EP0462442A1 - Method of preventing arming of an intruder alarm device - Google Patents
Method of preventing arming of an intruder alarm device Download PDFInfo
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- EP0462442A1 EP0462442A1 EP91109050A EP91109050A EP0462442A1 EP 0462442 A1 EP0462442 A1 EP 0462442A1 EP 91109050 A EP91109050 A EP 91109050A EP 91109050 A EP91109050 A EP 91109050A EP 0462442 A1 EP0462442 A1 EP 0462442A1
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- 238000000034 method Methods 0.000 title claims description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 51
- 238000001514 detection method Methods 0.000 description 6
- 230000011664 signaling Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/008—Alarm setting and unsetting, i.e. arming or disarming of the security system
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/06—Monitoring of the line circuits, e.g. signalling of line faults
Definitions
- the invention relates to a method for preventing the arming of an intrusion detection system with a control center and with at least one reporting primary line, which is formed by a serial signal bus, to which various elements and a block lock element are connected at the end of a respective monitoring area.
- intrusion detection systems In intrusion detection systems, it is common practice to mark the end of a surveillance area, i.e. the last door to be locked is to be fitted with an electromechanical block lock. The intruder alarm system is armed with the block lock and the last door is mechanically locked at the same time. However, arming should only be possible if the entire system is ready to arm, i.e. no detector or element of the intrusion detection system may issue an intrusion report, e.g. a window contact that issues a message if the window is still open, i.e. not closed.
- an intrusion report e.g. a window contact that issues a message if the window is still open, i.e. not closed.
- the object of the invention is to provide a method in a burglar alarm system described at the outset which avoids waiting times when arming, i.e. the response times are reduced without reducing the number of elements per primary line or increasing the data transmission rates.
- the method according to the invention is characterized in that all the elements connected to a primary signal line can listen to signaling signals almost simultaneously and emit their own signaling signals, and that the signal used for line monitoring is specifically changed by the element that wants to prevent arming .
- the block lock in question immediately recognizes a non-arming enable for its area and blocks the arming.
- the control center also recognizes a permissible change from the changed monitoring signal and does not interpret this as a fault.
- the control center In contrast to central processing, in which the status of the individual detectors is queried from the control center based on a request for arming, and when a detector is detected that does not allow arming, the control center sends a signal to the block lock to enable arming To block.
- This cumbersome data exchange between the block lock and the relevant detectors or elements and the control center is no longer necessary in the method according to the invention.
- the method according to the invention has the advantage of a significantly lower data transfer rate, that is, if an element signals that it is not ready to arm, the associated block lock recognizes immediately, that is, without data exchange to and from the control center again to the block lock, that the Arming is not possible.
- At least one very specific bit of the bit sequence of the monitoring signal can expediently be changed. It is advantageous if a plurality of monitoring areas are connected to a primary signal line to specifically change a different part of the monitoring signal for each monitoring area, so that the associated block lock can infer its area from the changed monitoring signal.
- the control center recognizes from the monitoring signal that has been changed several times that arming is prevented, for example, for two different areas simultaneously.
- the method according to the invention can advantageously be used for different network structures, i.e. regardless of the network design of the intrusion detection system.
- the free end is usually provided with a terminating element, which initiates regularly from the control center or also generates an idle telegram with a predetermined bit sequence as a monitoring signal.
- the control center regularly generates a standby telegram as a monitoring signal, which is passed on unchanged by each element in the normal state of the intrusion detection system until it reaches the control center again.
- the element in question changes the idle telegram according to the invention, which is then passed on from element to element to the control center as a modified idle telegram.
- the last element of a monitoring area is designed in a known manner as a block lock. This block lock detects the changed idle telegram and interprets this as a signal to prevent arming and blocks its locking mechanism.
- the element which wishes to prevent arming can destroy the monitoring signal (idle telegram), from which it is recognized that arming must be prevented.
- An intrusion alarm system EMA is shown schematically in FIG.
- a single primary signal line MPL is connected to the central station Z and is terminated at its free end with the terminating element ELA.
- the signaling primary line MPL is designed as a serial signal bus SB, to which a large number of elements EL1 to EL (n + 1) are connected, all of which can simultaneously listen to the data traffic of the signal bus SB and can also emit a signal almost simultaneously.
- the signaling primary line MPL is divided into two monitoring areas UEB1 and UEB2. At the end of each surveillance area there is a block lock BS1 and BS2 on the last door.
- the monitoring area UEB1 is provided with the last element EL4 as a block lock BS1, the monitoring area UEB2 as a last element EL (n + 1) as a block lock BS2.
- the terminating element ELA regularly emits a monitoring signal UES as an idle telegram in the form of a predetermined bit sequence. This monitoring signal UES is heard by all elements and also by the central office Z. If the monitoring signal UES remains unchanged, the control center Z recognizes no malfunction, no alarm and no manipulation. It is now assumed that the element EL2 wants to prevent arming, which is indicated by SV, because, for example, the element EL2 is a window contact and the associated window is open.
- the element EL2 specifically changes the monitoring signal UESV, for example by changing one or two specific bits of the bit sequence.
