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Gauge reading device and system

  • US 8,411,896 B2
  • Filed: 12/21/2006
  • Issued: 04/02/2013
  • Est. Priority Date: 12/21/2006
  • Status: Active Grant
First Claim
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1. A gauge reading system, comprising:

  • a parameter store that stores parameter data in digital form for at least one gauge;

    an image processing circuit coupled to receive image data from an image sensor physically attached to at least one gauge, wherein the image data comprises a plurality of pixels along at least one path intersecting a needle of the at least one gauge, and wherein the image processing circuit is configured to analyze the image data to generate image data points corresponding to a gauge image by determining an average intensity for the plurality of pixels and identifying pixels within an intensity limit from the average intensity, and wherein the image processing circuit is further configured to generate a gauge reading based on the identified pixels within the intensity limit from the average intensity and the parameter data;

    a transmitting circuit configured to transmit the gauge reading to a location remote from the gauge; and

    control circuit configured to activate the image processing circuit and to couple the gauge reading to the transmitting circuit.

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