CA1229142A - Sonde pour detecteur a double vitesse de propagation sur cables temoins d'effraction - Google Patents

Sonde pour detecteur a double vitesse de propagation sur cables temoins d'effraction

Info

Publication number
CA1229142A
CA1229142A CA000464373A CA464373A CA1229142A CA 1229142 A CA1229142 A CA 1229142A CA 000464373 A CA000464373 A CA 000464373A CA 464373 A CA464373 A CA 464373A CA 1229142 A CA1229142 A CA 1229142A
Authority
CA
Canada
Prior art keywords
cables
transmitter
receiver
sensor
field
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
CA000464373A
Other languages
English (en)
Inventor
R. Keith Harman
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.)
Senstar Corp
Original Assignee
Senstar Stellar Corp
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 Senstar Stellar Corp filed Critical Senstar Stellar Corp
Priority to CA000464373A priority Critical patent/CA1229142A/fr
Application granted granted Critical
Publication of CA1229142A publication Critical patent/CA1229142A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G08B13/2497—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field using transmission lines, e.g. cable

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)
CA000464373A 1984-09-28 1984-09-28 Sonde pour detecteur a double vitesse de propagation sur cables temoins d'effraction Expired CA1229142A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000464373A CA1229142A (fr) 1984-09-28 1984-09-28 Sonde pour detecteur a double vitesse de propagation sur cables temoins d'effraction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000464373A CA1229142A (fr) 1984-09-28 1984-09-28 Sonde pour detecteur a double vitesse de propagation sur cables temoins d'effraction

Publications (1)

Publication Number Publication Date
CA1229142A true CA1229142A (fr) 1987-11-10

Family

ID=4128809

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000464373A Expired CA1229142A (fr) 1984-09-28 1984-09-28 Sonde pour detecteur a double vitesse de propagation sur cables temoins d'effraction

Country Status (1)

Country Link
CA (1) CA1229142A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107437317A (zh) * 2016-05-27 2017-12-05 孙建华 一种生物感应安全贴及其使用方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107437317A (zh) * 2016-05-27 2017-12-05 孙建华 一种生物感应安全贴及其使用方法
CN107437317B (zh) * 2016-05-27 2022-11-25 成都华立安安防科技有限公司 一种生物感应安全贴及其使用方法

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Legal Events

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