CA2127780A1 - Method of Analyzing Signal Quality - Google Patents

Method of Analyzing Signal Quality

Info

Publication number
CA2127780A1
CA2127780A1 CA2127780A CA2127780A CA2127780A1 CA 2127780 A1 CA2127780 A1 CA 2127780A1 CA 2127780 A CA2127780 A CA 2127780A CA 2127780 A CA2127780 A CA 2127780A CA 2127780 A1 CA2127780 A1 CA 2127780A1
Authority
CA
Canada
Prior art keywords
signal
trouble
sample period
actual
conditions
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
CA2127780A
Other languages
French (fr)
Other versions
CA2127780C (en
Inventor
Dennis Cecic
Hartwell Fong
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
Publication of CA2127780A1 publication Critical patent/CA2127780A1/en
Application granted granted Critical
Publication of CA2127780C publication Critical patent/CA2127780C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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

Abstract

A motion detecting system is disclosed where the signal from the transducer is analysed in a manner to distinguish between actual motion indicative of an intruder, typical noise expected for the area under supervision and the transducer and a signal which indicates a trouble condition (circuit failure, masking, or other trouble condition having a known signal signature). The system samples the signal to provide a simplified representation of the actual signal. The results of the sampling process for a given sample period allows good assessment of the actual conditions of the supervised area.
In a preferred embodiment a host of experiment segments are compared within the sample period for change therebetween with the amount of change accumulated for the sample period. This measure of change particularly at different magnitude levels provides a reliable basis for assessing alarm and trouble conditions. This approach can also be combined with other approaches for recognizing trouble conditions and only producing a trouble output signal based on a combined analysis of the outputs of the various approaches.
CA002127780A 1993-07-22 1994-07-11 Method of analyzing signal quality Expired - Lifetime CA2127780C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/095,028 US5504473A (en) 1993-07-22 1993-07-22 Method of analyzing signal quality
US08/095,028 1993-07-22

Publications (2)

Publication Number Publication Date
CA2127780A1 true CA2127780A1 (en) 1995-01-23
CA2127780C CA2127780C (en) 1999-04-13

Family

ID=22248775

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002127780A Expired - Lifetime CA2127780C (en) 1993-07-22 1994-07-11 Method of analyzing signal quality

Country Status (2)

Country Link
US (1) US5504473A (en)
CA (1) CA2127780C (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6013794A (en) * 1993-11-19 1995-06-06 Dow Chemical Company, The Transmitter freeze/fault detection
US5774322A (en) * 1995-02-02 1998-06-30 Hubbell Incorporated Three wire power supply circuit
US5675320A (en) * 1995-09-01 1997-10-07 Digital Security Controls Ltd. Glass break detector
GB9618697D0 (en) * 1996-09-06 1996-10-16 Digi Media Vision Ltd Method and apparatus to detect the presence of noise
US5986357A (en) 1997-02-04 1999-11-16 Mytech Corporation Occupancy sensor and method of operating same
US6078253A (en) * 1997-02-04 2000-06-20 Mytech Corporation Occupancy sensor and method of operating same
US5870022A (en) * 1997-09-30 1999-02-09 Interactive Technologies, Inc. Passive infrared detection system and method with adaptive threshold and adaptive sampling
US6759954B1 (en) 1997-10-15 2004-07-06 Hubbell Incorporated Multi-dimensional vector-based occupancy sensor and method of operating same
US6298144B1 (en) * 1998-05-20 2001-10-02 The United States Of America As Represented By The National Security Agency Device for and method of detecting motion in an image
US6107919A (en) * 1999-02-24 2000-08-22 Arch Development Corporation Dual sensitivity mode system for monitoring processes and sensors
US6307200B1 (en) 1999-03-10 2001-10-23 Interactive Technologies, Inc. Passive infrared sensor apparatus and method with DC offset compensation
EP1061489B1 (en) * 1999-06-07 2004-08-25 Siemens Building Technologies AG Intrusion detector with a device for monitoring against tampering
US6188318B1 (en) 1999-06-29 2001-02-13 Pittway Corp. Dual-technology intrusion detector with pet immunity
DE10016688C2 (en) * 2000-04-04 2003-12-24 Deutsch Zentr Luft & Raumfahrt Process for the detection of animals and / or nesting of breeders in their natural habitat and devices for carrying out the process
GB2383486B (en) * 2001-12-19 2005-02-16 Microwave Solutions Ltd Detector device
CN100504941C (en) * 2002-05-12 2009-06-24 理斯科有限公司 Dual sensor intruder alarm
AU2003256724A1 (en) * 2002-07-26 2004-02-16 Motorola, Inc. Method for fast dynamic estimation of background noise
DE10301146B4 (en) * 2003-01-14 2014-07-10 Robert Bosch Gmbh A security system
US7880603B2 (en) * 2006-10-09 2011-02-01 Robert Bosch Gmbh System and method for controlling an anti-masking system
US7671739B2 (en) * 2007-03-07 2010-03-02 Robert Bosch Gmbh System and method for implementing ranging microwave for detector range reduction
DE102009011679A1 (en) * 2009-02-23 2010-08-26 Pilz Gmbh & Co. Kg Method and device for creating a user program for a safety control
FR2944640A1 (en) * 2009-04-17 2010-10-22 France Telecom METHOD AND DEVICE FOR OBJECTIVE EVALUATION OF THE VOICE QUALITY OF A SPEECH SIGNAL TAKING INTO ACCOUNT THE CLASSIFICATION OF THE BACKGROUND NOISE CONTAINED IN THE SIGNAL.
KR101865368B1 (en) * 2012-01-06 2018-06-07 한국전자통신연구원 Apparatus and method for processing sensor signal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754282A (en) * 1970-03-25 1988-06-28 The United States Of America As Represented By The Secretary Of The Navy Improved data analysis system
US4031364A (en) * 1975-11-10 1977-06-21 Hughes Aircraft Company Multiple moment video detector
US4660024A (en) * 1985-12-16 1987-04-21 Detection Systems Inc. Dual technology intruder detection system
GB2217889B (en) * 1988-04-08 1992-09-23 Matsushita Electric Works Ltd Composite type crime preventive sensor
US5043705A (en) * 1989-11-13 1991-08-27 Elkana Rooz Method and system for detecting a motionless body in a pool
US5276427A (en) * 1991-07-08 1994-01-04 Digital Security Controls Ltd. Auto-adjust motion detection system
US5317620A (en) * 1992-04-02 1994-05-31 Orca Technology, Inc. Infrared alarm system
US5309147A (en) * 1992-05-21 1994-05-03 Intelectron Products Company Motion detector with improved signal discrimination

Also Published As

Publication number Publication date
CA2127780C (en) 1999-04-13
US5504473A (en) 1996-04-02

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Effective date: 20140711