EP0402829A2 - Procédé et dispositif de détection d'intrus utilisant un détecteur de mouvement passif à infrarouge - Google Patents
Procédé et dispositif de détection d'intrus utilisant un détecteur de mouvement passif à infrarouge Download PDFInfo
- Publication number
- EP0402829A2 EP0402829A2 EP90111007A EP90111007A EP0402829A2 EP 0402829 A2 EP0402829 A2 EP 0402829A2 EP 90111007 A EP90111007 A EP 90111007A EP 90111007 A EP90111007 A EP 90111007A EP 0402829 A2 EP0402829 A2 EP 0402829A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat source
- sensor
- signals
- intruder
- sensor elements
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 17
- 239000013598 vector Substances 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 8
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 238000003491 array Methods 0.000 claims 1
- 238000009795 derivation Methods 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000013209 evaluation strategy Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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
- G08B13/193—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 using focusing 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
- G08B13/189—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
Definitions
- the invention relates to a method for detecting an intruder, which is a moving heat source, by means of a passive infrared motion detector with a sensor head which has a plurality of sensor elements, each of which detects a lobe-shaped area and emits a signal when the heat source enters, and an apparatus for performing this method.
- Passive infrared motion detectors or sensors are known per se; they generally have facet mirrors or facet lenses so that they can be used as motion detectors.
- the facet optic creates several narrow zones in the field of view of the sensor and maps them to a differential element that is sensitive to infrared radiation. If a heat source crosses one of the zones, a typical signal pattern results, with positive and negative signal pulses which are used for evaluation.
- these known infrared sensors which have a very different design, have certain disadvantages.
- the evaluation strategies for avoiding false alarms are usually based on the selection of certain signal patterns for triggering the alarm.
- EP-A-0 107 042 In order to reduce false alarms, it has already been proposed in EP-A-0 107 042 to provide two sensor elements.
- the current signal obtained from a first sensor element is continuously compared in a correlator with reference signals which are stored in a read-only memory and with the current signals obtained from a second sensor element monitoring the close range.
- the correlator emits an output signal which corresponds to the correlation of the two signals compared with one another.
- An alarm signal is triggered when the correlation exceeds a predetermined value and the amplitude reaches the threshold.
- the second sensor is here used for reference only. Spatial imaging is not possible with the known infrared detector. It is also not possible to determine the typical course of a measured value curve caused by an intruder.
- the object of the invention is to avoid the disadvantages mentioned above and to provide a method and a device which ensures precise spatial monitoring of the area to be protected and permits reliable alarming, false alarms and tampering being largely excluded.
- the area to be protected is monitored by two angle-selective passive infrared sensor heads with different locations.
- two pyrodectors can be used as angle-sensitive sensor heads, as are known from EP-A-0 245 842.
- a PVDF film with a row of sensor elements is attached in the focal plane of a spherical or spherical-parabolic mirror. This mirror optic assigns a corresponding lobe in the detection range to each individual sensor element, so that angle-selective detection of an infrared radiation source is possible.
- Such a heat source is aimed from two different directions and its location can be continuously determined by triangulation.
- the movement path of the heat source and thus the track of the intruder can be recorded in the common detection area of both sensor heads and a reliable alarm criterion for a movement detector can be derived from this movement path or track.
- false alarms such as can be caused, for example, by radiators switching on, air movement or solar radiation, are virtually excluded. Due to the spatial resolution is advantageously clearly recognized whether the intruder has actually traveled a certain distance in the surveillance area.
- a radial movement ie a movement directly towards one of the sensor heads, is also clearly identified, such as a small animal which cannot be detected and which is in the immediate vicinity of a sensor, is recognized as a non-intruder and does not give rise to an alarm.
- signals of different heights are generated in the individual sensor elements, which are separately amplified and digitized for each sensor element.
- the signals obtained in this way are expediently processed further in a microprocessor, a direction vector to the heat source being calculated for each sensor head by geometrically correct weighting of the individual digitized signals. From the intersection of two corresponding direction vectors, the current position of the heat source is continuously determined and from this the track that the intruder travels is formed. In this case, an alarm criterion is advantageously derived from the shape and length of the track and an alarm signal is emitted.
- the direction of movement or position of the intruder can also be displayed as additional information.
- a conventional facet detector is shown as a drawing in plan view.
- Such a detector is e.g. known from DE-OS 2 103 909.
- a new type of infrared sensor is shown schematically, which is designed as an angle-selective passive sensor head SK, an optical arrangement being used in which an array of electrically and thermally separated sensor elements SE lies in the focal plane of a spherical mirror KS, as it is is known from the above-mentioned European patent application 0 245 842.
- Each sensor element SE is assigned a club-shaped detection area KB by the mirror optics (KS).
- the geometry of the individual beam lobes KB is determined by the focal length of the spherical mirror KS and the number, shape and size of the selective zones.
