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Driving model generation device, driving model generation method, driving evaluation device, driving evaluation method, and driving support system

  • US 10,229,229 B2
  • Filed: 01/15/2013
  • Issued: 03/12/2019
  • Est. Priority Date: 01/20/2012
  • Status: Active Grant
First Claim
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1. A driving model generation device configured to generate a driving model on the basis of a driving operation of a vehicle by a driver and to interface with a driving support system that supports driving operation of the vehicle by the driver, the driving model generation device comprising:

  • a state quantity detector sensor configured to detect a vehicle state quantity that changes according to the driving operation by the driver; and

    a model generator circuit configured to, on the basis of the vehicle state quantity when the driver starts a specific driving operation and the vehicle state quantity when the driver ends the specific driving operation, generate the driving model to be used as a reference related to the specific driving operation, whereinthe vehicle state quantity includes a movement distance or a movement time of the vehicle from the start of the specific driving operation to the end thereof and an amount of change in vehicle behavior from the start of the driving operation to the end thereof,the model generator circuit is configured to generate a simple model that shows changes over time in vehicle behavior from the start of the specific driving operation to the end thereof,the driving model generation device further includes a gradual change processor circuit configured to carry out gradual change processing, which is processing for decreasing a degree of change in vehicle behavior per unit time or per unit distance shown by the previously generated simple model to generate the driving model by incorporating a time constant into the simple model,the gradual change processor circuit is configured to carry out, as the gradual change processing, processing for decreasing the degree of change in vehicle behavior in a zone of a specific percentage that includes a change in the vehicle behavior in an entire zone where the specific driving operation has been performed,the gradual change processor circuit is configured to modify the degree of change in vehicle behavior of the simple model according to whether the entire zone is long or short,the gradual change processor circuit is configured to change the simple model in a manner in which the vehicle behavior will change over a longer zone when the entire zone is long and change the simple model in a manner in which the vehicle behavior will change over a shorter zone when the entire zone is short,the gradual change processor circuit is configured to change the simple model to the driving model such that the amount of change in vehicle behavior from the start of the specific driving operation to the end thereof is increased on a basis of a constant rate of change, then the amount of change is kept constant, and then the amount of change is decreased on the basis of the constant rate of change,the specific driving operation is one slowing down operation, one speeding up operation, or one braking operation,the start of the specific driving operation corresponds to a beginning of the entire zone,the end of the specific driving operation corresponds to an end of the entire zone,the driving support system comprises a driving support circuit configured to guide driving operation of the vehicle by an evaluation-target driver into a driving operation in compliance with the driving model using a vehicle driving system mounted on the vehicle providing vehicle control guidance, andthe driving support system supports the driving operation of the vehicle based on a comparison of the driving model generated by the model generator circuit and the vehicle state quantity detected by the state quantity detector sensor.

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