EP1818884B1 - Dispositif de détection de fumée - Google Patents

Dispositif de détection de fumée Download PDF

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Publication number
EP1818884B1
EP1818884B1 EP07000313A EP07000313A EP1818884B1 EP 1818884 B1 EP1818884 B1 EP 1818884B1 EP 07000313 A EP07000313 A EP 07000313A EP 07000313 A EP07000313 A EP 07000313A EP 1818884 B1 EP1818884 B1 EP 1818884B1
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EP
European Patent Office
Prior art keywords
unit
signal
detecting apparatus
smoke detecting
units
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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.)
Active
Application number
EP07000313A
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German (de)
English (en)
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EP1818884A1 (fr
Inventor
Gerhard Dzubiel
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Individual
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Individual
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
    • G08B17/107—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device for detecting light-scattering due to smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
    • G08B17/113—Constructional details

Definitions

  • the invention relates to a smoke detection device according to the preamble of claim 1.
  • a smoke detection device comprising a first signal unit for emitting and a second signal unit for receiving electromagnetic radiation, which are provided to make a measurement in a region outside the smoke detection device.
  • the signal units are equipped with transmitting and receiving diodes and are arranged in a housing which includes a translucent cover, which is mounted in front of the signal units.
  • the invention is in particular the object of providing a smoke detection device with increased measurement accuracy. It is achieved according to the invention by the features of claim 1. Further embodiments will be apparent from the dependent and dependent claims.
  • the invention relates to a smoke detection device with at least one first signal unit for emitting and at least one second signal unit for receiving electromagnetic radiation, which are provided to make a measurement in at least one area outside the smoke detection device.
  • the smoke detection device comprises at least one signal guiding unit which is arranged in the beam path of one of the signal units.
  • a "signal-carrying unit” should be understood to mean, in particular, a unit whose main extension or its greatest extent coincides with a signal-carrying direction and / or has special reflective properties for light guidance, in particular total reflection properties, by means of which a beam, in particular a light beam, also over longer distances can be performed at almost constant intensity of the beam.
  • the signal guiding unit may comprise one or more optical guide means, in particular light guides and / or glass fibers.
  • a particularly advantageous beam guidance and / or a desired deflection of the electromagnetic radiation can be achieved, wherein a radiation cone, in particular a light cone of the signal unit can be kept as small as possible by the signal guidance unit and thus a higher measurement accuracy can be achieved.
  • a “signal unit” should be understood to mean, in particular, a diode for emitting and / or receiving electromagnetic radiation, in particular light, wherein the signal units for transmitting and / or receiving electromagnetic radiation can also be made in one piece.
  • a "beam path" is to be understood here as meaning the radial course of the electromagnetic radiation.
  • the smoke detection device comprises at least one unit which is provided to align the signal guiding units coordinated with each other, whereby the measuring ranges of the signal units can be set in particular spatially and / or frequency to any points in space.
  • interfering signals in particular unwanted electromagnetic radiation
  • at least one optical unit is provided as an optical filter.
  • interference signals are to be understood as signals or radiation which are outside the frequency range emitted by the signal unit for emitting electromagnetic radiation.
  • the optical filter is provided for the detection of carbon monoxide, whereby a smoke detection by the smoke detection device based on a resulting from combustion and / or smoke gas can be achieved.
  • At least one signal unit is provided for transmitting and / or receiving infrared radiation, whereby aerosols - solid and / or liquid particles in the air, such as dust or mist - can be detected particularly advantageously and thus particularly advantageous Smoke can be detected in the room to be monitored.
  • aerosols - solid and / or liquid particles in the air such as dust or mist -
  • smoke detection device can be extended to the effect that further combustion gases can be detected by transmitting and / or receiving the appropriate frequency range.
  • At least one signal routing unit can have at least two differing beam areas, such as, in particular, two differing emission areas and / or two differing areas, via which the radiation can be received, whereby a large spatial coverage of the space to be monitored with a signal unit for transmission and / or receiving electromagnetic radiation can be achieved.
  • the smoke detection can take place via an adding up of the signals from the differing beam areas and / or by a separate detection of the signals of the differing beam areas.
  • the signal guiding unit can in this case be formed by one or more optical guide means.
  • the smoke detection device comprises a computing unit, whereby the smoke detection device can be mounted particularly flexibly within a room and also rapid data processing can take place within the smoke detection device itself.
  • a "computing unit” is to be understood to mean an evaluation unit, a control unit, a control unit and / or a control unit, wherein a computing unit may be formed both by a processor alone and in particular by a processor and further electronic components, such as memory means. Furthermore, the arithmetic unit has the software required for the operation of the smoke detection device.
  • the smoke detection device comprises at least one unit which is provided to compare the data of the signal units with each other over a longer period of time, whereby soiling, in particular slowly, over a prolonged period accumulating dirt on the signal guiding units can be detected. These contaminants can be taken into account in the data evaluation of the signal units, so that the smoke detection device is less susceptible to interference.
  • a "unit” should be understood to mean, in particular, a computing unit having a processor and at least one memory means which is provided for storing the data of the signal units over a relatively long period of time.
  • a "longer period of time” is understood to mean a period of at least one week and preferably of at least one month.
  • the smoke detection device comprises a unit which is provided for outputting an alarm signal, whereby an increased security and an efficient warning for persons who are in the room to be monitored, achieved can be.
  • the output alarm signal can be an optical and / or an acoustic signal.
  • the smoke detection device is provided with a unit which is provided for data transfer via a data network, whereby a signal from the unit via the data network can be output in case of smoke detection by the smoke detection device, in particular an emergency call signal to an external monitoring center.
  • the data network can be formed for example by a data bus or particularly advantageously by a radio network.
  • the smoke detection device having at least one first signal unit for emitting and a second signal unit for receiving electromagnetic radiation at least one further signal unit, which is provided for transmitting or receiving electromagnetic radiation.
  • a redundant smoke detection can be achieved, which ensures a further functional reliability of the smoke detection device in case of failure of a signal unit.
  • mutual control of the signal units within the smoke detection device can be achieved by the further signal unit and possible manipulations and / or disturbances of the smoker detection device can be detected and / or excluded.
  • the smoke detection device has at least one image detection sensor, whereby a smoke detection can be achieved over a large spatial area and manipulations can at least be reduced.
  • the image-spreading sensor can detect smoke propagating in space from other objects by an increasing clouding of the captured images, and advantageously an optical control option for an operator can be achieved via the image-capturing sensor.
  • the smoke detection device comprises a unit which is provided to detect movements based on the data of the image detection sensor, whereby a simpler detection of smoke can be achieved.
  • current data are compared with stored data of the image acquisition sensor in order to detect movements and / or changes in the space.
  • the movements and / or the changes in the room are detected by means of special software which is provided for a corresponding evaluation of the data of the image acquisition sensor.
  • special software which is provided for a corresponding evaluation of the data of the image acquisition sensor.
  • a smoke development can be analyzed - recognizable by spread of smoke in the room or increasing cloudiness by smoke particles - and thus by other, pretending smoke particles, such as cigarette smoke of persons or dust, are distinguished.
  • the image detection sensor is mounted pivotably about at least one axis, whereby the smoke detection can be extended to a larger area of the space to be monitored.
  • the image-capturing sensor is particularly advantageously mounted so as to be pivotable about at least two axes, whereby a particularly large angular coverage of the space to be monitored can be achieved with only one image-capturing sensor.
  • FIG. 1 shows a schematic smoke detection device in a side view.
  • This comprises four signal units 10a, 12a, 14a, 16a, each with a previously arranged signal guide unit 18a, 20a, 22a, 24a, an image acquisition sensor 50a and a computing unit 34a.
  • the arithmetic unit 34a has a memory unit 56a and a processor (not shown here).
  • the smoke detection device comprises two units 44a, 46a, which are provided for signal output, and connected to a power supply unit not shown in detail unit 58a, which is intended to provide the smoke detection device with energy.
  • the unit 58a may also include a battery and / or further power storage means, which enable a power supply of the smoke detection device.
  • the smoke detection device has an internal data line 60a, which is formed by a data bus, and a unit 48a, which exchanges data with external, central units, which are not shown here, via a radio link.
  • the unit 48a can also exchange the data with external units via a data bus, which is not detailed here.
  • the power supply of the smoke detection device to integrate into the external data bus.
  • the smoke detection device has a housing 62a which is closed at the bottom by a cover 64a.
  • the signal units 10a, 12a for emitting electromagnetic radiation each comprise a transmitting diode 66a, 68a;
  • the signal units 14a, 16a for receiving electromagnetic radiation each comprise a receiving diode 70a, 72a (FIG. FIGS. 1 and 2 ).
  • the smoke detection within the smoke detection device is performed by measuring an intensity of combustion gases, such as carbon dioxide, and / or smoke particles in the air. Smoke detection occurs when the measured intensity is above a natural intensity of the combustion gases and / or the smoke particles in the air.
  • the signal guiding units 18a, 20a, 22a, 24a which are each arranged in a beam path 26a, 28a, 30a, 32a of the signal units 10a, 12a, 14a, 16a, are formed by optical fibers which emit the electromagnetic radiation due to Forward total reflections within the light guides. In this case, a scatter zone of the guided by the light guide radiation of the signal units 10a, 12a is reduced or the incident on the signal units 14a, 16a radiation is focused on this.
  • an optical filter 36a, 38a is integrated in the signal guiding units 22a, 24a which are arranged in the beam path 30a, 32a of the signal units 14a, 16a for receiving electromagnetic radiation.
  • the optical filters 36a, 38a are tuned to the frequency range of the transmitting diodes 66a, 68a and filter extraneous radiation, such as visible light, out of the receiving spectrum of the receiving diodes 70a, 72a, so that only radiation in the infrared range can reach the receiving diodes 70a, 72a.
  • the optical filters 36a, 38a are designed so that the combustion gas carbon monoxide can be detected in the space to be monitored. The detection of carbon monoxide takes place during operation, depending on the orientation of the signal-carrying units 18a, 20a, 22a, 24a, at arbitrary measuring areas 40a, 42a in the room.
  • the signal routing units 18a, 20a, 22a, 24a and the optical filters 36a, 38a are further provided for measurements of carbon monoxide in measurement areas 40a, 42a, which may also be located at greater distances from the smoke detection device, such as near-ground measurement areas 40a, 42a.
  • the measuring areas 40a, 42a have a distance of about two meters from the smoke detection device.
  • the signal routing units 18a, 20a, 22a, 24a are particularly flexible and flexible, so that a measuring range 40a, 42a by means of rotation of the signal guiding units 18a, 20a, 22a, 24a to almost any Points of the space to be monitored can be aligned, as shown in FIG. 2 by way of example with reference to the signal units 12a, 16a or the signal-guiding units 20a, 24a.
  • the alignment of the signal-carrying units 18a, 20a, 22a, 24a is controlled via an actuator unit 88a, 90a, 92a, 94a ( FIGS. 1 and 2 ), which turns the light guides to the desired position.
  • the actuator units 88a, 90a, 92a, 94a are controlled by the arithmetic unit 34a and are disposed inside the cover plate 64a.
  • the number of measuring areas 40a, 42a ( FIGS. 1 and 2 ) in the space is determined by the number of signal routing units 18a, 20a, 22a, 24a or the signal units 10a, 12a, 14a, 16a, so that in a smoke detection device with a plurality of signal routing units 18a, 20a, 22a, 24a a particularly advantageous and redundant Control of almost the entire space to be monitored takes place.
  • the alignment of the signal-carrying units 18a, 20a of the transmitting diodes 66a, 68a and the signal-carrying units 22a, 24a of the receiving diodes 70a, 72a by the actuator units 88a, 90a, 92a, 94a comprises a spatial and / or frequency orientation.
  • the signals of the signal units 10a, 12a, 14a, 16a are passed via the internal data line 60a to the arithmetic unit 34a, which evaluates them.
  • the arithmetic unit 34a has the necessary programs and the corresponding software stored in the memory unit 56a.
  • control of the individual signal units 10a, 12a, 14a, 16a takes place in the arithmetic unit 34a on the basis of the signals received from the signal units 10a, 12a, 14a, 16a, so that disturbances and / or manipulations are detected and in the data evaluation or the Smoke detection by the computing unit 34a are taken into account.
  • the data of the signal units 14a, 16a for receiving infrared radiation are stored by the arithmetic unit 34a in the storage unit 56a for a long period of time. These data are compared by the arithmetic unit 34a with current data of the signal units 14a, 16a in order to detect possible contamination and / or malfunctions of the individual signal routing units 22a, 24a. These contaminations and / or disturbances are taken into account by the computing unit 34a in the data evaluation, so that a virtually maintenance-free operation of the smoke detection device is made possible.
  • the image acquisition sensor 50a formed by a CCD camera is mounted ( FIG. 1 ) which is pivotally mounted about two axes 52a, 54a.
  • the image sensing sensor 50a may also be located in the cover 64a or within the area of the smoke detection device included in the housing 62a, instead of on the surface 74a of the cover 64a facing away from the signal units 10a, 12a, 14a, 16a to be appropriate.
  • the image detection sensor 50a is driven via the internal data line 60a by the computing unit 34a, which has the operating programs and the corresponding software required for this purpose and stored in the memory unit 56a.
  • the data of the image acquisition sensor 50a are evaluated by the computing unit 34a by means of the corresponding software and stored in the storage unit 56a.
  • the arithmetic unit 34a compares the current data of the image acquisition sensor 50a with the last stored data in order to detect changes and / or movements in the space to be monitored.
  • Smoke from other objects and / or dust particles in the air can be distinguished on the basis of movements that propagate through the space or due to clouding of the captured images caused by smoke.
  • this can, under the control of the arithmetic unit 34a, be aligned to arbitrary points in space and thus also to ground-level objects.
  • the image acquisition sensor 50a in combination with the arithmetic unit 34a and the unit 48a, which exchanges data via a radio network, can also be controlled by external units, such as a central monitoring unit and / or by a remote control.
  • external units such as a central monitoring unit and / or by a remote control.
  • the space to be monitored by the image sensing sensor 50a may be searched from the outside for persons in the room, and / or the image sensing sensor 50a may provide more accurate information about a smoke and / or fire in the room.
  • further control of the smoke detection is provided by the image sensing sensor 50a by the computing unit 34a comparing the data of the image sensing sensor 50a with the data of the signal units 10a, 12a, 14a, 16a for receiving infrared radiation.
  • a smoke detection is performed by the arithmetic unit 34a on the basis of the data of the image acquisition sensor 50a and the signal units 10a, 12a, 14a, 16a, an alarm signal is forwarded via the internal data line 60a to the units 44a, 46a for signal output ( FIG. 1 ).
  • the signal output units 44a, 46a comprise optical and acoustic output means not shown here for the local output of optical and acoustic alarm signals.
  • the smoke detection device has the unit 48a, which is provided for outputting alarm signals via a data network formed by a radio link.
  • an emergency or smoke detection alarm signals are routed from the computer 34a via the internal data line 60a to the unit 48a, which transmits them via radio signals to a central office not shown here.
  • FIG. 3 shows a partial section of an alternative, schematically illustrated smoke detection device. Substantially corresponding components and features are in principle numbered with the same reference numerals, and to distinguish the exemplary embodiments, the reference numerals refer to the letters a (FIG. FIG. 1 and 2 ) or b ( FIG. 3 ) are added. With regard to features and functions that remain the same, reference may be made to the description of the exemplary embodiment in FIG FIG. 1 to get expelled. In the FIG. 3 The following description is essentially limited to the differences from the exemplary embodiment in FIGS FIGS. 1 and 2 ,
  • the smoke detection device here comprises two signal units 12b, 16b each having a signal guiding unit 20b, 24b.
  • the signal routing units 20b, 24b of the signal units 12b, 16b are each formed by two optical fibers 76b, 78b, 80b, 82b and cover two different measuring ranges 84b, 86b of the signal units 12b, 16b.
  • the signals of the individual optical fibers 76b, 78b, 80b, 82b for each of the signal-carrying units 20b, 24b of a in FIG. 3 not shown in detail.
  • An extension of the signal guiding units 20b, 24b with further light guides is conceivable in a further embodiment of the smoke detection device.

