EP1224641B2 - Device for detecting smoke - Google Patents
Device for detecting smoke Download PDFInfo
- Publication number
- EP1224641B2 EP1224641B2 EP00956437.8A EP00956437A EP1224641B2 EP 1224641 B2 EP1224641 B2 EP 1224641B2 EP 00956437 A EP00956437 A EP 00956437A EP 1224641 B2 EP1224641 B2 EP 1224641B2
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- European Patent Office
- Prior art keywords
- smoke
- receiver
- transmitter
- radiation
- cover
- 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.)
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Classifications
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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
- 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 present invention relates to a device for detecting smoke, for example in a room.
- Smoke detectors are known in a variety of forms and designs and on the market. However, almost all work on one principle. To be detected, the smoke must flow through the smoke detector. The method is known as a scattered light method and requires that the smoke comes into contact with the sensor. The consequence of this is that smoke detectors have to protrude from the ceiling, installation flush with the ceiling is not possible according to the applicable European standard EN54. During maintenance, it is necessary that the entire sensor head is disassembled and sent to the manufacturer. In practice, the sensor heads are replaced by new, as can not wait until the replaced, repaired by the manufacturer or come back serviced. As a result, it is necessary that twice the amount of smoke detectors be stored by the maintenance companies.
- the commercially available smoke detectors can be manipulated without there being any detection of the manipulation.
- it is necessary that each individual smoke detector is wired to the control cabinet.
- a device wherein a transmitter for emitting a reflected from the smoke in space radiation and the radiation reflected by the smoke detecting receiver are provided.
- the present invention has for its object to provide a device of the type mentioned above, with which detected in a simple way smoke, detected pollution or sabotage or the smoke detector is tested for its functionality. This should also make the European Standard EN54 for smoke alarms easier and more satisfiable.
- What type of radiation is of minor importance.
- it may be a laser or light radiation of any wavelength (preferably in the infrared range), but is also intended to ultrasound or to a radiation that works on the ionization principle. All radiation sources can be used here, in which it is ensured that the emitted radiation is reflected by the smoke particles.
- the great advantage is that the smoke detector does not have to be flowed through by the smoke, so that a flush-mounted installation is possible.
- the transmitter and / or the receiver according to the invention a pre-set. This cover ensures that all elements required for measurement are not contaminated.
- the transmitter emits radiation in the room immediately below the smoke detector. If the radiation hits smoke particles which form a reflection barrier, the receiver can detect the reflected radiation. This also detects the smoke. From the radiating or incidence angle selected, the reflection distance, that is the distance between the smoke detector and the smoke, also results.
- a self-diagnosis is also provided.
- the transmitter before the cover assigned a control receiver For example, the transmitter emits a short pulsed radiation. If this radiation is confirmed by the control receiver, the function of the transmitter is guaranteed.
- the control receiver monitors the radiation channel.
- a short, pulsed transmission radiation is emitted by a control transmitter. If radiation is confirmed by the receiver, the function of the receiver is guaranteed.
- the cover serves as a reflection surface. If the radiation is reflected at the reflection surface, it is detected by its own transmitter or receiver, whereby it is determined that the cover has become radiopaque.
- a contamination control of the cover can be performed. If dust or dirt particles are deposited on the cover, the signal value of the receiver assigned to the transmitter and of the main receiver increases steadily. If a critical contamination value is reached, a maintenance signal is issued. The resulting maintenance usually only means cleaning the cover. It is not necessary to remove or replace the smoke detector sensor.
- the novel device according to the invention for Detection of smoke can also be influenced by external radiation.
- the receiver In the case of light radiation, this is primarily solar radiation or radiation from other light sources, when using infrared radiation, an infrared remote control or an infrared interface from a printer can lead to irritation. To exclude this, the receiver should be preceded by a filter that filters out these extraneous radiations. If, for example, light is used as radiation, then the sensor receives the entire incident light radiation, but only converts the light radiation with the emitted frequency into DC voltage, which then results in the transmission signal. The remaining light radiation is converted into AC voltage and set to zero.
