Electronic control unit (ECU) sensor signal fault injection device for engine hardware in-the-loop simulation (HILS) system

Abstract

The invention discloses an electronic control unit (ECU) sensor signal fault injection device for an engine hardware in-the-loop simulation (HILS) system. The device comprises an upper computer, a sensor signal input port, a sensor signal output port, a multi-channel selection module, a singlechip minimum system module and an RS485 communication module; the sensor signal output port is connected with the multi-channel selection module; the multi-channel selection module is connected with the sensor signal input port; the singlechip minimum system module is connected with the multi-channel selection module; one end of the RS485 communication module is connected with the singlechip minimum system module, and the other end of the RS485 communication module is connected with the upper computer; the upper computer sends a customized message to the singlechip minimum system module through a level conversion circuit of the RS485 module; and the singlechip minimum system module finishes message receiving check responses and then outputs control signals to the multi-channel selection module according to fault codes in the message to realize required fault injection. The device can realize the functions of common fault injection of the sensor signals of an engine ECU and the like.

Description

technical field [0001] The invention relates to electronic product testing technology, more specifically, relates to an ECU sensor signal fault injection device used in an engine hardware-in-the-loop simulation system. Background technique [0002] At present, the mainstream method of automotive electronic system development is a model-based modern development process - V-mode development process, which ensures that every step of the developer's development process can be verified in time. Before the product goes on the market, it is necessary to conduct a comprehensive and comprehensive test on the ECU, especially the test under faults and extreme conditions. Using the actual control object for the test is difficult to realize the realistic complex situation, and the implementation cost is high and the development cycle is long. In order to solve this problem, the development method of hardware in-the-loop simulation (Hardware In-the-Loop Simulation, HILS) is proposed in th...

AI Technical Summary

Problems solved by technology

Before the product goes on the market, it is necessary to conduct a comprehensive and comprehensive test on the ECU, especially the test under faults and extreme conditions. Using the actual control object for testing is difficult to achieve realistic and complex situations, and the implementation cost is high and the development cycle is long.

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