EP0532787B1 - Device for operating hazard detectors - Google Patents
Device for operating hazard detectors Download PDFInfo
- Publication number
- EP0532787B1 EP0532787B1 EP91115957A EP91115957A EP0532787B1 EP 0532787 B1 EP0532787 B1 EP 0532787B1 EP 91115957 A EP91115957 A EP 91115957A EP 91115957 A EP91115957 A EP 91115957A EP 0532787 B1 EP0532787 B1 EP 0532787B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loop
- line
- case
- detector
- detectors
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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 device for operating hazard detectors, which are arranged in a loop-shaped double line (detection loop) in a hazard detection system.
- a large number of detectors are connected to the system center via a loop-shaped double line. Via this double line, the energy supply of the detectors is carried out, as well as the data traffic with the control center.
- a loop-shaped design it is possible to cut the line or loop at the point of the fault in the event of a line fault (interruption or short circuit), e.g. with a separating element, and to supply and query the separated rest of the detectors from the other side of the detection loop with energy.
- a device is e.g. known from DE-A-3637681.
- the hazard detection system can have significantly more hazard detectors per loop.
- the object of the invention is therefore to avoid the disadvantages described above and to provide an arrangement which allows the loop length to be increased significantly without increasing the copper cross section or reducing the energy requirement of the detectors and without normally delaying the alarming.
- a separating element approximately in the middle of the signaling loop ensures that the signaling loop is broken in fault-free operation, ie in the normal case, so that the two partial loops thus created are operated as a stub or star line. Only in the event of a fault is the signaling loop closed again, so that the signaling loop can then be operated from both sides, at least up to the point of the fault, which can be located and is appropriately separated in a known manner by means of so-called separating elements.
- the isolating element is expediently designed in such a way that it can be controlled from the central station from one side as well as from the other side of the message loop.
- a control device is advantageously provided in the isolating element, which controls, depending on the operating state of the hazard alarm system, at least one switch which is arranged in one of the two wires of the alarm loop.
- switches can be part of an electromagnetic relay or can be formed by a semiconductor, for example a VMOS transistor.
- the control device itself is expediently formed by a microcomputer.
- FIG. 1 A conventional loop arrangement is shown schematically in FIG. 1.
- the two wires a, b of the message instruction MLH are connected to the central station Z at a first connection unit A1, which lead back to the central station Z as a loop MS and are connected to the second connection unit A2 with the two wires a, b and the signal return line MLR form.
- the separating elements known per se, which are used to separate disturbed line sections, are not specifically shown here.
- the total number of detectors connected here is N; detectors M1 to Mm are connected on the MLH message instructions, while detectors Mn to M (m-1) are connected on the MLR return line.
- N The total number of detectors connected here is N; detectors M1 to Mm are connected on the MLH message instructions, while detectors Mn to M (m-1) are connected on the MLR return line.
- N The total number of detectors connected here is N; detectors M1 to Mm are connected on the MLH message instructions, while detectors Mn to M (m-1) are connected on the MLR return line.
- FIG. 2 shows the device according to the invention, which has a separating element TG, which is arranged approximately in the middle of the message line or the message loop MS.
- a separating element TG which is arranged approximately in the middle of the message line or the message loop MS.
- FIG. 2 shows schematically in FIG. 2, essentially similar to FIG. 2 of FIG. 1 with the exception of the isolating element TG, which is arranged in the loop MS between the message instruction MLH and the message return line MLR and, in the separated state, enables two sub-loops TS .
- the same number of detectors M1, 2,... Are arranged on both sub-loops TS, so that line resistances of approximately the same size are also present.
- FIG. 3 shows a basic illustration of the separating element TG according to the invention. It is connected to the MLH message instructions via terminals a1 and b1 and to the MLR signal return line via terminals a2, b2.
- the Control device ST recognizes the signals of the message instruction MLH via the control inputs Ma1 / Mb1 and the signals of the signal return line MLR via the control inputs Ma2 / Mb2 and actuates the switches Sa and Sb in the wires depending on the operating state of the two partial loops TS via the control device ST a, b of the message loop MS are arranged.
- the isolating element TG is activated in such a way that the switches are open and thus the message loop MS is open.
- the "signal loop" behaves like two stub lines (partial loops TS), each with half the number of detectors and half the line resistance compared to the closed signal loop MS.
- the normal isolating elements separate the faulty line section as usual. If the fault is such that the isolating element TG should not be disconnected, the isolating element TG is actuated in order to switch the partial loops TS to a signaling loop MS, one of the two partial loops TS generally being extended beyond the isolating element TG while the other partial loop TS is shortened accordingly. For this shortened line section or partial loop TS, normal operation is of course still possible without any restrictions. For the extended line section or partial loop, on the other hand, difficulties are to be expected, which can lead to generally permissible operating restrictions. Here it is first because of the larger number of detectors to be queried lead to a delay in the alarm output.
- the two switches Sa and Sb can be formed by the contacts of an electromechanical relay, which has the advantage that there are very low contact resistances in the switched-through state and very high insulation resistances in the disconnected state.
- a bistable version is preferably used for this in order to keep the energy requirement low in both operating states.
- semiconductors can also be used, VMOS transistors preferably being used.
- the control device ST is expediently formed by a microcomputer.
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Control Of Electric Motors In General (AREA)
- Emergency Alarm Devices (AREA)
- Cookers (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Betreiben von Gefahrenmeldern, die in einer schleifenförmigen Doppelleitung (Meldeschleife) in einer Gefahrenmeldeanlage angeordnet sind.The invention relates to a device for operating hazard detectors, which are arranged in a loop-shaped double line (detection loop) in a hazard detection system.
In Gefahrenmeldeanlagen, insbesondere bei Brandmeldesystemen, werden eine größere Anzahl von Meldern über eine schleifenförmige Doppelleitung mit der Zentrale der Anlage verbunden. Über diese Doppelleitung wird sowohl die Energieversorgung der Melder durchgeführt, als auch der Datenverkehr mit der Zentrale abgewickelt. Bei einer schleifenförmigen Ausbildung ist es möglich, im Falle einer Leitungsstörung (Unterbrechung oder Kurzschluß) die Leitung bzw. Schleife an der Störungsstelle aufzutrennen, z.B. mit einem Trennelement, und den abgetrennten Rest der Melder von der anderen Seite der Meldeschleife her mit Energie zu versorgen und abzufragen. Eine solche Vorrichtung ist z.B. aus der DE-A-3637681 bekannt. Bei Schleifenbetrieb kann die Gefahrenmeldeanlage pro Schleife wesentlich mehr Gefahrenmelder aufweisen. Das bedeutet, daß bei solchen Anlagen mit einer größeren Zahl von Meldern ein wesentlich höherer Summen-Energiebedarf erforderlich ist. Damit wird der zulässige Maximalwiderstand der Leitung gegenüber einem Sternnetz wesentlich verringert. Außerdem dauert die Abfrage der vielen Melder wesentlich länger, was zu Verzögerungen bei der Alarmierung führen kann.In hazard alarm systems, especially fire alarm systems, a large number of detectors are connected to the system center via a loop-shaped double line. Via this double line, the energy supply of the detectors is carried out, as well as the data traffic with the control center. With a loop-shaped design, it is possible to cut the line or loop at the point of the fault in the event of a line fault (interruption or short circuit), e.g. with a separating element, and to supply and query the separated rest of the detectors from the other side of the detection loop with energy. Such a device is e.g. known from DE-A-3637681. In loop operation, the hazard detection system can have significantly more hazard detectors per loop. This means that such systems with a larger number of detectors require a significantly higher total energy requirement. This significantly reduces the maximum permissible resistance of the line compared to a star network. In addition, it takes much longer to query the many detectors, which can lead to delays in alarming.
Deshalb wurde bereits vorgeschlagen, den zulässigen niedrigen Leitungswiderstand einerseits durch Verkürzen der zulässigen Leitungslänge und andererseits durch einen größeren Kupferquerschnitt der Doppelleitung einzuhalten. Die kürzere Leitungslänge beschränkt aber die Einsatzmöglichkeiten erheblich; eigentlich würden für mehr Melder eher längere Leitungen benötigt und nicht kürzere, und der größere Kupferquerschnitt bringt neben höheren Kosten für die Leitung und Melderfassungen auch eine wegen der größeren Steifigkeit aufwendigere Montage mit sich. Eine weitere bekannte Maßnahme ist die Reduzierung des Energiebedarfs der Melder. Das führt jedoch in der Regel zu ständig wirkenden Funktionseinbußen und/oder zu höheren Melderkosten. Die Verzögerungen bei der Alarmierung lassen sich allenfalls durch aufwendigere Übertragungseinrichtungen und/oder durch Reduzierung der zu übertragenden Daten mildern.It has therefore already been proposed to comply with the permissible low line resistance on the one hand by shortening the permissible line length and on the other hand by means of a larger copper cross section of the double line. However, the shorter cable length limits the possible uses significant; actually, longer lines would be needed for more detectors and not shorter ones, and the larger copper cross-section not only entails higher costs for the line and detector mounts, but also a more complex assembly because of the greater rigidity. Another known measure is to reduce the energy consumption of the detectors. However, this usually leads to permanent functional losses and / or higher detector costs. The delays in the alarming can at best be mitigated by more complex transmission facilities and / or by reducing the data to be transmitted.
Aufgabe der Erfindung ist es daher, die oben geschilderten Nachteile zu vermeiden und eine Anordnung zu schaffen, die gestattet, die Schleifenlänge wesentlich zu vergrößern, ohne den Kupferquerschnitt zu vergrößeren oder den Energiebedarf der Melder verringern zu müssen und ohne im Normalfall die Alarmierung zu verzögern.The object of the invention is therefore to avoid the disadvantages described above and to provide an arrangement which allows the loop length to be increased significantly without increasing the copper cross section or reducing the energy requirement of the detectors and without normally delaying the alarming.
Diese Aufgabe wird erfindungsgemäß mit einer Vorrichtung bei einer eingangs beschriebenen Gefahrenmeldeanlage mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst.This object is achieved according to the invention with a device in a hazard detection system described in the introduction with the characterizing features of
Mit der Anordnung eines Trenngliedes etwa in der Mitte der Meldeschleife wird erreicht, daß im störungsfreien Betrieb, d.h. im Normalfall, die Meldeschleife aufgetrennt wird, so daß die zwei dadurch entstehenden Teilschleifen als Stich- bzw. Sternleitung betrieben werden. Erst im Störungsfall wird mit dem Trennglied die Meldeschleife wieder geschlossen, so daß die Meldeschleife dann von beiden Seiten her betrieben werden kann, zumindest bis zu der Störungsstelle, die lokalisierbar ist und in bekannter Weise mittels sogenannter Trennelemente entsprechend abgetrennt wird.The arrangement of a separating element approximately in the middle of the signaling loop ensures that the signaling loop is broken in fault-free operation, ie in the normal case, so that the two partial loops thus created are operated as a stub or star line. Only in the event of a fault is the signaling loop closed again, so that the signaling loop can then be operated from both sides, at least up to the point of the fault, which can be located and is appropriately separated in a known manner by means of so-called separating elements.
Zweckmäßigerweise ist das Trennglied so ausgestaltet, daß es sowohl von der einen als auch von der anderen Seite der Meldeschleife her von der Zentrale aus angesteuert werden kann. Dazu ist in vorteilhafter Weise im Trennglied eine Steuereinrichtung vorgesehen, die in Abhängigkeit vom Betriebszustand der Gefahrenmeldeanlage zumindest einen Schalter ansteuert, der in einer der beiden Adern der Meldeschleife angeordnet ist.The isolating element is expediently designed in such a way that it can be controlled from the central station from one side as well as from the other side of the message loop. For this purpose, a control device is advantageously provided in the isolating element, which controls, depending on the operating state of the hazard alarm system, at least one switch which is arranged in one of the two wires of the alarm loop.
