395 results about "Electronic load" patented technology

The invention relates to the technical field of power electronic equipment testing, and discloses a special intelligent testing device and method for a power UPS, and the device comprises a multi-source power supply system which comprises a three-phase program-controlled variable-frequency power supply, a single-phase program-controlled variable-frequency power supply and a DC program-controlled power supply, the output voltage of the three-phase program-controlled variable-frequency power supply is 0-480V and is adjustable, and the output voltage of the single-phase program-controlled variable-frequency power supply is 0-480V; the output voltage of the single-phase programmable variable-frequency power supply is 0-280V and the frequency of the single-phase programmable variable-frequency power supply is 45-64Hz and adjustable; the output voltage of the direct-current programmable power supply is 50-1000V and adjustable; an electronic load system; a signal acquisition system; an embedded control system; and an upper computer software system. A three-phase program-controlled variable-frequency power supply, a single-phase program-controlled variable-frequency power supply and a direct-current program-controlled power supply are integrated to form a multi-source power supply system, a resistive and rectifying dual-mode electronic load is combined, millisecond-level synchronous switching of a voltage level and a load state is realized through an embedded control system, a closed-loop test capability of multi-dimensional performance of the power UPS is formed, and the test efficiency is improved.

The invention provides an electronic load circuit fault diagnosis method based on a multi-channel graph attention network. Each vibration sensor signal is averagely segmented into a plurality of time slices, frequency domain information of each slice signal is used as a graph node, edge connection is carried out according to feature similarity weight coefficients between the graph nodes, each vibration sensor signal forms a sub-graph, and thus a multi-sub-graph structure is established; performing information aggregation updating on each sub-graph node by adopting a graph attention mechanism network; splicing and fusing the updated slice nodes at the same time from different sub-graphs by adopting an end-to-end connection mode to form a fusion graph, and training edge connection weights among the nodes of the fusion graph by adopting an edge weight learning mechanism and a multi-channel attention mechanism; and inputting the attention mechanism aggregation characteristics of the fusion image into a meta-learning model to carry out electronic load circuit abnormity diagnosis. According to the fault diagnosis method based on the multi-channel graph attention network, fault detection on components in an electronic load circuit is realized.

The invention discloses a multi-mode perovskite and laminated cell comprehensive test system and method. The system comprises a darkroom, a test platform, an LED light source module, a CCD camera, a laser, an adjustable constant current source, an electronic load and an upper computer. The darkroom is used for shielding external ambient light and providing a dark test environment; the test platform is installed in the darkroom, and a to-be-tested battery is placed on the test platform; the LED light source module is used for providing a test light source; the CCD camera is used for capturing an optical signal generated by the battery to be tested in the testing process; the laser is used for emitting a laser beam to excite the to-be-detected battery to generate a specific optical response; the adjustable constant current source and the electronic load module can be electrically connected with a to-be-tested battery on the test platform, the adjustable constant current source is used for supplying current to the to-be-tested battery, and the electronic load module is used for simulating different load conditions; and the upper computer is used for realizing intelligent control of the test process and processing and display of test data.

The invention discloses a POL power supply automatic test method based on modular design, and belongs to the technical field of power supply test. The method comprises the following steps: firstly, under the control of an upper computer, automatically reading POL power supply basic parameters including key characteristic parameters such as input / output voltage, rated current and frequency from a preset Excel table, and establishing a judgment reference for testing; then, instrument initialization is completed, communication connection with test equipment such as an oscilloscope, an electronic load and a direct-current power supply is established, and configuration of initialization function parameters is completed; then, executing a measurement task of each core parameter of the POL power supply to be tested, and in the test process, executing a parallel measurement management mechanism, namely configuring each instrument parameter and channel state in real time according to a specific test item, and triggering a retry or interrupt logic under the conditions of communication abnormality, data timeout and the like until the test recovers a running state; and finally, after the test is completed, performing Excel storage and interaction on the standardized test data and the waveform screenshot, and finally safely exiting. According to the POL power supply automatic test method based on the modular design, the whole test process is divided into a plurality of serial or parallel function processing units such as parameter reading, instrument initialization, test execution and test management, data storage and interaction and the like, and high efficiency and usability of a test system are achieved.

