Method for assessing actuations of the accelerator by a vehicle driver to detect nervousness

• US 6,295,000 B1
• Filed: 07/17/1998
• Issued: 09/25/2001
• Est. Priority Date: 07/18/1997
• Status: Expired due to Fees

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Inventors: Kuhn, Klaus-Peter, Strenkert, Jochen
• Primary Examiner(s): TONG, NINA C
• Application Number:
  US09/118,986
• Time in Patent Office: 1,166 Days
• Field of Search: 340/576, 340/439, 340/438, 340/441, 340/575, 180/272, 434/258, 701/1, 701/70
• US Class Current: 340/576
• CPC Class Codes: A61B 5/18 for vehicle drivers or machine operators
• CPC Class Codes: A61B 5/7239 using differentiation including higher order derivatives
• CPC Class Codes: B60G 2800/704 predicting unorthodox driving conditions for safe or optimal driving
• CPC Class Codes: B60R 16/037 for occupant comfort , e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel

Abstract

A method for assessing actuations of the accelerator by a vehicle driver to detect the nervousness of the driver, the cumulative path covered by the accelerator, in terms of amount, being evaluated within a predefined time window when the change in velocity is less than a predetermined threshold value and/or the change in position of the accelerator is less than a predetermined threshold value within this time window. Furthermore, alternatively and/or additionally, the number of reversals of the algebraic sign of the time derivation of the accelerator position can be taken into account.

Claims

1. A method for assessing actuations of an accelerator pedal by a driver of a vehicle to detect a nervous driver condition comprising the steps of:

evaluating a cumulative amount traveled by the accelerator pedal within a predefined time period when at least one of a change in velocity of the vehicle is less than a first predetermined threshold value within the predefined time period and a change in a position of the accelerator pedal is less than a second predetermined threshold value within the predefined time period; and

using at least the cumulative amount traveled so as to detect the nervous driver condition.

2. The method as recited in claim 1 further comprising the steps of:

evaluating a number of times an algebraic sign of a time differentiation of the position of the accelerator pedal changes so as to form a further criterion;

forming a weighted sum as a function of the cumulative amount traveled and as a function of the further criterion; and

forming a degree of activity of the vehicle driver as a function of the weighted sum.

3. The method as recited in claim 2 further comprising filtering the degree of activity as a function of the algebraic sign.

4. The method as recited in claim 2 further comprising the step of assessing a driving technique of the driver as steadier or sportier, and recognizing the nervous driver condition when the degree of activity exceeds a certain amount and the driving technique is not assessed as sportier.

5. The method as recited in claim 1 further comprising the steps of:

determining an activity of the vehicle driver;

assessing a driving technique of the driver as steadier or sportier; and

assessing that the nervous driver condition exists when the activity exceeds a certain amount and the driving technique is not assessed as sportier.

6. The method as recited in claim 1 further comprising the step of setting a bit when the nervous driver condition is recognized and deleting the bit when conditions for the recognition of the nervous driver condition no longer exist and the position of the accelerator pedal equals zero.

7. A method for assessing actuations of an accelerator pedal by a driver of a vehicle to detect a nervous driver condition comprising the steps of:

evaluating a cumulative amount traveled by the accelerator pedal within a predefined time period when a change in velocity of the vehicle is less than a predetermined threshold value within the predefined time period; and

using at least the cumulative amount traveled so as to detect the nervous driver condition.

8. A method for assessing actuations of an accelerator pedal by a driver of a vehicle to detect a nervous driver condition comprising the steps of:

evaluating a cumulative amount traveled by the accelerator pedal within a predefined time period when a change in a position of the accelerator pedal is less than a predetermined threshold value within the predefined time period; and

using at least the cumulative amount traveled so as to detect the nervous driver condition.