Insbesondere aus Symmetriegründen ist es vorteilhaft, in jeder Ader einen eigenen Schalter anzuordnen, der von der Steuereinrichtung des Trenngliedes angesteuert wird. Dabei können die Schalter ein Bestandteil eines elektromagnetischen Relais sein oder von einem Halbleiter, beispielsweise einem VMOS-Transistor, gebildet sein. Die Steuereinrichtung selbst wird zweckmäßigerweise von einem Mikrorechner gebildet.In particular for reasons of symmetry, it is advantageous to arrange a separate switch in each wire, which is controlled by the control device of the isolating element. The switches can be part of an electromagnetic relay or can be formed by a semiconductor, for example a VMOS transistor. The control device itself is expediently formed by a microcomputer.
Anhand der Zeichnung wird an einem Ausführungsbeispiel die Erfindung erläutert. Dabei zeigen
- Fig.1 eine Gefahrenmeldeanlage mit einer Zentrale, an die beispielsweise eine herkömmliche Meldeschleife angeordnet ist,
- Fig. 2 die Anordnung der erfindungsgemäßen Vorrichtung in der Meldeschleife und
- Fig. 3 ein Prinzipschaltbild des erfindungsgemäßen Trenngliedes.
- 1 shows a hazard alarm system with a control center, to which, for example, a conventional alarm loop is arranged,
- Fig. 2 shows the arrangement of the device according to the invention in the message loop and
- Fig. 3 is a schematic diagram of the isolating element according to the invention.
In Fig. 1 ist eine übliche Schleifenanordnung schematisch dargestellt. An die Zentrale Z sind an einer ersten Anschlußeinheit A1 die beiden Adern a,b der Meldehinleitung MLH angeschlossen, die als Schleife MS wieder zur Zentrale Z geführt sind und mit den beiden Adern a,b an der zweiten Anschlußeinheit A2 angeschlossen sind und die Melderückleitung MLR bilden.A conventional loop arrangement is shown schematically in FIG. 1. The two wires a, b of the message instruction MLH are connected to the central station Z at a first connection unit A1, which lead back to the central station Z as a loop MS and are connected to the second connection unit A2 with the two wires a, b and the signal return line MLR form.
Die an sich bekannten Trennelemente, die zur Abtrennung von gestörten Leitungsstücken dienen, sind hier nicht eigens dargestellt. Die Gesamtzahl der hier angeschlossenen Melder beträgt N, dabei sind auf der Meldehinleitung MLH die Melder M1 bis Mm angeschlossen, während auf der Melderückleitung MLR die Melder Mn bis M (m-1) angeschlossen sind. Im Normalfall der ungestörten Schleife MS wird diese komplett von einer Seite, also z.B. von der Anschlußeinheit A1 her betrieben, während intern über die Anschlußeinheit A2 das Schleifenende an der Zentrale Z nicht angeschaltet ist. Es ist üblich, zur Kontrolle der Funktionsfähigkeit in gewissen Zeitabständen die Übertragungsrichtung umzukehren und zumindest kurzfristig von der Anschalteinheit A2 her die Meldeschleife MS abzufragen. Dabei ist dann der Schleifenanfang über die Anschlußeinheit A1 von der Zentrale abgetrennt. Erst im Störungsfall erfolgt der Betrieb von beiden Seiten her, so daß sowohl die Anschlußeinheit A1 als auch A2 die Meldeleitung an der Zentrale angeschlossen hält.The separating elements known per se, which are used to separate disturbed line sections, are not specifically shown here. The total number of detectors connected here is N; detectors M1 to Mm are connected on the MLH message instructions, while detectors Mn to M (m-1) are connected on the MLR return line. In the normal case of the undisturbed loop MS, this is completely from one side, e.g. operated from the connection unit A1, while internally via the connection unit A2 the loop end at the center Z is not switched on. It is common to reverse the direction of transmission to check the functionality at certain intervals and to query the message loop MS at least briefly from the connection unit A2. The start of the loop is then disconnected from the control center via the connection unit A1. Operation only takes place from both sides in the event of a fault, so that both the connection unit A1 and A2 keep the signal line connected to the control center.
