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Methods for establishing alerts and/or alert limits for monitoring mechanical devices

  • US 7,366,639 B2
  • Filed: 09/29/2004
  • Issued: 04/29/2008
  • Est. Priority Date: 09/29/2004
  • Status: Active Grant
First Claim
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1. A method for establishing at least one of an alert or an alert limit for monitoring a mechanical device, said method comprising:

  • identifying faults that can be recognized by their effect on measured trends;

    determining a set of available sensors for monitoring said trends;

    acquiring and processing representative data to obtain a statistical characterization of said trends;

    determining a parameter variance for at least one alert test in accordance with said statistical characterization;

    analyzing Type I and Type II error risks and associated financial penalties to adjust parameters associated with the at least one alert test, wherein one Type I error risks represent the likelihood of false alerts, and wherein the Type II error risks represent the likelihood of missed alerts;

    automatically programming an automated alert system to utilize the adjusted parameters to identify measured trends of a mechanical device that are to be brought to the attention of a human analyst.

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