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Title: 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:
 [1];  [2];  [1];  [1]
  1. Idaho Falls, ID
  2. Shelley, ID
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014035
Patent Number(s):
7,652,572
Application Number:
US Patent Application 11/539,678
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
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 = {2010},
month = {1}
}

Patent:

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