Bus fault injection system

Abstract

The invention provides a bus fault injection system, and is applied to the technical field of fault injection. The system comprises a control terminal and fault injection equipment; the control terminal sends a fault injection instruction to the fault injection equipment in a communication manner; a controller to be tested is connected with a vehicle-mounted CAN network through the fault injectionequipment, and the fault injection equipment obtains a real vehicle CAN message and a fault injection instruction transmitted by the vehicle-mounted CAN network, performs fault injection on the realvehicle CAN message according to the obtained fault injection instruction, and finally sends the obtained fault CAN message to the controller to be tested so as to complete the safety function test ofthe controller to be tested. In the system, the controller to be tested is connected with the vehicle-mounted CAN network through the fault injection equipment; the obtained fault CAN message is obtained by the fault injection equipment through fault injection based on the real vehicle CAN message corresponding to the actual driving condition of the vehicle, the actual test requirement can be met, and meanwhile, the credibility of the function safety verification result is improved.

Description

technical field [0001] The invention belongs to the technical field of fault injection, in particular to a bus fault injection system. Background technique [0002] Before the on-board controller is actually put into use, a functional safety test is required to verify whether the vehicle can still drive safely in a short period of time when the on-board controller fails or receives wrong information. In practical applications, most of the on-board controllers communicate through the CAN bus. Therefore, it is one of the effective test methods to verify the functional safety of the on-board controller through CAN bus fault injection. [0003] At present, most vehicle manufacturers adopt HIL (hardware-in-the-loop) technology when verifying the functional safety of on-board controllers, that is, the controller to be tested is installed in the HIL test system. The cabinet machine communicates with the controller under test in the way of building a virtual node, and at the same t...

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Problems solved by technology

[0004] However, when using HIL technology to test the controller to be tested, the virtual node constructed by the cabinet machine communicates with the controller to be tested through CAN communication and realizes fault injection. The virtual node cannot provide CAN messages of the real vehicle. Therefore, the controller to be tested The CAN message received by the controller cannot reflect the actual driving situation of the vehicle, which leads to low reliability of the functional safety verification results of the controller under test, and the existing HIL technology is difficult to meet the actual application requirements

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