- the device according to the invention is preferably controlled so that not every deviation of the reflection leads to an alarm or the like.
- an insect flyby incidentally reflecting radiation is as likely to pass as a cleaner with a feather duster. Therefore, a plurality of recognition processes are successively added by a control program. Only when several detection processes consecutively detect a deviation of the reflection, an alarm is triggered. Even an abrupt increase in the deviation of the reflection does not yet lead to a message, since it is known that smoke leads rather to a continuous increase of a reflection deviation.
- the entire device is preferably formed as a unit. It can be designed as a stand-alone version, with the connections being controlled by simple relay outputs.
- the entire system can be controlled by a flexible microprocessor system via a BUS.
- Each smoke detector communicates with a control center via the BUS.
- a cable break can be detected by an initialization sequence, whereby a completely failed smoke detector is determined.
- the error message includes the degree of contamination or sabotage and the number of the device on which the event occurred.
- the inventive device is particularly suitable for installation in ducts of air conditioning systems, these devices are usually used to trigger fire dampers.
- these devices are usually used to trigger fire dampers.
- the smoke detector was set in the right direction to the flow direction. This is why errors often occurred in the past, especially when the flow direction was uneven and changed.
- the flow direction is completely unimportant, so that no great care must be taken for the arrangement of the device in the channel.
- An apparatus according to the invention for detecting smoke indicated by dashed lines 1 has a transmitter 2 and a receiver 3.
- Transmitter 2 and receiver 3 are preferably located in a housing 4, which may be embedded in a ceiling, for example.
- the transmitter 2 is preferably assigned a separate receiver 9 and a control receiver 10.
- the receiver 3 in turn has its own transmitter 11 and a control transmitter 12 assigned.
- the actual smoke detection is done via the transmitter 2 and the receiver 3 according FIG. 2 , If smoke 1 is present in a smoke measurement zone, the radiation 6 emitted by the transmitter 2 is reflected by the smoke 1 and measured by the receiver 3. The intensity of the reflection is a measure of the smoke density. Furthermore, the reflection distance results from a selected emission or incidence angle, ie it can also be determined how far away the smoke from the device according to the invention is.
- the own receiver 9 for the transmitter 2 and the own transmitter 11 for the receiver 3 are provided, as shown in FIG. 3 is shown. If the cover 5 or 7 be dirty or taped, the radiation can not penetrate through the cover 5/7, but is reflected. This reflected radiation is detected by the receiver 9 and the receiver 3.
- the system can be set so that a percentage of contamination is determined. This means, for example, that one Error message is given only when the pollution has exceeded a certain degree.
- the setting can also be made so that the smoke detection remains active with increasing pollution up to a certain height.
- a self-test of the inventive device is desired. This one is in FIG. 4 shown.
- the self-test serve the control receiver 10 and the control transmitter 12.
- the transmitter 2 is tested by its signal from the receiver 10 is received directly. If the receiver 10 registers the radiation, it is determined that the transmitter is operational.
- the receiver 3 is tested by being illuminated by the transmitter 12. If receiver 3 receives the radiation, it is functional.
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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)
- Fire-Detection Mechanisms (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur Erkennung von Rauch beispielsweise in einem Raum.The present invention relates to a device for detecting smoke, for example in a room.
