WO2003102889A1 - Fire detector and fire detection system - Google Patents

Fire detector and fire detection system Download PDF

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Publication number
WO2003102889A1
WO2003102889A1 PCT/CH2003/000336 CH0300336W WO03102889A1 WO 2003102889 A1 WO2003102889 A1 WO 2003102889A1 CH 0300336 W CH0300336 W CH 0300336W WO 03102889 A1 WO03102889 A1 WO 03102889A1
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WIPO (PCT)
Prior art keywords
sensor
fire
sensors
room
fire detector
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Application number
PCT/CH2003/000336
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German (de)
French (fr)
Inventor
Gustav Pfister
Original Assignee
Siemens Building Technologies Ag
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Publication date
Application filed by Siemens Building Technologies Ag filed Critical Siemens Building Technologies Ag
Priority to AU2003229229A priority Critical patent/AU2003229229A1/en
Publication of WO2003102889A1 publication Critical patent/WO2003102889A1/en

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/18—Prevention or correction of operating errors
    • G08B29/183—Single detectors using dual technologies
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/194—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems
    • G08B13/196—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using image scanning and comparing systems using television cameras
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
    • G08B17/125—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
    • G08B19/005—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow combined burglary and fire alarm systems

Definitions

  • the present invention relates to a fire detector with at least one sensor for a fire parameter, the signals of which are fed to evaluation electronics.
  • Fire detectors of this type are known today in a number of designs, the evaluation electronics checking whether the sensor signal fulfills certain fire criteria. For example, the sensor signal is compared with one or more threshold values and a pre-alarm or alarm is triggered when they are exceeded, or a fuzzy logic check is carried out to determine whether the sensor signal fulfills certain fuzzy rules.
  • the evaluation electronics can be provided either peripherally in the fire detector itself or in a control center.
  • sensors for fire parameters are, in particular, optical sensors for measuring the scattered light caused by smoke, temperature sensors for measuring the heat caused by a fire and gas sensors for detecting fire gases occurring in the event of a fire.
  • These sensors can either be provided individually, then one speaks of a scattered light, temperature or fire gas detector, or they can be used in any combination in so-called multi-criteria detectors.
  • a multi-criteria detector with an optical sensor, a temperature sensor and a fire gas sensor is described for example in EP-A-1 103 937 and in WO-A-00 14693, a fire detector with a camera in DE-A-100 11 411.
  • sensors such as gas sensors or sensors for controlling the air conditioning / heating of the building in question, or also motion sensors for the detection of intruders are generally provided in a building in addition to fire detectors, all of these different types of sensors having their own wiring, Show energy supply and evaluation, which naturally causes not inconsiderable costs.
  • the invention is intended to provide a solution which, in conjunction with a fire alarm system with fire detectors, enables these costs to be reduced. According to the invention, this object is achieved in that the signals of the at least one sensor are provided in addition to fire detection for at least one further application.
  • a first preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor is formed by a temperature sensor, a gas sensor or a camera, or that any combination of these sensors is provided.
  • the fire detector preferably has an optical sensor for measuring scattered light and one or more of the sensors mentioned.
  • a second preferred embodiment of the fire detector according to the invention is characterized in that the signals of the at least one sensor or the plurality of sensors are used to control the conditioning of the room in question.
  • a third preferred embodiment is characterized in that the at least one sensor or one of the sensors is formed by a temperature sensor and that its signal is additionally used to control the heating / air conditioning of the room in question.
  • a fourth preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor or one of the sensors is formed by a gas sensor and that its signal is additionally used for controlling the ventilation of the room in question.
  • a fifth preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor or one of the sensors is formed by a gas sensor and that its signal is additionally used for the detection of a specific gas.
  • a further preferred embodiment is characterized in that the at least one sensor or one of the sensors is formed by a camera and that its signal is additionally used to control the lighting of the room in question.
  • a further preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor or one of the sensors is formed by a camera and that its signal is additionally used for the detection of the presence of people in the room in question.
  • the presence of people in the room in question is preferably used to control the room conditioning and / or the room lighting and / or to emit an alarm signal indicating an unauthorized intruder.
  • the invention further relates to a fire alarm system with fire alarms of the type mentioned connected to an alarm center.
