EP1224641B1 - Device for detecting smoke - Google Patents

Device for detecting smoke Download PDF

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Publication number
EP1224641B1
EP1224641B1 EP00956437A EP00956437A EP1224641B1 EP 1224641 B1 EP1224641 B1 EP 1224641B1 EP 00956437 A EP00956437 A EP 00956437A EP 00956437 A EP00956437 A EP 00956437A EP 1224641 B1 EP1224641 B1 EP 1224641B1
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EP
European Patent Office
Prior art keywords
smoke
receiver
transmitter
radiation
cover
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EP00956437A
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German (de)
French (fr)
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EP1224641A1 (en
EP1224641B2 (en
Inventor
Gottfried Müller
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Schako KG
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Schako Klima Luft Ferdinand Schad KG
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Application filed by Schako Klima Luft Ferdinand Schad KG filed Critical Schako Klima Luft Ferdinand Schad KG
Priority to DE20023533U priority Critical patent/DE20023533U1/en
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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 Detection of smoke, for example in a room.
  • Smoke detectors are in a variety of forms and designs known and in the market. However, they work almost all according to a principle. To be detected, the smoke needs to be detected flow through the smoke detector. The procedure is known as scattered light method and requires that the Smoke comes into contact with the sensor. The consequence of this is that smoke detectors must protrude from the ceiling, a ceiling-flush installation is in accordance with the applicable European standard EN54 not possible. At the maintenance is it is necessary that the whole sensor head dismantled and to Manufacturer is sent. In practice, the Sensor heads replaced with new, because not to be maintained can be repaired by the manufacturer until the replaced come back waiting. As a result, it is necessary that twice the amount of smoke detectors from the Maintenance companies is stocked.
  • the commercially available smoke detectors can be manipulated be without causing a detection of the manipulation comes.
  • Another disadvantage of the known smoke detector is in that they easily get dirty in practice. are it pollutes, but they can no longer smoke detect.
  • a device wherein a transmitter to Emitting a radiation that can be reflected by the smoke in space and one recognizing the radiation reflected by the smoke Receivers are provided.
  • the present invention is based on the object Device of the o.g. Kind of creating with which simple way smoke detected, a pollution or sabotage detected or the smoke detector on his Functionality is tested. This should also the European standard EN54 for smoke alarm lighter and be more satisfiable.
  • the type of radiation is from subordinate importance.
  • it may be a laser or light radiation of each wavelength (preferably in the infrared range) act, however also thought of ultrasound or radiation that works according to the ionization principle. All radiation sources can be used here, where guaranteed is that the emitted radiation through the smoke particles is reflected.
  • the smoke detector is no longer of the Smoke must be flowed through, leaving a ceiling flush Installation is possible.
  • the transmitter and / or the receiver is according to the invention a Licking pre-set. This cover ensures that all elements necessary for the measurement are not be polluted.
  • the transmitter For detection (detection) of possibly occurring smoke the transmitter gives a radiation in the immediately below the Smoke detector lying room. Hits the radiation Smoke particles which form a reflection barrier can the receiver recognizes the reflected radiation. This is also the smoke detected. From the chosen one Radiation or angle of incidence also results in the Reflection distance, that is, the distance between smoke detectors and smoke.
  • the reflection time Determine there is a time difference between the time which is one from an opposite wall or Ground reflected radiation needed and the radiation, which is reflected by a closer room.
  • the inventive device is also a self-diagnosis provided.
  • the transmitter the cover assigned a control receiver.
  • the transmitter will pulse a short Radiation emitted. Is this from the control receiver Radiation confirmed, so is the function of the transmitter guaranteed.
  • the control receiver monitors the Radiation channel.
  • the cover serves as Reflecting surface. Will the radiation at the Reflected surface, so it is from a own transmitter or receiver detected, which it is stated that the cover has become radiopaque.
  • the novel device according to the invention for detecting Smoke can also be influenced by extraneous radiation.
  • the receiver should a filter upstream of these extraneous radiations filters out. For example, becomes light as radiation used, the sensor receives the entire incoming Light radiation, but only converts the light radiation with the The frequency is then converted to DC voltage, which is then the Transmission signal results. The remaining light radiation is in AC voltage converted and set to zero.
  • the device according to the invention is preferably so controlled that not already any deviation of the reflection to an alarm od.
  • an alarm od Like. leads.
  • Insect flyby which happens to reflect the radiation, to pass as well as a cleaning lady with a Feather duster. Therefore be through a control program a plurality of recognition processes in a row added. Only if several recognition processes consecutive, a deviation of the reflection detect, it comes to an alarm triggering. Also a abrupt increase in the deviation of reflection still results not to a message, since it is known that smoke tends to a continuous increase in a Reflection deviation leads.
  • the entire device is preferred as a unit educated. It can be designed as a stand-alone version its connections being through simple relay outputs be controlled.
  • the whole system is flexible Microprocessor system can be controlled via a BUS.
  • each smoke detector communicates with a central office.
  • An initialization sequence can cause a cable break be recognized, creating a completely unusual Smoke detector is determined.
  • the error message includes the degree of pollution or sabotage and the number of the device where the event occurred is.
  • the inventive device is especially suitable also for installation in ducts of air conditioning systems, these Devices usually for triggering Fire dampers serve.
  • these Devices usually for triggering Fire dampers serve.
  • the smoke detector in the correct direction was set to the flow direction. That is why in the past it often happened here Errors, especially if the flow direction was inconsistent and changed.
  • the inventive Device for detecting smoke is the Flow direction completely unimportant, so for the Arrangement of the device in the canal no great care must be spent.
  • An inventive device for detecting dashed lines indicated smoke 1 has a transmitter 2 and a receiver 3 on.
  • Transmitter 2 and receiver 3 are located preferably in a housing 4, which for example, can be embedded in a ceiling.
  • a cover 5 Between transmitter 2 and smoke 1 is a cover 5, which emits a beam 6 emitted by the transmitter 2 is let through. Likewise, there is another Cover 7 in front of the receiver 3, wherein the cover 7th a reflected beam 8 passes.
  • the transmitter 2 is preferably a separate receiver 9 as well a control receiver 10 assigned.
  • the receiver 3 in turn, a separate transmitter 11 and a control transmitter 12 assigned.
  • the actual smoke detection is done via the transmitter 2 and the receiver 3 according to Figure 2. If in a Smoke measurement zone is smoke 1, which is the transmitter 2 emitted radiation 6 is reflected on the smoke 1 and from the receiver 3 measured. The intensity of the reflection is a measure of the smoke density. Furthermore, results from a selected radiation or angle of incidence, the reflection distance, that is, it can also be determined how far the Smoke is removed from the inventive device.
  • the cover 5 or 7 dirty or taped so the radiation can not through the Cover 5/7 penetrate, but is reflected.
  • These reflected radiation is from the receiver 9 and the Receiver 3 determined.
  • the system can be set in this way be that also determines a percentage pollution becomes. This means, for example, that an error message is given only when the pollution is one has exceeded certain degree.
  • the setting can also happen so that with increasing pollution up to a certain level the smoke detection remains active.
  • a self test is also the desired device according to the invention. This one is in Figure 4 shown.
  • the self-test serve the Control receiver 10 and the control transmitter 12.
  • the transmitter 2 is tested by sending its signal from the receiver 10 directly Will be received. If the receiver 10 the radiation registered, it is found that the transmitter is functional.
  • the receiver 3 is tested by that of the transmitter 12 is illuminated. Does receiver 3 receive the radiation, he 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