A DC electronic load circuit relates to the technical field of electronic load control. The utility model provides a direct current electronic load circuit which integrates a dissipation MOS tube array, an analog PID loop, a digital integrated control module, a bus electrical parameter sampling and processing module and a WiFi communication module, and realizes a plurality of working modes such as constant current, constant voltage, constant resistance and constant power by accurately controlling the conduction degree of the MOS tube array. The system has the advantages of real-time monitoring, remote control, overvoltage and overcurrent protection, low power consumption design and the like, and an electronic load solution which is high in precision, high in stability and flexible to operate is provided, so that diversified test requirements are met, and the power supply test efficiency and safety are improved.

The invention provides an electronic load dynamic slope control circuit and method, and relates to the technical field of integrated circuit design. The reference generation circuit receives and stores different current reference values and provides basic data support for the system. The slope generation circuit accurately adjusts and controls the current according to a set slope, cooperates with the comparison / selection circuit, provides an accurate current control basis for the MOS control circuit according to a working mode determined by a pulse width modulation signal generated by the PWM generation circuit, and further accurately controls the actual current. The waveform parameter of the pulse width modulation signal is adjusted by the programmable characteristic of the PWM generation circuit, and the time point and duration of current loading are controlled. Meanwhile, by introducing a time sequence control mechanism, when current values are switched in different working modes, accurate control over the slope is achieved, the defect that the current is unstable due to the fact that effective time sequence coordination is lacked when the current set value is frequently and rapidly changed in the prior art is overcome, and the safety and reliability of current control are improved.

The invention relates to the technical field of electronic measurement, in particular to a multifunctional comprehensive test method and system for a direct-current power supply, and the method comprises the steps: initializing a test; a static performance test step; a dynamic performance test step: driving a direct-current electronic load module to execute a time sequence instruction sequence in the dynamic load test file, and acquiring an output voltage and an output current waveform through a high-speed data acquisition module in the execution process; a ripple noise test step: switching the high-speed data acquisition module to an alternating current coupling mode and acquiring a high-frequency noise waveform in a constant load current section in the time sequence instruction sequence; a correlation analysis step; and a test termination step: controlling the load to return to zero and closing the tested DC power supply. Through automatic configuration and test execution of the system, the complexity of manual operation is reduced, and the test efficiency is improved. And especially in a high-frequency test scene, the test time is remarkably saved through automatic execution.

The invention discloses a server power supply board testing method and system, electronic equipment and a storage medium, and relates to the technical field of server power supply board testing, and the method comprises the steps: inputting a testing power supply signal to a server power supply board, and verifying the triggering accuracy of overvoltage protection and undervoltage protection functions of the server power supply board; after a preset power supply signal is converted by a solid-state relay, voltage loading and detection are carried out on a power supply input interface one by one channel, and after it is verified that a power supply protection function and an input interface state are normal, multi-type load fluctuation and communication protocol interaction requirements of a server are dynamically reproduced through a function analog signal. The output stability and protocol compatibility of the server power supply board are evaluated by combining an electronic load dynamic discharge test with a digital signal collaborative feedback mechanism, so that the technical problems of relatively low test efficiency and relatively high test cost of the server power supply board in related technologies are solved, and the purposes of reducing the test cost, improving the test efficiency and improving the test efficiency are achieved. And the test coverage rate is increased.

