Recovery method and device for real vehicle fault injection test

Abstract

The embodiment of the present invention discloses a recovery method for a real vehicle fault injection test, which acquires several attitude parameters of the vehicle, evaluates whether the vehicle enters a dangerous state according to the several attitude parameters, and injects the fault into the equipment when the evaluation result is that the vehicle enters a dangerous state The fault injection path between the first device in the electronic and electrical system is closed, and the normal signal injection path between the second device in the electronic and electrical system is connected with the first device, so that the electronic and electrical system of the vehicle returns to the normal state, realizing the real During the vehicle fault injection test, when the vehicle enters a dangerous state, the normal connection of the system is automatically restored to prevent the loss of control of the vehicle and personal injury caused by the failure of the tester to restore the fault in time.

Description

technical field [0001] The invention relates to the technical field of testing, and more specifically, to a recovery method and device for a real vehicle fault injection test. Background technique [0002] Real vehicle fault injection testing is an important part of the vehicle generation process. The actual vehicle fault injection test is mainly the fault injection test of the electronic and electrical system of the car, and verifies the response of the electronic and electrical system when there is a fault by injecting electrical faults into the electronic and electrical system. Such as figure 1 Shown is a schematic diagram of the electronic and electrical system of a car, which consists of sensors, controllers and actuators. Such as figure 2 As shown, the traditional fault injection testing technology of electronic and electrical systems is to add a breakout box between the sensor and the controller. The structure of the breakout box is as follows image 3 As shown i...

AI Technical Summary

Problems solved by technology

[0003] However, in the traditional fault injection testing method of electronic and electrical systems, in the test engineering, if the tester finds a dangerous situation, the tester needs to manually restore the line to the normal connection to ensure that the vehicle electronic system obtains normal signals. Vehicle control to a stable state

This method of testing not only takes a long time, but also requires the tester to control the time of failure recovery or whether to recover based on his own experience, which requires a high level of experience for the tester; The failure caused the vehicle to lose control, causing serious personal injury to the test personnel

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