A space power distribution product automatic testing method and device based on LabView

Abstract

The application discloses a kind of based on LabView's aerospace power distribution product automatic testing method and device, based on the test device built and the test method constructed, realize aerospace power distribution product automation test.The hardware of test device is mainly composed of industrial computer, measurement and control board card, test tooling, load box, program-controlled DC power supply etc.;Test method includes based on test device and realizes the automatic test of each test item with the information interaction of power distribution product completion.This test device and method of the application are general, simple, reduce test cost, improve test efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of aerospace power distribution product testing technology, and in particular to an automatic testing method and apparatus for aerospace power distribution products based on LabVIEW. Background Technology

[0002] Power distribution products controlled by MOSFETs are a major component of aerospace equipment systems. Their function is to receive commands from the main control console, control the MOSFETs to supply and cut off power to the system's equipment, and collect data on the voltage and current of the power distribution branches, their power supply and cut-off status, and the status of control commands. After processing, these data are sent back to the main control console. To ensure the quality of power distribution products, functional testing is crucial, both during product delivery and the design and development phases.

[0003] Currently, relying solely on manual testing is not only complex and cumbersome in its wiring, but also prone to human error, increasing testing risks. After testing, manual recording of data for each item and determination of pass / fail status are required, significantly reducing testing efficiency and reliability, and lacking real-time data traceability capabilities. Traditional testing methods can no longer meet the testing needs of new power distribution products.

[0004] Therefore, in order to meet the requirements of high quality, low cost, short cycle and large quantity delivery of aerospace power distribution products, it is urgent to develop new automatic testing methods and devices for aerospace power distribution products. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide an automatic testing method and apparatus for aerospace power distribution products based on LabVIEW, aiming to realize automated testing of aerospace power distribution products, improve the versatility and flexibility of testing, ensure the reliability and safety of testing, and standardize the management of test data.

[0006] To achieve the above objectives, according to a first aspect of the present invention, an automatic testing device for aerospace power distribution products based on LabVIEW is provided, comprising an industrial control computer, a measurement and control board, a test fixture, a load box, a programmable DC power supply, and a software system: wherein, The industrial control computer is configured to connect to the measurement and control board and run the software system; The test fixture is configured to connect the aerospace power distribution product to be tested to the test and control board, the load box, and the programmable DC power supply. The measurement and control board is configured to interact with the aerospace power distribution product during automatic testing, including receiving test data from the aerospace power distribution product; The load cell is configured to provide a simulated load to the aerospace power distribution product through the test fixture; The programmable DC power supply is configured to supply power to the power distribution product through the test fixture; The software system is configured to test the aerospace power distribution product on the industrial control computer using LabVIEW. It includes a test project management module, a test execution module, and a test data management module. The test project management module is used to configure test projects. The test execution module is used to drive the measurement and control board to perform tests according to the test projects. The test data management module is used to store and analyze the test data of the aerospace power distribution product.

[0007] Furthermore, the measurement and control board includes a control board and a test board. The control board is inserted into the backplane of the industrial computer via a PXI interface and controls and manages the industrial computer. The test board is inserted into the backplane via a CPCI interface, and the control board communicates with the test board via a bus on the backplane.

[0008] Furthermore, the test board includes one or more of the following: CAN bus communication board, serial communication board, 1553B communication board, double-pole double-throw switch module board, oscilloscope board, and digital multimeter board.

[0009] Furthermore, the test fixture includes an interface fixture and a fixture cable; the interface fixture provides a matching universal interface for the dedicated interface of the aerospace power distribution product; the fixture cable is a universal connecting cable used to connect the universal interface of the interface fixture to the measurement and control test board, the load box and the programmable DC power supply.

[0010] Furthermore, the load cell provides multiple adjustable loads; the programmable DC power supply includes controlled DC power supplies at various power levels and is communicatively connected to the industrial computer.

[0011] According to a second aspect of the present invention, an automatic testing method for aerospace power distribution products based on LabVIEW is provided, which is used in the apparatus of the first aspect of the present invention, comprising: The steps for deploying the automatic testing device include: selecting matching control boards based on the aerospace power distribution products, inserting the selected control boards into the industrial computer, and connecting the control boards to the aerospace power distribution products through the testing fixture; The steps for configuring and executing test items include: determining test content based on the functions of the aerospace power distribution product; configuring test items in the test item management module based on the test content; driving the measurement and control board to interact with the aerospace power distribution product according to the configured test items; and storing test data management module for the aerospace power distribution product. The test items include control command testing, communication testing, power distribution branch voltage and current accuracy testing, MOSFET performance testing, and power supply bias testing. Data analysis step; in this step, the test data management module completes data analysis based on the stored test data.

