ZA200007370B - Apparatus for detecting metals. - Google Patents

Apparatus for detecting metals. Download PDF

Info

Publication number
ZA200007370B
ZA200007370B ZA200007370A ZA200007370A ZA200007370B ZA 200007370 B ZA200007370 B ZA 200007370B ZA 200007370 A ZA200007370 A ZA 200007370A ZA 200007370 A ZA200007370 A ZA 200007370A ZA 200007370 B ZA200007370 B ZA 200007370B
Authority
ZA
South Africa
Prior art keywords
magnetic field
metal
metal object
processing means
transmitter
Prior art date
Application number
ZA200007370A
Other languages
English (en)
Inventor
Mark Nicholas Keene
Original Assignee
Qinetiq 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 Qinetiq Ltd filed Critical Qinetiq Ltd
Publication of ZA200007370B publication Critical patent/ZA200007370B/en

Links

Classifications

    • 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)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electromagnetism (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
ZA200007370A 1998-06-27 2000-12-11 Apparatus for detecting metals. ZA200007370B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9813889.4A GB9813889D0 (en) 1998-06-27 1998-06-27 Apparatus for detecting metals

Publications (1)

Publication Number Publication Date
ZA200007370B true ZA200007370B (en) 2002-03-11

Family

ID=10834492

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA200007370A ZA200007370B (en) 1998-06-27 2000-12-11 Apparatus for detecting metals.

Country Status (11)

Country Link
US (1) US6541966B1 (ja)
EP (1) EP1092163B1 (ja)
JP (1) JP4173638B2 (ja)
AT (1) ATE266212T1 (ja)
AU (1) AU4281899A (ja)
CA (1) CA2335499C (ja)
DE (1) DE69917030T2 (ja)
GB (2) GB9813889D0 (ja)
NO (1) NO327748B1 (ja)
WO (1) WO2000000848A1 (ja)
ZA (1) ZA200007370B (ja)

