Offline detection device of body control module product based on CAN bus, and test method

Abstract

The invention provides an offline detection device of a body control module (BCM) product based on a CAN bus, and a test method. The detection device comprises a programmed power supply, a PCB test board, a test clamp, a load box, a CAN communication tool, a host computer and a load module. According to the device, the university is high, the design of a PCB test board is adopted, the establishment cost of the device can be greatly reduced without adoption of a commercial test board, the offline detection device can perform repeated use, test personnel does not need to participate in operationin a test process, test software of the host computer performs programming modification on a test sequence according to the product difference, the test time is reduced, input and output signals of the tested BCM are automatically tested and determined through the test device, man-made errors are reduced, and the test accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of body controllers for automotive electronic components, and in particular relates to a CAN bus-based body controller product off-line detection equipment and testing method Background technique [0002] The body controller (BCM) has become an essential part of the car, which can reduce the use of on-board relays, effectively control the car's electrical appliances, and the driver can control the car's internal and external lighting systems, central locking system, Front and rear wiper systems, glass sunroof systems, rearview mirror systems, etc., BCM integrates CAN / LIN bus network control. Off-line inspection is an important link to ensure the quality of the body controller before loading. At present, the use of CAN data communication to test the body controller has become the main trend in the market. Based on the diagnostic service of BCM products, the input and output of the body controller are controll...

AI Technical Summary

Problems solved by technology

Off-line inspection is an important link to ensure the quality of the body controller before loading. At present, the use of CAN data communication to test the body controller has become the main trend in the market. Based on the diagnostic service of BCM products, the input and output of the body controller are controlled through IO Control It is the most common test method. Combining computer-based automated testing improves the efficiency of offline testing. At present, Agilent’s test boards, NI’s boards, and VT’s test boards are assisted by a series of digital and communication test boards for automated testing. High production cost of boards and offline testing equipment

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