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According to the installation position of the sensor, it can be divided into built-in tire pressure monitor and an external tire pressure monitor.
In contrast, the built-in type is more troublesome to install and maintain, requiring tire removal, but it has a longer lifespan. The outboard type is simpler to install and maintain, and can be installed directly without removing the tire: but it has a shorter lifespan and the sensor needs to be removed every time it is inflated.
In terms of measurement accuracy, since the tire pressure monitoring solutions used in the external and internal tire pressure monitoring methods are the same, there will be no difference in the accuracy of tire pressure measurement. However, built-in tire pressure monitoring is more accurate for measuring tire temperature.
According to the measurement method, it can be divided into indirect tire pressure monitoring (WSB) and direct tire pressure monitoring (PSB)
PSB direct tire pressure monitoring is to install sensors directly to the tires to directly monitor, accurately display the air pressure value of the four tires, and once an abnormality occurs, it will immediately point to the faulty tire. PSB direct tire pressure monitoring is not affected by vibration, temperature, vehicle speed and other environments, and can measure the actual instantaneous pressure of each tire at any time.
WSB indirect tire pressure monitoring uses the ABS system to monitor the change of tire rotation speed. It is impossible to determine which tire is faulty, and when the coaxial or more than two tires are abnormal, the alarm cannot be issued. Moreover, WSB indirect tire pressure monitoring is prone to false alarms when the road conditions are poor and the vehicle is bumpy, and it fails when the speed exceeds 100km/h. Therefore, in contrast, PSB direct tire pressure monitoring is better.