The invention relates to a device for detecting smoke in a room for instance. A transmitter (2) for transmitting radiation that can be reflected by the smoke (1) and a receiver (3) that detects the radiation reflected by the smoke are provided.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur Erkennung von Rauch beispielsweise in einem Raum.The present invention relates to a device for Detection of 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 in a variety of forms and designs known and in the market. However, they work almost all according to a principle. To be detected, the smoke needs to be detected flow through the smoke detector. The procedure is known as scattered light method and requires that the Smoke comes into contact with the sensor. The consequence of this is that smoke detectors must protrude from the ceiling, a ceiling-flush installation is in accordance with the applicable European standard EN54 not possible. At the maintenance is it is necessary that the whole sensor head dismantled and to Manufacturer is sent. In practice, the Sensor heads replaced with new, because not to be maintained can be repaired by the manufacturer until the replaced come back waiting. As a result, it is necessary that twice the amount of smoke detectors from the Maintenance companies is stocked.

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 be without causing a detection of the manipulation comes. In addition, it is necessary that every single one 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 in that they easily get dirty in practice. are it pollutes, but they can no longer smoke detect.

Aus der US-A-4 011 458 ist eine Vorrichtung bekannt, wobei ein Sender zum Aussenden einer von dem Rauch in Raum reflektierbaren Strahlung und ein die vom Rauch reflektierte Strahlung erkennender Empfänger vorgesehen sind. Der vorliegenden Erfindung liegt die Aufgabe zugrunde eine Vorrichtung der o.g. Art zu schaffen, mit welcher auf einfache Art und Weise Rauch detektiert, eine Verschmutzung oder Sabotage erkannt bzw. der Rauchmelder auf seine Funktionsfähigkeit hin getestet wird. Hierdurch soll auch die Europäische Norm EN54 für Rauchmeldung leichter und besser erfüllbar sein.From US-A-4 011 458 a device is known, wherein a transmitter to Emitting a radiation that can be reflected by the smoke in space and one recognizing the radiation reflected by the smoke Receivers are provided. The present invention is based on the object Device of the o.g. Kind of creating with which simple way smoke detected, a pollution or sabotage detected or the smoke detector on his Functionality is tested. This should also the European standard EN54 for smoke alarm lighter and be more satisfiable.

Diese Anfgabe wird von ether Vorrichtung gemäß Anspruch 1 gelöst.This starting is achieved by ether device according to claim 1.

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. The type of radiation is from subordinate importance. For example, it may be a laser or light radiation of each wavelength (preferably in the infrared range) act, however also thought of ultrasound or radiation that works according to the ionization principle. All radiation sources can be used here, where guaranteed is that the emitted radiation through the smoke particles is reflected.

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 is the big Advantage in that the smoke detector is no longer of the Smoke must be flowed through, leaving a ceiling flush 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 is according to the invention a Licking pre-set. This cover ensures that all elements necessary for the measurement are not be polluted.

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.For detection (detection) of possibly occurring smoke the transmitter gives a radiation in the immediately below the Smoke detector lying room. Hits the radiation Smoke particles which form a reflection barrier can the receiver recognizes the reflected radiation. This is also the smoke detected. From the chosen one Radiation or angle of incidence also results in the Reflection distance, that is, the distance between smoke detectors and smoke.

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 the reflection time Determine there is a time difference between the time which is one from an opposite wall or Ground reflected radiation needed and the radiation, which is reflected by a closer room.

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 inventive device is also a self-diagnosis provided. For this, e.g. the transmitter the cover assigned a control receiver. For example, the transmitter will pulse a short Radiation emitted. Is this from the control receiver Radiation confirmed, so is the function of the transmitter 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 is from a Control transmitter a short, pulsed transmission radiation issued. Will by the receiver this radiation confirmed, so is the function of the receiver guaranteed.

Werden beide Signale, das des Senders und das des Empfängers, bestätigt, so kann auch Rauch detektiert werden.Are both signals, that of the transmitter and that of the Receiver, confirmed, so smoke can be detected become.