  • the fire alarm system according to the invention is characterized in that the fire alarms are additionally connected to a house control center for building management.
  • the fire detector 1 shown contains an optical sensor 2 for scattered light measurement, which is expanded by additional sensors for fire parameters. These additional sensors are a temperature sensor 3, a gas sensor 4 and a camera 5. The outputs of all the sensors mentioned are led to an evaluation electronics 6. The structure of such detectors is known and is not described in detail here; in this connection reference is made to EP-A-1 103 937 and WO-A-00 14693.
  • fire detector 1 does not have to have all of the sensors mentioned in order to enable the monitoring of further parameters (in addition to fire detection). Basically, with one exception, such monitoring is possible with each of the sensors shown, alone or in combination with the other sensors. This one exception concerns the case in which the fire detector has only the optical sensor 2 for measuring the scattered light. In this case, the fire detector would be a pure scattered light detector that cannot be used for any other application.
  • Temperature sensor 3 temperature detector
  • temperature sensor 3 plus optical sensor 2 temperature / stray light detector
  • Gas sensor 4 fire gas detector
  • gas sensor 4 plus optical sensor 2 fire gas / stray light detector
  • the signals from the sensors 2 and / or 3 and / or 4 and / or 5 are processed in a known manner in the evaluation electronics 6. While the camera 5 is used to evaluate its signal using image processing methods, the signals of all other sensors are compared with an alarm threshold and preferably at least one pre-alarm threshold and the evaluation electronics 6 emits if the or the alarm threshold is exceeded by the transmitter. sorsignal or upon detection of smoke or fire in the image recorded by the camera 5 at an output 7 from an alarm signal. Intelligent signal processing using fuzzy logic or a neural network, for example, ensures that the alarm signal is given at the lowest possible values for the relevant fire parameter (s) without causing unacceptable false alarms.
  • the alarm signal activates an alarm display arranged in the fire detector 1 and, on the other hand, it is fed to an alarm center 8, which then triggers the necessary measures (alarming the fire brigade, evacuation of people, automatic extinguishing, etc.).
  • the evaluation electronics 6 do not need to be decentralized in the detector 1, but could also be provided centrally in the alarm center 8.
  • the arrangement described so far largely corresponds to that of known fire detectors.
  • the additional benefit of the fire detector 1 according to the invention is that the signals from the temperature sensor 3 and / or the gas sensor 4 and / or the camera 5 are used for the investigation of additional parameters, for example for gas detection, and in the broadest sense for building management, under building management the conditioning of the rooms, in particular their air conditioning / heating / ventilation / lighting is to be understood.
  • evaluation electronics 6 additionally compares the signal from temperature sensor 3 with a heating / cooling curve and, in the event of deviations via output 9, delivers a corresponding control signal to a central house unit 10.
  • sensor constellation 2 the additional benefit depends on the type of detection Gases off. If CQ is to be detected, the ventilation can be controlled using the C0 2 concentration; if CO or NO x is to be detected, the fire detector 1 can also be used as a gas detector to monitor the concentration of these gases.
  • a suitable CO sensor reference is made to EP-B-0 612 408
  • the light intensity in the relevant room can be measured in the evaluation electronics 6 and the lighting can be controlled accordingly via the output 9. Or it can be determined from the image recorded by the camera 5 whether and how many people are in the room in question and these parameters can then be used to control the room conditioning (air conditioning / heating / ventilation) and / or the lighting.

Abstract

Disclosed is a fire detector comprising at least one sensor detecting a fire parameter, the signals of which are supplied to evaluation electronics (6). The signals of the at least one sensor (3, 4, 5) are made available for at least one further application in addition to the detection of a fire. The at least one sensor is formed by a temperature sensor (3), a gas sensor (4), or a camera (5) or can comprise any combination of said sensors (3, 4, 5). The signals of the at least one sensor (3, 4, 5) or the several sensors are used for controlling conditioning of the respective room. Also disclosed is a fire detection system comprising fire detectors (1) of said kind, which are connected to an alarm center (8) as well as an in-house center (10) for the building management.