Rauchmelder sind in vielfältiger Form und Ausführung bekannt und auf dem Markt. Sie arbeiten jedoch fast alle nach einem Prinzip. Um detektiert zu werden, muss der Rauch durch den Rauchmelder hindurchströmen. Das Verfahren ist als Streulichtverfahren bekannt und setzt voraus, dass der Rauch mit dem Sensor in Kontakt kommt. Die Folge davon ist, dass Rauchmelder aus der Decke herausragen müssen, ein deckenbündiger Einbau ist nach der hierfür geltenden Europäischen Norm EN54 nicht möglich. Bei der Wartung ist es notwendig, dass der ganze Sensorkopf demontiert und zum Hersteller geschickt wird. In der Praxis werden dabei die Sensorköpfe durch neue ersetzt, da nicht gewartet werden kann, bis die ausgetauschten, vom Hersteller repariert bzw. gewartet zurückkommen. Als Folge davon ist es notwendig, dass die doppelte Menge an Rauchmeldern von den Wartungsfirmen bevorratet wird.Smoke detectors are known in a variety of forms and designs and on the market. However, almost all work on one principle. To be detected, the smoke must flow through the smoke detector. The method is known as a scattered light method and requires that the smoke comes into contact with the sensor. The consequence of this is that smoke detectors have to protrude from the ceiling, installation flush with the ceiling is not possible according to the applicable European standard EN54. During maintenance, it is necessary that the entire sensor head is disassembled and sent to the manufacturer. In practice, the sensor heads are replaced by new, as can not wait until the replaced, repaired by the manufacturer or come back serviced. As a result, it is necessary that twice the amount of smoke detectors be stored by the maintenance companies.
Ferner können die handelsüblichen Rauchmelder manipuliert werden, ohne dass es zu einer Detektion der Manipulation kommt. Darüber hinaus ist es notwendig, dass jeder einzelne Rauchmelder zum Schaltschrank hin verdrahtet wird.Furthermore, the commercially available smoke detectors can be manipulated without there being any detection of the manipulation. In addition, it is necessary that each individual smoke detector is wired to the control cabinet.
Ein weiterer Nachteil der bekannten Rauchmelder liegt darin, dass diese in der Praxis leicht verschmutzen. Sind sie verschmutzt, können sie aber keinen Rauch mehr detektieren.Another disadvantage of the known smoke detector is that they easily pollute in practice. If they are dirty, but they can no longer detect smoke.
Aus der
Diese Anfgabe wird von ether Vorrichtung gemäß Anspruch 1 gelöst.This starting is achieved by ether device according to
Um welche Art der Strahlung es sich handelt, ist von untergeordneter Bedeutung. Beispielsweise kann es sich um eine Laser- oder Lichtstrahlung jeder Wellenlänge (bevorzugt im Infrarot-Bereich) handeln, allerdings ist auch an Ultraschall gedacht oder an eine Strahlung, die nach dem Ionisationsprinzip arbeitet. Alle Strahlungsquellen können hier Einsatz finden, bei denen gewährleistet ist, dass die ausgesandte Strahlung durch die Rauchpartikel reflektiert wird.What type of radiation is of minor importance. For example, it may be a laser or light radiation of any wavelength (preferably in the infrared range), but is also intended to ultrasound or to a radiation that works on the ionization principle. All radiation sources can be used here, in which it is ensured that the emitted radiation is reflected by the smoke particles.
Bei der erfindungsgemässen Vorrichtung besteht der grosse Vorteil darin, dass der Rauchmelder nicht mehr von dem Rauch durchströmt werden muss, so dass ein deckenbündiger Einbau möglich ist.In the inventive device, the great advantage is that the smoke detector does not have to be flowed through by the smoke, so that a flush-mounted installation is possible.
Dem Sender und/oder dem Empfänger ist erfindungsgemäß eine Abeckung vorgesetzt. Diese Abdeckung gewährleistet, dass alle zur Messung notwendigen Elemente nicht verschmutzt werden.The transmitter and / or the receiver according to the invention a pre-set. This cover ensures that all elements required for measurement are not contaminated.
Zur Erkennung (Detektion) von eventuell auftretendem Rauch gibt der Sender eine Strahlung in den unmittelbar unter dem Rauchmelder liegenden Raum ab. Trifft die Strahlung auf Rauchpartikel, welche eine Reflektionsbarriere bilden, kann der Empfänger die reflektierte Strahung erkennen. Damit ist auch der Rauch detektiert. Aus dem dabei gewählten Abstrahl- bzw. Einfallwinkel resultiert auch der Reflektionsabstand, d.h., der Abstand zwischen Rauchmelder und Rauch.To detect (detect) any smoke that may occur, the transmitter emits radiation in the room immediately below the smoke detector. If the radiation hits smoke particles which form a reflection barrier, the receiver can detect the reflected radiation. This also detects the smoke. From the radiating or incidence angle selected, the reflection distance, that is the distance between the smoke detector and the smoke, also results.
Vor allem ist auch daran gedacht, die Reflektionszeit zu ermitteln, da ein Zeitunterschied zwischen der Zeit besteht, welche eine von einer gegenüberliegenden Wand oder Boden reflektierte Strahlung benötigt und der Strahlung, die von einem näheren Raum reflektiert wird.Above all, it is also thought to determine the reflection time, since there is a time difference between the time it takes a radiation reflected from an opposite wall or ground and the radiation reflected from a closer space.
Bei der erfindungsgemässen Vorrichtung ist auch eine Selbstdiagnose vorgesehen. Hierzu ist z.B. dem Sender vor der Abdeckung ein Kontrollempfänger zugeordnet. Beispielsweise wird vom Sender eine kurze gepulste Strahlung abgegeben. Wird von dem Kontrollempfänger diese Strahlung bestätigt, so ist die Funktion des Senders gewährleistet. Der Kontrollempfänger überwacht dabei den Strahlungskanal.In the device according to the invention, a self-diagnosis is also provided. For this, e.g. the transmitter before the cover assigned a control receiver. For example, the transmitter emits a short pulsed radiation. If this radiation is confirmed by the control receiver, the function of the transmitter is guaranteed. The control receiver monitors the radiation channel.
Zur evtl. Überwachung des Empfängers wird von einem Kontrollsender eine kurze, gepulste Sendestrahlung abgegeben. Wird durch den Empfänger dies Strahlung bestätigt, so ist die Funktion des Empfängers gewährleistet.For possible monitoring of the receiver, a short, pulsed transmission radiation is emitted by a control transmitter. If radiation is confirmed by the receiver, the function of the receiver is guaranteed.
Werden beide Signale, das des Senders und das des Empfängers, bestätigt, so kann auch Rauch detektiert werden.If both signals, that of the transmitter and that of the receiver, are confirmed, smoke can also be detected.
Durch die Trennung des Rauchmelders mittels der Abdeckung von dem Prüfraum, d.h., von der Rauchmesszone und die Anordnung eines jeweils eigenen Senders und Empfängers kann eine mögliche Manipulation des Rauchmelders, z.B. durch Abkleben, erkannt werden. Hierbei dient die Abdeckung als Reflektionsfläche. Wird die Strahlung an der Reflektionsfläche reflektiert, so wird sie von einem eigenen Sender bzw. Empfänger detektiert, wodurch festgestellt wird, dass die Abdeckung strahlungsundurchlässig geworden ist.By separating the smoke detector by means of the cover from the test room, i.e., from the smoke detection zone and arranging each separate transmitter and receiver, possible manipulation of the smoke detector, e.g. by masking, be recognized. Here, the cover serves as a reflection surface. If the radiation is reflected at the reflection surface, it is detected by its own transmitter or receiver, whereby it is determined that the cover has become radiopaque.
Desweiteren kann auch eine Verschmutzungsgradkontrolle der Abdeckung durchgeführt werden. Lagern sich auf der Abdeckung Staub oder Schmutzpartikel ab, so steigt der Signalwert des dem Sender zugeordneten eigenen Empfängers und des Hauptempfängers stetig an. Wird ein kritischer Verschmutzungswert erreicht, erfolgt die Herausgabe eines Wartungssignals. Die daraus resultierende Wartung bedeutet im Normalfall lediglich die Reinigung der Abdeckung. Ein Ausbau bzw. Austausch des Rauchmeldersensors ist nicht notwendig.Furthermore, a contamination control of the cover can be performed. If dust or dirt particles are deposited on the cover, the signal value of the receiver assigned to the transmitter and of the main receiver increases steadily. If a critical contamination value is reached, a maintenance signal is issued. The resulting maintenance usually only means cleaning the cover. It is not necessary to remove or replace the smoke detector sensor.
