Product market With the continuous development of the automobile industry and the electronics industry, the degree of modern automotive electronics is also getting higher and higher.
Automobile electronic technology is the product of the combination of automotive technology and electronic technology. It can be said that today's automobiles have entered the era of electronic control, and all of these are dependent on the development of electronic technology. Foreign experts predict that the above will be used for automobile bodywork. Automobiles will move from simple mechanical products to advanced electronic cars, which is already the general trend.
The development trend of automobile technology in automobile industry2. In the 1990s, automotive electronics technology entered the first stage of its development. This is the most valuable to the development of the automobile industry. The most contributing stage will also be the miniaturization of the most important circuits that optimize the overall relationship of the automotive environment. Provides a basis for centralized control on cars such as braking. Centralized control of steering and suspension and centralized control of engine and transmission. Simultaneously. Intelligent integrated sensors and intelligent actuators will be put into practical use, and digital signal processing methods will be applied to voice recognition. Safe collision. Timely diagnosis and the application of electric car drive technology ff power consumption, below the west. In order to improve the future, the intelligent integrated sensor can not only provide signals for simulation and embedding, but also amplify and process the signals. At the same time, it can also automatically drift. Temperature drift and non-linear self-correction have strong ability to resist external electromagnetic interference. To ensure that the quality of the sensor signal is not affected, even under particularly severe use conditions, it can still maintain a high accuracy. It also has a compact structure. The advantage of easy installation, so that it is not affected by mechanical characteristics.
Microprocessors Microprocessors have been widely used in safe 7-access engines. Drive Train. Speed ​​control and fault diagnosis. Currently. Microprocessor for American automobiles. The majority of 8-bit, about 65.16-bit and 32-bit microprocessors, which account for the total, are rapidly expanding the market. In the past two years, 16-bit usage has increased by about 5 while 8-bit only.
The actuator and matching system include the currently used moving jade, etc. Also. New actuators such as electronically controlled variable valve timing systems are also required for engine control. The intelligent power plant continuously improves the power plant for electronic control devices. It has the function of automatic load conversion. The requirements for electronic control devices should be made digital. Break control, and with overload protection device.
With the increase in the application of automotive electronic technology, the demand for related control software will also increase. And may require improved computer networking. Therefore, it is required to use a variety of software and develop a general high-level language. To meet the requirements of a variety of hardware = By 2000, the total processing capacity of a single car computer will reach the basic level of the current computer mainframe. The multi-channel transmission network on the car will greatly depend on the software. The increase in the total number of software and the improvement of its functions. Will enable computers to complete increasingly complex tasks.
Multi-channel transmission technology Multi-channel transmission technology using 7 sub-integrated implementation is very necessary and effective. After adopting this technology, each data line becomes a network in order to share the information of the car center computer. The microprocessor can receive signals from other units through the network. There must be a new interface between the sensor and the actuator. In order to connect with the multi-channel transmission system.
Integrated technology The development of automotive electronic technology has become more and more advanced, so as to achieve more economical.
The rapid exchange of large amounts of data in the world's 155 product market. High reliability and low price are the requirements for automotive electronic network systems.
In the system. Each processor operates independently to control and improve certain aspects of the car's performance. It also provides data services when needed by other processors. The main processor collects and organizes the data of each processor, and generates a vehicle condition display. The communication controller ensures the normal flow of data.
The technical research of each automobile and electric household has become a data center with meter efficiency and diagnosability. For example, the integration of the sensor system can reduce wiring, simplify the control system, and reduce the volume of the sensor system. 6,8 Optical fiber automotive electronic technology. The advancement of automotive electronic technology has made the control of various systems centralized. Form a vehicle control system. In addition to the central computer, this system even includes up to 23 microprocessors and large sensors and actuators, forming a huge and complex information exchange and control system. The accommodating requirements of car computers are already comparable to modern machines, and the calculation speed is even higher. Due to the increasing number of automotive computer control systems. It is increasingly necessary to use high-speed data transmission networks. Optical fibers can provide a transmission medium for this transmission network to solve the problem of anti-electromagnetic interference in electronic control systems. As the cost of optical fiber continues to decrease, its application will also reduce the cost of all aspects of the car. In addition, the surface mounting technology of different wiring harnesses is used. The multi-layer printed circuit board and thick film hybrid technology will make the electronic control device more compact. Therefore, it will also play an important role as a key technology to change the installation form of electronic products.