Families Citing this family (96)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2806506B1 (fr) * 2000-03-14 2003-07-18 Commissariat Energie Atomique Microsysteme magnetometrique et inclinometrique pour la surveillance d'objets de valeur
WO2001084188A2 (en) * 2000-05-02 2001-11-08 The Johns Hopkins University Steerable three-dimensional magnetic field sensor system for detection and classification of metal targets
US6724191B1 (en) * 2000-05-09 2004-04-20 Admiralty Corporation Systems and methods useful for detecting presence and/or location of various materials
JP4527273B2 (ja) * 2000-12-13 2010-08-18 株式会社レイディック 方位測定方式
GB0124887D0 (en) * 2001-10-17 2001-12-05 Qinetiq Ltd Metal detection apparatus
US7106194B2 (en) * 2001-11-16 2006-09-12 The Johns Hopkins University Method for metal object identification using a three-dimensional steerable magnetic field antenna
US6949930B2 (en) * 2002-04-08 2005-09-27 Witten Technologies, Inc. Time domain induction method and apparatus for locating buried objects in a medium by inducing and measuring transient eddy currents
US6720764B2 (en) 2002-04-16 2004-04-13 Thomas Energy Services Inc. Magnetic sensor system useful for detecting tool joints in a downhold tubing string
AUPS319402A0 (en) * 2002-06-24 2002-07-18 Thorlock International Limited Monitoring probes for nuclear quadrupole resonance measurements (#12)
ES2198217B1 (es) * 2002-07-04 2005-03-16 Surgi-Wire, S.L. Equipo para la deteccion de productos quirurgicos.
US6956369B2 (en) * 2003-01-17 2005-10-18 Mednovus, Inc. Screening method and apparatus
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
US7154266B2 (en) * 2003-01-17 2006-12-26 Quantum Magnetics, Inc. Screening method and apparatus
US20070055142A1 (en) * 2003-03-14 2007-03-08 Webler William E Method and apparatus for image guided position tracking during percutaneous procedures
US7092472B2 (en) * 2003-09-16 2006-08-15 Rambus Inc. Data-level clock recovery
US7397848B2 (en) 2003-04-09 2008-07-08 Rambus Inc. Partial response receiver
US7126378B2 (en) 2003-12-17 2006-10-24 Rambus, Inc. High speed signaling system with adaptive transmit pre-emphasis
EP1615554B1 (en) * 2003-04-15 2017-12-20 Philips Intellectual Property & Standards GmbH Method and arrangement for influencing magnetic particles and detecting interfering material
US7521932B2 (en) * 2003-05-06 2009-04-21 The Penn State Research Foundation Method and system for adjusting the fundamental symmetric mode of coupled high temperature superconductor coils
US7069362B2 (en) * 2003-05-12 2006-06-27 International Business Machines Corporation Topology for shared memory computer system
US7126323B1 (en) 2003-07-25 2006-10-24 Admiralty Corporation Systems and methods for synchronous detection of signals
US7295085B2 (en) * 2003-08-21 2007-11-13 E.I. Du Pont De Nemours And Company Process for making high temperature superconductor devices each having a line oriented in a spiral fashion
US6924644B2 (en) * 2003-09-12 2005-08-02 The United States Of America As Represented By The Secretary Of The Navy Radiofrequency surface detection coil
US20070245374A1 (en) * 2003-11-24 2007-10-18 Inventec Corporation Video program subtitle tex recording method and system
US7301344B2 (en) 2003-11-24 2007-11-27 E.I. Du Pont De Nemours & Co. Q-damping circuit including a high temperature superconductor coil for damping a high temperature superconductor self-resonant coil in a nuclear quadrupole resonance detection system
US7332910B2 (en) * 2003-11-24 2008-02-19 E.I. Du Pont De Nemours And Company Frequency detection system comprising circuitry for adjusting the resonance frequency of a high temperature superconductor self-resonant coil
US7375525B2 (en) * 2003-12-15 2008-05-20 E.I. Du Pont De Nemours And Company Use of multiple sensors in a nuclear quadropole resonance detection system to improve measurement speed
US7233164B2 (en) * 2003-12-17 2007-06-19 Rambus Inc. Offset cancellation in a multi-level signaling system
WO2005109023A2 (en) * 2004-02-04 2005-11-17 E.I. Dupont De Nemours And Company Nqr rf coil assembly comprising two or more coils which may be made from hts
US7355401B2 (en) * 2004-02-04 2008-04-08 E.I. Du Pont De Nemours And Company Use of two or more sensors to detect different nuclear quadrupole resonance signals of a target compound
EP1740967A2 (en) * 2004-04-30 2007-01-10 E.I.Du pont de nemours and company Methods and apparatus for scanning a band of frequencies using an array of high temperature superconductor sensors
US7265549B2 (en) 2004-04-30 2007-09-04 E. I. Du Pont De Nemours And Company Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to the same frequency
US7279897B2 (en) * 2004-04-30 2007-10-09 E. I. Du Pont De Nemours And Company Scanning a band of frequencies using an array of high temperature superconductor sensors tuned to different frequencies
US7088103B2 (en) * 2004-05-11 2006-08-08 White's Electronics, Inc. Metal detector having a plurality of phase delay discrimination regions with corresponding selectable exception spaces therein
US20060022670A1 (en) * 2004-07-31 2006-02-02 Mednovus, Inc. Magnetic resonance screening portal with combination sensing
US7239223B2 (en) * 2004-10-18 2007-07-03 Mednovus, Inc. Enhancement magnetizer for magnetic resonance imaging screening
US7148692B2 (en) 2004-10-20 2006-12-12 White's Electronics, Inc. Detector for non-ferrous metals with reduced false positive responses
WO2006060706A1 (en) 2004-12-03 2006-06-08 E.I. Dupont De Nemours And Company Decoupling of excitation and receive coils of an nqr detection system during signal reception
DE102005057054B4 (de) * 2004-12-09 2016-03-03 Okm Gmbh Tragbares handgeführtes geophysikalisches Ortungsgerät
EP1831714A1 (en) * 2004-12-13 2007-09-12 E.I. Dupont De Nemours And Company Metal shield alarm in a nuclear quadrupole resonance/x-ray contraband detection system
US7170288B2 (en) * 2004-12-22 2007-01-30 Fullerton Larry W Parametric nuclear quadrupole resonance spectroscopy system and method
US20060139025A1 (en) * 2004-12-24 2006-06-29 Mednovus, Inc. Saturation-resistant magnetoresistive sensor for ferromagnetic screening
US7295107B2 (en) * 2004-12-30 2007-11-13 Mednovus, Inc. Ferromagnetic detection pillar
US20060145691A1 (en) * 2004-12-30 2006-07-06 Mednovus, Inc. Ferromagnetic detection pillar and variable aperture portal
WO2006081615A1 (en) * 2005-02-01 2006-08-10 Qrsciences Pty Ltd Method and apparatus for detecting significant shielded volumes
WO2006095251A2 (en) * 2005-03-09 2006-09-14 Anglo Operations Limited Low temperature squid transient electromagnetic receiver system
US10036249B2 (en) * 2005-05-31 2018-07-31 Caterpillar Inc. Machine having boundary tracking system
US7734866B2 (en) * 2005-08-04 2010-06-08 Rambus Inc. Memory with address-differentiated refresh rate to accommodate low-retention storage rows
US20070057786A1 (en) * 2005-09-13 2007-03-15 Mednovus, Inc. Ferromagnetic threat warning system
US8303505B2 (en) * 2005-12-02 2012-11-06 Abbott Cardiovascular Systems Inc. Methods and apparatuses for image guided medical procedures
FR2902197B1 (fr) 2006-06-07 2008-07-25 Univ Bretagne Occidentale Etab Procede de localisation d'un objet magnetique, produit programme d'ordinateur, moyen de stockage et dispositif de localisation correspondants
EP2038680A1 (en) * 2006-06-19 2009-03-25 Minelab Electronics PTY LTD Metal detector with improved detection capabilities
US7397239B2 (en) * 2006-07-11 2008-07-08 Ge Security, Inc. Passenger screening system and method
GB2441346B (en) * 2006-09-01 2011-04-13 Qinetiq Ltd Metal object detecting apparatus
US20080281187A1 (en) * 2006-10-18 2008-11-13 Mednovus, Inc. Ferromagnetic threat detection method apparatus
AU2007308741A1 (en) * 2006-10-24 2008-05-02 Michael Asten A metal detector
WO2008125621A1 (en) * 2007-04-13 2008-10-23 Alert Metalguard Aps A method, a device and a system for preventing false alarms in a theft-preventing system
US20080294036A1 (en) * 2007-04-23 2008-11-27 Device Evolutions, Llc Surgical Metal Detection Apparatus and Methods
CN102171588A (zh) * 2008-08-05 2011-08-31 Mr技术公司 差分梯度测量磁力计、系统及其使用方法
DE102009010943A1 (de) 2009-02-27 2010-09-16 Hilti Aktiengesellschaft Betriebsverfahren und Spulenanordnung für einen magnetischen Sensor zur Detektion metallischer Objekte in einem Untergrund
US8436608B2 (en) * 2009-09-21 2013-05-07 General Electric Company Eddy current inspection system and method
HUE036703T2 (hu) * 2009-10-16 2018-07-30 Alert Systems Aps Elektronikus lopás elleni védelmi rendszer
DE102009058549A1 (de) 2009-12-17 2011-06-22 ThyssenKrupp Fördertechnik GmbH, 45143 Detektionseinrichtung für eine Bandfördereinrichtung und Verfahren zur Detektion von elektrischen leitfähigen Fremdkörpern im Fördergut einer Bandfördereinrichtung
US8842035B2 (en) * 2010-04-08 2014-09-23 L-3 Communications Security And Detection Systems, Inc. Sensor head
US9272157B2 (en) * 2010-05-02 2016-03-01 Nervive, Inc. Modulating function of neural structures near the ear
DE102010028719A1 (de) * 2010-05-07 2011-11-10 Robert Bosch Gmbh Suchgerät
EP2606379B1 (en) * 2010-08-20 2020-01-08 Chemring Sensors and Electronic Systems, Inc. Metal detector and ground-penetrating radar hybrid head and manufacturing method thereof
DE102010043010C5 (de) * 2010-10-27 2017-10-05 Ifm Electronic Gmbh Induktiver Näherungsschalter
US8952699B2 (en) 2011-01-04 2015-02-10 Pnqr Llc Nuclear quadrupole resonance system and method for interfacing with a subject material
DE102011077068A1 (de) 2011-06-07 2012-12-13 Hilti Aktiengesellschaft Verfahren und Vorrichtung zum Detektieren eines leitfähigen Objektes
DE102011079261A1 (de) * 2011-07-15 2013-01-17 Hilti Aktiengesellschaft Vorrichtung und Verfahren zum Detektieren einer Stromleitung in einem Untergrund
WO2013063659A1 (en) * 2011-11-03 2013-05-10 Minelab Electronics Pty Limited Improved metal detection method
EP2828689B1 (en) 2012-03-23 2020-12-16 SeeScan, Inc. Gradient antenna coils and arrays for use in locating systems
US8970219B2 (en) * 2012-05-17 2015-03-03 Louis Marlo Nel Search coil assembly and system for metal detection
US20130307533A1 (en) * 2012-05-18 2013-11-21 Metrasens Limited Security system and method of detecting contraband items
US10031251B2 (en) 2012-10-04 2018-07-24 Chemring Sensors And Electronic Systems, Inc. Shieldings for metal detector heads and manufacturing methods thereof
GB201219097D0 (en) 2012-10-24 2012-12-05 Metrasens Ltd Apparatus for detecting ferromagnetic objects at a protected doorway assembly
EP2808677B1 (en) * 2012-10-27 2021-09-22 Valerian Goroshevskiy Method for non-contact metallic constructions assessment
GB2521398B (en) * 2013-12-18 2020-05-20 Roke Manor Res Limited Techniques for co-siting a metal detector with another detector
US9733379B2 (en) * 2014-06-19 2017-08-15 Metrotech Corporation Line locator with a metal detector
CL2014001897A1 (es) * 2014-07-18 2014-09-22 Cadetech S A Un sistema de monitoreo para la deteccion en forma automatica de elementos ferromagneticos ocultos en la carga de mineral, durante la carga y/o descarga de un contenedor, dicho sistema comprende al menos un sensor de campo magnetico, un computador, un canal de comunicacion de corto alcance, un visualizador, un canal de comunicacion de largo alcance, una fuente de energia, y sensores auxiliares.
CN110045423A (zh) 2014-12-18 2019-07-23 梅特拉森斯有限公司 安全系统及检测违禁品的方法
GB201602652D0 (en) 2016-02-15 2016-03-30 Metrasens Ltd Improvements to magnetic detectors
DE102016108988B4 (de) * 2016-05-13 2019-05-29 Heinrich Hirdes Gmbh Verfahren und Vorrichtung zum Auffinden elektrisch leitfähiger Gegenstände unter einer Bodenoberfläche
WO2018098229A1 (en) * 2016-11-22 2018-05-31 The Research Institute At Nationwide Children's Hospital Apparatus and method for metal-type differentiation
EP3385758A1 (de) 2017-04-05 2018-10-10 HILTI Aktiengesellschaft Vorrichtung und verfahren zum detektieren von elektrisch leitenden messobjekten in einem untergrund
DE102017111722A1 (de) * 2017-05-30 2018-12-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und vorrichtung zum charakterisieren eines objekts, verfahren und vorrichtung zum bestimmen einer zusammensetzung eines objekts sowie verfahren und vorrichtung zum erkennen eines elektrisch leitfähigen und/oder magnetisch permeablen objekts
EP3631946A4 (en) 2017-05-30 2020-12-09 Wireless Advanced Vehicle Electrification Inc. SINGLE-POWERED MULTI-DOCKING RANGE WIRELESS CHARGING
WO2019121629A1 (en) * 2017-12-19 2019-06-27 Lego A/S Play system and method for detecting toys
US11462943B2 (en) 2018-01-30 2022-10-04 Wireless Advanced Vehicle Electrification, Llc DC link charging of capacitor in a wireless power transfer pad
CN113227816A (zh) 2018-10-26 2021-08-06 伊沃夫科技有限公司 具有威胁检测和辨别功能的人员检查
JP7434778B2 (ja) 2019-09-20 2024-02-21 住友ベークライト株式会社 液体注入ポート
KR20220165739A (ko) * 2020-04-08 2022-12-15 가부시키가이샤 인테그랄 지오메트리 사이언스 자기 응답 분포 가시화 장치, 시큐리티 검사 시스템 및 자기 응답 분포 가시화 방법
CN112914772A (zh) * 2020-12-04 2021-06-08 长沙微笑美齿智能科技有限公司 一种抗干扰牙齿种植体探测方法及其探测装置
US20220291412A1 (en) * 2021-03-12 2022-09-15 Christopher Frank Eckman Metal detecting sensor array for discriminating between different objects

