EP2631885B1 - Method for controlling a hazard warning device and hazard warning device - Google Patents

Method for controlling a hazard warning device and hazard warning device Download PDF

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Publication number
EP2631885B1
EP2631885B1 EP13000372.6A EP13000372A EP2631885B1 EP 2631885 B1 EP2631885 B1 EP 2631885B1 EP 13000372 A EP13000372 A EP 13000372A EP 2631885 B1 EP2631885 B1 EP 2631885B1
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Prior art keywords
apparatuses
trigger
alarm
identification data
hazard
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EP13000372.6A
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German (de)
French (fr)
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EP2631885A3 (en
EP2631885A2 (en
Inventor
Gerhard Röpke
Stefan Janus
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DETECTOMAT GmbH
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Detectomat GmbH
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
    • G08B7/066—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources guiding along a path, e.g. evacuation path lighting strip
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Definitions

  • the invention relates to a method for controlling a hazard alarm system and to a hazard alarm system.
  • hazard alarm systems often have a fire alarm center to which a large number of hazard alarms and alarm devices are connected.
  • the individual hazard detectors can then be monitored via the fire alarm control panel.
  • the fire alarm center can activate some or all of the alarm devices so that, for example, the building can be evacuated.
  • several alarm devices are often to be activated, which then send out their, for example, acoustic alarm signals in overlapping time periods.
  • US 2005/0231349 A1 a system for evacuating people in a building is known, in which reporting units detect a dangerous situation and generate an alarm signal which is transmitted to a central station via a gateway. Voice modules are then controlled individually via the central station to deliver different voice messages. An operator can thus use the central station to guide people to be evacuated out of the respective dangerous situation with targeted voice messages. Further evacuation systems with controllable alarm devices are known from US 2009/0092263 A1 , WO 00/225 91 A1 , US 2006/021 480 9 A1 and US 2006/007 180 2 A1 .
  • the invention is based on the object of providing a method and a hazard alarm system of the type mentioned at the beginning, with control being carried out in such a way that a safe and orderly evacuation of a building is possible and in particular acoustic signal tones can be recognized or distinguished at any time are.
  • the invention achieves the object on the one hand by a method for controlling a hazard alarm system, which has a control device and a plurality of triggering devices connected to the control device, the triggering devices each being connected to at least one alarm device, comprising the steps: in an initialization step, the triggering devices Assigned identification data, a control signal for activating or deactivating the alarm devices is periodically sent to all triggering devices by the control device, identification data of one or more triggering devices being transmitted with the control signal, the identification data transmitted by the control device being compared by the triggering devices with the identification data assigned to them if the triggering devices determine that the identification data compared with one another match, they send ei n Control signal for activating or deactivating the alarm devices connected to them, so that the alarm devices to be activated or deactivated are activated or deactivated synchronously.
  • the invention achieves the object on the other hand by a hazard alarm system with a control device and a plurality of triggering devices connected to the control device via a control line, which in turn are each connected to at least one alarm device, the triggering devices each having a storage device in which the triggering devices are assigned Identification data are stored, the control device having a transmitting device via which a control signal for activating or deactivating the alarm devices can be sent to all triggering devices, with the control signal being used to identify identification data of one or more triggering devices can be transmitted, and wherein the triggering devices each have a comparison device which is designed to compare the identification data sent by the control device with the identification data stored in the storage device, and wherein the triggering devices are designed to match when the compared identification data to send a control signal for activation or deactivation to the alarm devices connected to them, so that the alarm devices to be activated or deactivated are activated or deactivated synchronously.
  • a control device is connected via at least one line, for example what is known as a primary fire alarm line, to a multiplicity of triggering devices, which in turn are each connected to at least one alarm device.
  • the triggering devices and alarm devices can also each form an integrated triggering and alarm device.
  • Identification data in particular communication addresses, are each assigned to the release devices. They can be reached by the control device via this.
  • the invention allows specific triggering devices and thus alarm devices to be controlled.
  • the control device sends a common command, in particular what is known as a broadcast command, to all triggering devices.
  • the common command is independent of the identification data and is received and processed by all triggering devices.
  • the control device With this common command, for example a command to activate the alarm devices, the control device also sends one or more sets of identification data. Only those tripping devices whose previously programmed identification data are sent with the common command then actually implement the common command. By selecting the identification data sent with the common command, the desired triggering and thus alarm devices can be specifically selected will. In this way, specific groups of triggering or alarm devices can be controlled in a targeted manner, for example all alarm devices of a specific building, a specific building wing or a building floor. In this way, the floors of a building can be evacuated one after the other in a manner suitable for an orderly evacuation, in that a corresponding evacuation signal is sent via the alarm devices arranged on the respective floor.
  • the triggering devices each have at least one control output, which is activated to trigger the respective alarm device if the identification data sent by the control device and the identification data stored in the triggering device match.
  • a control input of the alarm devices connected to the respective release devices is connected to the control output of the release devices.
  • the invention also ensures a synchronous, ie simultaneous activation or deactivation of the alarm devices selected in each case.
  • the triggering command for activating or deactivating the alarm devices is transmitted from the triggering devices selected by means of the respective identification data practically simultaneously to the alarm devices connected to these triggering devices.
  • the simultaneous or synchronous starting of the alarm devices, in particular acoustic alarm devices such as sirens has the advantage that the acoustic signal progression in the building can still be perceived at any time without a mixture of signal tones from all alarm devices occurring and the actual signal tone no longer being distinguishable.
  • the invention therefore ensures an orderly evacuation in the event of a fire at all times.
  • the control signal for activating or deactivating the alarm devices is periodically sent to all triggers by the control device facilities sent.
  • the triggering devices and possibly the alarm devices turn off automatically after a certain deactivation time, for example a few seconds.
  • the control device sends activation pulses to the triggering devices at sufficiently short intervals (less than the deactivation time) so that the alarm devices remain active.
  • the control signal for activating or deactivating the alarm devices can be sent from the control device to the triggering devices if at least one triggering device has previously sent a danger signal to the control device.
  • Signals, in particular commands and data can be exchanged bidirectionally via the connection between the control device and the release devices.
  • hazard alarm signals can also be sent from the triggering devices to the control device, for example if a dangerous condition such as a fire is detected by one or more triggering devices.
  • a dangerous condition such as a fire is detected by one or more triggering devices.
  • an alarm signal can be triggered in the entire building wing or floor in which the room is located. It is also possible for the control device to use the control signal for activating or deactivating the alarm devices to transmit the identification data of at least those triggering devices that previously sent a danger signal to the control device.
  • a communication address that uniquely identifies the release devices can be assigned to the release devices as identification data.
  • each release device an individual communication address is assigned so that all release devices can be controlled individually.
  • the release devices of different groups can be controlled individually, with the release devices of a group being able to be controlled (only) together.
  • the release devices can be divided into groups according to the floors of a building.
  • the release devices can be connected in series to a control line of the control device. So there is serial communication between the control device and the release devices. Furthermore, the triggering devices can also be supplied electrically via the control line.
  • the control line between the control device and the triggering devices for example a primary fire alarm line, can therefore have at least two wires, one used for communication between the control device and the triggering devices, in particular for transmitting the control signals, and the other for the electrical supply of the triggering devices and / or the Alarm devices.
  • the release devices can be danger detectors.
  • the hazard alarms can be fire alarms, for example smoke alarms.
  • the alarm devices can be optical and / or acoustic alarm devices.
  • the control device can be a fire alarm center.
  • the device according to the invention can be designed to carry out the method according to the invention.
  • the method according to the invention can accordingly be carried out with the device according to the invention.
  • the hazard alarm system has a control device 10, in the present example a fire alarm center 10.
  • the hazard alarm system also has a large number of triggering devices 12, in the present example hazard alarms 12, for example fire alarms.
  • the hazard alarms 12 are connected in series to the fire alarm center 10 via a control line 14, in the present case a so-called primary fire alarm line 14.
  • the primary fire alarm line 14 is used for a bidirectional exchange of signals between the central fire alarm system 10 and the hazard alarms 12.
  • the primary fire alarm line 14 also provides electrical power to the hazard alarms 12 16 is connected to an alarm device 18, in the example shown an acoustic alarm device 18, such as a siren.
  • the alarm devices 18 can additionally also comprise optical alarm devices, such as flashing lights.
  • the hazard alarms 12 are initially assigned identification data, in particular communication addresses, on the basis of which they can be identified by the fire alarm center 10.
  • the hazard detectors 12 with the alarm devices 18 assigned to them can be divided into several groups, the hazard detectors 12 of a group each being assigned the same communication address.
  • the hazard alarms 12 and alarm devices 18 can thus be divided into groups according to the floors of a building equipped with the hazard alarm system.
  • the hazard alarms 12 each have a memory device in which the communication addresses are stored.
  • a corresponding hazard signal can be sent via a transmitting and receiving device of the hazard alarm (s) to a transmitting and receiving device of the fire alarm center 10.
  • the hazard alarms 12 can be controlled by the fire alarm center 10 to activate the alarm devices 18 assigned to them.
  • a common command in particular a so-called broadcast command, to activate the alarm devices 18 is first sent to all hazard detectors 12 by the fire alarm center 10 via its transmitting and receiving device. This common command is received by all hazard alarms 12 via the transmitting and receiving devices.
  • the fire alarm center 10 initially transmits, for example, the identification data of a first group of hazard alarms 12.
  • the hazard alarms 12 each have a comparison device by means of which the identification data transmitted by the fire alarm center 10 are compared with the identification data stored in the memory device of the respective hazard alarm 12. If the comparison device determines a match, a control output of the corresponding hazard alarms 12 is activated and an activation signal is sent via the connecting lines 16 to a control input of the corresponding alarm devices 18. This in turn leads to the corresponding alarm devices 18 being triggered.
  • the hazard detectors 12 of a second and subsequently further groups can be activated in a corresponding manner, so that these hazard detectors 12 also successively activate their alarm devices 18.
  • the alarm devices 18 of the respective preceding group can be deactivated again, so that only the alarm devices 18 of one group are activated. In this way, for example, an office building with many floors can be evacuated successively in an orderly manner.
  • the activation of the hazard alarms 12 according to the invention leads to a practically simultaneous activation of the alarm devices 18 by the respective activated hazard alarms 12.
  • the respective alarm signal for example an acoustic evacuation signal
  • the respective alarm signal for example an acoustic evacuation signal
  • the alarm devices 18 deactivate themselves again automatically after a predetermined alarm duration of, for example, a few seconds.
  • a periodically recurring activation of the corresponding hazard detectors 12 and thus the alarm devices 18 can take place.
  • Each of these controls then represents a renewed activation pulse for the alarm devices 18, so that continuous alarming is ensured during the desired period.
  • the activation pulses must occur with a sufficient frequency to prevent the alarm devices (18) from switching off automatically.

