IN2014MN00149A - - Google Patents

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Publication number
IN2014MN00149A
IN2014MN00149A IN149MUN2014A IN2014MN00149A IN 2014MN00149 A IN2014MN00149 A IN 2014MN00149A IN 149MUN2014 A IN149MUN2014 A IN 149MUN2014A IN 2014MN00149 A IN2014MN00149 A IN 2014MN00149A
Authority
IN
India
Prior art keywords
processing circuit
signal processing
signal
volume
space
Prior art date
Application number
Inventor
Simon Wray Goodyear
Simon Edward James Collinge
Mark Nicholas Keene
Original Assignee
Metrasens Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metrasens Ltd filed Critical Metrasens Ltd
Publication of IN2014MN00149A publication Critical patent/IN2014MN00149A/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Geology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Electromagnetism (AREA)
  • Biophysics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Medical Informatics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Geophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Emergency Alarm Devices (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Apparatus for detecting a ferromagnetic object located on or in a person being screened comprises a first magnetic sensor which in use measures an ambient magnetic field or gradient within a first volume of space and produces a corresponding measurement signal a primary power supply which provides power to the magnetic sensor a signal processing circuit arranged in communication with the magnetic sensors configured to identify temporal variations in the measurement signal and from the identified temporal variations provide an output signal indicative of the presence of a ferromagnetic object within the volume of space and a warning device operable by the output from the signal processing circuit to provide within the vicinity the apparatus at least one of an audible and a visible warning in response to the output signal from the signal processing circuit. The apparatus include a user operable input means which enables the warning device to be disabled by a user without powering down the magnetic sensors.
IN149MUN2014 2011-06-29 2012-06-27 IN2014MN00149A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1111067.3A GB201111067D0 (en) 2011-06-29 2011-06-29 Apparatus for detecting ferromagnetic objects and screening people and equipment
PCT/GB2012/051500 WO2013001292A2 (en) 2011-06-29 2012-06-27 Apparatus for detecting ferromagnetic objects and screening people and equipment

Publications (1)

Publication Number Publication Date
IN2014MN00149A true IN2014MN00149A (en) 2015-06-19

Family

ID=44485374

Family Applications (1)

Application Number Title Priority Date Filing Date
IN149MUN2014 IN2014MN00149A (en) 2011-06-29 2012-06-27

Country Status (8)

Country Link
US (2) US9995713B2 (en)
EP (2) EP2725973B1 (en)
JP (1) JP2014522970A (en)
CN (1) CN103747725A (en)
ES (1) ES2699265T3 (en)
GB (1) GB201111067D0 (en)
IN (1) IN2014MN00149A (en)
WO (1) WO2013001292A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2807494A1 (en) * 2012-03-22 2014-12-03 TDK Corporation Movable coil scanner systems and methods
US20130307533A1 (en) 2012-05-18 2013-11-21 Metrasens Limited Security system and method of detecting contraband items
GB201219097D0 (en) 2012-10-24 2012-12-05 Metrasens Ltd Apparatus for detecting ferromagnetic objects at a protected doorway assembly
JP6152008B2 (en) * 2013-08-01 2017-06-21 株式会社ディード Magnetic detector
JP6357240B2 (en) 2013-10-21 2018-07-11 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Safety monitoring for magnetic resonance imaging
CN103955001A (en) * 2014-05-14 2014-07-30 三峡大学 Invisible earphone detection device and method
EP3234656B1 (en) 2014-12-18 2024-02-07 Metrasens Limited Security system and method of detecting contraband items
GB201602652D0 (en) * 2016-02-15 2016-03-30 Metrasens Ltd Improvements to magnetic detectors
US9860685B1 (en) * 2016-06-29 2018-01-02 Cisco Technology, Inc. Presence indicator signal
GB2556926A (en) 2016-11-25 2018-06-13 Metrasens Ltd Monitoring system for a detection system
GB2558210A (en) * 2016-12-21 2018-07-11 Metrasens Ltd System and apparatus for ferromagnetically screening prone patients
US11287495B2 (en) * 2017-05-22 2022-03-29 Advanced Bionics Ag Methods and apparatus for use with cochlear implants having magnet apparatus with magnetic material particles
DE102017209373A1 (en) * 2017-06-02 2018-12-06 Bruker Biospin Mri Gmbh Fast method for determining the position of a ferromagnetic particle or a bundle of ferromagnetic particles with MRI systems
CN108303746B (en) * 2018-01-17 2021-05-18 上海联影医疗科技股份有限公司 Method for detecting metal object, storage medium and magnetic resonance imaging system
WO2020198568A1 (en) 2019-03-28 2020-10-01 Zkteco Usa System and method for detecting objects
WO2025227224A1 (en) * 2024-04-30 2025-11-06 Xtract One Detection Ltd. System and method for object detection and classification using time-domain electromagnetic transmission