- a sensor head SK1 has at least four sensor elements (SE) which form four lobe-shaped monitoring areas KB.
- a heat source in the present case an intruder EN
- enters the detection area EB of the sensor heads SK1 and SK2 signals of different heights occur in the individual sensor elements SE depending on the position and extent of the heat source.
- a direction vector RV1, RV2 to the heat source EN is calculated with a computer by geometrically correct weighting of the individual signals for each sensor head SK1, SK2.
- the current position of the heat source EN results from the intersection of the two direction detectors RV1, RV2. By continuously calculating this position, the trace of the object is traced in the computer and the alarm trigger is derived from it. In addition, the.
- the display device Trajectory or the position of the intruder can be graphed or otherwise displayed.
- Each sensor head SK1 and SK2 here has, for example, four sensor elements SE, the signals of which are each fed to an analog-digital converter AD via an amplifier VER.
- the digitized signals of both sensor heads SK1, SK2 and all sensor elements SE are fed to a microcomputer ⁇ R, which carries out the corresponding processing of these signals.
- the microcomputer ⁇ R has a control panel BF and a display device ANZ, via which an alarm signal is displayed, which can be output optically or acoustically as alarm AL.
- the movement path or position of the intruder can also be displayed on a colored screen BS connected to the display device ANZ.
- the invention not only has the advantage that fixed temperature changes do not lead to a false alarm, it also has the advantage that false alarms are reduced by better delimitation of the monitoring area. Small animals in the close range of the sensor cannot trigger false alarms either, because the distance information enables a better estimate of the intensity of the heat source and can thus be recognized whether it is an actual intruder or a fly.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3919488 | 1989-06-14 | ||
DE3919488 | 1989-06-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0402829A2 true EP0402829A2 (fr) | 1990-12-19 |
EP0402829A3 EP0402829A3 (fr) | 1991-06-12 |
Family
ID=6382750
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900111007 Withdrawn EP0402829A3 (fr) | 1989-06-14 | 1990-06-11 | Procédé et dispositif de détection d'intrus utilisant un détecteur de mouvement passif à infrarouge |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0402829A3 (fr) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2693011A1 (fr) * | 1992-06-29 | 1993-12-31 | Matra Sep Imagerie Inf | Procédé et dispositif de surveillance d'une scène tridimensionnelle, mettant en Óoeuvre des capteurs d'imagerie. |
GB2286074A (en) * | 1994-01-31 | 1995-08-02 | C & K Systems Inc | Location independent intrusion detection system |
NL9400670A (nl) * | 1994-04-26 | 1995-12-01 | Marinus Bernardus De Goeij | Alarmstelsel en een hiervoor geschikte bewegingsdetector. |
WO1995034056A1 (fr) * | 1994-06-09 | 1995-12-14 | Edouard Menoud | Dispositif de surveillance et d'alerte de la presomption de corps en danger dans une piscine |
EP0747868A1 (fr) * | 1995-06-08 | 1996-12-11 | ABBPATENT GmbH | Arrangement avec structure graduée d'émission dans l'infrarouge |
EP0747865A2 (fr) * | 1995-06-08 | 1996-12-11 | ABBPATENT GmbH | Dispositif de détermination du sens de déplacement d'une personne |
DE19548578C2 (de) * | 1995-12-27 | 2001-02-08 | Elbau Elektronik Bauelemente G | Positionsselektiver passiver Infrarot-Intrusion-Sensor |
GB2375251A (en) * | 2001-04-30 | 2002-11-06 | Infrared Integrated Syst Ltd | Monitoring a region using PIR detectors |
EP1361553A1 (fr) * | 2002-05-08 | 2003-11-12 | Infrared Integrated Systems Ltd. | Système de surveillance pour la localisation d'évenements dans un espace à trois dimensions |
WO2016016900A1 (fr) * | 2014-07-30 | 2016-02-04 | Tyco Fire & Security Gmbh | Procédé et système pour le suivi passif d'objets mobiles |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2402204A1 (de) * | 1974-01-17 | 1975-07-24 | Ficht Reinhold | Verfahren zur bestimmung der lage eines punktes innerhalb eines virtuellen messraumes und einrichtung zur durchfuehrung des verfahrens |
DE3023290A1 (de) * | 1980-06-21 | 1982-03-04 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Einrichtung zur zielerfassung von bewegten und stationaeren bodenzielen von tieffliegenden flugzeugen aus |