Description

Die Erfindung betrifft ein Verfahren zur Steuerung einer Gefahrenmeldeanlage sowie eine Gefahrenmeldeanlage. Derartige Gefahrenmeldeanlagen weisen häufig eine Brandmeldezentrale auf, mit der eine Vielzahl von Gefahrenmeldern und Alarmeinrichtungen verbunden ist. Beispielsweise in großen Bürogebäuden können über die Brandmeldezentrale dann die einzelnen Gefahrenmelder überwacht werden. Sofern von einem oder mehreren Gefahrenmeldern ein Gefahrenzustand, beispielsweise ein Brand, detektiert wird, kann die Brandmeldezentrale einige oder sämtliche der Alarmeinrichtungen aktivieren, so dass beispielsweise eine Evakuierung des Gebäudes erfolgen kann. Um eine solche Evakuierung geordnet ablaufen zu lassen, sind häufig mehrere Alarmeinrichtungen anzusteuern, die dann in sich überschneidenden Zeiträumen ihr beispielsweise akustisches Alarmsignal, aussenden. Problematisch ist dabei, dass es bei sich einander überlagernden Signalverläufen und bei bestimmten Frequenzen der Signaltöne zu einem Gemisch von Signaltönen unterschiedlicher Alarmeinrichtungen kommen kann, so dass der ursprüngliche Signalton nicht mehr erkennbar bzw. unterscheidbar ist. Darüber hinaus ist es oftmals nicht wünschenswert, sämtliche Alarmeinrichtungen eines solchen umfangreichen Gebäudes gleichzeitig zu aktivieren, da dann keine geordnete Evakuierung mehr möglich ist.The invention relates to a method for controlling a hazard alarm system and to a hazard alarm system. Such hazard alarm systems often have a fire alarm center to which a large number of hazard alarms and alarm devices are connected. For example, in large office buildings, the individual hazard detectors can then be monitored via the fire alarm control panel. If a dangerous condition, for example a fire, is detected by one or more hazard alarms, the fire alarm center can activate some or all of the alarm devices so that, for example, the building can be evacuated. In order to allow such an evacuation to proceed in an orderly manner, several alarm devices are often to be activated, which then send out their, for example, acoustic alarm signals in overlapping time periods. The problem here is that with overlapping signal courses and at certain frequencies of the signal tones, a mixture of signal tones from different alarm devices can occur, so that the original signal tone can no longer be recognized or distinguished. In addition, it is often undesirable to activate all alarm devices in such a large building at the same time, since an orderly evacuation is then no longer possible.

