EP0178474A2 - Method and arrangement for the detector identification of a hazard detection system - Google Patents
Method and arrangement for the detector identification of a hazard detection system Download PDFInfo
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- EP0178474A2 EP0178474A2 EP85111762A EP85111762A EP0178474A2 EP 0178474 A2 EP0178474 A2 EP 0178474A2 EP 85111762 A EP85111762 A EP 85111762A EP 85111762 A EP85111762 A EP 85111762A EP 0178474 A2 EP0178474 A2 EP 0178474A2
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 title description 5
- 230000011664 signaling Effects 0.000 claims abstract description 20
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims abstract description 6
- 230000001960 triggered effect Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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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
- G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
- G08B26/002—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel only replying the state of the sensor
Definitions
- the invention relates to a method for detector identification in a hazard alarm system, in particular fire alarm system, according to the preamble of claim 1 and to an arrangement for performing the method.
- Hazard detection systems with detector identification are known per se. They generally require specially designed detectors, the addresses of which must be encoded in the individual detector for identification. Corresponding evaluation devices in the control center can then determine and display the address of the concerned meider from the code transmitted or queried by the detector.
- a signaling system which has a control center and at least one signaling line with detectors connected in parallel.
- each detector has a decoder for a pulse of different lengths assigned to it by the control center in the form of line voltage sent address and an alarm suppression circuit arranged.
- the alarm signal is suppressed when the first address pulse is received by the alarming detector and, if the address of the detector concerned is correctly decoded, the alarm signal is returned to the signaling line.
- the known signaling system has the disadvantage, however, that the encoder causes an additional current requirement because the encoder must also be kept ready for operation in the idle state so that the alarm can be triggered via it if the detector itself does not do so due to the superimposed interference voltage and its alarm suppression circuit Location is
- the power supply of the control center is generally limited, not all alarming detectors, if several detectors of one zone give alarm at the same time, the associated alarm display on the detector can be supplied with sufficient power. A reliable alarm display on the detectors is then not guaranteed
- each detector has an addressing module with which an alarm signal from a triggering detector is initially given to the alarm line at a time-limited time. After that, the message line is free for the address query. The detector does not require any additional electricity until the message is received.
- the addressing block has determined the address of its assigned detector from the pulse sequence of the query pulses. i.e. if the queried detector address matches the detector's set address, the detector in question releases its alarm again in the form of a sudden increase in current.
- the detectors If several detectors have given an alarm on a line, they are triggered one after the other so that the limited current available on a signaling line is sufficient in any case to ensure a reliable alarm display on the relevant detector, which is even sufficient in order to supply an additional Meldar display located on the relevant detector with sufficient energy.
- the sudden increase in current is detected with an evaluation device, and the respective address of the alarming detector is determined and displayed from the number of query pulses up to the increase in current.
- the interrogation pulses are expediently formed by pulse-wise lowering of the line voltage. These counting pulses given by the center to the signaling line have a constant duration in a simple manner. These counting pulses are counted in the addressing module of the detector and when the set counter status is reached, the alarm criterion is given to the signaling line.
- An expedient arrangement for carrying out the method has an addressing module, which is assigned to each detector.
- a current limiter is arranged between the actual detector (sensor) and the signaling line, which limits the current when the detector gives an alarm so that a direct current increase does not occur directly at the Message line can be generated.
- the alarm output for the duration of the timer is limited via an alarm timer, which is connected downstream of the detector of the detector on the reporting line
- FIG. 1 shows an addressing module for identifying an alarm-triggering detector and FIGS. 2 and 3 show pulse diagrams for detector identification.
- a detector M1 and an addressing block AB on the signal line ML is shown.
- the message line ML leads on the one hand to the central station Z and on the other hand to further detectors M2 or addressing blocks AB.
- the detector M1 is connected to the signal line ML via the voltage limiter SB.
- a timer ZG and a counter ZA are also connected downstream of the detector.
- the timer ZG is controlled directly by the detector M1 when it gives an alarm and for the duration (TV) of the timer ZG via the transistor TR1 and the Zener diode Z1, both of which are connected in series on the signal line ML, the alarm message (AL ML ) to the ML reporting line.
- This alarm message is recognized in the control center Z as an alarm of the message line ML because a voltage drop ULA is generated with the alarm triggering detector.
