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Monitoring apparatus and method

  • US 5,893,047 A
  • Filed: 09/26/1996
  • Issued: 04/06/1999
  • Est. Priority Date: 01/12/1994
  • Status: Expired due to Fees
First Claim
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1. A cyclic system comprising;

  • a plurality of cyclic means comprising a plurality of separately operable means provided with a common source of power,transducer means connected to detect one parameter related to the source of power of the cyclic system common to the plurality of cyclic means;

    and monitoring apparatus comprising;

    means to distinguish a learning mode of the system from a monitoring mode;

    receive means to receive the output signal from said transducer means at predetermined points in the cycle of the cyclic system;

    memory means operable during said learning mode to store values relating to the output signal from said transducer means at said predetermined points in the cycle;

    means to provide ranges of said values for each said point in the cycle;

    calculator means, operable during the monitoring mode, to compare, for each said point in the cycle the value of the output signal detected with the range of values for that point,and indicator means to provide an indication signal if detected values are outside their range.

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