The invention relates to the field of power supply testing, in particular to a power supply aging test system which comprises a power supply aging test system and a power supply aging test method. The system comprises an industrial control computer, an aging rack, an energy recovery module, an electronic load module and a closed test cabin, the industrial control computer controls aging test parameters and data acquisition, the multi-channel electronic load module is arranged in the aging rack, the energy recovery module converts electric energy into energy which can be stored or fed back to a power grid, and the closed test cabin is integrated with a temperature and humidity control unit. The test method comprises the steps of connecting a to-be-tested power supply to equipment, setting related parameters, starting a test, monitoring data, performing anomaly detection, generating a test report and the like. The technical effects of multi-channel synchronous test, energy recovery, accurate temperature and humidity control, accurate anomaly detection, detailed test report generation, remote monitoring support and the like are achieved.

The invention discloses a parallel electronic load current control method and device and electronic equipment. The method comprises the following steps: acquiring a target current value; based on the target current value, controlling the feedback type electronic load to output at a first output current; based on the target current value and the first output current, controlling the consumable electronic load to output with a second output current; under the condition that the output current of the electronic load system is the target current value, the consumption type electronic load is controlled to output with a third output current, so that the output current of the electronic load system is kept at the target current value until the output current of the feedback type electronic load reaches the target current value; and in response to the output ending instruction, controlling the feedback electronic load to output with a fourth output current until the output current of the feedback electronic load returns to the steady-state working current, and controlling the current compensation unit to output a reverse compensation current, so that the output current of the electronic load system is consistent with the current preset output curve.

The invention relates to an automatic power supply test system and method. The automatic power supply test system comprises a programmable AC power supply module, an electrical performance acquisition module, a control module and a plurality of electronic load modules. The power output end of the programmable AC power supply module is connected with the power input end of a to-be-tested DC power supply, and the signal input end of the programmable AC power supply module is connected with the signal output end of the control module. The power output end of the to-be-tested DC power supply is connected with the signal input end of the electrical performance acquisition module, and is dynamically connected with the power input ends of the plurality of electronic load modules. The control module is used for determining a corresponding test mode, and generating a corresponding programmable power supply control signal and a dynamic connection control signal according to the test mode so as to simulate different power supply working conditions and realize load test processes under different load conditions. The testing device can adapt to various power supply and load working conditions, and solves the problems of dispersed functions and bloated structure of the existing testing device.

The invention discloses an automatic test system of a power driving chip, and particularly relates to the technical field of automatic test, which comprises a dynamic test control module, a multi-level parallel test module, an abnormal power detection module and a safety verification diagnosis module. Based on cooperative work of a programmable electronic load and a digital signal processor, the dynamic response capability of a chip under different working conditions is verified, abnormal power data under an extreme load condition is generated, electrical parameters and thermal parameters of the chip are synchronously collected, the relevance between abnormal power performance and temperature is analyzed, and the abnormal power performance is analyzed. Temperature rise differences caused by power-off protection and electric leakage are distinguished, abnormal power waveforms are extracted and classified so as to distinguish power-off protection and electric leakage events, the influence degree of environmental charge interference is quantified, finally, response effectiveness of a chip protection circuit in a strong charge environment caused by electric leakage is simulated, and calibration is performed according to a collected correction value. Therefore, the automation degree of the system is improved, and the test robustness is enhanced.

The invention discloses an electrolytic bath performance test system, which comprises an electrolytic bath, an electronic load, a direct current power supply, a first contactor, a second contactor, a third contactor, a fourth contactor, a fifth contactor, a third contactor, a fourth contactor and a fifth contactor, the other end of the first contactor is connected with the cathode of the electrolytic bath, one end of the second contactor and one end of the fifth contactor, the other end of the second contactor and the other end of the fourth contactor are connected with the anode of the electronic load, and the cathode of the electronic load is connected with the other end of the third contactor and the other end of the fifth contactor; the method has the advantages that the acceleration stress test requirement is met, and the power supply interference in the EIS test can be eliminated.

