Adaptive vehicle communication controlled lighting system

• US 7,541,743 B2
• Filed: 10/22/2003
• Issued: 06/02/2009
• Est. Priority Date: 12/13/2002
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: DiMeo, David M., Salmeen, Irving Toivo, Alles, Sheran Anthony, Dassanayake, Mahendra Somasara, Wagner, David Anthony, Strumolo, Gary Steven, Miller, Ronald Hugh
• Primary Examiner(s): Owens; Douglas W.
• Assistant Examiner(s): A, MINH D
• Application Number:
  US10/605,733
• Publication Number:
  US 20040114381A1
• Time in Patent Office: 2,050 Days
• Field of Search: 315/77, 315/81, 315/82, 315/78, 315/79, 315/80, 362/37, 362/464, 362/324, 348/148, 348/143, 348/118
• US Class Current: 315/77
• CPC Class Codes: B60Q 1/085 due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers B60Q1/10, B60Q1/12, B60Q1/1423 take precedence
• CPC Class Codes: B60Q 2300/056 Special anti-blinding beams, e.g. a standard beam is chopped or moved in order not to blind
• CPC Class Codes: B60Q 2300/112 Vehicle speed
• CPC Class Codes: B60Q 2300/122 Steering angle
• CPC Class Codes: B60Q 2300/132 Pitch
• CPC Class Codes: B60Q 2300/134 Yaw
• CPC Class Codes: B60Q 2300/136 Roll
• CPC Class Codes: B60Q 2300/142 Turn signal actuation
• CPC Class Codes: B60Q 2300/312 Adverse weather
• CPC Class Codes: B60Q 2300/322 Road curvature
• CPC Class Codes: B60Q 2300/324 Road inclination, e.g. uphill or downhill
• 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: G01S 13/931 of land vehicles
• CPC Class Codes: G01S 2013/9316 combined with communication equipment with other vehicles or with base stations
• CPC Class Codes: G01S 2013/9319 Controlling the accelerator
• CPC Class Codes: G01S 2013/932 using own vehicle data, e.g. ground speed, steering wheel direction
• CPC Class Codes: G01S 2013/9321 Velocity regulation, e.g. cruise control
• CPC Class Codes: G01S 2013/9322 using additional data, e.g. driver condition, road state or weather data
• CPC Class Codes: G01S 2013/9323 : Alternative operation using light waves
• CPC Class Codes: G01S 2013/9324 : Alternative operation using ultrasonic waves
• CPC Class Codes: G01S 2013/9325 : for inter-vehicle distance regulation, e.g. navigating in platoons
• CPC Class Codes: G01S 2013/9329 : cooperating with reflectors or transponders

Abstract

A vehicle safety system (10) includes a light source (32). A beam-forming assembly (34) is optically coupled to the light source (32). An object detection sensor (16) detects an object and generates an object detection signal. A controller (18) is coupled to the beam-forming assembly (34) and the object detection sensor (16). The controller (18) adjusts illumination output of the vehicle safety system (10) in response to the object detection signal.

Claims

1. A vehicle safety system comprising:

at least one light source;

at least one beam-forming assembly optically coupled to said at least one light source;

at least one emitter optically coupled to said at least one beam-forming assembly;

at least one object detection sensor operable to detect at least one object and generate at least one object detection signal;

a controller coupled to said at least one beam-forming assembly and said at least one object detection sensor; and

a memory coupled to said controller and operable to store a plurality of selectable beam patterns;

wherein said controller is operable to select at least one beam pattern from said selectable beam patterns stored in said memory and accordingly control at least one said beam-forming assembly so as to configure light received from at least one said light source for emission via at least one said emitter to thereby produce at least one beam illumination pattern for enhancing visibility of a roadway;

wherein said controller is operable to select at least one other beam pattern from said selectable beam patterns in response to at least one said object detection signal so as to change at least one said beam illumination pattern emitted from at least one said emitter; and

wherein said controller is operable to change at least one said beam illumination pattern emitted from at least one said emitter in response to at least one said object detection signal by adjusting at least one beam illumination parameter selected from the group consisting of beam amplitude, beam location, beam focus, beam angle, and beam shape.

2. A vehicle safety system as in claim 1, wherein at least one said object detection sensor is a receiver and is operable to receive a communication signal from at least one said object, and said controller is operable to adjust at least one said beam illumination pattern in response to said communication signal.

