Method and system for measuring the dimensions of a three-dimensional object

• US 5,528,517 A
• Filed: 01/05/1994
• Issued: 06/18/1996
• Est. Priority Date: 07/12/1991
• Status: Expired due to Term

• Current Assignee: Cargoscan A/S
• Original Assignee: Cargoscan A/S
• Inventors: Loken, Morten
• Primary Examiner(s): Trammell, James P.
• Application Number:
  US08/175,347
• Time in Patent Office: 895 Days
• Field of Search: 364/560-564, 177/25, 177/14, 33/1 V, 33/706-708, 235/462
• US Class Current: 702/156
• CPC Class Codes: G01B 11/00 Measuring arrangements characterised by the use of optical techniques
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for

Abstract

A method and device for measuring the dimensions of a three-dimensional object (8) wherein the object is placed in a measuring corner which defines an x, y, z three-dimensional coordinate system, and wherein in connection with each coordinate at least one graded scale means (9) is provided. Optically machine-legible codes are provided along the respective graded scale means or a combined code for two axes together is provided in at least one of the coordinate planes. The projection of the objects on each coordinate (x,y,z) is registered by means of an opto/electrical reader ( 1,2) and the signals from the reader are fed into a computer (4) which, on the basis of the received signals for each coordinate, calculates and prints out, or displays, the characteristic data of the object. It can be used, for example, for freight charge calculations relating an object.

Claims

1. A method for measuring the dimensions of a three-dimensional object, wherein the object is placed in a measuring corner which defines an x, y, z three-dimensional coordinate system, and wherein in connection with each coordinate at least one graded scale means is provided, characterized in that at the graded markings of the respective scale means there is provided an optically machine-readable code which represents a respective distance from the origin of the coordinate system, that the code for each coordinate is read by an optical/electrical reader by moving towards or causing the reader to detect a coded marking lying freely closest to the object at the respective coordinate, said marking containing both information regarding metric dimension and also respective coordinate axis, that the code is registered by the reader, that the code registered by the reader is converted to an electrical signal which is signal-processed on the basis of the signal received for each coordinate, and to calculate and provide a print-out or display of characteristic data of the object or to transmit said data in electronic form to a signal processor for further processing.

2. The method as claimed in claim 1, wherein a combined optically machine-legible code for the respective measuring points is arranged in at least one of the planes xy, xz or yz of the coordinate system.

3. The method as claimed in claim 2, wherein the computer calculates a freight charge for the object, on the basis of said calculated characteristic data.

4. The method as claimed in claim 3, wherein said characteristic data includes a weight of the object.

5. The method as claimed in claim 1, wherein the computer calculates a freight charge for the object, on the basis of said calculated characteristic data.

6. The method as claimed in claim 1, wherein said optically machine-readable code is a bar code.

7. The method as claimed in claim 1, wherein said characteristic data include measured x coordinates, measured y coordinates, measured z coordinates, length, width, height, a calculated cubical volume of the object, a greatest length and circumference.

8. The method as claimed in claim 1, wherein said characteristic data include a freight charge.

9. The method as claimed in claim 5, wherein said characteristic data includes a weight of the object.

10. A system for measuring the dimensions of a three-dimensional object, wherein the object is placed in a measuring corner which defines a three-dimensional coordinate system, and wherein in connection with each coordinate at least one graded scale means is provided, and wherein the corner is formed by two vertical walls, possibly a vertical wall and a graded scale means having a mutual angle of 90°

, and a horizontal base on which the object is placed when being measured, characterized in that the graded scale means has, at its respective graded markings, an optically machine-legible code, for example, a bar code, that an opto/electrically functioning code-reader device is provided, for reading the code which lies close to the respective coordinate, wherein said marking code contains both information regarding metric dimension and respective coordinate axis, and that the code reader device is connected to a signal processor for calculating and displaying, via an optical display or printer characteristic data of the object, or for data transmission via a signal cable to another signal processor in electronic form for further processing.

11. The system as claimed in claim 10, wherein said graded scale means is associated with a weighing scale on which the object is placed whilst its dimensions are measured, and that a means is provided for transferring weight data of the object to said computer or said another computer.

12. The system as claimed in claim 10, wherein said code reader device is a manually operated bar code reader.

13. The system as claimed in claim 10, wherein said characteristic data include measured x coordinates, measured y coordinates, measured z coordinates, length, width, height, a calculated cubical volume of the object, a greatest length and circumference.

14. The system as claimed in claim 10, wherein said characteristic data include a freight charge.

15. The system as claimed in claim 10, wherein said further processing includes automatic invoicing.