Automatic testing method for large-size BCM of automobile

Abstract

The invention discloses an automatic testing method for a large-size BCM of an automobile. An automatic testing device is provided with a CAN communication module, a signal input module, and a signal output module. The automatic testing device is connected with a display, and the CAN communication module is connected with a CAN interface of the BCM. The signal input module is connected with a signal output pint of the BCM, and the signal output module is connected with a signal input pin of the BCM. After the power-on of the BCM, the automatic testing device detects whether the CAN communication is normal or not, and notifies the BCM to enter into an input testing state. The automatic testing device transmits an effective signal to the signal input pin, and the BCM just judges whether the signal is correct or not. The BCM feeds back the result of judgment whether the signal is correct or not to the automatic testing device, and the automatic testing device outputs the testing result to the display. The BCM controls the signal output pin to output the effective signal, and the automatic testing device receives the effective signal, judges whether the output signal is correct or not and outputs the testing result to the display. The method improves the detection efficiency and utilization rate of equipment, and guarantees the accuracy.

Description

technical field [0001] The invention relates to a BCM detection method, in particular to a large-scale BCM automatic test method for automobiles. Background technique [0002] With the development of the automobile industry, higher requirements are placed on the safety and reliability of automobiles. There are more and more nodes and connections on the BCM, the core control device of the car, and the test becomes more complicated and time-consuming. Especially for the test of large BCM, its quality and safety are getting more and more attention. [0003] At present, small companies mostly use manual testing. During the testing process, people manually operate the testing device and look at instruments, indicators and indicator lights with their eyes. The manual testing method is time-consuming, the accuracy rate is poor, the quality cannot be guaranteed, and the requirements for the proficiency of personnel are also high. At present, large companies mostly use computer aut...

AI Technical Summary

Problems solved by technology

Compared with manual testing, the accuracy rate has been improved, and the time has been reduced a lot, but it still takes a long time (a 120-pin BCM test takes 7 minutes and 35 seconds)

Low equipment and labor utilization

[0004] Existing testing methods and equipment require testers to be very familiar with product performance and to be able to operate test equipment very skillfully. The requirements for people are relatively high, the test time is relatively long, the accuracy rate cannot be guaranteed, and the utilization rate of equipment is low.

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