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Diagnostic fault detection and isolation

  • US 20050223288A1
  • Filed: 11/30/2004
  • Published: 10/06/2005
  • Est. Priority Date: 02/12/2004
  • Status: Abandoned Application
First Claim
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1. A fault detection and isolation method for detecting and isolating faults in a complex system comprising:

  • identifying at least one subsystem of the complex system for testing;

    generating a test sequence defining an order of testing of the subsystems identified for testing and an order of individual tests to be performed on each subsystem identified for testing; and

    performing a subsystem fault detection and isolation test for each subsystem of the complex system identified for testing using a stand-alone test interface module, wherein the subsystem fault detection and diagnostic test comprises;

    checking prerequisite conditions;

    requesting periodic built-in-test results if available, if periodic built-in-test results are not available, then requesting periodic built-in-test be performed and requesting the results of the periodic built-in-test;

    receiving periodic built-in-test result data;

    testing interfaces;

    requesting execution of initiated built-in-test;

    requesting the results of the initiated built-in-test once it has completed;

    receiving initiated built-in-test result data; and

    indicating any detected faults and isolating and indicating one or more components that are associated with the detected faults.

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