Method and control unit for distance-dependent adjustment of the illumination range of a lighting system for a vehicle

• US 9,340,148 B2
• Filed: 03/22/2012
• Issued: 05/17/2016
• Est. Priority Date: 03/31/2011
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Ehlgen, Tobias, Fischer, Michael
• Primary Examiner(s): KIM, JUNG H
• Application Number:
  US14/008,738
• Publication Number:
  US 20140091710A1
• Time in Patent Office: 1,517 Days
• US Class Current: 1/1
• 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 1/143 combined with another condition, e.g. using vehicle recognition from camera images or activation of wipers
• CPC Class Codes: B60Q 2300/052 Switching delay, i.e. the beam is not switched or changed instantaneously upon occurrence of a condition change
• 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

Abstract

A method for increasing the illumination range of a vehicle, having a step of receiving high beam activation information via an interface, the high beam activation information indicating an option for the glare-free operation of the high beam. The method also includes a step of ascertaining a distance covered by the vehicle in response to receiving the high beam activation information, and a step of providing range-increasing information for increasing the illumination range when the covered distance after receiving the high beam activation information is greater than a predetermined minimum distance, and/or a step of providing at least one value of the increase in the illumination range (illumination range-increasing value) as a function of the distance covered.

Claims

1. A method for adjusting the illumination range of a lighting system for a vehicle, the method comprising:

receiving high beam activation information via an interface, the high beam activation information indicating that present surroundings of the vehicle permit the illumination range to be increased towards a value associated with high beam activation without blinding other road users;

ascertaining a distance covered by the vehicle in response to receiving the high beam activation information; and

providing at least one of;

(i) range-increasing information when the covered distance after receiving the high beam activation information is greater than a predetermined minimum distance, wherein the range-increasing information increases the illumination range and is not provided when the covered distance is less than the predetermined minimum distance, and (ii) at least one value of the increase in the illumination range (illumination range-increasing value) as a function of the distance covered.

2. The method of claim 1, wherein the illumination range-increasing information is provided when the high beam activation information has remained constant while traveling over the predetermined minimum distance after receiving the high beam activation information.

3. The method of claim 1, wherein multiple values of the increase in the illumination range form an illumination range-increasing pattern for different covered distances in each case.

4. The method of claim 1, wherein at least one of (i) the predetermined minimum distance and range-increasing value(s) is determined in the providing, taking into account a roadway class on which the vehicle is present, and (ii) a type of roadway in an area in which the vehicle is present.

5. The method of claim 1, wherein at least one of the predetermined minimum distance and range-increasing value(s) is determined in the providing, also taking into account an instantaneous driving state of the vehicle.

6. The method of claim 1, wherein at least one of the predetermined minimum distance and range-increasing value(s) is determined in the providing, also taking into account information concerning an instantaneous traffic situation.

7. The method of claim 1, further comprising:

determining an expected illumination range-reducing point in time for reducing the illumination range, and the range-increasing information being provided such that the illumination range is increased when a predetermined minimum switch-on time for the high beam is between a point in time of providing the range-increasing information and the expected illumination range-reducing point in time.

8. The method of claim 1, wherein at least one of the predetermined minimum distance and range-increasing value(s) is adapted such that the providing takes into account at least one stored characteristic curve, the characteristic curve representing a relationship between the minimum distance and an instantaneously ascertained parameter.

9. The method of claim 1, wherein at least one of the predetermined minimum distance and range-increasing value(s) is determined in the providing, using an empirical illumination range-increasing model having at least two input variables.

10. A control unit for adjusting the illumination range of a lighting system for a vehicle, comprising:

a computer processor configured to;

receive high beam activation information via an interface, the high beam activation information indicating that present surroundings of the vehicle permit the illumination range to be increased towards a value associated with high beam activation without blinding other road users;

ascertain a covered distance of the vehicle, in response to the receiving device receiving the high beam activation information; and

perform at least one of;

(i) providing range-increasing information when the covered distance after receiving the high beam activation information is greater than a predetermined minimum distance, wherein the range-increasing information increases the illumination range and is not provided when the covered distance is less than the predetermined minimum distance, and (ii) providing at least one value of the increase in the illumination range (illumination range-increasing value) as a function of the distance covered.

11. A non-transitory computer readable medium having a computer program, which is executable by a processor in an information system, comprising:

a program code arrangement having program code for adjusting the illumination range of a lighting system for a vehicle, wherein executing the program code causes the processor to perform the following;

receiving high beam activation information via an interface, the high beam activation information indicating that present surroundings of the vehicle permit the illumination range to be increased towards a value associated with high beam activation without blinding other road users;

ascertaining a distance covered by the vehicle in response to receiving the high beam activation information; and

providing at least one of;

(i) range-increasing information when the covered distance after receiving the high beam activation information is greater than a predetermined minimum distance, wherein the range-increasing information increases the illumination range and is not provided when the covered distance is less than the predetermined minimum distance, and (ii) at least one value of the increase in the illumination range (illumination range-increasing value) as a function of the distance covered.