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Time based low tire pressure warning sensor

  • US 5,783,992 A
  • Filed: 07/22/1996
  • Issued: 07/21/1998
  • Est. Priority Date: 07/22/1996
  • Status: Expired due to Fees
First Claim
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1. In a low tire pressure warning system having a transmitter and a pressure sensor wherein the transmitter has a sleep mode of low energy consumption, a wake mode of normal energy consumption and a transmission timer, a method of using the transmission timer for intermittently transmitting a pressure message comprising the steps of:

  • periodically entering the wake mode and determining whether the transmission timer indicates that it is time to transmit a pressure message;

    when the transmission timer indicates that it is time to transmit a pressure message,transmitting a status report,selecting a random time within a prescribed time range,initializing the transmission timer with the selected random time, andreturning to the sleep mode.

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