How Does Tire Pressure Monitoring Work?

[DeGavin]

Tire pressure monitoring works as follows: When the tire pressure of a car decreases, the weight of the vehicle causes the radius of the wheel to become smaller, resulting in its rotational speed being faster than that of other wheels. By comparing the differences in rotational speed between the wheels, the system can monitor tire pressure. This is the principle of the indirect tire pressure monitoring system built into the vehicle. Direct tire pressure monitoring devices use sensors installed on each wheel to directly measure the tire pressure. The system then transmits the pressure information from the tires to a central receiver module via a wireless transmitter, allowing real-time viewing of the pressure data for all four tires on the vehicle's computer screen. When the pressure in a particular tire is abnormal, an alarm sounds, and the display screen indicates which wheel has the issue.