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 measurement zone and the Arrangement of each own transmitter and receiver can possible manipulation of the smoke detector, e.g. by Masking, be recognized. Here, the cover serves as Reflecting surface. Will the radiation at the Reflected surface, so it is from a own transmitter or receiver detected, which it is stated 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 pollution control of the Cover be performed. Camp on the Cover dust or dirt particles off, so the increases Signal value of the own receiver assigned to the transmitter and the main recipient steadily. Becomes a critical one Pollution value reached, the publication of a Maintenance signal. The resulting maintenance means normally only the cleaning of the cover. One Removal or replacement of the smoke detector sensor is not necessary.

Die neue erfindungsgemässe Vorrichtung zur Erkennung von Rauch kann auch durch Fremdstrahlung beeinflusst werden. The novel device according to the invention for detecting Smoke can also be influenced by extraneous 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.With light radiation this is above all one Sunlight or radiation from others Light sources, when using infrared radiation, can an infrared remote control or an infrared interface cause irritation from a printer. To this exclude, the receiver should a filter upstream of these extraneous radiations filters out. For example, becomes light as radiation used, the sensor receives the entire incoming Light radiation, but only converts the light radiation with the The frequency is then converted to DC voltage, which is then the Transmission signal results. The remaining light radiation is in AC voltage converted 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 so controlled that not already any deviation of the reflection to an alarm od. Like. leads. For example, one is Insect flyby, which happens to reflect the radiation, to pass as well as a cleaning lady with a Feather duster. Therefore be through a control program a plurality of recognition processes in a row added. Only if several recognition processes consecutive, a deviation of the reflection detect, it comes to an alarm triggering. Also a abrupt increase in the deviation of reflection still results not to a message, since it is known that smoke tends to a continuous increase in a Reflection deviation leads.

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 preferred as a unit educated. It can be designed as a stand-alone version its connections being through simple relay outputs be controlled.

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 whole system is flexible Microprocessor system can be controlled via a BUS. On the BUS each smoke detector communicates with a central office. An initialization sequence can cause a cable break be recognized, creating a completely unusual 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 passed. if the Devices are heavily polluted or sabotaged passed an error message. The error message includes the degree of pollution or sabotage and the number of the device where the event occurred is.

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 especially suitable also for installation in ducts of air conditioning systems, these Devices usually for triggering Fire dampers serve. For the previous smoke detectors In air conditioning ducts, it was important that the smoke detector in the correct direction was set to the flow direction. That is why in the past it often happened here Errors, especially if the flow direction was inconsistent and changed. For the inventive Device for detecting smoke is the Flow direction completely unimportant, so for the Arrangement of the device in the canal no great care must be spent.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung; diese zeigt in

  • Figur 1 eine schematische Darstellung einer erfindungsgemässen Vorrichtung zum Erkennen von Rauch;
  • Figuren 2 bis 4 schematische Darstellung von verschiedenen Funktionen der erfindungsgemässen Vorrichtung zur Erkennung von Rauch.
    • Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing; this shows in
  • Figure 1 is a schematic representation of an inventive device for detecting smoke;
  • Figures 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 inventive device for detecting dashed lines indicated smoke 1 has a transmitter 2 and a receiver 3 on. Transmitter 2 and receiver 3 are located preferably in a housing 4, which for example, can be embedded in a ceiling.

    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 transmitter 2 and smoke 1 is a cover 5, which emits a beam 6 emitted by the transmitter 2 is let through. Likewise, there is another Cover 7 in front of the receiver 3, wherein the cover 7th a reflected beam 8 passes.

    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 transmitter 2 is preferably a separate receiver 9 as well a control receiver 10 assigned. The receiver 3 in turn, a separate transmitter 11 and a control transmitter 12 assigned.

