ECU (Electronic Control Unit) actuator control signal fault injection device for engine HILS (Hardware-In-the-Loop Simulation) system

Abstract

The invention discloses an ECU (Electronic Control Unit) actuator control signal fault injection device for an engine HILS (Hardware-In-the-Loop Simulation) system, which comprises an upper computer, an actuator control signal input port, an actuator control signal output port, a miniature relay module, a singlechip minimum system module and an RS485 communication module. The actuator control signal output port is connected with the miniature relay module; the miniature relay module is connected with the actuator control signal input port; the singlechip minimum system module is connected with the miniature relay module; the RS485 communication module is connected with the singlechip minimum system module; the other end of the RS485 communication module is connected with the upper computer; the upper computer is used for sending a user-defined message to the singlechip minimum system module by a level conversion circuit of the RS485 module; and the singlechip minimum system module is used for outputting a state required for implementing a control signal to the miniature relay module according to a fault code in the message after completing message receiving check response. The device is used for carrying out common fault injection on an engine ECU and has an overcurrent protection function.

Description

technical field [0001] The invention relates to electronic product testing technology, in particular to an ECU actuator control 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 the V...

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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