Footwear scanning systems and methods

Patent metadata

Field	Value
Publication number	US-9715012-B2
Application number	US-201313870835-A
Country	US
Kind code	B2
Filing date	Apr 25, 2013
Priority date	Apr 25, 2013
Publication date	Jul 25, 2017
Grant date	Jul 25, 2017

Abstract

Methods and apparatus for scanning articles, such as footwear, to provide information regarding the contents of the articles are described. According to one aspect, a footwear scanning system includes a platform configured to contact footwear to be scanned, an antenna array configured to transmit electromagnetic waves through the platform into the footwear and to receive electromagnetic waves from the footwear and the platform, a transceiver coupled with antennas of the antenna array and configured to apply electrical signals to at least one of the antennas to generate the transmitted electromagnetic waves and to receive electrical signals from at least another of the antennas corresponding to the electromagnetic waves received by the others of the antennas, and processing circuitry configured to process the received electrical signals from the transceiver to provide information regarding contents within the footwear.

First claim

What is claimed is:

1. A footwear scanning system comprising:
a platform configured to contact footwear to be scanned;
an antenna array configured to transmit electromagnetic waves through the platform into the footwear and to receive electromagnetic waves from the footwear and the platform;
a transceiver coupled with antennas of the antenna array and configured to apply electrical signals to at least one of the antennas to generate the transmitted electromagnetic waves and to receive electrical signals from at least another of the antennas corresponding to the electromagnetic waves received by the at least another of the antennas;
processing circuitry configured to process the received electrical signals from the transceiver to provide information regarding contents within the footwear;
wherein the platform comprises a conformal support surface configured to conform to different surface features of soles of the footwear; and
wherein the conformal support surface is a retention layer over a plurality of movable members.

2. The system of claim 1 wherein the platform comprises an impedance matching material having a dielectric constant which corresponds to dielectric material of the soles of the footwear.

3. The system of claim 1 wherein the platform is in contact with the footwear during the transmission of the electromagnetic waves from the antenna array into the footwear and the reception of the electromagnetic waves by the antenna array from the footwear.

4. The system of claim 1 wherein the antenna array is positioned external of the platform and adjacent to a surface of the platform which is opposite to the conformal support surface.

5. The system of claim 1 wherein the antenna array is configured to move below different portions of the platform during the transmission of the electromagnetic waves from the antenna array into the footwear and the reception of the electromagnetic waves by the antenna array from the footwear.

6. The system of claim 5 wherein the antennas of the antenna array are aligned along a first axis and the antenna array is configured to move in a rectilinear scan path along a second axis which is orthogonal to the first axis to provide a 2D scanning aperture below the platform and the footwear.

7. The system of claim 1 wherein the transmitted electromagnetic waves are within a frequency range of about 1 GHz to about 40 GHz.

8. The system of claim 1 wherein the at least another antenna is configured to receive the transmitted electromagnetic waves from the at least one antenna, and the at least one and another antennas comprise circular cross-polarized antennas.

9. The system of claim 1 further comprising a display, and wherein the processing circuitry is configured to control the display to depict an image of the contents within the footwear to provide the information.

10. The system of claim 1 wherein the antenna array is positioned adjacent to the platform and configured to receive the electromagnetic waves from the footwear and the platform after passage of the electromagnetic waves through the platform.

11. The system of claim 1 wherein the platform is configured to simultaneously support the footwear of two feet of an individual, and the antenna array is configured to transmit the electromagnetic waves through the platform into the footwear of the two feet of the individual and to receive the electromagnetic waves from the footwear of the two feet of the individual and the platform.

12. The system of claim 1 wherein the antenna array comprises a first column of a plurality of transmit antennas and a second column of a plurality of receive antennas.

13. The system of claim 1 wherein the moveable members comprise a material having a dielectric constant which corresponds to a dielectric constant of the soles of the footwear.

14. The system of claim 1 wherein the antennas of the antenna array include transmit antennas and receive antennas, and the processing circuitry is configured to select pairs of the transmit and receive antennas to transmit and receive the electromagnetic waves based upon a wavelength of the electromagnetic waves.

15. The system of claim 1 further comprising an electrical conductor which conducts the electrical signals from the transceiver to the at least one of the antennas.

16. The system of claim 1 wherein the electromagnetic waves are microwaves.

Assignees

• Battelle Memorial Institute

Inventors

• Fernandes Justin L
• Mcmakin Douglas L
• Sheen David M
• Tedeschi Jonathan R

Classifications

• G01S7/41

  using analysis of echo signal for target characterisation; Target signature; Target cross-section · CPC title

• G01S13/887 Primary

  for detection of concealed objects, e.g. contraband or weapons · CPC title

• G01V3/12

  operating with electromagnetic waves {(operating with millimetre waves G01V8/005)} · CPC title

• G01S13/89

  for mapping or imaging · CPC title

• G01V8/005

  operating with millimetre waves, e.g. measuring the black losey radiation · CPC title