Die neue erfindungsgemässe Vorrichtung zur Erkennung von Rauch kann auch durch Fremdstrahlung beeinflusst werden.The novel device according to the invention for Detection of smoke can also be influenced by external radiation.
Bei Lichtstrahlung ist dies vor allem eine Sonneneinstrahlung oder eine Strahlung von anderen Lichtquellen, bei Verwendung von Infrarotstrahlung, kann eine Infrarotfernbedienung oder eine Infrarotschnittstelle von einem Drucker zu Irritationen führen. Um dieses auszuschliessen, soll dem Empfänger ein Filter vorgeschaltet werden, der diese Fremdstrahlungen ausfiltert. Wird beispielsweise Licht als Strahlung verwendet, so empfängt der Sensor die gesamte einfallende Lichtstrahlung, wandelt aber nur die Lichtstrahlung mit der ausgesendeten Frequenz in Gleichspannung um, die dann das Sendesignal ergibt. Die übrige Lichtstrahlung wird in Wechselspannung umgesetzt und auf Null gesetzt.In the case of light radiation, this is primarily solar radiation or radiation from other light sources, when using infrared radiation, an infrared remote control or an infrared interface from a printer can lead to irritation. To exclude this, the receiver should be preceded by a filter that filters out these extraneous radiations. If, for example, light is used as radiation, then the sensor receives the entire incident light radiation, but only converts the light radiation with the emitted frequency into DC voltage, which then results in the transmission signal. The remaining light radiation is converted into AC voltage and set to zero.
Ferner wird die erfindungsgemässe Vorrichtung bevorzugt so gesteuert, dass nicht schon jede Abweichung der Reflektion zu einem Alarm od. dgl. führt. Beispielsweise ist ein Insektenvorbeiflug, der zufällig die Strahlung reflektiert, ebenso zu übergehen, wie eine Putzfrau mit einem Staubwedel. Deshalb werden durch ein Steuerungsprogramm eine Mehrzahl von Erkennungsvorgängen hintereinander addiert. Erst wenn mehrere Erkennungsvorgänge aufeinanderfolgend, eine Abweichung der Reflektion detektieren, kommt es zu einer Alarmauslösung. Auch ein abrupter Anstieg der Abweichung der Reflektion führt noch nicht zu einer Meldung, da bekannt ist, dass Rauch eher zu einem kontinuierlichen Ansteigen einer Reflektionsabweichung führt.Furthermore, the device according to the invention is preferably controlled so that not every deviation of the reflection leads to an alarm or the like. For example, an insect flyby incidentally reflecting radiation is as likely to pass as a cleaner with a feather duster. Therefore, a plurality of recognition processes are successively added by a control program. Only when several detection processes consecutively detect a deviation of the reflection, an alarm is triggered. Even an abrupt increase in the deviation of the reflection does not yet lead to a message, since it is known that smoke leads rather to a continuous increase of a reflection deviation.
Die gesamte Vorrichtung wird bevorzugt als eine Einheit ausgebildet. Sie kann als Stand-Alone-Version ausgebildet sein, wobei die Anschlüsse durch einfache Relais-Ausgänge angesteuert werden.The entire device is preferably formed as a unit. It can be designed as a stand-alone version, with the connections being controlled by simple relay outputs.
Bevorzugt ist jedoch das ganze System durch ein flexibles Mikroprozessorsystem über einen BUS ansteuerbar. Über den BUS kommuniziert jeder Rauchmelder mit einer Zentrale. Dabei kann durch eine Initialisierungsequenz ein Kabelbruch erkannt werden, wodurch ein komplett ausgefallener Rauchmelder ermittelt wird.Preferably, however, the entire system can be controlled by a flexible microprocessor system via a BUS. Each smoke detector communicates with a control center via the BUS. In this case, a cable break can be detected by an initialization sequence, whereby a completely failed smoke detector is determined.