- the changed monitoring signal UES ' is heard by all elements and also the control center. Since the block lock BS1 (element EL4) hears the changed monitoring signal and interprets it as a signal that arming is to be prevented, a blocking device is extended in block lock BS1, for example, so that the last door can neither be locked nor armed.
- the control center Z which also receives the changed monitoring signal UESV, recognizes on the basis of the specific change in this signal that there is no interference here, but that an element of the signaling primary line MPL wants to prevent arming SV.
- it is expedient in any case if arming is to be prevented, to change the monitoring signal for a monitoring area in a very specific manner and for a further monitoring area in a different specific manner, so that only the associated block lock on the Desire to prevent arming can react and the control center can also recognize the area from which the request to prevent arming comes. This is made clear in a further exemplary embodiment.
- FIG. 2 schematically shows an intrusion alarm system EMA with a control center Z, to which an alarm primary line MPL in the form of a token ring is connected.
- the token ring has six elements EL1 to EL6, a first monitoring area UEB1 being formed by the first three elements EL1 to EL3 with EL3 as a block lock BS1.
- a second monitoring area UEB2 here also has three elements, with the block lock BS2 forming the end of an area, which is the last element EL6 of the token ring.
- the monitoring signal that comes from the central station Z as a monitoring token TUE changed from element EL1 to a token TUV, which is passed on unchanged by the second element EL2.
- the third element EL3 or the block lock BS1 recognizes from the changed monitoring token TUV that arming should be prevented so that the block lock BS1 is blocked.
- the block lock BS1 changes the token to be passed on to a new surveillance token TUN1, which is passed on as a surveillance signal by each subsequent element and reaches the central station Z unchanged, unless another element wants to prevent arming in the second surveillance area UEB2. This is indicated in the example of the element EL5 with SV7.
- the element EL5 now changes the new monitoring token TUN1 to a token TUNV, which is intended to prevent arming SV for the monitoring area UEB2.
- the second block lock BS2 recognizes from the again changed token TUNV that the arming is to be prevented for the associated area and consequently blocks the block lock.
- the second block lock can also change the monitoring token in such a way that this newly changed token TUN2 has, for example, a further changed bit to prevent arming in the monitoring area UEB2.
- the token TUN2 now received by the central station Z is recognized as a deliberately changed monitoring token, with the information that the arming for the first and the second monitoring area UEB1 and UEB2 is to be prevented.
- the line-monitoring signal can be changed by the individual elements or stations in such a way that each listening block lock can conclude that its area is ready for arming, or that arming is prevented when the specified monitoring signal is specifically changed. If a primary signal line has several areas, different parts of the monitoring signal are specifically changed.
- the method according to the invention can be used in the case of open primary signal lines in various signal transmission methods, for example in a polling method or a time slot method or also in a free-running system with and without a collision.
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- Burglar Alarm Systems (AREA)
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Abstract
Description
Die Erfindung bezieht sich auf ein Verfahren zum Verhindern des Scharfschaltens einer Einbruchmeldeanlage mit einer Zentrale und mit zumindest einer Meldeprimärleitung, die von einem seriellen Signal-Bus gebildet ist, an dem verschiedene Elemente und am Abschluß eines jeweiligen Überwachungsbereichs ein Blockschloß-Element angeschlossen sind.The invention relates to a method for preventing the arming of an intrusion detection system with a control center and with at least one reporting primary line, which is formed by a serial signal bus, to which various elements and a block lock element are connected at the end of a respective monitoring area.
In Einbruchmeldeanlagen ist es allgemein üblich, das Ende eines Überwachungsbereichs, d.h. die letzte Türe, die zu verschließen ist, mit einem elektromechanischen Blockschloß zu versehen. Mit dem Blockschloß wird die Einbruchmeldeanlage scharfgeschaltet und gleichzeitig die letzte Türe mechanisch verriegelt. Ein Scharfschalten darf jedoch nur möglich sein, wenn die gesamte Anlage scharfschaltbereit ist, d.h. es darf kein Melder bzw. Element der Einbruchmeldeanlage eine Einbruchmeldung absetzen, wie z.B. ein Fensterkontakt, der eine Meldung abgibt, wenn das Fenster noch offen, also nicht geschlossen ist.In intrusion detection systems, it is common practice to mark the end of a surveillance area, i.e. the last door to be locked is to be fitted with an electromechanical block lock. The intruder alarm system is armed with the block lock and the last door is mechanically locked at the same time. However, arming should only be possible if the entire system is ready to arm, i.e. no detector or element of the intrusion detection system may issue an intrusion report, e.g. a window contact that issues a message if the window is still open, i.e. not closed.
