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Battery saving two-way communication circuit and system and method for automatic meter reading

  • US 7,786,893 B2
  • Filed: 09/01/2006
  • Issued: 08/31/2010
  • Est. Priority Date: 09/01/2005
  • Status: Expired due to Fees
First Claim
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1. An automatic meter reading system comprising:

  • a meter-side unit to receive a meter signal from a meter; and

    a collector to receive the meter signal from the meter-side unit and forward a collector signal to the meter-side unit in response to the meter signal, wherein the meter-side unit is configured to remain in a sleep mode for a predetermined amount of time, the meter-side unit being configured to enter a wake mode after the predetermined amount of time and forward the meter signal to the collector in response to the wake mode and wherein the meter-side unit is configured to receive the collector signal; and

    a radio passband filter that maximizes extraction of a received signal by avoiding an intermediate frequency filter.

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