Aus US 6 028 513 A sind ein Verfahren und eine Vorrichtung zur drahtlosen Aktivierung einer Mehrzahl von Alarmeinrichtungen bei Auslösen einer einzelnen Vorrichtung bekannt. Bei Empfang eines Alarmsignals auf Grundlage eines detektierten Alarmzustands wird von einer zentralen Steuereinheit ein Steuersignal an eine Mehrzahl von Alarmeinrichtungen übermittelt. Dabei soll eine Aktivperiode der Mehrzahl von Alarmeinrichtungen synchronisiert werden.Out U.S. 6 028 513 A a method and a device for wireless activation of a plurality of alarm devices when a single device is triggered are known. Upon receipt of an alarm signal based on a detected alarm state, a control signal is transmitted from a central control unit to a plurality of alarm devices. An active period of the plurality of alarm devices should be synchronized.

Aus US 2005/0231349 A1 ist ein System zur Evakuierung von in einem Gebäude befindlichen Personen bekannt, bei dem Meldeeinheiten eine Gefahrensituation detektieren und ein Alarmsignal erzeugen, welches über ein Gateway an eine Zentralstation übermittelt wird. Über die Zentralstation werden daraufhin Sprachmodule individuell zur Abgabe unterschiedlicher Sprachnachrichten angesteuert. Eine Bedienperson kann somit über die Zentralstation zu evakuierende Personen mit gezielten Sprachnachrichten aus der jeweiligen Gefahrensituation führen. Weitere Evakuierungssysteme mit ansteuerbaren Alarmeinrichtungen sind bekannt aus US 2009/0092263 A1 , WO 00/225 91 A1 , US 2006/021 480 9 A1 und US 2006/007 180 2 A1 .Out US 2005/0231349 A1 a system for evacuating people in a building is known, in which reporting units detect a dangerous situation and generate an alarm signal which is transmitted to a central station via a gateway. Voice modules are then controlled individually via the central station to deliver different voice messages. An operator can thus use the central station to guide people to be evacuated out of the respective dangerous situation with targeted voice messages. Further evacuation systems with controllable alarm devices are known from US 2009/0092263 A1 , WO 00/225 91 A1 , US 2006/021 480 9 A1 and US 2006/007 180 2 A1 .

Ausgehend von dem erläuterten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein Verfahren und eine Gefahrenmeldeanlage der eingangs genannten Art bereitzustellen, wobei eine Steuerung so erfolgt, dass eine sichere und geordnete Evakuierung eines Gebäudes möglich ist und insbesondere akustische Signaltöne jederzeit erkennbar bzw. unterscheidbar sind.Based on the explained prior art, the invention is based on the object of providing a method and a hazard alarm system of the type mentioned at the beginning, with control being carried out in such a way that a safe and orderly evacuation of a building is possible and in particular acoustic signal tones can be recognized or distinguished at any time are.

Die Erfindung löst diese Aufgabe durch die Gegenstände der Ansprüche 1 und 12. Vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen, der Beschreibung und den Figuren.The invention solves this problem with the subject matter of claims 1 and 12. Advantageous embodiments can be found in the dependent claims, the description and the figures.

Die Erfindung löst die Aufgabe zum einen durch ein Verfahren zur Steuerung einer Gefahrenmeldeanlage, die eine Steuereinrichtung und eine Mehrzahl von mit der Steuereinrichtung verbundenen Auslöseeinrichtungen aufweist, wobei die Auslöseeinrichtungen jeweils mit mindestens einer Alarmeinrichtung verbunden sind, umfassend die Schritte: in einem Initialisierungsschritt werden den Auslöseeinrichtungen Identifikationsdaten zugeordnet, von der Steuereinrichtung wird ein Steuersignal zum Aktivieren oder Deaktivieren der Alarmeinrichtungen periodisch an sämtliche Auslöseeinrichtungen gesandt, wobei mit dem Steuersignal Identifikationsdaten einer oder mehrerer Auslöseeinrichtungen übermittelt werden, die von der Steuereinrichtung übermittelten Identifikationsdaten werden von den Auslöseeinrichtungen mit den ihnen jeweils zugeordneten Identifikationsdaten verglichen, sofern die Auslöseeinrichtungen eine Übereinstimmung der miteinander verglichenen Identifikationsdaten feststellen, senden sie ein Steuersignal zum Aktivieren oder Deaktivieren der mit ihnen verbundenen Alarmeinrichtungen, so dass die zu aktivierenden oder zu deaktivierenden Alarmeinrichtungen synchron aktiviert oder deaktiviert werden.The invention achieves the object on the one hand by a method for controlling a hazard alarm system, which has a control device and a plurality of triggering devices connected to the control device, the triggering devices each being connected to at least one alarm device, comprising the steps: in an initialization step, the triggering devices Assigned identification data, a control signal for activating or deactivating the alarm devices is periodically sent to all triggering devices by the control device, identification data of one or more triggering devices being transmitted with the control signal, the identification data transmitted by the control device being compared by the triggering devices with the identification data assigned to them if the triggering devices determine that the identification data compared with one another match, they send ei n Control signal for activating or deactivating the alarm devices connected to them, so that the alarm devices to be activated or deactivated are activated or deactivated synchronously.

