Automatic testing equipment of electrical control device

Abstract

The invention discloses automatic testing equipment of an electrical control device. The device comprises a man-machine interaction device, a computer system, an Ethernet control system, an electrical signal adapter and a special test device external interface. The computer system controls the plurality of functional board cards through modular design, and analyzes, processes and displays test data in real time. The Ethernet control system expands a network interface and supports remote control and data exchange. The electrical signal adapter integrates the functions of power conversion, signal isolation, characteristic simulation and the like. And the external interface of the special test equipment realizes test automation. According to the method and the device, the technical problems of low efficiency and insufficient test coverage due to the fact that a traditional test method always depends on manual test are solved, and the technical effects of remarkably improving the test efficiency, accuracy and reliability, reducing the development and maintenance cost and meeting the rapid, accurate and comprehensive test requirements of the electrical control device are achieved.

Description

Technical Field

[0001] The present application relates to the field of production testing of aircraft electrical control devices, and in particular, to an automated testing device for electrical control devices. Background Art

[0002] The electrical control device is an important part of the aircraft electrical system, providing power system management for the aircraft, completing the activation of various components, and monitoring and measuring key control quantities. In the current research and development and testing process of electrical control devices, the testing link plays a vital role in ensuring product quality and reliability. Traditional testing methods often rely on manual testing, which is inefficient and has insufficient test coverage, and cannot meet the needs of fast, accurate, and comprehensive testing of electrical control devices.

[0003] With the continuous development of automation technology, automated test equipment has been widely used in the field of electrical control device testing. Automated test equipment realizes automated testing of electrical control devices through computer programs and automatic control technology, greatly improving test efficiency and accuracy. However, since the electrical system of an aircraft is a complex system, different models of the same series in the engineering development stage, and even electrical control devices of the same model at different development stages, have different design requirements and application scenarios, so the test requirements for electrical control devices are also different. The interface definition and related criteria of the automated test equipment of the electrical control devices used in conjunction are also different. The scalability is poor, and it is impossible to fully realize the integrated test of large current control and insulation resistance. The dedicated characteristics increase the development cost of the test system, and there are still manual operation steps in the whole process of testing. With the vigorous development of my country's aerospace industry, there are more and more types of electrical control devices. It is necessary to develop a highly integrated and comprehensive general electrical control device automated test equipment that can reuse the same design method and software implementation path to reduce the development cost of the aircraft test system, and at the same time avoid the technical risks and schedule risks brought by the development of automated test equipment for electrical control devices.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiment of the present application provides an automated testing device for an electrical control device, so as to at least solve the technical problems that traditional testing methods often rely on manual testing by humans, are inefficient and have insufficient test coverage.

[0006] According to one aspect of an embodiment of the present application, there is provided an automated testing device for an electrical control device, comprising: a human-computer interaction device for inputting test instructions, setting test parameters, and viewing test results; a computer system connected to the human-computer interaction device, for controlling a plurality of functional boards according to a preset control program, and for performing real-time analysis, processing, storage, and display of data from the functional boards, and controlling the working state of a device connected to a network interface; an Ethernet control system connected to the computer system, for extending a network interface, and for detecting the insulation resistance of the electrical control device through the device connected to the network interface and providing electrical energy to the electrical control device; an electrical signal adapter connected to the computer system and the Ethernet control system, respectively, for realizing power conversion, signal isolation, characteristic simulation, relay control, and insulation resistance testing; an external interface of a dedicated test device, connected to the electrical signal adapter, for externally connecting the electrical control device to realize large current control performance verification and insulation resistance testing of the electrical control device.

[0007] Optionally, the computer system includes a main controller board, a control digital IO board, an ADC board, a multimeter board, a matrix switch board and a communication board; wherein communication and control between the main controller board and the control digital IO board, the ADC board, the multimeter board, the matrix switch board and the communication board are achieved through a bus interface.

[0008] Optionally, the main controller board is used to control the control digital IO board, the ADC board, the multimeter board, the matrix switch board and the communication board according to a preset control program, and to analyze, process, store and display the test data in real time; the digital IO board is used to realize the output control of the digital signal of each functional board in the electrical signal adapter, and the input readback of the digital signal, and transmit the digital signal to the main controller board for processing; the ADC board is used to realize the input detection of the analog signal of each functional board in the electrical signal adapter, and transmit the analog signal to the main controller board for processing; the multimeter board is used to detect the resistance value and the voltage value in the electrical control device, and transmit the resistance value and the voltage value to the main controller board for processing; the matrix switch board is used to cooperate with the multimeter board through the internal matrix circuit to realize the connection switching between different signal ports under test of the detection port of the multimeter board; the communication board is used to realize the test of the communication function of the electrical control device.

[0009] Optionally, the Ethernet control system includes an Ethernet switch, an insulation resistance tester, a main power supply, and an ignition battery power supply; wherein the Ethernet control system is connected to the computer system via a network cable.

