DE2823191C2 - - Google Patents

Info

Publication number
DE2823191C2
DE2823191C2 DE2823191A DE2823191A DE2823191C2 DE 2823191 C2 DE2823191 C2 DE 2823191C2 DE 2823191 A DE2823191 A DE 2823191A DE 2823191 A DE2823191 A DE 2823191A DE 2823191 C2 DE2823191 C2 DE 2823191C2
Authority
DE
Germany
Prior art keywords
magnetic field
coils
generating
coil
detecting
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DE2823191A
Other languages
German (de)
English (en)
Other versions
DE2823191A1 (de
Inventor
Eugene Casmir Saint Paul Minn. Us Heltemes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of DE2823191A1 publication Critical patent/DE2823191A1/de
Application granted granted Critical
Publication of DE2823191C2 publication Critical patent/DE2823191C2/de
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
    • G08B13/2408—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using ferromagnetic tags
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2474—Antenna or antenna activator geometry, arrangement or layout

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
DE19782823191 1977-05-24 1978-05-23 Verbessertes system zur diebstahlsicherung mit achterfoermigen feld- und detektorspulen Granted DE2823191A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/799,976 US4135183A (en) 1977-05-24 1977-05-24 Antipilferage system utilizing "figure-8" shaped field producing and detector coils

Publications (2)

Publication Number Publication Date
DE2823191A1 DE2823191A1 (de) 1978-11-30
DE2823191C2 true DE2823191C2 (US07714131-20100511-C00024.png) 1989-01-12

Family

ID=25177202

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782823191 Granted DE2823191A1 (de) 1977-05-24 1978-05-23 Verbessertes system zur diebstahlsicherung mit achterfoermigen feld- und detektorspulen

Country Status (8)

Country Link
US (1) US4135183A (US07714131-20100511-C00024.png)
JP (1) JPS53145600A (US07714131-20100511-C00024.png)
AU (1) AU520720B2 (US07714131-20100511-C00024.png)
CA (1) CA1113576A (US07714131-20100511-C00024.png)
DE (1) DE2823191A1 (US07714131-20100511-C00024.png)
FR (1) FR2392456A1 (US07714131-20100511-C00024.png)
GB (1) GB1599138A (US07714131-20100511-C00024.png)
NL (1) NL191960C (US07714131-20100511-C00024.png)

