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Apparatus and method for interfacing time-variant signals

  • US 10,335,081 B2
  • Filed: 08/25/2014
  • Issued: 07/02/2019
  • Est. Priority Date: 01/30/2002
  • Status: Active Grant
First Claim
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1. A method of determining a status of an electrical connection between a monitoring device and a sensing device utilizing an interface circuit, said interface circuit configured for signal communication with each of said monitoring device and said sensing device, said method comprising:

  • detecting, via said interface circuit, an excitation signal, said excitation signal provided by said monitoring device to said sensing device during operation of said sensing device and said monitoring device;

    buffering, via said interface circuit, said excitation signal to produce a buffered excitation signal;

    analyzing, via said interface circuit, said buffered excitation signal to identify variations therein indicative of said status of said electrical connection;

    generating, via said sensing device, a binary digital signal representative of a time variant waveform; and

    based at least in part on said status of said electrical connection indicating an established electrical connection between said monitoring device and said sensing device, generating an output signal derived at least in part from said binary digital signal, said output signal being compatible with and configured for delivery to said monitoring device;

    wherein said derivation of said output signal is independent of said excitation signal.

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