Purpose：
Along with the progress of industrial economy, the automobile starts to use in large quantities, the highway and the highway also get the attention day by day, and starts to develop. The United States has the longest total highway length and highway length, has formed about 69,000 kilometers of Interstate highway network, the road has become an essential part of Americans' daily life. Western European countries and Japan, the road network foundation is good, the highway also becomes the network gradually, the road transportation has been the main force of inland transportation. As a developing country, China ranked second in the world last year in terms of the total length of expressways open to traffic, with a total length of more than 60,000 kilometers in 2008. However, due to its vast territory, the average density of the expressway network is very low, road conditions are also relatively poor.
The speed and convenience of the expressway have changed people's concept of time and space, shortened the distance between regions, and improved people's life style. However, the serious traffic accident on the highway is shocking, which has attracted the attention of many countries in the world, and has begun to discuss or take corresponding preventive measures.
According to a 2002 survey by the American Society of Automotive Engineers, an average of 260,000 traffic accidents in the United States each year are caused by low tire pressure or leakage; Seventy per cent of traffic accidents on the motorway are caused by a flat tyre; in addition, 75 per cent of tyre failures each year are caused by a leaking or under-inflated tyre. The statistics show that the main reason for the increase of traffic accidents is the tire burst caused by the tire failure in high speed driving. According to statistics, in China, 46% of highway traffic accidents are caused by tire failure, which only one of the tire accounted for 70% of the total number of accidents, which is a staggering number!
In the high-speed driving process of the car, tire failure is the most lethal and the most difficult to prevent the hidden dangers of accidents, is an important reason for sudden traffic accidents. How to solve the tire trouble, how to prevent tire blowout, has become the world's primary concern.
On November 1,2000, President Clinton signed into law a bill to amend the Federal Transportation Act, federal legislation requires that all new cars manufactured since 2003 have a tire pressure monitoring system (TPMS) as standard; With effect from 1 November 2006, all vehicles required to travel on the motorway will be equipped with a tire pressure monitoring system (TPMS) .
In July 2001, the United States Department of Transportation and the National Highway Safety Administration -NHTSA-RRB-TSA) jointly evaluated two existing tire pressure monitoring systems (TPMS) in response to congressional requirements for vehicle TPMS legislation, for the first time, the report uses TPMS as a term of reference and confirms the superior performance and accurate monitoring capabilities of direct TPMS. As one of the three major safety systems, TPMS, together with airbag and Anti-lock braking system (ABS) , has been recognized by the public and received due attention.
Post time: Mar-15-2023