Container chassis positioning system

• US 5,142,658 A
• Filed: 10/18/1991
• Issued: 08/25/1992
• Est. Priority Date: 10/18/1991
• Status: Expired due to Term

• Current Assignee: Daniel H. Wagner Associates, Inc.
• Original Assignee: Daniel H. Wagner Associates, Inc.
• Inventors: McMorran, Peter D., Samms, Richard W.
• Primary Examiner(s): Couso, Jose L.
• Application Number:
  US07/779,517
• Time in Patent Office: 312 Days
• Field of Search: 358/8793, 358/103, 358/107, 358/108, 340/686, 340/687, 414/401, 414/396, 414/584, 364/424.01424.02, 180/167, 180/168, 180/169, 382/1, 382/48
• US Class Current: 382/104
• CPC Class Codes: B65G 63/004 for containers
• CPC Class Codes: B66C 13/46 Position indicators for suspended loads or for crane elements

Abstract

A computer controlled signalling system to assist a driver in accurately positioning a truck chassis at a preprogrammed specific stop point in a loading/unloading lane adjacent to a dockside container crane to facilitate loading/unloading of containerized cargo by the crane and employing a light signal panel visible to the truck driver and having a series of vertically disposed lights thereon sequentially actuated by a computer. The vertical lights indicate to the driver the exact distance he is from, and when he reaches, the desired stop point. The computer is responsive to a video image received from a video camera disposed over the traffic lane and matches the image(s) received with a programmed image for locating, identifying and signalling the position of the truck.

Claims

1. An automatic, computer controlled signalling system to assist a driver in accurately positioning a truck chassis at a preprogrammed specific stop point in a loading/unloading lane adjacent to a dock side container crane to facilitate loading/unloading of containerized cargo comprising, in combination:

a dock side crane for loading/unloading containerized cargo between a ship and container transport trucks;

at least one loading/unloading lane extending beneath at least portions of said crane for passage of container transport truck vehicles thereon;

signal means adjacent to and visible to a driver of a truck moving along said at least one loading/unloading lane;

means for capturing an image of specific parts of a truck moving along said at least one loading/unloading lane;

computer vision means for receiving and comparing the captured image to a series of sample images to identify and match the captured image with one of said series of sample images;

said signal means being in connection with and being responsive to said means for receiving and comparing the captured image, whereby

when said means for capturing an image of a specific part of a moving truck matches the captured image with one of said series of sample images, said signal means will visually indicate to the driver of the truck that he is approaching the desired loading/unloading stop point and indicate the relative distance his vehicle is from the desired loading/unloading stop point, and when his vehicle reaches the desired loading/unloading stop point the signal means will indicate that he is to stop his truck for the loading/unloading thereof by said crane.

2. The computer controlled signalling system of claim 1 wherein said signal means includes a light signal panel;

said light signal panel having a column of spaced vertical lights thereon;

said column of spaced vertical lights being responsive to said computer vision means and including a first series of vertically disposed white lights, a center amber light, and a second series of vertically disposed white lights;

said first series of vertically disposed white lights being sequentially illuminated by said computer vision means when a container transport truck enters within a predetermined distance from the desired loading/unloading stop point;

said center amber light being programmed to flash while a container transport truck approaches and exits from the stop point and to continuously burn while a container transport truck is stopped at the loading/unloading stop point; and

said second series of vertically disposed white lights being sequentially illuminated by said computer vision means as a container truck is exiting from the loading/unloading stop point.

3. The computer controlled signalling system of claim 1 wherein said signal means includes a light signal panel;

said light signal panel having a column of spaced vertical lights thereon;

said column of spaced vertical lights consisting of two columns of five white lights divided by a center amber light;

each column of five white lights adapted to be sequentially illuminated to give visual indication to the truck driver of the relative distance his vehicle is from the desired loading/unloading stop point.

4. The computer controlled signalling system of claim 3 wherein the sequential illumination of said column of spaced vertical lights is programmed to indicate, on a nonlinear scale, the distance the truck driver is from the loading/unloading stop point;

said nonlinear scale being 1, 4.5, 10, 22 and 48 inches.

5. The computer controlled signalling system of claim 4 wherein each light in each column of white lights is programmed to be extinguished as the next light in the column is illuminated to ensure that only one white light in the column is illuminated at any given time.

6. The computer controlled signalling system of claim 1 wherein said computer vision means includes a video camera attached to a portion of the dock side container crane and angularly directed to view traffic moving along a loading/unloading lane under the crane.

7. The computer controlled signalling system of claim 6 including a computer having a memory capability and serving to receive pictorial images from said video camera and convert the pictorial images received to digital images;

and means for identifying, comparing and matching the digital images to one of a series of known images stored in the memory of said computer.

8. A method of assisting a driver in accurately positioning a container transport vehicle at a preprogrammed specific stop point in a loading/unloading lane adjacent to a dock side container crane to facilitate loading/unloading of containerized cargo, comprising the steps of:

providing a dock side crane for loading/unloading containerized cargo between a ship and a container transport vehicle;

providing a loading/unloading traffic lane extending beneath at least portions of the crane for passage of container transport vehicles thereon;

providing signal means adjacent to and visible to a driver of a container transport vehicle moving along the loading/unloading lane;

providing a video camera directed toward the loading/unloading traffic lane to capture an image of any vehicle within the camera range moving along the traffic lane;

providing computer vision means for receiving and comparing the captured image to a series of sample images to identify and match the captured image with one of the series of sample images; and

,

when a match image is received, converting this information to a digital signal and transferring this information to the signal means to illuminate a light thereon that indicates to the driver of the container transport vehicle the relative position he is from the desired loading/unloading stop point.