EP0404976A1 - Method for data transmission in an alarm signalling device - Google Patents

Method for data transmission in an alarm signalling device Download PDF

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Publication number
EP0404976A1
EP0404976A1 EP89111766A EP89111766A EP0404976A1 EP 0404976 A1 EP0404976 A1 EP 0404976A1 EP 89111766 A EP89111766 A EP 89111766A EP 89111766 A EP89111766 A EP 89111766A EP 0404976 A1 EP0404976 A1 EP 0404976A1
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EP
European Patent Office
Prior art keywords
alarm
signalling
hazard
inactive
detectors
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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EP89111766A
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German (de)
French (fr)
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EP0404976B1 (en
Inventor
Peer Dr.-Ing. Thilo
Klaus Kaiser
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Siemens AG
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Siemens AG
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Priority to AT89111766T priority Critical patent/ATE101740T1/en
Priority to EP89111766A priority patent/EP0404976B1/en
Priority to ES89111766T priority patent/ES2048792T3/en
Priority to DE89111766T priority patent/DE58907006D1/en
Publication of EP0404976A1 publication Critical patent/EP0404976A1/en
Application granted granted Critical
Publication of EP0404976B1 publication Critical patent/EP0404976B1/en
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade

Definitions

  • the invention relates to a method for data transmission in a hazard detection system, which has a control center with several detection lines and for each detection line a plurality of hazard detectors that can be connected in a chain with different notification rates, the hazard detectors being queried cyclically from the control center for their detection signals and with a control signal are controllable.
  • hazard detectors must transmit binary messages, multiple messages or analog values to a control center in a hazard detection system.
  • the message rates and thus the requirements for the transmission speed are different, e.g. a break-in must be reported faster than the start of contamination of a smoke detector.
  • a reporting line i.e. a primary reporting line
  • several hazard detectors arranged that are addressed individually, in groups or collectively depending on the requirements.
  • data transmission a high level of data security is required for addressing.
  • primary reporting lines should consist of as few wires as possible, usually two wires, for reasons of cost and reliability, and also take over the energy supply for the individual hazard detectors.
  • a method and a device for the transmission of measured values in a fire detection system is known.
  • the individual detectors of a detection line are connected to the control center in a chain, the analog measured value of the detector being transmitted and the address of the respective detector being ascertained.
  • different types of detectors can also be connected.
  • Control signals can also be transmitted to the individual detectors in the known notification system, as described in DE-OS 25 33 354.
  • the time until the relevant detector switches through to the next detector corresponds to the analog measured value of this relevant detector. This means a certain period of time for each polling cycle of a zone. Since different transmission speeds are required for different types of detectors in an integrated danger detection system, the purpose of the invention is to accelerate the detection of the detectors.
  • the object of the invention is therefore to provide a transmission method for a hazard alarm system which is designed for the common transmission of all hazard messages, for example fire and intrusion messages.
  • a known transmission method as described in DE-OS 25 33 382 and DE-OS 25 33 354 for the transmission of control commands, should be developed in such a way that the transmission time per zone is reduced without reducing the number of hazard detectors .
  • a respective hazard detector is switched to an inactive state with a low message rate for a predefinable period of time.
  • the detectors in question do not emit an alarm signal with every query, or in other words, they do not emit an alarm signal for this period.
  • the detectors concerned switch through to the next hazard detector at least accelerated.
  • each transmission device of the hazard detectors has a memory which is supplied by the control center when the hazard alarm system is started up or by means of the control signal in such a way that the detector in question does not send a message every time it is queried, but more rarely issues, ie does not issue a message for a predefinable time.
  • the time period is determined either by an internal timer or by an internal counter for the queries.
  • the necessary switch-on time of such transmission devices of the danger detectors is considerably reduced in this operating mode, and the time required for querying the entire detection line or primary reporting line is also shortened accordingly.
  • This has the advantage that the primary reporting line can often be queried with the remaining active hazard detector, so that its messages are transmitted to the control center faster and / or more frequently.
  • the inactivated hazard detectors can be reactivated with a further control signal from the control center, so that the time period is determined from the control center.
  • the transmission devices of the danger detectors it is advantageous to design the transmission devices of the danger detectors in such a way that they remain switched through in the inactive state and thus advantageously do not require any transmission time at all.
  • the control center then only sees and processes a reduced number of hazard detectors, which leads to a further increase in the query speed for the active hazard detectors of a primary reporting line.
  • the control signal can be formed either by a specific voltage pulse or else by a specific value of the line voltage, which differs from the usual line voltage values.
  • the correct address assignment is ensured in that the initialization tion, i.e. when the hazard alarm system is started up, the total number of hazard alarms is counted in the control center, as is usual with chain synchronization, and the further call is only released if this number is correctly determined, that is, if it is with that matches the previously determined and / or supplied number.
  • the inactive mode a dependency on the detector location or on the type of detector can be taken as a basis and the inactive mode can be carried out manually or automatically.
  • each individual transmission device or the corresponding hazard detector is called up different times as required or receives control signals of different lengths, and issues hazard messages of different lengths.
  • the available transmission capacity can be used optimally, so that an inexpensive, universally usable transmission system for hazard reports is created.
  • operation with the known, uniform chain synchronization is still possible and foreseeable with appropriate control.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The alarm signalling centre has several signalling lines and for each signalling line a multiplicity of alarm signalling devices, which can be connected in the form of a chain and have different signalling priorities or signalling rates. The alarm signalling devices are cyclically interrogated by the centre for their information signals and can be selected by means of a control signal. Alarm signalling devices having a low signalling rate are switched to an inactive state for a predeterminable period of time when the alarm signalling system is taken into operation or by means of the control signal, in which state these signalling devices do not output any information signal during the interrogation for this time and switch through to the next alarm signalling device, at least in an accelerated manner. The alarm signalling devices having a low signalling rate can be switched to be inactive at particular times. The duration can be determined by a signalling device-internal timer or by a signalling device-internal counter for the interrogations.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Datenübertra­gung in einer Gefahrenmeldeanlage, die eine Zentrale mit mehre­ren Meldelinien und pro Meldelinie eine Vielzahl von kettenför­mig anschaltbaren Gefahrenmeldern mit unterschiedlichen Meldungs­raten aufweist, wobei die Gefahrenmelder von der Zentrale aus zyklisch auf ihre Meldesignale abgefragt werden und mit einem Steuersignal ansteuerbar sind.The invention relates to a method for data transmission in a hazard detection system, which has a control center with several detection lines and for each detection line a plurality of hazard detectors that can be connected in a chain with different notification rates, the hazard detectors being queried cyclically from the control center for their detection signals and with a control signal are controllable.

