Chengdu Panfeng Technology Engineer, an expert in automotive electronic control experimental teaching systems, introduced that as the performance of modern automobiles continues to improve, new control functions are constantly added, such as central door locks, lighting control, glass lifting, rearview mirror adjustment, sunroof control, seats adjustment and ignition delay control, etc. Traditional control systems mostly use relays and independent mode control, which results in excessive wiring harnesses and complex wiring in the car, causing severe electromagnetic interference and reducing system reliability. At present, many cars use buses to connect the entire car control system for unified management, realize data sharing and mutual cooperation, make the wiring harness wiring in the car convenient and reliable, improve the overall safety and cost-effectiveness of the car, and enhance its competitiveness. . Each control unit has different response time requirements for the system, such as anti-lock braking systems, drive anti-skid systems, electronically controlled driving stability systems, airbags, etc., which have higher real-time requirements for the system. Lighting control, air conditioning control, etc. have high requirements on the system. Response time requirements are relatively low.
As there are more and more computer control units, the load of using a single network bus is getting heavier and heavier. By serving as the main controller of the system and also serving as a gateway (intelligent processing of data information to be transmitted between buses to ensure that only certain types of Specific information can be transmitted between networks), control units with high real-time requirements use high-speed network transmission, and control units with relatively low real-time requirements use low-speed network transmission, which can not only improve the system's resistance to electromagnetic interference, but also The transmission harness can be simplified and transmission reliability improved.
based on the automotive computer control system
Function introduction
The company's positioning point is selected as the main controller and also serves as the gateway. This type of system clock can reach up to 1,000 operating speeds, and has on-chip up to one word of program memory, up to one word of data/program and word and word, embedded channel bit/converter, module and watchdog timer module. With rich resources and convenient interfaces, it is particularly suitable for situations such as automotive computer control that require high real-time and reliability requirements and serious electromagnetic interference.
Automotive computer control systems have been widely involved in many aspects such as power, safety, environmental protection, energy saving, comfort, etc. Engineers from Chengdu Panfeng Technology continued to say that the electronic control units of various control systems are closely related to each other and require real-time processing of large amounts of data. Communication, and in order to meet the real-time requirements of each subsystem, vehicle public data must be shared. Therefore, when building a bus control system, it is always hoped that the communication control network has a higher baud rate and reliability. However, if all the nodes in the entire car are connected to a network and many nodes communicate data through a bus, it is easy for the bus load to be too large, resulting in a decrease in the system's real-time response rate. Therefore, after analyzing the real-time performance of each node in the car, a high- and low-speed communication network based on A gateway is set up to connect these two communication networks with different speeds to realize data sharing between all nodes. The automotive electronic control bus experimental teaching system can help develop automotive electronic control communications.
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