SYSTEM FOR CONTROLLING VEHICLE EQUIPMENT

• US 20120116632A1
• Filed: 01/19/2012
• Published: 05/10/2012
• Est. Priority Date: 04/02/1997
• Status: Abandoned Application

• Current Assignee: Jon H. Bechtel, Joseph S. Stam
• Original Assignee: Jon H. Bechtel, Joseph S. Stam
• Inventors: Bechtel, Jon H., Stam, Joseph S.
• Application Number:
  US13/353,819
• Publication Number:
  US 20120116632A1
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60Q 1/1423 Automatic dimming circuits, i.e. switching between high beam and low beam due to change of ambient light or light level in road traffic
• CPC Class Codes: B60Q 2300/054 Variable non-standard intensity, i.e. emission of various beam intensities different from standard intensities, e.g. continuous or stepped transitions of intensity
• CPC Class Codes: B60Q 2300/312 Adverse weather
• CPC Class Codes: B60Q 2300/324 Road inclination, e.g. uphill or downhill
• CPC Class Codes: B60Q 2300/3321 Detection of streetlights
• CPC Class Codes: B60Q 2300/41 preceding vehicle
• CPC Class Codes: B60Q 2300/42 oncoming vehicle
• CPC Class Codes: B60Q 2300/45 Special conditions, e.g. pedestrians, road signs or potential dangers
• CPC Class Codes: G06V 10/147 Details of sensors, e.g. sensor lenses fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19
• CPC Class Codes: G06V 20/584 of vehicle lights or traffic lights
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/665 involving internal camera communication with the image sensor, e.g. synchronising or multiplexing SSIS control signals
• CPC Class Codes: H04N 23/843 Demosaicing, e.g. interpolating colour pixel values
• CPC Class Codes: H04N 25/00 Circuitry of solid-state image sensors [SSIS]; Control thereof
• CPC Class Codes: H04N 25/134 based on three different wavelength filter elements
• CPC Class Codes: H04N 25/443 by reading pixels from selected 2D regions of the array, e.g. for windowing or digital zooming
• CPC Class Codes: H04N 3/1562 for selective scanning, e.g. windowing, zooming

Abstract

A system for automatically controlling vehicle equipment includes a controller to generate control signals. The control signals are derived based on information obtained from the image sensor as well as other detected parameters pertaining to the detected light source(s), the vehicle having the inventive control system, and the ambient environment. The control circuit may simply turn certain vehicle equipment, for example exterior lights, on or off, or change the brightness, aim, focus, etc. to produce various beam patterns that maximize the illuminated area in front of the vehicle without causing excessive glare in the eyes of other drivers.

Claims

1. A vehicle control system comprising:

an image sensor having an array of pixels;

an infrared filter in optical communication with said image sensor, wherein said infrared filter is configured to filter infrared light; and

a controller in communication with said image sensor, said controller configured to receive at least a portion of at least one image acquired by said image sensor, wherein said controller is further configured to generate at least one vehicle control signal as a function of said at least a portion of at least one image;

wherein light received by said image sensor is filtered for infrared light, such that light emitted from an incandescent light source, which is emitted with infrared light, is filtered by said infrared filter so that substantially no infrared light is received by said image sensor;

wherein said controller is configured to detect light received from incandescent light source and light emitted from a light emitting diode (LED) based upon said infrared filter substantially filtering said infrared light from said light emitted by said incandescent light source.

2. The vehicle control system of claim 1, wherein said vehicle control signal is an automatic vehicle exterior light control signal.

3. The vehicle control system of claim 1, wherein said incandescent light source is an incandescent tail light of a leading vehicle.

4. The vehicle control system of claim 1, wherein said LED light source is an LED tail light of a leading vehicle.

5. The vehicle control system of claim 1, wherein said controller is configured to substantially balance out a detected brightness of said light received from said incandescent light source and said light received from said LED light source since said incandescent light source emits infrared light while said LED light source substantially does not emit infrared light.

6. The vehicle control system of claim 1, wherein said infrared filter is configured to filter infrared light, such that said infrared filter substantially prevents light of wavelengths longer than about 700 nm from being imaged by said image sensor.

7. The vehicle control system of claim 1, wherein said vehicle control signal is for an adaptive cruise control system.

8. The vehicle control system of claim 1, wherein said vehicle control signal is for a collision avoidance system.

9. The vehicle control system of claim 1 further comprising a radar system.

11. The vehicle control system of claim 9, wherein said distinguishing between said light sources comprises providing a lower AC component threshold for an upper area of a sensed image.

13. The vehicle control system of claim 11, wherein said distinguishing between said light sources comprises providing an intermediate threshold for the mid to lower left hand side of said sensed image.

14. The vehicle control system of claim 9, wherein said distinguishing between said light sources comprises detecting an AC modulation of said light source.

15. The vehicle control system of claim 9, wherein said vehicle control signal is an automatic vehicle exterior light control signal.

16. The vehicle control system of claim 9, wherein said vehicle control signal is for an adaptive cruise control system.

17. The vehicle control system of claim 9, wherein said vehicle control signal is for a collision avoidance system.

18. The vehicle control system of claim 9 further comprising a radar system.

10. A vehicle control system comprising:

an image sensor having an array of pixels; and

a controller in communication with said image sensor, said controller configured to receive at least a portion of at least one image acquired by said image sensor, wherein said controller is further configured to generate at least one vehicle control signal as a function of said at least a portion of at least one image;

wherein light received by said image sensor is light emitted from an alternating current (AC) light source;

wherein said controller is configured to distinguish between light received by said image sensor from said AC light source and light received by said image sensor from a headlamp of a vehicle at least partially based upon a position of said light source in said image.

12. The vehicle control system of claim 10, wherein said distinguishing between said light sources comprises providing a higher threshold for a mid to lower right hand side of said sensed image.