[0010] Optionally, the Ethernet switch is used to expand the number of network interfaces; the insulation resistance tester is used to detect the insulation resistance that needs to be detected in the electrical control device; the main power supply is used to simulate the main power supply of the aircraft to provide electrical energy for the electrical control device; the ignition battery power supply is used to simulate the ignition battery of the aircraft to provide electrical energy for the electrical control device.

[0011] Optionally, the electrical signal adapter includes a power supply function board, an isolated output function board, an isolated input function board, an pyrotechnic simulation function board, a signal relay function board, a power relay function board and an insulating relay function board; wherein the electrical signal adapter is respectively connected to the computer system and the Ethernet control system through a cable bundle.

[0012] Optionally, the power supply function board is used to convert the main power supply into the voltage required by each module inside the automated test equipment; the isolated output function board is used to electrically isolate the output signal of the automated test equipment from the electrical control device and then output it; the isolated input function board is used to electrically isolate the input signal that needs to be detected by the automated test equipment from the electrical control device and then input it; the pyrotechnics simulation function board is used to simulate the working characteristics of pyrotechnics in an aircraft; the signal relay function board is used to generate the small current passive signal required by the automated test equipment; the power relay function board is used to generate the large current passive signal required by the automated test equipment; the insulation relay function board is used to switch the insulation resistance contacts required to be detected by the automated test equipment, and cooperate with the insulation resistance tester to test the insulation resistance between multiple contacts of the electrical control device.

[0013] Optionally, the external interface of the dedicated test equipment includes a high current test interface and an insulation resistance test interface; wherein the external interface of the dedicated test equipment is connected to the electrical signal adapter via a cable bundle.

[0014] Optionally, the high current test interface is used to connect to the electrical control device externally to verify the high current control performance of the electrical control device; the insulation resistance test interface is used to connect to the electrical control device externally to test the insulation resistance of the electrical control device.

[0015] Optionally, the external interface of the dedicated test equipment also includes a full-function test interface; wherein: the full-function test interface is used to externally connect the electrical control device to realize other function and performance verification of the electrical control device in addition to large current control performance verification and insulation resistance test; wherein, the other functions and performances include at least one of the following: system conduction characteristics, static resistance, signal receiving function, signal output function, energy efficiency and power consumption, communication function.

[0016] The embodiment of the present application provides a highly integrated and fully functional general electrical control device automated testing equipment. All test processes of the automated testing equipment, including the test of large current control and insulation resistance, are automated, which improves the test efficiency while reducing manual intervention and errors. The computer system and electrical signal adapter adopt a modular design, which is easy to expand and makes the test equipment easy to upgrade and expand to meet the changes in different test requirements. The large current control performance verification and insulation resistance test are connected with a separate test interface to ensure safety during testing, thereby solving the technical problem that traditional testing methods often rely on manual testing, which is inefficient and has insufficient test coverage, thereby achieving the technical effect of significantly improving test efficiency, accuracy and reliability, reducing development and maintenance costs, and meeting the needs of fast, accurate and comprehensive testing of electrical control devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 A schematic diagram of an automated testing device for an electrical control device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of another automated testing device for an electrical control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] According to one aspect of an embodiment of the present application, an automated testing device for an electrical control device is provided to implement integrated and automated testing of the functions of the electrical control device. Figure 1 A schematic diagram of an automated testing device for an electrical control device provided in an embodiment of the present application, such as Figure 1 As shown, the automated test equipment includes: a human-computer interaction device 11, a computer system 12, an Ethernet control system 13, an electrical signal adapter 14, and a dedicated test equipment external interface 15. The automated test equipment is described in detail below.

[0023] The human-computer interaction device 11 is used to input test instructions, set test parameters and view test results; wherein the human-computer interaction device integrates a display screen, a keyboard and a mouse (or a touch screen), and the above-mentioned device can be used to input test instructions, set test parameters and view test results on the automated test equipment.

[0024] The computer system 12 is connected to the human-computer interaction device 11, and is used to control multiple functional boards according to a preset control program, and to analyze, process, store and display data from the functional boards in real time, and to control the working state of the equipment connected to the network interface; wherein the computer system adopts a modular design, and the computer system is based on CPCI bus technology. The computer system includes a main controller board, and the main controller board controls the digital IO board, ADC board, multimeter board, matrix switch board, and communication board through a bus interface. The above-mentioned functional modules can be independently upgraded or replaced to realize the maintenance and expansion of the automated test equipment. In addition, the main controller board controls the working state of the insulation resistance tester, the main power supply, and the ignition battery power supply through the Ethernet switch.

[0025] The Ethernet control system 13 is connected to the computer system 12 and is used to expand the network interface, detect the insulation resistance of the electrical control device through the device connected to the network interface, and provide power to the electrical control device;

[0026] The electrical signal adapter 14 is connected to the computer system 12 and the Ethernet control system 13 respectively, and is used to realize power conversion, signal isolation, characteristic simulation, relay control and insulation resistance testing; wherein, the electrical signal adapter adopts a modular design, which includes but is not limited to a power function board, an isolated output function board, an isolated input function board, an pyrotechnic simulation function board, a signal relay function board, a power relay function board, and an insulation relay function board.