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  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Claims (14)

  1. Dispositif de détection de fumée comprenant au moins une première unité de signal (10a, 12a ; 12b) destinée à émettre un rayonnement électromagnétique et au moins une deuxième unité de signal (14a, 16a ; 16b) qui est prévue pour recevoir un rayonnement électromagnétique diffusé depuis au moins une zone à l'extérieur du dispositif de détection de fumée, le dispositif de détection de fumée étant prévu pour effectuer une mesure, caractérisé en ce qu'au moins une unité de guidage de signal (18a, 20a, 22a, 24a ; 20b, 24b) du dispositif de détection de fumée est disposée dans le trajet du rayon (26a, 28a, 30a, 32a ; 26b, 32b) de l'une des unités de signal (10a, 12a, 14a, 16a ; 12b, 16b), l'unité de guidage de signal (18a, 20a, 22a, 24a ; 20b, 24b) comprenant un ou plusieurs moyens de guidage optiques pour guider la lumière, notamment un guide d'ondes optique et/ou une fibre de verre, au moins une unité d'actionnement (88a, 90a, 92a, 94a) étant prévue à l'aide de laquelle l'unité de guidage de signal (18a, 20a, 22a, 24a : 20b, 24b) peut être orientée dans l'espace.
  2. Dispositif de détection de fumée selon la revendication 1, caractérisé par ladite unité d'actionnement (88a, 90a, 92a, 94a ; 90b, 92b) qui est prévue pour orienter les unités de guidage de signal (10a, 12a, 14a, 16a ; 12b, 16b) les unes avec les autres d'une manière accordée.
  3. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu au moins une unité de guidage de signal (22a, 24a) sous la forme d'un filtre optique (36a, 38a).
  4. Dispositif de détection de fumée selon la revendication 3, caractérisé en ce que le filtre optique (36a, 38a) est prévu pour détecter du monoxyde de carbone.
  5. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé en ce qu'au moins une unité de signal (10a, 12a, 14a, 16a ; 12b, 16b) est prévue pour émettre et/ou recevoir un rayonnement infrarouge.
  6. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé en ce qu'au moins une unité de guidage de signal (20b, 24b) présente au moins deux zones de rayonnement distinctes.
  7. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé par au moins une unité de calcul (34a).
  8. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé par au moins une unité (34a) qui est prévue pour comparer entre elles les données des unités de signal (10a, 12a, 14a, 16a ; 12b, 16b) sur une longue période.
  9. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé par une unité (44a, 46a) qui est prévue pour délivrer un signal d'alarme.
  10. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé par une unité (48a) qui est prévue pour délivrer des signaux par le biais d'un réseau de données.
  11. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé par au moins une unité de signal (12a, 16a) supplémentaire qui est prévue pour émettre ou recevoir un rayonnement électromagnétique.
  12. Dispositif de détection de fumée selon l'une des revendications précédentes, caractérisé par au moins un capteur d'acquisition d'image (50a).
  13. Dispositif de détection de fumée selon au moins la revendication 12, caractérisé par une unité (34a) qui est prévue pour détecter des mouvements au moyen des données du capteur d'acquisition d'image (50a).
  14. Dispositif de détection de fumée selon au moins la revendication 12, caractérisé en ce que le capteur d'acquisition d'image (50a) est monté de manière à pouvoir pivoter au moins autour d'un axe (52a, 54a).
EP07000313A 2006-02-13 2007-01-09 Dispositif de détection de fumée Active EP1818884B1 (fr)

