What is the lifespan of built-in tire pressure monitoring sensors?
1 Answers
Generally, the lifespan of built-in tire pressure monitoring sensors is usually more than 5 years. The main factor determining the lifespan is the designed power consumption level. If the power consumption is low, the usage time will be longer. Tire pressure monitoring automatically monitors tire pressure in real-time during vehicle operation and alerts the driver in case of tire leaks or low pressure to ensure driving safety. There are three commonly used tire pressure monitoring methods: Direct tire pressure monitoring: Direct tire pressure monitoring devices use pressure sensors installed in each tire to directly measure tire pressure. The pressure information is transmitted from inside the tire to a central receiver module via wireless transmitters, and then the tire pressure data is displayed for each tire. The system automatically alerts when tire pressure is too low or when there is a leak. Indirect tire pressure monitoring: When the pressure in a tire decreases, the vehicle's weight causes that wheel's rolling radius to become smaller, making it rotate faster than other wheels. By comparing the rotational speed differences between tires, the system monitors tire pressure. Indirect tire alert systems essentially rely on calculating the tire's rolling radius to monitor pressure. Introduction to Tire Pressure Monitoring System (TPMS): It combines the advantages of both systems mentioned above. Direct sensors are installed in two diagonally opposite tires, along with a 4-wheel indirect system. Compared to using only direct systems, this hybrid system can reduce costs and overcome the indirect system's inability to detect simultaneous low pressure in multiple tires. However, it still cannot provide real-time data of actual pressure in all four tires like direct systems can.