In Fig. 2 ist die erfindungsgemäße Vorrichtung gezeigt, die ein Trennglied TG aufweist, welches etwa in der Mitte der Meldeleitung bzw. der Meldeschleife MS angeordnet ist. Dies ist in Fig.2 schematisch dargestellt, dabei ähnelt im wesentlichen die Fig. 2 der Fig.1 mit Ausnahme des Trenngliedes TG, welches in der Schleife MS zwischen der Meldehinleitung MLH und der Melderückleitung MLR angeordnet ist und im aufgetrennten Zustand zwei Teilschleifen TS ermöglicht. Auf beiden Teilschleifen TS sind etwa gleich viel Melder M1,2,... angeordnet, so daß auch etwa gleich große Leitungswiderstände vorhanden sind.2 shows the device according to the invention, which has a separating element TG, which is arranged approximately in the middle of the message line or the message loop MS. This is shown schematically in FIG. 2, essentially similar to FIG. 2 of FIG. 1 with the exception of the isolating element TG, which is arranged in the loop MS between the message instruction MLH and the message return line MLR and, in the separated state, enables two sub-loops TS . The same number of detectors M1, 2,... Are arranged on both sub-loops TS, so that line resistances of approximately the same size are also present.
In Fig. 3 ist eine Prinzipdarstellung des erfindungsgemäßen Trenngliedes TG gezeigt. Es ist über die Klemmen a1 und b1 mit der Meldehinleitung MLH verbunden und über die Klemmen a2,b2 mit der Melderückleitung MLR verbunden. Die Steuereinrichtung ST erkennt über die Steuerungseingänge Ma1/Mb1 die Signale der Meldehinleitung MLH und über die Steuerungseingänge Ma2/Mb2 die Signale der Melderückleitung MLR und betätigt in Abhängigkeit vom Betriebszustand der beiden Teilschleifen TS über die Steuerungseinrichtung ST die Schalter Sa und Sb, die in den Adern a,b der Meldeschleife MS angeordnet sind. Im Normalfall, d.h. im störungsfreien Betrieb, ist das Trennglied TG so angesteuert, daß die Schalter geöffnet sind und somit die Meldeschleife MS geöffnet ist. Auf diese Weise verhält sich die "Meldeschleife" wie zwei Stichleitungen (Teilschleifen TS) mit jeweils der halben Melderzahl und dem halben Leitungswiderstand gegenüber der geschlossenen Meldeschleife MS.3 shows a basic illustration of the separating element TG according to the invention. It is connected to the MLH message instructions via terminals a1 and b1 and to the MLR signal return line via terminals a2, b2. The Control device ST recognizes the signals of the message instruction MLH via the control inputs Ma1 / Mb1 and the signals of the signal return line MLR via the control inputs Ma2 / Mb2 and actuates the switches Sa and Sb in the wires depending on the operating state of the two partial loops TS via the control device ST a, b of the message loop MS are arranged. In the normal case, ie in trouble-free operation, the isolating element TG is activated in such a way that the switches are open and thus the message loop MS is open. In this way, the "signal loop" behaves like two stub lines (partial loops TS), each with half the number of detectors and half the line resistance compared to the closed signal loop MS.
Diese Teilschleifen können also wie Stichleitungen dimensioniert werden. Das bedeutet, für die jeweilige Stichleitung sind wesentlich größere Leitungslängen und somit Leitungswiderstände möglich und daher auch eine höhere Melderzahl. Da alle vorhandenen Komponenten ständig im Betrieb und damit auch ständig überwacht sind, entfallen sonstige zusätzliche Umschalt- und Kontrollprozeduren.These partial loops can therefore be dimensioned like stub lines. This means that much longer line lengths and thus line resistances are possible for the respective stub line and therefore also a higher number of detectors. Since all existing components are constantly in operation and therefore also constantly monitored, there are no additional switching and control procedures.
Im Störungsfall trennen wie üblich die normalen Trennelemente das gestörte Leitungsstück ab. Falls die Störung so liegt, daß das Trennglied TG nicht aufgetrennt sein soll, wird das Trennglied TG angesteuert, um die Teilschleifen TS zu einer Meldeschleife MS zu schalten, wobei sich in der Regel eine der beiden Teilschleifen TS über das Trennglied TG hinaus verlängert, während sich die andere Teilschleife TS entsprechend verkürzt. Für dieses verkürzte Leitungsstück bzw. Teilschleife TS ist natürlich der normale Betrieb ohne jede Einschränkung weiterhin möglich. Für das verlängerte Leitungsstück bzw. Teilschleife ist dagegen mit Erschwernissen zu rechnen, die zu im allgemeinen zulässigen Betriebseinschränkungen führen können. Hier wird es zunächst wegen der größeren Zahl der abzufragenden Melder zu einer Verzögerung der Alarmgabe kommen. Es ist vorteilhaft, in diesem Fall die Häufigkeit der Brandkenngrößenmessung und der Melderabfrage zu reduzieren, um den Energiebedarf auf der längeren Teilschleife zu senken. Diese Einschränkungen sind jedoch ohne weiteres zu vertreten und von den allgemeinen Bestimmungen her zulässig, da diese Einschränkungen ja nur im Störungsfall, also nicht während des normalen Betriebs, auftreten.In the event of a fault, the normal isolating elements separate the faulty line section as usual. If the fault is such that the isolating element TG should not be disconnected, the isolating element TG is actuated in order to switch the partial loops TS to a signaling loop MS, one of the two partial loops TS generally being extended beyond the isolating element TG while the other partial loop TS is shortened accordingly. For this shortened line section or partial loop TS, normal operation is of course still possible without any restrictions. For the extended line section or partial loop, on the other hand, difficulties are to be expected, which can lead to generally permissible operating restrictions. Here it is first because of the larger number of detectors to be queried lead to a delay in the alarm output. In this case it is advantageous to reduce the frequency of the fire parameter measurement and the detector query in order to reduce the energy requirement on the longer partial loop. However, these restrictions are easy to accept and the general provisions allow, since these restrictions only occur in the event of a fault, i.e. not during normal operation.
In einer zweckmäßigen Ausgestaltung der Erfindung können die beiden Schalter Sa und Sb von den Kontakten eines elektromechanischen Relais gebildet sein, was den Vorteil hat, daß sehr niedrige Kontaktwiderstände im durchgeschalteten und sehr hohe Isolationswiderstände im aufgetrennten Zustand gegeben sind. Vorzugsweise wird man hierfür eine bistabile Ausführung verwenden, um den Energiebedarf in beiden Betriebszuständen klein zu halten. Alternativ zum Relais können auch Halbleiter verwendet werden, wobei vorzugsweise VMOS-Transistoren eingesetzt werden. Die Steuereinrichtung ST ist zweckmäßigerweise von einem Mikrorechner gebildet.In an expedient embodiment of the invention, the two switches Sa and Sb can be formed by the contacts of an electromechanical relay, which has the advantage that there are very low contact resistances in the switched-through state and very high insulation resistances in the disconnected state. A bistable version is preferably used for this in order to keep the energy requirement low in both operating states. As an alternative to the relay, semiconductors can also be used, VMOS transistors preferably being used. The control device ST is expediently formed by a microcomputer.
Claims (8)
- Device for operating hazard detectors (M1...Mn) which are arranged in a loop-like double line (detector loop MS) in a hazard detector installation, characterized in that, approximately at the centre of the detector loop (MS), there is arranged an isolating element (TG) which, in undisturbed operation (normal case), keeps the detector loop (MS) isolated, each partial loop (TS) being operated as a spur line or star line, and in that, in the case of a disturbance (short circuit, line interruption), the isolating element (TG) closes the detector loop (MS), the loop (MS) being operated from both sides (A1/A2).
- Device according to Claim 1, characterized in that the isolating element (TG) can be driven from one (Ma1/Mb1) or from the other (Ma2/Mb2) side from the central unit (Z) of the hazard detector installation.
- Device according to Claim 1 or 2, characterized in that the isolating element (TG) has a control device (ST) which, as a function of the operating state (normal/disturbed case), drives a switch (Sa/Sb) which is arranged in one of the two wires (a/b) of the detector loop (MS).
- Device according to Claim 3, characterized in that a switch (Sa, Sb) is arranged in each wire (a, b).
