JPS6144359B2 - - Google Patents
Info
- Publication number
- JPS6144359B2 JPS6144359B2 JP53061527A JP6152778A JPS6144359B2 JP S6144359 B2 JPS6144359 B2 JP S6144359B2 JP 53061527 A JP53061527 A JP 53061527A JP 6152778 A JP6152778 A JP 6152778A JP S6144359 B2 JPS6144359 B2 JP S6144359B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- coil
- coils
- passage
- field generating
- 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
Links
- 230000005291 magnetic effect Effects 0.000 claims description 140
- 238000001514 detection method Methods 0.000 claims description 69
- 239000003550 marker Substances 0.000 claims description 38
- 238000007689 inspection Methods 0.000 claims description 30
- 210000001624 hip Anatomy 0.000 claims description 12
- 230000005294 ferromagnetic effect Effects 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 3
- 230000005284 excitation Effects 0.000 claims 2
- 230000010355 oscillation Effects 0.000 claims 2
- 230000002045 lasting effect Effects 0.000 claims 1
- 230000003252 repetitive effect Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000009429 electrical wiring Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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)
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 |
---|---|
JPS53145600A JPS53145600A (en) | 1978-12-18 |
JPS6144359B2 true JPS6144359B2 (US07345094-20080318-C00003.png) | 1986-10-02 |
Family
ID=25177202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6152778A Granted JPS53145600A (en) | 1977-05-24 | 1978-05-23 | Device for detecting pass of matter through checked zone |
Country Status (8)
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0199789U (US07345094-20080318-C00003.png) * | 1987-12-25 | 1989-07-04 |
Families Citing this family (61)
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 |
US5103234A (en) * | 1987-08-28 | 1992-04-07 | Sensormatic Electronics Corporation | Electronic article surveillance system |
DE3844848C2 (de) * | 1987-08-28 | 1995-11-23 | Sensormatic Electronics Corp | Antenne für eine Anlage zur Artikelüberwachung |
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 |
DE59406653D1 (de) * | 1993-07-13 | 1998-09-17 | Actron Entwicklungs Ag | Antennenvorrichtung |
NZ283706A (en) * | 1994-04-18 | 1997-02-24 | John Douglas Frank Finlayson | Flat polygonal antenna located vertically against a wall of a passageway, typically for monitoring cattle |
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 |
WO1996038877A1 (en) * | 1995-05-30 | 1996-12-05 | Sensormatic Electronics Corporation | Eas system antenna configuration for providing improved interrogation field distribution |
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 |
US6289141B1 (en) * | 1998-01-15 | 2001-09-11 | 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 |
EP1388216B1 (en) * | 2001-05-04 | 2009-06-17 | Nxp B.V. | Communication device with a coil configuration for the communication with stationary data carriers |
US8148989B2 (en) * | 2002-03-11 | 2012-04-03 | Keith Kopp | Ferromagnetic detection enhancer compatible with magnetic resonance |
US7315166B2 (en) * | 2003-01-17 | 2008-01-01 | Mednovus, Inc. | Magnetic resonance imaging screening method and apparatus |
US7154266B2 (en) * | 2003-01-17 | 2006-12-26 | Quantum Magnetics, Inc. | 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 |
US20100182149A1 (en) * | 2004-05-18 | 2010-07-22 | Marino Ronald A | 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 |
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 |
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 |
US8933790B2 (en) * | 2007-06-08 | 2015-01-13 | Checkpoint Systems, Inc. | Phase coupler for rotating fields |
CA2690153A1 (en) * | 2007-06-08 | 2008-12-18 | Checkpoint Systems, Inc. | Dynamic eas detection system and method |
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)
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 |
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 |
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 |
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 |
-
1977
- 1977-05-24 US US05/799,976 patent/US4135183A/en not_active Expired - Lifetime
-
1978
- 1978-04-27 CA CA302,182A patent/CA1113576A/en not_active Expired
- 1978-05-19 NL NL7805433A patent/NL191960C/xx not_active IP Right Cessation
- 1978-05-23 JP JP6152778A patent/JPS53145600A/ja active Granted
- 1978-05-23 AU AU36372/78A patent/AU520720B2/en not_active Expired
- 1978-05-23 FR FR7815324A patent/FR2392456A1/fr active Granted
- 1978-05-23 DE DE19782823191 patent/DE2823191A1/de active Granted
- 1978-05-23 GB GB21487/78A patent/GB1599138A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0199789U (US07345094-20080318-C00003.png) * | 1987-12-25 | 1989-07-04 |
Also Published As
Publication number | Publication date |
---|---|
NL191960B (nl) | 1996-07-01 |
NL191960C (nl) | 1996-11-04 |
AU520720B2 (en) | 1982-02-25 |
GB1599138A (en) | 1981-09-30 |
JPS53145600A (en) | 1978-12-18 |
US4135183A (en) | 1979-01-16 |
FR2392456A1 (fr) | 1978-12-22 |
NL7805433A (nl) | 1978-11-28 |
FR2392456B1 (US07345094-20080318-C00003.png) | 1984-08-10 |
AU3637278A (en) | 1979-11-29 |
CA1113576A (en) | 1981-12-01 |
DE2823191A1 (de) | 1978-11-30 |
DE2823191C2 (US07345094-20080318-C00003.png) | 1989-01-12 |
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