[0012] Furthermore, the control command test includes simulated live control command test and non-live control command test.

[0013] Furthermore, the communication tests include 1553B communication tests, CAN communication tests, and serial communication tests.

[0014] Furthermore, the voltage and current accuracy test of the power distribution branch is achieved through the following steps: The voltage and current values ​​collected by the internal AD chip of the aerospace power distribution product are used as the collected values; Collect actual voltage and current values ​​as measured values; The accuracy value is obtained by comparing the difference between the collected value and the measured value with the measured value.

[0015] Furthermore, the MOSFET performance test includes turn-on and turn-off time testing, on-state voltage drop testing, and leakage current testing.

[0016] The embodiments of the present invention have at least one of the following advantages or beneficial effects: The LabVIEW-based automatic testing method and apparatus for aerospace power distribution products of this invention, through the collaborative design of hardware and software, constructs a highly automated, versatile, comprehensive testing solution for aerospace power distribution products with standardized data management. It effectively solves the problems of low testing efficiency, poor accuracy, insufficient versatility, and difficult data management in the prior art. It has significant technological advancements and practical value for ensuring the quality of aerospace power distribution products, shortening delivery cycles, and reducing testing costs.

[0017] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0018] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0019] Figure 1 This is a schematic diagram of the hardware layout of an automatic testing device for aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention. Figure 2This is a schematic diagram of the hardware topology of an automatic testing device for aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the software system in the automatic testing and transposition of aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention.

[0020] Figure 4 This is a flowchart illustrating an embodiment of the automatic testing method for aerospace power distribution products based on LabVIEW according to the present invention. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0022] In a specific embodiment of the present invention, an automatic testing method and device for aerospace power distribution equipment controlled by MOS transistors is provided based on LabVIEW, realizing fully automated testing from hardware topology, testing methods to data management.

[0023] Figure 1 This is a schematic diagram of the hardware layout of the LabVIEW-based automatic testing device for aerospace power distribution products according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the hardware topology of the automatic testing device for aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the software system in the automatic testing and transposition of aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention.

[0024] like Figure 1 and Figure 2 As shown in the figure, an automatic testing device for aerospace power distribution products based on LabVIEW in an embodiment of the present invention includes an industrial control computer, a measurement and control board, a test fixture, a load box, a programmable DC power supply, and a software system.

[0025] Specifically, in this embodiment and some embodiments of the present invention, the industrial control computer is configured to connect to the measurement and control board and run the software system; the test fixture is configured to connect the aerospace power distribution product to be tested to the measurement and control board, the load box, and the programmable DC power supply; the measurement and control board is configured to interact with the aerospace power distribution product during automatic testing, including receiving test data from the aerospace power distribution product; the load box is configured to provide a simulated load to the aerospace power distribution product through the test fixture; the programmable DC power supply is configured to supply power to the power distribution product through the test fixture; the software... The system is configured to test the aerospace power distribution product on the industrial control computer using LabVIEW. It includes a test project management module, a test execution module, and a test data management module. The test project management module is used to configure test projects, i.e., to create test projects based on the functions of the aerospace power distribution product. The test execution module is used to drive the measurement and control board to perform tests according to the test projects, and to receive test data from the aerospace power distribution product from the measurement and control board. The test data management module is used to store the test data from the test execution module, analyze the test data of the aerospace power distribution product, and further, generate test reports.

[0026] Furthermore, in this embodiment and some embodiments of the present invention, the measurement and control board includes a control board and a test board. The control board is inserted into the backplane of the industrial computer through a PXI interface and controls and manages the industrial computer. The test board is inserted into the backplane through a CPCI interface, and the control board communicates with the test board through a bus on the backplane.

[0027] Furthermore, in this embodiment and some embodiments of the present invention, the test board includes, but is not limited to, one or more of the following: CAN bus communication board, serial communication board, 1553B communication board, double-pole double-throw switch module board, oscilloscope board, and digital multimeter board.

