ULTRASONIC DIMENSIONING SYSTEM AND METHOD

• US 20110162456A1
• Filed: 03/16/2011
• Published: 07/07/2011
• 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: Winfrey, Helen, Li, Wenquan, Hindmon, Hugh G., Metzler, Philip M., Churan, John Scott
• Application Number:
  US13/049,164
• Publication Number:
  US 20110162456A1
• Time in Patent Office: Days
• US Class Current: 73/632
• 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. A five-touch ultrasonic method of dimensioning an object of interest, comprising:

providing an ultrasonic dimensioning system, said system further comprising;

an object support surface,

at least three ultrasonic receivers adapted to be in a suitable position relative to 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 computing device in communication with said at least three receivers and said at least one transmitter, said computing device programmed with at least a five-touch multilateration algorithm;

determining a major axis of said object of interest;

separately touching said ultrasonic transmitter, in no particular order, to a first set of two points on opposite sides of said object of interest and lying a sufficient distance apart, to a second set of two points on opposite sides of said object of interest and lying a sufficient distance apart, and to a fifth point being a sufficient distance 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 determine dimensions of said object of interest.

2. The method of claim 1, wherein said object support surface is substantially planar.

3. The method of claim 1, wherein said object support surface is selected from the group consisting of ground, a floor, a pallet, a platter, and a weighing scale.

4. The method of claim 1, further comprising the step of determining a weight of said object of interest.

5. The method of claim 1, wherein said at least three ultrasonic receivers are positioned above said object of interest when said object of interest resides on said object support surface.

6. The method of claim 1, wherein said computing device is selected from the group consisting of microprocessors and microcontrollers.

7. The method of claim 1, wherein said touching step includes physically contacting said object of interest with said ultrasonic transmitter or positioning said ultrasonic transmitter sufficiently near said object of interest to provide desired accuracy.

8. The method of claim 1, wherein:

said first set of two points lie as far apart as possible in a first direction relative to each other; and

said second set of two points lie as far apart as possible in a second direction relative to each other.

9. The method of claim 8, wherein:

said first direction is generally parallel to said major axis; and

said second direction is generally perpendicular to said major axis.

10. The method of claim 1, wherein said fifth point is a point on said object of interest as far as possible from said object support surface.

11. The method of claim 1 further comprising the step of providing at least one locating element to locate at least one side of object of interest.

12. The method of claim 1, further comprising the step of 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.

13. The method of claim 1, 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.

14. The method of claim 1, further comprising providing sensors to automatically detect the presence of said object of interest and to automatically select said five-touch multilateration algorithm to calculate the dimensions of said object of interest.

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

16. The method of claim 1, wherein said ultrasonic transmitter is adapted to transmit an ultrasonic pulse automatically when touched to said object of interest.

17. The method of claim 1, further comprising the step of dimensioning a cuboid of a size sufficient to enclose said object of interest.

18. 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.

19. The method of claim 18, wherein said substantially planar object support surface is a floor.

20. The method of claim 18, wherein said ultrasonic dimensioning system is portable and may be transported to the location of said object of interest.