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EP1191496B2 - Détecteur de fumée à lumière dispersée - Google Patents

Détecteur de fumée à lumière dispersée Download PDF

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Publication number
EP1191496B2
EP1191496B2 EP01122157A EP01122157A EP1191496B2 EP 1191496 B2 EP1191496 B2 EP 1191496B2 EP 01122157 A EP01122157 A EP 01122157A EP 01122157 A EP01122157 A EP 01122157A EP 1191496 B2 EP1191496 B2 EP 1191496B2
Authority
EP
European Patent Office
Prior art keywords
light
scattering
smoke detector
smoke
receiver
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.)
Expired - Lifetime
Application number
EP01122157A
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German (de)
English (en)
Other versions
EP1191496B1 (fr
EP1191496A1 (fr
Inventor
Joachim Schneider
Anton Dr. Pfefferseder
Bernd Siber
Andreas Hensel
Ulrich Oppelt
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1191496A1 publication Critical patent/EP1191496A1/fr
Publication of EP1191496B1 publication Critical patent/EP1191496B1/fr
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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
    • 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 relates to a scattered light smoke detector according to the preamble of the independent claim.
  • the European Patent Application EP 0 472 039 A2 discloses a method and apparatus for detecting fire by measuring the transit time and / or the intensity of electromagnetic radiation.
  • the scattered light smoke detector according to the invention with the features of the independent claim has the advantage that a distinction between permanent foreign bodies in the scattering point of the scattered light smoke detector and actual smoke is possible.
  • Such foreign bodies may e.g. Ladders that are turned off for crafting or boxes that are stacked high to be ceiling. Even spiders can build their network in narrow shafts in the free space of the scattered light smoke detector and by chance remain permanently in the scattering point of the scattered light smoke detector.
  • the scattered light smoke detector according to the invention recognizes such foreign bodies and eliminates them from the measuring signals, so that false fire messages are avoided.
  • the means for distinguishing between smoke and other foreign bodies have a processor for analyzing the time course of received signals of the light receiver, wherein the processor is connected to the light receiver. Based on the time course, it is advantageously possible to determine whether smoke or another foreign body is present in the scattered light smoke detector.
  • smoke an increasing intensity of the scattered light signal is registered with increasing time, while when a foreign body penetrates into the scattering point, a kind of jump function occurs in the short term, in order then to switch back to a fixed signal.
  • This distinction in terms of a jump in the time function thus makes it easy to distinguish between smoke and another foreign body.
  • an existing scattered light smoke detector only has to be supplemented by software that performs this temporal analysis of the received signal from the light receiver.
  • the scattered light detector according to the invention can be realized in a simple manner.
  • optics preferably a facet mirror
  • the total signal at the light receiver is the integral of the signals from all scattering areas in this area.
  • facet mirrors By means of suitable facet mirrors, it is possible to detect many spatially separated scattering areas in which the detector reacts sensitively to scattered light. In the presence of smoke, it can be assumed that all scattering areas deliver substantially homogeneous with the corresponding smoke density a proportion of the scattered light signal, while a spider locally scatters a partial signal onto the receiver. With such an arrangement, a spider can be distinguished from smoke by simple amplitude comparison.
  • the light receiver is designed as a photoreceiver array, wherein the photoreceiver array has at least two photoreceiver elements.
  • the photoreceiver array has at least two photoreceiver elements.
  • the scattered light smoke detector form such that a distinction between smoke and other foreign bodies is possible, is the formation of the light source with adjustable wavelength.
  • the effect is advantageously exploited that in the Rayleigh scattering, the scattering behavior of the wavelength of the radiation is dependent.
  • the scattering does not or only slightly depends on the wavelength, therefore, when tuning the light emitter no significant effect on the scatter signals will occur.
  • this effect is the intensity variation in Dependent on the wavelength clearly measurable.
  • This distinction is then carried out by a processor in the scattered light smoke detector according to the invention.
  • the light transmitter is connected to an amplitude modulator. Due to the phase shift between transmitted and received signals, amplitude-modulated light signals enable the determination of the distance from the scattering object due to the phase shift, while a pulse broadening, ie a dispersion, is a measure of a diffuse scattering body, as it is especially a cloud of smoke. Thus, it is thus advantageously possible that, depending on the pulse broadening, it can be determined whether smoke or another foreign body is present.