Gefahrenmelder müssen, je nach Aufgabe, binäre Meldungen, Mehr­fachmeldungen oder Analogwerte zu einer Zentrale einer Gefahren­meldeanlage übertragen. Dabei sind die Meldungsraten und damit auch die Anforderungen an die Übertragungsgeschwindigkeit unterschiedlich, z.B. muß ein Einbruch schneller gemeldet werden als die beginnende Verschmutzung eines Rauchmelders. Üblicher­weise und insbesondere auch aus Kostengründen, sind auf einer Meldeleitung, d.h. einer Meldeprimärleitung, mehrere Gefahren­melder angeordnet, die in Abhängigkeit von den Erfordernissen einzeln, in Gruppen oder kollektiv adressiert werden. Wie für die Datenübertragung ist auch für die Adressierung eine hohe Datensicherheit erforderlich. Zudem sollen solche Meldeprimär­leitungen aus Kosten- und Zuverlässigkeitsgründen aus möglichst wenig Adern, in der Regel aus zwei Adern, bestehen und dabei auch die Energieversorgung der einzelnen Gefahrenmelder mit übernehmen.Depending on the task, hazard detectors must transmit binary messages, multiple messages or analog values to a control center in a hazard detection system. The message rates and thus the requirements for the transmission speed are different, e.g. a break-in must be reported faster than the start of contamination of a smoke detector. Usually and in particular also for reasons of cost, are on a reporting line, i.e. a primary reporting line, several hazard detectors arranged that are addressed individually, in groups or collectively depending on the requirements. As for data transmission, a high level of data security is required for addressing. In addition, such primary reporting lines should consist of as few wires as possible, usually two wires, for reasons of cost and reliability, and also take over the energy supply for the individual hazard detectors.

Entsprechend den Erfordernissen werden unterschiedliche Ubertra­gungssysteme verwendet, um beispielsweise Intrusions-, Brand- oder Störungsmeldungen von den einzelnen Gefahrenmeldern zur Zentrale zu übertragen. Üblicherweise wurden hierfür mehrere Systeme parallel betrieben, die eine unterschiedliche Anzahl von Adern benötigten und eine unterschiedliche Adressierungstiefe besaßen. Das hat zur Folge, daß trotz bewährter und relativ preiswerter Einzelsysteme aufwendige Gesamtanordnungen ent­standen, die darüber hinaus im allgemeinen nur die jeweiligen Minimalanforderungen erfüllten. Es wurden bereits auch integrierte Gefahrenmeldesysteme vorgeschlagen, die allerdings sehr aufwendig sind (z.B. DE-OS 23 10 127).Depending on the requirements, different transmission systems are used, for example to transmit intrusion, fire or malfunction reports from the individual hazard detectors to the control center. Usually there were several Systems operated in parallel that required a different number of wires and had a different depth of address. The result of this is that, despite proven and relatively inexpensive individual systems, complex overall arrangements have been created which, moreover, generally only meet the respective minimum requirements. Integrated hazard detection systems have also been proposed, but these are very complex (for example DE-OS 23 10 127).

Aus der DE-OS 25 33 382 ist ein Verfahren und eine Einrichtung zur Übertragung von Meßwerten in einem Brandmeldesystem bekannt. Bei dem bekannten Verfahren werden die einzelnen Melder einer Meldelinie kettenförmig an die Zentrale angeschaltet, wobei der analoge Meßwert des Melders übertragen und die Adresse des je­weiligen Melders festgestellt wird. Bei einem derartigen Melde­system können auch verschiedenartige Melder angeschlossen wer­den. Ebenso können bei dem bekannten Meldesystem Steuersignale zu den einzelnen Meldern übertragen werden, wie dies in der DE-OS 25 33 354 beschrieben ist. Bei dem bekannten System ent­spricht die Zeit, bis der betreffende Melder zum nächsten Melder durchschaltet, dem analogen Meßwert dieses betreffenden Melders. Das bedeutet eine bestimmte Zeitdauer für einen jeweiligen Ab­fragezyklus einer Meldelinie. Da bei einem integrierten Gefahren­meldesystem für verschiedene Melderarten unterschiedliche Über­tragungsgeschwindigkeiten erforderlich sind, ist es Zweck der Erfindung, die Melderabfrage zu beschleunigen.From DE-OS 25 33 382 a method and a device for the transmission of measured values in a fire detection system is known. In the known method, the individual detectors of a detection line are connected to the control center in a chain, the analog measured value of the detector being transmitted and the address of the respective detector being ascertained. With such a notification system, different types of detectors can also be connected. Control signals can also be transmitted to the individual detectors in the known notification system, as described in DE-OS 25 33 354. In the known system, the time until the relevant detector switches through to the next detector corresponds to the analog measured value of this relevant detector. This means a certain period of time for each polling cycle of a zone. Since different transmission speeds are required for different types of detectors in an integrated danger detection system, the purpose of the invention is to accelerate the detection of the detectors.

Aufgabe der Erfindung ist es daher, ein Übertragungsverfahren für eine Gefahrenmeldeanlage anzugeben, die für die gemeinsame Übertragung aller Gefahrenmeldungen, beispielsweise Brand- und Einbruchmeldungen, ausgelegt ist. Dazu soll ein bekanntes Übertragungsverfahren, wie es in der DE-OS 25 33 382 und in der DE-OS 25 33 354 für die Übertragung von Steuerbefehlen be­schrieben ist, derart weitergebildet werden, daß die Über­tragungszeit pro Meldelinie ohne Reduzierung der Anzahl der Gefahrenmelder verkürzt wird.The object of the invention is therefore to provide a transmission method for a hazard alarm system which is designed for the common transmission of all hazard messages, for example fire and intrusion messages. For this purpose, a known transmission method, as described in DE-OS 25 33 382 and DE-OS 25 33 354 for the transmission of control commands, should be developed in such a way that the transmission time per zone is reduced without reducing the number of hazard detectors .

Diese Aufgabe wird bei einem eingangs beschriebenen Verfahren zur Datenübertragung in einer Gefahrenmeldeanlage mit den kenn­zeichnenden Merkmalen des Anspruchs 1 gelöst.This object is achieved in a method for data transmission described in the introduction in a hazard alarm system with the characterizing features of claim 1.

Bei dem erfindungsgemäßen Übertragungsverfahren wird bei der Inbetriebnahme der Gefahrenmeldeanlage oder mit dem Steuersignal ein jeweiliger Gefahrenmelder mit einer niederen Meldungsrate für eine vorgebbare Zeitdauer in einen inaktiven Zustand geschal­tet. Daraufhin geben die betreffenden Melder nicht bei jeder Abfrage ein Meldesignal ab, oder anders ausgedrückt, sie geben für diese Zeitdauer kein Meldesignal ab. Dabei schalten die betreffenden Melder zumindest beschleunigt zum nächsten Gefahren­melder durch.In the transmission method according to the invention, when the hazard alarm system is started up or with the control signal, a respective hazard detector is switched to an inactive state with a low message rate for a predefinable period of time. Thereupon, the detectors in question do not emit an alarm signal with every query, or in other words, they do not emit an alarm signal for this period. The detectors concerned switch through to the next hazard detector at least accelerated.

Das erfindungsgemäße Übertragungsverfahren ist in vorteilhafter Weise für die gemeinsame Übertragung aller Gefahrenmeldungen ausgelegt. Dazu gestattet es, Meldungen unterschiedlicher Größe (binär bis analog) mit unterschiedlicher Geschwindigkeit über eine Doppelleitung zu übertragen. Besonders vorteilhaft ist, daß alle peripheren Ubertragungseinrichtungen gleich sind und keine individuelle Einstellung vor Ort weder für die Adresse noch für die Übertragungsrate benötigt wird. Mit diesem Übertragungsverfahren entsteht ein kostengünstiges Gesamtsystem mit in der Regel weit über den Minimalanforderungen liegenden Leistungseigenschaften, das darüber hinaus Vorteile bei Planung, Errichtung und Wartung bietet. Eventuell notwendige oder er­wünschte Einstellungen, wie z.B. die Bildung von Adressengruppen oder die Wahl einzelner, besonders schnell zu übertragender Mel­dungen, können in vorteilhafter Weise in der Zentrale vorge­nommen werden. Es sind dazu lediglich gleiche Bausteine er­forderlich, die nach Art der Kettensynchronisation, wie sie aus der Pulsmeldetechnik bekannt ist, verbunden sind. Um die einzelnen Gefahrenmelder in einen inaktiven Zustand zu schalten, besitzt jede Übertragungseinrichtung der Gefahrenmelder einen Speicher, der von der Zentrale bei der Inbetriebnahme der Gefahrenmeldeanlage oder mittels des Steuersignals derart versorgt wird, daß der betreffende Melder nicht bei jeder Abfrage, sondern seltener, eine Meldung absetzt, d.h. für eine vorgebbare Zeit keine Meldung absetzt.The transmission method according to the invention is advantageously designed for the joint transmission of all hazard reports. It also allows messages of different sizes (binary to analog) to be transmitted at different speeds over a double line. It is particularly advantageous that all peripheral transmission devices are the same and that no individual setting on site is required either for the address or for the transmission rate. This transmission method creates a cost-effective overall system with performance properties that are generally well above the minimum requirements, which also offers advantages in terms of planning, construction and maintenance. Any necessary or desired settings, such as the formation of address groups or the selection of individual messages that can be transmitted particularly quickly, can advantageously be carried out in the central office. All that is required is the same modules that are connected in the manner of chain synchronization, as is known from pulse signaling technology. In order to switch the individual hazard detectors to an inactive state, each transmission device of the hazard detectors has a memory which is supplied by the control center when the hazard alarm system is started up or by means of the control signal in such a way that the detector in question does not send a message every time it is queried, but more rarely issues, ie does not issue a message for a predefinable time.

In vorteilhafter Weise wird dabei die Zeitdauer entweder von einem melderinternen Zeitgeber oder von einem melderinternen Zähler für die Abfragen bestimmt. Auf diese Weise wird die not­wendige Anschaltzeit solcher Übertragungseinrichtungen der Gefah­renmelder bei dieser Betriebsweise erheblich reduziert und so die für die Abfrage der gesamten Meldelinie bzw. Meldeprimär­leitung notwendige Zeit ebenfalls entsprechend verkürzt. Das hat den Vorteil, daß die Meldeprimärleitung mit dem verbleiben­den aktiven Gefahrenmelder öfters abgefragt werden kann, so daß deren Meldungen schneller und/oder häufiger zur Zentrale übertragen werden.Advantageously, the time period is determined either by an internal timer or by an internal counter for the queries. In this way, the necessary switch-on time of such transmission devices of the danger detectors is considerably reduced in this operating mode, and the time required for querying the entire detection line or primary reporting line is also shortened accordingly. This has the advantage that the primary reporting line can often be queried with the remaining active hazard detector, so that its messages are transmitted to the control center faster and / or more frequently.

In einer weiteren Ausgestaltung des erfindungsgemäßen Verfahrens können die inaktiv geschalteten Gefahrenmelder mit einem weite­ren Steuersignal von der Zentrale aus wieder aktiviert werden, so daß die Zeitdauer von der Zentrale aus bestimmt wird.In a further embodiment of the method according to the invention, the inactivated hazard detectors can be reactivated with a further control signal from the control center, so that the time period is determined from the control center.

Für das erfindungsgemäße Ubertragungsverfahren ist es vorteil­haft, die Übertragungseinrichtungen der Gefahrenmelder derart auszuführen, daß sie im inaktiven Zustand durchgeschaltet blei­ben und somit in vorteilhafter Weise überhaupt keine Übertra­gungszeit benötigen. Die Zentrale sieht und bearbeitet dann also nur eine reduzierte Zahl von Gefahrenmeldern, was zu einer wei­teren Erhöhung der Abfragegeschwindigkeit für die aktiven Ge­fahrenmelder einer Meldeprimärleitung führt.For the transmission method according to the invention, it is advantageous to design the transmission devices of the danger detectors in such a way that they remain switched through in the inactive state and thus advantageously do not require any transmission time at all. The control center then only sees and processes a reduced number of hazard detectors, which leads to a further increase in the query speed for the active hazard detectors of a primary reporting line.

Für die Übertragung des Steuerbefehls bzw. der Steuerbefehle kann das Steuersignal entweder von einem bestimmten Spannungs­impuls oder aber auch von einem bestimmten Wert der Linien­spannung, der sich von den üblichen Linienspannungswerten unter­scheidet, gebildet sein.For the transmission of the control command or the control commands, the control signal can be formed either by a specific voltage pulse or else by a specific value of the line voltage, which differs from the usual line voltage values.

Bei dem erfindungsgemäßen Ubertragungsverfahren wird die richtige Adressenzuordnung dadurch gewährleistet, daß bei der Initialisie­ rung, d.h. bei der Inbetriebnahme der Gefahrenmeldeanlage, in der Zentrale die Gesamtzahl der Gefahrenmelder, wie es bei der Kettensynchronisation üblich ist, gezählt wird, und der weitere Aufruf nur dann freigegeben wird, wenn diese Zahl richtig ermittelt ist, das bedeutet, wenn sie mit ,der früher bestimmten und/oder versorgten Zahl übereinstimmt. Bei der Inaktivschaltung kann eine Abhängigkeit von dem Melderort oder von der Melderart zugrundegelegt werden und die Inaktivschaltung manuell oder automatisch erfolgen.In the transmission method according to the invention, the correct address assignment is ensured in that the initialization tion, i.e. when the hazard alarm system is started up, the total number of hazard alarms is counted in the control center, as is usual with chain synchronization, and the further call is only released if this number is correctly determined, that is, if it is with that matches the previously determined and / or supplied number. In the inactive mode, a dependency on the detector location or on the type of detector can be taken as a basis and the inactive mode can be carried out manually or automatically.

Erfindungsgemäß ist es somit möglich, die gesamte Übertragungs­kapazität derart aufzuteilen, daß jede einzelne Übertragungsein­richtung bzw. der entsprechende Gefahrenmelder je nach Bedürfnis unterschiedlich oft aufgerufen wird, bzw. unterschiedlich lange Steuersignale erhält, und unterschiedlich lange Gefahrenmeldun­gen absetzt. Auf diese Weise läßt sich die verfügbare Übertra­gungskapazität optimal nutzen, so daß ein preiswertes, univer­sell nutzbares Übertragungssystem für Gefahrenmeldungen entsteht. Selbstverständlich ist jederzeit bei einer entsprechenden An­steuerung weiterhin der Betrieb mit der bekannten, einheitlichen Kettensynchronisation möglich und vorsehbar.According to the invention, it is thus possible to divide the total transmission capacity in such a way that each individual transmission device or the corresponding hazard detector is called up different times as required or receives control signals of different lengths, and issues hazard messages of different lengths. In this way, the available transmission capacity can be used optimally, so that an inexpensive, universally usable transmission system for hazard reports is created. Of course, operation with the known, uniform chain synchronization is still possible and foreseeable with appropriate control.

Claims (8)

1. Verfahren zur Datenübertragung in einer Gefahrenmeldeanlage, die eine Zentrale mit mehreren Meldelinien und pro Meldelinie eine Vielzahl von kettenförmig anschaltbaren Gefahrenmeldern mit unterschiedlichen Meldungsprioritäten aufweist, wobei die Gefahrenmelder von der Zentrale aus zyklisch auf ihre Melde­signale abgefragt werden und mit einem Steuersignal ansteuer­bar sind,
dadurch gekennzeichnet,
daß bei der Inbetriebnahme der Gefahrenmeldeanlage oder mit dem Steuersignal Gefahrenmelder mit niederer Meldungsrate für eine vorgebbare Zeitdauer in einen inaktiven Zustand geschaltet werden, und daß für diese Zeit die betreffenden Gefahrenmelder bei der Abfrage kein Meldesignal abgeben und zum nächsten Gefahrenmelder zumindest beschleunigt durchschalten.1.Procedure for data transmission in a hazard alarm system which has a control center with a plurality of alarm lines and a plurality of alarm detectors which can be connected in a chain with different alarm priorities, the security alarms being polled cyclically from the alarm center for their alarm signals and being controllable with a control signal,
characterized,
that when the hazard alarm system is started up or with the control signal, hazard detectors with a low notification rate are switched to an inactive state for a predeterminable period of time, and that during this time the hazard detectors concerned do not emit a signal signal when queried and switch through to the next hazard detector at least accelerated. 2. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Gefahren­melder mit niederer Meldungsrate zu bestimmten Zeitpunkten inaktiv geschaltet werden.2. The method according to claim 1,
characterized in that the hazard detectors with a low notification rate are switched inactive at certain times. 3. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Zeitdauer von einem melderinternen Zeitgeber bestimmt ist.3. The method according to claim 1 or 2,
characterized in that the time period is determined by an internal timer. 4. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Zeitdauer von einem melderinternen Zähler für die Abfragen bestimmt ist.4. The method according to claim 1 or 2,
characterized in that the time period is determined by an internal detector counter for the queries. 5. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Zeitdauer von der Zentrale aus bestimmt wird, wobei die inaktiv geschal­teten Gefahrenmelder mit einem weiteren Steuersignal wieder aktiviert werden.5. The method according to claim 1 or 2,
characterized in that the time period is determined from the control center, the inactive hazard detectors being reactivated with a further control signal. 6. Verfahren nach einem der vorhergehenden Ansprüchen,
dadurch gekennzeichnet, daß die Inaktiv­schaltung abhängig von dem Meldeort oder der Meldeart manuell oder automatisch erfolgt.6. The method according to any one of the preceding claims,
characterized in that the inactive switching takes place manually or automatically depending on the reporting location or the reporting type. 7. Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die inaktiv geschalteten Gefahrenmelder für die Zeitdauer des inaktiven Zustandes durchgeschaltet bleiben.7. The method according to any one of the preceding claims,
characterized in that the inactive hazard detectors remain on for the duration of the inactive state. 8. Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß das Steuersignal von einem bestimmten Spannungsimpuls oder von einem bestimmten Wert der Linienspannung gebildet ist.8. The method according to any one of the preceding claims,
characterized in that the control signal is formed by a certain voltage pulse or by a certain value of the line voltage.
EP89111766A 1989-06-28 1989-06-28 Method for data transmission in an alarm signalling device Expired - Lifetime EP0404976B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT89111766T ATE101740T1 (en) 1989-06-28 1989-06-28 PROCEDURE FOR DATA TRANSMISSION IN AN ALARM SYSTEM.
EP89111766A EP0404976B1 (en) 1989-06-28 1989-06-28 Method for data transmission in an alarm signalling device
ES89111766T ES2048792T3 (en) 1989-06-28 1989-06-28 PROCEDURE FOR THE TRANSMISSION OF DATA IN A DANGER NOTICE INSTALLATION.
DE89111766T DE58907006D1 (en) 1989-06-28 1989-06-28 Process for data transmission in a hazard alarm system.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89111766A EP0404976B1 (en) 1989-06-28 1989-06-28 Method for data transmission in an alarm signalling device