[0028] Specifically, in this embodiment and some embodiments of the present invention, the control board is a zero-slot controller board, which is inserted into the industrial computer through a PXI interface to realize the control and management of the industrial computer; the test board is one or more, all of which are inserted into the industrial computer through a CPCI interface, and can be selected according to the functional test items of the aerospace power distribution products, inserting the test board that matches the test item.

[0029] More specifically, in this embodiment and some embodiments of the present invention, the zero-slot controller board functions as a main controller, connecting multiple test boards for functional testing via a backplane bus to achieve collaborative testing. The CAN bus communication board enables signal transmission and data interaction between CAN bus devices; the serial communication board enables serial communication between devices using various serial communication protocols such as RS232, RS485, and RS422; the 1553B communication board enables communication with the 1553B of aerospace power distribution products; the double-pole double-throw switch module board controls the opening and closing of controlled objects during testing by controlling the on / off state of switches. These controlled objects include aerospace power distribution products and their internal control quantities, as well as the internal control quantities of other devices; the oscilloscope board acquires various analog and digital signals and converts them into visible waveforms; through data processing and analysis, signal and feature extraction can be achieved; the digital multimeter board acquires voltage and current signals, for example... A digital multimeter with a digit display and a basic accuracy of 0.001%.

[0030] Furthermore, in this embodiment and some embodiments of the present invention, the test fixture includes an interface fixture and a fixture cable; the interface fixture provides a matching universal interface for the dedicated interface of the aerospace power distribution product, that is, different fixtures are designed for different aerospace power distribution products to bring out the external interfaces required by various aerospace power distribution products; the fixture cable is a universal connecting cable used to connect the universal interface of the interface fixture to the measurement and control test board, the load box and the programmable DC power supply. It can be understood that the cable ports of the universal connecting cable all use universal matching connectors to achieve cable universality and facilitate wiring by test personnel.

[0031] Furthermore, in this embodiment and some embodiments of the present invention, the load box provides multiple adjustable loads, such as 18 adjustable loads from 0 to 5A, which can simulate the working conditions of aerospace power distribution products under load; the programmable DC power supply includes controlled DC power supplies of various power levels and is communicatively connected to the industrial control computer. The controlled DC power supply includes a high-power controllable DC power supply and a low-power controllable DC power supply. The high-power controllable DC power supply can support 18 5A loads working simultaneously, and the low-power controllable DC power supply can support 9 5A loads working simultaneously, which can be selected as needed.

[0032] Understandably, LabVIEW, as the most widely used virtual instrument development platform, is powerful and flexible in operation, and has been successfully applied in fields such as instrument control, signal processing, and data acquisition, allowing users to quickly integrate test systems according to their needs. Therefore, more specifically, in this embodiment and some embodiments of the present invention, the software system running on the industrial control computer is built based on LabVIEW.

[0033] Optionally, in this embodiment and some embodiments of the present invention, the automatic testing device for aerospace power distribution products based on LabVIEW further includes a display. The display is connected to an industrial control computer via a VGA data cable and is mainly used to display the testing interface for aerospace power distribution products developed based on LabVIEW. By clicking the relevant buttons for each test item, the relevant test process is executed, the test results are displayed, and timely prompts are given when abnormal situations occur.

[0034] Figure 3 This is a schematic diagram of the software system in the automatic testing and transposition of aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention. Figure 4 This is a flowchart illustrating an automatic testing method for aerospace power distribution products based on LabVIEW, according to an embodiment of the present invention. Figure 3 and Figure 4 As shown, in the automatic testing device for aerospace power distribution products based on LabVIEW in the embodiment of the present invention, an automatic testing method for aerospace power distribution products based on LabVIEW is implemented, specifically including steps S100 to S300.

[0035] Step S100, the step of deploying the automatic testing device; in this step, a matching measurement and control board is selected according to the aerospace power distribution product, the selected measurement and control board is inserted into the industrial control computer, and the measurement and control board is connected to the aerospace power distribution product through the testing fixture; Step S200 involves configuring and executing test items. In this step, the test content is determined based on the function of the aerospace power distribution product. Based on the test content, test items are configured in the test item management module. The test execution module drives the measurement and control board to interact with the aerospace power distribution product according to the configured test items. The test data management module is used to store the test data of the aerospace power distribution product. The test items include control command testing, communication testing, power distribution branch voltage and current accuracy testing, MOSFET performance testing, and power supply bias testing. Step S300, data analysis step; in this step, the test data management module completes data analysis based on the stored test data.

