With the rapid development of computer technology, communication technology and integrated circuit technology, a large number of field instruments and equipment represented by digital field buses have been used, which has caused huge changes in traditional field control technology and field control equipment. The cumbersome field connection is replaced by a single concise field bus network, the signal transmission quality is also greatly improved, and the car has also begun to enter the network era.
According to the impact on the driving performance of automobiles, automotive electronic products can be classified into two categories: one is automotive electronic control devices, including engine, chassis, and body electronic controls. The first category is in-vehicle automotive electronic devices, including automotive information systems, navigation systems, car audio and TV entertainment systems, in-vehicle communication systems, and Internet access equipment.
Application in automotive electronic control devices
Automobiles are becoming more and more electronic, and related electronic equipment has begun to be used in large numbers. This will inevitably lead to longer and more complicated automotive wiring, and reduced operational reliability and increased difficulty in troubleshooting. In particular, the introduction of a large number of electronic control units, in order to improve the utilization rate of signals, requires a large amount of data information to be shared among different electronic units, and a large number of control signals in the automobile integrated control system also need to be exchanged in real time. Meet this demand. In the automotive electronic network, digital serial communication is used between electronic devices, and there are multiple devices on a pair of buses. This networked design simplifies wiring, reduces the number of electrical nodes and the amount of wires, simplifies assembly work, and also increases the reliability of information transmission, enabling distributed applications of electronic equipment in vehicles Information and resource sharing, you can access any electronic control device through the data bus, read the fault code to diagnose it, making the maintenance of the vehicle easier.
At present, the development direction of electronic technology is toward centralized integrated control: the engine management system and the automatic transmission control system are integrated into the integrated control of the power transmission system (PCM); the brake anti-lock control system (ABS) and the traction control system ( TCS) and drive anti-skid control system (ASR) are integrated for brake control; through the central chassis controller, the brake, suspension, steering, power transmission and other control systems are connected through the bus. The controller coordinates various subsystems through complex control operations to control the vehicle's driving performance to the optimal level, forming an integrated chassis control system (UCC). Hundreds of sensors and dozens of microprocessors are now installed in cars, and the number of CPUs used in a single car on some high-end cars has reached dozens or even hundreds. On the basis of a more comfortable car, how to make the car more automated, intelligent, and safe makes the network more prominent in the automotive electronic system. The communication line connects various automotive electronic devices into a network, which is sent through the data bus and Receive information. In addition to independently completing their respective control functions, electronic devices can also provide data services for other control devices. After adopting the network technology, not only all sensors but also other equipment can be shared, such as ring network control, dozens of microcomputers, but individual problems occur, and the whole vehicle can still run normally. Therefore, the network not only adds many functions to automotive applications, but also greatly increases reliability. In order to meet the needs of automotive network control, it is better to complete the exchange of information, coordinated control, shared resources, and standardization and generalization between various control systems.
Application in automotive electronic devices
The introduction of car information systems, navigation systems, car audio and TV entertainment systems, in-vehicle communication systems, Internet access equipment, etc., make cars equipped with mobile office, learning and training, safe driving and leisure and entertainment functions, people can be more comfortable when driving the car, Safety. The vehicle-mounted electronic system has functions of information processing, communication, navigation, language recognition, image display and entertainment. The top artificial intelligence technology and network technology enable people to fully understand what is creating fun for our driving life in the car. Now companies in the industry are making unremitting efforts, such as Auto PC, which is installed on the dashboard of an ultra-luxury concept car, which belongs to the open structure of the car microcomputer platform. It integrates car audio functions, computer functions, road navigation functions, and voice recognition wireless communication system functions. Taking car technology as the core, it provides information and entertainment facilities for cars and enables drivers to receive e-mail freely during safe driving. , Calling and dialing, querying special destinations, receiving traffic and climate information, and changing music records. In addition, the car PC platform technology developed by other companies uses the Universal Serial Bus (ISB), which enables the platform to be compatible with all its USB products, providing endless development opportunities for its hardware and software vendors. GM announced that it will conduct research and development on a new "network" car with an Internet interface and voice recognition. Ford, in cooperation with Microsoft and Intel, has developed the "ICES" automotive PC multimedia system with functions such as information processing, communications, entertainment and security, and anti-theft. Providing an international Internet interface and adding emergency services, the system can "understand" and complete the driver's instructions to add new routes to existing electronic maps to maintain the map's practicality. In addition, the system uses voice recognition technology and remote emergency satellite communication technology, car control will become more relaxed and interesting.
Networking is the inevitable trend of the development of automotive electronic technology
Due to the increasingly powerful functions of automotive electronics and the increasing complexity of systems, an important trend in the development of automotive electronic equipment is the massive use of microprocessors to improve the performance of automobiles. With more and more applications of electronic control devices in automobiles, data communication between in-vehicle electronic equipment becomes more and more important. In order to further improve the economy and safety of driving, information such as temperature and vehicle speed must be exchanged between different control units. The rapid exchange of large amounts of data, high reliability and practicality are the requirements for automotive electronic network systems.
Today, "car audio", "navigation system", "electronic information" are relatively independent systems, and tomorrow, but these areas are inseparable. Tomorrow's in-vehicle electronic entertainment system will be re-evaluated through navigation and electronic information functions. The common components of the car are closely integrated with various audio-visual equipment, telephones, satellites, global positioning systems and other devices through the car computer. In the near future, the combination of car navigation, network functions and audio will become the basic equipment of every car. As part of integrated components, car navigation and electronic information will be the basis of free flow.
Soundproof MTU Diesel Generator
Soundproof Generator 5Kva,Soundproof Mtu Diesel Generator,350Kva Mtu Soundproof Diesel Generator,350Kva Mtu Soundproof Diesel Generator Set
Jiangsu Lingyu Generator CO.,LTD , https://www.lygenset.com