15 results about "Programmable load" patented technology

The invention relates to the technical field of electric energy meter calibration, and provides an intelligent calibration method and system for an electric energy meter. The method comprises the steps that after calibration is triggered, a bus electric energy meter is switched to a bus-level electrical isolation scene through a switching relay; extracting a first group of bus-level metering values after injecting all-condition steady-state signals; comparing the theoretical values to calculate a first group of bus-level errors; judging whether to switch to a branch-level electrical isolation scene or not according to the error distribution characteristics; if switching is carried out, a multi-dimensional disturbance load combination is dynamically loaded on the K branch circuits through the program control load module, and a second group of bus level metering values are synchronously metered; and performing branch-level energy consumption error traceability calculation on the second group of values, and executing closed-loop calibration to solve the technical problems of low calibration precision and incapability of accurately reflecting error distribution caused by incapability of coping with a multi-dimensional disturbance load environment in real time in a traditional electric energy meter calibration process, so as to achieve the purposes of improving the accurate calibration capability of the electric energy meter in multiple scenes and improving the calibration accuracy of the electric energy meter in multiple scenes. And the equipment calibration time is shortened.

The embodiment of the invention discloses a super charging interface metrological verification device and method, and the device comprises a communication simulation unit which communicates with a super charging pile and is used for controlling the starting or stopping of a charging process. And the charging interface control simulation unit is used for being electrically connected with the super charging pile and providing a corresponding electrical parameter acquisition interface. And the programmable load unit is used for simulating a power battery load of the electric vehicle and receiving the electric energy transmitted by the charging interface control module. And the battery voltage simulation unit is connected with the interface control simulation unit of the charging interface control module and is used for simulating the battery voltage of the electric automobile. And the electric energy metering unit is electrically connected with the charging interface unit and is used for performing electric energy metering detection on the process of acquiring the electric energy by the programmable load unit to obtain an electric energy detection result. According to the invention, the metrological verification problems of large transient power and short charging time of a super charger of an existing charging facility are solved, and the metering accuracy of a high-power charging interface is effectively guaranteed.

The invention provides a test system of a direct current charging pile. The test system comprises a programmable load; the I / O controller is connected with one end of the I / O controller after the plugs and the sockets of the different functional units of the direct current charging pile are butted; and the control system is used for outputting a control instruction to the I / O controller, so that the I / O controller outputs a driving signal to the functional units according to the control instruction to respectively perform on / off control. According to the invention, on-off of each function signal can be respectively controlled according to test case requirements, and automatic gun insertion and extraction, automatic card swiping authentication and automatic charging pile off-line and on-line in a charging pile system test process are realized. The system can automatically drive an emergency stop switch and an access control switch, automatically adjust the temperature change of a charging gun, automatically load and adjust the size of a load, and automatically achieve the power supply and outage of a charging pile, and does not need the manual intervention of a tester in the testing process, thereby solving the problem of poor consistency of manual operation, and improving the testing efficiency. And the test efficiency of aging test, repeatability test and the like can be greatly improved.

The invention provides a dual-redundancy R-EPS steering system electronic power unit performance detection device, and relates to the technical field of steering system testing. The control unit is in communication connection with the upper computer; the actuating mechanism comprises a programmable load motor, the control end of the actuating mechanism is connected with the control unit, and the output end of the actuating mechanism is connected with a motor output shaft of the tested electronic power unit; the sensing feedback module comprises a plurality of sensors used for collecting operation parameters of the tested electronic power unit, and each sensor is connected with the control unit; the fault simulation module is integrated in the control unit, and the output end of the fault simulation module is used for connecting a fault injection node of the tested electronic power unit; wherein the programmable load motor, the sensing feedback module and the fault simulation module form an integrated test system for performing dynamic load test and active fault injection test on the tested electronic power unit under the coordination of the control unit. High integration and automation of the detection process can be realized, and the test efficiency and consistency are improved.

The invention belongs to the technical field of integrated circuits, and discloses a synchronous binary ratio multiplier chip testing method, device and equipment and a storage medium. The method comprises the following steps: starting an automatic test device and performing self-inspection, and then dynamically configuring test parameters; generating a boundary value and random sampling combination by utilizing a divide-and-conquer algorithm on the basis of the test parameters, executing a rate multiplication function test, a synchronous loading function test and a zero clearing function test in parallel to obtain a function test result, and monitoring phase deviation of a clock signal and an output signal in real time by adopting a time sequence closed-loop feedback circuit to obtain a time sequence parameter measurement result; a programmable load module of the ATE is connected with an output pin of the chip to be tested, load resistance is dynamically scanned, a curve of output voltage changing along with load is recorded, and an electrical characteristic test result is obtained; and generating a test report by integrating a plurality of test results, and realizing efficient function verification by utilizing dynamic configuration input parameters and multi-mode parallel test.