- the counter ZA has at its reset input R an RC element R4, C1, which is connected as a series connection to the signaling line. Via this RC element, the counter ZA is reset before the detector is queried.
- the query impulses from the control center reach the clock input T of the counter ZA via the signal line and the diode D1.
- the counter ZA has outputs A1 to An and depending on the soft output, the downstream controllable switching element, the transistor TR2, is connected, the transistor TR2 turns on.
- the transistor TR2 is connected to the message line ML via the message display MA and a resistor R7.
- a second Zener diode Z2 is arranged parallel to the detector display MA and the resistor. If the interrogation pulse matches the set counter reading, the Zener diode Z2 applies a specific voltage value (ULA Mi) to the line as a detector alarm (AL Mi).
- An additional detector display MAZ can also be assigned to the detector M1 or the addressing module AB, as shown in the drawing. The method according to the invention is briefly explained again with reference to FIGS. 2 and 3.
- FIG. 2 shows a pulse diagram of the line voltage UL and FIG. 3 shows a pulse diagram of the line current IL. If the signal line is at rest, there is a quiescent voltage ULR, generally 20 volts, on the signal line (ML).
- AL alarm message
- the alarming detector causes an alarm message (AL ML) in the form of a voltage dip ULA ML on the message line for a specific time TV, which corresponds to the duration of the timer (ZG).
- the message line is free for the query impulses that are sent from the control center.
- TP short pause
- ILA Mi current limit
- the counters of the individual detectors are reset to the initial position.
- the interrogation pulses AFIP in the form of counting pulses with the same duration are given to the signal line by a pulse-wise lowering of the line rest voltage ULR.
- the third detector (M3) is the alarm-triggering detector
- the third counting pulse causes the alarm message AL M3 of the third detector at time t5. Since the control center the pulse sequence of the query pulses in the event of an alarm message for a specific
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Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zur Melderidentifizierung in einer Gefahrenmeldeanlage, insbesondere Brandmeldeanlage, gemäß dem Oberbegriff des Patentanspruchs 1 und auf eine Anordnung zur Durchführung des Verfahrens.The invention relates to a method for detector identification in a hazard alarm system, in particular fire alarm system, according to the preamble of claim 1 and to an arrangement for performing the method.
In bekannten Gefahrenmeldeanlagen können bis zu 30 Melder an einer Zweidraht-Meldeteitung angeschlossen sein. Löst ein Melder Alarm aus, so wird in der Zentrale die betreffende Meldeleitung angezeigt In zunehmenden Maße besteht jedoch der Wunsch, auftretende Alarme oder sonstige Ereignisse wie z.B. Störung durch Leitungsbruch oder Kurzschluß, genauer lokalisieren zu können. Daher wurden Gefahrenmeldeanlagen geschaffen, die eine Einzeiidentifizierung der Melder ermöglichen.In known alarm systems, up to 30 detectors can be connected to a two-wire signal line. If a detector triggers an alarm, the relevant message line is displayed in the control center. However, there is an increasing desire to trigger alarms or other events such as Malfunction due to line break or short circuit to be able to localize more precisely. For this reason, hazard alarm systems have been created that enable the detectors to be identified one by one.
In modernen Gefahrenmeldeanlagen, wie sie beispielsweise aus der Pulsmeldetechnik ( DE-PS 2533382) bekannt sind, ist die Melderidentifizierung ohne weiteres möglich. Derartige Meldeanlagen verwenden spezielle Melder und Zentralen, so daß eine Umrüstung bestehender Anlagen erforderlich wäre. Vielfach besteht jedoch der Wunsch, bestehende Anlagen zumindest teilweise so zu ergänzen, daß einzelne Melder identifiziert werden können. Gefahrenmeldesnlagen mit Melderidentifizierung sind an sich bekannt Sie erfordern dabei im allgemeinen besonders ausgestaltete Melder, deren Adresse zur Identifizierung jeweils im einzelnen Melder codiert werden muß. Entsprechende Auswerteeinrichtungen in der Zentrale können dann bei Alarmgabe aus dem vom Melder übertragenen oder abgefragten Code die Adresse des betreffenden Meiders ermitteln und anzeigen.In modern hazard detection systems, such as are known, for example, from pulse detection technology (DE-PS 2533382), detector identification is readily possible. Such alarm systems use special detectors and control panels, so that it would be necessary to retrofit existing systems. However, there is often a desire to at least partially supplement existing systems so that individual detectors can be identified. Hazard detection systems with detector identification are known per se. They generally require specially designed detectors, the addresses of which must be encoded in the individual detector for identification. Corresponding evaluation devices in the control center can then determine and display the address of the concerned meider from the code transmitted or queried by the detector.
Aus der DE-OS 3128796 ist eine Meldeanlage bekannt, die eine Zentrale und zumindest eine Meldeleitung mit parallel angeschalteten Meldern aufweist Bei der bekannten Meldeanlage sind in jedem Melder ein Decoder für eine ihm zugeordnete, von der Zentrale in Form von der Linienspannung überlagerten Impulsen unterschiedlicher Länge gesendeten Adresse und einer Alarmunterdrückungsschaltung angeordnet. Dabei wird beim alarmgebenden Melder mit dem Empfang des ersten Adressenimpulses das Alarmsignal unterdrückt und bei richtiger Decodierung der Adresse des betreffenden Melders das Alarmsignal wieder auf die Meldeleitung gegeben.From DE-OS 3128796 a signaling system is known which has a control center and at least one signaling line with detectors connected in parallel. In the known signaling system, each detector has a decoder for a pulse of different lengths assigned to it by the control center in the form of line voltage sent address and an alarm suppression circuit arranged. The alarm signal is suppressed when the first address pulse is received by the alarming detector and, if the address of the detector concerned is correctly decoded, the alarm signal is returned to the signaling line.
Die bekannte Meldeanlage hat jedoch den Nachteil, daß der Codierer einen zusätzlichen Strombedarf verursacht, weil der Codierer auch im Ruhezustand betriebsbereit gehalten werden muß, damit über ihn der Alarm abgesetzt werden kann, falls der Melder selbst wegen überlagerter Störspannung und seine Alarmunterdrückungsschaltung hierzu nicht in der Lage ist Da das Stromangebot der Zentrale im allgemeinen begrenzt ist, kann nicht bei allen alarmgebenden Meldern, wenn mehrere Melder einer Meldelinie gleichzeitig Alarm geben, die zugehörige Alarmanzeige am Melder ausreichend mit Strom versorgt werden. Es ist dann keine zuverlässige Alarmanzeige an den Meldern gewährleistetThe known signaling system has the disadvantage, however, that the encoder causes an additional current requirement because the encoder must also be kept ready for operation in the idle state so that the alarm can be triggered via it if the detector itself does not do so due to the superimposed interference voltage and its alarm suppression circuit Location is As the power supply of the control center is generally limited, not all alarming detectors, if several detectors of one zone give alarm at the same time, the associated alarm display on the detector can be supplied with sufficient power. A reliable alarm display on the detectors is then not guaranteed
Aufgabe der Erfindung ist es daher, die geschildeten Nachteile zu vermeiden und für eine eingangs geschilderte Gefahrenmeldeanlage ein Verfahren und eine Anordnung hierfür anzugeben, das bzw. die eine zuverlässige Identifizierung der alarmauslösenden Melder in der Zentrale und an den betreffenden Meldem ermöglicht Dabei sollen die einzelnen Melder eine einfache Schaltungsanordnung mit wenig Bauelementen aufweisen.It is therefore an object of the invention to avoid the disadvantages described and to provide a method and an arrangement for a hazard alarm system described at the outset which enables reliable identification of the alarm-triggering detectors in the control center and to the detectors in question have a simple circuit arrangement with few components.
