18 what is the principle of sagitar tire pressure monitoring?

Sagitar tire pressure monitoring is passive tire pressure monitoring, also called indirect tire pressure monitoring. It is to judge whether the tire is abnormal by the difference of tire speed, and give an alarm directly without displaying the tire pressure value. Indirect tire pressure monitoring system is also called WSBTPMS. WSBTPMS needs to compare the speed difference between tires through the wheel speed sensor of ABS anti-lock braking system in order to monitor the tire pressure.

ABS wheel speed sensor is used to judge whether the wheel is locked, so as to decide whether to start the anti-lock braking system. When the tire pressure decreases, the weight of the vehicle will make the tire diameter smaller and the vehicle speed will change. The change of vehicle speed will trigger WSB's alarm system, thus reminding the owner that the tire pressure is insufficient. Therefore, indirect TPMS belongs to passive TPMS. Tire pressure monitoring system can not only give an alarm when the tire is under high pressure, low pressure and high temperature, but also remind the owner to pay attention to driving safety, and help the owner to save fuel and money, and become a low-carbon and environmentally-friendly car family. TPMS statistics show that the fuel consumption of vehicles will increase by 3.3% when driving without air. Many car owners may not know that tire leakage is slow and natural, and they are not aware of insufficient tire pressure. Through the tire pressure monitoring system, we can know the tire condition at any time, prevent tire puncture, save fuel and protect the environment.

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