Electronic road system generation method for an automatic guided vehicle

• US 4,935,871 A
• Filed: 02/23/1989
• Issued: 06/19/1990
• Est. Priority Date: 02/23/1989
• Status: Expired due to Term

• Current Assignee: John Bean Technologies Corporation
• Original Assignee: Caterpillar Incorporated
• Inventors: Grohsmeyer, Paul D.
• Primary Examiner(s): Chin, Gary
• Application Number:
  US07/314,511
• Time in Patent Office: 481 Days
• Field of Search: 364/424.01, 364/424.02, 364/449, 180/167, 180/168, 180/169, 340/988, 340/989
• US Class Current: 701/24
• CPC Class Codes: G05D 1/0291 Fleet control monitoring fleets in traffic control systems for road vehicles G08G1/127, G08G1/127

Abstract

Automatic guided vehicle (AGV) road system generation and modification are fully integrated and incorporated as part of facility planning. The plant facility planning computer system and the AGV computer system mutually share navigation and plant layout information, as well as AGV road system and floor layout modifications. The facility planning computer is also capable of receiving AGV position information and displaying the vehicles graphically superimposed over the plant layout display, with near real time accuracy.

Claims

1. A method for planning a path for an automatic guided vehicle (AGV) in a facility, said AGV operates in designated areas within said facility, operation of said AGV being controlled by a first computer according to a road system, said method comprising the steps of:

surveying the facility layout;

entering said facility layout into said first computer dedicated to AGV operations;

transferring electronically said facility layout to a second computer dedicated to manufacturing process planning;

entering said AGV path graphically into said second computer based on said facility layout; and

transferring said AGV path to said first computer.

2. A method for planning a road system in a facility for an automatic guided vehicle (AGV), said AGV operates in a contained area within said facility having a plurality of unique targets, said road system being within said contained area and being defined by designated areas, said AGV navigates by sighting said plurality of unique targets and a first computer is dedicated to controllably operate said AGV in said designated areas, said method comprising:

surveying the locations of said plurality of unique targets in said contained area;

entering said surveyed locations into said first computer;

transferring said surveyed locations to a second computer, said second computer being dedicated to manufacturing process control;

entering said road system graphically into said second computer based on said surveyed locations; and

transferring electronically said road system to said first computer.

3. A method, as set forth in claim 2, wherein said AGV designated areas include first, second, and third areas wherein said first area is defined as an area where only one vehicle is allowed to operate, said second area is an area having directional and width designations, and said third area is designated for parking, material pick up and deposit.

4. A method, as set forth in claim 2, further comprising said operating AGV detecting actual contained area dimensions and the position of said operating AGV, relaying back said actual contained area dimensions and position to said first computer, and transferring said actual contained area dimensions and said position to said second computer for update.

5. A method, as set forth in claim 4, wherein said second computer includes a graphics monitor, said graphics monitor displaying said AGV position superimposed on facility layout, and updating said monitor periodically.

6. A method, as set forth in claim 2, including the steps of:

entering modifications to the contained area and to the target locations on said second computer, and transferring said modifications to said first computer for update.

7. A method, as set forth in claim 2, including the steps of:

entering modifications to the contained area and to the target locations on said first computer, and transferring said modifications to said second computer for update.

8. A method, as set forth in claim 2, wherein said transferring steps include translating said target locations and said designated areas into the data representations used by the respective first and second computers.