EP1475761A1 - Device for visually inspecting a smoke detector located in an aircraft - Google Patents

Device for visually inspecting a smoke detector located in an aircraft Download PDF

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Publication number
EP1475761A1
EP1475761A1 EP04008031A EP04008031A EP1475761A1 EP 1475761 A1 EP1475761 A1 EP 1475761A1 EP 04008031 A EP04008031 A EP 04008031A EP 04008031 A EP04008031 A EP 04008031A EP 1475761 A1 EP1475761 A1 EP 1475761A1
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EP
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Prior art keywords
smoke detector
air pressure
smoke
pressure sensor
inlet opening
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Granted
Application number
EP04008031A
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German (de)
French (fr)
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EP1475761B1 (en
Inventor
Axel Bobenhausen
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Airbus Operations GmbH
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Airbus Operations GmbH
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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
    • 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
    • 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
    • G08B29/046—Monitoring of the detection circuits prevention of tampering with detection circuits

Definitions

  • the invention relates to a device for visual Inspection of an arranged in an airplane Smoke detector, preferably in the exhaust duct an aircraft toilet is used, wherein the Smoke detector through obstacles, in particular Covers, adhesions or the like, on his Entry opening or at a designated Protective grid in its function restricted or is prevented.
  • the invention is therefore based on the object, a To provide device of the type mentioned, through which a permanent monitoring of Smoke detectors for possible blockages or tampering is automatically enabled.
  • the object is achieved in that at least two air pressure sensors near the Smoke detector are arranged, due to a Cover the smoke detector and / or the Protective grille occurring air pressure differences and that the air pressure sensors have an evaluation and display means for detecting and displaying restricting the function of the smoke detector Is subordinate to obstacles.
  • a Detected blockage of a smoke detector can in advantageously locally, in the aircraft cabin or be displayed outside the affected room or also be communicated to a centralized maintenance system.
  • Near the smoke detector 7 are located a total of three air pressure sensors 1, 2 and 3, of which the first in the toilet room 4, the second at the Inner wall 8a of the suction hood 8 and the third im Smoke detector 7 is arranged.
  • Each two of the air pressure sensors 1, 2 or 3 detect Air pressure differences due to a cover of the Smoke detector 7, in particular his Smoke inlet opening 7a, and / or the Protective grid 6 occur, which is Gluing or the like can act.
  • an evaluation and Display device for determining and displaying the Smoke detector 7 in its function restrictive Downstream of obstacles. For example, a Obstacle on the upstream of the smoke detector 7 Protective grille 6 through the front of the inlet opening 7a the smoke detector 7 arranged air pressure sensor 2 and the air pressure sensor 1 located in the monitored room determined.
  • Such an obstacle can also by the in the smoke detector 7 arranged air pressure sensor 3 and the air pressure sensor located in the monitored room 4 1 are determined.
  • the smoke detector 7 shown in Fig. 2 has next his smoke inlet 7a and a Smoke outlet 7b on. Both openings is one Pipe upstream, namely the smoke inlet 7a, the pipe 10 and the smoke outlet opening 7b Pipe 11. While the pipe 11 is a normal smoke outlet pipe with two frontal Is openings, the tube 10 is additionally with a Variety of holes in its pipe wall provided by which also a smoke entering the pipe across its pipe wall is made possible. Through, the pipes 10 and 11 containing pipe system is the Smoke detector 7 via its smoke inlet 7a a Smoke volume supplied, compared to that of FIG. 1 apparent smoke detector 7 is substantially increased. If the tube 10 by covers, gluing or The like can be blocked by the forming air pressure difference with the Air pressure sensors 1 and 2 in the manner described above be determined.
  • the device is also suitable for one application Aircraft cargo space for detection and prevention of provided by charge smoke detectors 7.

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

Abstract

A device for visual inspection of a smoke detector positioned in an aircraft, and preferably located in the air extraction duct of an aircraft toilette, the smoke detector being functionally restricted by obstacles such as coverings, moldings etc at its entrance aperture or at a protective grating. At least two air-pressure sensors (1-3) are positioned in the vicinity of the smoke detector (7) which detect air-pressure differences occurring on the basis of a cover of the smoke detector (7) and/or of the protective grating (6), and an evaluating- and display-device is subordinated to the air-pressure sensors for determining and displaying the obstacles restricting the functioning of the smoke detector (7).

Description

Die Erfindung betrifft eine Vorrichtung zur visuellen Inspektion eines in einem Flugzeug angeordneten Rauchdetektors, der vorzugsweise in dem Abluftkanal einer Flugzeugtoilette Anwendung findet, wobei der Rauchdetektor durch Hindernisse, wie insbesondere Abdeckungen, Verklebungen oder dergleichen, an seiner Eintrittsöffnung oder an einem vorgesehenen Schutzgitter in seiner Funktion eingeschränkt bzw. gehindert wird.The invention relates to a device for visual Inspection of an arranged in an airplane Smoke detector, preferably in the exhaust duct an aircraft toilet is used, wherein the Smoke detector through obstacles, in particular Covers, adhesions or the like, on his Entry opening or at a designated Protective grid in its function restricted or is prevented.

Derzeit ist es in allen Flugzeugen, die mit Rauchwarneinrichtungen ausgerüstet sein müssen, notwendig, in den zugänglichen Bereichen wie beispielsweise Toiletten, Mannschaftsruheräumen oder dergleichen regelmäßig visuelle Inspektionen der Rauchsensoren durch die Flugzeugbesatzung durchführen zu lassen. Dieses erfolgt bei Langstreckenflügen etwa alle 15 Minuten und bedeutet, dass eine Überprüfung dahin erfolgt, ob die Rauchdetektoren oder zugeordnete Lüftungszugänge verklebt bzw. abgedeckt sind. Es wird somit bisher durch eine reine visuelle Kontrolle festgestellt, ob Rauchdetektoren im Flugzeug durch vorhandene Hindernisse abgedeckt bzw. zugestellt sind und somit lediglich eine eingeschränkte oder gar keine Funktion von Rauchmeldern gegeben ist. In Bereichen, in denen ungefilterte Luft verwendet wird, können sich solche Blockierungen in nachteiliger Weise sehr schnell aufbauen.Currently it is in all aircraft with Smoke alarm devices must be equipped, necessary in the accessible areas like For example, toilets, team rest rooms or like regular visual inspections of the Carry out smoke sensors by the flight crew allow. This is done on long-haul flights about every 15 minutes and that means a review This is done whether the smoke detectors or associated Ventilation accesses are glued or covered. It will thus far by a pure visual control determined whether smoke detectors in the plane through existing obstacles are covered or delivered and thus only a limited or no Function of smoke detectors is given. In areas, in where unfiltered air is used can get such blocks disadvantageously very quickly build up.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, durch welche eine permanente Überwachung von Rauchdetektoren im Hinblick auf eventuelle Blockaden oder Manipulationen automatisch ermöglicht wird.The invention is therefore based on the object, a To provide device of the type mentioned, through which a permanent monitoring of Smoke detectors for possible blockages or tampering is automatically enabled.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, dass mindestens zwei Luftdrucksensoren in der Nähe des Rauchdetektors angeordnet sind, die aufgrund einer Abdeckung des Rauchdetektors und / oder des Schutzgitters auftretende Luftdruckunterschiede erfassen, und dass den Luftdrucksensoren eine Auswerte- und Anzeigeeinrichtung zur Ermittlung und Anzeige von den Rauchdetektor in seiner Funktion einschränkenden Hindernissen nachgeordnet ist.The object is achieved in that at least two air pressure sensors near the Smoke detector are arranged, due to a Cover the smoke detector and / or the Protective grille occurring air pressure differences and that the air pressure sensors have an evaluation and display means for detecting and displaying restricting the function of the smoke detector Is subordinate to obstacles.

Erfindungsgemäße weiterbildungen der Vorrichtung sind in den Unteransprüchen 2 bis 10 beschrieben.Inventive developments of the device are described in the subclaims 2 to 10.

Es wird in vorteilhafter Weise eine technische Möglichkeit realisiert, die es permanent erlaubt, festzustellen, dass eine Detektion von Rauch in einem Flugzeug durch eine Blockade der Rauchdetektoren eingeschränkt bzw. verhindert wird. Ein wesentlicher Vorteil der Erfindung besteht auch darin, dass durch Betätigungszeiträume eine Fehlreaktion im Falle von kurzfristigen Druckschwankungen, wie z. B. im Falle einer Vakuumtoilette, verhindert werden können. Eine festgestellte Blockade eines Rauchdetektors kann in vorteilhafter Weise lokal, in der Flugzeugkabine oder außerhalb des betroffenen Raumes angezeigt werden bzw. auch einem zentralen Wartungssystem mitgeteilt werden.It is advantageously a technical Realized possibility that allows it permanently, determine that a detection of smoke in one Airplane by a blockade of smoke detectors is restricted or prevented. An essential Advantage of the invention is also that by Operating periods a malfunction in the case of short-term pressure fluctuations, such. In the case a vacuum toilet, can be prevented. A Detected blockage of a smoke detector can in advantageously locally, in the aircraft cabin or be displayed outside the affected room or also be communicated to a centralized maintenance system.

In der Zeichnung ist ein Ausführungsbeispiel nach der Erfindung dargestellt, und zwar zeigt:

Fig. 1:
einen in einer Flugzeugtoilette angeordneten Rauchdetektor, dem insgesamt drei Luftdrucksensoren zugeordnet sind,
und
Fig. 2:
einen Rauchdetektor mit zwei Luftdrucksensoren und einem Rohrsystem, wobei ein Rohr des Systems der Raucheintrittsöffnung und ein weiteres Rohr der Rauchaustrittsöffnung des Rauchdetektors zugeordnet ist.
In the drawing, an embodiment of the invention is shown, namely shows:
Fig. 1:
a smoke detector arranged in an aircraft toilet, to which a total of three air pressure sensors are assigned,
and
Fig. 2:
a smoke detector with two air pressure sensors and a pipe system, wherein a pipe of the system of the smoke inlet opening and a further tube of the smoke outlet opening of the smoke detector is assigned.

In Fig. 1 weist ein Toilettenraum 4 in einem zeichnerisch nicht dargestellten Flugzeug eine Decke 5 auf, in der ein Schutzgitter 6 eingearbeitet ist. Oberhalb des Schutzgitters 6 bzw. der Decke 5 ist ein Rauchdetektor 7 mit zugehöriger Raucheintrittsöffnung 7a befestigt, und zwar an der Innenwand 8a einer Absaughaube 8 eines Abluftkanals 9 des Toilettenraumes 4. In der Nähe des Rauchdetektors 7 befinden sich insgesamt drei Luftdrucksensoren 1, 2 und 3, von denen der erste im Toilettenraum 4, der zweite an der Innenwand 8a der Absaughaube 8 sowie der dritte im Rauchdetektor 7 angeordnet ist.In Fig. 1, a toilet room 4 in a drawing aircraft, not shown, a blanket 5 on, in which a protective grid 6 is incorporated. Above the protective grid 6 and the ceiling 5 is a Smoke detector 7 with associated smoke inlet 7a fixed, on the inner wall 8a of a Extraction hood 8 an exhaust duct 9 of the toilet room 4. Near the smoke detector 7 are located a total of three air pressure sensors 1, 2 and 3, of which the first in the toilet room 4, the second at the Inner wall 8a of the suction hood 8 and the third im Smoke detector 7 is arranged.

Jeweils zwei der Luftdrucksensoren 1, 2 oder 3 erfassen Luftdruckunterschiede, die aufgrund einer Abdeckung des Rauchdetektors 7, insbesondere seiner Raucheintrittsöffnung 7a, und / oder des Schutzgitters 6 auftreten, wobei es sich um Verklebungen oder dergleichen handeln kann. Um diese Hindernisse zu erkennen, die den Rauchdetektor 7 in seiner Funktion einschränken oder gar verhindern, ist den Luftdrucksensoren 1, 2 und 3 eine Auswerte- und Anzeigeeinrichtung zur Ermittlung und Anzeige von den Rauchdetektor 7 in seiner Funktion ein-schränkenden Hindernissen nachgeordnet. Beispielsweise wird ein Hindernis an dem, dem Rauchdetektor 7 vorgelagerten Schutzgitter 6 durch den vor der Eintrittsöffnung 7a des Rauchdetektors 7 angeordneten Luftdrucksensor 2 und den im überwachten Raum befindlichen Luftdrucksensor 1 ermittelt. Ein derartiges Hindernis kann auch durch den im Rauchdetektor 7 angeordneten Luftdrucksensor 3 und den im überwachten Raum 4 befindlichen Luftdrucksensor 1 ermittelt werden. Hingegen wird ein die Eintrittsöffnung 7a des Rauchdetektors 7 blockierendes Hindernis durch den im überwachten Raum 4 angeordneten Luftdrucksensor 3 und den vor Eintrittsöffnung 7a des Rauchdetektors 7 angeordneten Luftdrucksensor 2 ermittelt.Each two of the air pressure sensors 1, 2 or 3 detect Air pressure differences due to a cover of the Smoke detector 7, in particular his Smoke inlet opening 7a, and / or the Protective grid 6 occur, which is Gluing or the like can act. Around To detect obstacles that the smoke detector 7 in restrict or even prevent its function the air pressure sensors 1, 2 and 3 an evaluation and Display device for determining and displaying the Smoke detector 7 in its function restrictive Downstream of obstacles. For example, a Obstacle on the upstream of the smoke detector 7 Protective grille 6 through the front of the inlet opening 7a the smoke detector 7 arranged air pressure sensor 2 and the air pressure sensor 1 located in the monitored room determined. Such an obstacle can also by the in the smoke detector 7 arranged air pressure sensor 3 and the air pressure sensor located in the monitored room 4 1 are determined. On the other hand, the one Inlet opening 7a of the smoke detector 7 blocking Obstacle through the arranged in the monitored space 4 Air pressure sensor 3 and the front of the inlet opening 7 a of Smoke detector 7 arranged air pressure sensor. 2 determined.

Der in Fig. 2 dargestellte Rauchdetektor 7 weist neben seiner Raucheintrittsöffnung 7a auch eine Rauchaustrittsöffnung 7b auf. Beiden Öffnungen ist ein Rohr vorgeschaltet, und zwar der Raucheintrittsöffnung 7a das Rohr 10 und der Rauchaustrittsöffnung 7b das Rohr 11. Während es sich bei dem Rohr 11 um ein normales Rauchaustrittsrohr mit zwei stirnseitigen Öffnungen handelt, ist das Rohr 10 zusätzlich mit einer Vielzahl von Löchern in seiner Rohrwand versehen, durch welche auch ein Raucheintritt in das Rohr quer zu seiner Rohrwand ermöglicht wird. Durch ein, die Rohre 10 und 11 enthaltendes Rohrsystem wird dem Rauchdetektor 7 über seine Raucheintrittsöffnung 7a ein Rauchumfang zugeführt, der gegenüber dem aus Fig. 1 ersichtlichen Rauchdetektor 7 wesentlich erhöht ist. Wird das Rohr 10 durch Abdeckungen, verklebungen oder dergleichen blockiert, so kann dieser Umstand durch den sich bildenden Luftdruckunterschied mit den Luftdrucksensoren 1 und 2 in oben beschriebener Weise ermittelt werden.The smoke detector 7 shown in Fig. 2 has next his smoke inlet 7a and a Smoke outlet 7b on. Both openings is one Pipe upstream, namely the smoke inlet 7a, the pipe 10 and the smoke outlet opening 7b Pipe 11. While the pipe 11 is a normal smoke outlet pipe with two frontal Is openings, the tube 10 is additionally with a Variety of holes in its pipe wall provided by which also a smoke entering the pipe across its pipe wall is made possible. Through, the pipes 10 and 11 containing pipe system is the Smoke detector 7 via its smoke inlet 7a a Smoke volume supplied, compared to that of FIG. 1 apparent smoke detector 7 is substantially increased. If the tube 10 by covers, gluing or The like can be blocked by the forming air pressure difference with the Air pressure sensors 1 and 2 in the manner described above be determined.

Die Vorrichtung ist auch für eine Anwendung in einem Flugzeugfrachtraum zur Erkennung und Verhinderung von durch Ladung zugestellten Rauchdetektoren 7 vorgesehen.The device is also suitable for one application Aircraft cargo space for detection and prevention of provided by charge smoke detectors 7.

Claims (10)

Vorrichtung zur visuellen Inspektion eines in einem Flugzeug angeordneten Rauchdetektors, der vorzugsweise in dem Abluftkanal einer Flugzeugtoilette Anwendung findet, wobei der Rauchdetektor durch Hindernisse, wie insbesondere Abdeckungen, Verklebungen oder dergleichen, an seiner Eintrittsöffnung oder an einem vorgesehenen Schutzgitter in seiner Funktion eingeschränkt bzw. gehindert wird, dadurch gekennzeichnet, dass mindestens zwei Luftdrucksensoren (1, 2, 3) in der Nähe des Rauchdetektors (7) angeordnet sind, die aufgrund einer Abdeckung des Rauchdetektors (7) und / oder des Schutzgitters (6) auftretende Luftdruckunterschiede erfassen, und dass den Luftdrucksensoren (1, 2, 3) eine Auswerte- und Anzeigeeinrichtung zur Ermittlung und Anzeige von, den Rauchdetektor (7) in seiner Funktion einschränkenden Hindernissen nachgeordnet ist.Device for visually inspecting a smoke detector located in an aircraft, which is preferably used in the exhaust duct of an aircraft toilet, wherein the smoke detector in its function by obstacles, such as in particular covers, adhesives or the like, at its inlet opening or on a protective grille limited or prevented in its function is characterized in that at least two air pressure sensors (1, 2, 3) in the vicinity of the smoke detector (7) are arranged, which detect due to a cover of the smoke detector (7) and / or the protective grid (6) occurring air pressure differences, and that the air pressure sensors (1, 2, 3) an evaluation and display device for detecting and displaying, the smoke detector (7) is subordinate in its function limiting obstacles. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass ein Luftdrucksensor (3) im Rauchdetektor (7) angeordnet ist. Apparatus according to claim 1, characterized in that an air pressure sensor (3) in the smoke detector (7) is arranged. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein Luftdrucksensor (2) vor der Eintrittsöffnung (7a) des Rauchdetektors (7) vorgesehen ist.Apparatus according to claim 1 or 2, characterized in that an air pressure sensor (2) in front of the inlet opening (7a) of the smoke detector (7) is provided. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Luftdrucksensor (2) an der Innenwand (8a) einer Absaughaube (8) befestigt ist, die vor der Eintrittsöffnung des Rauchdetektors (7) angeordnet ist.Apparatus according to claim 3, characterized in that the air pressure sensor (2) on the inner wall (8a) of a suction hood (8) is fixed, which is arranged in front of the inlet opening of the smoke detector (7). Vorrichtung nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, dass ein Luftdrucksensor (1) innerhalb des von dem Rauchdetektor (7) überwachten Raumes (4) angeordnet ist.Device according to claim 1, 2, 3 or 4, characterized in that an air pressure sensor (1) is arranged within the space (4) monitored by the smoke detector (7). Vorrichtung nach Anspruch 1, 3, 4 oder 5, dadurch gekennzeichnet, dass ein Hindernis an einem dem Rauchdetektor (7) vorgelagerten Schutzgitter (6) durch den vor der Eintrittsöffnung (7a) des Rauchdetektors (7) angeordneten Luftdrucksensor (2) und den im überwachten Raum (4) befindlichen Luftdrucksensor (1) ermittelt wird.Apparatus according to claim 1, 3, 4 or 5, characterized in that an obstacle on a smoke detector (7) upstream protective grid (6) by the front of the inlet opening (7a) of the smoke detector (7) arranged air pressure sensor (2) and in the monitored space (4) located air pressure sensor (1) is determined. Vorrichtung nach Anspruch 1, 2 oder 5, dadurch gekennzeichnet, dass durch den im Rauchdetektor (7) angeordneten Luftdrucksensor (3) und den im überwachten Raum (4) befindlichen Luftdrucksensor (1) ein Hindernis an dem Schutzgitter (6), welches dem Rauchdetektor (7) vorgelagert ist, ermittelt wird.Apparatus according to claim 1, 2 or 5, characterized in that by the in the smoke detector (7) arranged air pressure sensor (3) and in the monitored space (4) located air pressure sensor (1) an obstacle on the protective grid (6), which the smoke detector (7) is determined. Vorrichtung nach Anspruch 1, 2, 3 oder 4, dadurch gekennzeichnet, dass ein die Eintrittsöffnung (7a) des Rauchdetektors (7) blockierendes Hindernis durch den im überwachten Raum (4) angeordneten Luftdrucksensor (3) und den vor der Eintrittsöffnung (7a) des Rauchdetektors (7) angeordneten Luftdrucksensor (2) ermittelt wird.Device according to Claim 1, 2, 3 or 4, characterized in that an obstacle blocking the inlet opening (7a) of the smoke detector (7) passes through the air pressure sensor (3) arranged in the monitored space (4) and upstream of the inlet opening (7a) of Smoke detector (7) arranged air pressure sensor (2) is determined. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass ein Rauchdetektor (7) eine Raucheintrittsöffnung (7a) und eine Rauchaustrittsöffnung (7b) aufweist, dass beiden Öffnungen (7a, 7b) jeweils Rohr (10, 11) vorgeschaltet ist, und dass das vor der Raucheintrittsöffnung (7a) angeordnete Rohr (10) in seiner Außenwand eine Vielzahl von Löchern aufweist.Device according to one of claims 1 to 8, characterized in that a smoke detector (7) has a smoke inlet opening (7a) and a smoke outlet opening (7b), that both openings (7a, 7b) each tube (10, 11) is connected upstream, and in that the pipe (10) arranged in front of the smoke inlet opening (7a) has a multiplicity of holes in its outer wall. Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass eine Anwendung der Vorrichtung im Frachtraum eines Flugzeuges zur Erkennung und Verhinderung von durch Ladung zugestellte und damit abdeckende Rauchdetektoren (7) vorgesehen ist.Device according to one of claims 1 to 9, characterized in that an application of the device in the hold of an aircraft for detecting and preventing supplied by charge and thus covering smoke detectors (7) is provided.
EP04008031A 2003-05-02 2004-04-02 Device for visually inspecting a smoke detector located in an aircraft Expired - Lifetime EP1475761B1 (en)

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DE10319688 2003-05-02
DE10319688A DE10319688B4 (en) 2003-05-02 2003-05-02 Device for the permanent monitoring of a smoke detector arranged in an aircraft

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EP1475761A1 true EP1475761A1 (en) 2004-11-10
EP1475761B1 EP1475761B1 (en) 2006-11-08

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EP (1) EP1475761B1 (en)
AT (1) ATE344955T1 (en)
DE (2) DE10319688B4 (en)
ES (1) ES2275148T3 (en)

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EP0549888A1 (en) * 1991-12-09 1993-07-07 Nohmi Bosai Ltd. Fire detector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2043069A1 (en) * 2007-09-28 2009-04-01 Siemens Building Technologies Fire & Security Products GmbH & Co. oHG Device for monitoring a fire alarm and configuration method and fire alarm
EP2043068A1 (en) * 2007-09-28 2009-04-01 Siemens Building Technologies Fire & Security Products GmbH & Co. oHG Device for monitoring a fire alarm and configuration method and fire alarm
CN112562252A (en) * 2021-02-20 2021-03-26 南京擅水科技有限公司 Fire smoke detection alarm device
US12008887B2 (en) 2021-03-08 2024-06-11 Carrier Corporation Method of fire detector cover detection and corresponding fire detection apparatus

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DE502004001932D1 (en) 2006-12-21
US7015820B2 (en) 2006-03-21
US20040246137A1 (en) 2004-12-09
ES2275148T3 (en) 2007-06-01
DE10319688A1 (en) 2004-12-30
DE10319688B4 (en) 2007-01-11
EP1475761B1 (en) 2006-11-08
ATE344955T1 (en) 2006-11-15

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