The invention discloses a detection method, equipment and medium for a new energy high-power direct-current charging pile, and relates to the technical field of charging pile stability detection, and the method comprises the steps: controlling a direct-current electronic load to generate a load disturbance signal at N characteristic working points, collecting instantaneous value change data through a broadband data collection center, and calculating the stability of the charging pile according to the instantaneous value change data; and based on the dynamic load disturbance signal and the instantaneous value change data, calculating the pulse response characteristics of the to-be-tested DC charging pile at the N characteristic working points through a correlation function analysis method, constructing a dynamic impedance characteristic model, and based on the safe working area three-dimensional boundary map, the electric energy quality indexes of the N characteristic working points and the dynamic impedance characteristic model, calculating the dynamic impedance characteristic of the to-be-tested DC charging pile. And evaluating and diagnosing the comprehensive performance of the direct current charging pile to be tested. According to the direct current charging pile comprehensive performance detection method based on dynamic load disturbance, accurate physical examination of the overall performance of the charging pile is achieved, and the detection depth, precision and predictability are improved.

The invention discloses a battery management unit equalization efficiency test method and system, and relates to the technical field of function test, and the method comprises the steps: inputting a time-varying test instruction sequence into an electronic load instrument and a BMS for active equalization, synchronously collecting multi-modal time sequence data in an active equalization process, and constructing a dynamic equalization matrix; inputting the dynamic equilibrium matrix into a time-varying efficiency evaluation model, performing real-time association mapping by a working condition mapping layer, performing feature aggregation by a statistical aggregation layer, and outputting an efficiency distribution thermodynamic diagram; and performing global statistical characteristic analysis and multi-parameter coupling association on the efficiency distribution thermodynamic diagram and the dynamic equilibrium matrix, identifying an efficiency abnormal trend, performing time sequence prediction analysis and root cause analysis on the efficiency abnormal trend, and generating an equilibrium performance evaluation report. According to the method, the time-varying efficiency evaluation model is constructed, and the time-varying test instruction sequence is synchronously generated, so that the visualization and deep insight of the test result are realized, and the authenticity and compositeness of test excitation are improved.

The invention discloses a current slope control method, device and system, electronic equipment and a storage medium, applied to an electronic load system, the electronic load system comprises a first electronic load and a second electronic load which are connected in parallel, the first electronic load and the second electronic load are both connected with a tested power supply, the output current slope of the first electronic load is adjustable, and the output current slope of the second electronic load is adjustable. The output current slope of the second electronic load is non-adjustable. The method comprises the following steps: acquiring a target current slope; controlling a second electronic load to output a first current; acquiring the slope of the first current; determining a compensation current slope based on the target current slope and the slope of the first current; and controlling the first electronic load to output the second current at the compensation current slope, so that the output current slope of the electronic load system reaches the target current slope.

The invention discloses a transformer station DC system storage battery pack on-load discharge capacity checking method and system, and relates to the technical field of storage battery discharge maintenance, and the method comprises the steps: carrying out the equalizing charging of a storage battery pack through an equalizing charging voltage, and collecting the internal resistance of a single storage battery before capacity checking; after capacity checking is started, an intelligent electronic load value is adjusted, so that the output current of the storage battery pack keeps a constant set value; when a test ending condition is met, obtaining nuclear capacity discharge capacity according to the discharge current and the discharge time of the storage battery pack; the storage battery pack is charged after charging is finished, the capacity checking charging capacity is obtained according to the charging current and the charging time, and the internal resistance of the single storage batteries after capacity checking is collected after charging is finished; and generating an on-load discharge capacity checking test table according to the internal resistance of the single storage battery before capacity checking, the capacity checking discharge capacity, the capacity checking charge capacity and the internal resistance of the single storage battery after capacity checking so as to complete capacity checking of the storage battery pack. Remote online capacity checking is realized, and the problem of low reliability of the whole group of storage batteries caused by virtual connection of storage battery connecting strips or performance reduction of a single storage battery is solved.