    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 Figur 2. Falls sich in einer Rauchmesszone Rauch 1 befindet, wird die von dem Sender 2 ausgesandte Strahlung 6 an dem Rauch 1 reflektiert und von dem Empfänger 3 gemessen. Die Intensität der Reflektion ist ein Mass für die Rauchdichte. Ferner resultiert aus einem gewählten Abstrahl- bzw. Einfallwinkel der Reflektionsabstand, d.h., es kann auch ermittelt werden, wie weit der Rauch von der erfindungsgemässen Vorrichtung entfernt ist.The actual smoke detection is done via the transmitter 2 and the receiver 3 according to Figure 2. If in a Smoke measurement zone is smoke 1, which is the transmitter 2 emitted radiation 6 is reflected on the smoke 1 and from the receiver 3 measured. The intensity of the reflection is a measure of the smoke density. Furthermore, results from a selected radiation or angle of incidence, the reflection distance, that is, it can also be determined how far the Smoke is removed from the inventive device.

    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 Figur 3 dargestellt ist. Sollte die Abdeckung 5 bzw. 7 verschmutzt oder abgeklebt sein, so kann die Strahlung nicht durch die Abdeckung 5/7 dringen, sondern wird reflektiert. Diese reflektierte Strahlung wird von dem Empfänger 9 bzw. dem Empfänger 3 ermittelt. Das System kann dabei so eingestellt sein, dass auch eine prozentuale Verschmutzung ermittelt wird. Das bedeutet beispielsweise, dass eine Fehlermeldung erst dann gegeben wird, wenn die Verschmutzung einen bestimmten Grad überschritten hat. Die Einstellung kann auch so geschehen, dass bei zunehmender Verschmutzung bis zu einer gewissen Höhe die Raucherkennung aktiv bleibt.Over time, it happens that the covers 5 and 7 pollute, or that they, for example, at Sabotage, to be covered. To determine this, are the own receiver 9 for the transmitter 2 and the own transmitter 11 provided for the receiver 3, as shown in FIG is shown. Should the cover 5 or 7 dirty or taped, so the radiation can not through the Cover 5/7 penetrate, but is reflected. These reflected radiation is from the receiver 9 and the Receiver 3 determined. The system can be set in this way be that also determines a percentage pollution becomes. This means, for example, that an error message is given only when the pollution is one has exceeded certain degree. The setting can also happen so that with increasing pollution up to a certain level the smoke detection remains active.

    In vielen Fällen ist auch ein Selbsttest der erfindungsgemässen Vorrichtung gewünscht. Dieser ist in Figur 4 dargestellt. Dem Selbsttest dienen der Kontrollempfänger 10 und der Kontrollsender 12. Der Sender 2 wird getestet, indem sein Signal vom Empfänger 10 direkt empfangen wird. Falls der Empfänger 10 die Strahlung registriert, ist festgestellt, dass der Sender funktionsfähig ist.In many cases, a self test is also the desired device according to the invention. This one is in Figure 4 shown. The self-test serve the Control receiver 10 and the control transmitter 12. The transmitter 2 is tested by sending its signal from the receiver 10 directly Will be received. If the receiver 10 the radiation registered, it is found that the transmitter is functional.

    Der Empfänger 3 wird dadurch getestet, dass der vom Sender 12 angestrahlt wird. Empfängt er Empfänger 3 die Strahlung, ist er funktionsfähig. The receiver 3 is tested by that of the transmitter 12 is illuminated. Does receiver 3 receive the radiation, he is functional.

    Bei defektem Sender und/oder Empfänger wird eine Fehlermeldung ausgegeben.If the transmitter and / or receiver is defective, a Error message issued.

    Claims (4)

    1. Apparatus for detecting smoke in a room, said apparatus having 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, characterized in that 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/or its own transmitter (11) is associated with the receiver (3) in front of the cover (7).
    2. 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.
    3. Apparatus according to claim 1 or 2, characterized in that a monitoring transmitter (122) is associated with the receiver (3).
    4. 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.
    EP00956437.8A 1999-10-26 2000-08-12 Device for detecting smoke Expired - Lifetime EP1224641B2 (en)

    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)

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    EP1224641A1 EP1224641A1 (en) 2002-07-24
    EP1224641B1 true EP1224641B1 (en) 2003-05-02
    EP1224641B2 EP1224641B2 (en) 2014-01-08