Publications (2)

Publication Number Publication Date
EP0404976A1 true EP0404976A1 (en) 1991-01-02
EP0404976B1 EP0404976B1 (en) 1994-02-16

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EP89111766A Expired - Lifetime EP0404976B1 (en) 1989-06-28 1989-06-28 Method for data transmission in an alarm signalling device

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EP (1) EP0404976B1 (en)
AT (1) ATE101740T1 (en)
DE (1) DE58907006D1 (en)
ES (1) ES2048792T3 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310127A1 (en) * 1973-03-01 1974-09-05 Licentia Gmbh INTEGRATED HAZARD REPORTING SYSTEM
DE2533382B1 (en) * 1975-07-25 1976-10-21 Siemens Ag Method and device for the transmission of measured values in a fire alarm system
DE2533354A1 (en) * 1975-07-25 1977-01-27 Siemens Ag PROCEDURE AND DEVICE FOR TRANSFERRING CONTROL COMMANDS IN A FIRE PROTECTION SYSTEM
EP0254125A1 (en) * 1986-07-10 1988-01-27 Siemens Aktiengesellschaft Danger signalling system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2310127A1 (en) * 1973-03-01 1974-09-05 Licentia Gmbh INTEGRATED HAZARD REPORTING SYSTEM
DE2533382B1 (en) * 1975-07-25 1976-10-21 Siemens Ag Method and device for the transmission of measured values in a fire alarm system
DE2533354A1 (en) * 1975-07-25 1977-01-27 Siemens Ag PROCEDURE AND DEVICE FOR TRANSFERRING CONTROL COMMANDS IN A FIRE PROTECTION SYSTEM
EP0254125A1 (en) * 1986-07-10 1988-01-27 Siemens Aktiengesellschaft Danger signalling system

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ATE101740T1 (en) 1994-03-15
DE58907006D1 (en) 1994-03-24
EP0404976B1 (en) 1994-02-16
ES2048792T3 (en) 1994-04-01

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