There are 2 principles of automobile tire pressure monitor:
1. The pressure information is sent from the inside of the tire to the central receiver module using a wireless transmitter, and then the pressure data of each tire is displayed.
2. When the pressure of a tire is reduced, the weight of the vehicle will make the rolling radius of the wheel smaller, resulting in its speed faster than other wheels. By comparing the speed difference between tires, the purpose of monitoring tire pressure is achieved