[0027] The external interface 15 of the dedicated test equipment is connected to the electrical signal adapter 14 and is used for externally connecting the electrical control device to verify the large current control performance and perform insulation resistance testing on the electrical control device.

[0028] In order to solve the above problems in the prior art, the present application provides an automated test device for an electrical control device, which provides a hardware foundation for realizing the universalization and test integration of automated test devices for electrical control devices. The device has the characteristics of modular design and high integration, providing a dedicated test device external interface, and adopting human-computer interaction and automated control.

[0029] For example, the computer system adopts a modular design, including the main controller board, digital IO board, ADC board, multimeter board, matrix switch board and communication board, etc. These functional boards are connected through the CPCI bus, support independent upgrade or replacement, and ensure the flexibility and scalability of the system. The Ethernet control system expands the number of network interfaces through the Ethernet switch, supports the access of multiple test equipment, and realizes remote control and data exchange of equipment such as insulation resistance testers, main power supplies and ignition battery power supplies through the network interface. The electrical signal adapter integrates the power function board, isolated output function board, isolated input function board, pyrotechnics simulation function board, signal relay function board, power relay function board and insulation relay function board, realizing the comprehensive integration of power conversion, signal isolation, characteristic simulation, relay control and insulation resistance testing.

[0030] The full-function test interface is used for external electrical control devices to verify their other functions and performances except for large current control performance verification and insulation resistance test. The interface supports multiple test items such as system conduction characteristics, static resistance, signal receiving function, signal output function, energy efficiency and power consumption, communication function, etc., to ensure that all functions and performance indicators of electrical control devices are fully covered. The large current test interface is used for external electrical control devices to verify their large current control performance. This interface has the characteristics of high current resistance and low resistance, can carry large currents of hundreds of amperes, and has built-in fuses and thermistors to ensure a safe and reliable testing environment. The insulation resistance test interface is used for external electrical control devices to test their insulation resistance. The interface supports multi-point testing, and cooperates with the insulation relay function board to achieve accurate measurement of the insulation resistance between multiple contacts to ensure the safety of the electrical system.

[0031] The human-computer interaction device provides a graphical user interface (GUI) through which users can input test instructions, set test parameters, and view test results. The human-computer interaction device is closely integrated with the computer system, realizing the visualization and convenient operation of the test process. The computer system automatically schedules the workflow of each functional board according to the preset control program, collects and analyzes test data in real time, and stores and displays the results. The entire test process does not require human intervention, which improves test efficiency and accuracy.

[0032] Through the above solution, the electrical control device automated testing equipment of the present application has the following significant technical effects: the automated testing process reduces manual intervention, greatly improves testing efficiency, and shortens the testing cycle. The full-function test interface and integrated test module ensure comprehensive coverage of all functions and performance indicators of the electrical control device, avoiding the omission of key test items. The modular design and flexible interface definition enable the test system to adapt to electrical control devices of different models and development stages, reducing development costs and maintenance difficulties. The highly integrated test system realizes comprehensive testing of multiple functions such as high current control and insulation resistance testing, simplifies the test process, and improves the continuity and reliability of the test.

[0033] To summarize, the electrical control device automated testing equipment of the present application solves the problem that traditional testing methods often rely on manual testing, which is inefficient and has insufficient test coverage, through modular design, full-function test interface, automated control and flexible interface definition. It significantly improves test efficiency, accuracy and reliability, reduces development and maintenance costs, and meets the needs of fast, accurate and comprehensive testing of electrical control devices.

[0034] Figure 2 A schematic diagram of another automated testing device for an electrical control device provided in an embodiment of the present application, such as Figure 2As shown, the computer system 12 includes a main controller board 1201, a control digital IO board 1202, an ADC board, a multimeter board, a matrix switch board and a communication board; wherein, communication and control between the main controller board 1201 and the control digital IO board 1202, the ADC board 1203, the multimeter board 1204, the matrix switch board 1205 and the communication board 1206 are realized through a bus interface 1207. Specifically, the main controller board 1201 is used to control the digital IO board 1202, ADC board 1203, multimeter board 1204, matrix switch board 1205 and communication board 1206 according to a preset control program, and to analyze, process, store and display the test data in real time; the digital IO board is used to realize the output control of the digital signal of each functional board in the electrical signal adapter 14, and the input readback of the digital signal, and transmit the digital signal to the main controller board 1201 for processing; the ADC board 1203 is used to realize the electrical The signal adapter 14 detects the input of analog signals of each functional board, and transmits the analog signals to the main controller board 1201 for processing; the multimeter board 1204 is used to detect the resistance value and voltage value in the electrical control device, and transmit the resistance value and voltage value to the main controller board 1201 for processing; the matrix switch board 1205 is used to realize the connection switching between different signal ports to be tested of the detection port of the multimeter board 1204 through the internal matrix circuit in cooperation with the multimeter board 1204; the communication board 1206 is used to realize the test of the communication function of the electrical control device.

[0035] As an optional embodiment, the main controller board 1201 is the core control unit of the entire automated test equipment, which is constructed based on a high-performance microprocessor or FPGA (field programmable gate array). It is connected to the digital IO board 1202, ADC board 1203, multimeter board 1204, matrix switch board 1205 and communication board 1206 through the CPCI bus interface. The main controller board 1201 is pre-installed with a customized control program, which automatically schedules the workflow of each board according to the test requirements, and collects and processes the data from each board in real time. For example, in a complete electrical control device test process, the main controller board 1201 first starts the digital IO board 1202 for initialization settings, and then activates the ADC board 1203, multimeter board 1204, matrix switch board 1205 and communication board 1206 in turn to ensure that each test step is executed in a predetermined order.

[0036] As an optional embodiment, the digital IO board 1202 includes multiple digital input and output channels, each of which can be independently configured as an input or output mode. During the test process, it receives instructions from the main controller board 1201, controls the digital signal outputs of each function board in the electrical signal adapter 14, and reads the digital signal inputs of these function boards. For example, in a specific test scenario, the digital IO board 1202 can send a control signal to the isolated output function board to activate a specific circuit according to the instructions of the main controller board 1201, and read the feedback signal from the isolated input function board to confirm whether the circuit responds correctly.

[0037] As an optional embodiment, the ADC board 1203 is equipped with multiple high-resolution analog-to-digital conversion channels for converting analog signals (such as voltage, current, etc.) of each functional board in the electrical signal adapter 14 into digital signals. The converted data is transmitted to the main controller board 1201 through the bus interface for further processing. For example, when testing the analog signal response of the electrical control device, the ADC board 1203 can collect the analog signal from the pyrotechnic analog functional board in real time and convert it into a digital format for the main controller board 1201 to analyze and judge.

[0038] As an optional embodiment, the multimeter board 1204 integrates a high-precision resistance and voltage measurement module, which can automatically switch the range and is suitable for resistance and voltage measurements in different ranges. Through the cooperation of the matrix switch board 1205, it can flexibly switch between different measured signal ports to achieve multi-point measurement. For example, when testing the insulation performance of an electrical control device, the multimeter board 1204 can work in conjunction with the insulation relay function board to measure the insulation resistance between multiple contacts to ensure the safety of the electrical system.

[0039] As an optional embodiment, the matrix switch board 1205 integrates a complex matrix circuit, which can dynamically configure the connection between different signal ports under test according to the instructions of the main controller board 1201. It works closely with the multimeter board 1204 to achieve flexible multi-point measurement. For example, when testing multiple signal channels of an electrical control device, the matrix switch board 1205 can quickly switch the detection ports of the multimeter board 1204 as needed to ensure that each channel can be fully tested.

[0040] As an optional embodiment, the communication board 1206 supports multiple communication protocols (such as RS-232, RS-485, CAN, Ethernet, etc.) for testing the communication function of the electrical control device. It can simulate different communication scenarios and verify the communication capability of the electrical control device through the instructions of the main controller board 1201. For example, when testing the communication module in the electrical system of the aircraft, the communication board 1206 can simulate the communication link between the ground station and the aircraft to test the stability and reliability of data transmission.

[0041] Furthermore, if Figure 2 As shown, the Ethernet control system 13 includes an Ethernet switch 1301, an insulation resistance tester 1302, a main power supply 1303, and an ignition battery power supply 1304; wherein the Ethernet control system is connected to the computer system 12 via a network cable. Specifically, the Ethernet switch 1301 is used to expand the number of network interfaces; the insulation resistance tester 1302 is used to detect the insulation resistance that needs to be detected in the electrical control device; the main power supply 1303 is used to simulate the main power supply 1303 of the aircraft to provide power to the electrical control device; and the ignition battery power supply 1304 is used to simulate the ignition battery of the aircraft to provide power to the electrical control device.

[0042] As an optional embodiment, the Ethernet switch 1301 uses an industrial-grade Gigabit Ethernet switch with multiple RJ45 interfaces (such as 8 or more), supports the IEEE 802.3 standard, and ensures high-bandwidth and low-latency data transmission. In an automated test environment, the Ethernet switch 1301 connects the computer system, the main controller board 1201, the insulation resistance tester 1302, the main power supply 1303, and the ignition battery power supply 1304 via a network cable. It not only expands the number of network interfaces, but also supports star or ring network topologies, enhancing the reliability and redundancy of the system. The Ethernet switch 1301 has SNMP (Simple Network Management Protocol) support, allowing users to remotely monitor and manage the status of the switch through the network, including port status, traffic statistics, etc.

[0043] As an optional embodiment, the insulation resistance tester 1302 can measure insulation resistance from a few ohms to several gigaohms, and is suitable for different types of electrical control devices. It is equipped with a variety of test voltage gears (such as 50V, 100V, 250V, 500V, 1000V), and the appropriate test voltage can be selected according to the requirements of the object being tested. The insulation resistance tester 1302 supports automatic test mode, can continuously perform multiple measurements within a set time interval, and upload the results to the main controller board 1201 for analysis. It can also be used in conjunction with the matrix switch board 1205 to achieve rapid testing of multi-point insulation resistance. The insulation resistance tester 1302 has built-in overvoltage protection and short-circuit protection functions to prevent damage to equipment and personnel during the test.

[0044] As an optional embodiment, the main power supply 1303 simulates the main power supply system of the aircraft and provides a stable direct current output. Common output voltages include 28V DC, 270V DC, etc. It has adjustable output voltage and current limiting functions, and can adjust power supply parameters according to different models of electrical control devices. The main power supply 1303 has a high power output capacity (such as 500W or higher) and can meet the needs of large current loads. It is also equipped with overload protection and short-circuit protection functions to ensure that the equipment will not be damaged under abnormal circumstances. The main power supply 1303 can be remotely controlled by the main controller board 1201 through the Ethernet switch 1301, supports operations such as start / stop, voltage / current setting, and realizes an automated test process.

[0045] As an optional embodiment, the ignition battery power supply 1304 simulates the ignition battery of the aircraft and provides instantaneous high current output for testing the performance of the electrical control device under ignition conditions. The common output voltage is 28V DC, the output current can reach hundreds of amperes, and the duration is usually a few milliseconds to a few seconds. The ignition battery power supply 1304 is equipped with a high-performance capacitor bank that can release a large amount of energy in a short time to simulate the real ignition process. It also has a charging and discharging management system to ensure the long-term stable operation of the power supply. The ignition battery power supply 1304 can also be remotely controlled by the main controller board 1201 through the Ethernet switch 1301, supports operations such as start / stop and current setting, and realizes an automated test process.

[0046] It should be noted that insulation resistance refers to the resistance value between two conductive parts, which is used to measure the insulation performance of electrical equipment. High insulation resistance indicates good insulation quality, which can effectively prevent current leakage and electrical failure. Automatic test mode is a working mode of a test device that can automatically perform multiple measurements at a set time interval and upload the results to the control system. This method reduces manual intervention and improves test efficiency and accuracy. High-performance capacitor banks are energy storage devices composed of multiple high-capacity capacitors that can release a large amount of energy in a short period of time. They are often used in application scenarios that require instantaneous high current output, such as ignition systems and pulse power supplies.

[0047] Furthermore, if Figure 2 As shown, the electrical signal adapter 14 includes a power supply function board 1401, an isolated output function board 1402, an isolated input function board 1403, an pyrotechnic simulation function board 1404, a signal relay function board 1405, a power relay function board 1406 and an insulating relay function board 1407; wherein the electrical signal adapter 14 is respectively connected to the computer system 12 and the Ethernet control system 13 through a cable bundle. Specifically, the power supply function board 1401 is used to convert the main power supply into the voltage required by each module inside the automated test equipment; the isolated output function board 1402 is used to electrically isolate the output signal of the automated test equipment from the electrical control device and then output it; the isolated input function board 1403 is used to electrically isolate the input signal that the automated test equipment needs to detect from the electrical control device and then input it; the pyrotechnics simulation function board 1404 is used to simulate the working characteristics of pyrotechnics in the aircraft; the signal relay function board 1405 is used to generate the small current passive signal required by the automated test equipment; the power relay function board 1406 is used to generate the large current passive signal required by the automated test equipment; the insulation relay function board 1407 is used to switch the insulation resistance contacts required to detect the automated test equipment, and cooperate with the insulation resistance tester to test the insulation resistance between multiple contacts of the electrical control device.

[0048] As an optional embodiment, the power function board 1401 adopts a high-efficiency DC-DC converter, which can convert the main power supply (such as 28V DC or 270V DC) into a variety of voltages (such as 5V, 12V, 24V, etc.) required by each module inside the automated test equipment. It supports multiple outputs, and each output can be independently adjusted and monitored. The power function board 1401 has built-in voltage stabilization circuits and filtering circuits to ensure the stability and purity of the output voltage and reduce noise interference. It also has overvoltage protection, overcurrent protection and short-circuit protection functions to ensure that other modules will not be damaged under abnormal circumstances. The power function board 1401 can be remotely monitored and controlled by the main controller board 1201 through an Ethernet control system, obtain the voltage output status in real time, and adjust the output parameters as needed.

[0049] As an optional embodiment, the isolated output function board 1402 uses an optical coupler or a magnetic coupler to achieve electrical isolation, isolating the output signal of the automated test equipment from the electrical control device. It can withstand an isolation voltage of up to several thousand volts to ensure electrical safety between the two. The isolated output function board 1402 supports a variety of digital signal formats (such as TTL, RS-232, RS-485, etc.), and has high-speed signal transmission capabilities to ensure signal integrity and real-time performance. Some isolated output function boards 1402 support two-way communication, which can not only output control signals, but also receive feedback signals, enhancing the interactivity of the system.

[0050] As an optional embodiment, the isolated input function board 1403 also uses an optical coupler or a magnetic coupler to achieve electrical isolation, isolating the input signal that the automated test equipment needs to detect from the electrical control device. It can withstand an isolation voltage of up to several thousand volts to ensure electrical safety between the two. The isolated input function board 1403 supports the acquisition of a variety of analog and digital signals, including physical quantities such as voltage, current, and temperature. It has a high-precision ADC (analog-to-digital converter) that can convert analog signals into digital signals for processing by the main controller board 1201. The isolated input function board 1403 has built-in filtering and amplification circuits to ensure that the collected signals have a high signal-to-noise ratio and high resolution.

[0051] As an optional embodiment, the pyrotechnic simulation function board 1404 is used to simulate the working characteristics of pyrotechnics in aircraft, such as ignition and explosion. It simulates the startup and working process of pyrotechnics by precisely controlling the current and voltage, and verifies the response performance of the electrical control device. The pyrotechnic simulation function board 1404 has multiple safety protection mechanisms, such as overcurrent protection, overtemperature protection and short-circuit protection, to ensure that no damage is caused to equipment and personnel during the simulation process. The pyrotechnic simulation function board 1404 can be programmed and controlled through the main controller board 1201, and different simulation parameters, such as current intensity, duration, etc., can be set to meet the testing requirements of different types of pyrotechnics.

[0052] As an optional embodiment, the signal relay function board 1405 is used to generate a small current passive signal (usually less than 0.5A), which is suitable for controlling low-power devices or sensors. It uses a solid-state relay (SSR) or a mechanical relay (MR) to ensure reliable transmission of signals. The signal relay function board 1405 supports high-speed switching and can complete the on-off operation of the signal within milliseconds, which is suitable for fast-response application scenarios. The signal relay function board 1405 adopts a low-power design, which reduces energy consumption and extends the service life of the equipment.

[0053] As an optional embodiment, the power relay function board 1406 is used to generate a high current passive signal (usually greater than or equal to 0.5A), which is suitable for controlling high power devices or loads. It uses a high current relay or contactor to ensure the stable transmission of high current signals. The power relay function board 1406 has high voltage resistance characteristics and can withstand voltages of up to hundreds of volts, which is suitable for high voltage application scenarios. The power relay function board 1406 adopts an efficient heat dissipation design, such as a heat sink or a fan, to ensure good heat dissipation performance when working at high currents and extend the service life of the equipment.

[0054] As an optional embodiment, the insulation relay function board 1407 is used to switch the insulation resistance contacts required to be detected by the automated test equipment, and cooperate with the insulation resistance tester 1302 to test the insulation resistance between multiple contacts of the electrical control device. It uses high insulation relays to ensure electrical isolation during the switching process. The insulation relay function board 1407 supports contact switching of multiple channels, and can test the insulation resistance between multiple contacts at the same time, thereby improving the test efficiency. The insulation relay function board 1407 can be programmed and controlled through the main controller board 1201 to realize an automated insulation resistance test process, reducing manual intervention.

[0055] Furthermore, if Figure 2 As shown, the external interface 15 of the special test equipment includes a large current test interface 1501 and an insulation resistance test interface 1502; wherein the external interface 15 of the special test equipment is connected to the electrical signal adapter 14 through a cable bundle. Specifically, the large current test interface 1501 is used to connect an external electrical control device to verify the large current control performance of the electrical control device; the insulation resistance test interface 1502 is used to connect an external electrical control device to test the insulation resistance of the electrical control device.

[0056] As an optional embodiment, the high current test interface 1501 uses a high current resistance, low resistance connector, such as an aviation plug, to ensure that no excessive voltage drop and heat are generated during the high current transmission process. The interface is equipped with a copper bus or a large cross-section wire to carry a large current of hundreds of amperes. The high current test interface 1501 has built-in fuses and thermistors for overcurrent protection and temperature monitoring. When the current exceeds the set threshold or the temperature is too high, the fuse will automatically cut off the circuit to prevent damage to the equipment. The thermistor monitors the interface temperature in real time to ensure that it works within a safe range. The high current test interface 1501 can be remotely controlled through the main controller board 1201, supporting operations such as start / stop and current setting. It can also be used in conjunction with the power relay function board 1406 to achieve precise control and fast switching of high current signals. When testing high current loads (such as motors and generators) in the electrical system of an aircraft, the high current test interface 1501 can simulate actual working conditions and verify the performance of the electrical control device under high current conditions. For example, it can test the motor's starting current, steady-state current, and overload capacity to ensure it meets design requirements.