Automotive in-vehicle electronic networks Due to the increasing power of automotive electronic technology and the increasing complexity of systems, an important trend in the development of automotive electronic equipment is the large use of microprocessors to improve the performance of automobiles. With the increasing use of electronic control devices in automobiles.
Data communication between in-vehicle electronic devices is becoming more and more important. In order to improve the economic efficiency of driving, information such as temperature and vehicle speed must be exchanged between different control units. Therefore, it is necessary to construct a vehicle-mounted electronic network system based on a distributed control system.
The rise of global intelligent transportation and automated highway technology has promoted the rapid development of highway intelligent technology and vehicle-mounted intelligent technology. It also makes the new round of competition in the automobile industry develop towards the direction of electronicization and the trend of the development of automotive electronics is becoming more and more obvious. The pace of network and automobile integration will accelerate and accelerate. At present, the consumption value of each automobile electronic product has reached 1,750 US dollars, and it is expected to exceed 2,000 US dollars in 2000. Microelectronic products and vehicle-mounted smart products account for an increasing proportion in the entire vehicle. To this end, automotive electronics experts from all over the world have developed a variety of smart technologies and automotive electronics products. Automobile companies are about to launch new cars with dedicated Internet technology. Vehicle-mounted laser bulletproof radars developed by Mazda and Toyota of Japan. The 24GHZ band vehicle-mounted anti-dust microwave radar developed by TRW Corporation of the United States has been put into application; in 1998, the American company. GM's Swedish gentry company has exhibited car computer platform, technology, for the first time organically combined cars and computers, became a pioneering initiative. The vehicle-mounted sound automatic navigation system developed by Japan's Toyota Corporation using sound synthesis technology uses sound and vehicle-mounted electronic to navigate the vehicle. There is also a driver's fatigue driving report adjustment device that can complete the monitoring of the driver during the driving process to ensure the safety of driving.
Japan Toyota also developed the 3 system. This device measures the speed of the driving wheel and the change of the vehicle body through the sensors on the car wheel and the steering wheel angle sensor. These data are processed by the microprocessor to provide the ignition time and fuel supply of the vehicle. Quantity control to the best state. In the field of automotive design. Various production and design manufacturers around the world have also continuously introduced various types of vehicle intelligent products and intelligent driving systems. Smart airbag. Vehicle intelligent suspension. Smart vehicle key. Smart car tires. Smart air conditioning, etc.
As the highly developed United States. In recent years, there have also been progressive developments in the application of automotive technology, which fully reflects the trend of automotive intelligence. The real-time traffic reporting system 1 recently announced that the company will be the first enterprise to complete the collection and transmission of real-time traffic conditions throughout the United States. At present, the company broadcasts the traffic conditions of 6, market areas, and may be able to truly cover the entire United States after adding a new market in June. 1 The company's progress is very important to equipment manufacturers. Because 1 is covering the entire United States. Manufacturer-generated equipment can be sold nationwide. Its competitor, 13 companies, now sends messages in 25 large communities, and plans to increase to 5, large communities by the end of the year.
Suppliers, what they are looking forward to is not just the scope of the east and west sides. The current traffic status reporting unit is simply a real-time broadcast of traffic incidents that have occurred. The information comes from the state police.
EMT emergency team. Highway maintenance team. Broadcaster of motorway conditions. Radio or traffic camera, etc., the information is broadcast to the radio computer and navigation system via the FM sub-load or the Internet.