Diese Aufgabe wird bei einer oben geschilderten Gefahrenmeldeanlage erfindungsgemäß bezüglich des Verfahrens mit den kennzeichnenden Merkmalen des Anspruchs 1 und bezüglich der Anordnung mit den Merkmalen des Anspruchs 5 gelöst.This object is achieved according to the invention in a hazard alarm system described above with regard to the method with the characterizing features of claim 1 and with regard to the arrangement with the features of
Bei dem erfindungsgemäßen Verfahren zur Melderidentifizierung in einer Gefahrenmeldeanlage weist jeder Melder einen Adressierbaustein auf, mit dem eine Alsarmmeldung eines auslösenden Melders zunächst zeitbegrenat auf die Meldeleitung gegeben wird. Danach ist die Meldeleitung für die Adressenabfrage frei. Bis zur Meldung weist der Melder keinen zusätzlichen Strombedarf auf. Wenn der Adressierbaustein aus der Impulsfolge der Abfrageimpulse die Adresse seines zugeordneten Melders ermittelt hat. d.h. wenn die abgefragte Melderadresse mit der eingestellten Melderadresse des Melders übereinstimmt, gibt der betreffende Melder in Form eines sprunghaften Stromanstieges seine Alarmmeldung erneut ab. Wenn mehrere Melder auf einer Linie Alarm gegeben haben, werden diese der Reihe nach zur erneuten Alarmgabe veranlaßt, so daß die begrenzt zur Verfügung stehende Stromstärke auf einer Meldeleitung in jedem Fall ausreichend ist um eine sichere Alarmanzeige am betreffenden Melder zu gewährleisten, die sogar ausreichend ist, um eine zusätzlich am betreffenden Melder angeordnete Meldaranzeige mit ausreichender Energie zu versorgen. In der Zentrale wird mit einer Auswerteeinrichtung der sprunghafte Stromanstieg jeweils detektiert und aus der Anzahl der Abfrageimpulse bis zum Stromanstieg die jeweilige Adresse des alarmgebenden Melders ermittelt und angezeigt.In the method according to the invention for the identification of detectors in a hazard detection system, each detector has an addressing module with which an alarm signal from a triggering detector is initially given to the alarm line at a time-limited time. After that, the message line is free for the address query. The detector does not require any additional electricity until the message is received. When the addressing block has determined the address of its assigned detector from the pulse sequence of the query pulses. i.e. if the queried detector address matches the detector's set address, the detector in question releases its alarm again in the form of a sudden increase in current. If several detectors have given an alarm on a line, they are triggered one after the other so that the limited current available on a signaling line is sufficient in any case to ensure a reliable alarm display on the relevant detector, which is even sufficient in order to supply an additional Meldar display located on the relevant detector with sufficient energy. In the control center, the sudden increase in current is detected with an evaluation device, and the respective address of the alarming detector is determined and displayed from the number of query pulses up to the increase in current.
Zweckmäßigerweise werden die Abfrageimpulse durch pulsweises Absenken der Linienspannung gebildet. Diese von der Zentrale auf die Meldeleitung gegebenen Zählimpulse weisen in einfacher Weise eine konstante Zeitdauer auf. Im Adressierbaustein des Melders werden diese Zählimpulse gezählt und mit dem Erreichen des eingestellten Zählerstandes wird das Alamkriterium auf die Meldeleitung gegeben.The interrogation pulses are expediently formed by pulse-wise lowering of the line voltage. These counting pulses given by the center to the signaling line have a constant duration in a simple manner. These counting pulses are counted in the addressing module of the detector and when the set counter status is reached, the alarm criterion is given to the signaling line.
Bei dem erfindungsgemäßen Verfahren ist es zweckmäßig die Impulsfolge der Abfrageimpulse jeweils für eine vorgegebene Zeit zu unterbrechen, sobald ein alarmgebender Melder, wenn er seine Adresse richtig erkannt hat, die Alarmmeldung zur Zentrale überträgt. Dadurch ist für den alarmgebenden Melder eine sichere und deutiiche Anzeige der betreffenden Meldeanzeige möglich. In vorteilhafter Weise wird eine alarmgebende Meldeleitung wiederholte Male abgefragt, solange bis die Meldeleitung wieder zurückgestellt wird.In the method according to the invention, it is expedient to interrupt the pulse sequence of the query pulses for a predetermined time as soon as an alarming transmitter, if it has correctly recognized its address, transmits the alarm message to the control center. This enables the alarming detector to display the relevant alarm display securely and clearly. Advantageously, an alarm-giving signal line is queried repeatedly until the signal line is reset.
