Method and apparatus for managing simultaneous access to a resource by a fleet of mobile machines

• US 5,913,914 A
• Filed: 12/18/1996
• Issued: 06/22/1999
• Est. Priority Date: 12/18/1996
• Status: Expired due to Term

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Koehrsen, Craig L., Kemner, Carl A.
• Primary Examiner(s): ZANELLI, MICHAEL J
• Application Number:
  US08/769,295
• Time in Patent Office: 916 Days
• Field of Search: 701/50, 701/117, 701/24, 340/990, 340/991, 340/992
• US Class Current: 701/50
• CPC Class Codes: G05D 1/0236 in combination with a laser lasers per se H01S
• CPC Class Codes: G05D 1/027 comprising intertial navigation means, e.g. azimuth detector inertial navigation G01C21/16; inertial navigation combined with non-inertial navigation instruments G01C21/165
• CPC Class Codes: G05D 1/0278 using satellite positioning signals, e.g. GPS
• CPC Class Codes: G05D 1/0297 by controlling means in a control room
• CPC Class Codes: G06Q 10/047 Optimisation of routes or paths, e.g. travelling salesman problem
• CPC Class Codes: G08G 1/202 Dispatching vehicles on the basis of a location, e.g. taxi dispatching

Abstract

The invention is a system and method for managing a resource having a dump location. A plurality of stop points are located adjacent to the dump location. Each of a plurality of mobile machines includes a queue manager adapted to generate a queue position request signal as each mobile machine approaches the resource. A resource manager is adapted to establish and control a queue to control access to the resource in response to receiving a queue position request signal. The resource manager is also adapted to enable simultaneous access of the dump location by the mobile machines.

Claims

1. A system for managing a resource shared by a plurality of mobile machines, comprising:

at least one dump location located within said resource;

a plurality of stop points located adjacent said at least one dump location;

a queue manager located on each mobile machine of said plurality of mobile machines, said queue manager being adapted to generate a queue position request signal in response to said mobile machine approaching said resource; and

a resource manager adapted to establish a queue to control access to said resource, and adapted to receive said queue position request signal and responsively determine a queue position in said queue, and enable simultaneous access of said dump location by said plurality of mobile machines, each mobile machine of said plurality of mobile machines accessing a respective one of said plurality of stop points.

2. A system, as set forth in claim 1, wherein said resource manager is adapted to determine a configuration of said resource.

3. A system, as set forth in claim 1, wherein said resource includes at least one entry point, and at least one exit point.

4. A system, as set forth in claim 3, wherein said resource manager is adapted to deliver a queue position signal to said mobile machine approaching said resource, wherein said queue position signal includes data disclosing a position of said entry point and a number of mobile machines in said queue.

5. A system, as set forth in claim 4, wherein said queue manager is adapted to determine said queue position from said position of said entry point and said number of mobile machines in said queue.

6. A system, as set forth in claim 1, wherein said queue manager is adapted to generate a stop point ready signal, and communicate said stop point ready signal to said resource manager.

7. A system, as set forth in claim 1, wherein said dump location is adapted to generate a stop point ready signal, and communicate said stop point ready signal to said resource manager.

8. A system, as set forth in claim 1, wherein said resource manager is adapted to receive a stop point ready signal, said stop point ready signal including data disclosing a position of said stop point.

9. A system, as set forth in claim 1, wherein said queue manager is adapted to generate a dump complete signal and communicate said dump complete signal to said resource manager.

10. A system, as set forth in claim 1, wherein said resource manager is adapted to allow said mobile machine in said first position of said queue to access one of said plurality of stop points in response to a condition of said resource.

11. A system, as set forth in claim 1, wherein said dump location is a crusher.

12. A system, as set forth in claim 1, wherein said resource manager is adapted to selectively deliver a blocking signal to prevent mobile machines in said queue from accessing said resource.

13. A method for managing a resource shared by a plurality of mobile machines, said resource having a dump location located within said resource, said resource having a plurality of stop points located adjacent said dump location, the method including the steps of:

establishing and controlling a queue to control access to said resource; and

enabling simultaneous access of said dump location by said plurality of mobile machines, each mobile machine of said plurality of mobile machines accessing a respective one of said plurality of stop points.

14. A method, as set forth in claim 13, including the step of determining a configuration of said resource.

15. A method, as set forth in claim 14, wherein the configuration of said resource includes at least one entry point and at least one exit point.

16. A method, as set forth in claim 13, wherein establishing and controlling said queue includes the step of controlling the placement of said mobile machine in said queue as said mobile machine approaches said queue.

17. A method, as set forth in claim 16, wherein controlling the placement of said mobile machine includes the steps of:

receiving a queue position request signal from said mobile machine;

responsively determining a queue position in said queue; and

communicating said queue position to said mobile machine.

18. A method, as set forth in claim 17, wherein communicating said queue position includes the steps of:

communicating data disclosing a position of one of said at least one entry point to said mobile machine as a function of said queue and a determination of the number of mobile machines in said queue; and

responsively determining said queue position.

19. A method, as set forth in claim 13, including the step of determining one of said plurality of stop points to access, and responsively communicating said stop point determination to a mobile machine in a first position of said queue.

20. A method, as set forth in claim 19, including the steps of:

determining a route from said queue to said one of said stop points; and

communicating said route to said mobile machine in said first position of said queue.

21. A method, as set forth in claim 13, including the step of allowing said mobile machine in said first position of said queue to access one of said stop points in response to a condition of said resource.

22. A method, as set forth in claim 21, including the steps of:

communicating a depart position signal to said mobile machine in said first position of said queue in response to determining to allow said mobile machine to access one of said stop points;

receiving a leave position signal from said mobile machine upon departure of said mobile machine from said first position of said queue; and

updating positions of any mobile machines remaining in said queue in response to receiving said leave position signal.

23. A method, as set forth in claim 22, wherein updating positions includes the step of moving a mobile machine in an nth position of said queue to an nth-1 position of said queue.

24. A method, as set forth in claim 22, including the step of receiving an arrive stop point signal from said mobile machine as said mobile machine arrives at said stop point.

25. A method, as set forth in claim 13, including the steps of:

receiving a dump complete signal from said mobile machine in response to completion of dumping;

responsively generating and communicating a depart stop point signal to said mobile machine;

receiving a leave stop point signal from said mobile machine in response to said mobile machine leaving said stop point; and

receiving a leave resource signal from said mobile machine in response to said mobile machine leaving said resource.

26. A method, as set forth in claim 25 wherein responsively generating and communicating a depart stop point signal includes the step of determining a route to an exit point.