Description

Brandmelder und Brandmeideanlage Fire alarm and fire prevention system
Beschreibungdescription
Die vorliegende Erfindung betrifft einen Brandmelder mit mindestens einem Sensor für eine Brandkenngrösse, dessen Signale einer Auswerteelektronik zugeführt sind.The present invention relates to a fire detector with at least one sensor for a fire parameter, the signals of which are fed to evaluation electronics.
Brandmelder dieser Art sind heute in einer Reihe von Ausführungen bekannt, wobei in der Auswerteelektronik überprüft wird, ob das Sensorsignal gewisse Brandkriterien erfüllt. So wird beispielsweise das Sensorsignal mit einem oder mehreren Schwellwerten verglichen und bei deren Überschreitung ein Voralarm oder Alarm ausgelöst, oder es wird mit einer Fuzzy-Logiküber- prüft, ob das Sensorsignal bestimmte Fuzzy-Regeln erfüllt. Dabei kann die Auswerteelektronik entweder peripher im Brandmelder selbst oder auch in einer Zentrale vorgesehen sein.Fire detectors of this type are known today in a number of designs, the evaluation electronics checking whether the sensor signal fulfills certain fire criteria. For example, the sensor signal is compared with one or more threshold values and a pre-alarm or alarm is triggered when they are exceeded, or a fuzzy logic check is carried out to determine whether the sensor signal fulfills certain fuzzy rules. The evaluation electronics can be provided either peripherally in the fire detector itself or in a control center.
Bekannte Sensoren für Brandkenngrössen sind insbesondere optische Sensoren zur Messung des durch Rauch verursachten Streulichts, Temperatursensoren zur Messung der durch einen Brand verursachten Wärme und Gassensoren zur Detektion von bei einem Brand auftretenden Brandgasen. Diese Sensoren können entweder einzeln für sich vorgesehen sein, man spricht dann von einem Streulicht-, Temperatur- oder Brandgasmelder, oder sie können in beliebigen Kombinationen in so genannten Mehrkriterienmeldern Verwendung finden. Es wurde auch schon vorgeschlagen, als Sensor eine Kamera zu verwenden und das Auftreten von Rauch mit Methoden der Bildverarbeitung zu detektieren. Ein Mehrkriterienmelder mit einem optischen Sensor, einem Temperatursensor und einem Brandgassensor ist beispielsweise in der EP-A-1 103 937 und in der WO-A-00 14693 beschrieben, ein Brandmelder mit einer Kamera in der DE- A-100 11 411.Known sensors for fire parameters are, in particular, optical sensors for measuring the scattered light caused by smoke, temperature sensors for measuring the heat caused by a fire and gas sensors for detecting fire gases occurring in the event of a fire. These sensors can either be provided individually, then one speaks of a scattered light, temperature or fire gas detector, or they can be used in any combination in so-called multi-criteria detectors. It has also been proposed to use a camera as a sensor and to detect the occurrence of smoke using image processing methods. A multi-criteria detector with an optical sensor, a temperature sensor and a fire gas sensor is described for example in EP-A-1 103 937 and in WO-A-00 14693, a fire detector with a camera in DE-A-100 11 411.
Bekanntlich sind in einem Gebäude in der Regel neben Brandmeldern noch weitere Sensoren, wie beispielsweise Gassensoren oder Fühler für die Steuerung der Klimatisierung/Heizung des betreffenden Gebäudes oder auch Bewegungssensoren für die Detektion von Eindringlingen vorgesehen, wobei alle diese verschiedenen Arten von Sensoren eine eigene Verdrahtung, Energieversorgung und Auswertung aufweisen, was naturgemäss nicht unbeträchtliche Kosten verursacht.As is known, other sensors, such as gas sensors or sensors for controlling the air conditioning / heating of the building in question, or also motion sensors for the detection of intruders are generally provided in a building in addition to fire detectors, all of these different types of sensors having their own wiring, Show energy supply and evaluation, which naturally causes not inconsiderable costs.
Durch die Erfindung soll nun eine Lösung angegeben werden, die in Verbindung mit einer Brandmeldeanlage mit Brandmeldern eine Reduktion dieser Kosten ermöglicht. Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Signale des mindestens einen Sensors zusätzlich zur Branddetektion für mindestens eine weitere Applikation zur Verfügung gestellt sind.The invention is intended to provide a solution which, in conjunction with a fire alarm system with fire detectors, enables these costs to be reduced. According to the invention, this object is achieved in that the signals of the at least one sensor are provided in addition to fire detection for at least one further application.
Mit der erfindungsgemässen Lösung wird also vorgeschlagen, das Signal des oder eines in einem Brandmelder vorhandenen Sensors für die Untersuchung weiterer Parameter zu verwenden, so dass gegebenenfalls auf die Anbringung zusätzlicher Sensoren /Fühler verzichtet werden kann, was sich in einer entsprechenden Kostenreduktion niederschlagen sollte.With the solution according to the invention, it is therefore proposed to use the signal of the sensor or of a sensor present in a fire detector for the examination of further parameters, so that it may be possible to dispense with the attachment of additional sensors / sensors, which should be reflected in a corresponding cost reduction.
Eine erste bevorzugte Ausführungsform des erfindungsgemässen Brandmelders ist dadurch gekennzeichnet, dass der mindestens eine Sensor durch einen Temperatursensor, einen Gassensor oder eine Kamera gebildet, oder dass eine beliebige Kombination dieser Sensoren vorgesehen ist. Vorzugsweise weist der Brandmelder einen optischen Sensor zur Streulichtmessung und einen oder mehrere der genannten Sensoren auf.A first preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor is formed by a temperature sensor, a gas sensor or a camera, or that any combination of these sensors is provided. The fire detector preferably has an optical sensor for measuring scattered light and one or more of the sensors mentioned.
Eine zweite bevorzugte Ausführungsform des erfindungsgemässen Brandmelders ist dadurch gekennzeichnet, dass die Signale des mindestens einen Sensors oder der mehreren Sensoren zur Steuerung der Konditionierung des betreffenden Raumes verwendet werden.A second preferred embodiment of the fire detector according to the invention is characterized in that the signals of the at least one sensor or the plurality of sensors are used to control the conditioning of the room in question.
Eine dritte bevorzugte Ausführungsform ist dadurch gekennzeichnet, dass der mindestens eine Sensor oder einer der Sensoren durch einen Temperatursensor gebildet ist, und dass sein Signal zusätzlich für die Steuerung der Heizung/Klimatisierung des betreffenden Raumesverwendet wird.A third preferred embodiment is characterized in that the at least one sensor or one of the sensors is formed by a temperature sensor and that its signal is additionally used to control the heating / air conditioning of the room in question.
Eine vierte bevorzugte Ausführungsform des erfindungsgemässen Brandmelders ist dadurch gekennzeichnet, dass der mindestens eine Sensor oder einer der Sensoren durch einen Gassensor gebildet ist, und dass sein Signal zusätzlich für die Steuerung der Lüftung desbetreffenden Raumes verwendet wird.A fourth preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor or one of the sensors is formed by a gas sensor and that its signal is additionally used for controlling the ventilation of the room in question.
Eine fünfte bevorzugte Ausführungsform des erfindungsgemässen Brandmelders ist dadurch gekennzeichnet, dass der mindestens eine Sensor oder einer der Sensoren durch einen Gassensor gebildet ist, und dass sein Signal zusätzlich für die Detektion eines bestimmten Gases verwendet wird.A fifth preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor or one of the sensors is formed by a gas sensor and that its signal is additionally used for the detection of a specific gas.
Eine weitere bevorzugte Ausführungsform ist dadurch gekennzeichnet, dass der mindestens eine Sensor oder einer der Sensoren durch eine Kamera gebildet ist, und dass sein Signal zusätzlich für die Steuerung der Beleuchtung des betreffenden Raumes verwendet wird.A further preferred embodiment is characterized in that the at least one sensor or one of the sensors is formed by a camera and that its signal is additionally used to control the lighting of the room in question.
Eine weitere bevorzugte Ausführungsform des erfindungsgemässen Brandmelders ist dadurch gekennzeichnet, dass der mindestens eine Sensor oder einer der Sensoren durch eine Kamera gebildet ist, und dass sein Signal zusätzlich für die Detektion der Anwesenheit von Personen in dem betreffenden Raum verwendet wird. Vorzugsweise erfolgt an Hand der Detektion der Anwesenheit von Personen in dem betreffenden Raum eine Steuerung der Raumkonditionierung und/oder der Raumbeleuchtung und/oder die Abgabe eines einen unerlaubten Eindringling anzeigenden Alarmsignals.A further preferred embodiment of the fire detector according to the invention is characterized in that the at least one sensor or one of the sensors is formed by a camera and that its signal is additionally used for the detection of the presence of people in the room in question. The presence of people in the room in question is preferably used to control the room conditioning and / or the room lighting and / or to emit an alarm signal indicating an unauthorized intruder.
Die Erfindung betrifft weiter eine Brandmeldeanlage mit an eine Alarmzentraleangeschlosse- nen Brandmeldern der genannten Art. Die erfindungsgemässe Brandmeldeanlage ist dadurch gekennzeichnet, dass die Brandmelder zusätzlich an eine Hauszentrale für das Gebäudemanagement angeschlossen sind.The invention further relates to a fire alarm system with fire alarms of the type mentioned connected to an alarm center. The fire alarm system according to the invention is characterized in that the fire alarms are additionally connected to a house control center for building management.
Im Folgenden wird die Erfindung an Hand eines in der einzigen Zeichnung dargestelltenAus- führungsbeispiels, welches ein Blockschema eines erfindungsgemässen Brandmelders zeigt, näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment shown in the single drawing, which shows a block diagram of a fire detector according to the invention.
Der dargestellte Brandmelder 1 enthält einen optischen Sensor 2 zur Streulichtmessung, der um zusätzliche Sensoren für Brandkenngrössen erweitert ist. Diese zusätzlichen Sensoren sind ein Temperatursensor 3, ein Gassensor 4 und eine Kamera 5. Die Ausgänge aller genannten Sensoren sind zu einer Auswerteelektronik 6 geführt. Der Aufbau derartiger Melder ist bekannt und wird hier nicht näher beschrieben; es wird in diesem Zusammenhang auf die EP-A-1 103 937 und die WO-A-00 14693 verwiesen.The fire detector 1 shown contains an optical sensor 2 for scattered light measurement, which is expanded by additional sensors for fire parameters. These additional sensors are a temperature sensor 3, a gas sensor 4 and a camera 5. The outputs of all the sensors mentioned are led to an evaluation electronics 6. The structure of such detectors is known and is not described in detail here; in this connection reference is made to EP-A-1 103 937 and WO-A-00 14693.
Es sei darauf hingewiesen, dass der Brandmelder 1 nicht alle der genannten Sensoren aufweisen muss, um die Überwachung weiterer Parameter (zusätzlich zur Branddetektion) zu ermöglichen. Grundsätzlich ist eine derartige Überwachung bis auf eine Ausnahme mit jedem der dargestellten Sensoren alleine oder in Kombination mit den anderen Sensoren möglich. Diese eine Ausnahme betrifft den Fall, dass der Brandmelder nur den optischen Sensor 2 zurStreu- lichtmessung aufweist. Der Brandmelder wäre in diesem Fall ein reiner Streulichtmelder, der für keine anderen Applikationen verwendet werden kann.It should be pointed out that fire detector 1 does not have to have all of the sensors mentioned in order to enable the monitoring of further parameters (in addition to fire detection). Basically, with one exception, such monitoring is possible with each of the sensors shown, alone or in combination with the other sensors. This one exception concerns the case in which the fire detector has only the optical sensor 2 for measuring the scattered light. In this case, the fire detector would be a pure scattered light detector that cannot be used for any other application.
Folgende Sensorkonstellationen sind möglich:The following sensor configurations are possible:
1. Temperatursensor 3 (Temperaturmelder) oder Temperatursensor 3 plus optischer Sensor 2 (Temperatur-/Streulichtmelder).1. Temperature sensor 3 (temperature detector) or temperature sensor 3 plus optical sensor 2 (temperature / stray light detector).
2. Gassensor 4 (Brandgasmelder) oder Gassensor 4 plus optischer Sensor 2 (Brandgas-/ Streulichtmelder).2. Gas sensor 4 (fire gas detector) or gas sensor 4 plus optical sensor 2 (fire gas / stray light detector).
3. Kamera 5 (siehe dazu DE-A-100 11 411).3. Camera 5 (see DE-A-100 11 411).
4. Kombination Temperatursensor 3 plus Gassensor 4 (plus optischer Sensor 2).4. Combination of temperature sensor 3 plus gas sensor 4 (plus optical sensor 2).
5. Kombination Kamera 5 plus Temperatursensor 3 und/oder Gassensor 4.5.Combination camera 5 plus temperature sensor 3 and / or gas sensor 4.
In der Auswerteelektronik 6 werden die Signale der Sensoren 2 und/oder 3 und/oder 4 und/oder 5 in bekannter Weise verarbeitet. Während bei Verwendung der Kamera 5 deren Signal mit Methoden der Bildverarbeitung ausgewertet wird, werden die Signale aller anderen Sensoren mit einer Alarmschwelle und vorzugsweise mindestens einer Voralarmschwelle verglichen und die Auswerteelektronik 6 gibt bei Überschreiten der oder einer Alarmschwelle durch dasSen- sorsignal oder bei Detektion von Rauch oder Feuer in dem von der Kamera 5 aufgenommenen Bild an einem Ausgang 7 ein Alarmsignal ab. Dabei ist durch intelligente Signalverarbeitung unter Verwendung von beispielsweise Fuzzy-Logik oder eines neuronalen Netzwerks, gewährleistet, dass die Abgabe des Alarmsignals bei möglichst tiefen Werten der betreffenden Brand- kenngrösse(n) erfolgt, ohne dass es dabei zu unakzeptablen Fehlalarmen kommt. DasAlarm- signal aktiviert einerseits eine im Brandmelder 1 angeordnete Alarmanzeige und wird andererseits einer Alarmzentrale 8 zugeführt, die dann die nötigen Massnahmen (Alarmierung der Feuerwehr, Evakuation von Personen, automatische Löschung, usw.) auslöst. Selbstverständlich braucht die Auswerteelektronik 6 nicht dezentral im Melder 1 sondern könnte auch zentral in der Alarmzentrale 8 vorgesehen sein.The signals from the sensors 2 and / or 3 and / or 4 and / or 5 are processed in a known manner in the evaluation electronics 6. While the camera 5 is used to evaluate its signal using image processing methods, the signals of all other sensors are compared with an alarm threshold and preferably at least one pre-alarm threshold and the evaluation electronics 6 emits if the or the alarm threshold is exceeded by the transmitter. sorsignal or upon detection of smoke or fire in the image recorded by the camera 5 at an output 7 from an alarm signal. Intelligent signal processing using fuzzy logic or a neural network, for example, ensures that the alarm signal is given at the lowest possible values for the relevant fire parameter (s) without causing unacceptable false alarms. On the one hand, the alarm signal activates an alarm display arranged in the fire detector 1 and, on the other hand, it is fed to an alarm center 8, which then triggers the necessary measures (alarming the fire brigade, evacuation of people, automatic extinguishing, etc.). Of course, the evaluation electronics 6 do not need to be decentralized in the detector 1, but could also be provided centrally in the alarm center 8.
Die bisher beschriebene Anordnung entspricht weitgehend derjenigen bekannter Brandmelder. Der erfindungsgemässe Zusatznutzen des Brandmelders 1 besteht nun darin, dass die Signale des Temperatursensors 3 und/oder des Gassensors 4 und/oder der Kamera 5 für die Untersuchung zusätzlicher Parameter, beispielsweise fürGasdetektion, und im weitesten Sinn für das Gebäudemanagement verwendet werden, wobei unter Gebäudemanagement dieKonditionie- rung der Räume, insbesondere deren Klimatisierung/Heizung/Lüftung/Beleuchtung zu verstehen ist.The arrangement described so far largely corresponds to that of known fire detectors. The additional benefit of the fire detector 1 according to the invention is that the signals from the temperature sensor 3 and / or the gas sensor 4 and / or the camera 5 are used for the investigation of additional parameters, for example for gas detection, and in the broadest sense for building management, under building management the conditioning of the rooms, in particular their air conditioning / heating / ventilation / lighting is to be understood.
Bei der Sensorkonstellation 1 vergleicht die Auswerteelektronik 6 das Signal des Temperatursensors 3 zusätzlich mit einer Heiz-/Kühlkurve und liefert bei Abweichungen über einenAus- gang 9 ein entsprechendes Steuersignal an eine Hauszentrale 10. Bei der Sensorkonstellation 2 hängt der Zusatznutzen von der Art des zu detektierenden Gases ab. Wenn CQ detektiert werden soll, kann an Hand der C02-Konzentration die Belüftung gesteuert werden, wenn CO oder NOx detektiert werden soll, kann der Brandmelder 1 zusätzlich als Gasmelder zurüber- wachung der Konzentration dieser Gase verwendet werden. Bezüglich eines geeigneten CO- Sensors wird auf die EP-B-0 612 408 verwiesenWith sensor constellation 1, evaluation electronics 6 additionally compares the signal from temperature sensor 3 with a heating / cooling curve and, in the event of deviations via output 9, delivers a corresponding control signal to a central house unit 10. With sensor constellation 2, the additional benefit depends on the type of detection Gases off. If CQ is to be detected, the ventilation can be controlled using the C0 2 concentration; if CO or NO x is to be detected, the fire detector 1 can also be used as a gas detector to monitor the concentration of these gases. With regard to a suitable CO sensor, reference is made to EP-B-0 612 408
Bei der Sensorkonstellation 3 kann in der Auswerteelektronik 6 die Lichtstärke im betreffenden Raum gemessen und über den Ausgang 9 die Beleuchtung entsprechend gesteuert werden. Oder es kann an Hand des von der Kamera 5 aufgenommenen Bildes festgestellt werden, ob und wie viele Personen sich in dem betreffenden Raum befinden und diese Parameter können dann zur Steuerung der Raumkonditionierung (Klimatisierung/Heizung/Lüftung) und/oder der Beleuchtung verwendet werden.With the sensor constellation 3, the light intensity in the relevant room can be measured in the evaluation electronics 6 and the lighting can be controlled accordingly via the output 9. Or it can be determined from the image recorded by the camera 5 whether and how many people are in the room in question and these parameters can then be used to control the room conditioning (air conditioning / heating / ventilation) and / or the lighting.
In Abhängigkeit von weiteren Randbedingungen, wie beispielsweise der Tageszeit oder des Wochentags, kann die Anwesenheit von unberechtigten Personen in dem betreffenden Raum detektiert und gegebenenfalls ein Einbruchalarm ausgelöst werden. Letzterer würdevorzugs- weise über den Ausgang 7 an die Alarmzentrale 8 weiter geleitet. Bei den Sensorkonstellationen 4 und 5 werden die Konstellationen 1 und 2 bzw. 3 und 1 und/oder 2 kombiniert. Depending on other boundary conditions, such as the time of day or the day of the week, the presence of unauthorized persons in the room in question can be detected and, if necessary, a burglar alarm triggered. The latter would preferably be forwarded to the alarm center 8 via the output 7. In sensor constellations 4 and 5, constellations 1 and 2 or 3 and 1 and / or 2 are combined.

Claims

Patentansprüche claims
1. Brandmelder mit mindestens einem Sensor für eine Brandkenngrösse, dessen Signale einer Auswerteelektronik (6) zugeführt sind, dadurch gekennzeichnet, dass die Signale des mindestens einen Sensors (3, 4, 5) zusätzlich zur Branddetektion für mindestens eine weitere Applikation zur Verfügung gestellt sind.1. Fire detector with at least one sensor for a fire parameter, the signals of which are fed to evaluation electronics (6), characterized in that the signals of the at least one sensor (3, 4, 5) are provided in addition to fire detection for at least one further application ,
2. Brandmelder nach Anspruch 1, dadurch gekennzeichnet, dass der mindestens eine Sensor durch einen Temperatursensor (3), einen Gassensor (4) oder eine Kamera (5) gebildet, oder dass eine beliebige Kombination dieser Sensoren (3, 4, 5) vorgesehen ist.2. Fire detector according to claim 1, characterized in that the at least one sensor is formed by a temperature sensor (3), a gas sensor (4) or a camera (5), or that any combination of these sensors (3, 4, 5) is provided is.
3. Brandmeider nach Anspruch 2, gekennzeichnet durch einen optischen Sensor (2) zurStreu- lichtmessung.3. Fire avoidance device according to claim 2, characterized by an optical sensor (2) for measuring the scattered light.