Eine zweckmäßige Anordnung zur Durchführung des Verfahrens weist einen Adressierbaustein auf, der jeweils einem Melder zugeordnet ist Zwischen dem eigentlichen Melder (Sensor) und der Meldeleitung ist ein Strombegrenzer angeordnet der bei Alarmgabe des Melders den Strom so begrenzt, daß ein unmittelbarer Stromanstieg nicht direkt an der Meldeleitung erzeugt werden kann. Erfindungsgemäß wird über ein Alarmzeitglied, das dem Melder nachgeschaltet ist die Alarmgabe für die Zeitdauer des Zeitgliedes begrenzt Der Adressierbaustein weist einen Zähler auf, der die Abfrageimpulse zählt und bei entsprechend eingestellter Adresse über einen Schalttransistor, der dem Zähler nachgeschattet ist, und eine Melderanzeige eine Alarmmeldung des Melders auf die Meldeleitung gibtAn expedient arrangement for carrying out the method has an addressing module, which is assigned to each detector. A current limiter is arranged between the actual detector (sensor) and the signaling line, which limits the current when the detector gives an alarm so that a direct current increase does not occur directly at the Message line can be generated. According to the invention, the alarm output for the duration of the timer is limited via an alarm timer, which is connected downstream of the detector of the detector on the reporting line
Weitere Einzelheiten und vorteilhafte Ausgestaltungen der Erfindung werden an einem Ausführungsbeispiel anhand der Zeichnung erläutert Dabei zeigen die Fig. 1 einen Adressierbaustein zur Identifizierung eines Alarm auslösenden Melders und die Fig. 2 und 3 Pulsdiagramme für die Melderidentifizierung.Further details and advantageous refinements of the invention are explained using an exemplary embodiment with reference to the drawing. FIG. 1 shows an addressing module for identifying an alarm-triggering detector and FIGS. 2 and 3 show pulse diagrams for detector identification.
In Fig. 1 ist ein Melder M1 und ein Adressierbaustein AB an der Meldeleitung ML dargestellt. Die Meldeleitung ML führt einerseits zur Zentrale Z und andererseits zu weiteren Meldern M2 bzw. Adressierbausteinen AB. Der Melder M1 ist über den Spannungsbegrenzer SB an die Meldeleitung ML angeschlossen. Ferner ist dem Melder ein Zeitglied ZG und ein Zähler ZA nachgeschaltet. Das Zeitglied ZG wird vom Melder M1, wenn er Alarm gibt direkt angesteuert und gibt für die Zeitdauer (TV) des Zeitgliedes ZG über den Transistor TR1 und die Zenerdiode Z1, die beide in Reihe geschaltet an der Meldeleitung ML liegen, die Alarmmeldung (AL ML) auf die Meldeleitung ML. Diese Alarmmeldung wird in der Zentrale Z als Alarm der Meldeleitung ML erkannt, weil mit dem Alarm auslösenden Melder ein Spannungseinbruch ULA erzeugt wird. Der Zähler ZA weist an seinem Rücksetzeingang R ein RC-Glied R4, C1 auf, das als Serienschaltung an die Meldeleitung angeschlossen ist Über dieses RC-Glied wird vor der Melderabfrage der Zähler ZA zurückgesetzt. Die Abfrageimpulse der Zentrale gelangen über die Meldeleitung und über die Diode D1 an den Takteingang T des Zählers ZA. Der Zähler ZA weist Ausgänge A1 bis An auf und je nachdem an weichem Auagang das nachgeschaltete steuerbare Schaltelement, der Transistor TR2, angeschlossen ist, schaltet der Transistor TR2 durch. Der Transistor TR2 ist über die Meldeanzeige MA und einen Widerstand R7 an die Meldeleitung ML angeschlossen. Parallel zur Melderanzeige MA und dem Widerstand ist eine zweite Zenerdiode Z2 angeordnet Stimmt der Abfrageimpuls mit dem eingestellten Zählerstand überein, so prägt die Zenerdiode Z2 der Linie einen bestimmten Spannungswert (ULA Mi) als Melderalarm (AL Mi) auf. Dem Melder M1 bzw. dem Adressierbaustein AB kann noch eine zusätzliche Melderanzeige MAZ zugeordnet sein, wie dies in der Zeichnung dargestellt ist. Das erfindungsgemäße Verfahren wird nochmals kurz an den Fig. 2 und 3, erläutert Die Fig. 2 stellt ein Pulsdiagramm der Linienspannung UL und die Fig. 3 ein Pulsdiagramm des Linienstromes IL dar. Befindet sich die Meldeleitung in Ruhe, so liegt eine Ruhespannung ULR, im allgemeinen 20 Volt,an der Meldeleitung (ML). Dabei fließt ein Ruhestrom ILR von beispielsweise 5 mA auf der Meldeleitung. Tritt zum Zeitpunkt t1 ein Alarm AL auf der Meldeleitung ML auf, so verursacht der alarmgebende Melder für eine bestimmte Zeit TV,die der Zeitdauer des Zeitglieds (ZG) entspricht, eine Alarmmeldung (AL ML) in Form eines Spannungseinbruchs ULA ML auf der Meldeleitung. Nach dieser begrenzten Alarmzeit TV ist die Meldeleitung frei für die Abfrageimpulse, die von der Zentrale aus gesendet werden. Nach einer kurzen Zeitpause TP, also zum Zeitpunkt t3 wird die Abfrage mit erhöhter Strombegrenzung ILA Mi; z.B. 100 mA) gestartet. Durch das kurzzeitige Abtrennen der Meldeleitung von der Linienspannung (RSIP) werden die Zähler der einzelnen Melder zuvor in Ausgangsstellung zurückgesetzt. Zum Zeitpuntk t4 werden die Abfrageimpulse AFIP in Form von Zählimpulsen mit gleicher Zeitdauer auf die Meldeleitung durch ein pulsweises Absenken der Linienruhespannung ULR gegeben. Ist beispielsweise von der Zentrale aus gesehen der dritte Melder (M3) der alarmauslösende Melder, so bewirkt der dritte Zählimpuls die Alarmmeldung AL M3 des dritten Melders zum Zeitpunkt t5. Da die Zentrale die Impulsfolge der Abfrageimpulse bei einer Alarmmeldung für eine bestimmteIn Fig. 1, a detector M1 and an addressing block AB on the signal line ML is shown. The message line ML leads on the one hand to the central station Z and on the other hand to further detectors M2 or addressing blocks AB. The detector M1 is connected to the signal line ML via the voltage limiter SB. A timer ZG and a counter ZA are also connected downstream of the detector. The timer ZG is controlled directly by the detector M1 when it gives an alarm and for the duration (TV) of the timer ZG via the transistor TR1 and the Zener diode Z1, both of which are connected in series on the signal line ML, the alarm message (AL ML ) to the ML reporting line. This alarm message is recognized in the control center Z as an alarm of the message line ML because a voltage drop ULA is generated with the alarm triggering detector. The counter ZA has at its reset input R an RC element R4, C1, which is connected as a series connection to the signaling line. Via this RC element, the counter ZA is reset before the detector is queried. The query impulses from the control center reach the clock input T of the counter ZA via the signal line and the diode D1. The counter ZA has outputs A1 to An and depending on the soft output, the downstream controllable switching element, the transistor TR2, is connected, the transistor TR2 turns on. The transistor TR2 is connected to the message line ML via the message display MA and a resistor R7. A second Zener diode Z2 is arranged parallel to the detector display MA and the resistor. If the interrogation pulse matches the set counter reading, the Zener diode Z2 applies a specific voltage value (ULA Mi) to the line as a detector alarm (AL Mi). An additional detector display MAZ can also be assigned to the detector M1 or the addressing module AB, as shown in the drawing. The method according to the invention is briefly explained again with reference to FIGS. 2 and 3. FIG. 2 shows a pulse diagram of the line voltage UL and FIG. 3 shows a pulse diagram of the line current IL. If the signal line is at rest, there is a quiescent voltage ULR, generally 20 volts, on the signal line (ML). A quiescent current ILR of, for example, 5 mA flows on the signal line. If an alarm AL occurs on the message line ML at the time t1, the alarming detector causes an alarm message (AL ML) in the form of a voltage dip ULA ML on the message line for a specific time TV, which corresponds to the duration of the timer (ZG). After this limited alarm time TV, the message line is free for the query impulses that are sent from the control center. After a short pause TP, that is to say at time t3, the query with increased current limit ILA Mi; e.g. 100 mA) started. By briefly disconnecting the signal line from the line voltage (RSIP), the counters of the individual detectors are reset to the initial position. At time point t4, the interrogation pulses AFIP in the form of counting pulses with the same duration are given to the signal line by a pulse-wise lowering of the line rest voltage ULR. If, for example, the third detector (M3) is the alarm-triggering detector, the third counting pulse causes the alarm message AL M3 of the third detector at time t5. Since the control center the pulse sequence of the query pulses in the event of an alarm message for a specific