  • the scattered light smoke detector comprises an ultrasonic sensor, wherein the ultrasonic sensor has a transmitter and a receiver and wherein the ultrasonic sensor is arranged such that the ultrasonic sensor monitors the area around the scattering point.
  • the ultrasonic sensor thus advantageously monitors the optical scattering range of the scattered light detector. If there is a solid foreign body in the scattering area, the ultrasonic sensor and the scattered light sensor receives a signal. If there is smoke in the scattering point, only the scattered light sensor receives a signal but not the ultrasonic sensor.
  • Particularly suitable for this method are ultrasonic sensors operating in the megahertz range, since these ultrasonic sensors have a very good directivity. With the aid of the ultrasonic sensor, it is further advantageously detectable whether a foreign body is located in an area around the smoke detector, which possibly means influencing the flow conditions for fire detection. This can be issued as a warning from the control panel.
  • FIG. 1 shows a first embodiment of the scattered light smoke detector according to the invention
  • FIG. 2 a second embodiment of the scattered light smoke detector according to the invention with a facet mirror
  • FIG. 3 A third embodiment of the scattered light smoke detector according to the invention with a photoreceptor arrays
  • FIG. 4 A fourth embodiment of the scattered light smoke detector according to the invention with an amplitude modulator
  • FIG. 5 a fifth embodiment of the scattered light smoke detector according to the invention with an ellipsoid
  • FIG. 6 an amplitude modulated optical signal for determining a distance
  • FIG. 7 amplitude modulated optical signals for identifying a cloud of smoke
  • FIG. 8 the scattered light smoke detector according to the invention with an ultrasonic detection for foreign bodies.
  • Stray light smoke detectors used as fire detectors have the advantage of being independent of sources of spurious light, dust, pollution, insects, short-term smoke, and momentarily introduced debris at the point of measurement, e.g. Cleaning equipment, to be.
  • Longer-term smoke, as they occur in a fire provide in the scattered light smoke detector for a significant scatter signal, which is recognized as a fire detection signal, for example by comparison with a predetermined threshold.
  • the scattered light smoke detector will functionally issue a fire alarm.
  • a scattered light smoke detector is proposed, which has means to distinguish between smoke and other foreign bodies.
  • such means relate to a processor which analyzes the time course of received signals of the light receiver.
  • FIG. 1 a first embodiment of the scattered light smoke detector according to the invention is shown as a block diagram.
  • a cover 3 protects the scattered light smoke detector from moisture, aggressive gases and mechanical damage.
  • the cover 3 is formed as a transparent plastic.
  • the cover 3 is such that it is transparent to the light for the scattered light measurement. It can also act as a filter for unwanted spurious radiation. In particular, when infrared radiation is used, the ambient light is easily filterable through the cover 3 and the light receiver 2.
  • Behind the cover 3 is on the one hand a light transmitter 1, here a light emitting diode in the infrared range.
  • a laser preferably a semiconductor laser, and / or other wavelength ranges is possible, which is controlled by a transmitter drive 5.
  • the transmitter drive 5 is thus a driver circuit for the light transmitter 1.
  • the drive 5 is connected via a second output to a processor 7.
  • the processor 7 is connected via a data input / output to a memory 8 in which fixedly stored reference signals are stored and which is used to store intermediate values.
  • the processor 7 is connected to a reception evaluation 6.
  • the processor 7 is connected to a signaling device 9.
  • An input of the reception evaluation 6 is connected to a light receiver 2.
  • the light receiver 2 is here a photodiode.
  • the light emitting diode 1 and the photodiode 2 are arranged such that a scattering point 4 outside the scattered light smoke detector is outdoors.
  • the reception evaluation 6 is here a reception amplifier and an analog / digital conversion.
  • the signaling device 9 may be a lamp, a siren or a communication module, which transmits a signaling to a central, preferably via a bus. This is particularly advantageous when multiple scattered light smoke detectors are used, which are connected via the bus to the control center to perform a central monitoring of a building.
  • the processor 7 now performs a time course analysis of the received signals of the photodiode 2. If smoke occurs in the scattering point 4, this leads to a continuous increase in the intensity of the received scattered light by the photodiode 2. However, if a foreign body is introduced into the scattering point 4, then a jump in the time course of the intensity function is when introducing the foreign body into the scattering point 4 the received signals through the photodiode 2 take place, then to cause after the introduction and the retention of the foreign body in the scattering point 4 again a flat signal plateau. A brief appearance of a foreign object in the scattering point 4 causes a short pulse in the reception function of the leakage signals and is thus recognized as a signal which is not used for alarm triggering.
  • FIG. 2 a second embodiment of the scattered light smoke detector according to the invention is shown, wherein around the light receiver 2, a facet mirror of two concave mirrors (concave mirror segments) 10 and 11 is attached.
