SE508322C2 - Larmelement - Google Patents

Larmelement

Info

Publication number
SE508322C2
SE508322C2 SE9400396A SE9400396A SE508322C2 SE 508322 C2 SE508322 C2 SE 508322C2 SE 9400396 A SE9400396 A SE 9400396A SE 9400396 A SE9400396 A SE 9400396A SE 508322 C2 SE508322 C2 SE 508322C2
Authority
SE
Sweden
Prior art keywords
frequency
alarm
alarm element
diode
capacitance
Prior art date
Application number
SE9400396A
Other languages
English (en)
Swedish (sv)
Other versions
SE9400396D0 (sv
SE9400396L (sv
Inventor
Leif Aasbrink
Original Assignee
Leif Aasbrink
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 Leif Aasbrink filed Critical Leif Aasbrink
Priority to SE9400396A priority Critical patent/SE508322C2/sv
Publication of SE9400396D0 publication Critical patent/SE9400396D0/xx
Priority to AU17228/95A priority patent/AU1722895A/en
Priority to BR9506863A priority patent/BR9506863A/pt
Priority to DE69513505T priority patent/DE69513505T2/de
Priority to CA002181344A priority patent/CA2181344C/en
Priority to AT95909177T priority patent/ATE187006T1/de
Priority to PL95315631A priority patent/PL175930B1/pl
Priority to PCT/SE1995/000100 priority patent/WO1995021431A1/en
Priority to DK95909177T priority patent/DK0744064T3/da
Priority to US08/676,219 priority patent/US5751213A/en
Priority to JP7520548A priority patent/JPH09508485A/ja
Priority to ES95909177T priority patent/ES2139193T3/es
Priority to EP95909177A priority patent/EP0744064B1/en
Priority to RU96118133A priority patent/RU2138855C1/ru
Priority to CN95191506A priority patent/CN1140504A/zh
Priority to TW084101014A priority patent/TW400508B/zh
Priority to ZA95964A priority patent/ZA95964B/xx
Publication of SE9400396L publication Critical patent/SE9400396L/xx
Publication of SE508322C2 publication Critical patent/SE508322C2/sv

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)
SE9400396A 1994-02-07 1994-02-07 Larmelement SE508322C2 (sv)

Priority Applications (17)

Application Number Priority Date Filing Date Title
SE9400396A SE508322C2 (sv) 1994-02-07 1994-02-07 Larmelement
CN95191506A CN1140504A (zh) 1994-02-07 1995-02-02 一种报警元件
DK95909177T DK0744064T3 (da) 1994-02-07 1995-02-02 Alarmelement
JP7520548A JPH09508485A (ja) 1994-02-07 1995-02-02 警報素子
DE69513505T DE69513505T2 (de) 1994-02-07 1995-02-02 Alarmelement
CA002181344A CA2181344C (en) 1994-02-07 1995-02-02 An alarm element
AT95909177T ATE187006T1 (de) 1994-02-07 1995-02-02 Alarmelement
PL95315631A PL175930B1 (pl) 1994-02-07 1995-02-02 Element alarmowy
PCT/SE1995/000100 WO1995021431A1 (en) 1994-02-07 1995-02-02 An alarm element
AU17228/95A AU1722895A (en) 1994-02-07 1995-02-02 An alarm element
US08/676,219 US5751213A (en) 1994-02-07 1995-02-02 Theft detection alarm element for avoiding false alarms
BR9506863A BR9506863A (pt) 1994-02-07 1995-02-02 Elemento de alarme
ES95909177T ES2139193T3 (es) 1994-02-07 1995-02-02 Un elemento de alarma.
EP95909177A EP0744064B1 (en) 1994-02-07 1995-02-02 An alarm element
RU96118133A RU2138855C1 (ru) 1994-02-07 1995-02-02 Элемент сигнализации
TW084101014A TW400508B (en) 1994-02-07 1995-02-06 An alarm element
ZA95964A ZA95964B (en) 1994-02-07 1995-02-07 An alarm element

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
SE9400396D0 SE9400396D0 (sv) 1994-02-07
SE9400396L SE9400396L (sv) 1995-08-08
SE508322C2 true SE508322C2 (sv) 1998-09-28

Family

ID=20392835

Family Applications (1)

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

Country Status (17)

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

Families Citing this family (4)

* 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
JP2009015683A (ja) * 2007-07-06 2009-01-22 Hst Kk 検出装置
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
US11326972B2 (en) 2019-05-17 2022-05-10 Invensense, Inc. Pressure sensor with improve hermeticity

Family Cites Families (11)

* 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
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
ATE152848T1 (de) * 1990-08-03 1997-05-15 Sensormatic Electronics Corp Magnetischgekoppelte, zweiresonanz-schaltung, frequenz-teilungsetikett
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
DE69513505T2 (de) 2000-03-16
ES2139193T3 (es) 2000-02-01
EP0744064A1 (en) 1996-11-27
PL315631A1 (en) 1996-11-25
TW400508B (en) 2000-08-01
AU1722895A (en) 1995-08-21
PL175930B1 (pl) 1999-03-31
RU2138855C1 (ru) 1999-09-27
CA2181344C (en) 2000-11-28
DE69513505D1 (de) 1999-12-30
ZA95964B (en) 1996-02-07
JPH09508485A (ja) 1997-08-26
SE9400396D0 (sv) 1994-02-07
WO1995021431A1 (en) 1995-08-10
DK0744064T3 (da) 2000-04-03
ATE187006T1 (de) 1999-12-15
EP0744064B1 (en) 1999-11-24
CA2181344A1 (en) 1995-08-10
US5751213A (en) 1998-05-12
BR9506863A (pt) 1997-08-19
CN1140504A (zh) 1997-01-15
SE9400396L (sv) 1995-08-08

Similar Documents

Publication Publication Date Title
EP0485552B1 (en) Periodic pulse discrimination system
US3863244A (en) Electronic security system having improved noise discrimination
US4356477A (en) FM/AM Electronic security system
CA1145015A (en) Surveillance systems
JPH0697476B2 (ja) 可変ラジオ周波数電子物品監視装置
EP0153286A2 (en) Method and system for detecting an indicating device
US3889250A (en) Active frequency-responsive glass breakage detector
EP0084400A2 (en) Detection system
SE457577B (sv) Apparat och saett foer detektering i en kontrollzon av en foersaeljningsvara
US4360905A (en) Intrusion alarm system for use with two-wire-cable
WO1986002186A1 (en) Identification system
US5371490A (en) System for electronic safeguarding against burglary using multiple transmitters and receivers
US5153562A (en) Method and apparatus for deactivating electromagnetic detection labels
EP0462641B1 (en) Radar apparatus with jamming indicator and receiver device with jamming indicator
SE508322C2 (sv) Larmelement
EP0148190B1 (en) A theft protection system particularly for shop areas
DK147169B (da) Elektronisk sikkerhedssystem med interferensdetektering
US5900816A (en) Anti-shoplifting security system utilizing a modulated transmitter signal
CN114008490A (zh) 开放式金属探测器
RU96118133A (ru) Элемент сигнализации
GB2050765A (en) Improvements In or Relating To Surveillance Systems
JPH02284294A (ja) 電子式盗難防止装置およびその運転方法
JPH0727799A (ja) 絶縁監視装置の信号伝達方式
SE440833B (sv) Forfarande och anordning for att detektera en indikeringsanordning i en begrensad undersokningszon

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 9400396-9

Format of ref document f/p: F