3. A vehicle safety system as in claim 1, wherein at least one said object detection sensor is a passive object detection sensor.

4. A vehicle safety system as in claim 1, wherein at least one said object detection sensor is selected from the group consisting of a radio frequency transceiver, a radio frequency receiver, a radio frequency sensor, an infrared transceiver, an infrared receiver, an infrared sensor, a laser transceiver, and a laser sensor.

5. A vehicle safety system as in claim 1, wherein said vehicle safety system further comprises a transmitter coupled to said controller and operable to transmit a first communication signal, and at least one said object detection sensor is operable to receive a second communication signal in response to said first communication signal and adjust at least one said beam illumination pattern in response to said second communication signal.

6. A vehicle safety system as in claim 1, wherein said controller is operable to adjust at least one said beam illumination pattern in response to at least one vehicle operating condition.

7. A vehicle safety system as in claim 6, wherein at least one said vehicle operating condition is selected from the group consisting of velocity, speed, directional heading, acceleration, location, steering wheel angle, brake status, throttle angle, turn signal status, traction control status, differential wheel speed, light status, turn indicator status, windshield wiper status, windshield wiper speed, and engine speed.

8. A vehicle safety system as in claim 6, wherein said vehicle safety system further comprises a navigation system coupled to said controller, and said controller is operable to receive information related to at least a portion of said at least one vehicle operating condition from said navigation system.

9. A vehicle safety system as in claim 1, wherein said controller is operable to adjust a vehicle state in response to at least one said object detection signal.

10. A vehicle safety system as in claim 9, wherein said controller, for adjusting said vehicle state, is operable to adjust at least one vehicle operating condition selected from the group consisting of velocity, speed, directional heading, acceleration, location, steering wheel angle, brake status, throttle angle, turn signal status, traction control status, differential wheel speed, light status, turn indicator status, windshield wiper status, windshield wiper speed, and engine speed.

11. A vehicle safety system as in claim 9, wherein at least one said object detection sensor is operable to receive a cruise control signal, and said controller in response to said cruise control signal is operable to adjust said vehicle state.

12. A vehicle safety system as in claim 1, wherein said controller is operable to adjust a cruise control parameter in response to at least one said object detection signal.

13. A vehicle safety system as in claim 1, wherein said controller is operable to independently adjust each said beam illumination pattern that is emitted by each said emitter.

14. A vehicle safety system as in claim 1, wherein at least one said object detection signal is generated in response to illumination generated by and received from at least one said object.

15. A vehicle safety system as in claim 1, wherein at least one said object detection signal is generated in response to at least one communicative light signal generated by and received from at least one said object.

16. A vehicle safety system as in claim 1, wherein at least one said emitter is operable to emit a communicative light signal, and at least one said object detection sensor is operable to generate at least one said object detection signal in response to said communicative light signal.

17. A headlight system for a vehicle, said headlight system comprising:

at least one light source;

at least one beam-forming assembly optically coupled to said at least one light source;

at least one emitter optically coupled to said at least one beam-forming assembly;

a transmitter operable to generate a first communication signal;

a receiver operable to receive a second communication signal that is generated by an object external to said vehicle and in response to said first communication signal; and

a controller coupled to said at least one beam-forming assembly, said transmitter, and said receiver;

wherein said controller is operable to control at least one said beam-forming assembly so as to configure light received from at least one said light source for emission via at least one said emitter to thereby produce at least one beam illumination pattern for enhancing visibility of a roadway;

wherein each said beam illumination pattern has associated beam illumination parameters including beam angle, beam focus, beam amplitude, beam position, and beam shape; and

wherein said controller is operable to change at least one said beam illumination pattern in response to said second communication signal by adjusting at least one of said beam illumination parameters.

18. A method of operating a headlight system on a vehicle for adaptively illuminating a roadway to enhance visibility, said method comprising the steps of:

controlling said headlight system to selectively produce a beam illumination pattern that illuminates said roadway;

detecting at least one communication signal generated from at least one object that is external to said vehicle;

controlling said headlight system, in response to and in accordance with each said communication signal, to selectively produce an alternative beam illumination pattern that illuminates said roadway; and

controlling said headlight system, in response to and in accordance with each said communication signal, to selectively alter its beam illumination pattern by adjusting at least one beam illumination parameter selected from the group consisting of beam angle, beam focus, beam amplitude, beam position, and beam shape.