EP1191496A1 - Streulichtrauchmelder - Google Patents
Streulichtrauchmelder Download PDFInfo
- Publication number
- EP1191496A1 EP1191496A1 EP01122157A EP01122157A EP1191496A1 EP 1191496 A1 EP1191496 A1 EP 1191496A1 EP 01122157 A EP01122157 A EP 01122157A EP 01122157 A EP01122157 A EP 01122157A EP 1191496 A1 EP1191496 A1 EP 1191496A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- smoke detector
- receiver
- scattered
- smoke
- 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
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Images
Classifications
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- 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
-
- 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
- G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
- G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
-
- 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
- G08B29/043—Monitoring of the detection circuits of fire detection circuits
-
- 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 is based on a scattered light smoke detector the genus of the independent claim.
- the scattered light smoke detector according to the invention with the features the independent claim has the Advantage that a distinction between permanent Foreign objects in the scattering point of the scattered light smoke detector and actual smoke is possible.
- Such foreign objects can e.g. Ladders that are parked for handicrafts, or boxes stacked up to the ceiling.
- Spiders can be found in narrow shafts in the free space of the Scattered Smoke Detectors build their network and by chance in the scattering point of the scattered light smoke detector permanently linger.
- the scattered light smoke detector according to the invention recognizes such foreign bodies and eliminates them from the Measurement signals so that false fire reports are avoided become.
- the means for Differentiation between smoke and other foreign bodies Processor for analyzing the time course of received signals of the light receiver, wherein the processor to the Light receiver is connected. Based on the passage of time it is advantageously possible to determine whether smoke or another foreign object in the scattered light smoke detector is present. With smoke, it increases with time Intensity of the scattered light signal registered, while at Penetration of a foreign body into the scattering point a kind Jump function occurs briefly, then back in again solid signal to pass. This distinction in view so a jump in the time function allows on easy way of distinguishing between smoke and one other foreign body. It is still an advantage that an existing scattered light smoke detector is only about software must be added, which this temporal analysis of the Received signal from the light receiver. So that's the Scattered light detectors according to the invention in a simple manner realizable.
- an optic preferably a faceted mirror, attached is the scatter signals from an area around the scatter point in couples the light receiver.
- the total signal on Light receiver is the integral of the signals from all Scattering areas in this area.
- suitable Faceted mirror it is possible to spatially many to detect spreading areas in which the Detector reacts sensitively to stray light. If there is of smoke it can be assumed that all spreading areas in the Essentially homogeneous with the corresponding smoke density deliver a share of the scattered light signal, while a Spider locally scatters a partial signal on the receiver. With such an arrangement can be done by simple Amplitude comparison distinguished a spider from smoke become.
- the light receiver is designed as a photo receiver array, the Photo receiver array at least two photo receiver elements having. It is therefore advantageously possible, and not only an integral of signals from different scattering points too measure, but a spatial distribution of the scatter signals take. Because of this spatial distribution, it is advantageously possible between smoke, small animals and Distinguish objects. You still get one Information about the distribution of smoke density and the Distance of the particles from the scattered light smoke detector. With help of cross-correlation techniques, which are based on a processor Scattered light smoke detectors are still implemented the speed of the smoke or objects measurable near the scattered light smoke detector. By a suitable optics, preferably a lens, will be the recording enables the spatial distribution of the scatter signals.
- the scattered light smoke detector train such that a distinction between smoke and other foreign bodies is possible is the formation of the Light source with adjustable wavelength. So that will advantageously exploited the effect that the Rayleigh scattering is the scattering behavior of the wavelength of the Radiation is dependent.
- the Rayleigh scattering different signal intensities as a function of wavelength. For particles that are large compared to the wavelength, the scatter does not depend or only slightly depending on the wavelength, therefore at tuning the light transmitter is not significant Effect occur with the scatter signals. With small ones Particles like smoke particles, this effect is the Intensity variation depending on the wavelength clearly measurable. It is thus advantageously possible distinguish such smoke particles from larger parts. This distinction is then made by a processor in the Scattered light smoke detector according to the invention performed.
- the light transmitter with is connected to an amplitude modulator.
- amplitude-modulated light signals enable due to the phase shift between broadcast and received signals, these are the impulses that come from the Amplitude modulation arose Distance determination from the scattering object while a pulse broadening, i.e. a dispersion, a measure of is a diffuse scattering body, like one in particular Cloud of smoke is. So it is advantageous possible that depending on the pulse broadening It can be determined whether smoke or another foreign body is present.