The invention provides an electronic load grid voltage adjusting method based on an improved DQN algorithm, and the method comprises the steps: employing a DQN reinforcement learning architecture, collecting the high-frequency waveform data of the load pulling current of an electronic load, obtaining an instantaneous amplitude signal, an instantaneous phase signal and an instantaneous frequency signal through Hilbert transformation, and enabling the instantaneous amplitude signal, the instantaneous phase signal and the instantaneous frequency signal to serve as an environment state st; the environment state st is input into a multi-mode DeepSeek distillation model intelligent agent, and the intelligent agent outputs an electronic load MOS tube grid voltage regulating variable delta Pt as an action at; establishing a reward function rt with optimal control performance as a target; the intelligent agent executes the action at in the environment state st to obtain a new environment state st + 1, and (st, at, rt, st + 1) is stored in an experience playback buffer pool; and the network parameters are replayed, optimized and updated by adopting priority experience, so that the accurate control of the load pulling current of the electronic load is realized.

The present invention relates to a detection circuit for an energy storage battery impedance spectrum and a control method thereof, and belongs to the field of battery detection technology. The circuit includes a floating detection circuit, a microprocessor control system, a programmable electronic load, a high-precision voltage sensor, a high-precision current sensor, a charge and discharge switch, a charging power supply, and a discharge load; before applying excitation, the circuit uses a balancing capacitor as a medium, and controls the charge and discharge switch so that the balancing capacitor voltage offsets the DC voltage of the energy storage battery, thereby improving the detection accuracy of small changes in the power battery terminal voltage; in the impedance spectrum detection stage, by controlling the current flowing through the programmable electronic load, the decoupling problem of the energy storage battery charge and discharge current and the excitation current is solved; by the frequency sweeping operation of the composite excitation signal, the rapid online detection of the internal impedance spectrum of the energy storage battery is realized. The present invention can accurately detect the dynamic and static internal impedance spectra of the energy storage battery, and provide data support for the health status assessment of the energy storage battery.

The utility model discloses a parallel operation copper bar and system of an electronic load, and the parallel operation copper bar comprises a positive electrode copper bar which is used for connecting the positive electrode power input end of the electronic load; the cathode copper bar is used for connecting a cathode power input end of the electronic load, and the cathode copper bar and the anode copper bar are oppositely arranged at an interval; the insulating plate is arranged between the positive electrode copper bar and the negative electrode copper bar, and the positive electrode copper bar and the negative electrode copper bar are tightly attached to one side face of the insulating plate respectively. According to the invention, the amplitude of current overshoot oscillation can be reduced, and the reliability and safety of the parallel operation system of the electronic load are improved.

The invention discloses a testing device for a PCB (Printed Circuit Board). The testing device comprises a testing box body, a testing jig, a testing instrument and a control upper computer, a simulation battery module, a logic control module, an intermediate relay module, a reference BMS module and a power supply are arranged in the test box body; the simulation battery module outputs multiple paths of adjustable cell voltages for sampling of a PCB to be tested, the logic control module receives an instruction of an upper computer to control a test process, the intermediate relay module realizes signal switching and on-off control, the reference BMS module provides function parameter comparison, and the test instrument comprises an electronic load and a universal meter. The device is used for detecting parameters such as discharge performance, voltage and current. The test fixture is fixed and connected with a to-be-tested PCB, the contact port assembly can be replaced to adapt to different models, and the code scanning gun inputs test information and triggers a process. The device has the functions of multi-path voltage simulation, automatic signal switching and data acquisition and tracing, is modularized in structure and high in adaptability and expansibility, and can improve the batch detection efficiency and precision.

The invention discloses a self-gas-supply portable hydrogen fuel cell test platform and a test method. The self-gas-supply portable hydrogen fuel cell test platform comprises a control system, a test system and an electronic load, the test system comprises an anode / cathode gas supply system, an anode / cathode gas source treatment system, an anode / cathode gas humidifying system, a nitrogen purging system, a fuel cell and an anode / cathode tail exhaust backpressure system, the gas supply system, the gas source treatment system and the gas humidifying system of the anode are connected in sequence, and the gas supply system, the gas source treatment system and the gas humidifying system of the cathode are connected in sequence; the nitrogen purging system is connected with the anode and the cathode; the anode / cathode gas humidifying system is respectively connected with the anode / cathode gas inlet end of the fuel cell; the anode / y cathode tail discharge end of the fuel cell is connected with the anode / cathode tail discharge backpressure system; a traditional gas cylinder is replaced by gas production of the anode gas and the cathode gas, transportation and storage restrictions are eliminated, a mobile test scene is supported, and the device is particularly suitable for the on-site rapid detection requirement of a small fuel cell.

The invention belongs to the technical field of nuclear power, and particularly relates to an integrated thermoelectric conversion device testing device. According to the integrated thermoelectric device testing device provided by the invention, an inert gas and vacuum oxygen-free testing environment can be provided; and the test requirements of thermoelectric devices with the sizes of 100mm * 100mm and below are met. The controller controls the servo electric cylinder to apply pressure to the thermoelectric device, so that the stability of the internal resistance and thermal resistance of the tested thermoelectric device can be maintained, and meanwhile, the limit withstand pressure of the thermoelectric device can be tested; field vibration environments with various frequencies can be simulated through the vibration exciter; when the temperature of the hot end of the thermoelectric device reaches the temperature required by the test and the temperatures of the hot end and the cold end are constant, the resistance value of the programmable electronic load is changed through the controller, the voltage and the current of the programmable electronic load are read and recorded, and the conversion efficiency of the thermoelectric device is determined according to the recorded parameter values such as the voltage, the current, the temperature and the flow. The device is comprehensive in testing function and wide in application prospect.

The invention discloses a high temperature fuel cell HT-PEMFC temperature control method and system based on fuzzy ADRC. The method comprises the following steps: constructing an HT-PEMFC system comprising an electric pile, a hydrogen supply pipeline, an air supply pipeline, a hot oil loop, a data acquisition device, a direct current electronic load and a host; according to the operation data of each device in the HT-PEMFC system, a temperature dynamic model of the HT-PEMFC system is established based on a multi-physics field Modelica language platform Dymola; a fuzzy bandwidth adjustment strategy (Fuzzy-ADRC) is designed; the fuzzy bandwidth adjustment strategy Fuzzy-ADRC is used for stable control of the stack temperature under load current disturbance and circulating pump flow disturbance. According to the method, the problem of over-compensation energy consumption of a traditional ADRC under strong disturbance and the problem of high regulation energy consumption of PID are solved, and the method is one of optimal controllers for thermal management of the HT-PEMFC system.

The invention discloses a current output control method, device and system, electronic equipment and a storage medium, the current output control method, device and system are applied to an electronic load system, the electronic load system comprises a consumption type electronic load and a feedback type electronic load which are connected in parallel, the consumption type electronic load and the feedback type electronic load are both connected with a tested power supply, and the method comprises the following steps: obtaining a target current value; based on the target current value, controlling the feedback type electronic load to output at a first output current; based on the target current value and the first output current, controlling the consumable electronic load to output with a second output current; the rising speed of the second output current is greater than that of the first output current; and under the condition that the output current of the electronic load system is the target current value, the consumption type electronic load is controlled to output a third output current, so that the output current of the electronic load system is kept at the target current value until the output current of the feedback type electronic load reaches the target current value and the third output current keeps a descending trend.

The invention provides a mining DC power supply electrical performance detection system, and the method comprises the steps: connecting one end of a programmable AC power supply to a PCI bus industrial control computer, and connecting the other end of the programmable AC power supply to the input end of a detected mining DC power supply; the programmable direct-current power supply and the programmable multi-path electronic load are respectively connected with the PCI bus industrial personal computer and the ampere meter; the input end of the ampere meter is connected with the tested mining direct-current power supply, and the output end of the ampere meter is connected with the programmable direct-current power supply, the programmable multi-path electronic load and the PCI bus industrial personal computer; one end of the digital memory oscilloscope is connected between the output end of the tested mining direct-current power supply and the input end of the ampere meter, and the other end of the digital memory oscilloscope is connected to the PCI bus industrial personal computer; one end of the first voltmeter is connected to the PCI bus industrial personal computer, and the other end of the first voltmeter is connected between the output end of the programmable alternating current power supply and the input end of the tested mining direct current power supply. According to the technical scheme provided by the invention, the detection efficiency and precision of the electrical performance of the mining DC power supply are improved.

