GB2040093B - Instrusion detector - Google Patents

Instrusion detector

Info

Publication number
GB2040093B
GB2040093B GB7942261A GB7942261A GB2040093B GB 2040093 B GB2040093 B GB 2040093B GB 7942261 A GB7942261 A GB 7942261A GB 7942261 A GB7942261 A GB 7942261A GB 2040093 B GB2040093 B GB 2040093B
Authority
GB
United Kingdom
Prior art keywords
instrusion
detector
instrusion detector
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
Application number
GB7942261A
Other versions
GB2040093A (en
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.)
Shorrock Developments Ltd
Original Assignee
Shorrock Developments 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 Shorrock Developments Ltd filed Critical Shorrock Developments Ltd
Priority to GB7942261A priority Critical patent/GB2040093B/en
Publication of GB2040093A publication Critical patent/GB2040093A/en
Application granted granted Critical
Publication of GB2040093B publication Critical patent/GB2040093B/en
Expired 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
    • G08B13/26—Electrical actuation by proximity of an intruder causing variation in capacitance or inductance of a circuit

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
GB7942261A 1979-01-27 1979-12-07 Instrusion detector Expired GB2040093B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7942261A GB2040093B (en) 1979-01-27 1979-12-07 Instrusion detector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7902960 1979-01-27
GB7942261A GB2040093B (en) 1979-01-27 1979-12-07 Instrusion detector

Publications (2)

Publication Number Publication Date
GB2040093A GB2040093A (en) 1980-08-20
GB2040093B true GB2040093B (en) 1983-06-15

Family

ID=26270366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7942261A Expired GB2040093B (en) 1979-01-27 1979-12-07 Instrusion detector

Country Status (1)

Country Link
GB (1) GB2040093B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL62589A (en) * 1981-04-05 1988-02-29 Israel Aircraft Ind Ltd Electromagnetic field perimeter detection apparatus
US4579317A (en) * 1982-02-18 1986-04-01 Siemens Aktiengesellschaft Electrode arrangement for capacitive guard fences
GB2137789A (en) * 1983-03-30 1984-10-10 Terrance Michael Hayes Intrusion detector installation
GB2154037B (en) * 1984-02-01 1987-06-10 Thorn Emi Ferguson Alarm unit
GB2155224B (en) * 1984-03-02 1987-11-18 Shorrock Security Systems Ltd Intrusion detection barrier
FR2606162B1 (en) * 1986-11-05 1989-02-03 Bertin & Cie PROXIMITY SENSOR AND ITS APPLICATION TO REMOTE SENSING
GB2259174A (en) * 1991-09-02 1993-03-03 Shorrock Ltd An intruder detector
CN106934976B (en) * 2015-12-30 2019-08-16 绵阳市家家安房物联网科技有限公司 A kind of biological response warning device and its application method
CN106934975B (en) * 2015-12-30 2019-08-16 绵阳市家家安房物联网科技有限公司 A kind of induction type detector and its detection method
CN106934972B (en) * 2015-12-30 2019-07-12 王莉 A kind of induction system and biological response alarm method of biological response warning device
CN106934974B (en) * 2015-12-30 2019-07-12 王莉 A kind of excitation system and biological response alarm method of biological response warning device

Also Published As

Publication number Publication date
GB2040093A (en) 1980-08-20

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19951207