CA2300463A1 - Combination microwave passive infrared motion detector with anti-masking evaluation - Google Patents

Combination microwave passive infrared motion detector with anti-masking evaluation Download PDF

Info

Publication number
CA2300463A1
CA2300463A1 CA 2300463 CA2300463A CA2300463A1 CA 2300463 A1 CA2300463 A1 CA 2300463A1 CA 2300463 CA2300463 CA 2300463 CA 2300463 A CA2300463 A CA 2300463A CA 2300463 A1 CA2300463 A1 CA 2300463A1
Authority
CA
Canada
Prior art keywords
motion detector
passive infrared
masking
infrared motion
masking evaluation
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.)
Granted
Application number
CA 2300463
Other languages
French (fr)
Other versions
CA2300463C (en
Inventor
Jake Choy
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.)
Tyco Safety Products Canada Ltd
Original Assignee
Digital Security Controls 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 Digital Security Controls Ltd filed Critical Digital Security Controls Ltd
Priority to CA 2300463 priority Critical patent/CA2300463C/en
Publication of CA2300463A1 publication Critical patent/CA2300463A1/en
Application granted granted Critical
Publication of CA2300463C publication Critical patent/CA2300463C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/184—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using radiation reflectors
    • 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
    • G08B13/19—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 using infrared-radiation detection systems
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/02—Monitoring continuously signalling or alarm systems
    • G08B29/04—Monitoring of the detection circuits
    • G08B29/046—Monitoring of the detection circuits prevention of tampering with detection circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/183—Single detectors using dual technologies

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

A motion detector of an alarm system has a microwave sensor and a passive infrared sensor, and includes signal processing logic for initiating an anti-masking evaluation upon detection of certain conditions. The detector then samples the sensor signals and compares the signals to a series of possible outcomes. Some of the possible outcomes represent masking conditions, while others represent normal conditions. A match with masking conditions results in an alarm signal being generated.
CA 2300463 2000-03-10 2000-03-10 Combination microwave passive infrared motion detector with anti-masking evaluation Expired - Fee Related CA2300463C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2300463 CA2300463C (en) 2000-03-10 2000-03-10 Combination microwave passive infrared motion detector with anti-masking evaluation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2300463 CA2300463C (en) 2000-03-10 2000-03-10 Combination microwave passive infrared motion detector with anti-masking evaluation

Publications (2)

Publication Number Publication Date
CA2300463A1 true CA2300463A1 (en) 2001-09-10
CA2300463C CA2300463C (en) 2009-02-24

Family

ID=4165484

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2300463 Expired - Fee Related CA2300463C (en) 2000-03-10 2000-03-10 Combination microwave passive infrared motion detector with anti-masking evaluation

Country Status (1)

Country Link
CA (1) CA2300463C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2187293A1 (en) * 2001-10-25 2003-05-16 S D P Sist S De Proteccion S L Security device and intrusion alarm system
DE102006008513A1 (en) * 2006-02-23 2007-09-06 Agtatec Ag Sensor-monitoring device for motor driven wing of automatic door, has evaluation circuit provided for control and/or evaluation of detection signal, and sensors with overlapping area with reference to monitoring area
CN104318693A (en) * 2014-10-17 2015-01-28 无锡港湾网络科技有限公司 Indoor monitoring system based on infrared and microwave detectors
WO2016109357A1 (en) * 2014-12-30 2016-07-07 Google Inc. Blocked sensor detection and notification

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI480836B (en) * 2012-10-17 2015-04-11 Ind Tech Res Inst Mocrowave motion sensor
US9448053B2 (en) 2010-09-20 2016-09-20 Industrial Technology Research Institute Microwave motion sensor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2187293A1 (en) * 2001-10-25 2003-05-16 S D P Sist S De Proteccion S L Security device and intrusion alarm system
DE102006008513A1 (en) * 2006-02-23 2007-09-06 Agtatec Ag Sensor-monitoring device for motor driven wing of automatic door, has evaluation circuit provided for control and/or evaluation of detection signal, and sensors with overlapping area with reference to monitoring area
CN104318693A (en) * 2014-10-17 2015-01-28 无锡港湾网络科技有限公司 Indoor monitoring system based on infrared and microwave detectors
WO2016109357A1 (en) * 2014-12-30 2016-07-07 Google Inc. Blocked sensor detection and notification
US10429177B2 (en) 2014-12-30 2019-10-01 Google Llc Blocked sensor detection and notification

Also Published As

Publication number Publication date
CA2300463C (en) 2009-02-24

Similar Documents

Publication Publication Date Title
AU4138889A (en) Intrusion detection system and a method therefor
CA2220813A1 (en) Passive infrared motion detector and method
MXPA03002077A (en) Integrated security system.
KR910013024A (en) Apparatus and method for monitoring electronic parts employing auxiliary sensors
AU6106099A (en) Rfid detection system
CA2130600A1 (en) Self-Sounding Tag Alarm
EP1164556A3 (en) Opto-electronic intruder alarm apparatus
WO1988000747A3 (en) Intrusion detection system
CA2639898A1 (en) Dual technology sensor device with range gated sensitivity
ES472658A1 (en) Alarm system
ES2163238T3 (en) DEVICE FOR MONITORING THE ACTIVITY OF A PERSON AND / OR FALL DETECTION.
EP1154387A3 (en) Thermopile far infrared radiation detection apparatus for crime prevention
WO2002082004A3 (en) Motion detection apparatus employing millimeter wave detector
AU2001240963A1 (en) Detecting the presence of a vehicle with a particular vehicle registration number
CA2298744A1 (en) Multi-station dangerous condition alarm system incorporating alarm and chirp origination feature
US5793286A (en) Combined infrasonic and infrared intrusion detection system
US4963749A (en) Quad element intrusion detection
IT1245405B (en) ANTI-INTRUSION DEVICE
CA2300463A1 (en) Combination microwave passive infrared motion detector with anti-masking evaluation
CA2135929A1 (en) Motion Detector with Improved Signal Discrimination
CA2099971A1 (en) Detection Signal Evaluation at Varying Signal Levels
EP0375270A3 (en) Radiation detection arrangements and methods
EP0240456A3 (en) Perimeter surveillance system
DE69509513D1 (en) EVENT DETECTING DEVICE FOR FAULT MONITORING
EP1406223A4 (en) Antitheft system

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170310