[0036] Specifically, in this embodiment and some embodiments of the present invention, the control command test includes energized control command test and de-energized control command test simulated using the double-pole double-throw switch module board.

[0037] Specifically, in this embodiment and some embodiments of the present invention, the communication test includes 1553B communication test, CAN communication test and serial communication test implemented based on the corresponding communication board.

[0038] Specifically, in this embodiment and some embodiments of the present invention, the voltage and current accuracy test of the power distribution branch is achieved through steps S210a to S210c: Step S210a: Obtain the voltage and current values ​​collected by the AD chip inside the aerospace power distribution product as the collected values; Step S210b: Collect the actual voltage and current values ​​as measured values; Step S210c: Obtain the accuracy value based on the ratio of the difference between the collected value and the measured value to the measured value.

[0039] Specifically, in this embodiment and some embodiments of the present invention, the MOSFET performance test includes turn-on and turn-off time testing using the oscilloscope board, and conduction voltage drop testing and leakage current testing using the digital multimeter board.

[0040] More specifically, in this embodiment and some embodiments of the present invention, the software system is implemented based on LabVIEW and includes a test project management module, a test execution module, and a test data management module. The test project management module, based on the functions of the aerospace power distribution products, compiles and formulates test projects and sends them to the test execution module. The test execution module constructs test procedures based on the test projects, executes the test procedures, sends control and setting instructions, and receives test results, sending them to the test data management module. The test data management module analyzes and judges the acquired data, generates test results, and stores them in ".xls" format to a specified path. The stored data files are named using a time series format for subsequent viewing and statistical analysis by staff.

[0041] Understandably, when aerospace power distribution products receive control commands from the main control console and perform control command testing, they employ a double-pole double-throw (DPDT) switch module board. Specifically, in this embodiment and some embodiments of the present invention, if the control command is a live control command, the voltage of the programmable DC power supply is set (less than 30V) according to the live control command, and the DPDT switch module board is controlled to provide the live control command to the aerospace power distribution products. If the control command is a non-live command, the DPDT switch module board is controlled to provide the non-live command to the aerospace power distribution products.

[0042] Specifically, in this embodiment and some embodiments of the present invention, the double-pole double-throw switch module board has 48 channels, which can simultaneously simulate multiple control commands sent by the main control console.

[0043] Specifically, in this embodiment and some embodiments of the present invention, communication testing includes 1553B communication, CAN communication, and serial communication. Generally, aerospace power distribution products are equipped with serial ports, 1553B, CAN, and other related circuits, supporting multiple communication methods. To test the communication function, communication is conducted between the aerospace power distribution product and a CAN bus communication board, serial communication board, and 1553B board. Commands are sent and received according to the software technical protocol of the aerospace power distribution product to check whether the received commands meet the requirements, thus completing information exchange. The CAN bus communication board supports 2-channel communication, the serial communication board supports 8-channel serial communication, and the 1553B board supports 2-channel communication. Through adapter cables, simultaneous communication testing of multiple aerospace power distribution products is supported.

[0044] Specifically, in this embodiment and some embodiments of the present invention, for the voltage and current accuracy test of the power distribution branch, the aerospace power distribution product uses its internal AD chip to collect the voltage and current of each power distribution branch, and uploads the collected results to the industrial control computer through serial communication; in order to test its collection accuracy, a serial communication board and a digital multimeter card are used to transmit the collection results to the industrial control computer. The industrial control computer uses the voltage and current collected by the aerospace power distribution product as the collected value, and the voltage and current collected by the digital multimeter board as the measured value, and calculates the voltage / current accuracy = (collected value - measured value) / measured value * 100%.

[0045] Specifically, in this embodiment and some embodiments of the present invention, the MOSFET performance testing includes turn-on / turn-off time testing, on-state voltage drop testing, and leakage current testing. The power distribution product controls the on / off switching of the power distribution branch by controlling the MOSFET. The turn-on / turn-off time testing uses an oscilloscope board to collect the time required for the MOSFET to return to 10%~90% of its steady-state voltage when it is turned on; the turn-off time is the time required for the MOSFET to return to 10%~90% of its steady-state voltage when it is turned off. The on-state voltage drop and leakage current testing use a serial communication board and a digital multimeter board. When the MOSFET is turned on, the voltage difference between the input and output terminals of the MOSFET is collected by the digital multimeter board; this is the on-state voltage drop. When the MOSFET is turned off, the current in the power distribution branch is collected by the digital multimeter board; this is the leakage current. The digital multimeter board uploads the test results to the industrial control computer.