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826973A (en) * 1973-01-10 1974-07-30 Benson R Electromagnetic gradiometer
FR2564601B1 (fr) * 1984-05-15 1987-02-06 Petroles Cie Francaise Appareil d'exploration magnetique pour trou de forage
CA1267192A (en) 1987-04-24 1990-03-27 John E. Mcfee Ferrous object locator and classifier
US5119816A (en) * 1990-09-07 1992-06-09 Sam Technology, Inc. EEG spatial placement and enhancement method
US5122744A (en) * 1990-10-09 1992-06-16 Ibm Corporation Gradiometer having a magnetometer which cancels background magnetic field from other magnetometers
US5629626A (en) * 1994-07-12 1997-05-13 Geo-Centers, Inc. Apparatus and method for measuring buried ferromagnetic objects with a high accuracy of position and in synchronization with a sync pulse provided by a global positioning system
DE4436078A1 (de) * 1994-10-10 1996-04-11 Dornier Gmbh Bildgebendes hochauflösendes Sensorsystem zu Detektion, Ortung und Identifizierung von metallischen Objekten
US5552705A (en) * 1995-06-01 1996-09-03 Keller; George V. Non-obtrusive weapon detection system and method for discriminating between a concealed weapon and other metal objects
US5842986A (en) * 1995-08-16 1998-12-01 Proton Sciences Corp. Ferromagnetic foreign body screening method and apparatus
US5642045A (en) * 1995-08-18 1997-06-24 International Business Machines Corporation Magnetic field gradiometer with improved correction circuits
JPH0984777A (ja) * 1995-09-25 1997-03-31 Toshiba Corp 生体磁場計測装置
US6204667B1 (en) * 1998-03-18 2001-03-20 Geophex, Ltd. Electromagnetic gradiometer having a primary detector and a plurality of secondary detectors

Also Published As

Publication number Publication date
JP2003517572A (ja) 2003-05-27
DE69917030T2 (de) 2005-04-28
US6541966B1 (en) 2003-04-01
GB9813889D0 (en) 1998-08-26
JP4173638B2 (ja) 2008-10-29
CA2335499A1 (en) 2000-01-06
EP1092163B1 (en) 2004-05-06
AU4281899A (en) 2000-01-17
GB0029648D0 (en) 2001-01-17
EP1092163A1 (en) 2001-04-18
GB2357853B (en) 2003-01-22
GB2357853A (en) 2001-07-04
NO20006647D0 (no) 2000-12-22
NO327748B1 (no) 2009-09-14
NO20006647L (no) 2001-02-27
WO2000000848A1 (en) 2000-01-06
CA2335499C (en) 2005-03-29
ATE266212T1 (de) 2004-05-15
DE69917030D1 (de) 2004-06-09

Similar Documents

Publication Publication Date Title
EP1092163B1 (en) Apparatus for detecting metals
US7545140B2 (en) Metal object detecting apparatus
US7414404B2 (en) Metal detection apparatus
Yabukami et al. Motion capture system of magnetic markers using three-axial magnetic field sensor
US7603251B1 (en) Magnetic anomaly sensing system for detection, localization and classification of a magnetic object in a cluttered field of magnetic anomalies
US4258322A (en) Electromagnetic subsoil prospecting process using an asymptotic low frequency range
US20040189293A1 (en) Screening method and apparatus
CA2178332A1 (en) Sensor system for detecting, locating and identifying metal objects
JP2005505394A5 (ja)
US6204667B1 (en) Electromagnetic gradiometer having a primary detector and a plurality of secondary detectors
Schneider et al. Inversion of geo-magnetic full-tensor gradiometer data
Smith et al. Multi-transmitter multi-receiver null coupled systems for inductive detection and characterization of metallic objects
Keiswetter et al. Object identification using multifrequency EMI data
Barrowes et al. Pedemis: a portable electromagnetic induction sensor with integrated positioning
US20090276169A1 (en) Methods and Systems for Detecting, Localizing, Imaging and Estimating Ferromagnetic and/or Electrically Conducting Objects
Oden Combining advances in EM induction instrumentation and inversion schemes for UXO characterization
Barrow et al. The combined use of magnetic and electromagnetic sensors for detection and characterization of UXO
Qin et al. Eddy current magnetic localization of nonmagnetic metal targets based on metal shell model
Young et al. Magnetic tensor gradiometry in the marine environment
Ambraš et al. Estimating directional magnetic polarizabilities of metallic objects using planar time-domain electromagnetic induction sensor
Kauppila et al. Classification of items in a walk-through metal detector using time series of eigenvalues of the polarizability tensor
Won et al. Comparison of magnetic and electromagnetic anomalies
McFee et al. A magnetometer system to estimate location and size of long, horizontal ferrous rods
McFee et al. Location and identification of compact metallic objects by magnetics and electromagnetic induction
Barrowes et al. Electromagnetic Induction Sensing of UneXploded Ordnance with Pedemis