Tire pressure monitoring system

Details Tire pressure monitoring system Tire pressure monitoring system

1997-08-29

1999-03-16

Oen, William

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

B60C 2302

Patent

active

058833056

ABSTRACT:
Remote energy transmitting circuits 30, 35, 36, 37 sequentially transmit a first RF signal when activated by the controller 60. A remote unit 14 in the tire receives the first RF signal, and when the pressure in the tire is greater than a predetermined pressure, the remote unit 14 transmits a second RF signal. Via the remote receiver 20, the controller 60 determines whether the second RF signal is received within a predetermined time after transmitting the first RF signal. When the second RF signal is not received within the predetermined time, the controller 60 assumes a pressure detection failure and causes a display to indicate this condition.

REFERENCES:
patent: 5235850 (1993-08-01), Schurmann
"Sensor Continuously Monitors Tire Pressure", Mark A. Gottschalk, Design News, Oct. 9, 1995, p. 59.

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