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Vehicle network health assessment

  • US 9,082,242 B2
  • Filed: 10/11/2013
  • Issued: 07/14/2015
  • Est. Priority Date: 10/11/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • sending, via a computer processor, a request to a gateway device to initiate a diagnostic test for a vehicle network, the request including an instruction to measure, for a predefined period of time, a voltage produced by the gateway device during the diagnostic test, the gateway device communicatively coupled to the vehicle network and the computer processor;

    converting the request to a probe signal, via the gateway device, and asserting the probe signal at differential bus lines of the vehicle network, the probe signal configured to activate a node on the vehicle network to a dominant state;

    measuring, for the predefined period of time, a voltage at a high level bus line of the differential bus lines and measuring a voltage at a low level bus line of the differential bus lines;

    calculating a difference between the voltage measured at the high level bus line and the voltage measured at the low level bus line;

    comparing the difference to a predetermined norm voltage value; and

    determining a health status of the vehicle network as a function of the comparing.

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