Die Erfindung löst die Aufgabe zum anderen durch eine Gefahrenmeldeanlage mit einer Steuereinrichtung und einer Mehrzahl von über eine Steuerleitung mit der Steuereinrichtung verbundenen Auslöseeinrichtungen, die wiederum jeweils mit mindestens einer Alarmeinrichtung verbunden sind, wobei die Auslöseeinrichtungen jeweils eine Speichereinrichtung aufweisen, in der den Auslöseeinrichtungen jeweils zugeordnete Identifikationsdaten gespeichert sind, wobei die Steuereinrichtung eine Sendeeinrichtung aufweist, über die ein Steuersignal zum Aktivieren oder Deaktivieren der Alarmeinrichtungen an sämtliche Auslöseeinrichtungen gesendet werden kann, wobei mit dem Steuersignal Identifikationsdaten einer oder mehrerer Auslöseeinrichtungen übermittelt werden können, und wobei die Auslöseeinrichtungen jeweils eine Vergleichseinrichtung aufweisen, die dazu ausgebildet ist, die von der Steuereinrichtung ausgesandten Identifikationsdaten mit den jeweils in der Speichereinrichtung hinterlegten Identifikationsdaten zu vergleichen, und wobei die Auslöseeinrichtungen dazu ausgebildet sind, bei einer Übereinstimmung der miteinander verglichenen Identifikationsdaten ein Steuersignal zum Aktivieren oder Deaktivieren an die mit ihnen verbundenen Alarmeinrichtungen zu senden, so dass die zu aktivierenden oder zu deaktivierenden Alarmeinrichtungen synchron aktiviert oder deaktiviert werden.The invention achieves the object on the other hand by a hazard alarm system with a control device and a plurality of triggering devices connected to the control device via a control line, which in turn are each connected to at least one alarm device, the triggering devices each having a storage device in which the triggering devices are assigned Identification data are stored, the control device having a transmitting device via which a control signal for activating or deactivating the alarm devices can be sent to all triggering devices, with the control signal being used to identify identification data of one or more triggering devices can be transmitted, and wherein the triggering devices each have a comparison device which is designed to compare the identification data sent by the control device with the identification data stored in the storage device, and wherein the triggering devices are designed to match when the compared identification data to send a control signal for activation or deactivation to the alarm devices connected to them, so that the alarm devices to be activated or deactivated are activated or deactivated synchronously.

Erfindungsgemäß ist eine Steuereinrichtung über mindestens eine Leitung, beispielsweise eine so genannte Brandmeldeprimärleitung, mit einer Vielzahl von Auslöseeinrichtungen verbunden, die wiederum jeweils mit mindestens einer Alarmeinrichtung verbunden sind. Die Auslöseeinrichtungen und Alarmeinrichtungen können dabei auch jeweils eine integrierte Auslöse- und Alarmeinrichtung bilden. Den Auslöseeinrichtungen sind jeweils Identifikationsdaten zugeordnet, insbesondere Kommunikationsadressen. Über diese sind sie von der Steuereinrichtung erreichbar. Die Erfindung erlaubt die gezielte Ansteuerung bestimmter Auslöseeinrichtungen und damit Alarmeinrichtungen. Dazu sendet die Steuereinrichtung einen gemeinsamen Befehl, insbesondere einen so genannten Broadcast-Befehl, an alle Auslöseeinrichtungen. Der gemeinsame Befehl ist unabhängig von den Identifikationsdaten und wird von allen Auslöseeinrichtungen empfangen und verarbeitet. Mit diesem gemeinsamen Befehl, z.B. einem Befehl zum Aktivieren der Alarmeinrichtungen, sendet die Steuereinrichtung auch einen oder mehrere Sätze von Identifikationsdaten. Nur diejenigen Auslöseeinrichtungen, deren zuvor programmierte Identifikationsdaten mit dem gemeinsamen Befehl gesendet werden, setzen den gemeinsamen Befehl dann tatsächlich um. Über die Auswahl der mit dem gemeinsamen Befehl gesendeten Identifikationsdaten können also die gewünschten Auslöse- und damit Alarmeinrichtungen gezielt ausgewählt werden. Auf diese Weise ist eine gezielte Ansteuerung bestimmter Gruppen von Auslöse- bzw. Alarmeinrichtungen möglich, beispielsweise sämtlicher Alarmeinrichtungen eines bestimmten Gebäudes, eines bestimmten Gebäudetrakts oder eines Gebäudestockwerks. Auf diese Weise können in für eine geordnete Evakuierung geeigneter Weise die Stockwerke eines Gebäudes nacheinander evakuiert werden, indem über die in dem jeweiligen Stockwerk angeordneten Alarmeinrichtungen ein entsprechendes Evakuierungssignal gesendet wird. Die Auslöseeinrichtungen besitzen hierzu jeweils mindestens einen Steuerausgang, der bei einer Übereinstimmung der von der Steuereinrichtung gesendeten und der in der Auslöseeinrichtung hinterlegten Identifikationsdaten zum Auslösen der jeweiligen Alarmeinrichtung aktiviert wird. Mit dem Steuerausgang der Auslöseeinrichtungen ist jeweils ein Steuereingang der mit den jeweiligen Auslöseeinrichtungen verbundenen Alarmeinrichtungen verbunden.According to the invention, a control device is connected via at least one line, for example what is known as a primary fire alarm line, to a multiplicity of triggering devices, which in turn are each connected to at least one alarm device. The triggering devices and alarm devices can also each form an integrated triggering and alarm device. Identification data, in particular communication addresses, are each assigned to the release devices. They can be reached by the control device via this. The invention allows specific triggering devices and thus alarm devices to be controlled. To this end, the control device sends a common command, in particular what is known as a broadcast command, to all triggering devices. The common command is independent of the identification data and is received and processed by all triggering devices. With this common command, for example a command to activate the alarm devices, the control device also sends one or more sets of identification data. Only those tripping devices whose previously programmed identification data are sent with the common command then actually implement the common command. By selecting the identification data sent with the common command, the desired triggering and thus alarm devices can be specifically selected will. In this way, specific groups of triggering or alarm devices can be controlled in a targeted manner, for example all alarm devices of a specific building, a specific building wing or a building floor. In this way, the floors of a building can be evacuated one after the other in a manner suitable for an orderly evacuation, in that a corresponding evacuation signal is sent via the alarm devices arranged on the respective floor. For this purpose, the triggering devices each have at least one control output, which is activated to trigger the respective alarm device if the identification data sent by the control device and the identification data stored in the triggering device match. A control input of the alarm devices connected to the respective release devices is connected to the control output of the release devices.

