Methods, systems and devices for detecting and locating ferromagnetic objects
Abstract
Methods for detecting and locating ferromagnetic objects in a security screening system. One method includes a step of acquiring magnetic data that includes magnetic field gradients detected during a period of time. Another step includes representing the magnetic data as a function of the period of time. Another step includes converting the magnetic data to being represented as a function of frequency. Another method includes a step of sensing a magnetic field for a period of time. Another step includes detecting a gradient within the magnetic field during the period of time. Another step includes identifying a peak value of the gradient detected during the period of time. Another step includes identifying a portion of time within the period of time that represents when the peak value occurs. Another step includes configuring the portion of time over the period of time to represent a ratio.
- Inventors:
-
- Idaho Falls, ID
- Shelley, ID
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1014035
- Patent Number(s):
- 7652572
- Application Number:
- US Patent Application 11/539,678
- Assignee:
- Battelle Energy Alliance, LLC (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
- DOE Contract Number:
- AC07-05ID14517
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Roybal, Lyle Gene, Kotter, Dale Kent, Rohrbaugh, David Thomas, and Spencer, David Frazer. Methods, systems and devices for detecting and locating ferromagnetic objects. United States: N. p., 2010.
Web.
Roybal, Lyle Gene, Kotter, Dale Kent, Rohrbaugh, David Thomas, & Spencer, David Frazer. Methods, systems and devices for detecting and locating ferromagnetic objects. United States.
Roybal, Lyle Gene, Kotter, Dale Kent, Rohrbaugh, David Thomas, and Spencer, David Frazer. Tue .
"Methods, systems and devices for detecting and locating ferromagnetic objects". United States. https://www.osti.gov/servlets/purl/1014035.
@article{osti_1014035,
title = {Methods, systems and devices for detecting and locating ferromagnetic objects},
author = {Roybal, Lyle Gene and Kotter, Dale Kent and Rohrbaugh, David Thomas and Spencer, David Frazer},
abstractNote = {Methods for detecting and locating ferromagnetic objects in a security screening system. One method includes a step of acquiring magnetic data that includes magnetic field gradients detected during a period of time. Another step includes representing the magnetic data as a function of the period of time. Another step includes converting the magnetic data to being represented as a function of frequency. Another method includes a step of sensing a magnetic field for a period of time. Another step includes detecting a gradient within the magnetic field during the period of time. Another step includes identifying a peak value of the gradient detected during the period of time. Another step includes identifying a portion of time within the period of time that represents when the peak value occurs. Another step includes configuring the portion of time over the period of time to represent a ratio.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 26 00:00:00 EST 2010},
month = {Tue Jan 26 00:00:00 EST 2010}
}