[0046] The power supply bias test is generally performed at ±15% of the normal operating voltage. The programmable DC power supply can communicate with the industrial control computer via RS232 communication through a serial port board. To enable multi-product testing, the testing device is equipped with four power supplies: two high-power controllable DC power supplies and two low-power controllable DC power supplies. Independent control of the power supplies is achieved through four independent RS232 communication channels. When bias testing is required, the voltage and current values ​​of each power supply are set and changed, and the voltage and current of the power supplies are collected in real time to observe the power supply status. If overvoltage or overcurrent occurs, the power is cut off promptly to prevent damage to the products.

[0047] Compared with the prior art, the present invention has the following beneficial effects: (1) The embodiments of the present invention realize the full automation of the testing process, thereby improving testing efficiency and accuracy. This invention, through the construction of an integrated automated testing device and a LabVIEW-based software system, achieves full automation of the entire process, from test item configuration and test procedure execution to test data acquisition, analysis, and storage. Specifically, the test execution module automatically drives the control board to interact with the aerospace power distribution product under test, based on the items configured by the test item management module, completing various complex test tasks such as control command transmission, communication data exchange, voltage and current measurement, and MOSFET dynamic performance testing. The test data management module automatically stores and analyzes the data, generating test results. The entire process eliminates the need for manual operation, avoiding problems such as cumbersome wiring, operational errors, and data recording errors inherent in traditional manual testing. This significantly improves testing efficiency and the accuracy and consistency of test results, meeting the high-quality, high-volume delivery requirements of aerospace power distribution products.

[0048] (2) The embodiments of the present invention adopt modular and configurable measurement and control boards to enhance the system's versatility and flexibility. The measurement and control board in this invention adopts a modular design, including a control board inserted through a PXI interface and various functional test boards (such as CAN bus communication boards, serial communication boards, 1553B communication boards, double-pole double-throw switch modules, oscilloscope boards, digital multimeter boards, etc.) inserted through a CPCI interface. For aerospace power distribution products of different models, communication protocols, and testing requirements, testers can flexibly select and plug in the corresponding test boards according to actual needs, without replacing the entire test system. This "on-demand configuration" hardware architecture enables this invention to quickly adapt to various aerospace power distribution products, significantly improving the versatility and reusability of the test device, and reducing the construction cost and cycle time of the test system.

[0049] (3) The embodiments of the present invention use replaceable interface fixtures and universal cables to simplify the product adaptation process. The test fixture of this invention consists of an interface fixture and fixture cables. The interface fixture provides a universal interface matching the dedicated interfaces of different aerospace power distribution products. The fixture cables use universal connecting cables to connect the universal interface of the interface fixture to the measurement and control board, load box, and programmable DC power supply. When the model of the product under test changes, only the matching interface fixture needs to be replaced; there is no need to modify the core equipment such as the measurement and control board, load box, and power supply, nor is rewiring required. This design greatly simplifies the switching process between different products, reduces operational difficulty and the probability of errors, and further enhances the versatility and ease of use of this invention.

[0050] (4) The test items in the embodiments of the present invention are comprehensive, meeting the multi-dimensional test requirements of aerospace power distribution products. The method steps in this invention cover multiple dimensions, including control command testing (including energized and de-energized commands), communication testing (including various buses such as 1553B, CAN, and serial ports), voltage and current accuracy testing of power distribution branches, MOSFET performance testing (including turn-on and turn-off time, conduction voltage drop, and leakage current), and power supply bias testing. Specifically, the voltage and current accuracy testing achieves an objective assessment of the product's acquisition accuracy by simultaneously acquiring the product's internal AD acquisition values ​​(acquired values) and the board's measured values ​​(measured values). The MOSFET performance testing relies on professional measurement and control boards such as oscilloscope boards and digital multimeter boards to achieve precise measurement of dynamic parameters and weak leakage current. This comprehensive coverage of test items ensures complete verification of the functions and performance of aerospace power distribution products.