Die Erfindung gewährleistet darüber hinaus ein synchrones, also zeitgleiches Aktivieren oder Deaktivieren der jeweils ausgewählten Alarmeinrichtungen. So wird der Auslösebefehl zum Aktivieren oder Deaktivieren der Alarmeinrichtungen von den mittels der jeweiligen Identifikationsdaten ausgewählten Auslöseeinrichtungen praktisch zeitgleich an die mit diesen Auslöseeinrichtungen jeweils verbundenen Alarmeinrichtungen übersandt. Das zeitgleiche bzw. synchrone Starten der Alarmeinrichtungen, insbesondere akustischer Alarmeinrichtungen wie Sirenen, hat den Vorteil, dass der akustische Signalverlauf in dem Gebäude jederzeit noch wahrnehmbar ist, ohne dass sich ein Gemisch von Signaltönen sämtlicher Alarmeinrichtungen einstellt und der eigentliche Signalton nicht mehr unterscheidbar ist. Die Erfindung gewährleistet daher jederzeit eine geordnete Evakuierung im Brandfall.The invention also ensures a synchronous, ie simultaneous activation or deactivation of the alarm devices selected in each case. Thus, the triggering command for activating or deactivating the alarm devices is transmitted from the triggering devices selected by means of the respective identification data practically simultaneously to the alarm devices connected to these triggering devices. The simultaneous or synchronous starting of the alarm devices, in particular acoustic alarm devices such as sirens, has the advantage that the acoustic signal progression in the building can still be perceived at any time without a mixture of signal tones from all alarm devices occurring and the actual signal tone no longer being distinguishable. The invention therefore ensures an orderly evacuation in the event of a fire at all times.

Das Steuersignal zum Aktivieren oder Deaktivieren der Alarmeinrichtungen wird von der Steuereinrichtung periodisch an sämtliche Auslöse einrichtungen gesendet. Um eine (dauerhafte) Aktivierung der Auslöse- und damit Alarmeinrichtungen beispielsweise durch eine Störung zu vermeiden, kann vorgesehen sein, dass die Auslöseeinrichtungen und gegebenenfalls die Alarmeinrichtungen sich nach einer bestimmten Deaktivierungszeit, z.B. einigen Sekunden, automatisch abstellen. Solange ein Alarm gewünscht ist, werden bei dieser Ausgestaltung daher von der Steuereinrichtung in ausreichend kurzen Abständen (weniger als die Deaktivierungszeit) Aktivierungsimpulse an die Auslöseeinrichtungen gesendet, so dass die Alarmeinrichtungen aktiv bleiben.The control signal for activating or deactivating the alarm devices is periodically sent to all triggers by the control device facilities sent. In order to avoid a (permanent) activation of the triggering and thus alarm devices, for example due to a fault, it can be provided that the triggering devices and possibly the alarm devices turn off automatically after a certain deactivation time, for example a few seconds. As long as an alarm is desired, in this embodiment the control device sends activation pulses to the triggering devices at sufficiently short intervals (less than the deactivation time) so that the alarm devices remain active.

Nach einer Ausgestaltung kann das Steuersignal zum Aktivieren oder Deaktivieren der Alarmeinrichtungen von der Steuereinrichtung an die Auslöseeinrichtungen gesandt werden, sofern mindestens eine Auslöseeinrichtung zuvor ein Gefahrensignal an die Steuereinrichtung gesendet hat. Über die Verbindung zwischen Steuereinrichtung und Auslöseeinrichtungen können Signale, insbesondere Befehle und Daten, bidirektional ausgetauscht werden. Insbesondere können neben den von der Steuereinrichtung an die Auslöseeinrichtungen gesandten Steuersignalen auch beispielsweise Gefahrenmeldesignale von den Auslöseinrichtungen an die Steuereinrichtung gesandt werden, beispielsweise wenn von einer oder mehreren Auslöseeinrichtungen ein Gefahrenzustand, wie ein Brand, detektiert wird. Bei dieser Ausgestaltung kann bei einem in einem Raum eines Gebäudes erkannten Brand ein Alarmsignal in dem gesamten Gebäudetrakt oder Stockwerk, in dem sich der Raum befindet, ausgelöst werden. Es ist auch möglich, dass die Steuereinrichtung mit dem Steuersignal zum Aktivieren oder Deaktivieren der Alarmeinrichtungen die Identifikationsdaten zumindest derjenigen Auslöseeinrichtungen übermittelt, die zuvor ein Gefahrensignal an die Steuereinrichtung gesandt haben.According to one embodiment, the control signal for activating or deactivating the alarm devices can be sent from the control device to the triggering devices if at least one triggering device has previously sent a danger signal to the control device. Signals, in particular commands and data, can be exchanged bidirectionally via the connection between the control device and the release devices. In particular, in addition to the control signals sent by the control device to the triggering devices, for example, hazard alarm signals can also be sent from the triggering devices to the control device, for example if a dangerous condition such as a fire is detected by one or more triggering devices. In this embodiment, if a fire is detected in a room of a building, an alarm signal can be triggered in the entire building wing or floor in which the room is located. It is also possible for the control device to use the control signal for activating or deactivating the alarm devices to transmit the identification data of at least those triggering devices that previously sent a danger signal to the control device.

Nach einer weiteren Ausgestaltung kann den Auslöseeinrichtungen als Identifikationsdaten eine die Auslöseeinrichtungen jeweils eindeutig kennzeichnende Kommunikationsadresse zugeordnet werden. Bei dieser Ausgestaltung wird jeder Auslöseeinrichtung eine individuelle Kommunikationsadresse zugeordnet, so dass sämtliche Auslöseeinrichtungen individuell ansteuerbar sind. Alternativ ist es auch möglich, mehrere Gruppen von Auslöseeinrichtungen zu bilden, wobei den Auslöseeinrichtungen einer Gruppe als Identifikationsdaten eine gemeinsame Kommunikationsadresse zugeordnet wird. Bei dieser Ausgestaltung können die Auslöseeinrichtungen unterschiedlicher Gruppen individuell angesteuert werden, wobei die Auslöseeinrichtungen einer Gruppe jeweils (nur) gemeinsam angesteuert werden können. Beispielsweise können dabei die Auslöseeinrichtungen nach Stockwerken eines Gebäudes in Gruppen eingeteilt werden.According to a further embodiment, a communication address that uniquely identifies the release devices can be assigned to the release devices as identification data. In this configuration, each release device an individual communication address is assigned so that all release devices can be controlled individually. Alternatively, it is also possible to form several groups of triggering devices, the triggering devices of a group being assigned a common communication address as identification data. In this refinement, the release devices of different groups can be controlled individually, with the release devices of a group being able to be controlled (only) together. For example, the release devices can be divided into groups according to the floors of a building.