But the supplier also believes that these reports failed to automatically integrate with the local database, and let the driver know that there was an accident on their way, and there is no information on the speed of the drive, which is used to estimate the traffic jam situation; telematicsjgiflil basically only provides accidents in the United States. The reporting of the incident is not enough for drivers who want to know the road conditions accurately, but these can be integrated into the navigation system, so if there is an accident in front of the expected road, the system will have abnormalities before the broadcast. It is estimated that there should be a detour, and a driver can pass the 0 call and navigation system in the car. Received basic traffic reports. About 1 of them uses this. Company 0, which provides traffic reports to six to six users, will see a significant increase in business this year. But the after-sales market will not rise yet. The company expects to have hundreds of thousands of users of various models by the end of this year. Half of them will use the Detroit Automobile Plant's 0-product 56 world electromechanical products market, and the other half will be used in automotive handheld devices. The advanced rate of 3,510 occupies the automotive handheld device market. of! The phone will be launched this summer. Have to provide; Instant traffic. Doorman service. Completely Internet! In and out as well as through the Siya, the generation of car diagnostic j-off function, and equipped with a scary 3 shift installed in the trunk! Black box of mobile modem.
1 According to the wishes of car manufacturers, it is expected that there will be 100,000 units that can be installed in cars in the summer of 1I this year, and 0 will be listed. Several companies are convinced that Detroit Auto I will begin selling models equipped with J-time road condition reporting devices at the end of 2001. General Motors and its other car manufacturers, because of the information provided by the traffic information content, forced them to postpone the product.
06 Company believes that the automobile company will be the leading role in real-time road broadcast and maneuver to change the distance service. Therefore, when the car factory delivers the hardware with the network connection function installed. In-vehicle car accounting for auto-negotiations, police, system Dallas 35 service provider Ding, company 965, and nearly 34 drivers are very interested in the automatic collision warning system on new cars in the future.
i This automatic collision alarm system is a sensor that is installed on the vehicle and is connected to a two-way communication device and the satellite I positioning system or other location detection technology. Once the sensor emits a signal, the accident and location information It will be automatically transmitted to the old processing center. The processing center will contact the driver by voice and filter out the false alarm information. If it is really intentional, the processing center will immediately notify 9 or other emergency processing units.
The application research of the intelligent automobile and intelligent delivery system 1 has been for decades. The technical issues related to automobile intelligence have been highly valued by automobile manufacturers from the initial development research of the intelligent transportation system Claw 5, which all rely on the continuous improvement and progress of electronic technology, especially computer technology. As a very large system project, smart cars and 1D5 still have to overcome many technical obstacles. But it is certain that the realization of this will not be a distant dream.
In fact, technologies related to this project have been partially integrated into the automotive industry, such as guidance systems and collision avoidance systems.
Looking at the major achievements in automotive technology in recent decades. Almost without exception is the result of the application of electronic technology, and since the 1980s, the automobile industry has made great strides in electronic technology, especially computers. Integrated circuit technology is the driving force. The adoption of electronic technology is to solve the level of the national electronic industry facing the automobile and how it is based on the application of the automobile industry. It determines that it will speed up the development of intelligent transportation technology in the future. At present, most domestic automobile electronic technology applications are still in the primary stage. stage. There are only a few manufacturers, mainly concentrated in some Sino-foreign joint venture cars, and the electronic devices that have been adopted mainly include engine fuel injection. Electronic ignition control. In terms of vehicle safety, foreign products are directly assembled. The current domestic research institutes' research on the application of automotive electronic technology is also focused on engine control. Electronically controlled suspension. 85 systems and other aspects, in the electronic networking technology of automobiles. , 5 guideline and intelligent delivery system research and other aspects still have a certain gap with foreign countries. It was revealed.
Europe. Japan. Well-known automobile companies such as the United States and Germany have a strong interest in participating in the development and construction of China's 1-5.
Intelligent transportation system technology 5 is an emerging science field in recent years. It has become the main means of solving the problems of traffic and transportation at home and abroad in the future, which not only has a strong impact on traditional automobile products, but also accelerates the change of automobile product structure. The Ministry of Science and Technology will hold the Asia-Pacific Big 5 Exhibition in July. At that time, China's intelligent transportation technology will be tested.
In recent years, China has raised the automobile industry to a higher position. Can be expected. With the technological advancement of domestic vehicles, new electronic technologies in the automotive field will surely be more and more widely used, and domestic vehicles are actively adopting electronic devices just around the corner. Although we have to catch up with the highest level in the international auto industry, there is still a way to go, but in the future, it will be applied in the field of world automotive technology, especially automotive electronic technology. Our country will certainly have its place. Xiao Yu
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