[0051] (5) The data management specifications of this invention facilitate traceability and quality analysis. The test data management module in this embodiment of the invention not only stores test data but also has data analysis capabilities, enabling analysis and judgment based on the stored test data. The test data is stored in a structured manner, facilitating subsequent retrieval, traceability, and statistical analysis. This provides reliable data support for product quality assessment, fault analysis, and process improvement, overcoming the shortcomings of traditional manual test data, which is fragmented and difficult to manage.

[0052] (6) The embodiments of the present invention ensure the safety of the testing process. This invention, through the communication connection between a programmable DC power supply and an industrial control computer, enables real-time monitoring of the power supply status during testing. In stages such as power supply bias testing, if abnormal conditions such as overvoltage or overcurrent are detected, protective measures can be taken in a timely manner to prevent damage to the product under test and the testing equipment, thereby improving the safety of the testing process.

[0053] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An automatic testing device for aerospace power distribution products based on LabVIEW, characterized in that, This includes industrial control computers, measurement and control boards, test fixtures, load banks, programmable DC power supplies, and software systems. The industrial control computer is configured to connect to the measurement and control board and run the software system; The test fixture is configured to connect the aerospace power distribution product to be tested to the test and control board, the load box, and the programmable DC power supply. The measurement and control board is configured to interact with the aerospace power distribution product during automatic testing, including receiving test data from the aerospace power distribution product; The load cell is configured to provide a simulated load to the aerospace power distribution product through the test fixture; The programmable DC power supply is configured to supply power to the power distribution product through the test fixture; The software system is configured to test the aerospace power distribution product on the industrial control computer using LabVIEW. It includes a test project management module, a test execution module, and a test data management module. The test project management module is used to configure test projects. The test execution module is used to drive the measurement and control board to perform tests according to the test projects. The test data management module is used to store and analyze the test data of the aerospace power distribution product.

2. The apparatus according to claim 1, characterized in that, The measurement and control board includes a control board and a test board. The control board is inserted into the backplane of the industrial computer via a PXI interface and controls and manages the industrial computer. The test board is inserted into the backplane via a CPCI interface. The control board communicates with the test board via a bus on the backplane.

3. The apparatus according to claim 2, characterized in that, The test board includes one or more of the following: CAN bus communication board, serial communication board, 1553B communication board, double-pole double-throw switch module board, oscilloscope board, and digital multimeter board.

4. The apparatus according to claim 1, characterized in that, The test fixture includes an interface fixture and fixture cables; the interface fixture provides a matching universal interface for the dedicated interface of the aerospace power distribution product; The tooling cable is a general-purpose connecting cable used to connect the general-purpose interface of the interface tooling to the measurement and control test board, the load box and the programmable DC power supply.

5. The apparatus according to claim 1, characterized in that, The load cell provides multiple adjustable loads; the programmable DC power supply includes controlled DC power supplies at various power levels and is communicatively connected to the industrial computer.

6. An automatic testing method for aerospace power distribution products based on LabVIEW, used in the automatic testing device as described in any one of claims 1-5, characterized in that, include: The steps for deploying the automatic testing device include: selecting matching control boards based on the aerospace power distribution products, inserting the selected control boards into the industrial computer, and connecting the control boards to the aerospace power distribution products through the testing fixture; The steps for configuring and executing test items include: determining test content based on the functions of the aerospace power distribution product; configuring test items in the test item management module based on the test content; driving the measurement and control board to interact with the aerospace power distribution product according to the configured test items; and storing test data management module for the aerospace power distribution product. The test items include control command testing, communication testing, power distribution branch voltage and current accuracy testing, MOSFET performance testing, and power supply bias testing. Data analysis step; in this step, the test data management module completes data analysis based on the stored test data.

7. The method according to claim 6, characterized in that, The control command test includes simulated live control command test and non-live control command test.

8. The method according to claim 6, characterized in that, The communication tests include 1553B communication tests, CAN communication tests, and serial communication tests.

9. The method according to claim 6, characterized in that, The voltage and current accuracy test of the power distribution branch is achieved through the following steps: The voltage and current values ​​collected by the internal AD chip of the aerospace power distribution product are used as the collected values; Collect actual voltage and current values ​​as measured values; The accuracy value is obtained by comparing the difference between the collected value and the measured value with the measured value.

10. The method according to claim 6, characterized in that, The MOSFET performance test includes turn-on and turn-off time test, on-state voltage drop test, and leakage current test.

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