Die Auslöseeinrichtungen können seriell mit einer Steuerleitung der Steuereinrichtung verbunden sein. Es erfolgt also eine serielle Kommunikation zwischen Steuereinrichtung und Auslöseeinrichtungen. Weiterhin kann über die Steuerleitung auch eine elektrische Versorgung der Auslöseeinrichtungen erfolgen. Die Steuerleitung zwischen der Steuereinrichtung und den Auslöseeinrichtungen, beispielsweise eine Brandmeldeprimärleitung, kann also mindestens zwei Adern besitzen, wobei eine zur Kommunikation zwischen der Steuereinrichtung und den Auslöseeinrichtungen dient, insbesondere zum Übertragen der Steuersignale, und die andere zur elektrischen Versorgung der Auslöseeinrichtungen und/oder der Alarmeinrichtungen.The release devices can be connected in series to a control line of the control device. So there is serial communication between the control device and the release devices. Furthermore, the triggering devices can also be supplied electrically via the control line. The control line between the control device and the triggering devices, for example a primary fire alarm line, can therefore have at least two wires, one used for communication between the control device and the triggering devices, in particular for transmitting the control signals, and the other for the electrical supply of the triggering devices and / or the Alarm devices.

Die Auslöseeinrichtungen können Gefahrenmelder sein. Insbesondere können die Gefahrenmelder Brandmelder, beispielsweise Rauchmelder, sein. Die Alarmeinrichtungen können optische und/oder akustische Alarmeinrichtungen sein. Die Steuereinrichtung kann eine Brandmeldezentrale sein.The release devices can be danger detectors. In particular, the hazard alarms can be fire alarms, for example smoke alarms. The alarm devices can be optical and / or acoustic alarm devices. The control device can be a fire alarm center.

Die erfindungsgemäße Vorrichtung kann zur Durchführung des erfindungsgemäßen Verfahrens ausgebildet sein. Entsprechend kann das erfindungsgemäße Verfahren mit der erfindungsgemäßen Vorrichtung durchgeführt werden.The device according to the invention can be designed to carry out the method according to the invention. The method according to the invention can accordingly be carried out with the device according to the invention.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer Zeichnung näher erläutert. Die einzige Figur zeigt schematisch eine erfindungsgemäße Gefahrenmeldeanlage.An embodiment of the invention is explained in more detail below with reference to a drawing. The single figure shows schematically a hazard alarm system according to the invention.

Die erfindungsgemäße Gefahrenmeldeanlage weist eine Steuereinrichtung 10, in dem vorliegenden Beispiel eine Brandmeldezentrale 10, auf. Die Gefahrenmeldeanlage weist darüber hinaus eine Vielzahl von Auslöseeinrichtungen 12, in dem vorliegenden Beispiel Gefahrenmeldern 12, beispielsweise Brandmeldern, auf. Die Gefahrenmelder 12 sind über eine Steuerleitung 14, vorliegend eine so genannte Brandmeldeprimärleitung 14, seriell mit der Brandmeldezentrale 10 verbunden. Über die Brandmeldeprimärleitung 14 erfolgt zum einen ein bidirektionaler Austausch von Signalen zwischen der Brandmeldezentrale 10 und den Gefahrenmeldern 12. Darüber hinaus erfolgt über die Brandmeldeprimärleitung 14 auch eine elektrische Versorgung der Gefahrenmelder 12. Die Gefahrenmelder 12 sind in dem gezeigten Beispiel darüber hinaus jeweils über eine Verbindungsleitung 16 mit einer Alarmeinrichtung 18, in dem gezeigten Beispiel einer akustischen Alarmeinrichtung 18, wie einer Sirene, verbunden. Die Alarmeinrichtungen 18 können zusätzlich auch optische Alarmeinrichtungen, wie Blitzleuchten, umfassen.The hazard alarm system according to the invention has a control device 10, in the present example a fire alarm center 10. The hazard alarm system also has a large number of triggering devices 12, in the present example hazard alarms 12, for example fire alarms. The hazard alarms 12 are connected in series to the fire alarm center 10 via a control line 14, in the present case a so-called primary fire alarm line 14. The primary fire alarm line 14 is used for a bidirectional exchange of signals between the central fire alarm system 10 and the hazard alarms 12. In addition, the primary fire alarm line 14 also provides electrical power to the hazard alarms 12 16 is connected to an alarm device 18, in the example shown an acoustic alarm device 18, such as a siren. The alarm devices 18 can additionally also comprise optical alarm devices, such as flashing lights.

Im Betrieb werden den Gefahrenmeldern 12 in einem Initialisierungsschritt zunächst Identifikationsdaten, insbesondere Kommunikationsadressen, zugeordnet, anhand derer sie von der Brandmeldezentrale 10 identifiziert werden können. Beispielsweise können die Gefahrenmelder 12 mit den ihnen zugeordneten Alarmeinrichtungen 18 in mehrere Gruppen eingeteilt werden, wobei den Gefahrenmeldern 12 einer Gruppe jeweils die gleiche Kommunikationsadresse zugeordnet wird. So können die Gefahrenmelder 12 und Alarmeinrichtungen 18 nach Stockwerken eines mit der Gefahrenmeldeanlage ausgerüsteten Gebäudes in Gruppen eingeteilt werden. Die Gefahrenmelder 12 besitzen jeweils eine Speichereinrichtung, in der die Kommunikationsadressen gespeichert werden.During operation, in an initialization step, the hazard alarms 12 are initially assigned identification data, in particular communication addresses, on the basis of which they can be identified by the fire alarm center 10. For example, the hazard detectors 12 with the alarm devices 18 assigned to them can be divided into several groups, the hazard detectors 12 of a group each being assigned the same communication address. The hazard alarms 12 and alarm devices 18 can thus be divided into groups according to the floors of a building equipped with the hazard alarm system. The hazard alarms 12 each have a memory device in which the communication addresses are stored.

