ULTRASONIC DIMENSIONING SYSTEM AND METHOD

• US 20090306929A1
• Filed: 06/04/2008
• Published: 12/10/2009
• Est. Priority Date: 06/04/2008
• Status: Abandoned Application

• Current Assignee: Mettler-Toledo Incorporated (Mettler-Toledo International Inc.)
• Original Assignee: Mettler-Toledo Incorporated (Mettler-Toledo International Inc.)
• Inventors: Li, Wenquan, Winfrey, Helen, Hindmon, Hugh G., Metzler, Philip M., Churan, John Scott
• Application Number:
  US12/133,181
• Publication Number:
  US 20090306929A1
• Time in Patent Office: Days
• US Class Current: 702/155
• CPC Class Codes: G01B 15/00 Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons characterised by the use of optical techniques G01B9/00, G01B11/00

Abstract

An ultrasonic dimensioning system and method by which objects can be quickly and accurately measured (dimensioned). The system includes at least a stable object support surface, a number of ultrasonic receivers, and an ultrasonic transmitter. The ultrasonic transmitter is preferably part of a pointer device that is properly positioned relative to an object to be measured, the proper position(s) depending on the shape of the object. Subsequent transmission of ultrasonic pulses (waves) from the pointer device are received by the ultrasonic receivers. The time intervals between transmission and reception of the ultrasonic pulses (waves) are used to determine the distance of the pointer from the receivers, which distances are subsequently used to calculate the dimensions/volume of the object.

Claims

1. An ultrasonic system for dimensioning a cuboid object, comprising:

an object support surface;

at least three ultrasonic receivers positioned about said cuboid object when said cuboid object resides on said object support surface;

at least one moveable ultrasonic transmitter for transmitting ultrasonic pulses to said at least three ultrasonic receivers while touching said cuboid object; and

a microprocessor in communication with said at least three receivers and said at least one transmitter, said microprocessor programmed with at least one multilateration algorithm.

2. The system of claim 1, further comprising one or more locating elements associated with said object support surface, said one or more locating elements for locating at least one side of said cuboid object that is substantially perpendicular to said object support surface.

3. The system of claim 2, wherein said one or more locating elements are attached to said object support surface.

4. The system of claim 2, wherein said one or more locating elements are one or more markings on a visible face of said object support surface.

5. The system of claim 2, further comprising one or more sensors associated with said one or more locating elements, said sensors for automatically detecting the presence of said cuboid object.

6. The system of claim 1, wherein said object support surface is a weighing scale.

7. The system of claim 1, further comprising an ultrasonic pulse calibrator for providing measurements used to compensate said ultrasonic pulses emitted by said at least one ultrasonic transmitter for the effects of one or more atmospheric conditions on the speed of sound.

8. The system of claim 1, further comprising atmospheric sensors for providing measurements used to compensate said ultrasonic pulses emitted by said at least one ultrasonic transmitter for the effects of one or more atmospheric conditions on the speed of sound.

9. The system of claim 1, wherein said microprocessor is a microcontroller.

10. The system of claim 1, wherein said ultrasonic transmitter is adapted to transmit an ultrasonic pulse only when activated by a user.

11. The system of claim 1, wherein said ultrasonic transmitter is adapted to transmit an ultrasonic pulse automatically when touched to said cuboid object.

12. A one-touch ultrasonic method of dimensioning a cuboid object, comprising:

providing an ultrasonic dimensioning system, said system further comprising;

a substantially planar object support surface,

at least three ultrasonic receivers positioned to be above said cuboid object when said cuboid object resides on said object support surface,

at least one ultrasonic transmitter for transmitting ultrasonic pulses to said at least three ultrasonic receivers while touching said cuboid object,

at least two locating elements for locating at least two orthogonal sides of said cuboid object that extend substantially perpendicularly to said object support surface, and

a microprocessor in communication with said at least three receivers and said at least one transmitter, said microprocessor programmed with at least a one-touch multilateration algorithm,

placing said cuboid object on said object support surface such that said two orthogonal sides are located by said at least two locating elements;

touching said ultrasonic transmitter to the top corner of said cuboid object that is diagonally opposite said two orthogonal sides;

causing said ultrasonic transmitter to emit an ultrasonic pulse while touching said top corner;

receiving said ultrasonic pulse at said ultrasonic receivers; and

using said one-touch multilateration algorithm to calculate the dimensions of said cuboid object.

13. The method of claim 12, further comprising using an ultrasonic pulse calibrator to compensate for the effects of one or more atmospheric conditions on the speed of travel of said ultrasonic pulses emitted by said ultrasonic transmitter.

14. The method of claim 12, further comprising using readings from atmospheric sensors to compensate for the effects of one or more atmospheric conditions on the speed of travel of said ultrasonic pulses emitted by said ultrasonic transmitter.

