computer hardware, consumer electronics, electronic components

Tire pressure sensor

Maintaining proper air pressure in tires is an important consideration for a motor vehicle driver. Both over-inflation and under-inflation of the vehicle's tires can have detrimental effects on vehicle handling, making the vehicle harder to control. Tire pressure sensors are used to monitor the internal air pressure in individual pneumatic tires of a vehicle and to provide a warning signal to the driver whenever the internal air pressure in one or more of the vehicle tires is dangerously low or high. Tire pressure sensors are standard equipment on many vehicles manufactured today. A typical tire pressure sensor system includes a pressure transducer that converts pressure into analog output. This type of system can measure absolute and/or gauge pressure and deliver a pressure reading to a central unit via radio frequency (RF) communication. The RF signal is transmitted to a vehicle-mounted receiver, which uses the warning signal to alert the driver either visually (by activating a warning lamp or display) or audibly (by activating an audible alarm) or both. Tire pressure sensors require electrical power to monitor and transmit information regarding the current tire pressure for display in the passenger compartment of the vehicle. Typically, the tire pressure sensors are powered by long-life batteries also disposed within the tires. The sensor is generally placed in the tire and, more precisely, it is fixed on the circumferential periphery of the wheel rim and is pressed against it in order to avoid vibration.


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