Electronic control network of automobile

Abstract

The invention provides an electronic control network of an automobile, which relates to an improvement of the conventional electronic control network of an automobile, is more accurate and is capable of solving network conflict and time delay of a vehicle-mounted CAN (Controller Area Network) bus. The electronic control network is designed with three electronic control units (ECUs) of the automobile, namely, an anti-locking brake system (ABS), an electronic power-assisted steering (EPS) unit and an automobile body control unit, and the ECUs form high, medium and low speed nodes of the CAN bus so as to form a control network; and the core of the electronic control network is a software module which is mainly composed of a system initializing module, a start self-checking module, a main control module, a data acquisition module, a data processing module, a reference automobile speed calculating module, a road surface identifying module, an automobile movement state identifying module, a control decision and execution mechanism acting module, a failure diagnosing module and a communication module, and the modules are uniformly dispatched in real time and distributed with operation time by the main control module according to a task management mechanism and exchange data and signals with one another.

Description

Technical field: [0001] The invention relates to the improvement of the automobile electronic control network. Background technique: [0002] In foreign countries, many international automobile companies have been actively committed to the research and application of automotive electronic network technology as early as the 1980s. Since 1992, Mercedes-Benz has used CAN technology in their high-level passenger cars. Since its birth, the CAN bus has been valued by the industry for its unique design ideas, excellent performance and high reliability. In foreign countries, especially in the United States and Europe, CAN has been widely used in automobiles, trains, ships, robots, machinery manufacturing, CNC machine tools, textile machinery, medical machinery, agricultural machinery, sensors and automation instruments and other fields. Although the CAN protocol is almost 20 years old, it is still being improved. [0003] Buses such as CAN have been widely used in China, and are ...

AI Technical Summary

Problems solved by technology

[0005] Today, although the application of CAN bus in the field of automotive electronic control is nearly mature, due to network data conflicts or communication delays, control commands are often not transmitted to the electronic control unit of the actuator through wires in time. The delay is only a few milliseconds, but it may cause a traffic accident because of these few milliseconds

Images