  • the concave mirrors 10 and 11 collect light from a region around their own scattering point and couple it into the light receiver 2.
  • the scattering point (s) strictly speaking, are volume areas where the light lobe of the radiation source and the receiving lobe of the light receiver intersect.
  • two scatter points since there are two intersections for the optical axes of the two mirrors 10 and 11 and the optical axis of the light emitter 1.
  • the light receiver 2 is therefore sensitive all around, so that the light receiver 2 is now composed of a plurality of diodes, which can receive light from different directions.
  • the cover 3 in turn protects the scattered light smoke detector from external attacks.
  • the light receiver 2 is connected via its output to the reception evaluation 6, which is connected via its data output to the processor 7.
  • the processor 7 is connected to the memory 8 via a data input / output. Via a data output, the processor 7 is connected to the signaling device 9.
  • the transmitter drive 5 is connected to a second data input of the processor 7.
  • a second output of the transmitter drive 5 leads to the light transmitter 1, which is again a light-emitting diode here. Furthermore, a laser can be used here.
  • the integral of the detected scattering areas is formed by the light receiver 2.
  • all scattering areas deliver a fraction of the scattered light signal substantially homogeneously with the corresponding smoke density, whereas a spider only locally scatters a partial signal onto the receiver.
  • a spider can be distinguished as a foreign body of smoke.
  • the evaluation can be carried out in particular by an evaluation of the time signal. Smoke gives a continuous signal, while an insect as an example of a foreign body generates a signal jump when leaving and entering each segment. An insect would thus generate a pulse train as it traversed the spreading area.
  • a threshold value in the memory 8 is then provided, which specifies a threshold for the amplitude, from which the smoke is recognized as detected.
  • a spider would give a signal that is below the threshold. The threshold is determined based on experimental data.
  • FIG. 3 a third embodiment of the Sreulichtrauchmelders invention is shown.
  • the cover 3 again protects the scattered light smoke detector against external attacks.
  • the light transmitter 1 is connected via its input to the transmitter drive 5.
  • the transmitter drive 5 is connected to the processor 7 via a second output.
  • the processor 7 is connected to the memory 8 via a data input / output.
  • To a second data input of the processor 7, a photo receiver array evaluation 13 is connected to a data output of the processor 7, a signaling device 9 is connected.
  • the photoreceiver array evaluation 13 is connected via its input to a photoreceiver array 12.
  • the photoreceiver array 12 consists of a field of photodiodes.
  • a lens 14 is disposed between the cover 3 and the photoreceptor array 12. The lens 14 is arranged such that the photodiodes of the photoreceiver array 12 detect a plurality of location areas around the scattering point 4.
  • CCD Charge Coupled Device
  • the photoreceiver array evaluation 13 queries the individual signals of the photodiodes and digitizes them, in order to then transmit them to the processor 7, which thus performs a spatial resolution of the received signals to the scattering point 4. This makes it possible to measure not only the integral of the received signals from the area around the scattering point 4, but to record with the lens 14 a spatial distribution of the signals.
  • two spatial regions which are detected by the photoreceiver diode array 12 are represented by the beams 15, 16, 17 and 18. This spatial resolution makes it possible to clearly differentiate between smoke, which will be homogeneous, small animals that appear only in individual areas, and objects.
  • the received intensity signal between two photodiodes of the photoreceptor array will cause a jump in the received light intensity. Furthermore, it is possible that when introducing an object several photodiodes of the photoreceiver array are traversed and thereby at a time interval, a typical signal pattern is produced, which suggests the introduction of an object in the stray field of the scattered light smoke detector.
  • FIG. 4 a fourth embodiment of the scattered light smoke detector according to the invention is shown.
  • the cover 3 in turn protects the scattered light smoke detector against external interference.
  • the light transmitter 1 is connected via its input to an amplitude modulator 19.
  • a data output of the amplitude modulator 19 leads to a first data input of the processor 7.
  • the transmitter drive 5 is connected to a data input of the amplitude modulator 19.
  • a second output of the transmitter drive 5 leads to a second data input of the processor 7.
  • the processor 7 is connected via its third data input to the receiver evaluation 6.
  • the processor 7 is connected to the memory 8 via a data input / output. Via a data output of the processor 7, the signaling device 9 is connected.
  • At an input of the receiver evaluation 6 of the light receiver 2 is connected.
  • the light emitter 1 and the light receiver 2 are arranged so that the scattering point 4 is outside of the scattered light smoke detector outdoors.
  • the amplitude modulator 19 forms a pulse train from the electrical signal of the transmitter drive 5 and thereby performs an amplitude modulation. In the simplest form, this is simply a switch, so that a sequence of periodic light pulses is generated in the light emitter 1 and then again a blanking is performed and this alternately in a clock, the amplitude modulator 19 dictates.
  • the processor 7 evaluates the received signals in comparison to these transmitted signals, which the amplitude modulator 19 transmits directly to the processor 7. As a result, the processor 7 is able, on the one hand, to carry out a distance determination based on the phase shift between the transmitted and the received pulses and, on the other hand, to check whether it is a cloud of smoke or an object. If nothing is found in the scattering point 4 out of air, no signals are scattered and the receiver 2 receives only ambient light, which can be excreted by appropriate choice of the light wavelength or the light wavelength range and a (electronic) Gleichlichtunterdrückung.
  • FIG. 6 It is shown how pulse trains that have been sent and that have been received differ in phase.
  • FIG. 6a is the transmitted pulse sequence shown by the arrow 21, falls on the reflection plane 22.
  • FIG. 6b the received pulse sequence is shown. It can be seen by a time comparison that the phase shift 23 has occurred. The phase shift 23 is a measure of the distance from the light emitter and receiver to the reflection plane 22.
  • Figure 7a is again shown a transmitted pulse train that hits a cloud of smoke 25.
  • the received pulse train is represented by the cloud of smoke 25.
  • the width of the received pulses in FIG. 7b is a measure of whether smoke is present or not. This can be determined by means of a threshold value comparison by the processor 7. This threshold value is then specified and stored in the memory 8.
  • a tunable wavelength light source as the light emitter 1.
  • an infrared tunable semiconductor laser tuned through a predetermined wavelength range can be used to detect whether the scattered light signals are dependent on the wavelength. This scattering is called Rayleigh scattering. For small particles, as they occur in a cloud of smoke, this Rayleigh scattering is wavelength-dependent.
  • the processor 7 is thus informed via the transmitter control 5 about the currently used wavelength, in order then to analyze the received signals as a function of the transmission wavelength. If this function results in a horizontal or an approximately horizontal, then an object has been introduced into the scattering point 4, since large objects, which are in particular large compared to the wavelength used, have no intensity dependence on the wavelength. For a clear detection is possible, whether a foreign body or smoke in the area around the scattering point 4 is present.
  • a lamp which emits light at several wavelengths and then to select these individual wavelengths via a filter.
  • FIG. 5 a fifth embodiment of the scattered light smoke detector according to the invention is shown.
  • the cover 3 again protects the scattered light smoke detector against external interference.
  • the light transmitter 1 is connected via its input to the transmitter drive 5, wherein the transmitter drive 5 is connected via a data output to a first data input of the processor 7.
  • the processor 7 is connected to the memory 8 via a data input / output. Via a second data input, the processor 7 is connected to the reception evaluation 6.
  • To a data output of the processor 7, the signaling device 9 is connected.
  • the light receiver 2 is connected to an input of the receiver evaluation 6.
  • an ellipsoid 20 is arranged, which ensures that as much scattered light is coupled into the light receiver 2. This improves the signal-to-noise ratio of the scattered light smoke detector.
  • An alternative method is that a stronger light emitter 1 is used.
  • Fig. 8 the scattered light smoke detector according to the invention is shown with an ultrasonic detection.
  • the light emitter 1 and the light receiver 2 are arranged so that the scattering point 4 is outside of the scattered light smoke detector outdoors.
  • the cover 3 protects the scattered light smoke detector from external attacks.
  • the ultrasonic receiver is aligned with the scattering point 4, on which an ultrasonic transmitter 26 is aligned.
  • the ultrasonic transmitter is operated either in continuous operation or in periodic periods.
  • the reception evaluation 6 is connected.
  • a signaling 9 is connected.
  • the processor 7 is connected to the memory 8 via a data input.
  • At an input of the reception evaluation 6 of the light receiver 2 is connected.
  • the processor 7 based on the received signal from the signal processing 28, which amplifies the received signals from the ultrasonic receiver 27 and digitizes that it is a foreign body and not smoke, which causes the scatter signals that the light receiver 2 receives.
  • the received optical signal is monitored by the ultrasonic reception signal. If it is smoke that causes the scattering signals in the scattering point 4, then receives the ultrasonic receiver no signal received. Ultrasonic waves offer the possibility to specifically sound an area, so that false signals are unlikely.
  • the function of an ultrasonic transmitter and receiver can also be integrated in one component. It is first emitted an ultrasonic pulse. Then you switch to reception and wait for the reflected signal from any existing object (echo mode).

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

Claims (9)

  1. Détecteur de fumée à lumière diffusée, le détecteur de fumée à lumière diffusée présentant un émetteur de lumière (1) et un récepteur de lumière (2) qui sont disposés de telle sorte que le point de diffusion (4) de l'émetteur de lumière (1) et du récepteur de lumière (2) se trouve dans l'espace libre en-dehors du détecteur de fumée à lumière diffusée, le détecteur de fumée à lumière diffusée présentant un capot (3) pour protéger l'émetteur de lumière et le récepteur de lumière (2) et des moyens (7) pour faire la différence entre la fumée et d'autres corps étrangers qui se trouvent dans une région autour du point de diffusion (4), le capot (3) étant réalisé en matière plastique transparente, les moyens pour faire la différence entre la fumée et d'autres corps étrangers présentant un processeur (7) pour analyser l'évolution dans le temps des signaux reçus du récepteur de lumière (2), le processeur (7) pouvant être raccordé au récepteur de lumière (2).
  2. Détecteur de fumée à lumière diffusée selon la revendication 1, caractérisé en ce que les moyens pour faire la différence entre la fumée et d'autres corps étrangers présentent une optique (10, 11) sur le récepteur de lumière (2), laquelle injecte dans le récepteur de lumière (2) les signaux diffusés en provenance de plusieurs zones de diffusion dans une région autour du point de diffusion (4).
  3. Détecteur de fumée à lumière diffusée selon la revendication 2, caractérisé en ce que l'optique est réalisée sous la forme d'un miroir à facettes (10, 11).
  4. Détecteur de fumée à lumière diffusée selon la revendication 1, 2 ou 3, caractérisé en ce que le récepteur de lumière est réalisé sous la forme d'un réseau de photorécepteurs (12), le réseau de photorécepteurs (12) présentant au moins deux éléments photorécepteurs.
  5. Détecteur de fumée à lumière diffusée selon la revendication 4, caractérisé en ce qu'un système de lentille (14) est disposé devant le réseau de photorécepteurs (12).
  6. Détecteur de fumée à lumière diffusée selon la revendication 1, 2, 3, 4 ou 5, caractérisé en ce que l'émetteur de lumière (1) est réalisé sous la forme d'une source de lumière ajustable, la source de lumière ajustable émettant de la lumière avec une longueur d'onde variable en fonction des signaux de commande d'une commande d'émetteur (5).
  7. Détecteur de fumée à lumière diffusée selon l'une des revendications 1 à 6, caractérisé en ce que l'émetteur de lumière (1) peut être relié avec un modulateur d'amplitude (19).
  8. Détecteur de fumée à lumière diffusée selon l'une des revendications 1 à 6, caractérisé en ce que le détecteur de fumée à lumière diffusée présente un capteur à ultrasons, le capteur à ultrasons présentant un émetteur d'ultrasons et un récepteur d'ultrasons et que le capteur à ultrasons est disposé de telle sorte que le capteur à ultrasons surveille la région autour du point de diffusion (4).
  9. Détecteur de fumée à lumière diffusée selon la revendication 8, caractérisé en ce que le capteur à ultrasons peut fonctionner en mode écho.
EP01122157A 2000-09-22 2001-09-15 Détecteur de fumée à lumière dispersée Expired - Lifetime EP1191496B2 (fr)

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 EP1191496A1 (fr) 2002-03-27
EP1191496B1 EP1191496B1 (fr) 2004-08-11
EP1191496B2 true EP1191496B2 (fr) 2010-11-24

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ID=7657231

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EP01122157A Expired - Lifetime EP1191496B2 (fr) 2000-09-22 2001-09-15 Détecteur de fumée à lumière dispersée

Country Status (6)

Country Link
US (1) US6515589B2 (fr)
EP (1) EP1191496B2 (fr)
AT (1) ATE273545T1 (fr)
DE (3) DE10046992C1 (fr)
ES (1) ES2225374T5 (fr)
TR (1) TR200402201T4 (fr)

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ES2225374T5 (es) 2011-04-08
US6515589B2 (en) 2003-02-04
EP1191496B1 (fr) 2004-08-11
ES2225374T3 (es) 2005-03-16
DE10046992C1 (de) 2002-06-06
US20020080040A1 (en) 2002-06-27
ATE273545T1 (de) 2004-08-15
DE10066246A1 (de) 2005-10-06
EP1191496A1 (fr) 2002-03-27
TR200402201T4 (tr) 2004-10-21

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