Wird im Betrieb beispielsweise von einem oder mehreren Gefahrenmeldern 12 ein Gefahrenzustand, wie ein Brand, detektiert, kann ein entsprechendes Gefahrensignal über eine Sende- und Empfangseinrichtung des oder der Gefahrenmelder(s) an eine Sende- und Empfangseinrichtung der Brandmeldezentrale 10 gesendet werden. Sofern in der Brandmeldezentrale 10 beispielsweise entschieden wird, dass das Gebäude zu evakuieren ist, können die Gefahrenmelder 12 durch die Brandmeldezentrale 10 zur Aktivierung der ihnen jeweils zugeordneten Alarmeinrichtungen 18 angesteuert werden. Hierzu wird von der Brandmeldezentrale 10 über ihre Sende- und Empfangseinrichtung zunächst ein gemeinsamer Befehl, insbesondere ein so genannter Broadcast-Befehl, zum Aktivieren der Alarmeinrichtungen 18 an sämtliche Gefahrenmelder 12 gesendet. Dieser gemeinsame Befehl wird über die Sende- und Empfangseinrichtungen von allen Gefahrenmeldern 12 empfangen. Mit dem gemeinsamen Befehl werden von der Brandmeldezentrale 10 zunächst beispielsweise die Identifikationsdaten einer ersten Gruppe von Gefahrendmeldern 12 übermittelt. Die Gefahrenmelder 12 besitzen jeweils eine Vergleichseinrichtung, mittels derer die von der Brandmeldezentrale 10 übermittelten Identifikationsdaten mit den in der Speichereinrichtung des jeweiligen Gefahrenmelders 12 gespeicherten Identifikationsdaten verglichen werden. Stellt die Vergleichseinrichtung dabei eine Übereinstimmung fest, wird ein Steuerausgang der entsprechenden Gefahrenmelder 12 aktiviert und ein Aktivierungssignal über die Verbindungsleitungen 16 an einen Steuereingang der entsprechenden Alarmeinrichtungen 18 gesendet. Dies wiederum führt zu einem Auslösen der entsprechenden Alarmeinrichtungen 18.If, for example, a hazardous condition such as a fire is detected by one or more hazard alarms 12 during operation, a corresponding hazard signal can be sent via a transmitting and receiving device of the hazard alarm (s) to a transmitting and receiving device of the fire alarm center 10. If, for example, it is decided in the fire alarm center 10 that the building is to be evacuated, the hazard alarms 12 can be controlled by the fire alarm center 10 to activate the alarm devices 18 assigned to them. For this purpose, a common command, in particular a so-called broadcast command, to activate the alarm devices 18 is first sent to all hazard detectors 12 by the fire alarm center 10 via its transmitting and receiving device. This common command is received by all hazard alarms 12 via the transmitting and receiving devices. With the common command, the fire alarm center 10 initially transmits, for example, the identification data of a first group of hazard alarms 12. The hazard alarms 12 each have a comparison device by means of which the identification data transmitted by the fire alarm center 10 are compared with the identification data stored in the memory device of the respective hazard alarm 12. If the comparison device determines a match, a control output of the corresponding hazard alarms 12 is activated and an activation signal is sent via the connecting lines 16 to a control input of the corresponding alarm devices 18. This in turn leads to the corresponding alarm devices 18 being triggered.

Nach einer bestimmten Alarmzeit der Alarmeinrichtungen 18 dieser ersten Gruppe von Gefahrenmeldern 12 können in entsprechender Weise die Gefahrenmelder 12 einer zweiten und nachfolgend weiterer Gruppen angesteuert werden, so dass auch diese Gefahrenmelder 12 sukzessive ihre Alarmeinrichtungen 18 aktivieren. In gleicher Weise wie oben zur Aktivierung beschrieben, können dabei die Alarmeinrichtungen 18 der jeweils vorangegangenen Gruppe wieder deaktiviert werden, so dass immer nur die Alarmeinrichtungen 18 einer Gruppe aktiviert sind. Auf diese Weise kann beispielsweise ein Bürogebäude mit vielen Stockwerken sukzessive in geordneter Weise evakuiert werden.After a certain alarm time of the alarm devices 18 of this first group of hazard detectors 12, the hazard detectors 12 of a second and subsequently further groups can be activated in a corresponding manner, so that these hazard detectors 12 also successively activate their alarm devices 18. In In the same way as described above for activation, the alarm devices 18 of the respective preceding group can be deactivated again, so that only the alarm devices 18 of one group are activated. In this way, for example, an office building with many floors can be evacuated successively in an orderly manner.

Darüber hinaus führt die erfindungsgemäße Ansteuerung der Gefahrenmelder 12 zu einer praktisch zeitgleichen Aktivierung der Alarmeinrichtungen 18 durch die jeweils angesteuerten Gefahrenmelder 12. Bei den aktivierten akustischen Alarmeinrichtungen 18 wird auf diese Weise sichergestellt, dass das jeweilige Alarmsignal, beispielsweise ein akustisches Evakuierungssignal, jederzeit noch deutlich erkennbar ist. Insbesondere werden Überlagerungen akustischer Signale unterschiedlicher Alarmeinrichtungen, die dazu führen können, dass das akustische Signal nicht mehr eindeutig erkennbar ist, sicher vermieden.In addition, the activation of the hazard alarms 12 according to the invention leads to a practically simultaneous activation of the alarm devices 18 by the respective activated hazard alarms 12. With the activated acoustic alarm devices 18, this ensures that the respective alarm signal, for example an acoustic evacuation signal, is still clearly recognizable at all times is. In particular, superimpositions of acoustic signals from different alarm devices, which can lead to the acoustic signal no longer being clearly recognizable, are reliably avoided.

