Driving evaluation method and recording medium for driving evaluation encoded with a program

Patent metadata

Field	Value
Publication number	US-2024425060-A1
Application number	US-202418738759-A
Country	US
Kind code	A1
Filing date	Jun 10, 2024
Priority date	Jun 21, 2023
Publication date	Dec 26, 2024
Grant date	—

Abstract

A driving evaluation method includes acquiring a tire force, calculating a proportion, and calculating an evaluation value. The acquiring of the tire force acquires a tire force generating while a vehicle is running. The calculating of the proportion calculates the proportion value by dividing the tire force acquired by the acquiring of the tire force by a load value. The calculating of the evaluation calculates the evaluation value by integrating the tire force for which the proportion value acquired by the calculating of the proportion value belongs to a range defined by a threshold value.

First claim

What is claimed is:

1 . A driving evaluation method comprising:
acquiring a tire force generating while a vehicle is running; calculating a proportion value by dividing the tire force acquired by the acquiring of the tire force by a load value; and calculating an evaluation value by integrating the tire force for which the proportion value acquired by the calculating of the proportion value belongs to a range defined by a threshold value.

2 . The driving evaluation method according to claim 1 ,
wherein the calculating of the evaluation value calculates the evaluation value by integrating the tire force extracted based on at least one of a weight balance or a drive wheel of the vehicle.

3 . The driving evaluation method according to claim 1 ,
wherein the calculating of the evaluation value calculates, when the vehicle is rear-wheel driven, the evaluation value by integrating the tire force in a front tire at the time of braking and the tire force in a rear tire at the time of driving.

4 . The driving evaluation method according to claim 1 ,
wherein the calculating of the evaluation value calculates, when the vehicle is front-wheel driven, the evaluation value by integrating the tire force in a front tire at the time of braking and the tire force in the front tire at the time of driving.

5 . The driving evaluation method according to claim 1 ,
wherein the calculating of the proportion value calculates the proportion value by dividing longitudinal and lateral tire forces by the load value.

6 . The driving evaluation method according to claim 1 ,
wherein the acquiring of the tire force acquires the tire force calculated by using a learning type arithmetic operation model that receives, in an input layer, an input of data having periodicity per rotation of the tire and outputs the tire force from an output layer.

7 . The driving evaluation method according to claim 1 , comprising:
calculating an index value from the evaluation value calculated by the calculating of the evaluation value, based on a predetermined reference value.

8 . The driving evaluation method according to claim 7 ,
wherein the calculating of the index value determines a proportion of the evaluation value, calculated by the calculating of the evaluation value, relative to the reference value as the index value.

9 . The driving evaluation method according to claim 7 ,
wherein the calculating of the index value calculates an index value at the time of braking the vehicle and an index value at the time of driving the vehicle.

10 . The driving evaluation method according to claim 7 , further comprising:
determining a detail of improvement of a driving skill based on the index value calculated by the calculating of the index value.

11 . The driving evaluation method according to claim 7 , further comprising:
displaying the index value calculated by the calculating of the index value on a display.

12 . The driving evaluation method according to claim 11 ,
wherein the displaying displays a lap time on the display along with the index value.

13 . A non-volatile recording medium for driving evaluation encoded with a program, the program comprising computer-implemented modules including:
a tire force acquisition module that acquires a tire force generating while a vehicle is running; an evaluation value calculation module that calculates an evaluation value by integrating the tire force acquired by the tire force acquisition module; and an index value calculation module that calculates an index value from the evaluation value calculated by the evaluation value calculation module, based on a predetermined reference value.

14 . A driving evaluation method comprising:
acquiring information measured in a vehicle including acceleration data for the vehicle; extracting, of the acceleration data acquired by the acquiring of the information, acceleration data belonging to a range defined by a predetermined threshold value; and calculating an evaluation value by integrating the acceleration data extracted by the extracting of the acceleration data.

15 . The driving evaluation method according to claim 14 ,
wherein the calculating of the evaluation value categorizes data into data on a deceleration side and data on an acceleration side, calculates an evaluation value derived from integrating the data on the deceleration side and an evaluation value derived from integrating the data on the acceleration side, and adds an integrated value of the data on the deceleration side and an integrated value of the data on the acceleration side.

Assignees

• Toyo Tire Corp

Inventors

• Hasegawa Hiroshige

Classifications

• B60W2530/20

  Tyre data · CPC title

• B60W2530/10

  Weight · CPC title

• B60W2520/105

  Longitudinal acceleration · CPC title

• B60W2050/146

  Display means · CPC title

• B60W50/14

  Means for informing the driver, warning the driver or prompting a driver intervention · CPC title