Digitally encoded abnormal tire condition indicating system

Details Digitally encoded abnormal tire condition indicating system Digitally encoded abnormal tire condition indicating system

B - Operations, Transporting

60

C

325/28, 340/145.

B60C 23/04 (2006.01) B60C 23/06 (2006.01) G01L 17/00 (2006.01)

Patent

CA 1145829

DIGITALLY ENCODED ABNORMAL TIRE CONDITION INDICATING SYSTEM ABSTRACT OF THE DISCLOSURE An abnormal tire condition indicating system comprising a telemetry unit mounted on each wheel of a vehicle and a central receiver. Each telemetry unit comprises a piezoelectric transducer which is deflected with each wheel revolution when the tire profile is low. Deflecting the transducer produces an electric pulse. The transducer pulses are accumulated by an accumulator until a predetermined condition is met, such as stored charge reaching a threshold level. When the predetermined condition is met, the accumulator produces an enable signal. The enable signal enables a digital encoder to produce a digitally coded signal. A transmitter modulates a carrier frequency with the digitally coded signal to produce digitally modulated radio transmission signals. The central receiver receives the digitally modulated signals from each telemetry unit and produces an indicia of the occurrence of the abnormal tire condition at one or more of the wheels.

347818

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