Braking intensity indicator system including selective adjustment of brake pedal light and related methods

• US 9,409,513 B2
• Filed: 12/30/2014
• Issued: 08/09/2016
• Est. Priority Date: 12/30/2014
• Status: Active Grant

• Current Assignee: STMicroelectronics International N.V. (STMicroelectronics NV)
• Original Assignee: STMicroelectronics Incorporated (STMicroelectronics NV)
• Inventors: Weiner, Kenneth, Bloomfield, John
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US14/585,374
• Publication Number:
  US 20160185283A1
• Time in Patent Office: 588 Days
• US Class Current: 1/1
• CPC Class Codes: B60Q 1/44 for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
• CPC Class Codes: B60Q 1/441 Electric switches operable by the driver's pedals
• CPC Class Codes: B60Q 1/444 with indication of the braking strength or speed changes, e.g. by changing shape or intensity of the indication B60Q1/1407, B60Q1/442, B60Q1/447 take precedence

Abstract

A braking intensity indicator system for a vehicle of a type that includes a foot operated brake pedal and at least one brake light may include a proximity sensor to be associated with the brake pedal and a controller. The controller may be configured to cooperate with the proximity sensor to determine a plurality of brake pedal positions versus time during foot operation of the brake pedal, and selectively adjust an intensity of the at least one brake light based upon the determined plurality of brake pedal positions versus time.

Claims

1. A braking intensity indicator system for a vehicle of a type comprising a foot operated brake pedal and at least one brake light, the braking intensity indicator system comprising:

a proximity sensor to be associated with the brake pedal; and

a controller configured to

cooperate with said proximity sensor to determine a plurality of brake pedal positions versus time during foot operation of the brake pedal, and

selectively adjust an intensity of the at least one brake light based upon the determined plurality of brake pedal positions versus time.

2. The braking intensity indicator system of claim 1 wherein said proximity sensor comprises an optical proximity sensor.

3. The braking intensity indicator system of claim 1 wherein said proximity sensor comprises an infrared (IR) emitter, and an IR sensor configured to receive reflected IR radiation from said IR emitter.

4. The braking intensity indicator system of claim 3 wherein said IR emitter comprises an IR laser emitter.

5. The braking intensity indicator system of claim 3 wherein said proximity sensor further comprises an ambient light sensor;

and wherein said controller is configured to adjust a dynamic range of said IR sensor based upon the ambient light.

6. The braking intensity indicator system of claim 1 wherein said proximity sensor comprises a time-of-flight sensor.

7. The braking intensity indicator system of claim 1 wherein said controller is configured to determine an acceleration of the brake pedal based upon the plurality of brake pedal positions versus time.

8. The braking intensity indicator system of claim 7 wherein said controller is configured to selectively adjust the intensity of the at least one brake light based upon the determined acceleration exceeding a threshold.

9. The braking intensity indicator system of claim 1 wherein said proximity sensor comprises at least one mounting element for mounting to the brake pedal.

10. The braking intensity indicator system of claim 1 wherein said proximity sensor comprises at least one mounting element for mounting in the footwell adjacent the brake pedal.

11. The braking intensity indicator system of claim 1 wherein said controller is configured to selectively adjust the intensity of the at least one brake light by at least one of adjusting a brightness, changing a color, changing a flashing frequency, and operating an additional brake light.

12. A braking intensity indicator system for a vehicle of a type comprising a foot operated brake pedal and at least one brake light, the braking intensity indicator system comprising:

an optical proximity sensor to be associated with the brake pedal; and

a controller configured to

cooperate with said proximity sensor to determine a plurality of brake pedal positions versus time during foot operation of the brake pedal,

determine an acceleration of the brake pedal based upon the plurality of brake pedal positions versus time, and

selectively adjust an intensity of the at least one brake light based upon the determined acceleration.

13. The braking intensity indicator system of claim 12 wherein said proximity sensor comprises an infrared (IR) emitter, and an IR sensor configured to receive reflected IR radiation from said IR emitter.

14. The braking intensity indicator system of claim 13 wherein said IR emitter comprises an IR laser emitter.

15. The braking intensity indicator system of claim 13 wherein said proximity sensor further comprises an ambient light sensor;

and wherein said controller is configured to adjust a dynamic range of said IR sensor based upon the ambient light.

16. The braking intensity indicator system of claim 12 wherein said proximity sensor comprises a time-of-flight sensor.

17. A method of selectively adjusting an intensity of at least one brake light of a vehicle, the method comprising:

using a controller to

cooperate with a proximity sensor associated with the foot operated brake pedal of the vehicle to determine a plurality of brake pedal positions versus time during foot operation of the brake pedal, and

selectively adjust the intensity of the at least one brake light based upon the determined plurality of brake pedal positions versus time.

18. The method of claim 17 wherein the proximity sensor comprises an optical proximity sensor.

19. The method of claim 17 wherein the proximity sensor comprises an infrared (IR) emitter, and an IR sensor configured to receive reflected IR radiation from the IR emitter.

20. The method of claim 19 wherein the proximity sensor further comprises an ambient light sensor;

and using the controller comprises using the controller to adjust a dynamic range of the IR sensor based upon the ambient light.

21. The method of claim 17 wherein the proximity sensor comprises a time-of-flight sensor.

22. The method of claim 17 wherein using the controller comprises using the controller to determine an acceleration of the brake pedal based upon the plurality of brake pedal positions versus time.

23. The method of claim 22 wherein using the controller comprises using the controller to selectively adjust the intensity of the at least one brake light based upon the determined acceleration exceeding a threshold.