Operation assist apparatus

• US 8,280,602 B2
• Filed: 08/01/2007
• Issued: 10/02/2012
• Est. Priority Date: 08/03/2006
• Status: Active Grant

• Current Assignee: Nara Institute of Science and Technology, National University Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Nara Institute of Science and Technology, National University Corporation, Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Uechi, Masaaki, Sasaki, Kazuya, Kobana, Masumi, Nishitani, Hirokazu, Kosaka, Hiroaki
• Primary Examiner(s): Black, Thomas
• Assistant Examiner(s): MARC-COLEMAN, MARTHE Y
• Application Number:
  US12/297,646
• Publication Number:
  US 20090069994A1
• Time in Patent Office: 1,889 Days
• Field of Search: 701/41, 701/70, 701/36, 340/522, 340/439, 340/435, 340/576
• US Class Current: 701/70
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle
• CPC Class Codes: B60W 2050/0014 Adaptive controllers
• CPC Class Codes: B60W 40/08 related to drivers or passengers

Abstract

An operation assist apparatus including: an assist controller that assists a driver of a vehicle in operating the vehicle before a stop point; and a watching action detector that detects a watching action of the driver for watching the stop point. The assist controller changes an assist manner in which to assist the vehicle operation by the driver in accordance with whether the watching action is detected by the watching action detector during deceleration of the vehicle. Thus configured, the operation assist apparatus can accurately determine whether the driver will stop the vehicle at the stop point and thus can perform the vehicle operation assist appropriately.

Claims

1. An operation assist apparatus, comprising:

an assist controller that assists a driver of a vehicle in operating the vehicle before a stop point;

a watching action detector configured to detect a watching action of the driver to determine if the driver is watching the stop point; and

a deceleration operation detector configured to detect a deceleration operation by the driver, wherein

the assist controller changes an assist manner that assists the vehicle operation by the driver based on both of whether the watching action detector has determined that the driver is watching the stop point and whether the deceleration operation detector has detected a deceleration operation by the driver.

2. The operation assist apparatus according to claim 1, wherein

the assist controller changes the assist manner so as to advance the timing to start assisting the vehicle operation by the driver if the watching action was not detected during deceleration of the vehicle.

3. The operation assist apparatus according to claim 2, further comprising:

a sightline direction detector that detects the direction of the driver'"'"'s sightline; and

an indicator position detector that detects the position of an indicator associated with the stop point, wherein

the watching action detector detects the watching action of the driver based on the direction of the driver'"'"'s sightline that has been detected by the sightline direction detector and the position of the indicator that has been detected by the indicator position detector.

4. The operation assist apparatus according to claim 2, further comprising:

a stop point position detector that detects the position of a stop point that is present ahead of the vehicle in the traveling direction of the vehicle; and

a setting device that, when a stop point position has been detected by the stop point position detector and a deceleration operation by the driver has been detected by the deceleration operation detector, sets a watching action detection period during which to detect a watching action of the driver, based on the time the deceleration operation was started, wherein

the assist controller changes the assist manner in accordance with whether a watching action was detected during the watching action detection period set by the setting device.

5. The operation assist apparatus according to claim 4, wherein

the setting device estimates a time needed to stop the vehicle and factors in the estimated time when setting the watching action detection period.

6. The operation assist apparatus according to claim 5, further comprising:

a watching timing learning device that learns a timing at which the driver takes a watching action, wherein

the setting device corrects the watching action detection period in accordance with the timing learned by the watching timing learning device.

7. The operation assist apparatus according to claim 5, further comprising:

a delay time obtaining device that obtains a delay time of a watching action based on external conditions surrounding the vehicle and a state of the driver, wherein

the setting device corrects the watching action detection period in accordance with the delay time obtained by the delay time obtaining device.

8. The operation assist apparatus according to claim 1, further comprising:

a recording device that keeps a vehicle passage record for each stop point;

a watch object learning device that, when the vehicle is about to pass through a stop point that is recorded in the recording device as the stop point that the vehicle has ever passed through, learns a watch object other than a road sign associated with the stop point, wherein

the watching action detector detects a watching action of the driver for watching the watch object learned by the watch object learning device and identifies the detected watching action as a watching action for watching the stop point.

9. The operation assist apparatus according to claim 1, wherein

the assist controller assists the vehicle operation by the driver by automatically adjusting the braking force to be applied to the vehicle.

10. The operation assist apparatus according to claim 1, further comprising:

a sightline direction detector that detects the direction of the driver'"'"'s sightline; and

an indicator position detector that detects the position of an indicator associated with the stop point, wherein

the watching action detector detects the watching action of the driver based on the direction of the driver'"'"'s sightline that has been detected by the sightline direction detector and the position of the indicator that has been detected by the indicator position detector.

11. The operation assist apparatus according to claim 10, further comprising:

a stop point position detector that detects the position of a stop point that is present ahead of the vehicle in the traveling direction of the vehicle;

a deceleration operation detector that detects a deceleration operation by the driver; and

a setting device that, when a stop point position has been detected by the stop point position detector and a deceleration operation by the driver has been detected by the deceleration operation detector, sets a watching action detection period during which to detect a watching action of the driver, based on the time the deceleration operation was started, wherein

the assist controller changes the assist manner in accordance with whether a watching action was detected during the watching action detection period set by the setting device.

12. The operation assist apparatus according to claim 11, wherein

the setting device estimates a time needed to stop the vehicle and factors in the estimated time when setting the watching action detection period.

13. The operation assist apparatus according to claim 12, further comprising:

a watching timing learning device that learns a timing at which the driver takes a watching action, wherein

the setting device corrects the watching action detection period in accordance with the timing learned by the watching timing learning device.

14. The operation assist apparatus according to claim 12, further comprising:

a delay time obtaining device that obtains a delay time of a watching action based on external conditions surrounding the vehicle and a state of the driver, wherein

the setting device corrects the watching action detection period in accordance with the delay time obtained by the delay time obtaining device.

15. The operation assist apparatus according to claim 1, further comprising:

a stop point position detector that detects the position of a stop point that is present ahead of the vehicle in the traveling direction of the vehicle;

a deceleration operation detector that detects a deceleration operation by the driver; and

a setting device that, when a stop point position has been detected by the stop point position detector and a deceleration operation by the driver has been detected by the deceleration operation detector, sets a watching action detection period during which to detect a watching action of the driver, based on the time the deceleration operation was started, wherein

the assist controller changes the assist manner in accordance with whether a watching action was detected during the watching action detection period set by the setting device.

16. The operation assist apparatus according to claim 15, wherein the setting device estimates a time needed to stop the vehicle and factors in the estimated time when setting the watching action detection period.

17. The operation assist apparatus according to claim 16, further comprising:

a watching timing learning device that learns a timing at which the driver takes a watching action, wherein

the setting device corrects the watching action detection period in accordance with the timing learned by the watching timing learning device.

18. The operation assist apparatus according to claim 16, further comprising:

a delay time obtaining device that obtains a delay time of a watching action based on external conditions surrounding the vehicle and a state of the driver, wherein

the setting device corrects the watching action detection period in accordance with the delay time obtained by the delay time obtaining device.