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Method for diagnosis of functional faults in a functional architecture

  • US 7,720,638 B2
  • Filed: 12/19/2003
  • Issued: 05/18/2010
  • Est. Priority Date: 12/20/2002
  • Status: Expired due to Fees
First Claim
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1. A method, implemented by a diagnostic device, for diagnosing functional faults of a functional architecture including functions for performing a service in an automobile with an internal combustion engine and associated with sensors and actuators that produce and consume data, said method comprising:

  • mapping, by said diagnostic device, said functions onto a hardware architecture composed of hardware components;

    measuring, by said diagnostic device, a property of said automobile with at least one of said sensors so as to obtain raw data;

    creating a first list of particular values based on said raw data and corresponding to functional faults of the sensors and actuators of said automobile;

    creating a second list of particular values corresponding to functional states for said hardware components relative to a propagation of signals through said hardware architecture thereby indicating a state of propagation of information relating to said functional faults of said sensors and actuators across the functional architecture;

    formulating a functional diagnosis of the service based on the first and second lists of particular values; and

    recording the particular values and their propagation on a memory device.

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