugs, a pickup arm, other hardware equipment and the like; the invention discloses a six-phase battery pack optimized power supply system capable of automatically distributing and metering. According to the six-phase battery pack, micro-current, micro-voltage and micro-power of a human brain detection sheet serve as a minimum standard battery unit, and two or more battery units are combined and optimized in two modes of increasing voltage in series and increasing current in parallel to form a network system. Therefore, the electric power requirements of the head-mounted Internet of Things intelligent mobile terminal and other hardware equipment can be met. Through the optimized network system, a user can solve the power utilization problem of the head-mounted Internet of Things intelligent mobile terminal and master the power utilization condition at any time. A user can freely select the charging period according to the actual situation, the mode that an existing MR head-mounted display is charged once a day generally is improved to the mode that the existing MR head-mounted display is charged once a week generally, the mode that the existing MR head-mounted display is charged once a month generally, the mode that the existing MR head-mounted display is charged once a year generally, the mode that the existing MR head-mounted display is charged once a year generally and the mode that the existing MR head-mounted display is charged once a year generally are improved, and the charging time can be customized. According to the utility model, the problems of difficult charging, many charging times, uncontrollable charging and the like of the existing MR head-mounted display are solved, long-term power support is provided for the Internet of Things intelligent terminal of the Internet of Things in the future, the charging time of a user is saved, and the use efficiency of the user is improved. Therefore, transformation of everything digitization can be accelerated, and rapid development of artificial intelligence and the Internet of Things is promoted.

The invention provides a broadband carrier and micropower wireless dual-mode communication data acquisition method and device, and relates to the technical field of electric power communication. The method comprises the following steps: issuing acquisition task configuration information to a first dual-mode communication module; the first dual-mode communication module is controlled to distribute the data items and the collection periods to the second dual-mode communication modules according to the task numbers, and the second dual-mode communication modules are controlled to obtain the collected power data; in the acquisition period, controlling the first dual-mode communication module to send a freezing data request message to each second dual-mode communication module, controlling each second dual-mode communication module to package the power data into a freezing data response message according to the freezing data request message, and sending the freezing data response message to the first dual-mode communication module; controlling the first dual-mode communication module to convert the frozen data response message into a report message; and a report message sent by the first dual-mode communication module is received, the report message is analyzed to obtain the electric power data, and minute-level data acquisition can be realized.

The invention relates to the technical field of micro-power-consumption energy collection, in particular to a micro-power-consumption energy collection circuit integrating the functions of micro-power-consumption energy collection and storage, micro-power-consumption output control and output voltage stabilization control. According to the circuit, high-precision and low-power-consumption energy collection and control elements are adopted, and it is ensured that high energy collection efficiency can still be obtained in the extremely-low-power-consumption operation state. Meanwhile, all the units work cooperatively, and concentrated collection and effective utilization of micro-power energy are achieved. The circuit can be widely applied to various internet-of-things terminal devices and the like, can be matched with a low-power photovoltaic panel, a piezoelectric power generation piece, a small-size wind driven generator, temperature difference power generation equipment, a nuclear battery and the like to collect weak energy, can intermittently and centrally release voltage-stabilized high power, and can provide powerful technical support for internet-of-things application scenes.

The invention provides a power network topology identification method and system based on an intelligent fusion terminal, and the technical scheme adopted by the invention is as follows: constructing an orthogonal spreading code sequence and distributing the orthogonal spreading code sequence to each end node, and utilizing a power line power frequency zero crossing point as a whole network physical synchronization reference; controlling all end nodes to simultaneously perform parallel physical modulation of micropower; at a fusion terminal side, carrying out differential preprocessing on the collected superposed and synthesized waveform data, carrying out iterative de-spreading by using a serial interference elimination algorithm based on in-situ waveform template learning, and analyzing the signal intensity of each node; and finally, determining the physical topology affiliation in combination with multi-port competition judgment logic. According to the invention, the technical problems of low topology identification efficiency and low identification accuracy in strong background noise and signal crosstalk environments can be solved.

The invention discloses an electromagnetic generator for ultralow-frequency vibration energy conversion and a working method, and belongs to the technical field of vibration energy collection and micro-power generation, the electromagnetic generator comprises a base, an electromagnetic induction assembly, an inner rotor, a transmission device and an upper cover, a hole is formed in the center of the electromagnetic induction assembly, and the inner rotor is arranged in the hole; the electromagnetic induction assembly comprises an outer rotor and a stator, the outer rotor and the stator are oppositely arranged up and down, a magnet is arranged on the outer rotor, and a coil is arranged on the stator; the base is connected with the bottom of the inner rotor through a thrust bearing, the middle of the inner rotor is connected with the upper cover through a linear bearing, the top of the inner rotor is connected with the upper cover through a transmission device, and the inner rotor is further connected with the outer rotor through a one-way bearing. The base is further connected with an upper cover through a linear bearing, and a spring is arranged between the upper cover and the linear bearing. The ultra-low-frequency vibration energy in the environment can be collected, and compared with a traditional electromagnetic energy harvester, the energy harvesting efficiency is higher.

The present invention provides a micro-power energy harvesting device, system and method based on DC corona ion flow, including a connection conductor connected to a high-potential device, an energy harvesting box connected to the connection conductor, and a corona electrode connected to the energy harvesting box. Among them, the high-potential device is a DC transmission line, and the energy harvesting box includes a filtering module, a control and auxiliary module, and an energy harvesting module; the micro-power energy harvesting device is connected to the DC transmission line by the connection conductor, harvests energy through the DC corona ion flow released by the corona electrode, and uses the energy harvesting box to reduce the electromagnetic interference generated by corona pulses to protect the backend sensing and data transmission devices. The present invention solves the problem that it is difficult for wireless sensors to harvest energy in a DC constant field by utilizing the ion flow generated by the corona loss of high-voltage DC transmission lines, and has the advantages of small volume, flexible placement, stable output, etc., and has strong application prospects.

The invention provides an elevator type micropower repeater and a signal coverage method thereof, which can improve the quality of wireless communication in an elevator and solve the problems of signal attenuation and interruption caused by movement of the elevator in the prior art, and a frequency conversion module of a main control unit converts a signal of a first frequency band from a macro station into a second frequency band, so that the signal coverage efficiency is improved. The signal of the second frequency band is received by a receiving antenna of the car unit, the frequency conversion module converts the signal of the second frequency band received by the receiving antenna back to the first frequency band and sends the signal of the first frequency band by the sending antenna, and the signal of the first frequency band can be received by the terminal; the frequency conversion module of the lift car unit converts the signal of the first frequency band received by the receiving antenna into a second frequency band and sends the signal through the sending antenna, the receiving antenna of the main control unit receives the signal of the second frequency band, and the frequency conversion module of the main control unit converts the signal of the second frequency band received by the receiving antenna back to the first frequency band; and the signal of the first frequency band can be received by the macro station.

The present invention discloses a method for improving the crosstalk between HPLC and micro-power wireless dual-mode communication stations, comprising: S1. After the node of the user terminal device is powered on, the signal acquisition time windows of the two communication modes are aligned; S2. The acquired dual-mode signal parameters are combined with the preset station topology database to generate a feature vector of multi-dimensional features; S3. A training and generation random forest model is performed, the feature vector of the multi-dimensional features is input, the station attribution weight value is dynamically calculated, and the feature vector is nonlinearly weighted; S4. Based on weight comparison and station boundary node processing, the station attribution weight value is combined with a preset impedance shielding compensation algorithm to correct the measurement error, generate a unique station identification and lock the networking relationship, and perform station attribution determination. While retaining the wide coverage advantage of HPLC, the present invention utilizes the spatial attenuation characteristics of wireless communication to achieve accurate identification of station boundaries, which can improve the instant installation and acquisition stability of the user terminal device.

The application discloses a kind of urban environment under the method for driving away unmanned aerial vehicle based on micro-power interference optimization, and the legality is determined by combining radio frequency fingerprint comparison white list, can effectively avoid the unmanned aerial vehicle of normal execution task to generate misdriving, to solve the problem of lack of distinguishing ability in prior art;Meanwhile, before interference, dynamically generate electromagnetic coexistence constraint set, protect public systems such as cellular communication, wireless local area network and emergency communication, and form null in the direction of base station, ensure that interference signal will not be leaked to affect urban public communication, overcome the deficiency that traditional high-power interference is easy to produce collateral damage to surrounding system;In the process of driving away execution, the present method determines frequency, power, time length and beam parameter by micro-power interference optimization, and uses phased array antenna directional transmission and the call of micro-power waveform library, realizes the targeted driving away of illegal unmanned aerial vehicle.

Sensor (10) with: a circuit generating a magnetic field signal (20); and a control circuit (52) coupled to the magnetic field signal generating circuit (20) and responding to an externally generated trigger signal (54) to trigger the generation of a supply current pulse (80), wherein the supply current pulse (80) activates the magnetic field signal generating circuit (20) for a predetermined time interval; a sensor input (50) configured to receive a pulsed signal generated by an external trigger signal generator as the externally generated trigger signal (54); and wherein The predetermined time interval is determined by the control circuit.

A device includes a circuit that generates a first current associated with a voltage of a region of a semiconductor substrate, a second current associated with a temperature of the region, a third current associated with a first process parameter of the region, and a fourth current associated with a second process parameter of the region. A multiplexer of the device receives the first, second, third, and fourth currents and selects the currents one by one and periodically. A ring oscillator of the device is coupled to the multiplexer and receives the first, second, third, and fourth currents one by one and periodically, from the multiplexer. The ring oscillator oscillates at oscillation frequencies that are based on the received current from the multiplexer. The voltage, temperature, and the first and second process parameters of the region are determined based on the oscillation frequencies.

