Automotive CAN bus teaching equipment Chengdu Panfeng Technology

Regarding the application of bus in automobile electronic control units, let me first look at the internal design of the car:
It is precisely because the bus has advantages that other communication methods cannot match that it becomes an ideal bus for automobile control systems. . A gateway is set up to connect these communication networks with different speeds to realize data sharing between all nodes. The communication network topology of the entire car is shown in the figure.
It has been proved through experiments that the bus has the following advantages:
① Free networking, strong scalability, online and offline, plug-and-play and multi-station reception
② Automatic error definition and simplification It improves the communication operation of the electronic control unit, strengthens data security, and meets the needs of control systems and other systems with higher data requirements
③Master-slave working mode, flexible communication method, no node information such as station address is required, and non-standard Destructive bus arbitration technology to meet real-time requirements. Abroad, automotive bus technology has basically formed a unified standard, hardware interfaces have also been unified, and chips have been finalized and mass-produced. The bus has been included in the vehicle design as a standard equipment of the automobile.
B suspension traction engine R control system control system control system control system In order to solve the data exchange problem between the numerous electronic controls and test instruments in modern automobiles, the German company turned to develop a serial data communication Protocol, referred to as bus. With the widespread use of integrated circuits and microcontrollers in the automobile industry, the problem that arises is that there are more and more electronic control units in automobiles, and the application of automobile buses will inevitably become popular and become an inevitable trend.
Network communication system software design
The software system of this system is mainly composed of high-speed communication module and low-speed communication module, including engine control system, suspension control system, brake anti-lock control system, traction control system, The R control system forms a high-speed communication module, and the instrument system and central door control system elements form a low-speed communication module.