4. Brandmelder nach Anspruch 2, dadurch gekennzeichnet, dass die Signale des mindestens einen Sensors (3, 4, 5) oder der mehreren Sensoren zur Steuerung der Konditionierung des betreffenden Raumes verwendet werden.4. Fire detector according to claim 2, characterized in that the signals of the at least one sensor (3, 4, 5) or the plurality of sensors are used to control the conditioning of the room in question.
5. Brandmelder nach Anspruch 4, dadurch gekennzeichnet, dass der mindestens eine Sensor oder einer der Sensoren durch einen Temperatursensor (3) gebildet ist, und dass sein Signal zusätzlich für die Steuerung der Heizung/Klimatisierung des betreffenden Raumes verwendet wird.5. Fire detector according to claim 4, characterized in that the at least one sensor or one of the sensors is formed by a temperature sensor (3), and that its signal is additionally used for controlling the heating / air conditioning of the room in question.
6. Brandmelder nach einem der Anspruch 4 oder 5, dadurch gekennzeichnet, dass dermin- destens eine Sensor oder einer der Sensoren durch einen Gassensor (4) gebildet ist, und dass sein Signal zusätzlich für die Steuerung der Lüftung des betreffenden Raumesverwendet wird.6. Fire detector according to one of claims 4 or 5, characterized in that at least one sensor or one of the sensors is formed by a gas sensor (4) and that its signal is additionally used to control the ventilation of the room in question.
7. Brandmelder nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass dermindes- tens eine Sensor oder einer der Sensoren durch einen Gassensor (4) gebildet ist, und dass sein Signal zusätzlich für die Detektion eines bestimmten Gases verwendet wird.7. Fire detector according to one of claims 4 to 6, characterized in that at least one sensor or one of the sensors is formed by a gas sensor (4) and that its signal is additionally used for the detection of a specific gas.
8. Brandmelder nach einem der Ansprüche 4 bis 7, dadurch gekennzeichnet, dass dermindes- tens eine Sensor oder einer der Sensoren durch eine Kamera (5) gebildet ist, und dass sein Signal zusätzlich für die Steuerung der Beleuchtung des betreffenden Raumes verwendet wird.8. Fire detector according to one of claims 4 to 7, characterized in that at least one sensor or one of the sensors is formed by a camera (5) and that its signal is additionally used for controlling the lighting of the room in question.
9. Brandmelder nach einem der Ansprüche 4 bis 8, dadurch gekennzeichnet, dass dermindes- tens eine Sensor oder einer der Sensoren durch eine Kamera (5) gebildet ist, und dass sein Signal zusätzlich für die Detektion der Anwesenheit von Personen in dem betreffenden Raum verwendet wird. 9. Fire detector according to one of claims 4 to 8, characterized in that at least one sensor or one of the sensors is formed by a camera (5) and that its signal is additionally used for the detection of the presence of people in the room in question becomes.
10. Brandmelder nach Anspruch 9, dadurch gekennzeichnet, dass an Hand der Detektion der Anwesenheit von Personen in dem betreffenden Raum eine Steuerung derRaumkonditio- nierung und/oder der Raumbeleuchtung und/oder die Abgabe eines einen unerlaubten Eindringling anzeigenden Alarmsignals erfolgt.10. Fire detector according to claim 9, characterized in that the presence of people in the room in question is used to control the room conditioning and / or the room lighting and / or to emit an alarm signal indicating an unauthorized intruder.
11. Brandmeldeanlage mit an eine Alarmzentrale (8) angeschlossenen Brandmeldern (1) nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Brandmelder (^zusätzlich an eine Hauszentrale (10) für das Gebäudemanagement angeschlossen sind. 11. Fire alarm system with fire alarms (1) connected to an alarm center (8) according to one of claims 1 to 10, characterized in that the fire alarms (^ are additionally connected to a house control center (10) for building management.
PCT/CH2003/000336 2002-06-04 2003-05-30 Fire detector and fire detection system WO2003102889A1 (en)

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US11270575B2 (en) 2018-12-07 2022-03-08 Carrier Corporation Method of optical alignment and verification of field of view integrity for a flame detector and system

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