How Does the Tire Pressure Monitoring System Work?
2 Answers
The working principle of the tire pressure monitoring system is: A built-in sensor is installed on the tire hub, which includes a bridge-type electronic pressure sensing device that detects air pressure and converts the pressure signal into an electrical signal. The signal is then transmitted via a wireless transmitter. The functions of the tire pressure monitoring system are: 1. It will promptly alert when there is rapid or slow air leakage due to the tire being punctured; 2. It will issue an alarm when tire loosening causes unbalanced friction, leading to high tire temperatures reaching 70 degrees Celsius, thereby preventing blowouts; 3. It will alert when the tire pressure is below the vehicle's preset limit due to prolonged lack of inflation, preventing low pressure from causing tire temperature rise and blowouts.
Simply put, automotive tire pressure monitoring systems operate in two ways. The direct method involves sensors installed inside the tires that measure air pressure and temperature, wirelessly transmitting data to an onboard receiver. The indirect method uses ABS wheel speed sensors to detect rotational differences among the four wheels—a low-pressure tire rotates slightly faster, alerting the system to potential issues. I find this technology quite convenient as it provides real-time alerts for inflation needs, prevents accelerated tire wear, and reduces excessive fuel consumption. The sensor batteries typically last several years but require replacement when depleted. Overall, it significantly enhances driving safety by preventing blowout accidents, making it a practical feature for all motorists.
