EP1098282A2 - Sensorsysteme - Google Patents

Sensorsysteme Download PDF

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Publication number
EP1098282A2
EP1098282A2 EP00309852A EP00309852A EP1098282A2 EP 1098282 A2 EP1098282 A2 EP 1098282A2 EP 00309852 A EP00309852 A EP 00309852A EP 00309852 A EP00309852 A EP 00309852A EP 1098282 A2 EP1098282 A2 EP 1098282A2
Authority
EP
European Patent Office
Prior art keywords
item
plate
sensor system
disc
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.)
Withdrawn
Application number
EP00309852A
Other languages
English (en)
French (fr)
Other versions
EP1098282A3 (de
Inventor
Philip Elphee Williams
Peter John Jones
Peter Jonathan Hutcheson
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.)
Dc Drives (patents) Ltd
Staplethorne Ltd
Original Assignee
Dc Drives (patents) Ltd
Staplethorne Ltd
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 Dc Drives (patents) Ltd, Staplethorne Ltd filed Critical Dc Drives (patents) Ltd
Publication of EP1098282A2 publication Critical patent/EP1098282A2/de
Publication of EP1098282A3 publication Critical patent/EP1098282A3/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/14—Mechanical actuation by lifting or attempted removal of hand-portable articles

Definitions

  • the sensor system shown in Figures 3, 3A and 4 is thus based on pre-stressing the piezoceramic element 22 and it is the relief of this stress (or an increase in the stress) that generates a sufficiently large output signal to the electronic control circuit 15.
  • the effects of vibration and wind-induced movement are filtered out by the electronic control circuit 15 (as described below) to avoid false alarms.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
EP00309852A 1999-11-06 2000-11-06 Sensorsysteme Withdrawn EP1098282A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9926208.1A GB9926208D0 (en) 1999-11-06 1999-11-06 Sensor systems
GB9926208 1999-11-06

Publications (2)

Publication Number Publication Date
EP1098282A2 true EP1098282A2 (de) 2001-05-09
EP1098282A3 EP1098282A3 (de) 2002-06-19

Family

ID=10863999

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00309852A Withdrawn EP1098282A3 (de) 1999-11-06 2000-11-06 Sensorsysteme

Country Status (2)

Country Link
EP (1) EP1098282A3 (de)
GB (2) GB9926208D0 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2515090A (en) 2013-06-13 2014-12-17 Xtra Sense Ltd A cabinet alarm system and method
DE202014106128U1 (de) 2014-12-17 2015-02-02 Xtra-Sense Ltd. Schrankalarmsystem

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH481434A (de) * 1968-07-03 1969-11-15 Cerberus Ag Werk Fuer Elektron Elektrische Vorrichtung zum Schutz an einer Wand oder Raumdecke aufgehängter oder auf einem Sockel oder in einer Vitrine aufgestellter beweglicher Gegenstände gegen Diebstahl oder Beschädigung
GB2197516B (en) * 1986-11-15 1990-10-03 John Bryan Clough Security device
GB8927313D0 (en) * 1989-12-02 1990-01-31 Weyrad Electronics Ltd Improvements relating to alarm systems
RU2006948C1 (ru) * 1991-02-15 1994-01-30 Рапохин Евгений Иванович Датчик охранной сигнализации
US5258743A (en) * 1991-07-29 1993-11-02 Uniplex Corporation Piezoelectric motion sensor
US5801475A (en) * 1993-09-30 1998-09-01 Mitsuteru Kimura Piezo-electricity generation device

Also Published As

Publication number Publication date
GB2360119B (en) 2004-03-24
GB9926208D0 (en) 2000-01-12
GB0026977D0 (en) 2000-12-20
GB2360119A (en) 2001-09-12
EP1098282A3 (de) 2002-06-19

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