What is the principle of car tire pressure monitoring?
2 Answers
Car tire pressure monitoring principle depends on the type of monitoring device, specifically introduced as follows: 1. Direct tire pressure monitoring: Uses pressure sensors installed inside the tires to measure air pressure, and wireless transmitters to send pressure information from inside the tire to a central receiver module. 2. Indirect tire pressure monitoring: When tire pressure decreases, the vehicle's weight causes that wheel's rolling radius to become smaller. By comparing rotational speed differences between tires, it achieves the purpose of monitoring tire pressure. 3. Functions of tire pressure monitoring: Prevent accidents; Extend tire service life.
The tire pressure monitoring system is quite interesting. Simply put, it allows the car to monitor the air pressure in the tires itself and alerts you immediately if there's a problem. There are mainly two types: Direct systems install small sensors inside the tires to monitor pressure and temperature in real-time, transmitting data wirelessly to the dashboard for display. If the pressure is too low or too high, it beeps to alert you. Indirect systems are even smarter—they use the existing ABS wheel speed sensors to detect changes in tire rotation speed. Since an underinflated tire has a slightly smaller diameter and rotates faster, the system automatically compares differences and issues a warning. This makes driving much safer, especially by allowing you to address potential blowouts on highways in advance. Maintenance is also convenient, such as replacing the sensor batteries every five or six years when needed.