Families Citing this family (62)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations
DK145169C (da) * 1978-08-09 1983-02-21 Security Prod Int Anlaeg til registrering af en passage af en genstand gennem etforudbestemt omraade
US4384281A (en) * 1980-10-31 1983-05-17 Knogo Corporation Theft detection apparatus using saturable magnetic targets
GB2110825B (en) * 1981-11-06 1986-04-30 Outokumpu Oy Apparatus for detecting metal objects
GB2133660B (en) * 1982-11-09 1986-07-30 Tag Radionics Ltd Transponder detection systems
JPS604977U (ja) * 1983-06-22 1985-01-14 財団法人鉄道総合技術研究所 金属検知器用コイル
US4642613A (en) * 1984-03-16 1987-02-10 Knogo Corporation Electronic theft detection apparatus with responder elements on protected articles
US4633250A (en) * 1985-01-07 1986-12-30 Allied Corporation Coplanar antenna for proximate surveillance systems
US4683461A (en) * 1985-09-17 1987-07-28 Allied Corporation Inductive magnetic field generator
US4697170A (en) * 1985-10-31 1987-09-29 Minnesota Mining And Manufacturing Company Method for minimizing false alarms and electronic noise in electronic article surveillance systems.
US4677799A (en) * 1985-12-03 1987-07-07 Minnesota Mining And Manufacturing Company Multi-sectional raceway
DE3844848C2 (de) * 1987-08-28 1995-11-23 Sensormatic Electronics Corp Antenne für eine Anlage zur Artikelüberwachung
US5103234A (en) * 1987-08-28 1992-04-07 Sensormatic Electronics Corporation Electronic article surveillance system
JPH0199789U (US07714131-20100511-C00024.png) * 1987-12-25 1989-07-04
US4870391A (en) * 1988-04-05 1989-09-26 Knogo Corporation Multiple frequency theft detection system
GB8808933D0 (en) * 1988-04-15 1988-05-18 Scient Generics Ltd Antipilferage system
US4888579A (en) * 1988-09-16 1989-12-19 Minnesota Mining And Manufacturing Company False alarm minimization and direction determination methods
US4994939A (en) * 1989-11-15 1991-02-19 Minnesota Mining And Manufacturing Company Universal lattice for magnetic-electronic article surveillance system
US5321412A (en) * 1991-05-13 1994-06-14 Sensormatic Electronics Corporation Antenna arrangement with reduced coupling between transmit antenna and receive antenna
US5404147A (en) * 1992-10-28 1995-04-04 Sensormatic Electronics Corporation EAS system loop antenna having three loops of different area
IT1265721B1 (it) * 1992-11-11 1996-12-02 Alessandro Manneschi Metal detector ad avvolgimenti multipolari con l'eliminazione di effetti neutralizzanti
US5387900A (en) * 1992-11-19 1995-02-07 Sensormatic Electronics Corporation EAS system with improved processing of antenna signals
US5440296A (en) * 1993-04-29 1995-08-08 Minnesota Mining And Manufacturing Company Coil assembly for electronic article surveillance system
ES2122209T3 (es) * 1993-07-13 1998-12-16 Actron Entwicklungs Ag Dispositivo de antena.
DE69515472T2 (de) * 1994-04-18 2000-09-07 Alfa Laval Agri Ab Tumba Antennenanordnung
AU672556B2 (en) * 1994-04-18 1996-10-03 Delaval Holding Ab Antenna arrangement
JPH08255290A (ja) * 1995-03-16 1996-10-01 Alps Electric Co Ltd 盗難監視装置
AU692696B2 (en) * 1995-04-07 1998-06-11 Minnesota Mining And Manufacturing Company Electronic article surveillance system with adaptative filtering and digital detection
ES2284172T3 (es) * 1995-05-30 2007-11-01 Sensormatic Electronics Corporation Configuracion de antenas para un sistema electronico de vigilancia de articulos con distribucion del campo de interrogacion mejorada.
JP3528367B2 (ja) * 1995-09-30 2004-05-17 ソニーケミカル株式会社 リーダ・ライタ用アンテナ
US5914692A (en) * 1997-01-14 1999-06-22 Checkpoint Systems, Inc. Multiple loop antenna with crossover element having a pair of spaced, parallel conductors for electrically connecting the multiple loops
CA2258436A1 (en) * 1998-01-15 1999-07-15 Morton F. Roseman Apparatus for authenticating products and authorizing processes using the magnetic properties of a marker
ITAR20000040A1 (it) * 2000-09-08 2002-03-08 Alessandro Manneschi Trasduttore lettore di transponder per il controllo dei passaggi
DE60232652D1 (de) * 2001-05-04 2009-07-30 Nxp Bv Kommunikationsgerät mit spulenkonfiguration zur kommunikation mit stationären datenträgern
US8148989B2 (en) * 2002-03-11 2012-04-03 Keith Kopp Ferromagnetic detection enhancer compatible with magnetic resonance
US7154266B2 (en) * 2003-01-17 2006-12-26 Quantum Magnetics, 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
US7834816B2 (en) * 2003-07-25 2010-11-16 Sensormatic Electronics Llc Apparatus for and method of using a diversity antenna
WO2005116945A2 (en) * 2004-05-18 2005-12-08 Meadwestvaco Corporation Apparatus for and method of using rfid antenna configurations
US20060022670A1 (en) * 2004-07-31 2006-02-02 Mednovus, Inc. Magnetic resonance screening portal with combination sensing
US7591415B2 (en) * 2004-09-28 2009-09-22 3M Innovative Properties Company Passport reader for processing a passport having an RFID element
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
US20060279406A1 (en) * 2005-06-07 2006-12-14 Robert Stewart Synchronization and adaptive timing method for multiple RFID reader system
US20070057786A1 (en) * 2005-09-13 2007-03-15 Mednovus, Inc. Ferromagnetic threat warning system
US7733290B2 (en) 2005-12-19 2010-06-08 Sensormatic Electronics, LLC Merchandise surveillance system antenna and method
US20070252001A1 (en) * 2006-04-25 2007-11-01 Kail Kevin J Access control system with RFID and biometric facial recognition
US20080281187A1 (en) * 2006-10-18 2008-11-13 Mednovus, Inc. Ferromagnetic threat detection method apparatus
EP2153491A2 (en) * 2007-06-08 2010-02-17 Checkpoint Systems, Inc. Dynamic eas detection system and method
US8933790B2 (en) * 2007-06-08 2015-01-13 Checkpoint Systems, Inc. Phase coupler for rotating fields
JP4539699B2 (ja) * 2007-09-19 2010-09-08 富士ゼロックス株式会社 携行物管理ゲート
JP2010276351A (ja) * 2009-05-26 2010-12-09 Gunze Ltd 磁性物体検出装置
DE102010027639B4 (de) 2010-07-19 2023-03-30 Sew-Eurodrive Gmbh & Co Kg Spuleneinrichtung und Spulenanordnung
US8763914B2 (en) 2012-01-17 2014-07-01 On Track Innovations Ltd. Decoupled contactless bi-directional systems and methods
DE202012008852U1 (de) * 2012-09-17 2013-12-18 Checkpoint Systems, Inc. Antennenvorrichtung
CN105702442A (zh) * 2016-03-25 2016-06-22 东莞市华盾电子科技有限公司 用于探测器的线圈结构及其构成的通过式探测器
CN105609278A (zh) * 2016-03-25 2016-05-25 东莞市华盾电子科技有限公司 用于通过式探测器的线圈结构及其构成的通过式探测器
CN105632743B (zh) * 2016-03-25 2019-01-29 东莞市华盾电子科技有限公司 一种用于通过式探测器的线圈结构及其构成的探测器
CN106710855B (zh) * 2017-02-09 2024-06-04 东莞市华盾电子科技有限公司 通过式探测器的线圈结构及通过式探测器
CN106710856B (zh) * 2017-02-10 2024-06-07 东莞市华盾电子科技有限公司 通过式探测器的线圈结构及通过式探测器

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR763681A (fr) * 1933-11-10 1934-05-04 Procédé de repérage des objets par modification d'un champ magnétique
US3790945A (en) * 1968-03-22 1974-02-05 Stoplifter Int Inc Open-strip ferromagnetic marker and method and system for using same
US3747086A (en) * 1968-03-22 1973-07-17 Shoplifter International Inc Deactivatable ferromagnetic marker for detection of objects having marker secured thereto and method and system of using same
US3697996A (en) * 1969-07-11 1972-10-10 Minnesota Mining & Mfg Electromagnetic field producing apparatus and method for sequentially producing a plurality of fields
US3665449A (en) * 1969-07-11 1972-05-23 Minnesota Mining & Mfg Method and apparatus for detecting at a distance the status and identity of objects
DE2065827C3 (de) * 1969-07-11 1984-08-23 Minnesota Mining And Manufacturing Co., Saint Paul, Minn. Einrichtung zum Erzeugen einer Anzahl elektromagnetischer Felder in einer Abfragezone
US3765007A (en) * 1969-07-11 1973-10-09 Minnesota Mining & Mfg Method and apparatus for detecting at a distance the status and identity of objects
US3758849A (en) * 1972-03-31 1973-09-11 Sperry Rand Corp Metal detector system having identical balanced field coil system on opposite sides of a detection zone
US3820104A (en) * 1972-12-15 1974-06-25 Stop Loss Inc Method and system for detecting an object within a magnetic field interrogation zone
US3838409A (en) * 1973-04-13 1974-09-24 Knogo Corp Field strength uniformity control system for article theft detection system
US3938125A (en) * 1974-02-20 1976-02-10 Minnesota Mining And Manufacturing Company Antipilferage system and marker therefor
US3990065A (en) * 1975-02-20 1976-11-02 The Magnavox Company Theft detection system