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    EP00956437.8A Expired - Lifetime EP1224641B2 (en) 1999-10-26 2000-08-12 Device for detecting smoke

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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)

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    WO2008043451A2 (en) 2006-10-09 2008-04-17 Schako Klima Luft Ferdinand Schad Kg Device for the detection of smoke in a room
    CN101300612B (en) * 2005-11-04 2010-11-03 西门子公司 Method for distinguishing operation of fire detector and fire and the fire detector
    DE102013003614A1 (en) 2013-02-20 2014-08-21 Job Lizenz Gmbh & Co Kg Detection device e.g. smoke detector, for detecting smoke in space, has evaluating device provided close to contamination and covering portion of outer surface of transparent component based on radiation received from photon detector
    DE102013002859A1 (en) 2013-02-20 2014-08-21 Job Lizenz Gmbh & Co Kg Fire/smoke detecting apparatus installed at ceiling/wall of room, has evaluation device that is provided to evaluate contamination on cover plate based on radiations emitted by radiation emitter and received by radiation receiver
    US9659485B2 (en) 2014-04-23 2017-05-23 Tyco Fire & Security Gmbh Self-testing smoke detector with integrated smoke source
    US9679468B2 (en) 2014-04-21 2017-06-13 Tyco Fire & Security Gmbh Device and apparatus for self-testing smoke detector baffle system
    WO2022243152A1 (en) * 2021-05-21 2022-11-24 Signify Holding B.V. A control device for reconfiguring a radiofrequency-based sensing system and a method thereof

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    DE10066246A1 (en) † 2000-09-22 2005-10-06 Robert Bosch Gmbh 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.
    DE102011108389A1 (en) 2011-07-22 2013-01-24 PPP "KB Pribor" Ltd. smoke detector
    DE102011108390B4 (en) 2011-07-22 2019-07-11 PPP "KB Pribor" Ltd. Method of making an open type smoke detector
    DE102013101280A1 (en) 2013-02-08 2014-08-14 Schako Klima Luft Ferdinand Schad Kg smoke detector
    EP2765566A3 (en) 2013-02-08 2014-11-05 SCHAKO Klima Luft Ferdinand Schad KG Smoke alarm
    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
    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

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    Publication number Priority date Publication date Assignee Title
    CN101300612B (en) * 2005-11-04 2010-11-03 西门子公司 Method for distinguishing operation of fire detector and fire and the fire detector
    WO2008043451A2 (en) 2006-10-09 2008-04-17 Schako Klima Luft Ferdinand Schad Kg Device for the detection of smoke in a room
    DE102013003614A1 (en) 2013-02-20 2014-08-21 Job Lizenz Gmbh & Co Kg Detection device e.g. smoke detector, for detecting smoke in space, has evaluating device provided close to contamination and covering portion of outer surface of transparent component based on radiation received from photon detector
    DE102013002859A1 (en) 2013-02-20 2014-08-21 Job Lizenz Gmbh & Co Kg Fire/smoke detecting apparatus installed at ceiling/wall of room, has evaluation device that is provided to evaluate contamination on cover plate based on radiations emitted by radiation emitter and received by radiation receiver
    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
    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
    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
    WO2022243152A1 (en) * 2021-05-21 2022-11-24 Signify Holding B.V. A control device for reconfiguring a radiofrequency-based sensing system and a method thereof

    Also Published As

    Publication number Publication date
    DE19951403B4 (en) 2010-01-07
    ES2198348T3 (en) 2004-02-01
    EP1224641A1 (en) 2002-07-24
    DE19951403A1 (en) 2001-05-03
    ATE239281T1 (en) 2003-05-15
    DE50002015D1 (en) 2003-06-05
    AU6838000A (en) 2001-05-08
    WO2001031602A1 (en) 2001-05-03
    ES2198348T5 (en) 2014-02-28
    EP1224641B2 (en) 2014-01-08

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