GB1308702A - Intrusion detection apparatus having supervisory control means - Google Patents

Intrusion detection apparatus having supervisory control means

Info

Publication number
GB1308702A
GB1308702A GB1153070A GB1153070A GB1308702A GB 1308702 A GB1308702 A GB 1308702A GB 1153070 A GB1153070 A GB 1153070A GB 1153070 A GB1153070 A GB 1153070A GB 1308702 A GB1308702 A GB 1308702A
Authority
GB
United Kingdom
Prior art keywords
alarm
transistor
supervisory signal
area
receiver
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
GB1153070A
Other languages
English (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.)
Johnson Service Co
Original Assignee
Johnson Service Co
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 Johnson Service Co filed Critical Johnson Service Co
Publication of GB1308702A publication Critical patent/GB1308702A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/50—Systems of measurement based on relative movement of target
    • G01S13/52—Discriminating between fixed and moving objects or between objects moving at different speeds
    • G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Burglar Alarm Systems (AREA)
GB1153070A 1969-03-10 1970-03-10 Intrusion detection apparatus having supervisory control means Expired GB1308702A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80559169A 1969-03-10 1969-03-10

Publications (1)

Publication Number Publication Date
GB1308702A true GB1308702A (en) 1973-03-07

Family

ID=25191983

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1153070A Expired GB1308702A (en) 1969-03-10 1970-03-10 Intrusion detection apparatus having supervisory control means

Country Status (5)

Country Link
US (1) US3697989A (https=)
CA (1) CA921147A (https=)
DE (1) DE2011288A1 (https=)
FR (1) FR2037881A5 (https=)
GB (1) GB1308702A (https=)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793617A (en) * 1972-06-26 1974-02-19 Klaas B Ultrasonic area surveillance system
US3932871A (en) * 1972-09-11 1976-01-13 Sperry Rand Corporation FM/CW surveillance radar system with range gating
DE2256926C3 (de) * 1972-11-21 1981-11-05 Schomandl KG, 8000 München Raumüberwachungseinrichtung
US4035798A (en) * 1974-03-27 1977-07-12 Pittway Corporation Ultrasonic intrusion detection system
US3932870A (en) * 1974-05-31 1976-01-13 American District Telegraph Company On-line test circuit for intrusion alarm systems
US4088989A (en) * 1975-12-08 1978-05-09 Gulf & Western Manufacturing Company Intrusion detection apparatus
US4117464A (en) * 1976-11-11 1978-09-26 Solfan Systems, Inc. Microwave motion-detection apparatus employing a gunn oscillator in a self-detecting mode
US4682153A (en) * 1985-10-23 1987-07-21 Amerace Corporation Fail-safe sensor system
US20060017607A1 (en) * 2004-07-26 2006-01-26 Kyocera Corporation Amplitude modulator, selector switch, high frequency transmitting/receiving apparatus including the same, and radar apparatus, and radar apparatus-mounting vehicle and radar apparatus-mounting small ship

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779936A (en) * 1955-03-21 1957-01-29 Holmes Electric Protective Com Supervisory unit for burglar alarm system
US3242486A (en) * 1962-04-20 1966-03-22 Johnson Service Co Intrusion detection system
US3378834A (en) * 1966-05-10 1968-04-16 Johnson Service Co Perimeter intrusion detection system
US3383678A (en) * 1966-12-23 1968-05-14 Advanced Devices Lab Inc Moving object detection system

Also Published As

Publication number Publication date
FR2037881A5 (https=) 1970-12-31
CA921147A (en) 1973-02-13
US3697989A (en) 1972-10-10
DE2011288A1 (de) 1970-09-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee