Nowadays, new cars and most vehicles are equipped with tire pressure detection functions. We often see news that problems with tire pressure can lead to major safety accidents. Tire pressure monitoring can provide a good real-time response to tire pressure conditions, which can effectively prevent tires from being crushed due to lack of air in the tires and improve driving safety. Currently, tire pressure sensors are divided into two types due to different models and configurations, one is built-in type and the other is external type.
The principle of whether it is built-in or external is actually not complicated. The sensor sends the tire pressure data to the receiver through a wireless signal, and then displays it on the display.
The tire pressure sensor signal is sent by sending a 433 Hz or 355 Hz wireless signal to the antenna receiver. The receiver sends the tire pressure data to the BCM (Body Control Module) through the LIN (serial communication network) line, and communicates with the BCM to preset the tire pressure. The data is compared. If the tire pressure is too low, the BCM will send a signal to the instrument through the gateway through high-speed CAN (serial communication protocol), indicating that the tire pressure is too low.
What needs special attention here is that it is not good for the car's tire pressure to be too high or too low. Too high will lead to poor tire adhesion and reduce tire performance. On the contrary, if the tire pressure of the car is too low, it will increase the fuel consumption of the car, cause damage to the tires, and easily cause tire blowout. So tire pressure sensors improve our driving safety.
