SE9700542L - Method of deactivating an item monitoring sensor - Google Patents

Method of deactivating an item monitoring sensor

Info

Publication number
SE9700542L
SE9700542L SE9700542A SE9700542A SE9700542L SE 9700542 L SE9700542 L SE 9700542L SE 9700542 A SE9700542 A SE 9700542A SE 9700542 A SE9700542 A SE 9700542A SE 9700542 L SE9700542 L SE 9700542L
Authority
SE
Sweden
Prior art keywords
sensor
deactivating
sensor element
volume
monitoring sensor
Prior art date
Application number
SE9700542A
Other languages
Swedish (sv)
Other versions
SE9700542D0 (en
Inventor
Carl Tyren
Original Assignee
Rso Corp
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 Rso Corp filed Critical Rso Corp
Priority to SE9700542A priority Critical patent/SE9700542L/en
Publication of SE9700542D0 publication Critical patent/SE9700542D0/en
Priority to EP98904491A priority patent/EP1010154A1/en
Priority to PCT/SE1998/000252 priority patent/WO1998036394A1/en
Priority to JP53566298A priority patent/JP2001511927A/en
Publication of SE9700542L publication Critical patent/SE9700542L/en

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
    • G08B13/2411—Tag deactivation
    • 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details
    • 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
    • G08B13/2428—Tag details
    • G08B13/2437—Tag layered structure, processes for making layered tags
    • G08B13/2445—Tag integrated into item to be protected, e.g. source tagging

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

An article surveillance sensor (21) comprises a non-crystalline, metallic sensor element (22), which in an active state is arranged to be magnetically or electromagnetically excited and detected, respectively, in an article surveillance system (10-18). The sensor is deactivated by the provision of thermal energy to the sensor element, so that the temperature of the sensor material exceeds its crystallization temperature and at least parts of the sensor element are crystallized. The sensor (21) is arranged together with a monitored article (20) in a deactivating volume (30). Essentially the entire deactivating volume is exposed to a magnetic or electromagnetic field, which is generated by external means (40; 50, 52, 54) and which varies in time, for contactless generation of thermal energy in the sensor element (22).
SE9700542A 1997-02-17 1997-02-17 Method of deactivating an item monitoring sensor SE9700542L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9700542A SE9700542L (en) 1997-02-17 1997-02-17 Method of deactivating an item monitoring sensor
EP98904491A EP1010154A1 (en) 1997-02-17 1998-02-13 Method of deactivating an article surveillance sensor
PCT/SE1998/000252 WO1998036394A1 (en) 1997-02-17 1998-02-13 Method of deactivating an article surveillance sensor
JP53566298A JP2001511927A (en) 1997-02-17 1998-02-13 Method of deactivating article monitoring sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9700542A SE9700542L (en) 1997-02-17 1997-02-17 Method of deactivating an item monitoring sensor

Publications (2)

Publication Number Publication Date
SE9700542D0 SE9700542D0 (en) 1997-02-17
SE9700542L true SE9700542L (en) 1998-08-18

Family

ID=20405814

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9700542A SE9700542L (en) 1997-02-17 1997-02-17 Method of deactivating an item monitoring sensor

Country Status (4)

Country Link
EP (1) EP1010154A1 (en)
JP (1) JP2001511927A (en)
SE (1) SE9700542L (en)
WO (1) WO1998036394A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510489A (en) * 1982-04-29 1985-04-09 Allied Corporation Surveillance system having magnetomechanical marker
US4686516A (en) * 1984-11-26 1987-08-11 Sensormatic Electronics Corporation Method, system and apparatus for use in article surveillance
US5126720A (en) * 1991-01-17 1992-06-30 Knogo Corporation Method and apparatus for deactivating magnetic targets
US5432499A (en) * 1993-05-27 1995-07-11 Minnesota Mining And Manufacturing Company Collector type article surveillance marker with continuous keeper

Also Published As

Publication number Publication date
EP1010154A1 (en) 2000-06-21
JP2001511927A (en) 2001-08-14
SE9700542D0 (en) 1997-02-17
WO1998036394A1 (en) 1998-08-20

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