- the Scattered light smoke detector has an ultrasonic sensor, the ultrasonic sensor being a transmitter and a receiver has and wherein the ultrasonic sensor is arranged in such a way is so that the ultrasonic sensor covers the area around the Scatter point monitored.
- the ultrasonic sensor monitors it advantageously the optical scattering range of the Scattered light detector. There is a solid foreign body in the scattering range, the ultrasonic sensor and the Scattered light sensor a signal. Is there smoke in the Scattering point, only the scattered light sensor receives a signal but not the ultrasonic sensor.
- Ultrasonic sensors in the megahertz range are particularly suitable work because these ultrasonic sensors are a very have good directivity.
- the ultrasonic sensor determine whether there is a foreign body in an area the smoke detector, which may be a Influencing the flow conditions for the Fire detection means. This can serve as a warning from the Headquarters are issued.
- FIG. 1 shows a first embodiment of the scattered light smoke detector according to the invention
- FIG. 2 a second embodiment of the invention Scattered light smoke detector with a facet mirror
- Figure 3 a third embodiment of the invention Scattered light smoke detector with a photo receiver array
- figure 4 shows a fourth embodiment of the invention Scattered light smoke detector with an amplitude modulator
- figure 5 shows a fifth embodiment of the invention Scattered light smoke detector with an ellipsoid
- Figure 6 a amplitude-modulated optical signal for determining a Distance
- Figure 7 amplitude-modulated optical signals to identify a cloud of smoke
- Figure 8 the Scattered light smoke detector according to the invention with a Ultrasonic detection for foreign bodies.
- Scattered light smoke detectors which are used as fire detectors, have the advantage, independent of stray light sources, Dust, pollution, insects, short-term smoke and briefly introduced foreign bodies in the measuring point, such as e.g. Cleaning equipment to be.
- Longer term Clouds of smoke such as those that arise during a fire, provide the scattered light smoke detector for a clear scatter signal, which is recognized as a fire detection signal, for example by comparison with a predetermined threshold. at permanent retention of objects at the measuring point, that is the scatter point, becomes the scattered light smoke detector however, functionally report a fire.
- a scattered light smoke detector proposed proposed that has means to switch between smoke and distinguish other foreign objects. Such means relate in particular to a processor, the timing received signals from the light receiver.
- FIG 1 is a first embodiment of the Scattered light smoke detector according to the invention as a block diagram shown.
- a cover 3 protects the Scattering smoke detector against moisture, aggressive gases and mechanical damage.
- the cover 3 is as made of transparent plastic. Alternatively it is possible to use glass.
- the cover 3 is like this procure so that it is for the light for the Scattered light measurement is transparent. It can also be used as a Filters for unwanted interference. In particular if infrared radiation is used, it is Ambient light easily through the cover 3 and Light receiver 2 filterable.
- a light transmitter 1, here a light emitting diode Infrared.
- a laser is also preferred a semiconductor laser, and / or other wavelength ranges possible, which is controlled by a transmitter control 5.
- the transmitter control 5 is therefore a driver circuit for the light transmitter 1. In the case of a laser, it is one typical laser driver circuit with temperature and Bias compensation.
- the control 5 is a second output connected to a processor 7.
- the Processor 7 is connected to a data input / output Memory 8 connected in the permanently stored Reference signals are stored and that for storage of intermediate values is used.
- the processor 7 with a data input Receive evaluation 6 connected. Via a data output the processor 7 to a signaling device 9 connected.
- An input of the reception evaluation 6 is with connected to a light receiver 2.
- the light receiver 2 is here is a photodiode.
- the light emitting diode 1 and the photodiode 2 are arranged such that a scattering point 4 outside the Scattered smoke detector is located outdoors.
- the signaling device 9 can be a Light, a siren or a communication module, a signaling to a center, preferably via a bus transmits. This is particularly advantageous if several scattered light smoke detectors are used, the are connected to the control center via the bus to a central monitoring of a building.
- the processor 7 now carries out a time profile analysis of the Receive signals of the photodiode 2 through.
- Smoke occurs in the Scatter point 4, this leads to a continuous Increase in the intensity of the scattered light received by the Photodiode 2.
- a foreign object is in the scattering point 4 is introduced, then when inserting the foreign body in the scatter point 4 a jump in the course of time Intensity function of the received signals by the Photodiode 2 take place, then after the introduction and the Remain of the foreign body in the scattering point 4 again to produce a flat signal plateau.
- a brief appearance of a foreign body in the scattering point 4 calls a short one Impulse in the reception function of the scatter signals and is thus recognized as a signal that is not used for Alarm triggering is used.
- FIG 2 is a second embodiment of the Scattered smoke detector according to the invention shown, wherein around the light receiver 2 a faceted mirror of two concave mirrors (concave mirror segments) 10 and 11 attached is.
- the concave mirrors 10 and 11 collect light from one Area around its own scattering point and couple it into the light receiver 2 a.
- the or the scatter points are Strictly speaking, volume areas where the light beam of the Radiation source and the receiving lobe of the light receiver to cut.
- the light receiver 2 is therefore sensitive all around, so that the light receiver 2 now consists of several diodes that light can receive from different directions, is composed.
- the cover 3 in turn protects the Scattered light smoke detector against external attacks.
- the light receiver 2 is through its output with the Receive evaluation 6 connected via its data output is connected to the processor 7.
- the processor 7 is connected to the memory 8 via a data input / output.
- the processor 7 is connected to the via a data output Signaling device 9 connected.
- To a second The data input of the processor 7 is the transmitter control 5 connected.
- a second output of the transmitter control 5 leads to the light transmitter 1, here again a light emitting diode is.
- a laser can also be used here.
- the concave mirrors 10 and 11 as Faceted mirror is the integral of the captured Scattered areas formed by the light receiver 2.
- Presence of smoke is assumed to be everyone Scattering areas essentially homogeneous with the corresponding Provide smoke density a share of the scattered light signal, while a spider only locally sends a partial signal to the Recipient scatters.
- the evaluation can in particular also by evaluating the time signal. Smoke there a continuous signal while an insect as an example for a foreign body a signal jump when leaving and Enter each segment. An insect would become a pulse train when crossing through the scattering area produce.
- a spider would be a signal result that is below the threshold. The threshold is determined based on experimental data.
- FIG. 3 shows a third embodiment of the Sreulich smoke detector according to the invention shown.
- the Cover 3 again protects the scattered light smoke detector external attacks.
- the light transmitter 1 is via its entrance connected to the transmitter control 5.
- the transmitter control 5 is connected to processor 7 via a second output connected.
- the processor 7 is via a data input / output connected to the memory 8.
- To a second data input of processor 7 is a photo receiver array evaluation 13 connected.
- a signaling device 9 is connected to a photo receiver array 12.
- the Photo receiver array evaluation 13 is connected via its input connected to a photo receiver array 12.
- the photo receiver array 12 consists of an array of photodiodes. It can alternatively also a CCD (Charged Coupled Device) line, CCD matrix or a CMOS matrix.
- a lens 14 is between cover 3 and photoreceptor array 12 arranged. The lens 14 is arranged such that the Photo diodes of the photoreceptor array 12 have several local areas Detect around scattering point 4.
- the photo receiver array evaluation 13 asks the individual Signals from the photodiodes and digitized them to then to be transferred to the processor 7, which is therefore a Spatial resolution of the received signals around the scattering point 4 performs. It is possible not only the integral of the Receive signals from the area around the scattering point 4 measure, but with the lens 14 a local distribution of Record signals. Through rays 15, 16, 17 and 18 are examples of two local areas, which by the Photo receiver diode array 12 are detected, shown. This spatial resolution can now clearly between Smoke that will be homogeneous, small animals that are only in individual areas popping up, and items differ. For items that are slightly larger, will the received intensity signal between two photodiodes of the photo receiver array a jump in the received Cause light intensity. It is also possible that when inserting an object several photodiodes of the Photo receiver arrays are wandered through and in time interval produces a typical signal pattern what is due to the insertion of an object into the Stray field of the scattered light smoke detector.
- FIG. 4 shows a fourth embodiment of the Scattered smoke detector according to the invention shown.
- the Cover 3 in turn protects the scattered light smoke detector external intervention.
- the light transmitter 1 is above its Input connected to an amplitude modulator 19.
- On Data output of the amplitude modulator 19 leads to a first data input of the processor 7.
- the transmitter control 5 is at a data input of the amplitude modulator 19 connected.
- a second output of the transmitter control 5 leads to a second data input of the processor 7.
- the Processor 7 is connected to the via its third data input Receiver evaluation 6 connected. Via a data input / output the processor 7 is connected to the memory 8. Via a data output of the processor 7 Signaling device 9 connected.