[0057] As an optional embodiment, the insulation resistance test interface 1502 uses a high-insulation, low-leakage connector, such as a BNC connector or an SMA connector, to ensure that no leakage current is generated during the high-voltage test. The interface is equipped with high-voltage insulation materials, such as ceramics or polytetrafluoroethylene (PTFE), to withstand test voltages up to several thousand volts. The insulation resistance test interface 1502 supports multi-point testing. By working with the insulation relay function board 1407, the insulation resistance test between multiple contacts of the electrical control device can be realized. The insulation resistance between each contact can be measured separately to ensure full coverage. The insulation resistance test interface 1502 can be programmed and controlled by the main controller board 1201 to realize an automated insulation resistance test process. The user only needs to set the test parameters, and the system will automatically complete all test steps and upload the results to the main controller board 1201 for analysis. When testing the insulation performance of the aircraft electrical system, the insulation resistance test interface 1502 can verify the insulation between the components of the electrical control device. For example, it can test the insulation resistance between the power line and the ground, and the insulation resistance between the signal lines to ensure the safety of the electrical system.

[0058] Furthermore, if Figure 2 As shown, the external interface 15 of the special test equipment also includes a full-function test interface 1503; wherein: the full-function test interface 1503 is used to connect an external electrical control device to realize other functions and performance verification of the electrical control device in addition to large current control performance verification and insulation resistance testing; wherein, other functions and performances include at least one of the following: system conduction characteristics, static resistance, signal receiving function, signal output function, energy efficiency and power consumption, and communication function.

[0059] As an optional embodiment, the full-function test interface 1503 is connected to each port of the electrical control device through a multi-pin aviation plug or a special connector to ensure that all signal lines and power lines can be reliably connected. The main controller board 1201 sends a control signal through the digital IO board 1202 to activate each circuit node inside the electrical control device, and detects the voltage or current response of each node through the isolated input function board 1403. The system records the conduction state of each node and generates a detailed conduction characteristic report. When testing the conduction characteristics of the aircraft electrical system, the full-function test interface 1503 can verify whether each relay, switch and sensor can work properly to ensure the connectivity and reliability of the electrical system.

[0060] As an optional embodiment, the full-function test interface 1503 measures the static resistance of each resistance element of the electrical control device through the multimeter board 1204. The multimeter board 1204 has an automatic range switching function and can perform accurate measurements within different resistance ranges. The measured resistance value is transmitted to the main controller board 1201 through the bus interface for analysis and storage. The system determines whether the resistance is within the normal range based on the preset standard value and generates a test report. When testing the static resistance of the aircraft electrical system, the full-function test interface 1503 can verify whether the resistance value of the resistance element meets the design requirements to ensure the stability and reliability of the circuit.

[0061] As an optional embodiment, the full-function test interface 1503 generates various types of analog signals (such as pulse signals, sine wave signals, etc.) through the signal relay function board 1405, and sends them to the input port of the electrical control device. After receiving these signals, the electrical control device will generate corresponding output signals or actions. The full-function test interface 1503 detects the response of the electrical control device through the isolation input function board 1403 to verify whether its signal receiving function is normal. When testing the signal receiving function of the aircraft communication module, the full-function test interface 1503 can simulate different communication signals to verify whether the module can correctly receive and process these signals.

[0062] As an optional embodiment, the full-function test interface 1503 sends a control instruction to the electrical control device through the digital IO board 1202 to activate its internal signal output function. The electrical control device will generate a corresponding output signal (such as a digital signal, an analog signal, etc.) according to the instruction. The full-function test interface 1503 detects the output signal of the electrical control device through the isolation input function board 1403 to verify whether it meets expectations. The system records the status of each output signal and generates a detailed test report. When testing the signal output function of the aircraft electrical system, the full-function test interface 1503 can verify whether each sensor and actuator can output signals correctly to ensure the normal operation of the system.

[0063] As an optional embodiment, the full-function test interface 1503 measures the voltage and current of the input and output ports of the electrical control device through the multimeter board 1204 to calculate its actual power consumption. The multimeter board 1204 has high-precision measurement capabilities and can perform accurate measurements under different load conditions. The main controller board 1201 calculates the energy efficiency ratio of the electrical control device based on the measured voltage and current values, and compares it with the preset standard values ​​to generate an energy efficiency evaluation report. When testing the energy efficiency and power consumption of the aircraft electrical system, the full-function test interface 1503 can verify the power consumption of the system in different working modes to ensure that it meets the energy-saving design requirements.

[0064] As an optional embodiment, the full-function test interface 1503 simulates various communication protocols (such as RS-232, RS-485, CAN, Ethernet, etc.) through the communication board 1206, and communicates with the communication port of the electrical control device. The communication board 1206 supports multiple communication rates and data formats, and can simulate a real communication environment. After the electrical control device receives the data sent by the communication board 1206, it will generate a corresponding response. The full-function test interface 1503 detects the response of the electrical control device through the communication board 1206 to verify whether its communication function is normal. When testing the communication function of the aircraft communication module, the full-function test interface 1503 can simulate the communication link between the ground station and the aircraft to verify the stability and reliability of data transmission.

