GB1342552A - Intruder detection systems - Google Patents

Intruder detection systems

Info

Publication number
GB1342552A
GB1342552A GB915272A GB915272A GB1342552A GB 1342552 A GB1342552 A GB 1342552A GB 915272 A GB915272 A GB 915272A GB 915272 A GB915272 A GB 915272A GB 1342552 A GB1342552 A GB 1342552A
Authority
GB
United Kingdom
Prior art keywords
detector
gate
change
alarm
photo
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
GB915272A
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.)
Pyrotector Inc
Original Assignee
Pyrotector Inc
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 Pyrotector Inc filed Critical Pyrotector Inc
Publication of GB1342552A publication Critical patent/GB1342552A/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
    • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
    • 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 OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • 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
    • G08B13/2491—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field
    • G08B13/2494—Intrusion detection systems, i.e. where the body of an intruder causes the interference with the electromagnetic field by interference with electro-magnetic field distribution combined with other electrical sensor means, e.g. microwave detectors combined with other sensor means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

1342552 Intruder alarms PYROTECTOR Inc 28 Feb 1972 [5 April 1971] 9152/72 Heading G4N An intruder alarm comprises a first detector responsive to a change in frequency between a transmitted signal and a received signal, a second detector responsive to change in light intensity and means to actuate an alarm in response to signals from both detectors. The first detector may be an acoustic Doppler system operating on 40 kHz which after integration of the Doppler signal feeds an AND gate. The second detector may be photo-resistive or photo-generative and provides an output to the AND gate only following a rate of change of light above a certain value. Exit and entrance delays are included between the AND gate and the alarm to permit authorized setting and resetting. Reference has been directed by the Comptroller to Specification 964,752.
GB915272A 1971-04-05 1972-02-28 Intruder detection systems Expired GB1342552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13122271A 1971-04-05 1971-04-05

Publications (1)

Publication Number Publication Date
GB1342552A true GB1342552A (en) 1974-01-03

Family

ID=22448478

Family Applications (1)

Application Number Title Priority Date Filing Date
GB915272A Expired GB1342552A (en) 1971-04-05 1972-02-28 Intruder detection systems

Country Status (8)

Country Link
US (1) US3725888A (en)
AU (1) AU462611B2 (en)
BE (1) BE781069A (en)
CH (1) CH563043A5 (en)
DE (1) DE2216236B2 (en)
FR (1) FR2131997B1 (en)
GB (1) GB1342552A (en)
IT (1) IT950945B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150374A (en) * 1976-04-23 1979-04-17 Autosystems Limited Sensing device for use in poultry processing
GB2122004A (en) * 1982-05-27 1984-01-04 Spectronix Ltd Apparatus for detection of incoming objects
US4765244A (en) * 1983-04-15 1988-08-23 Spectronix Ltd. Apparatus for the detection and destruction of incoming objects

