Driving information system with haptic notification seat

• US 20050187684A1
• Filed: 02/09/2005
• Published: 08/25/2005
• Est. Priority Date: 02/09/2004
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Egami, Masahiro, Hijikata, Shunsuke
• Granted Patent: US 7,228,212 B2
• Time in Patent Office: Days
• US Class Current: 701/45
• CPC Class Codes: B60N 2/6009 covering more than only the seat

Abstract

A driving information system that conveys driving condition information to a driver of a vehicle via a haptic notification seat. A signal representing a driving condition, such as a lateral position of the vehicle, is generated. Two haptic signals are provided and regulated in specific ways to provide the driving condition to the driver: a first haptic input to the driver from a first portion of the seat, and a second haptic input to the driver from a second portion of the seat.

Claims

1. A system for providing driving condition information to a driver of a vehicle occupying a driver seat having a first portion and a second portion, the system comprising:

a sensor for sensing a driving condition; and

a controlling device configured to regulate at least one of a first haptic signal applied to the driver from the first portion of the seat and a second haptic signal applied to the driver from the second portion of the seat, based on the driving condition;

wherein responsive to the driving condition representing that the vehicle is traveling about a determined centerline of a lane on which the vehicle is being driven, the first haptic signal and the second haptic signal are substantially equal.

2. The system of claim 2, wherein responsive to the driving condition representing that the vehicle is deviating from the determined centerline, the controlling device is configured to regulate at least one of the first haptic signal and the second haptic signal such that a difference between the first haptic signal and the second haptic signal exceeds a predetermined value.

3. The system of claim 2, wherein the first portion of the seat corresponds to a first boundary of the lane, and the second portion of the seat corresponds to a second boundary of the lane.

4. The system of claim 3, wherein responsive to the driving condition representing that the vehicle is deviating from the determined centerline towards one of a first boundary and a second boundary of the lane, the controlling device varies the corresponding one of the first haptic signal and the second haptic signal, in which the selected haptic signal is varied at more than one rate with respect to a lateral position of the vehicle relative to the determined centerline.

5. The system of claim 3, wherein responsive to the driving condition representing that the vehicle deviates from the determined centerline towards the first boundary beyond a predetermined range, the controlling device causes the second haptic signal second haptic signal to assume the minimum value.

6. The system of claim 3, wherein responsive to the driving condition representing that the vehicle deviates from the determined centerline towards the first boundary beyond a predetermined range, the controlling device causes the first haptic signal second haptic signal to assume the maximum value.

7. The system of claim 3, wherein responsive to the driving condition representing that the vehicle deviates from the determined centerline towards the first boundary beyond a predetermined range, the controlling device sets a change rate of the first haptic signal to assume the maximum value.

8. The system of claim 3, wherein responsive to the driving condition representing that the vehicle deviates from the determined centerline towards the first boundary beyond a predetermined range, the controlling device sets a change rate of the second haptic signal to assume the minimum value.

9. The system of claim 3, wherein responsive to the driving condition representing that the vehicle deviates from the determined centerline towards the first boundary beyond a predetermined range, the controlling device decreases the first haptic signal.

10. The system of claim 3, wherein responsive to the driving condition representing that the vehicle deviates from the determined centerline towards the first boundary beyond a predetermined range, the controlling device increases the second haptic signal.

11. The system of claim 2, wherein responsive to the driving condition representing that the vehicle has changed to a new lane, the controlling device controls the first haptic signal and the second haptic signal to gradually assume values corresponding to the new lane.

12. A vehicle comprising:

a seat configured to be occupied by a driver operating the vehicle;

a sensor for sensing a driving condition; and

a controlling device configured to regulate at least one of a first haptic signal applied to the driver from a first portion of the seat and a second haptic signal applied to the driver from a second portion of the seat, based on the driving condition;

wherein responsive to the driving condition representing that the vehicle is traveling about a determined centerline of a lane on which the vehicle is being driven, the first haptic signal and the second haptic signal are substantially equal.

13. A method for providing driving condition information to a driver of a vehicle occupying a driver seat having a first portion and a second portion, the method comprising the steps of:

generating a driving condition signal representing a driving condition of the vehicle; and

regulating at least one of a first haptic signal applied to the driver from the first portion of the seat and a second haptic signal applied to the driver from the second portion of the seat, based on the driving condition;

wherein responsive to the driving condition representing that the vehicle is traveling about a determined centerline of the lane on which the vehicle is being driven, the first haptic signal and the second haptic signal are substantially equal.

14. The method of claim 13, wherein responsive to the driving condition representing that the vehicle is deviating from the determined centerline relative to the determined centerline, regulating at least one of the first haptic signal and the second haptic signal such that a difference between the first haptic signal and the second haptic signal exceeds a predetermined value.

15. A system for providing driving condition information to a driver of a vehicle occupying a driver seat having a first portion and a second portion, the system comprising:

means for generating a driving condition signal representing a driving condition of the vehicle; and

means for regulating at least one of a first haptic signal applied to the driver from the first portion of the seat and a second haptic signal applied to the driver from the second portion of the seat, based on the driving condition;

wherein responsive to the driving condition representing that the vehicle is traveling about a determined centerline of the lane on which the vehicle is being driven, the first haptic signal and the second haptic signal are substantially equal.

16. A system for providing driving condition information to a driver of a vehicle occupying a driver seat having a first portion and a second portion, the system comprising:

a sensor for obtaining a driving condition of the vehicle; and

a controlling device configured to perform the steps of;

determining that the vehicle is being driven on a first lane based on the obtained driving condition;

based on the driving condition, determining an event that the vehicle is crossing or has crossed a lane boundary between the first lane and a second lane next to the first lane;

responsive to the event, determining a positional relationship of the vehicle relative to the second lane; and

providing a haptic signal to the driver from the seat based on the positional relationship of the vehicle relative to the second lane.

17. The system of claim 16, wherein the haptic signal includes a first haptic signal to the driver from a first portion of the seat and a second haptic signal to the driver from a second portion of the seat.

18. The system of claim 17, wherein the first haptic signal and the second haptic signal are substantially equal immediately before the vehicle is crossing the lane boundary between the first lane and the second lane.

19. The system of claim 17, wherein the controlling device is further configured to perform the steps of:

determining a centerline of the first lane;

determining a position of the vehicle relative to the centerline of the first lane; and

responsive to the position of the vehicle deviating from the centerline of the first lane, regulating the first haptic signal and the second haptic signal such that a difference between the first haptic signal and the second haptic signal exceeds a predetermined value.

20. The system of claim 17, wherein the controlling device is further configured to perform the following steps in response to the event:

determining a centerline of the second lane;

determining the position of the vehicle relative to the centerline of the second lane; and

regulating the first haptic signal and the second haptic signal based on the position of the vehicle relative to the centerline of the second lane.

21. A method for providing driving condition information to a driver of a vehicle occupying a driver seat having a first portion and a second portion, the method comprising the steps:

obtaining a driving condition of the vehicle;

determining that the vehicle is being driven on a first lane based on the obtained driving condition;

based on the driving condition, determining an event that the vehicle is crossing or has crossed a lane boundary between the first lane and a second lane next to the second lane;

responsive to the event, determining a lateral positional relationship of the vehicle relative to the second lane; and

providing a haptic signal to the driver from the seat based on the lateral positional relationship of the vehicle relative to the second lane.

22. A vehicle comprising:

a seat configured to be occupied by a driver operating the vehicle;

a sensor for obtaining a driving condition of the vehicle; and

a controlling device configured to perform the steps of;

determining that the vehicle is being driven on a first lane based on the obtained driving condition;

based on the driving condition, determining an event that the vehicle is crossing or has crossed a lane boundary between the first lane and a second lane next to the first lane;

responsive to the event, determining a positional relationship of the vehicle relative to the second lane; and

providing a haptic signal to the driver from the seat based on the positional relationship of the vehicle relative to the second lane.