- the receiver evaluation 6 is the light receiver 2 connected.
- the light transmitter 1 and the light receiver 2 are arranged so that the scattering point 4 outside the Scattered smoke detector is located outdoors.
- the amplitude modulator 19 forms from the electrical signal the transmitter control 5 a pulse train and thereby leads an amplitude modulation. In its simplest form this is simply a switch so that a sequence of periodic light pulses in the light transmitter 1 is generated and then another blanking is carried out and this alternately in one cycle, which the amplitude modulator 19 pretends.
- the processor 7 evaluates the received signals in Comparison to these transmitted signals that the Transmits amplitude modulator 19 directly to processor 7, by.
- processor 7 is able, on the one hand a distance determination based on the phase shift between the transmitted and the received pulses perform and check on the other hand whether it is a cloud of smoke or an object. Is at all Finding nothing at scatter point 4 except air will not Signals are scattered and the receiver 2 only receives Ambient light, which by appropriate choice of Light wavelength or the light wavelength range as well (electronic) constant light suppression eliminated can be.
- FIG. 6 shows how pulse sequences, the have been sent and received in the phase differ.
- Figure 6a is the pulse train sent shown by the arrow 21 on the Reflection plane 22 falls.
- Figure 6b is the received one Pulse train shown. You recognize through one Time comparison that the phase shift 23 occurred is. The phase shift 23 is a measure of the Distance from the light transmitter and receiver to the Reflection plane 22.
- FIG. 7a there is again a transmitted one Pulse train shown that hits a cloud of smoke 25.
- the pulse train received is from Cloud of smoke 25 shown. Because of that many scattering centers in the cloud of smoke 25, the impulses widen the transmitted pulse train A, and there is one Pulse dispersion as shown in Figure 7b.
- the width of the received pulses in Figure 7b is a measure of whether smoke is present or not. This can be done using a Threshold value comparison can be determined by the processor 7. This threshold value is then specified and in memory 8 stored.
- objects of one Differentiating a cloud of smoke is the use of a Light source with tunable wavelength as a light transmitter 1.
- a Light source with tunable wavelength can be a tunable Semiconductor lasers are used in the infrared range tuned over a predetermined wavelength range to see if the scattered light signals are dependent on the wavelength. This spread will Called Rayleigh scattering. With small particles, as in there is a cloud of smoke, this is Rayleigh scattering wavelength dependent.
- the processor 7 is thus on the Transmitter control 5 over the currently used wavelength informed, then the received signals as a function of Analyze transmission wavelength.
- FIG. 5 shows a fifth embodiment of the Scattered smoke detector according to the invention shown.
- the Cover 3 again protects the scattered light smoke detector external interventions.
- the light transmitter 1 is above its Input connected to the transmitter control 5, the Transmitter control 5 via a data output with a first Data input of the processor 7 is connected.
- the processor 7 is via a data input / output with the memory 8 connected.
- the processor is via a second data input 7 connected to the reception evaluation 6.
- At one Data output of processor 7 is the Signaling device 9 connected.
- the Light receiver 2 is at an input of the Receiver evaluation 6 connected. To the light receiver 2 an ellipsoid 20 is arranged, which ensures that as much scattered light as possible in the light receiver 2 is coupled. This improves the signal-to-noise ratio of the scattered smoke detector.
- An alternative method is that a stronger light transmitter 1 is used.
- the 8 is the scattered light smoke detector according to the invention with an ultrasound detection.
- the light transmitter 1 and the light receiver 2 are arranged so that the Scattering point 4 outside of the scattered light smoke detector outdoors lies.
- the cover 3 protects the scattered light smoke detector external attacks.
- At an input of the light transmitter 1 is the transmitter control 5 connected.
- a data output of the Transmitter control 5 leads to a first data input of the Processor 7.
- To a second data input of processor 7 signal processing 28 is connected, others Input an ultrasound receiver 27 is connected.
- the ultrasound receiver is aimed at scatter point 4, to which an ultrasonic transmitter 26 is also aligned.
- the Ultrasonic transmitter is either in continuous operation or in operated periodically.
- the processor 7 receive evaluation 6 connected. To a data output the processor 7 is connected to a signal 9. The processor 7 is connected to the processor via a data input Memory 8 connected. At an entrance to the Receiving evaluation 6, the light receiver 2 is connected.