The utility model discloses a test verification system with an intelligent charging function and a new energy vehicle, and the system comprises a storage battery which is connected with a DC / DC; the vehicle control unit is connected with the storage battery and used for conducting intelligent electricity supplementing on the storage battery through the intelligent electricity supplementing function. The programmable electronic load is connected in parallel to the anode and cathode ends of the storage battery and is used for simulating a high-power electric appliance to quickly consume the electric quantity of the storage battery; the data acquisition equipment is respectively connected with the storage battery and the DC / DC; and the network test equipment is connected with the vehicle control unit through a diagnosis interface, and the data acquisition equipment and the network test equipment are used for monitoring the voltage, the charging current and the message information of the storage battery in real time. According to the utility model, the electric quantity of the storage battery is quickly consumed through the programmable electronic load, and the test verification period is shortened; and meanwhile, real-time monitoring of storage battery voltage, charging current and message information can be realized through the data acquisition equipment and the network test equipment, and the execution condition of the intelligent charging function is effectively verified.

The utility model discloses a miniature electronic load instrument applied to production, which comprises an instrument body, one end of the instrument body is provided with a to-be-tested switching power supply connecting port, the instrument body is provided with a liquid crystal display screen and a plurality of function keys, and the function keys comprise a start key, a setting key, a + key and a-key. A main control board is arranged in the instrument body, the main control board comprises a single chip microcomputer, a to-be-tested switching power supply connecting port, a liquid crystal display screen, a start key, a setting key, a + key and a-key are electrically connected with the main control board, and the to-be-tested switching power supply connecting port, the single chip microcomputer, the liquid crystal display screen, the start key, the setting key, the + key and the-key form a main control circuit. According to the utility model, the conventional professional equipment is replaced, the cost of instruments, equipment and materials is greatly reduced, the parameter adjustment of a test experiment product can be quickly responded, and meanwhile, various test parameters of the test product can be intuitively observed through the 1602 liquid crystal on the surface, so that the use is convenient.

The invention discloses a current compensation method of a vehicle lamp controller. A to-be-measured vehicle lamp controller channel and a target output current of a to-be-measured function in the channel are selected; replacing the actual maximum load with an electronic load, and measuring the actual current with test equipment; calculating a current compensation value, and sending the current compensation value to the vehicle lamp controller through the CAN diagnosis equipment; after receiving the current compensation value, the vehicle lamp controller judges whether the sum of the current compensation value and the actual current value exceeds the maximum allowable value or not, and if not, the compensation value is updated; the vehicle lamp controller adjusts the output current according to the target output current and the compensation value; the invention also discloses a system used by the current compensation method of the vehicle lamp controller. Calibration is carried out according to the vehicle lamp functions, the currents corresponding to all the vehicle lamp functions are calibrated and stored respectively, special calibration compensation currents are used for different vehicle lamp functions, it is ensured that the deviation between the actual output current and the target current is smaller, and the number of defective products with the currents exceeding the design range is reduced.

The utility model relates to the technical field of electronic load, in particular to a small-size wide-range electronic load circuit, which comprises an electronic load board card and an adaptive board card, the electronic load board card is provided with a sampling module and an operational amplifier module connected with the sampling module, and the adaptive board card is provided with an MCU master controller, a power module and a protection module. The MCU master controller is connected with the operational amplifier module, the power module and the protection module. According to the board card level resistance load scheme, the positive electrode and the negative electrode of a power supply can be automatically checked, a pull current test is carried out on the positive power supply, a sink current test is carried out on the negative power supply, an automatic gear shifting function is adopted in the system, different current ranges are set, a power device is placed on a board card except an electronic load board card, and the test efficiency is improved. The size is reduced, and the integration level is higher.