Falls keine Verschmutzung oder Sabotage vorliegt, wird die Rauchintensität und das Ergebnis weitergegeben. Falls die Vorrichtungen stark verschmutzt oder sabotiert sind, wird eine Fehlermeldung weitergegeben. Die Fehlermeldung beinhaltet den Grad der Verschmutzung bzw. die Sabotage und die Nummer der Vorrichtung, an der das Ereignis aufgetreten ist.If there is no contamination or sabotage, the smoke intensity and the result are passed on. If the devices are heavily soiled or sabotaged, an error message will be passed on. The error message includes the degree of contamination or sabotage and the number of the device on which the event occurred.
Die erfindungsgemässe Vorrichtung eignet sich vor allem auch zum Einbauen in Kanälen von Klimaanlagen, wobei diese Vorrichtungen in der Regel zum Auslösen von Brandschutzklappen dienen. Für die bisherigen Rauchmelder in Klimakanälen war es wichtig, dass der Rauchmelder in die richtige Richtung zur Durchströmrichtung gestellt wurde. Deshalb kam es in der Vergangenheit hier oftmals zu Fehlern, vor allem wenn die Durchströmrichtung uneinheitlich war und wechselte. Für die erfindungsgemässe Vorrichtung zur Erkennung von Rauch ist die Durchströmrichtung völlig unwichtig, so dass für die Anordnung der Vorrichtung im Kanal keine grosse Sorgfalt aufgewendet werden muss.The inventive device is particularly suitable for installation in ducts of air conditioning systems, these devices are usually used to trigger fire dampers. For the previous smoke detectors in air conditioning ducts it was important that the smoke detector was set in the right direction to the flow direction. This is why errors often occurred in the past, especially when the flow direction was uneven and changed. For the inventive device for detecting smoke, the flow direction is completely unimportant, so that no great care must be taken for the arrangement of the device in the channel.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in
-
eine schematische Darstellung einer erfindungsgemässen Vorrichtung zum Erkennen von Rauch;Figur 1 -
schematische Darstellung von verschiedenen Funktionen der erfindungsgemässen Vorrichtung zur Erkennung von Rauch.Figuren 2bis 4
-
FIG. 1 a schematic representation of an inventive device for detecting smoke; -
FIGS. 2 to 4 schematic representation of various functions of the inventive device for detecting smoke.
Eine erfindungsgemässe Vorrichtung zum Erkennen von gestrichelt angedeutetem Rauch 1 weist einen Sender 2 und einen Empfänger 3 auf. Sender 2 und Empfänger 3 befinden sich vorzugsweise in einem Gehäuse 4, welches beispielsweise in eine Decke eingelassen sein kann.An apparatus according to the invention for detecting smoke indicated by dashed
Zwischen Sender 2 und Rauch 1 befindet sich eine Abdeckung 5, welche einen Strahl 6, der von dem Sender 2 ausgesandt wird, durchlässt. Desgleichen befindet sich eine weitere Abdeckung 7 vor dem Empfänger 3, wobei die Abdeckung 7 einen reflektierten Strahl 8 durchlässt.Between
Dem Sender 2 ist bevorzugt ein eigener Empfänger 9 sowie ein Kontrollempfänger 10 zugeordnet. Dem Empfänger 3 wiederum ist ein eigener Sender 11 und ein Kontrollsender 12 zugeordnet.The
Die Funktionsweise der vorliegenden Erfindung ist folgende:The operation of the present invention is as follows:
Die eigentliche Raucherkennung geschieht über den Sender 2 und den Empfänger 3 gemäss
Im Laufe der Zeit kommt es vor, dass die Abdeckungen 5 und 7 verschmutzen, oder aber dass sie, beispielsweise bei Sabotage, abgedeckt werden. Um dies zu ermitteln, sind der eigene Empfänger 9 für den Sender 2 und der eigene Sender 11 für den Empfänger 3 vorgesehen, wie dies in
In vielen Fällen ist auch ein Selbsttest der erfindungsgemässen Vorrichtung gewünscht. Dieser ist in
Der Empfänger 3 wird dadurch getestet, dass der vom Sender 12 angestrahlt wird. Empfängt er Empfänger 3 die Strahlung, ist er funktionsfähig.The
Bei defektem Sender und/oder Empfänger wird eine Fehlermeldung ausgegeben.If the transmitter and / or receiver are defective, an error message is output.