- the function of an ultrasound transmitter and receiver can also be integrated in a component. It will be a first Ultrasound pulse emitted. Then you switch to reception around and waits for that from an existing one Object reflected signal (echo operation).
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Abstract
Description
Claims (10)
- Streulichtrauchmelder, wobei der Streulichtrauchmelder einen Lichtsender (1) und einen Lichtempfänger (2) aufweist, die derart angeordnet sind, so dass der Streupunkt (4) von dem Lichtsender (1) und dem Lichtempfänger (2) außerhalb des Streulichtrauchmelders im Freien liegt, dadurch gekennzeichnet, dass der Streulichtrauchmelder eine Abdeckung (3) zum Schutz des Lichtsenders und des Lichtempfängers (2) und Mittel (7) zur Unterscheidung zwischen Rauch und anderen Fremdkörpern, die sich in einem Gebiet um den Streupunkt (4) befinden, aufweist.
- Streulichtrauchmelder nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zur Unterscheidung zwischen Rauch und anderen Fremdkörpern einen Prozessor (7) zur Analyse des Zeitverlaufs von Empfangssignalen des Lichtempfängers (2) aufweisen, wobei der Prozessor (7) an den Lichtempfänger (2) angeschließbar ist.
- Streulichtrauchmelder nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mittel zur Unterscheidung zwischen Rauch und anderen Fremdkörpern eine Optik (10, 11) an dem Lichtempfänger (2) aufweisen, die Streusignale aus mehreren Streubereichen in einem Gebiet um den Streupunkt (4) in den Lichtempfänger (2) einkoppelt.
- Streulichtrauchmelder nach Anspruch 1, dadurch gekennzeichnet, dass die Optik als Facettenspiegel (10, 11) ausgebildet ist.
- Streulichtrauchmelder nach Anspruch 2, 3 oder 4, dadurch gekennzeichnet, dass der Lichtempfänger als ein Fotoempfänger-Array (12) ausgebildet ist, wobei der Fotoempfänger-Array (12) wenigstens zwei Fotoempfänger-Elemente aufweist.
- Streulichtrauchmelder nach Anspruch 5, dadurch gekennzeichnet, dass ein Linsensystem (14) vor dem Fotoempfänger-Array (12) angeordnet ist.
- Streulichtrauchmelder nach Anspruch 2, 3, 4, 5 oder 6, dadurch gekennzeichnet, dass der Lichtsender (1) als eine durchstimmbare Lichtquelle ausgebildet ist, wobei die durchstimmbare Lichtquelle in Abhängigkeit von Steuersignalen von einer Senderansteuerung (5) Licht mit einer veränderten Wellenlänge emittiert.
- Streulichtrauchmelder nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass der Lichtsender (1) mit einem Amplitudenmodulator (19) verbindbar ist.
- Streulichtrauchmelder nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, dass der Streulichtrauchmelder einen Ultraschallsensor aufweist, wobei der Ultraschallsensor einen Ultraschallsender und einen Ultraschallempfänger aufweist und dass der Ultraschallsensor derart angeordnet ist, so dass der Ultraschallsensor das Gebiet um den Streupunkt (4) überwacht.
