Tire pressure monitoring system

Details Tire pressure monitoring system Tire pressure monitoring system

1991-09-30

1994-02-22

Peng, John K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340442, 340445, 340539, 34082554, 731465, 73146, 116 34R, B60C 2300

Patent

active

052891607

ABSTRACT:
A wireless tire pressure monitoring system warns a driver of a vehicle of low pressure in one or more of its tires so that the driver may take corrective action before a tire blowout occurs. A pressure transducer, transmitter and antenna are integrally housed and mounted to the tire stem of a tire. When the pressure transducer senses a tire pressure below a preselected pressure, the transmitter broadcasts a radio frequency (RF) signal that, upon detection by a receiver mounted on the vehicle, warns the driver of abnormally low pressure. In a preferred embodiment, the transmitter is a SAW device that is periodically interrogated by an RF signal from a transmitter on the vehicle.

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