ES2139193T3 - Un elemento de alarma. - Google Patents

Un elemento de alarma.

Info

Publication number
ES2139193T3
ES2139193T3 ES95909177T ES95909177T ES2139193T3 ES 2139193 T3 ES2139193 T3 ES 2139193T3 ES 95909177 T ES95909177 T ES 95909177T ES 95909177 T ES95909177 T ES 95909177T ES 2139193 T3 ES2139193 T3 ES 2139193T3
Authority
ES
Spain
Prior art keywords
pct
alternating field
alarm element
circuit
alarm
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 - Lifetime
Application number
ES95909177T
Other languages
English (en)
Inventor
Leif Asbrink
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of ES2139193T3 publication Critical patent/ES2139193T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G08B13/2422—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 acoustic or microwave 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
    • 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
    • G08B13/2431—Tag circuit 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
    • G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
  • Medicines Containing Plant Substances (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

UN ELEMENTO DE ALARMA FORMA PARTE DE UN SISTEMA DE ALARMA Y ESTA CONSTRUIDO PARA RECIBIR UN CAMPO MAGNETICO ALTERNATIVO QUE TIENE UNA FRECUENCIA F Y SE TRANSMITE POR UN TRANSMISOR (2) EN DONDE EL ELEMENTO DE ALARMA ESTA CONSTRUIDO PARA RETRANSMITIR UN CAMPO MAGNETICO ALTERNATIVO SIN ADICCION DE ENERGIA, ESTE CAMPO ALTERNATIVO ES RECIBIDO Y DETECTADO POR UN RECEPTOR (3). LA INVENCION SE CARACTERIZA POR QUE EL ELEMENTO DE ALARMA (4) TIENE UN CIRCUITO QUE INCLUYE UNA BOBINA (L), UN DIODO CAPACITOR (D) Y UNA RESISTENCIA (R) EN SERIE EN UN CIRCUITO CERRADO, Y UN CONDENSADOR (C) CONECTADO EN PARALELO A TRAVES DE LA RESISTENCIA (R) Y EN EL QUE LA BOBINA (L) Y LA CAPACITANCIA DEL DIODO CAPACITOR (D) FORMAN UN CIRCUITO RESONANTE QUE TIENE RESONANCIA A LA FRECUENCIA (F) CUANDO LA TENSION QUE ATRAVIESA EL DIODO (D) ES DE CERO VOLTIOS.
ES95909177T 1994-02-07 1995-02-02 Un elemento de alarma. Expired - Lifetime ES2139193T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9400396A SE508322C2 (sv) 1994-02-07 1994-02-07 Larmelement

Publications (1)

Publication Number Publication Date
ES2139193T3 true ES2139193T3 (es) 2000-02-01

Family

ID=20392835

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95909177T Expired - Lifetime ES2139193T3 (es) 1994-02-07 1995-02-02 Un elemento de alarma.

Country Status (17)

Country Link
US (1) US5751213A (es)
EP (1) EP0744064B1 (es)
JP (1) JPH09508485A (es)
CN (1) CN1140504A (es)
AT (1) ATE187006T1 (es)
AU (1) AU1722895A (es)
BR (1) BR9506863A (es)
CA (1) CA2181344C (es)
DE (1) DE69513505T2 (es)
DK (1) DK0744064T3 (es)
ES (1) ES2139193T3 (es)
PL (1) PL175930B1 (es)
RU (1) RU2138855C1 (es)
SE (1) SE508322C2 (es)
TW (1) TW400508B (es)
WO (1) WO1995021431A1 (es)
ZA (1) ZA95964B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11283178A (ja) * 1998-03-27 1999-10-15 Matsushita Electric Ind Co Ltd 電気共振識別子、電気共振識別子検出装置および交通システム
RU2257614C2 (ru) * 1999-12-23 2005-07-27 Награид Са Электронная этикетка (варианты)
RU2290697C1 (ru) * 2005-05-20 2006-12-27 Вячеслав Адамович Заренков Устройство для маркировки
JP2009015683A (ja) * 2007-07-06 2009-01-22 Hst Kk 検出装置
RU2425422C2 (ru) * 2008-05-08 2011-07-27 Тютерев Анатолий Евгеньевич Противокражная система для выставленных в открытом доступе товаров (варианты)
CN107437315B (zh) * 2016-05-27 2023-03-28 成都华立安安防科技有限公司 一种生物感应不干胶纸报警器及其使用方法
WO2020236661A1 (en) 2019-05-17 2020-11-26 Invensense, Inc. A pressure sensor with improve hermeticity

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3745450A (en) * 1971-10-27 1973-07-10 Teledyne Ind Metal detection system for indicating the motion and direction of motion of a body having magnetic properties
US4249167A (en) * 1979-06-05 1981-02-03 Magnavox Government And Industrial Electronics Company Apparatus and method for theft detection system having different frequencies
US4333072A (en) * 1979-08-06 1982-06-01 International Identification Incorporated Identification device
US4476459A (en) * 1981-10-23 1984-10-09 Knogo Corporation Theft detection method and apparatus in which the decay of a resonant circuit is detected
EP0153286B1 (en) * 1984-02-15 1990-06-13 Esselte Meto Eas International Ab Method and system for detecting an indicating device
US4670740A (en) * 1985-11-04 1987-06-02 Security Tag Systems, Inc. Portable, batteryless, frequency divider consisting of inductor and diode
JPS6337279A (ja) * 1986-08-01 1988-02-17 Wako Sangyo:Kk 物品の移動検知システム
GB8810872D0 (en) * 1988-05-07 1988-06-08 Transalarm Ltd Security system
US5171228A (en) * 1989-07-25 1992-12-15 Medtronic, Inc. Apparatus for medical instrument placement verification
ES2100934T3 (es) * 1990-08-03 1997-07-01 Sensormatic Electronics Corp Etiqueta de division de frecuencia teniendo un circuito biresonante acoplado magneticamente.
US5266926A (en) * 1991-05-31 1993-11-30 Avid Marketing, Inc. Signal transmission and tag power consumption measurement circuit for an inductive reader
US5241298A (en) * 1992-03-18 1993-08-31 Security Tag Systems, Inc. Electrically-and-magnetically-coupled, batteryless, portable, frequency divider

Also Published As

Publication number Publication date
TW400508B (en) 2000-08-01
AU1722895A (en) 1995-08-21
PL175930B1 (pl) 1999-03-31
SE9400396L (sv) 1995-08-08
SE9400396D0 (sv) 1994-02-07
JPH09508485A (ja) 1997-08-26
US5751213A (en) 1998-05-12
PL315631A1 (en) 1996-11-25
CN1140504A (zh) 1997-01-15
CA2181344A1 (en) 1995-08-10
DE69513505T2 (de) 2000-03-16
WO1995021431A1 (en) 1995-08-10
RU2138855C1 (ru) 1999-09-27
DE69513505D1 (de) 1999-12-30
ZA95964B (en) 1996-02-07
CA2181344C (en) 2000-11-28
SE508322C2 (sv) 1998-09-28
EP0744064B1 (en) 1999-11-24
BR9506863A (pt) 1997-08-19
DK0744064T3 (da) 2000-04-03
EP0744064A1 (en) 1996-11-27
ATE187006T1 (de) 1999-12-15

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Legal Events

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Effective date: 19961111

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