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Tire pressure measurement system with reduced current consumption

  • US 7,954,369 B2
  • Filed: 04/18/2008
  • Issued: 06/07/2011
  • Est. Priority Date: 04/27/2007
  • Status: Expired due to Fees
First Claim
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1. A tire pressure measurement system, comprising:

  • a capacitor; and

    an integrated circuit configured to receive a supply voltage, the integrated circuit comprising;

    a voltage regulator connected to the capacitor, the voltage regulator being operable to be turned on and off for predetermined periods of time such that the capacitor is charged and discharged, respectively; and

    a measurement unit connected to the voltage regulator and the capacitor, the measurement unit being configured to generate a control signal to control the on and off states of the voltage regulator such that a voltage between predetermined upper and lower limits is selectively provided to the measurement unit by the regulator during the periods of time for which the regulator is turned on, and by the capacitor during the periods of time for which the regulator is turned off.

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