Principle：
A built-in sensor is installed on the tire die. The sensor includes an electric bridge type air pressure sensing device which converts the air pressure signal into an electrical signal and transmits the signal via a wireless transmitter.
TPMS monitors tire pressure, temperature and other data in real-time while driving or standing still by installing highly sensitive sensors on each tire, and transmits it wirelessly to a receiver, display various data changes on the display or in the form of beeping, etc. , to alert drivers. And in the tire leakage and pressure changes exceed the safety threshold (the threshold value can be set through the display) alarm to ensure driving safety.
Receiver：
Receivers are also divided into two categories according to the way they are powered. One is powered by a cigarette lighter or by a car power cord, as most receivers are, and the other is powered by an OBD plug, Plug and play, and the receiver is a HUD head-up display, such as Taiwan s-cat TPMS is such.
According to the display data, the driver can fill or deflate the tire in a timely manner, and find leakage can be dealt with in a timely manner, so that major accidents can be resolved in small places.
Popularization and popularization:
Now the tire pressure monitoring system still has a lot of need to improve the place. For the indirect system, it is impossible to show the condition of the flat of the coaxial or more than two tires, and the monitoring fails when the vehicle speed is above 100km/h. And for direct systems, the stability and reliability of wireless signal transmission, the service life of sensors, the accuracy of alarm (false alarm, false alarm) and the voltage endurance of sensors are all in urgent need of improvement.
The TPMS is still a relatively high-end product. There is still a long way to go before popularization and popularization. According to statistics, in the United States in 2004,35% of registered new cars are installed TPMS, is expected to reach 60% in 2005. In the safety-conscious future, tire pressure monitoring systems will become standard on all cars sooner or later, just as ABS did from the beginning to the end.
Post time: Mar-07-2023
