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Portable device and method for querying a vehicle network

  • US 10,127,742 B2
  • Filed: 01/12/2017
  • Issued: 11/13/2018
  • Est. Priority Date: 11/04/2013
  • Status: Active Grant
First Claim
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1. A method for minimizing or preventing the drainage of the electrical capacity of a vehicle battery resulting from use of a portable controller device that plugs into the On-Board Diagnostic II (OBD-II) port of a vehicle and is configured to query a network of the vehicle for a real-time response value for one or more parameters, comprising the steps of:

  • a) providing the portable controller device that is plugged into the On-Board Diagnostic II (OBD-II) port of a vehicle;

    b) monitoring by the portable controller device a value of the voltage potential of a battery of the vehicle;

    c) monitoring a vehicle journey status by the portable controller device, comprising;

    in an inferring mode the steps of;

    i) querying continuously a predetermined monitoring parameter on the network;

    ii) comparing a response to the query of the predetermined monitoring parameter against a predetermined inferring response or parameter value that infers that the vehicle journey has changed to ‘

    ended’

    , the predetermined inferring response or parameter value comprising an absence of a response to the query of the predetermined monitoring parameter;

    iii) inferring that the vehicle having the vehicle journey status of ‘

    underway’

    has ‘

    ended’

    , if the response to the query of the predetermined monitoring parameter is the absence of a response to the query of the predetermined monitoring parameter, and identifying the predetermined monitoring parameter as a candidate parameter, andin a confirming mode the steps of;

    iv) querying the candidate parameter sequentially within a predefined term, to return a sequence of responses for the candidate parameter;

    v) comparing the sequence of responses with the inferring response or parameter value; and

    vi) confirming that the journey status has ‘

    ended’

    when the sequence of responses are the predetermined inferring response or parameter value;

    d) stopping querying the network by the portable controller device when the vehicle journey status is confirmed to be ‘

    ended’

    , and the monitored vehicle battery voltage potential is at or below a first predefined voltage level that implies an inactive battery charging state; and

    e) restarting querying the network by the portable controller device only after the monitored vehicle battery voltage potential rises above a second predefined charging level that implies an active battery charging state.

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