[0065] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0066] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0067] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0068] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0069] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0070] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0071] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. An automated testing device for an electrical control device, characterized in that: include: Human-computer interaction equipment, used to input test instructions, set test parameters and view test results; A computer system connected to the human-computer interaction device, used to control multiple function boards according to a preset control program, and to analyze, process, store and display data from the function boards in real time, and to control the working state of the device connected to the network interface; An Ethernet control system connected to the computer system for extending a network interface, detecting the insulation resistance of the electrical control device through a device connected to the network interface, and providing electrical energy to the electrical control device; An electrical signal adapter, connected to the computer system and the Ethernet control system respectively, for realizing power conversion, signal isolation, characteristic simulation, relay control and insulation resistance testing; The dedicated test equipment has an external interface, which is connected to the electrical signal adapter and is used for externally connecting the electrical control device to realize large current control performance verification and insulation resistance test of the electrical control device.

2. The automated testing equipment according to claim 1, characterized in that: The computer system comprises a main controller board, a control digital IO board, an ADC board, a multimeter board, a matrix switch board and a communication board; wherein communication and control between the main controller board and the control digital IO board, the ADC board, the multimeter board, the matrix switch board and the communication board are realized through a bus interface.

3. The automated testing equipment according to claim 2, characterized in that: The main controller board is used to control the control digital IO board, the ADC board, the multimeter board, the matrix switch board and the communication board according to a preset control program, and to analyze, process, store and display the test data in real time; The digital IO board is used to realize the output control of the digital quantity signal of each functional board in the electrical signal adapter, as well as the input reading back of the digital quantity signal, and transmit the digital quantity signal to the main controller board for processing; An ADC board, used to detect the input of analog signals of each functional board in the electrical signal adapter, and transmit the analog signals to the main controller board for processing; A multimeter board, used for detecting the resistance value and the voltage value in the electrical control device, and transmitting the resistance value and the voltage value to the main controller board for processing; A matrix switch board, used for cooperating with the multimeter board through an internal matrix circuit to realize connection switching between different signal ports to be tested of the detection port of the multimeter board; The communication board is used to test the communication function of the electrical control device.

4. The automated testing equipment according to claim 1, characterized in that: The Ethernet control system includes an Ethernet switch, an insulation resistance tester, a main power supply, and an ignition battery power supply; wherein the Ethernet control system is connected to the computer system via a network cable.

5. The automated testing equipment according to claim 4, characterized in that: The Ethernet switch is used to expand the number of network interfaces; The insulation resistance tester is used to detect the insulation resistance that needs to be tested in the electrical control device; The main power supply is used to simulate the main power supply of the aircraft to provide power to the electrical control device; The ignition battery power supply is used to simulate the ignition battery of the aircraft to provide electrical energy to the electrical control device.

6. The automated testing equipment according to claim 1, characterized in that: The electrical signal adapter includes a power supply function board, an isolated output function board, an isolated input function board, an pyrotechnic simulation function board, a signal relay function board, a power relay function board and an insulating relay function board; wherein the electrical signal adapter is connected to the computer system and the Ethernet control system respectively through a cable bundle.

7. The automated testing equipment according to claim 6, characterized in that: The power function board is used to convert the main power supply into the voltage required by each module inside the automated test equipment; The isolated output function board is used to electrically isolate the output signal of the automated test equipment from the electrical control device and then output it; The isolated input function board is used to electrically isolate the input signal to be detected by the automated test equipment from the electrical control device before inputting it; The pyrotechnic device simulation function board is used to simulate the working characteristics of pyrotechnic devices in an aircraft; The signal relay function board is used to realize the generation of the small current passive signal required by the automated testing equipment; The power relay function board is used to realize the generation of the high current passive signal required by the automated test equipment; The insulating relay function board is used to switch the insulation resistance contacts required for the automated testing equipment, and cooperate with the insulation resistance tester to test the insulation resistance between multiple contacts of the electrical control device.

8. The automated testing equipment according to claim 1, characterized in that: The external interface of the dedicated test equipment includes a high current test interface and an insulation resistance test interface; wherein the external interface of the dedicated test equipment is connected to the electrical signal adapter through a cable bundle.

9. The automated testing equipment according to claim 8, characterized in that: The high current test interface is used to connect the electrical control device to verify the high current control performance of the electrical control device; The insulation resistance test interface is used to connect the electrical control device externally to implement insulation resistance testing of the electrical control device.

10. The automated testing equipment according to any one of claims 1 to 9, characterized in that: The external interface of the dedicated test equipment also includes a full-function test interface; wherein: The full-function test interface is used to externally connect the electrical control device to realize other function and performance verification of the electrical control device in addition to large current control performance verification and insulation resistance test; wherein, the other functions and performances include at least one of the following: system conduction characteristics, static resistance, signal receiving function, signal output function, energy efficiency and power consumption, and communication function.

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