Automotive electronics is the vehicle body electronic control device and vehicle electronic control device.Vehicle body electronic control device, including engine control system, chassis control system and body electronic control system (body electronic ECU).
The most important role of automotive electronics is to improve the safety, comfort, economy and entertainment of vehicles.With sensors, microprocessor MPU, actuator, dozens or even hundreds of electronic components and parts of the electronic control system.
According to the influence on the driving performance of vehicles, automotive electronic products can be classified into two categories: one is the automotive electronic control device, which should be used in coordination with the vehicle mechanical system, that is, the so-called 'electromechanical combination' of automotive electronic devices;They include the engine, chassis, and body electronics.Such as electronic control fuel injection system, anti-lock braking control, torque, traction control, electronic control suspension, electronic control automatic transmission, electronic power steering, etc., another kind is on-board automobile electronic device, vehicle-mounted automotive electronic device is used in car environment to be independent electronic device, it has no direct relationship and the performance of the car itself.They include automobile information system (driving computer), navigation system, automobile audio and TV entertainment system, on-board communication system, Internet equipment and so on.
In 2008, the direction of electronic technology development is to develop integrated control: the engine management system and automatic transmission control system are integrated into the integrated control of power transmission system (PCM);The braking anti-lock control system (ABS), traction control system (TCS) and drive anti-skid control system (ASR) are integrated together for braking control;Through the central chassis controller, braking, suspension, steering, power transmission and other control systems are connected through the bus.Through complex control operations, the controller coordinates each subsystem to control vehicle performance to the best level, forming an integrated chassis control system (UCC).
Due to the rapid increase in the number of electrical and electronic devices in automobiles, network and bus technologies have developed greatly during this period in order to reduce the number and weight of connecting wires.Bus technology is to connect various automotive electronic devices into a network, send and receive information through the data bus.Electronic devices can provide data service for other control devices in addition to completing their own control functions independently.The networked design simplifies wiring, reduces the number of electrical nodes and the amount of wires, simplifies assembly, and increases the reliability of information transmission.Through the data bus, any electronic control device can be accessed, fault codes can be read to diagnose the fault, which makes the vehicle maintenance easier.