DE3404402C1 (de) * | 1984-02-08 | 1985-04-25 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Einrichtung zur optischen winkelmäßigen Erkennung eines beweglichen Zieles |
DE3642196A1 (de) * | 1986-12-10 | 1988-06-23 | Mel Mikro Elektronik Gmbh | Optoelektronische kollisionsschutzvorrichtung fuer fahrzeuge |
WO1989006806A1 (fr) * | 1988-01-19 | 1989-07-27 | Peter Frederick Bradbeer | Appareil de detection d'energie sensible a la direction |
-
1990
- 1990-06-11 EP EP19900111007 patent/EP0402829A3/fr not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2402204A1 (de) * | 1974-01-17 | 1975-07-24 | Ficht Reinhold | Verfahren zur bestimmung der lage eines punktes innerhalb eines virtuellen messraumes und einrichtung zur durchfuehrung des verfahrens |
DE3023290A1 (de) * | 1980-06-21 | 1982-03-04 | Messerschmitt-Bölkow-Blohm GmbH, 8000 München | Einrichtung zur zielerfassung von bewegten und stationaeren bodenzielen von tieffliegenden flugzeugen aus |
DE3404402C1 (de) * | 1984-02-08 | 1985-04-25 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Einrichtung zur optischen winkelmäßigen Erkennung eines beweglichen Zieles |
DE3642196A1 (de) * | 1986-12-10 | 1988-06-23 | Mel Mikro Elektronik Gmbh | Optoelektronische kollisionsschutzvorrichtung fuer fahrzeuge |
WO1989006806A1 (fr) * | 1988-01-19 | 1989-07-27 | Peter Frederick Bradbeer | Appareil de detection d'energie sensible a la direction |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2693011A1 (fr) * | 1992-06-29 | 1993-12-31 | Matra Sep Imagerie Inf | Procédé et dispositif de surveillance d'une scène tridimensionnelle, mettant en Óoeuvre des capteurs d'imagerie. |
EP0577491A1 (fr) * | 1992-06-29 | 1994-01-05 | Matra Cap Systemes | Procédé et dispositif de surveillance d'une scène tridimensionnelle, mettant en oeuvre des capteurs d'imagerie |
GB2286074A (en) * | 1994-01-31 | 1995-08-02 | C & K Systems Inc | Location independent intrusion detection system |
NL9400670A (nl) * | 1994-04-26 | 1995-12-01 | Marinus Bernardus De Goeij | Alarmstelsel en een hiervoor geschikte bewegingsdetector. |
US5886630A (en) * | 1994-06-09 | 1999-03-23 | Menoud; Edouard | Alarm and monitoring device for the presumption of bodies in danger in a swimming pool |
WO1995034056A1 (fr) * | 1994-06-09 | 1995-12-14 | Edouard Menoud | Dispositif de surveillance et d'alerte de la presomption de corps en danger dans une piscine |
CH691151A5 (fr) * | 1994-06-09 | 2001-04-30 | Edouard Menoud | Dispositif de surveillance et d'alerte de la présence de corps en danger dans une piscine. |
EP0747868A1 (fr) * | 1995-06-08 | 1996-12-11 | ABBPATENT GmbH | Arrangement avec structure graduée d'émission dans l'infrarouge |
EP0747865A2 (fr) * | 1995-06-08 | 1996-12-11 | ABBPATENT GmbH | Dispositif de détermination du sens de déplacement d'une personne |
EP0747865A3 (fr) * | 1995-06-08 | 1998-09-30 | ABBPATENT GmbH | Dispositif de détermination du sens de déplacement d'une personne |
DE19548578C2 (de) * | 1995-12-27 | 2001-02-08 | Elbau Elektronik Bauelemente G | Positionsselektiver passiver Infrarot-Intrusion-Sensor |
GB2375251A (en) * | 2001-04-30 | 2002-11-06 | Infrared Integrated Syst Ltd | Monitoring a region using PIR detectors |
GB2375251B (en) * | 2001-04-30 | 2003-03-05 | Infrared Integrated Syst Ltd | The location of events in a three dimensional space under surveillance |
US7355626B2 (en) | 2001-04-30 | 2008-04-08 | Infrared Integrated Systems Limited | Location of events in a three dimensional space under surveillance |
EP1361553A1 (fr) * | 2002-05-08 | 2003-11-12 | Infrared Integrated Systems Ltd. | Système de surveillance pour la localisation d'évenements dans un espace à trois dimensions |
WO2016016900A1 (fr) * | 2014-07-30 | 2016-02-04 | Tyco Fire & Security Gmbh | Procédé et système pour le suivi passif d'objets mobiles |
GB2542087A (en) * | 2014-07-30 | 2017-03-08 | Tyco Fire & Security Gmbh | Method and system for passive tracking of moving objects |
US9726544B2 (en) | 2014-07-30 | 2017-08-08 | Tyco Fire & Security Gmbh | Method and system for passive tracking of moving objects |
GB2542087B (en) * | 2014-07-30 | 2019-03-27 | Tyco Fire & Security Gmbh | Method and system for passive tracking of moving objects |
Also Published As
Publication number | Publication date |
---|---|
EP0402829A3 (fr) | 1991-06-12 |
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Effective date: 19940322 |