15. The method of claim 12, further comprising providing sensors to automatically detect the presence of said cuboid object against said at least two locating elements and to automatically select said one-touch multilateration algorithm to calculate the dimensions of said cuboid object.

16. A two-touch ultrasonic method of dimensioning a cuboid object, comprising:

providing an ultrasonic dimensioning system, said system further comprising;

a substantially planar object support surface,

at least three ultrasonic receivers positioned to be above said cuboid object when said cuboid object resides on said object support surface,

at least one ultrasonic transmitter for transmitting ultrasonic pulses to said at least three ultrasonic receivers while touching said cuboid object,

at least one locating element for positioning at least one side of said cuboid object that extends substantially perpendicularly to said object support surface; and

a microprocessor in communication with said at least three receivers and programmed with at least a two-touch multilateration algorithm,

placing said cuboid object on said object support surface such that one side of said cuboid object is located against said at least one locating element;

separately touching said ultrasonic transmitter to the two top corners of said cuboid object that are triagonally opposed to the two bottom corners of said side of said object that is positioned against said at least one locating element;

causing said ultrasonic transmitter to emit an ultrasonic pulse while touching each of said top corners;

receiving said ultrasonic pulses at said ultrasonic receivers; and

using said two-touch multilateration algorithm to calculate the dimensions of said cuboid object.

17. The method of claim 16, further comprising using an ultrasonic pulse calibrator to compensate for the effects of one or more atmospheric conditions on the speed of travel of said ultrasonic pulses emitted by said ultrasonic transmitter.

18. The method of claim 16, further comprising using readings from atmospheric sensors to compensate for the effects of one or more atmospheric conditions on the speed of travel of said ultrasonic pulses emitted by said ultrasonic transmitter.

19. The method of claim 16, further comprising providing sensors to automatically detect the presence of said cuboid object against said at least one locating element, and to automatically select said two-touch multilateration algorithm to calculate the dimensions of said cuboid object.

20. A three-touch ultrasonic method of dimensioning a cuboid object, comprising:

providing an ultrasonic dimensioning system, said system further comprising;

a substantially planar object support surface,

at least three ultrasonic receivers positioned to be above said cuboid object when said cuboid object resides on said object support surface,

at least one ultrasonic transmitter for transmitting ultrasonic pulses to said at least three ultrasonic receivers while touching said cuboid object, and

a microprocessor in communication with said at least three receivers and said at least one transmitter, said microprocessor programmed with at least a three-touch multilateration algorithm,

placing a bottom surface of said cuboid object on said object support surface;

separately touching said ultrasonic transmitter to any three top corners of said cuboid object;

causing said ultrasonic transmitter to emit an ultrasonic pulse while touching each of said any three top corners;

receiving said ultrasonic pulses at said ultrasonic receivers; and

using said three-touch multilateration algorithm to calculate the dimensions of said cuboid object.

21. The method of claim 20, further comprising using an ultrasonic pulse calibrator to compensate for the effects of one or more atmospheric conditions on the speed of travel of said ultrasonic pulses emitted by said ultrasonic transmitter.

22. The method of claim 20, further comprising using readings from atmospheric sensors to compensate for the effects of one or more atmospheric conditions on the speed of travel of said ultrasonic pulses emitted by said ultrasonic transmitter.

23. A five-touch ultrasonic method of dimensioning a cuboid of a size sufficient to enclose an object of interest, comprising:

providing an ultrasonic dimensioning system, said system further comprising;

a substantially planar object support surface,

at least three ultrasonic receivers positioned to be above said object of interest when said object of interest resides on said object support surface,

at least one ultrasonic transmitter for transmitting ultrasonic pulses to said at least three ultrasonic receivers while touching said cuboid object, and

a microprocessor in communication with said at least three receivers and said at least one transmitter, said microprocessor programmed with at least a five-touch multilateration algorithm,

defining a major axis of said object of interest;

separately touching said ultrasonic transmitter, in no particular order, to two points on opposite sides of said object of interest and lying as far apart as possible on lines substantially parallel to said major axis, and to two points on opposite sides of said object of interest and lying as far apart as possible on lines substantially perpendicular to said major axis;

subsequent thereto, touching said ultrasonic transmitter to a fifth point, said fifth point being a point on said object of interest that lies the farthest away from said object support surface;

causing said ultrasonic transmitter to emit an ultrasonic pulse while touching each of said five points;

receiving said ultrasonic pulses at said ultrasonic receivers; and

using said five-touch multilateration algorithm to calculate the dimensions of a cuboid of sufficient size to enclose said object of interest.

24. The method of claim 23, wherein said substantially planar object support surface is a floor.

25. The method of claim 23, wherein said ultrasonic dimensioning system is portable and may be transported to the location of said object of interest.