- Streulichtrauchmelder nach Anspruch 9, dadurch gekennzeichnet, dass der Ultraschallsensor im Echobetrieb betreibbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10046992 | 2000-09-22 | ||
DE10046992A DE10046992C1 (de) | 2000-09-22 | 2000-09-22 | Streulichtrauchmelder |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1191496A1 true EP1191496A1 (de) | 2002-03-27 |
EP1191496B1 EP1191496B1 (de) | 2004-08-11 |
EP1191496B2 EP1191496B2 (de) | 2010-11-24 |
Family
ID=7657231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01122157A Expired - Lifetime EP1191496B2 (de) | 2000-09-22 | 2001-09-15 | Streulichtrauchmelder |
Country Status (6)
Country | Link |
---|---|
US (1) | US6515589B2 (de) |
EP (1) | EP1191496B2 (de) |
AT (1) | ATE273545T1 (de) |
DE (3) | DE10046992C1 (de) |
ES (1) | ES2225374T5 (de) |
TR (1) | TR200402201T4 (de) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008043451A2 (de) | 2006-10-09 | 2008-04-17 | Schako Klima Luft Ferdinand Schad Kg | Vorrichtung zur erkennung von rauch in einem raum |
DE102007013295A1 (de) | 2007-03-16 | 2008-09-18 | Aoa Apparatebau Gauting Gmbh | Rauchmelder |
EP2043068A1 (de) * | 2007-09-28 | 2009-04-01 | Siemens Building Technologies Fire & Security Products GmbH & Co. oHG | Vorrichtung zur Überwachung eines Brandmelders und Konfigurierungsverfahren und Brandmelder |
EP2093734A1 (de) | 2008-02-19 | 2009-08-26 | Siemens Aktiengesellschaft | Rauchmelder mit zeitlicher Auswertung eines Rückstreusignals, Testverfahren für Funktionsfähigkeit eines Rauchmelders |
EP2189956A1 (de) | 2008-11-21 | 2010-05-26 | Hekatron Vertriebs GmbH | Brandmelder und Verfahren zur Erkennung von Verschmutzungen |
EP2348495A1 (de) * | 2009-12-04 | 2011-07-27 | Atral-Secal GmbH | Rauchmelder mit Ultraschall-Abdecküberwachung |
WO2012167858A1 (de) * | 2011-06-09 | 2012-12-13 | Ista International Gmbh | Rauchwarnmelder und verfahren zu dessen betrieb |
DE102006023048C5 (de) * | 2006-05-17 | 2014-12-11 | Techem Energy Services Gmbh | Brandwarnmelder und Verfahren zur Überprüfung dessen Funktionsfähigkeit |
EP2839448B1 (de) | 2012-09-07 | 2015-07-22 | Amrona AG | Vorrichtung und verfahren zum detektieren von streulichtsignalen |
EP3029647A1 (de) | 2014-12-04 | 2016-06-08 | Siemens Schweiz AG | Offener Streulichtrauchmelder, insbesondere mit einer Sidelooker-LED |
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WO2008043451A3 (de) * | 2006-10-09 | 2008-05-29 | Schako Klima Luft | Vorrichtung zur erkennung von rauch in einem raum |
WO2008043451A2 (de) | 2006-10-09 | 2008-04-17 | Schako Klima Luft Ferdinand Schad Kg | Vorrichtung zur erkennung von rauch in einem raum |
DE102007013295A1 (de) | 2007-03-16 | 2008-09-18 | Aoa Apparatebau Gauting Gmbh | Rauchmelder |
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EP2839448B1 (de) | 2012-09-07 | 2015-07-22 | Amrona AG | Vorrichtung und verfahren zum detektieren von streulichtsignalen |
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EP3029647B1 (de) | 2014-12-04 | 2017-05-31 | Siemens Schweiz AG | Offener Streulichtrauchmelder, insbesondere mit einer Sidelooker-LED |
CN106248629A (zh) * | 2015-05-06 | 2016-12-21 | 西门子瑞士有限公司 | 开放式散射光烟雾检测器及用于该类型开放式散射光烟雾检测器的测试设备 |
EP3091517A1 (de) | 2015-05-06 | 2016-11-09 | Siemens Schweiz AG | Offener streulichtrauchmelder sowie prüfgerät für einen derartigen offenen streulichtrauchmelder |
US9905102B2 (en) | 2015-05-06 | 2018-02-27 | Siemens Schweiz Ag | Open scattered light smoke detector and testing device for an open scattered light smoke detector of this type |
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CN106248629B (zh) * | 2015-05-06 | 2019-02-22 | 西门子瑞士有限公司 | 开放式散射光烟雾检测器及用于该类型开放式散射光烟雾检测器的测试设备 |
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US11860092B2 (en) | 2018-03-26 | 2024-01-02 | Kidde Technologies, Inc. | Protective cover for chamberless point sensor |
DE102023203881A1 (de) | 2023-04-26 | 2024-10-31 | Hekatron Vertriebs Gmbh | Brandmelder und Vorrichtung zur Überwachung |
Also Published As
Publication number | Publication date |
---|---|
DE10066246A1 (de) | 2005-10-06 |
DE50103194D1 (de) | 2004-09-16 |
US20020080040A1 (en) | 2002-06-27 |
EP1191496B2 (de) | 2010-11-24 |
EP1191496B1 (de) | 2004-08-11 |
US6515589B2 (en) | 2003-02-04 |
ES2225374T3 (es) | 2005-03-16 |
ES2225374T5 (es) | 2011-04-08 |
ATE273545T1 (de) | 2004-08-15 |
TR200402201T4 (tr) | 2004-10-21 |
DE10046992C1 (de) | 2002-06-06 |
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