Claims (4)
- Apparatus for detecting smoke in a room, said apparatus having a housing (4), a transmitter (2) for transmitting a beam, which is reflectable by the smoke (1), and a receiver (3) which detects the beam reflected by the smoke, which are located in the housing (4), wherein the smoke does not have to flow through the apparatus and installation flush with the ceiling is possible, and wherein a beam-permeable cover (5, 7) is placed in front of the transmitter (2) and/or the receiver (3), its own receiver (9) is associated with the transmitter (2) for receiving a beam reflected by the cover (5) and its own transmitter (11) is associated with the receiver (3) on the same side of the cover (7).
- Apparatus according to claim 1, characterized in that a monitoring receiver (10) is associated with the transmitter (2) for detecting the beam emerging from the transmitter.
- Apparatus according to claim 1 or 2, characterized in that a monitoring transmitter (12) is associated with the receiver (3).
- Apparatus according to one of claims 1 to 3, characterized in that transmitters (2, 11, 12) and receivers (3, 9, 10) are connected to a control center via a BUS system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20023533U DE20023533U1 (en) | 1999-10-26 | 2000-08-12 | Smoke detector with transmitter and receiver in housing inserted in ceiling, to emit beam for reflection off smoke |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19951403 | 1999-10-26 | ||
DE19951403A DE19951403B4 (en) | 1999-10-26 | 1999-10-26 | Method for detecting smoke |
PCT/EP2000/007871 WO2001031602A1 (en) | 1999-10-26 | 2000-08-12 | Device for detecting smoke |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1224641A1 EP1224641A1 (en) | 2002-07-24 |
EP1224641B1 EP1224641B1 (en) | 2003-05-02 |
EP1224641B2 true EP1224641B2 (en) | 2014-01-08 |
Family
ID=7926832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00956437.8A Expired - Lifetime EP1224641B2 (en) | 1999-10-26 | 2000-08-12 | Device for detecting smoke |
Country Status (6)
Country | Link |
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EP (1) | EP1224641B2 (en) |
AT (1) | ATE239281T1 (en) |
AU (1) | AU6838000A (en) |
DE (2) | DE19951403B4 (en) |
ES (1) | ES2198348T5 (en) |
WO (1) | WO2001031602A1 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10046992C1 (en) † | 2000-09-22 | 2002-06-06 | Bosch Gmbh Robert | Scattered light smoke |
DE10135705A1 (en) * | 2001-07-21 | 2003-02-20 | Grecon Greten Gmbh & Co Kg | Method for detecting and evaluating electromagnetic radiation emitted from an area uses two measuring chains combined in components and a control and evaluation unit. |
DE502005004298D1 (en) * | 2005-11-04 | 2008-07-10 | Siemens Ag | Manipulation protection of a fire detector |
DE202006015553U1 (en) | 2006-10-09 | 2006-12-14 | Schako Klima Luft Ferdinand Schad Kg Zweigniederlassung Kolbingen | Detecting device for smoke in room has transmitter for transmitting radiation and receiver that detects radiation whereby radiation transparent cover placed over transmitter or receiver is made up of an unbreakable material |
DE102011108390B4 (en) | 2011-07-22 | 2019-07-11 | PPP "KB Pribor" Ltd. | Method of making an open type smoke detector |
DE102011108389A1 (en) | 2011-07-22 | 2013-01-24 | PPP "KB Pribor" Ltd. | smoke detector |
EP2765566A3 (en) | 2013-02-08 | 2014-11-05 | SCHAKO Klima Luft Ferdinand Schad KG | Smoke alarm |