Family Cites Families (24)

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US4024468A (en) * 1975-06-18 1977-05-17 White's Electronics, Inc. Induction balance metal detector with inverse discrimination
US4249128A (en) * 1978-02-06 1981-02-03 White's Electronics, Inc. Wide pulse gated metal detector with improved noise rejection
US4334191A (en) * 1979-01-29 1982-06-08 Garrett Electronics Metal detector circuit having momentary disabled output
US4488115A (en) 1980-11-12 1984-12-11 Garrett Electronics Low battery voltage indicator circuit for a metal detector
ZA876706B (en) * 1986-09-08 1988-05-25 Candy Bruce Halcro Method of discrimination detection using two frequencies
US5039981A (en) * 1989-10-11 1991-08-13 Rodriguez Joe S Electromagnetic security detectors
US5148151A (en) * 1990-06-20 1992-09-15 Garrett Electronics, Inc. Metal detector having target characterization and search classification
US5959451A (en) 1997-08-18 1999-09-28 Torfino Enterprises, Inc. Metal detector with vibrating tactile indicator mounted within a compact housing
GB0124887D0 (en) * 2001-10-17 2001-12-05 Qinetiq Ltd Metal detection apparatus
US8014847B2 (en) * 2001-12-13 2011-09-06 Musc Foundation For Research Development Systems and methods for detecting deception by measuring brain activity
US7489128B2 (en) * 2002-03-11 2009-02-10 Kopp Keith A MRI protector
EP1502129A1 (en) * 2002-04-25 2005-02-02 National Research Council of Canada Detection of ferromagnetic objects approaching a magnet
US7296683B1 (en) 2002-05-22 2007-11-20 Vallelonga Sr Kenneth M Ferrous metal detector with alarm
GB2395276B (en) 2002-11-12 2006-03-08 Qinetiq Ltd Ferromagnetic object detector
US7315166B2 (en) 2003-01-17 2008-01-01 Mednovus, Inc. Magnetic resonance imaging screening method and apparatus
US7239134B2 (en) 2003-01-17 2007-07-03 Mednovus, Inc. Screening method and apparatus
US20060145691A1 (en) 2004-12-30 2006-07-06 Mednovus, Inc. Ferromagnetic detection pillar and variable aperture portal
US7295107B2 (en) * 2004-12-30 2007-11-13 Mednovus, Inc. Ferromagnetic detection pillar
US7408461B2 (en) * 2005-01-11 2008-08-05 Controlled Capture Systems, Llc Metal detection system and method
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US7893690B2 (en) * 2007-07-19 2011-02-22 Carnes Company, Inc. Balancing circuit for a metal detector
GB0905298D0 (en) * 2009-03-27 2009-05-13 Qinetiq Ltd Apparatus and method for ferromagnetic object detector
CN101584583B (en) * 2009-06-16 2010-10-27 中国人民解放军第四军医大学 Portable metal foreign body rapid screening device
US20130307533A1 (en) * 2012-05-18 2013-11-21 Metrasens Limited Security system and method of detecting contraband items

Also Published As

Publication number Publication date
EP2725973B1 (en) 2018-09-26
CN103747725A (en) 2014-04-23
EP3454092A1 (en) 2019-03-13
US20180246063A1 (en) 2018-08-30
US20140232382A1 (en) 2014-08-21
EP2725973A2 (en) 2014-05-07
GB201111067D0 (en) 2011-08-10
JP2014522970A (en) 2014-09-08
ES2699265T3 (en) 2019-02-08
WO2013001292A2 (en) 2013-01-03
US9995713B2 (en) 2018-06-12
WO2013001292A3 (en) 2013-07-04

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