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DE102006006420A DE102006006420A1 (de) 2006-02-13 2006-02-13 Raucherkennungsvorrichtung

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EP1818884B1 true EP1818884B1 (fr) 2010-03-31

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AT (1) ATE463022T1 (fr)
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DE102008009213B4 (de) * 2008-02-15 2010-09-02 Perkinelmer Optoelectronics Gmbh & Co.Kg Strahlungsleiter, Detektor, Herstellungsverfahren

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CH546989A (de) * 1972-12-06 1974-03-15 Cerberus Ag Verfahren und vorrichtung zur brandmeldung.
BE795504A (fr) * 1973-02-15 1973-08-16 Centre Rech Metallurgique Procede pour mesurer rapidement la teneur en co des gaz contenus dans un convertisseur
DE3031674A1 (de) * 1980-08-22 1982-04-22 Brown, Boveri & Cie Ag, 6800 Mannheim Anordnung zur brandraucherkennung
JPS638538A (ja) * 1986-06-27 1988-01-14 Matsushita Electric Ind Co Ltd 煙感知器
DE4023649A1 (de) * 1989-08-18 1991-02-21 Preussag Ag Feuerschutz Verfahren und vorrichtung zum erkennen von gefahrenzustaenden in einem raum
US5751422A (en) * 1996-02-26 1998-05-12 Particle Measuring Systems, Inc. In-situ particle detection utilizing optical coupling
JPH1123458A (ja) * 1997-05-08 1999-01-29 Nittan Co Ltd 煙感知器および監視制御システム
DE19850564B4 (de) * 1998-11-03 2005-12-29 Minimax Gmbh & Co. Kg Verfahren zur Branderkennung mit Gassensoren
GB2347999B (en) * 1999-03-17 2001-11-28 Cambustion Ltd Oxides of carbon detector
DE20023533U1 (de) * 1999-10-26 2004-11-11 Schako Klima Luft Ferdinand Schad Kg Zweigniederlassung Kolbingen Vorrichtung zur Erkennung von Rauch
DE10110231A1 (de) * 2001-03-02 2002-09-26 Bosch Gmbh Robert Optische Blende
DE10135705A1 (de) * 2001-07-21 2003-02-20 Grecon Greten Gmbh & Co Kg Verfahren und Vorrichtung zur Auswertung elektromagnetischer Strahlung
EP1381005A1 (fr) * 2002-07-08 2004-01-14 Siemens Building Technologies AG Détecteur d'événement avec une caméra
DE10246056A1 (de) * 2002-10-02 2004-04-22 Robert Bosch Gmbh Rauchmelder

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ATE463022T1 (de) 2010-04-15
EP1818884A1 (fr) 2007-08-15
DE102006006420A1 (de) 2007-08-16
DE502007003264D1 (de) 2010-05-12

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