SE9700542L - Method of deactivating an item monitoring sensor - Google Patents
Method of deactivating an item monitoring sensorInfo
- 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
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).
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)
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 |
-
1997
- 1997-02-17 SE SE9700542A patent/SE9700542L/en not_active Application Discontinuation
-
1998
- 1998-02-13 EP EP98904491A patent/EP1010154A1/en not_active Withdrawn
- 1998-02-13 WO PCT/SE1998/000252 patent/WO1998036394A1/en not_active Application Discontinuation
- 1998-02-13 JP JP53566298A patent/JP2001511927A/en active Pending
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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