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801978A (en) * 1972-07-20 1974-04-02 E Systems Inc Ultrasonic-microwave doppler intrusion alarm system
DE2237613C3 (en) * 1972-07-31 1975-05-28 Faser-Und Kunststoff-Presswerk Romen Kg, 8450 Amberg Method and device for securing space
US3866198A (en) * 1973-10-17 1975-02-11 Leopold Cohen Ultrasonic intrusion detection systems employing turbulence discrimination
DK135353B (en) * 1974-11-07 1977-04-12 Schloeer Boerge Plants for detecting moving objects within a monitored area by microwave diffraction.
US3922660A (en) * 1974-12-12 1975-11-25 American District Telegraph Co Volumetric intrusion alarm using both Doppler and net-change signal processing
GB1548771A (en) * 1976-11-05 1979-07-18 Spirig Ernst Intruder alarm systems
US4141091A (en) * 1976-12-10 1979-02-27 Pulvari Charles F Automated flush system
FR2433797A1 (en) * 1978-08-17 1980-03-14 Fichet Bauche Electronic surveillance installation for strong room - monitors absence of noise and presence of light for given time period
DE3001452A1 (en) * 1980-01-16 1981-07-23 Hans-Günther 8100 Garmisch-Partenkirchen Stadelmayr ALARM, SECURING AND MONITORING SYSTEM
US4331952A (en) * 1980-09-22 1982-05-25 American District Telegraph Company Redundant sensor adapter
FR2527814A1 (en) * 1982-05-25 1983-12-02 Thomson Csf Intruder alarm less prone to false alarms - activated IR emissions and ultrasonic reflection pref. includes polymer etc. components
EP0147925A1 (en) * 1983-10-19 1985-07-10 C & K Systems, Inc. Combination infrared microwave intrusion detector
US4772875A (en) * 1986-05-16 1988-09-20 Denning Mobile Robotics, Inc. Intrusion detection system
US4710750A (en) * 1986-08-05 1987-12-01 C & K Systems, Inc. Fault detecting intrusion detection device
IT1195131B (en) * 1986-08-08 1988-10-12 Elkron Spa SURVEILLANCE DEVICE WITH INFRARED AND RADIO FREQUENCY SENSOR ELEMENTS
FR2611957B1 (en) * 1987-03-04 1994-06-03 Dreuilhe Jacqueline BIVOLUMETRIC DOPPLER MOTION DETECTOR RADAR
GB2217889B (en) * 1988-04-08 1992-09-23 Matsushita Electric Works Ltd Composite type crime preventive sensor
US4833450A (en) * 1988-04-15 1989-05-23 Napco Security Systems, Inc. Fault detection in combination intrusion detection systems
US4882567A (en) * 1988-09-29 1989-11-21 C & K Systems, Inc. Intrusion detection system and a method therefor
US4940967A (en) * 1989-08-31 1990-07-10 Burle Technologies, Inc. Balanced digital infrared detector circuit
CH680881A5 (en) * 1990-09-05 1992-11-30 Cerberus Ag
US5189393A (en) * 1991-06-07 1993-02-23 The Watt Stopper Inc. Dual technology motion sensor
CA2113026A1 (en) * 1993-01-28 1994-07-29 Paul Michael Hoseit Methods and apparatus for intrusion detection having improved immunity to false alarms
US5821642A (en) * 1996-11-04 1998-10-13 Hubbell Incorporated Arc prevention circuit for a mechanical switch
US6078253A (en) * 1997-02-04 2000-06-20 Mytech Corporation Occupancy sensor and method of operating same
US5986357A (en) * 1997-02-04 1999-11-16 Mytech Corporation Occupancy sensor and method of operating same
GB2370118B (en) 1999-05-07 2003-10-22 Honeywell Inc Glass-break detector and method of alarm discrimination
US7411489B1 (en) 1999-12-29 2008-08-12 Cooper Wiring Devices, Inc. Self-adjusting dual technology occupancy sensor system and method
US8148989B2 (en) * 2002-03-11 2012-04-03 Keith Kopp Ferromagnetic detection enhancer compatible with magnetic resonance
US7489128B2 (en) * 2002-03-11 2009-02-10 Kopp Keith A MRI protector
US7194209B1 (en) * 2002-09-04 2007-03-20 Xantech Corporation Interference resistant infrared extension system
GB2395276B (en) * 2002-11-12 2006-03-08 Qinetiq Ltd Ferromagnetic object detector
US20050206515A1 (en) * 2004-03-22 2005-09-22 Alexander Pakhomov Systems for protection against intruders
GB2422970B (en) * 2005-02-02 2008-09-10 Pyronix Ltd Detection apparatus
US7680283B2 (en) * 2005-02-07 2010-03-16 Honeywell International Inc. Method and system for detecting a predetermined sound event such as the sound of breaking glass
ATE428155T1 (en) * 2005-03-10 2009-04-15 Pyronix Ltd DETECTOR AND OPTICAL SYSTEM
US7486193B2 (en) * 2006-02-06 2009-02-03 Cooper Technologies Company Occupancy sensor network
US7777632B2 (en) * 2006-02-06 2010-08-17 Cooper Technologies Company Acoustic occupancy sensor
US20070183329A1 (en) * 2006-02-06 2007-08-09 Cooper Technologies Company Networking of switchpacks
US7541924B2 (en) 2006-02-06 2009-06-02 Cooper Technologies Company Infrared occupancy sensor
DE102006056111A1 (en) * 2006-11-24 2008-05-29 S.M.S Smart Microwave Sensors Gmbh Method and radar arrangement for monitoring a surveillance area
US8063375B2 (en) * 2007-06-22 2011-11-22 Intel-Ge Care Innovations Llc Sensible motion detector
KR20180064951A (en) * 2016-12-06 2018-06-15 주식회사 비트센싱 Linear virtual fence system using radar and reflector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3010102A (en) * 1947-07-05 1961-11-21 Bell Telephone Labor Inc Combination radar and thermalenergy detection system
US3074053A (en) * 1960-03-01 1963-01-15 American District Telegraph Co Electrical system and method for protecting premises subject to varying ambient conditions
US3242486A (en) * 1962-04-20 1966-03-22 Johnson Service Co Intrusion detection system
US3564529A (en) * 1965-10-21 1971-02-16 Us Navy Electrostatic field rate detector
US3560950A (en) * 1967-03-02 1971-02-02 Duane Peters Warning signal for swinging doors
US3573817A (en) * 1968-02-28 1971-04-06 North American Rockwell Monitoring system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150374A (en) * 1976-04-23 1979-04-17 Autosystems Limited Sensing device for use in poultry processing
GB2122004A (en) * 1982-05-27 1984-01-04 Spectronix Ltd Apparatus for detection of incoming objects
US4765244A (en) * 1983-04-15 1988-08-23 Spectronix Ltd. Apparatus for the detection and destruction of incoming objects

Also Published As

Publication number Publication date
IT950945B (en) 1973-06-20
FR2131997A1 (en) 1972-11-17
AU3912572A (en) 1973-08-23
AU462611B2 (en) 1975-06-06
DE2216236B2 (en) 1977-12-29
FR2131997B1 (en) 1977-07-15
CH563043A5 (en) 1975-06-13
BE781069A (en) 1972-07-17
US3725888A (en) 1973-04-03
DE2216236A1 (en) 1972-10-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee