AK protocol wheel speed sensor testing device and method based on hardware-in-the-loop architecture

Abstract

The invention discloses an AK protocol wheel speed sensor testing device and method based on a hardware-in-the-loop architecture. The design concept of the invention lies in the real-time simulation process of the ESC controller based on the hardware-in-the-loop architecture with convenient operation and high test accuracy. Simulate and verify the wheel speed fault of the AK protocol wheel speed sensor. Specifically, the fault signal to be tested is given by the upper computer, and the sensor simulation model built in the lower computer according to the actual working principle of the AK protocol wheel speed sensor is simulated and converted, and then the signal is simulated and transmitted through the test board, and then the established The AK protocol wheel speed sensor fault is injected into the ESC controller, so that the ESC controller can provide real-time feedback on the injected fault, so that the output fault of the AK protocol wheel speed sensor can be tested and verified. While improving the test accuracy and test convenience, the present invention can realize the fault injection of all the information of the AK protocol wheel speed sensor, thereby effectively improving the test coverage.

Description

technical field [0001] The invention relates to the technical field of vehicle wheel speed sensors, in particular to an AK protocol wheel speed sensor testing device and method based on a hardware-in-the-loop architecture. Background technique [0002] Wheel speed sensors have become a vital part of modern cars, and the wheel speed information they provide affects the safety of the car. Most of the traditional wheel speed sensors use the CAN communication protocol, and there are limitations in functional safety guidance. [0003] With the development of science and technology, AK protocol, as a new type of communication protocol, is beginning to be applied to wheel speed sensors. It can contain more sensor information closely related to wheel speed, which provides higher guidance for vehicle safety. For example, when the wheel speed direction signal is interfered, it may lead to misjudgment and misoperation of the electronic stability controller (ESC controller), and even c...

AI Technical Summary

Problems solved by technology

[0006] However, the amount of information acquired by the current test of the AK protocol wheel speed sensor through a special test instrument is very limited, and the test accuracy is often difficult to meet the high standard test requirements; at the same time, the convenience of the test operation itself is also poor. Due to the above factors , the existing test method is not conducive to evaluating the performance of the AK protocol wheel speed sensor

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