Also Published As

Publication number Publication date
GB1599138A (en) 1981-09-30
NL191960C (nl) 1996-11-04
NL7805433A (nl) 1978-11-28
US4135183A (en) 1979-01-16
DE2823191A1 (de) 1978-11-30
CA1113576A (en) 1981-12-01
JPS6144359B2 (US07714131-20100511-C00024.png) 1986-10-02
AU520720B2 (en) 1982-02-25
AU3637278A (en) 1979-11-29
FR2392456A1 (fr) 1978-12-22
FR2392456B1 (US07714131-20100511-C00024.png) 1984-08-10
JPS53145600A (en) 1978-12-18
NL191960B (nl) 1996-07-01

Similar Documents

Publication Publication Date Title
DE2823191C2 (US07714131-20100511-C00024.png)
DE2737129C3 (de) Vorrichtung zur Ermittlung eines sich innerhalb eines Überwachungsbereichs befindlichen Gegenstandes
DE2820166C3 (de) Vorrichtung und Verfahren zum Entdecken des unerlaubten Vorbeiführens von Waren
EP0319637B1 (de) Magnetisches Diebstahl- bzw. Einbruch-Sicherungssystem sowie hierfür geeignetes Sensor-Metallelement
DE69007911T2 (de) Mit Sensoren versehenes Spiel.
DE2339550C3 (de) Automatisches Fahrzeugleitsystem
DE69211122T2 (de) Elektronischer spielapparat
DE3235434C2 (de) Verfahren und Vorrichtung zum Erfassen einer Ware beim Heraustransport aus einer Überwachungszone
DE3743500C2 (de) Elektromagnetische Einrichtung für Lagemessungen
DE3139354A1 (de) Magnetisches ueberwachungssystem mit erkennung geradzahliger und ungeradzahliger harmonischer und phasendiskriminierung
DE69823009T2 (de) Mehrphasiger deaktivator mit mehreren spulen für magnetomechanische eas-etikette
DE2707574A1 (de) Vorrichtung zur beeinflussung biologischer ablaeufe in einem lebenden koerper mit hilfe eines von einer spulenanordnung erzeugten magnetfeldes
WO1987000662A1 (en) Device for verifying coins
DE3143002A1 (de) Vorrichtung zum erkennen eines diebstahls
DE2837637A1 (de) Elektronisches diebstahl-sicherungssystem zur ueberwachung breiter durchgaenge
DE3240964A1 (de) Vorrichtung zum entdecken von metallobjekten
DE3610474A1 (de) Vorrichtung zum messen der induktion eines magnetfeldes
DE2225228C2 (US07714131-20100511-C00024.png)
DE1413643B2 (de) Verfahren zur selbsttaetigen durchfuehrung von arbeitspro grammen mit hilfe eines fahrzeuges
DE4015779A1 (de) Verfahren zur verwendung mit einem dazu passenden ueberwachungssystem fuer gegenstaende zur feststellung und magnetisierung eines magnetischen markierungselements und vorrichtung zur durchfuehrung des verfahrens
DE60202484T2 (de) Schleifenantenne
DE3587293T2 (de) Elektronische Diebstahl-Warneinrichtung.
DE3731329C2 (US07714131-20100511-C00024.png)
DE3015811A1 (de) Verfahren zum deaktivieren eines sicherungsstreifens sowie deaktivator und sicherungsstreifen
EP0279190B1 (de) Induktives Suchgerät

Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition