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Telemetry unit

  • US 20070063869A1
  • Filed: 10/01/2003
  • Published: 03/22/2007
  • Est. Priority Date: 10/01/2002
  • Status: Active Grant
First Claim
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1. A telemetry unit for a tire monitoring apparatus, the telemetry unit including a housing having sensor means for measuring data relevant to the local environment of the telemetry unit, transmission means for transmitting measured data to a remote location, a piezoelectric power generator adapted to generate and store an electrical charge in response to rotation of the tire for powering the unit, and control means for controlling the sensor means and transmission means, in which the control means is arranged to vary the rate of transmission of data from the telemetry unit in dependence on the rotary speed of the tire.

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