3.The importance of TPMS:

　　From 2000, this concept frequently appeared in various newspapers and magazines, a hot auto industry's concern. High-speed driving in the car in the process of tire failure is the most worrying of all drivers and the most difficult to prevent, and it is sudden important reason for the accident occurred. According to statistics, in China's traffic accidents on expressways is 70 per cent from the air, and in the United States this proportion is as high as 80 percent. How to prevent the air safety has become an important subject. According to the State Quality Supervision Centre of rubber tyres of the analysis of experts, to maintain pressure on standard tyres and tyres to detect gas leakage is the key to preventing the air. The TPMS - automotive tire pressure monitoring system undoubtedly will be an ideal tool.
　　At the international level, in 2000 because of Firestone (Firestone) tires of quality problems, causing more than 100 people were killed and 400 people were injured, the industry and has caused great concern in the United States Government, Bridgestone / where WorldCom was Due to recovery in August last year, 6.5 million tires. According to American Society of Automotive Engineers recent survey, the United States each year 260,000 traffic accidents due to low tire pressure or leakage caused by the addition, each year 75 percent of the tire failure is due to leakage or inflatable tires caused by inadequate. As the annual economic losses caused enormous, the U.S. government to require vehicle manufacturers to speed up the development of TPMS system, in order to reduce tire accidents. November 1, 2000 President Clinton signed the U.S. Congress approved a law on amendments to the federal transportation proposal, requested in November 2003 after all the new cars will need gradually to such a system as a standard configuration, and the proposal by 2003 points Stage of implementation:
The first year, from September 1, 2005, 50 percent of vehicles required to comply with the implementation.
　　The next year, from September 1, 2006, 90 percent of vehicles required to comply with the implementation.
　　September 1, 2007 after all vehicles must comply with the implementation.
In products, TPMS can be divided into two types, one is the Wheel-Speed Based TPMS (referred to indirect TPMS), this system is the vehicle through the ABS wheel speed sensor system to compare the speed difference between the tyres, To achieve the purpose of monitoring tire pressure, the type of system is not the main shortcomings of two or more tires at the same time the gas shortage situation and speed of over 100 km / hour to judge the situation and has gradually been eliminated.
　　The other is the Pressure-Sensor Based TPMS (short of direct TPMS), the use of such a system is installed in each tire's pressure sensor to direct measurement tire pressure, tire pressure and the display monitor and, when the tire pressure Too low or leakage, the system will automatically report, is more commonly used by technical means.
　　At present, many international car manufacturers put TPMS system as a standard configuration, such as: Audi A8, A6, BMW 7 Series and 5 Series, x3, Mercedes-Benz S-Series, C series, Volkswagen Phaeton, Touareg Including Ferrari, Porsche sports car, and so on and so on.
　　The majority of domestic auto manufacturers are not TPMS products as the standard configuration, the main consideration to the Chinese market and installation costs of vehicle safety awareness of the environment is not ripe. But China's accession to the WTO, along with international demands that domestic manufacturers will catch up with this pace. With China's sustained economic development, more and more cars to enter ordinary families, traffic safety, road traffic management issues will be more and more institutions and drivers the importance China has already owned more than 50 million vehicles, The huge auto market demand for security products will be more and more pressing, in 2006, the domestic market on the TPMS system as a standard car brands has increased a lot, such as: GM Buick Jun Wei, Rong Royal; new Audi A6L; Toyota, such as the new crown. Therefore, according to industry experts predict, TPMS the following ABS, air bags after the third-largest security systems in the country will also be developed rapidly.