Tire Pressure Monitoring System has two main solutions, direct systems and indirect systems.
The direct tire pressure monitoring system is to use the pressure sensor installed in each tyre to directly measure the pressure of the tire, and to display and monitor the pressure of each tyre, Passenger Car Tyres when the tire pressure is too low or leakage, the system will automatically alarm.
Indirect tire Pressure Monitoring system is through the automotive ABS system wheel speed sensor to compare the speed difference between tires to achieve the purpose of monitoring tire pressure, Passenger Car Tyres the main disadvantage of this type of system is:
1, can not show the exact instantaneous pressure value of each tyre;
2, the same axle or the same side of the wheel or all tire pressure at the same time can not alarm;
3, can not take into account the speed, Passenger Car Tyres detection accuracy and other factors.
The active system uses MEMS technology to make capacitive or piezoresistive pressure sensors on silicon substrates, the pressure sensor is mounted on each wheel, Passenger Car Tyres the signal is transmitted through radio frequency, the wireless receiving device installed in the CAB receives the pressure sensitive signal, and after a certain signal processing, Shows the current tire pressure.
The advantage of active technology is that the technology is relatively mature, the development of the module can be applied to each brand of tires, but the shortcomings are also more prominent, Passenger Car Tyres its induction module needs battery power, so there is a system service life problems.
The sensor of the passive tire pressure monitoring system is designed with acoustic surface wave, this sensor generates a surface wave through the RF electric field, Passenger Car Tyres and when the surface wave passes through a piezoelectric substrate, it changes, and the tire pressure can be known by detecting the change in the surface wave. More knowledge of steam repair please pay attention to the micro-letter public number: Auto Repair Workshop Although the technology does not require battery power, Passenger Car Tyres it needs to integrate the forwarders into the tires, and it is possible for the tire manufacturers to establish common standards.
Tire pressure Monitoring System to detect the abnormal condition of tire pressure, only with high resolution can have high precision. Battery life is limited and capacity is affected by temperature. In order to improve the reliability of the system, the sensor best can be passive detection. Passenger Car Tyres The research shows that the information collected by the tire pressure sensor can be used to monitor the vehicle suspension system and correct the navigation system. Therefore, the future automotive pressure sensor should be a variety of functions in a passive intelligent sensor.
Automobile sensor is the fastest-growing and most used sensor in recent years, the development of domestic automobile industry stimulates the development of automobile pressure sensor,Passenger Car Tyres advanced manufacturing technology and technology make Sensor's performance more and more high, tire pressure monitoring is more accurate.