- Device according to Claim 3 or 4, characterized in that the switches (Sa, Sb) are constituent parts of an electromagnetic relay.
- Device according to Claim 3 or 4, characterized in that the switches (Sa, Sb) are formed by a VMOS transistor.
- Device according to Claim 3, characterized in that the control device (ST) is formed by a micro-computer.
- Device according to Claim 1 or one of Claims 2 to 7, characterized in that, in the case of a disturbance, at least the extended partial loop is interrogated less often than in the normal case.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91115957A EP0532787B1 (en) | 1991-09-19 | 1991-09-19 | Device for operating hazard detectors |
| ES91115957T ES2080208T3 (en) | 1991-09-19 | 1991-09-19 | DEVICE FOR THE OPERATION OF DANGER ALARMS. |
| DE59107087T DE59107087D1 (en) | 1991-09-19 | 1991-09-19 | Device for operating hazard detectors |
| AT91115957T ATE131648T1 (en) | 1991-09-19 | 1991-09-19 | DEVICE FOR OPERATING HAZARD DETECTORS |
| DK91115957.2T DK0532787T3 (en) | 1991-09-19 | 1991-09-19 | Device for operation of hazard alarms |
| GR950403642T GR3018512T3 (en) | 1991-09-19 | 1995-12-21 | Device for operating hazard detectors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP91115957A EP0532787B1 (en) | 1991-09-19 | 1991-09-19 | Device for operating hazard detectors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0532787A1 EP0532787A1 (en) | 1993-03-24 |
| EP0532787B1 true EP0532787B1 (en) | 1995-12-13 |
Family
ID=8207171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91115957A Expired - Lifetime EP0532787B1 (en) | 1991-09-19 | 1991-09-19 | Device for operating hazard detectors |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0532787B1 (en) |
| AT (1) | ATE131648T1 (en) |
| DE (1) | DE59107087D1 (en) |
| DK (1) | DK0532787T3 (en) |
| ES (1) | ES2080208T3 (en) |
| GR (1) | GR3018512T3 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4326487C2 (en) * | 1992-09-16 | 1995-02-09 | Konrad Michael Dipl Ing Weigl | Adaptive filter |
| DE4322841C2 (en) * | 1993-07-08 | 1996-02-15 | Zettler Gmbh | Hazard detection system |
| DE4426466C2 (en) * | 1994-07-26 | 2002-06-20 | Siemens Ag | Arrangement and method for operating hazard detectors |
| DE19800049A1 (en) * | 1998-01-02 | 1999-07-08 | Philips Patentverwaltung | Arrangement for transmitting data and / or energy with a separation unit |
| DE10051329C2 (en) * | 2000-10-10 | 2003-12-11 | Job Lizenz Gmbh & Co Kg | Alarm system |
| DE102005037047B3 (en) * | 2005-08-05 | 2006-12-28 | Novar Gmbh | Building control and hazard alert system, has bus substation circuit lying between parallely connected direct current connections of bridges and measuring voltage ratios and their polarity at alternating voltage inputs of bridges |
| EP2833333B1 (en) * | 2013-07-31 | 2018-12-19 | Honeywell Life Safety Austria GmbH | Bus system and method for operating a bus system |
| EP3811348A1 (en) * | 2018-06-21 | 2021-04-28 | Autronica Fire & Security AS | System and method for startup of a detector loop |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8431883D0 (en) * | 1984-12-18 | 1985-01-30 | Gent Ltd | Transmission system |
| DE3637681A1 (en) * | 1986-11-05 | 1988-05-19 | Siemens Ag | Alarm signalling system according to the pulse signalling system |
-
1991
- 1991-09-19 AT AT91115957T patent/ATE131648T1/en not_active IP Right Cessation
- 1991-09-19 DE DE59107087T patent/DE59107087D1/en not_active Expired - Fee Related
- 1991-09-19 EP EP91115957A patent/EP0532787B1/en not_active Expired - Lifetime
- 1991-09-19 DK DK91115957.2T patent/DK0532787T3/en active
- 1991-09-19 ES ES91115957T patent/ES2080208T3/en not_active Expired - Lifetime
-
1995
- 1995-12-21 GR GR950403642T patent/GR3018512T3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK0532787T3 (en) | 1996-03-25 |
| ATE131648T1 (en) | 1995-12-15 |
| ES2080208T3 (en) | 1996-02-01 |
| GR3018512T3 (en) | 1996-03-31 |
| EP0532787A1 (en) | 1993-03-24 |
| DE59107087D1 (en) | 1996-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3271932B1 (en) | Safety switching device for fail-safe disconnecting of an electrical load | |
| EP2586051B1 (en) | Safety circuit arrangement for the fail-safe connection or disconnection of a hazardous installation | |
| EP2649496B1 (en) | Safety switching device for the failsafe shutdown of an electrical consumer | |
| EP2980659B1 (en) | Device and method for monitoring and switching a load circuit | |
| DE10011211A1 (en) | Secure switching device for on-off switching of electrical load has at least 2 switching elements each providing switch output for controlling load | |
