Vehicular Anticipatory Sensor System

• US 20080147253A1
• Filed: 02/18/2008
• Published: 06/19/2008
• Est. Priority Date: 10/22/1997
• Status: Abandoned Application

• Current Assignee: American Vehicular Sciences LLC (Acacia Research Corporation)
• Original Assignee: Intelligent Technologies International, Inc.
• Inventors: Breed, David S.
• Application Number:
  US12/032,946
• Publication Number:
  US 20080147253A1
• Time in Patent Office: Days
• US Class Current: 701/3
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: G01C 21/34 Route searching; Route guidance
• CPC Class Codes: G01C 21/3691 Retrieval, searching and output of information related to real-time traffic, weather, or environmental conditions arrangements for giving variable traffic instructions G08G1/09
• CPC Class Codes: G01C 21/3697 Output of additional, non-guidance related information, e.g. low fuel level G01C21/3679 takes precedence
• CPC Class Codes: G01S 17/93 for anti-collision purposes
• CPC Class Codes: G01S 2007/4975 of sensor obstruction by, e.g. dirt- or ice-coating, e.g. by reflection measurement on front-screen
• CPC Class Codes: G08G 1/165 for passive traffic, e.g. including static obstacles, trees
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes
• CPC Class Codes: G08G 1/167 Driving aids for lane monitoring, lane changing, e.g. blind spot detection

Abstract

System and method for preventing collisions between a vehicle and objects in a path of the vehicle includes a laser system arranged to direct at least one laser beam outward therefrom and which is in an eye-safe portion of the electromagnetic spectrum, an imaging receiver for receiving at least one laser beam reflected from objects in the path of the laser beam, a processor coupled to the receiver and arranged to receive signals derived from the received laser beam and process the signals to determine a distance between the laser system and the objects from which the laser beam has been reflected, and one or more reactive systems coupled to the processor. The processor controls the reactive system to indicate the presence of objects at specific distances from the vehicle. This indication may be used to take preventive action to avoid the collision, either manually or automatically.

Claims

1. A vehicle including a system to prevent collisions between the vehicle and objects in a path of the vehicle, comprising:

a laser system arranged to direct at least one laser beam outward from said laser system, said laser system being arranged to generate at least one laser beam in an eye-safe portion of the electromagnetic spectrum;

an imaging receiver for receiving at least one laser beam reflected from objects in the path of the at least one laser beam;

a processor coupled to said receiver and arranged to receive signals derived from the received at least one laser beam and process the signals to determine a distance between said laser system and the objects from which the at least one laser beam has been reflected; and

a reactive system coupled to said processor, said processor being arranged to control said reactive system to indicate the presence of objects at specific distances from the vehicle.

2. The vehicle of claim 1, wherein the vehicle is an airplane.

3. The vehicle of claim 1, wherein said laser system is arranged to project a bright spotlight in the eye-safe portion of the electromagnetic spectrum in a direction in which the vehicle is heading or in a direction forward of a front of the vehicle.

4. The vehicle of claim 1, wherein said processor comprises a pattern recognition algorithm arranged to process the signals to determine whether any objects are in the vehicle'"'"'s path and optionally an identification of the objects determined to be in the vehicle'"'"'s path.

5. The vehicle of claim 4, wherein said pattern recognition algorithm comprises a trained neural network, a combination neural network, an optical correlation system or a sensor fusion algorithm.

6. The vehicle of claim 1, wherein said reactive system is a heads-up display which is controlled by said processor to project an image into a field of view of an occupant of the vehicle, the image being derived from the object.

7. The vehicle of claim 6, wherein said processor is arranged to select a form of the image to project into the field of the view of the occupant based on the received signals.

8. The vehicle of claim 6, further comprising a system for determining a location of the occupant'"'"'s head or eyes, said heads-up display being controlled by said processor to project the image into the field of view of the occupant based on the determined location of his or her head or eyes.

9. The vehicle of claim 1, wherein said reactive system is an alarm system which provides a visual and/or audible warning to an occupant of the vehicle when an object is determined to be within a threshold distance from the vehicle.

10. The vehicle of claim 1, wherein said receiver is arranged to apply range gating to obtain reflections from objects within a predetermined range from the vehicle.

11. A method for preventing collisions between a vehicle and objects in a path of the vehicle, comprising:

directing at least one laser beam outward from the vehicle, the at least one laser beam being in an eye-safe portion of the electromagnetic spectrum;

receiving at least one laser beam reflected from objects in the path of the at least one laser beam;

processing the received at least one laser beam on the vehicle to determine a distance between the vehicle and objects from which the at least one laser beam has been reflected; and

controlling a reactive system on the vehicle to indicate the presence of objects at specific distances from the vehicle.

12. The method of claim 11, wherein the vehicle is an airplane.

13. The method of claim 11, wherein the step of directing at least one laser beam outward from the vehicle comprises projecting a bright spotlight in the eye-safe portion of the electromagnetic spectrum in a direction in which the vehicle is heading or in a direction forward of a front of the vehicle.

14. The method of claim 11, wherein the step of processing the received at least one laser beam comprises deriving signals from the received at least one laser beam and processing the signals in a pattern recognition algorithm which is programmed to determine whether any objects are in the vehicle'"'"'s path and optionally an identification of the objects.

15. The method of claim 14, wherein the pattern recognition algorithm comprises a trained neural network, a combination neural network, an optical correlation system or a sensor fusion algorithm.

16. The method of claim 11, wherein the reactive system is a heads-up display, the step of controlling the heads-up display comprising projecting an image into a field of view of an occupant of the vehicle derived from the object.

17. The method of claim 16, further comprising:

identifying the object; and

selecting a form of the image to project into the field of the view of the occupant based on an identification of the object.

18. The method of claim 16, further comprising determining a location of the occupant'"'"'s head or eyes, the heads-up display being controlled to project the image into the field of view of the occupant based on the determined location of his or her head or eyes.

19. The method of claim 11, wherein the reactive system is an alarm system which provides a visual and/or audible warning to an occupant of the vehicle when an object is determined to be within a threshold distance from the vehicle.

20. The method of claim 11, further comprising applying range gating to obtain reflections from objects within a predetermined range from the vehicle.