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High Speed Frequency and Phase Estimation for Flow Meters

  • US 20080184814A1
  • Filed: 12/05/2005
  • Published: 08/07/2008
  • Est. Priority Date: 12/29/2004
  • Status: Active Grant
First Claim
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1. Meter electronics (20) for processing sensor signals in a flow meter, comprising an interface (201) for receiving a first sensor signal and a second sensor signal and a processing system (203) in communication with the interface (201), with the meter electronics (20) being characterized by:

  • the processing system (203) being configured to generate a ninety degree phase shift from the first sensor signal and compute a phase difference using the ninety degree phase shift.

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