The invention discloses a multi-output intelligent automatic adjusting and detecting system. The system comprises an integrated cabinet, a control host, an output control module, a multipath program control load and a software control module. The integrated cabinet adopts an anti-interference design and is internally provided with a plurality of test devices, so that electromagnetic interference is inhibited, and the test precision is guaranteed. And the output control module realizes sequential switching detection of multiple output channels through multiple relays. The program-controlled load can simulate actual working conditions and dynamically adjust load current. And the software control module automatically executes operations such as test equipment initialization, test process control, data acquisition and analysis, report generation and the like. Meanwhile, the system has modularized hardware layout and software configuration, and is high in compatibility and expandability. The test method based on the system can efficiently complete multi-path output test. In addition, the invention further provides a cabinet layout structure matched with the cabinet. The system greatly improves the testing efficiency and accuracy, reduces the cost, and has a wide application prospect in the field of electronic equipment testing.

The invention relates to the technical field of industrial automatic testing, in particular to an automatic offline detection system for an all-in-one controller. Comprising a hardware layer, a control layer and a data layer, the hardware layer is connected with the control layer through a data bus, the control layer is connected with the data layer through a data interface, the hardware layer is integrated with a CAN1939J protocol interface, a programmable load module, an EMI shielding unit and a temperature sensor, the control layer comprises a test logic engine and a coupling compensation engine based on a QT frame, and the coupling compensation engine is connected with the control layer. The data layer comprises an SQLite real-time test database, the EMI shielding unit is used for collecting electromagnetic interference intensity signals, the temperature sensor is used for collecting test environment temperature signals, the programmable load module is used for collecting dynamic load change rate signals, and the coupling compensation engine is used for receiving the signals and generating a correction instruction. The test logic engine controls the hardware layer to execute a test according to the correction instruction and transmits data to the data layer for storage; according to the invention, the test accuracy and the data traceability can be improved.

The system for predicting the health and service life of rechargeable electrochemical cells consists of a measuring chamber (1), which contains a charging disconnector (2) and a discharging disconnector (3), a tested electrochemical cell (4), a camera (5) and a temperature measurement block (6), and further of a programmable source (7), a programmable load (8) and a control system (9), which is formed by a control circuit (10), a charging control block (11) and a discharging control block (12), and further of an evaluation system (13), which is formed by a data collection block (14), a parameter extractor (15), an evaluation block (16), a database (17), a reference values ​​block (18) and a results display block (19). The system for predicting the health and lifespan of rechargeable electrochemical cells, based on measurements from the charging and discharging process of a given electrochemical cell, evaluates the parameters of the equivalent circuit of the evaluated electrochemical cell.

The invention relates to a power supply testing system and method, and belongs to the technical field of electric power testing, and the power supply testing system comprises a programmable load which is connected with three phases of a power supply to be tested to form a closed loop; the voltage sensor is used for measuring a three-phase voltage signal of the power supply to be measured; the current sensor is used for measuring an A-phase current signal of the power supply to be measured; the universal meter is used for sampling the three-phase voltage signal and the A-phase current signal to obtain sampling data; the upper computer is used for controlling the programmable load with a first preset logic within a first time period and determining a static output index of the power supply to be tested, and controlling the programmable load with a second preset logic within a second time period and determining a dynamic output index of the power supply to be tested, the first preset logic being progressive increase and progressive decrease of the load; the second preset logic is alternately switched between no load and full load. According to the invention, the measurement cost of the output index of the three-phase power supply device is effectively reduced.

This application relates to the field of electricity meter calibration technology, and provides an intelligent calibration method and system for electricity meters. The method includes: after calibration triggering, switching the bus-level electricity meter to a bus-level electrical isolation scenario via a switching relay; extracting the first set of bus-level metering values ​​after injecting a full-condition steady-state signal; calculating the first set of bus-level errors by comparing with theoretical values; determining whether to switch to a branch-level electrical isolation scenario based on error distribution characteristics; if switching, dynamically loading multi-dimensional disturbance load combinations in K branch circuits via a programmable load module to simultaneously measure the second set of bus-level metering values; performing branch-level energy consumption error tracing calculation on the second set of values ​​and executing closed-loop calibration. This addresses the technical problem of traditional electricity meter calibration processes being unable to respond to multi-dimensional disturbance load environments in real time, resulting in low calibration accuracy and inaccurate error distribution reflection. The method aims to improve the accuracy of electricity meter calibration in multiple scenarios and reduce equipment calibration time.