DE102013101280A1 (en) | 2013-02-08 | 2014-08-14 | Schako Klima Luft Ferdinand Schad Kg | smoke detector |
DE102013002859B4 (en) | 2013-02-20 | 2018-08-23 | Detectomat Gmbh | Device for detecting smoke in a room and method for checking the functionality of such a device |
DE102013003614B4 (en) | 2013-02-20 | 2015-10-08 | Job Lizenz Gmbh & Co Kg | Device for detecting smoke in a room and method for checking the functionality of such a device |
US9679468B2 (en) | 2014-04-21 | 2017-06-13 | Tyco Fire & Security Gmbh | Device and apparatus for self-testing smoke detector baffle system |
US9659485B2 (en) | 2014-04-23 | 2017-05-23 | Tyco Fire & Security Gmbh | Self-testing smoke detector with integrated smoke source |
EP3091517B1 (en) | 2015-05-06 | 2017-06-28 | Siemens Schweiz AG | Open scattered-light smoke detector and testing device for such an open scattered-light smoke detector |
EP3091516A1 (en) | 2015-05-06 | 2016-11-09 | Siemens Schweiz AG | Open scattered light smoke detector and mobile communication device for such an open scattered-light smoke detector for reception of detector data and for transmitting of update data |
EP4341720A1 (en) * | 2021-05-21 | 2024-03-27 | Signify Holding B.V. | A control device for reconfiguring a radiofrequency-based sensing system and a method thereof |
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CH571750A5 (en) * | 1974-09-10 | 1976-01-15 | Nohmi Bosai Kogyo Co Ltd | Photoelectricccc aerosol or smoke detector - second photo cell receives reflected light from prism surface to compensate for contamination |
US4011458A (en) * | 1975-10-09 | 1977-03-08 | Pyrotector, Incorporated | Photoelectric detector with light source intensity regulation |
ZA763862B (en) * | 1975-07-21 | 1977-05-25 | Gen Signal Corp | Photodiode smoke detector |
US4314239A (en) * | 1979-12-13 | 1982-02-02 | Giovanni Odone | Portable electronic alarm device |
US4870394A (en) * | 1988-01-29 | 1989-09-26 | Systron-Donner Corp. | Smoke detector with improved testing |
JP2935549B2 (en) * | 1990-08-23 | 1999-08-16 | 能美防災株式会社 | Fire detection method and device |
CH683464A5 (en) * | 1991-09-06 | 1994-03-15 | Cerberus Ag | Optical smoke detector with active surveillance. |
NL9200283A (en) * | 1992-02-17 | 1993-09-16 | Aritech Bv | MONITORING SYSTEM. |
US5764142A (en) * | 1995-09-01 | 1998-06-09 | Pittway Corporation | Fire alarm system with smoke particle discrimination |
DE19912911C2 (en) * | 1999-03-22 | 2001-07-19 | Schako Metallwarenfabrik | Device for detecting smoke |
-
1999
- 1999-10-26 DE DE19951403A patent/DE19951403B4/en not_active Revoked
-
2000
- 2000-08-12 WO PCT/EP2000/007871 patent/WO2001031602A1/en active IP Right Grant
- 2000-08-12 DE DE50002015T patent/DE50002015D1/en not_active Expired - Lifetime
- 2000-08-12 AT AT00956437T patent/ATE239281T1/en active
- 2000-08-12 ES ES00956437.8T patent/ES2198348T5/en not_active Expired - Lifetime
- 2000-08-12 AU AU68380/00A patent/AU6838000A/en not_active Abandoned
- 2000-08-12 EP EP00956437.8A patent/EP1224641B2/en not_active Expired - Lifetime
Also Published As
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AU6838000A (en) | 2001-05-08 |
ATE239281T1 (en) | 2003-05-15 |
EP1224641A1 (en) | 2002-07-24 |
DE19951403A1 (en) | 2001-05-03 |
DE50002015D1 (en) | 2003-06-05 |
DE19951403B4 (en) | 2010-01-07 |
WO2001031602A1 (en) | 2001-05-03 |
EP1224641B1 (en) | 2003-05-02 |
ES2198348T3 (en) | 2004-02-01 |
ES2198348T5 (en) | 2014-02-28 |
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