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According to the effect of the car driving performance, the car electronic products can be classified into two categories: one is the car electronic control device, the car electronic control device and the car mechanical system to cooperate with the use of the so-called "electromechanical" car electronic device; They include engine, chassis, and body electronic controls. Such as electronic control 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 car information systems (driving computers), navigation systems, car audio and television entertainment systems, vehicle-mounted communication systems, Internet equipment and so on.
In 2008, the direction of electronic technology development toward centralized integrated control development: engine management system and automatic transmission control system, integrated into the power train integrated control (PCM); Anti-lock braking 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, the braking, suspension, steering, power transmission and other control systems are connected through the bus. The INTEGRATED CHASSIS CONTROL SYSTEM (UCC) IS formed BY coordinating various SUBSYSTEMS through complex control operations to control the vehicle's driving performance to the best level.
Due to the rapid increase in the number of electrical and electronic devices in cars, in order to reduce the number and weight of connecting wires, network and bus technology has made great progress during this period. Bus technology is to connect various automotive electronic devices into a network, sending and receiving information through the data bus. In addition to completing their own control functions, electronic devices can also provide data services for other control devices. Due to the use of network design, simplified wiring, reduced the number of electrical nodes and wire consumption, make the assembly work more simplified, but also increased the reliability of information transmission. Through the data bus, any electronic control device can be accessed, and the fault code can be read to diagnose the fault, which makes the maintenance work of the vehicle more simple.
The application of automotive electronics technology will bring about the following major changes in automobiles:
First, the mechanical structure of the car will also undergo significant changes, the various control systems of the car to the electronic and electric development, to achieve "line control". Replace the mechanical transmission mechanism with wire, such as "wire brake", "wire steering", "electronic throttle", etc.
Two, the car 12 volt power supply system to 42 volts conversion. With the increasing number of automotive electronic devices, the amount of electric energy consumed is increasing dramatically. The existing 12 volt power supply can not meet the needs of all the electrical systems in the car. In the future, the integrated starter and generator 42 volt power supply system will be adopted, and the maximum power output of the generator will be increased from 1 KW in 2005 to about 8 kW, and the power generation efficiency will reach more than 80%. The implementation of the new standard of 42 volt automotive electrical system will make the design and structure of automotive electrical components have a great change, the mechanical relay, fuse protection circuit will be eliminated.
The application of automotive electronic technology will make the automobile more intelligent. Intelligent cars are equipped with a variety of sensors, which can fully perceive the situation of drivers and passengers, information about traffic facilities and surrounding environment, judge whether the occupant is in the best condition, whether the vehicle and people will be in danger, and take corresponding measures in time.
Today, the society has entered the age of information network, people hope that the car is not only a means of transportation, but also an extension of the scope of life and work in the car, just like staying in their own office and home, you can listen to the radio, make phone calls, go on the Internet, deal with work. With the progress of digital technology, cars will step into the multimedia era. The on-board computer multimedia system developed by operating system has the functions of information processing, communication, navigation, anti-theft, language recognition, image display and entertainment. In the foreseeable future, cars will be equipped with automatic navigation and driving assistance systems. The driver can input the destination of the car into the car computer, and the car will follow the best route to reach the destination. Through the language recognition system, people can operate various facilities in the car, watch music videos while driving, and book meals and airline tickets online