What is the principle of tire pressure monitoring?

[LaDallas]

There are two principles of automotive tire pressure monitoring: direct tire pressure monitoring and indirect tire pressure monitoring. Below is an introduction to the principles of tire pressure monitoring: 1. Direct tire pressure monitoring devices use pressure sensors installed in each tire to directly measure the tire pressure. The pressure information is transmitted from inside the tire to a central receiver module via a wireless transmitter, and then the tire pressure data is displayed. When the tire pressure is too low or there is a leak, the system will automatically alert. 2. The working principle of indirect tire pressure monitoring is: when the pressure of a tire decreases, the weight of the vehicle will cause the rolling radius of that wheel to become smaller, resulting in a faster rotation speed compared to other wheels. By comparing the differences in rotation speeds between tires, the purpose of monitoring tire pressure is achieved. Indirect tire pressure alert systems essentially rely on calculating the rolling radius of the tires to monitor the pressure.