Es kann darüber hinaus vorgesehen sein, dass sich die Alarmeinrichtungen 18 jeweils nach einer vorgegebenen Alarmdauer von beispielsweise einigen Sekunden, selbsttätig wieder deaktivieren. In einem solchen Fall kann während der gewünschten Alarmdauer der Alarmeinrichtungen 18 einer Gruppe eine periodisch wiederkehrende Ansteuerung der entsprechenden Gefahrenmelder 12 und damit der Alarmeinrichtungen 18 erfolgen. Jede dieser Ansteuerungen stellt dann einen erneuten Aktivierungsimpuls für die Alarmeinrichtungen 18 dar, so dass eine durchgehende Alarmgebung während des gewünschten Zeitraums sichergestellt ist. Die Aktivierungsimpulse müssen mit einer ausreichenden Frequenz erfolgen, um ein selbsttätiges Abschalten der Alarmeinrichtungen (18) zu verhindern.It can also be provided that the alarm devices 18 deactivate themselves again automatically after a predetermined alarm duration of, for example, a few seconds. In such a case, during the desired alarm duration of the alarm devices 18 of a group, a periodically recurring activation of the corresponding hazard detectors 12 and thus the alarm devices 18 can take place. Each of these controls then represents a renewed activation pulse for the alarm devices 18, so that continuous alarming is ensured during the desired period. The activation pulses must occur with a sufficient frequency to prevent the alarm devices (18) from switching off automatically.

Claims (21)

  1. A method for controlling a hazard warning device, which comprises a control apparatus (10) and a plurality of trigger apparatuses (12) connected to the control apparatus (10), the trigger apparatuses (12) each being connected to at least one alarm apparatus (18), characterized by the steps of:
    - identification data are assigned to the trigger apparatuses (12) in an initialization step,
    - a control signal for activating or deactivating the alarm apparatuses (18) are periodically sent by the control apparatus (10) to all trigger apparatuses (12), identification data of one or more trigger apparatuses (12) being transmitted with the control signal,
    - the trigger apparatuses (12) compare the identification data transmitted by the control apparatus (10) with the identification data assigned to each of said trigger apparatuses,
    - if the trigger apparatuses (12) detect matching of the compared identification data, they send a control signal for activating or deactivating the alarm apparatuses (18) connected to said trigger apparatuses, such that the alarm apparatuses (18) to be activated or deactivated are activated or deactivated synchronously.
  2. The method according to claim 1, characterized in that the control signal for activating or deactivating the alarm apparatuses (18) is sent by the control apparatus (10) to the trigger apparatuses (12) if at least one trigger apparatus (12) previously sent a hazard signal to the control apparatus (10).
  3. The method according to any one of the preceding claims, characterized in that the control apparatus (10) transmits, with the control signal for activating or deactivating the alarm apparatuses (18), the identification data at least of the trigger apparatuses (12) that previously sent a hazard signal to the control apparatus (10).
  4. The method according to any one of the preceding claims, characterized in that a communication address that uniquely identifies the trigger apparatuses (12) in each case is assigned to the trigger apparatuses (12) as identification data.
  5. The method according to any one of claims 1 to 3, characterized in that a plurality of groups of trigger apparatuses (12) are formed, a common communication address being assigned to the trigger apparatuses (12) of a group as identification data in each case.
  6. The method according to any one of the preceding claims, characterized in that the trigger apparatuses (12) are connected in series to a control line (14) of the control apparatus (10).
  7. The method according to any one of the preceding claims, characterized in that electricity is also supplied to the trigger apparatuses (12) via the control line (14).
  8. The method according to any one of the preceding claims, characterized in that the trigger apparatuses (12) are hazard detectors (12).
  9. The method according to claim 8, characterized in that the hazard detectors (12) are fire detectors, in particular smoke detectors.
  10. The method according to any one of the preceding claims, characterized in that the alarm apparatuses (18) are optical and/or acoustic alarm apparatuses (18).
  11. The method according to any one of the preceding claims, characterized in that the control apparatus (10) is a central fire detection unit (10).
  12. A hazard warning device comprising a control apparatus (10) and a plurality of trigger apparatuses (12), which are connected to the control apparatus (10) via a control line (14) and which are in turn each connected to at least one alarm apparatus (18), wherein the trigger apparatuses (12) each comprise a memory apparatus in which the identification data assigned to each of the trigger apparatuses (12) are stored, wherein the control apparatus (10) comprises a transmission apparatus via which a control signal for activating or deactivating the alarm apparatuses (18) is periodically sent to all trigger apparatuses (12), wherein identification data of one or more trigger apparatuses are transmitted with the control signal, and wherein the trigger apparatuses (12) each comprise a comparison apparatus, which is designed to compare the identification data sent out by the control apparatus (10) with the identification data in each case stored in the memory apparatus, and wherein the trigger apparatuses (12) are designed to send a control signal for activation or deactivation to the alarm apparatuses (18) connected to said trigger apparatuses if the compared identification data match, such that the alarm apparatuses (18) to be activated or deactivated are activated or deactivated synchronously.
  13. The hazard warning device according to claim 12, characterized in that the control apparatus (10) comprises a receiving apparatus, which is designed to receive a hazard signal sent out by the trigger apparatuses (12).
  14. The hazard warning device according to any one of claims 12 or 13, characterized in that a communication address that uniquely identifies the alarm apparatuses (12) in each case is assigned to the trigger apparatuses (12) as identification data.
  15. The hazard warning device according to any one of claims 12 or 13, characterized in that a plurality of groups of trigger apparatuses (12) are formed, a common communication address being assigned to the trigger apparatuses (12) of a group as identification data in each case.
  16. The hazard warning device according to any one of claims 12 to 15, characterized in that the trigger apparatuses (12) are connected in series to the control line (14).
  17. The hazard warning device according to any one of claims 12 to 16, characterized in that electricity is also supplied to the trigger apparatuses (12) via the control line (14).
  18. The hazard warning device according to any one of claims 12 to 17, characterized in that the trigger apparatuses (12) are hazard detectors (12).
  19. The hazard warning device according to claim 18, characterized in that the hazard detectors (12) are fire detectors, in particular smoke detectors.
  20. The hazard warning device according to any one of claims 12 to 19, characterized in that the alarm apparatuses (18) are optical and/or acoustic alarm apparatuses (18).
  21. The hazard warning device according to any one of claims 12 to 20, characterized in that the control apparatus (10) is a central fire detection unit (10).
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US20130234848A1 (en) 2013-09-12
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EP2631885A2 (en) 2013-08-28

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