The application relates to a micro-power wireless hybrid routing networking method based on AI decision, which comprises the following steps: step S1, gateway beacon frame flooding issuing and node repeated packet discrimination; step S2, neighbor table collection and node state recording; step S3, AI-assisted path generation; step S4, fixed routing path registration and distribution; step S5, hybrid forwarding mechanism; step S6, AI-assisted path switching decision; and step S7, low power consumption and self-adaptive adjustment. The technical problems of the existing full flooding algorithm, such as serious broadcast storm, high node energy consumption, path redundancy, path failure in a dynamic environment, high maintenance cost and lack of intelligent switching, are solved.

This invention discloses an electromagnetic generator and its operating method for converting ultra-low frequency vibration energy, belonging to the field of vibration energy harvesting and micro-power generation technology. It includes a base, an electromagnetic induction component, an inner rotor, a transmission device, and a top cover. The electromagnetic induction component has a central hole, within which the inner rotor is housed. The electromagnetic induction component includes an outer rotor and a stator, arranged vertically opposite each other. The outer rotor has a magnet, and the stator has a coil. The base is connected to the bottom of the inner rotor via a thrust bearing, the middle of the inner rotor is connected to the top cover via a linear bearing, and the top of the inner rotor is connected to the top cover via the transmission device. The inner rotor is also connected to the outer rotor via a one-way bearing. The base is also connected to the top cover via a linear bearing, and a spring is provided between the top cover and the linear bearing. This invention can harvest ultra-low frequency vibration energy from the environment, achieving higher energy harvesting efficiency compared to traditional electromagnetic energy harvesters.

The present application provides a single-cell battery inverter boost control circuit, method and device. The control circuit includes a single-cell battery, a high-frequency voltage modulation unit, a micro-power boost circuit, a drive unit and a micro-control unit. The single-cell battery is connected to the high-frequency voltage modulation unit through a first circuit, and the single-cell battery is connected to the micro-power boost circuit through a second circuit. The drive unit and the micro-control unit are connected to the output end of the micro-power boost circuit. The micro-power boost circuit boosts the voltage of the single-cell battery to a first preset voltage value, supplies power to the drive unit, and reduces the voltage to a second preset voltage value, and supplies power to the micro-control unit. The micro-power boost circuit achieves flexible voltage conversion without the need for additional complex voltage regulation equipment, and can effectively boost the relatively low voltage of the single-cell battery to a higher voltage that meets the load requirements. It can dynamically adjust the working state according to load changes, ensure efficient and stable voltage output, and improve the efficiency of power conversion.

This invention relates to the field of power grids and discloses a power line topology identification method integrating dual-mode communication and Bluetooth technology. The method includes the following steps: The communication master node (CCO) and communication sub-nodes (STAs) are powered on and initialized, automatically forming a high-speed power line carrier and low-power wireless hybrid communication network, establishing a dual-mode communication link; the CCO collects outage event information recorded by each STA through this link, and filters out the set of STA nodes that experienced outages within the same time window based on a timestamp matching algorithm, generating a preliminary electrical topology relationship; each node's Bluetooth module periodically broadcasts and records RSSI values, which the CCO then aggregates and spatially groups the STA nodes using a density clustering algorithm; further, the physical distance between key node pairs is obtained, optimizing the physical location grouping; finally, the CCO integrates electrical topology and physical location information and uses a graph theory algorithm to generate a complete power line topology map; this method achieves effective identification of the topology structure of low-voltage distribution substations, possessing both electrical and spatial dimensions of information.

The invention discloses a fault early warning method, device and equipment for a power distribution system and a storage medium, is applied to an integrated monitoring device, and relates to the technical field of electric power, and the method comprises the steps: determining a target real environment temperature based on the chip working current and load parameters of the integrated monitoring device through employing a target thermal metabolism model; performing multi-dimensional feature extraction on circuit information of a power distribution loop in the power distribution system to obtain a load behavior fingerprint, obtaining a preset load feature template issued by the cloud platform, and determining a target load feature based on a matching result of the load behavior fingerprint and the preset load feature template; determining micro-power flow characteristics by using a preset impedance harmonic model based on the output variation and the power flow direction of the distributed power supply accessed to the power distribution system; and determining a fault early warning result based on the target real environment temperature, the target load characteristics and the micro-power flow characteristics by using a preset fault evaluation model. Deviation of fault prediction of the power distribution system caused by self heating of the monitoring device is avoided.

The utility model discloses a kind of micro-power wireless charging system and electronic equipment based on the system, wherein, micro-power wireless charging system, including transmitter and receiver, the transmitter includes main control module, drive module and transmitting coil module, the main control module is used to output fixed frequency square wave signal to drive module, the drive module is connected the transmitting coil module to form LC resonant circuit;The receiver includes receiving coil, rectifier module and battery, the rectifier module input end is connected the receiving coil, output end connects the battery anode, for the AC electric energy conversion is direct current and charges battery;Wherein, when the receiver is not coupled, LC resonant circuit is in high impedance state, when the receiver is coupled, load effect causes the LC resonant circuit impedance reduces and waveform distortion, the main control module is based on impedance conversion signal to start close power output.The utility model technical scheme aims at low-cost automatic identification micro-power wireless charging.