Obstacle detection and alerting system

• US 20040217851A1
• Filed: 04/29/2003
• Published: 11/04/2004
• Est. Priority Date: 04/29/2003
• Status: Abandoned Application

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Reinhart, James W.
• Application Number:
  US10/425,581
• Publication Number:
  US 20040217851A1
• Time in Patent Office: Days
• US Class Current: 340/435
• CPC Class Codes: B60Q 9/008 for anti-collision purposes
• CPC Class Codes: G01S 13/87 Combinations of radar systems, e.g. primary radar and secondary radar
• CPC Class Codes: G01S 13/931 of land vehicles
• CPC Class Codes: G01S 2013/9315 Monitoring blind spots
• CPC Class Codes: G01S 2013/93271 in the front of the vehicles
• CPC Class Codes: G01S 2013/93272 in the back of the vehicles
• CPC Class Codes: G01S 2013/93274 on the side of the vehicles
• CPC Class Codes: G01S 3/30 derived directly from separate directional systems
• CPC Class Codes: G08G 1/163 involving continuous checking

Abstract

The present invention provides an obstacle detection system for a work machine. The obstacle detection system includes at least one sensing device and an interface device. The sensing device is configured to identify the presence of an obstacle in an area around the machine and the interface device is configured to alert an operator to the presence and position of the obstacle with respect to the machine.

Claims

1. A detection system configured to detect obstacles based on proximity of the obstacle to a machine, said detection system comprising:

a plurality of sensing devices configured to detect the presence of at least one obstacle; and

an interface device configured to determine the position of said at least one obstacle relative to said machine, and alert an operator of said machine of said position of said obstacle relative to a portion of said machine.

2. The detection system of claim 1 wherein said sensing device is configured to identify the presence of two or more obstacles simultaneously.

3. The detection system of claim 2, wherein said interface device is configured to alert said operator of said machine which one of two or more obstacles is closest to said machine.

4. The detection system of claim 2, wherein said interface device is configured to alert said operator of said machine which one of said two or more obstacles is farthest from said machine.

5. The detection system of claim 1, wherein said interface device is a video monitor.

6. The detection system of claim 1, including a plurality of cameras, one of said cameras adapted to monitor a portion of said area adjacent to said machine.

7. The detection system of claim 6, including a switching apparatus configured to connect one of at least one of said plurality of cameras to said video camera based on the proximity of said at least one obstacle to said machine.

8. The detection system of claim 1, wherein said sensing device includes a radio system adapted to detect the proximity of said obstacle to said machine.

9. The detection system of claim 8, wherein said radio system includes at least one radio receiver and one radio transmitter, said radio receiver being adapted to receive a signal from said radio transmitter and said transmitter being positioned on at least one of said obstacles.

10. The detection system of claim 1, including a radar system adapted to determine the proximity of said obstacle to said machine.

11. The detection system of claim 1, including at least one proximity sensor configured to determine the proximity of said obstacle to said machine.

12. A method of alerting the operator of a machine of the presence of an obstacle being within a proximity of said machine, said machine having a plurality of sensing devices, said sensing devices generating a respective signal, said method comprising the steps of:

determining the presence of a first of at least one obstacle;

establishing a position of said obstacle relative to said machine in response to said signal;

alerting the operator of the position of said obstacle relative to a portion of said machine.

13. The method of claim 12, including a step of providing a plurality of cameras, each of said plurality of cameras providing a an image of a portion of an area surrounding said machine.

14. The method of claim 12, including a step of using an image recognition system to determine said presence of said obstacle.

15. A method of alerting the operator of a machine of the presence of an obstacle being within a proximity of said machine, said machine including a plurality of imaging devices, said method comprising the steps of:

detecting the presence of an obstacle; and

selecting an imaging device to provide an image of said obstacle.

16. A method as set forth in claim 15, including the step of determining the position of said obstacle relative to said machine.

17. A method as set forth in claim 15, further comprising the step of comparing said obstacle position with a viewing characteristic of said imaging device.

18. A method as set forth in claim 17, wherein the step of selecting said imaging device further includes the step of selecting said imaging device in response to said comparison.

19. A method as set forth in claim 17, wherein said viewing characteristic is a field of view.

20. A method as set forth in claim 17, wherein said viewing characteristic is a predefined viewing region relative to the machine.

21. A method as set forth in claim 15, wherein the step of detecting an obstacle further comprises the steps of receiving image data from said imaging device, analyzing said image data and detecting said obstacle in response to said analysis.

22. A method as set forth in claim 21, wherein said analysis further comprises the step of performing image recognition on said image data.

23. A method as set forth in claim 21, wherein the step of detecting the obstacle, further comprises the steps of detecting the presence of the obstacle using a radar device.

24. A method as set forth in claim 23, wherein the step of detecting further comprises the step of, detecting a motion of said obstacle.

25. A method as set forth in claim 23, wherein said step of detecting said motion of said obstacle includes a step of canceling said motion of said machine from said object.

26. A method as set forth in claim 23, further including a step of establishing a distance of said obstacle relative to said machine.

27. A method as set forth in claim 26, further including the step of selecting a camera in response to said distance being less than a predefined threshold.