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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AT85111762T ATE71465T1 (en) | 1984-09-20 | 1985-09-17 | DETECTOR IDENTIFICATION PROCEDURE AND ARRANGEMENTS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3434556 | 1984-09-20 | ||
DE3434556 | 1984-09-20 |
Publications (3)
Publication Number | Publication Date |
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EP0178474A2 true EP0178474A2 (en) | 1986-04-23 |
EP0178474A3 EP0178474A3 (en) | 1988-07-20 |
EP0178474B1 EP0178474B1 (en) | 1992-01-08 |
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Application Number | Title | Priority Date | Filing Date |
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EP85111762A Expired - Lifetime EP0178474B1 (en) | 1984-09-20 | 1985-09-17 | Method and arrangement for the detector identification of a hazard detection system |
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EP (1) | EP0178474B1 (en) |
AT (1) | ATE71465T1 (en) |
DE (1) | DE3585127D1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1109143A2 (en) * | 1999-12-15 | 2001-06-20 | Job Lizenz GmbH & Co. KG | Method and device for determining the defective detectors in an alarm system |
EP1335337A1 (en) * | 2002-02-07 | 2003-08-13 | Arturo Schettino | Computer- or telephone-controllable programmable antitheft system, having an identification of the state of single protection fittings. |
EP2339557A3 (en) * | 2009-12-22 | 2013-07-24 | Minimax GmbH & Co KG | Test device for warning systems |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128796A1 (en) * | 1981-07-21 | 1983-02-10 | Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss | Fire or intrusion detection system |
EP0093095A2 (en) * | 1982-04-23 | 1983-11-02 | Cerberus Ag | A method and an apparatus for identifying a detector giving an alarm in a loop circuit having a predetermined number of detectors connected in parallel |
EP0111178A1 (en) * | 1982-11-23 | 1984-06-20 | Cerberus Ag | Control device with several detectors connected in chain form to a signal line |
-
1985
- 1985-09-17 AT AT85111762T patent/ATE71465T1/en not_active IP Right Cessation
- 1985-09-17 DE DE8585111762T patent/DE3585127D1/en not_active Expired - Fee Related
- 1985-09-17 EP EP85111762A patent/EP0178474B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3128796A1 (en) * | 1981-07-21 | 1983-02-10 | Esser Sicherheitstechnik GmbH & Co KG, 4040 Neuss | Fire or intrusion detection system |
EP0093095A2 (en) * | 1982-04-23 | 1983-11-02 | Cerberus Ag | A method and an apparatus for identifying a detector giving an alarm in a loop circuit having a predetermined number of detectors connected in parallel |
EP0111178A1 (en) * | 1982-11-23 | 1984-06-20 | Cerberus Ag | Control device with several detectors connected in chain form to a signal line |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1109143A2 (en) * | 1999-12-15 | 2001-06-20 | Job Lizenz GmbH & Co. KG | Method and device for determining the defective detectors in an alarm system |
EP1109143A3 (en) * | 1999-12-15 | 2002-08-14 | Job Lizenz GmbH & Co. KG | Method and device for determining the defective detectors in an alarm system |
EP1335337A1 (en) * | 2002-02-07 | 2003-08-13 | Arturo Schettino | Computer- or telephone-controllable programmable antitheft system, having an identification of the state of single protection fittings. |
EP2339557A3 (en) * | 2009-12-22 | 2013-07-24 | Minimax GmbH & Co KG | Test device for warning systems |
EP2747046A3 (en) * | 2009-12-22 | 2017-05-17 | Minimax GmbH & Co KG | Test device for warning systems |
Also Published As
Publication number | Publication date |
---|---|
ATE71465T1 (en) | 1992-01-15 |
EP0178474A3 (en) | 1988-07-20 |
DE3585127D1 (en) | 1992-02-20 |
EP0178474B1 (en) | 1992-01-08 |
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