tire pressure monitoring system, the English name ldquo; tire pressure monitoring systemrdquo ;, referred to as TPMS. Its role is to be in the car driving the process of real-time automatic tire pressure monitoring, and a flat tire and low pressure alarm, in order to ensure road safety. Tire pressure monitoring system is generally mounted on the wheel rolls, by air pressure in the tires built sensor for sensing the pressure signals into electrical signals, via the wireless transmitting means transmits signals to the receiver, displaying various data changes on the display beep or other forms, the driver can display the tire according to the data in a timely manner aerated or deflation, leakage can be found in time, let the big surprise able to resolve in a small place.
1. The tire pressure detecting system type and characteristics of
Currently on the market, TPMS can be divided into indirect tire pressure monitoring system and a tire pressure monitoring system directly.
1, indirect tire pressure monitoring system
indirect tire pressure monitoring systemSystem, also known as WSB, WSB need to compare the difference between the rotational speed of the tire wheel speed sensors of the ABS system of the car, for the purpose of monitoring tire pressure. ABS determines whether locking of the wheels by the wheel speed sensor, to determine whether to start antilock brake systems. When the tire pressure decreases, the weight of the vehicle causes a smaller diameter tires, the vehicle speed will change. WSB speed change will trigger the alarm system to remind the owners pay attention to tire pressure insufficient. Thus the indirect TPMS is a passive type TPMS.
2, direct tire pressure monitoring system
Direct Tire Pressure Monitoring System, also known as PSB, PSB is the use of a pressure sensor mounted on the tire to measure the tire pressure, using a wireless transmitter to transmit pressure information from inside the tire to a central receiver system module, and tire pressure data display. When the tire pressure is low or leakage, the system will alarm. Thus the direct TPMS is an active type TPMS.
2. works
When lowering the air pressure of a tire, the rolling radius of the wheel will be smaller, which results in faster speed than the other wheels. By comparing the difference between the rotational speed of the tire, to achieve the purpose of monitoring tire pressure.
The indirect TPMS tire warning system actually rely on tire rolling radius calculated for monitoring the air pressure;
The direct TPMS tire pressure monitoring system is a valve with direct replacement of the sensor original car valve, sensing using the sensor chip in the sensorTire pressure and temperature at the stationary state of motion and subtle changes, converting electrical signals into radio frequency signals, and is provided with a separate channel made within the receiver, so that the owners know whether the tire body in a stationary state or driving tire pressure and temperature.
now are direct tire pressure monitoring system, indirect basically been eliminated, only a small part of an annual output of 06 imported cars is indirect tire pressure monitoring system installed, such as the Magotan, honors and other models .