Methods and systems for controlling external visual indicators for vehicles

• US 8,026,800 B2
• Filed: 08/26/2008
• Issued: 09/27/2011
• Est. Priority Date: 08/26/2008
• Status: Expired due to Fees

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Person, Mark J.
• Primary Examiner(s): HUNNINGS, TRAVIS R
• Application Number:
  US12/198,600
• Publication Number:
  US 20100052883A1
• Time in Patent Office: 1,127 Days
• Field of Search: 340/435, 340/463, 340/468, 340/469, 340/471, 340/472
• US Class Current: 340/435
• CPC Class Codes: B60Q 1/381 with several light sources activated in sequence, e.g. to create a sweep effect
• CPC Class Codes: B60Q 1/46 for giving flashing caution signals during drive, other than signalling change of direction, e.g. flashing the headlights or hazard lights
• CPC Class Codes: B60Q 1/535 to prevent rear-end collisions, e.g. by indicating safety distance at the rear of the vehicle
• CPC Class Codes: G08G 1/167 Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

A method for controlling operation of an external visual indicator includes the steps of determining whether a second vehicle is approaching the first vehicle, and modifying the external visual indicator if the second vehicle is approaching the first vehicle.

Claims

1. A method of controlling operation of an external visual indicator for a first vehicle, the method comprising the steps of:

determining whether a second vehicle is approaching the first vehicle;

determining a frequency of other vehicles approaching the first vehicle over a time period; and

modifying the external visual indicator if the second vehicle is approaching the first vehicle and the frequency is less than a predetermined threshold.

2. The method of claim 1, wherein:

the external visual indicator comprises a light having a blinking rate; and

the step of modifying the external visual indicator comprises the step of increasing the blinking rate of the light if the second vehicle is approaching the first vehicle and the frequency is less than the predetermined threshold.

3. The method of claim 1, wherein:

the external visual indicator comprises a light having a visual intensity; and

the step of modifying the external visual indicator comprises the step of increasing the visual intensity of the light if the second vehicle is approaching the first vehicle and the frequency is less than the predetermined threshold.

4. The method of claim 1, wherein the external visual indicator comprises a hazard light, and the method further comprises the steps of:

determining whether the first vehicle is moving; and

determining a path in which the second vehicle is traveling;

wherein the step of modifying the external visual indicator comprises the step of increasing a blinking rate of the hazard light, a visual intensity of the hazard light, or both, if either (a) or (b) below are satisfied and, if the vehicle is not moving, provided further that the frequency is less than the predetermined threshold;

(a) the first vehicle is moving, the second vehicle is approaching the first vehicle, the paths of the first vehicle and the second vehicle will intersect or run parallel in a manner that will result in a collision between the first and second vehicles if the first and second vehicles continue in their respective paths;

or

(b) the first vehicle is not moving, the second vehicle is approaching the first vehicle, and the path of the second vehicle is proximate to a position of the first vehicle.

5. The method of claim 1, further comprising the step of:

determining whether the vehicle is moving;

wherein the step of modifying the external visual indicator comprises the step of modifying the external visual indicator, regardless of the frequency, if the vehicle is moving.

6. The method of claim 1, wherein:

the external visual indicator comprises a turn signal; and

the step of determining whether the second vehicle is approaching the first vehicle comprises the step of determining whether the second vehicle is moving into an intended path of the first vehicle.

7. The method of claim 6, wherein the step of modifying the external visual indicator comprises the step of increasing a blinking rate of the turn signal, a visual intensity of the turn signal, or both, if the second vehicle is moving into the intended path of the first vehicle and the frequency is less than the predetermined threshold.

8. A program product for controlling operation of an external visual indicator for a first vehicle, the program product comprising:

a program configured to at least facilitate;

determining whether a second vehicle is approaching the first vehicle;

determining a frequency of other vehicles approaching the first vehicle over a time period; and

modifying the external visual indicator if the second vehicle is approaching the first vehicle; and

the frequency is less than a predetermined threshold; and

a non-transitory computer readable storage medium storing the program.

9. The program product of claim 8, wherein:

the external visual indicator comprises a light having a blinking rate; and

the program is configured to at least facilitate increasing the blinking rate of the light if the second vehicle is approaching the first vehicle and the frequency is less than the predetermined threshold.