| WO1992018410A1 (en) | Device for monitoring a control unit | |
| EP0052759B1 (en) | Device by an electronic signal box for the power supply and telecontrol of switch drives | |
| EP0532787B1 (en) | Device for operating hazard detectors | |
| DE10256631B4 (en) | Verfarhen for addressing the participants of a bus system | |
| EP0149727B1 (en) | Supervisory circuit for the safety contacts of elevators | |
| EP2656365B1 (en) | Control circuit for an electromagnetic relay | |
| EP0809361B1 (en) | Electronic switching device and circuit arrangement for monitoring a technical installation | |
| DE3637681A1 (en) | Alarm signalling system according to the pulse signalling system | |
| DE4426466C2 (en) | Arrangement and method for operating hazard detectors | |
| DE10148155A1 (en) | Arrangement for monitoring motor starters | |
| DE19620065A1 (en) | Electronic switching device for cable=way or chair-lift installation | |
| EP0503122B1 (en) | Arrangement for commuting primary leads during faults | |
| DE2614748A1 (en) | Circuit to monitor function of indirectly acting switch - having reversing switch assigned to each switch position formed from 2 diodes in antiparallel | |
| DE102016121255A1 (en) | Control module for an electromechanical switching unit, relay module and control device | |
| EP0521180B1 (en) | Danger signalling devices connected in a loop | |
| DE102019003206B3 (en) | Safety order | |
| DE2002353B2 (en) | Failure detection for single channel binary control - uses logic system connecting voltage divider and trigger circuit with alarm | |
| WO2015180806A1 (en) | Electronic relay | |
| EP4336537A1 (en) | Relay device and safety switching device having at least one relay device | |
| DE19606896A1 (en) | Light signals setting and monitoring circuit, esp. for railway operations |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
| RBV | Designated contracting states (corrected) |
Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL |
|
| 17P | Request for examination filed |
Effective date: 19930915 |
|
| 17Q | First examination report despatched |
Effective date: 19950530 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL |
|
| REF | Corresponds to: |
Ref document number: 131648 Country of ref document: AT Date of ref document: 19951215 Kind code of ref document: T |
|
| REF | Corresponds to: |
Ref document number: 59107087 Country of ref document: DE Date of ref document: 19960125 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2080208 Country of ref document: ES Kind code of ref document: T3 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: SIEMENS-ALBIS AKTIENGESELLSCHAFT |
|
| REG | Reference to a national code |
Ref country code: GR Ref legal event code: FG4A Free format text: 3018512 |
|
| ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960217 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| ET | Fr: translation filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GR Payment date: 19970829 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 19970916 Year of fee payment: 7 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19970924 Year of fee payment: 7 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980919 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980919 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980930 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20001120 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20001214 Year of fee payment: 10 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20010816 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20010912 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20010914 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20010917 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20010919 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20010928 Year of fee payment: 11 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010930 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020501 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020919 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020919 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020920 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020930 |
|
| BERE | Be: lapsed |
Owner name: *SIEMENS A.G. Effective date: 20020930 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030401 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20020919 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030603 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20031011 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050919 |