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Information provision device for use in vehicle

  • US 9,428,057 B2
  • Filed: 12/16/2015
  • Issued: 08/30/2016
  • Est. Priority Date: 04/20/2011
  • Status: Active Grant
First Claim
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1. An information provision device for use in a vehicle, comprising:

  • a processor configured to;

    acquire first traveling state data including at least one of a driving operation of a driver and a vehicle state;

    calculate a plurality of traveling state distributions including a traveling state distribution of an immediately- previous time range indicating a current traveling state and a traveling state distribution of a time range different from the immediately-previous time range on the basis of the first traveling state data;

    estimate first driving instability on the basis of a difference value between the calculated plurality of traveling state distributions;

    determine, as a result of a learning completion determination, that learning is completed when a predetermined learning time elapses from start of collection of the first traveling state data;

    detect whether a driving scene is a specific driving scene set in advance for use when the learning is not completed, when it is determined that the learning is not completed on the basis of a result of the learning completion determination;

    calculate, when it is determined that the learning is not completed on the basis of a result of the learning completion determination and the specific driving scene is detected, a feature amount of the traveling state distribution of the immediately-previous time range which indicates a current traveling state based on the first traveling state data in the detected specific driving scene and estimate second driving instability on the basis of the calculated feature amount;

    select the first driving instability when the learning is completed and select the second driving instability when the learning is not completed, on the basis of a result of the learning completion determination; and

    present instability information based on instability selected between the first driving instability and the second driving instability to the driver.

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