The application belongs to the technical field of brake system performance testing, and relates to an automatic testing system and method for HCU liquid path performance of a vehicle brake system. The system is arranged in a fully-closed safety cabinet, and comprises an upper computer, a servo cylinder pressure building, HCU control, dynamic cooling and a programmable load simulation unit. The system is cooperatively controlled through a CAN bus to realize accurate cooperation of pressure building, pressure maintenance, pressure reduction and valve body driving. The dynamic cooling system adjusts air cooling parameters according to load and time length to ensure stable coil temperature rise. The programmable load unit simulates working condition load by combining multiple steel cylinders. The testing method comprises the steps of preparation, parameter configuration, automatic exhaust, automatic testing, safety monitoring and report generation. Data is collected at high frequency throughout the process, and a PDF report with diagnostic suggestions is automatically analyzed and generated for archiving and storage in a three-level structure. The application realizes full-process automation, has high testing precision, high safety and traceable data, and can efficiently complete HCU liquid path performance detection.

The utility model relates to the technical field of electrical engineering, and discloses a program-controlled load box device which comprises a box body frame, a plurality of heat dissipation shells are fixedly connected to the periphery of the box body frame respectively, a plurality of load card installation frames are fixedly connected to the interior of the box body frame, a plurality of load cards are detachably connected to the outer walls of the load card installation frames, and the load cards are fixedly connected to the box body frame. The external part of the load card is fixedly connected with a rising assisting device, a first measuring interface, a menu button, two nixie tube displays and a plurality of measuring resistors, and the measuring resistors are fixedly connected with the external part of the load card. The outer wall of the load card is fixedly connected with a plurality of cooling fins. According to the utility model, the 2 / 4 / 6 / 8 / 10 / 12 / 14 omega switching is realized through program control, so that the problem that the test efficiency is influenced due to overlong preparation time in the early stage is avoided, and meanwhile, the equipment is small in size and convenient to maintain.

The present invention discloses a programmable load servo system and an experimental method thereof, which relate to the field of experimental teaching. The device comprises a drive servo system, a load servo system, a host computer, a controller, and a torque sensor; the drive servo system and the load servo system are respectively provided with a first pulley and a second pulley, the first pulley and the second pulley are connected by a belt, and the belt is provided with a tensioning device. The host computer and the controller communicate via Ethernet, and the motion states of the drive servo motor and the load servo motor are displayed in real time. At the same time, the torque setting curve of the load can be set in a graphical manner. The present invention can simulate loads in complex engineering, is simple to operate, easy to use, and highly safe. It can be used in experimental teaching related to professional servo systems such as automation and robotics, and can cultivate students' ability to solve complex engineering problems.

The application relates to a portable power distribution terminal battery health inspection device and method. The device comprises: a battery inspection module for online parameter identification and health state evaluation of a backup battery of a power distribution terminal based on a battery equivalent circuit model; a debugging interface module integrated with an overcurrent protection circuit and an overvoltage suppression module; an analog circuit breaker module for simulating circuit breaker opening and closing operations, applying programmable load power to the power distribution terminal to verify the dynamic output performance of the battery; a state indication module for monitoring the connection state of the debugging interface module based on non-contact sensing technology and providing visual indication; and a communication detection module for listening to and analyzing communication data between the power distribution terminal and a superior master station, and verifying the quality of the communication link. The method can improve the accuracy, completeness and field operation efficiency of the power distribution terminal battery health state evaluation.

The invention discloses a variable load degaussing power supply test method and system, and relates to the technical field of degaussing, and the variable load degaussing power supply test method mainly comprises the steps: simulating an actual operation load through a programmable load, carrying out the simulation load test of a degaussing power supply, and collecting test data to obtain historical data; the method comprises the following steps: preprocessing historical data, and dividing the processed data into a training set and a test set; according to the training set and the test set, training an artificial neural network model by using a loss function and an optimizer to obtain a trained artificial neural network model; and obtaining a prediction result by using the trained artificial neural network model according to real-time data of the degaussing power supply. By implementing the variable load degaussing power supply testing method and system provided by the invention, the performance of the degaussing power supply can be conveniently measured and predicted in real time.