Random inventory system

• US 4,796,209 A
• Filed: 06/26/1986
• Issued: 01/03/1989
• Est. Priority Date: 06/26/1986
• Status: Expired due to Fees

• Current Assignee: Pittsburgh National Bank (The PNC Financial Services Group, Inc.)
• Original Assignee: Allegheny Ludlum Corporation (Allegheny Technologies Incorporated)
• Inventors: Burk, David L.
• Primary Examiner(s): Lall, Parshotam S.
• Assistant Examiner(s): Goldman, David
• Application Number:
  US06/878,865
• Time in Patent Office: 922 Days
• Field of Search: 364/559, 364/478, 364/444, 364/403, 414/273, 414/277, 414/279, 235/385, 340/825.49, 340/685, 340/825.22, 209/608-610
• US Class Current: 700/302
• CPC Class Codes: B65G 1/1371 with data records
• CPC Class Codes: B66C 13/46 Position indicators for suspended loads or for crane elements
• CPC Class Codes: B66C 13/48 Automatic control of crane drives for producing a single or repeated working cycle; Programme control
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
• CPC Class Codes: G06Q 10/087 Inventory or stock management, e.g. order filling, procurement or balancing against orders

Abstract

A method for locating and retrieving a randomly placed object, such as a steel coil, in a warehouse, such as a crane bay of a steel mill storage warehouse. The method comprises the steps of attaching an indicia identification to the object, recording the indicia of identification, determining the coordinates of the object, indexing the indicia to the coordinates, and retrieving the object with a transporting means.

Claims

1. The method for identifying the location of a randomly placed object, said method including the steps of:

applying visual indicia of identification to the object which is to be randomly placed;

generating and recording electrical signals corresponding to X, Y and Z coordinates of a random storage location of the object by transport means for the object;

indexing the recorded electrical signals of the visual indicia with the electrical signals of the X, Y, and Z coordinates of the random storage location thereby creating an index; and

accessing said index to identify, locate and retrieve the object from the random storage location.

2. The method of claim 1 wherein the recording of said indicia of identification is by a camera.

3. The method of claim 2 wherein the camera includes a video camera.

4. The method of claim 2 wherein the recording of said indicia of identification by the camera is inputted to a computer data base.

5. The method of claim 1 wherein said transporting means includes an overhead crane, bridge trolley, and object fastener.

6. The method of claim 5 wherein said overhead crane allows transporting of the objects in the X direction.

7. The method of claim 5 wherein said bridge trolley allows transporting of the object for random placement in the Y direction.

8. The method of claim 5 wherein vertical translation of the object fasteners allows transporting of the object for random placement in the Z direction.

9. The method of claim 5 wherein said overhead crane allows transporting of the object for random placement in the X direction.

10. The method of claim 9 wherein said bridge trolley allows transporting of the object for random placement in the Y direction.

11. The method of claim 10 wherein vertical translation of said object fastener allows positioning of the object for random placement in the Z direction.

12. The method of claim 1 wherein said transporting means being movable to a position proximate to the position of the randomly placed object by reading the X, Y, and Z coordinates of the object from said index.

13. The method of claim 12 wherein the indicia of identification includes a visual indicia.

14. The method of claim 13 wherein the recording of said indicia of identification is by a camera.

15. The method of claim 14 wherein the camera is mounted on the transporting means.

16. The method of claim 12 including the further step of attaching a position-indicator to said transporting means.

17. The method of claim 16 wherein the coordinates of the randomly placed object are determined by recording the coordinates of the transporting means as determined by said position-indicator at the point in time that the transporting means places the object at a storage location therefore.

18. The method of claim 17 wherein the transporting means is moved to a position to allow moving of the object by determining the coordinates of the object from said index, and moving the transporting means to the coordinates of the object.

19. The method of claim 18 wherein the recording of said indicia of identification is by a camera.

20. The method of claim 19 wherein the recording of said indicia of identification by the camera is inputted to a computer data base.

21. The method of claim 19 wherein the camera is mounted on the transporting means.

22. A method of locating transporting means proximate to a randomly stored object to be moved by said transporting means said method comprising the steps of:

applying visual indicia of identification on the object;

recording electrical signals corresponding to said visual indicia of identification;

determining a coordinate in the x direction for a random storage location of the object by determining the coordinate in the x direction for the location of the transporting means;

determining a coordinate in the y direction for a random storage location of the object by determining the coordinate in the y direction for the location of the transporting means;

determining a coodinate in the z direction for a random storage location of the object by determining the coordinate in the z direction for the location of the transporting means;

indexing said coordinates in the x, y, and z directions, respectively, to the recorded electrical signals corresponding to visual indicia of identification, thereby creating an index; and

using the index to locate and retrieve the object from the randomly selected storage location.

23. The method of claim 22 wherein said transporting means includes an overhead crane, bridge trolley, and object fastener.

24. The method of claim 22 which includes the further step of attaching a position-indicator to said transporting means.

25. The method of claim 24 wherein said determining coordinates for a random storage location includes recording the coordinates of the transporting means at a point in time when the transporting means places the object at the random storage location.