Object dimensioning system and related methods

• US 8,928,896 B2
• Filed: 02/06/2012
• Issued: 01/06/2015
• Est. Priority Date: 02/08/2011
• Status: Active Grant

• Current Assignee: Quantronix Incorporated (Schneider Electric SE)
• Original Assignee: Quantronix Incorporated (Schneider Electric SE)
• Inventors: Kennington, Robert L., Carlsruh, Eve A., Bailey, Craig R., Midboe, Marie L., Taylor, Brandon M., Neilson, Randy Brown
• Primary Examiner(s): Ton, Tri T
• Assistant Examiner(s): MERRELL II, WILLIE C
• Application Number:
  US13/366,901
• Publication Number:
  US 20120200862A1
• Time in Patent Office: 1,065 Days
• Field of Search: 356614-616, 356622-623, 356/625, 356/627, 356628-630, 356/635, 250/559.4, 250/221, 250/214.R, 250/224, 250/359.1, 250/360.1, 702/159, 702/156, 702/155, 702/158, 702/166, 702/170, 702/172, 702/173, 702/175, 702/167
• US Class Current: 356/625
• CPC Class Codes: G01B 11/02 for measuring length, width or thickness G01B11/08 takes precedence
• CPC Class Codes: G01B 11/14 for measuring distance or clearance between spaced objects or spaced apertures G01B11/26 takes precedence; rangefinders G01C3/00
• CPC Class Codes: G01B 17/00 Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
• CPC Class Codes: G01G 19/002 for postal parcels and letters
• CPC Class Codes: G01G 19/005 with electric or electronic computing means

Abstract

A method and apparatus for dimensioning and, optionally, weighing an object. A platform with a surface is used for supporting an object. A user selects between two different dimensioning devices of the apparatus. The first device employs three distance sensors to determine a distance between each of the distance sensors and a side of an object. The second device includes a movable gate which is passed over and about an object or objects on the platform. Sensor arrays, such as paired, aligned light emitter and receiver arrays, are used in combination with a plurality of sensed gate positions to determine the dimensions of the objects(s) as the gate passes around the object(s) based on whether or not light from an emitter on one side of the gate reaches a light receiver on another, opposing side of the gate.

Claims

1. An apparatus for determining dimensions of an object, comprising:

a platform having a surface for supporting an object;

a first dimensioning device comprising first, second and third mutually orthogonal distance sensors, the first distance sensor oriented to sense distance in a first direction substantially orthogonal to the platform surface;

the second and third distance sensors oriented substantially parallel to the platform surface, each of the distance sensors aimed toward a common location; and

a second dimensioning device comprising a gate configured as a frame having an upper arm above the platform opposite a lower arm below the platform and having opposing side supports located between the upper arm and lower arm, wherein the gate is mounted for horizontal movement in an arc about the platform, and wherein the arms of the gate respectively carry a plurality of mutually aligned emitters and receivers and wherein the supports of the gate respectively carry a plurality of mutually aligned emitters and receivers.

2. The apparatus of claim 1, further comprising a vertically extending hinge device supporting the gate on the apparatus and enabling rotation of the gate in the arc of horizontal movement about the platform.

3. The apparatus of claim 1, wherein the platform is transparent, and the plurality of emitters comprises a plurality of light signal emitters on one of the upper arm and the lower arm and a plurality of light signal receivers on the other of the upper arm and the lower arm.

4. The apparatus of claim 3, wherein the plurality of emitters further comprises a plurality of light signal emitters on one of one side support and the opposing side support and comprises a plurality of light signal receivers on the other of the one side support and the opposing side support.

5. The apparatus of claim 1, wherein the plurality of emitters comprises a plurality of light signal emitters configured in one or more rows of equally spaced light emitters and wherein the plurality of light signal receivers is configured in one or more rows of equally spaced light receivers, an arrangement of the one or more rows of light signal receivers mirroring an arrangement of the one or more rows of light emitters.

6. The apparatus of claim 5, wherein the plurality of light signal emitters is configured in two or more rows, and wherein light signal emitters of each row of light signal emitters are longitudinally offset from light signal emitters of any adjacent row of light signal emitters.

7. The apparatus of claim 5, wherein each light signal emitter is individually operable independent from any other light signal emitter.

8. The apparatus of claim 5, wherein each light signal emitter in a common row is equally spaced at between about 3 mm and about 5 mm apart.

9. The apparatus of claim 5, wherein each row of light signal emitters is equally laterally spaced from any adjacent row of light signal emitters at between about 6 mm and about 8 mm apart.

10. The apparatus of claim 1, wherein the platform has a first straight edge and a second straight edge orthogonally adjoined with the first straight edge at a corner adjacent the common location and has a third arcuate edge opposite the corner such that the surface of the platform substantially forms a quarter circle.

11. The apparatus of claim 10, further comprising a corner stop that rises vertically from the corner of the platform, the corner stop having a first vertical surface and a second vertical surface wherein the first vertical surface is orthogonal to the second vertical surface and wherein the first vertical surface and second vertical surface are orthogonal to the surface of the platform.

12. The apparatus of claim 1, wherein the first, second, and third distance sensors comprise one or more of ultrasonic sensors and laser range finder sensors.

13. The apparatus of claim 1, wherein the plurality of emitters comprises light emitting diodes (“

LEDs”

).

14. The apparatus of claim 1, further comprising a weight measuring device located and configured to measure a weight of an object situated on the platform.

15. The apparatus of claim 14, wherein the weight measuring device supports the platform independent of the first and second dimensioning devices.

16. The apparatus of claim 15, wherein the weight measuring device comprises only three load cells supporting a scale frame carrying the platform.

17. The apparatus of claim 1, further including an electronic computing device for calculating one or more of a spatial volume and a dim-weight of an object based on dimensions determined by one or more of the first dimensioning device and the second dimensioning device.

18. A method for determining dimensions of one or more objects, comprising:

selecting one of a first dimensioning device and a second dimensioning device,

wherein the first dimensioning device comprises first, second and third mutually orthogonally oriented distance sensors aimed toward a common location over a surface of a substantially transparent platform;

wherein the second dimensioning device comprises structure bearing dimensioning sensors including horizontally and vertically mounted cooperative beam emitters and receivers and mounted for movement about the substantially transparent platform;

placing one or more objects on the surface of the substantially transparent platform; and

measuring dimensions of the one or more objects using the selected dimensioning device.

19. The method of claim 18, wherein measuring the dimensions of the one or more objects in response to selection of the first dimensioning device further comprises:

determining a height of an object proximate the common location by determining a first distance between the first distance sensor and the top of the object and subtracting the determined first distance from a known distance between the first distance sensor and the surface of the substantially transparent platform;

determining a width of the object by determining a second distance between the second distance sensor and a first side of the object and subtracting the determined second distance from a known distance between the second distance sensor and an alignment surface opposing the second distance sensor; and

determining a length of the object by determining a third distance between the third distance sensor and a second side of the object and subtracting the determined third distance from a known distance between the third distance sensor and an alignment surface opposing the third distance sensor.

20. The method of claim 18, wherein measuring the dimensions of the one or more objects in response to selection of the second dimensioning device further comprises:

moving the structure in a horizontal arc of movement about the surface of the substantially transparent platform such that the structure passes about the one or more objects, beams from the beam emitters being interrupted by the one or more objects and the interruptions detected by the cooperative receivers;

monitoring a plurality of positions of the structure during movement thereof;

retrieving data from the receivers of the plurality of dimensioning sensors associated with the plurality of positions; and

determining dimensions of the one or more objects based on a correlation between the plurality of positions of the structure and the associated data retrieved from the receivers of the plurality of dimensioning sensors.

21. The method of claim 20, wherein placing one or more objects on the surface of the substantially transparent platform comprises placing multiple disjoint objects on the surface and determining the dimensions of each of the multiple disjoint objects based on a correlation between the positions of the structure and the associated data retrieved from the receivers of the plurality of dimensioning sensors.

22. The method of claim 18, further comprising determining a weight of the one or more objects substantially concurrently with measuring the dimensions thereof.

23. The method of claim 18, further comprising calculating one or more of a spatial volume of the one or more objects from the measuring dimensions and calculating a dim-weight for the one or more objects.