What is the Principle of Tire Pressure Sensors?

[DiAlexandra]

Tire pressure sensors primarily operate based on the following two principles: 1. Direct Tire Pressure Monitoring: This method uses pressure sensors installed in each tire to directly measure the air pressure. A wireless transmitter then sends the pressure data from inside the tire to a central receiver module, which displays the pressure readings for each tire. 2. Indirect Tire Pressure Monitoring: When the pressure in a tire decreases, the vehicle's weight causes the rolling radius of that tire to become smaller, resulting in a faster rotation speed compared to the other wheels. By comparing the differences in rotation speeds among the tires, the system monitors the tire pressure. Indirect tire pressure warning systems essentially rely on calculating the rolling radius of the tires to monitor air pressure.