10. The program product of claim 8, wherein:

the external visual indicator comprises a light having a visual intensity; and

the program is configured to at least facilitate increasing the visual intensity of the light if the second vehicle is approaching the first vehicle and the frequency is less than the predetermined threshold.

11. The program product of claim 8, wherein:

the external visual indicator comprises a hazard light; and

the program is configured to at least facilitate;

determining whether the first vehicle is moving;

determining a path in which the second vehicle is traveling; and

increasing a blinking rate of the hazard light, a visual intensity of the hazard light, or both, if either (a) or (b) below are satisfied and, if the vehicle is not moving, provided further that the frequency is less than the predetermined threshold;

(a) the first vehicle is moving, the second vehicle is approaching the first vehicle, and the first vehicle is also traveling in the path;

or

(b) the first vehicle is not moving, the second vehicle is approaching the first vehicle, and the path of the second vehicle is proximate to a position of the first vehicle.

12. The program product of claim 8, wherein the program is further configured to at least facilitate:

determining whether the vehicle is moving; and

modifying the external visual indicator, regardless of the frequency, if the vehicle is moving.

13. The program product of claim 8, wherein:

the external visual indicator comprises a turn signal; and

the program is configured to at least facilitate;

determining whether the second vehicle is moving into an intended path of the first vehicle; and

increasing a blinking rate of the turn signal, a visual intensity of the turn signal, or both, if the second vehicle is moving into the intended path of the first vehicle and the frequency is less than the predetermined threshold.

14. A system for controlling operation of an external visual indicator for a first vehicle, the system comprising:

program product comprising;

a detection unit configured to at least facilitate obtaining;

information regarding the first vehicle and a second vehicle; and

additional information as to additional vehicles approaching the first vehicle over a time period; and

a controller configured to be coupled to the detection unit and to the external visual indicator, the controller configured to at least facilitate;

determining, based at least in part on the information, whether the second vehicle is approaching the first vehicle;

determining, based at least in part on the additional information, a frequency of other vehicles approaching the first vehicle over the time period; and

modifying the external visual indicator if the second vehicle is approaching the first vehicle and the frequency is less than a predetermined threshold.

15. The system of claim 14, wherein:

the detection unit comprises a radar; and

the controller comprises a processor.

16. The system of claim 14, wherein:

the external visual indicator comprises a light having a blinking rate; and

the controller is configured to at least facilitate increasing the blinking rate of the light if the second vehicle is approaching the first vehicle and the frequency is less than the predetermined threshold.

17. The system of claim 14, wherein:

the external visual indicator comprises a light having a visual intensity; and

the controller is configured to at least facilitate increasing the visual intensity of the light if the second vehicle is approaching the first vehicle and the frequency is less than the predetermined threshold.

18. The system of claim 14, wherein:

the external visual indicator comprises a hazard light; and

the controller is configured to at least facilitate;

determining, based at least in part on the information, whether the first vehicle is moving; and

determining, based at least in part on the information, a path in which the second vehicle is traveling; and

increasing a blinking rate of the hazard light, a visual intensity of the hazard light, or both, if either (a) or (b) below are satisfied and, if the vehicle is not moving, provided further that the frequency is less than the predetermined threshold;

(a) the first vehicle is moving, the second vehicle is approaching the first vehicle, the paths of the first vehicle and the second vehicle will intersect or run parallel in a manner that will result in a collision between the first and second vehicles if the first and second vehicles continue in their respective paths;

or

(b) the first vehicle is not moving, the second vehicle is approaching the first vehicle, and the path of the second vehicle is proximate to a position of the first vehicle.

19. The system of claim 14, wherein:

the controller is further configured to at least facilitate;

determining whether the vehicle is moving; and

modifying the external visual indicator, regardless of the frequency, if the vehicle is moving.

20. The system of claim 14, wherein:

the external visual indicator comprises a turn signal; and

the controller is configured to at least facilitate;

determining, based at least in part on the information, whether the second vehicle is moving into an intended path of the first vehicle; and

increasing a blinking rate of the turn signal, a visual intensity of the turn signal, or both, if the second vehicle is moving into the intended path of the first vehicle and the frequency is less than the predetermined threshold.