Die heute üblichen Gleichstrommeldelinien werden zusehens von seriellen Bussystemen verdrängt. Derartige Bussysteme erlauben nämlich die Detektionssicherheit zu steigern, den Komfort der Anlage zu erhöhen und den täglichen Umgang mit dem System zu verbessern. Das bedeutet aber im allgemeinen, daß in der Zentrale ein höherer Anschaltungsaufwand erforderlich ist. Deshalb ist man bestrebt, an einer Primärleitung mehr Elemente, d.h. Melder, Blockschlösser, Bedienfelder, als bisher anzuschließen. Dadurch erhöht sich der Datenverkehr, d.h. die Verkehrsbelastung der Primärleitung. Dadurch erhöht sich die Reaktionszeit der Einbruchmeldeanlage bei gleicher Übertragungsrate. Dies merkt der Betreiber der Anlage täglich beim Scharfschalten durch evtl. längere Wartezeiten.The DC lines that are common today are increasingly being replaced by serial bus systems. Such bus systems allow the detection reliability to be increased, the comfort of the system to be increased and the daily handling of the system to be improved. However, this generally means that a higher connection effort is required in the control center. For this reason, efforts are being made to connect more elements, ie detectors, block locks, control panels, than previously to a primary line. This increases the data traffic, ie the traffic load on the primary line. This increases the response time of the intruder alarm system at the same transmission rate. The system operator notices this every day when arming due to possible longer waiting times.
Aufgabe der Erfindung ist es, bei einer eingangs geschilderten Einbruchmeldeanlage ein Verfahren anzugeben, welches beim Scharfschalten Wartezeiten vermeidet, d.h. die Reaktionszeiten erniedrigt, ohne dabei die Anzahl der Elemente je Primärleitung zu verringern oder die Datenübertragungsraten zu erhöhen.The object of the invention is to provide a method in a burglar alarm system described at the outset which avoids waiting times when arming, i.e. the response times are reduced without reducing the number of elements per primary line or increasing the data transmission rates.
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved with the features of
Bei einer oben beschriebenen Einbruchmeldeanlage zeichnet sich das erfindungsgemäße Verfahren dadurch aus, daß sämtliche an einer Meldeprimärleitung angeschlossenen Elemente nahezu gleichzeitig Meldesignale mithören und eigene Meldesignale abgeben können, und daß das zur Leitungsüberwachung verwendete Signal ganz gezielt von demjenigen Element verändert wird, das ein Scharfschalten verhindern will. Im unscharf geschalteten Zustand der Anlage erkennt hieraus das betreffende Blockschloß unmittelbar eine nicht Scharfschaltefreigabe für seinen Bereich und blockiert das Scharfschalten. Ebenso erkennt die Zentrale aus dem geänderten Überwachungssignal eine zulässige Änderung und interpretiert dies nicht als Störung.In a burglar alarm system described above, the method according to the invention is characterized in that all the elements connected to a primary signal line can listen to signaling signals almost simultaneously and emit their own signaling signals, and that the signal used for line monitoring is specifically changed by the element that wants to prevent arming . In the disarmed state of the system, the block lock in question immediately recognizes a non-arming enable for its area and blocks the arming. The control center also recognizes a permissible change from the changed monitoring signal and does not interpret this as a fault.
Im Gegensatz zu einer zentralen Verarbeitung, bei der aufgrund eines Scharfschaltewunsches von der Zentrale aus die einzelnen Melder auf ihren Zustand hin abgefragt werden und beim Erkennen eines Melders, der Scharfschalten nicht erlaubt, gibt die Zentrale ein Signal an das Blockschloß ab, um ein Scharfschalten zu blockieren. Dieser umständliche Datenaustausch zwischen dem Blockschloß und den betreffenden Meldern bzw. Elementen und der Zentrale ist bei dem erfindungsgemäßen Verfahren nicht mehr erforderlich. Das erfindungsgemäße Verfahren hat den Vorteil einer wesentlich kleineren Datenübertragungsrate, d.h. wenn ein Element signalisiert, daß es nicht scharfschaltbereit ist, erkennt das zugehörige Blockschloß unmittelbar, d.h. ohne daß ein Datenaustausch zur Zentrale hin und von dieser wieder zum Blockschloß hin zu erfolgen hat, daß das Scharfschalten nicht möglich ist.In contrast to central processing, in which the status of the individual detectors is queried from the control center based on a request for arming, and when a detector is detected that does not allow arming, the control center sends a signal to the block lock to enable arming To block. This cumbersome data exchange between the block lock and the relevant detectors or elements and the control center is no longer necessary in the method according to the invention. The method according to the invention has the advantage of a significantly lower data transfer rate, that is, if an element signals that it is not ready to arm, the associated block lock recognizes immediately, that is, without data exchange to and from the control center again to the block lock, that the Arming is not possible.
Bei dem erfindungsgemäßen Verfahren kann zweckmäßigerweise mindestens ein ganz bestimmtes Bit der Bitfolge des Überwachungssignals geändert werden. Dabei ist es vorteilhaft, wenn mehrere Überwachungsbereiche an einer Meldeprimärleitung angeschlossen sind, für jeden Überwachungsbereich einen anderen Teil des Überwachungssignals gezielt zu ändern, so daß das zugehörige Blockschloß aus dem veränderten Überwachungssignal auf seinen Bereich schließen kann. Die Zentrale erkennt aus dem mehrfach geänderten Überwachungssignal, daß das Scharf schalten beispielsweise für zwei verschiedene Bereiche gleichzeitig verhindert wird.In the method according to the invention, at least one very specific bit of the bit sequence of the monitoring signal can expediently be changed. It is advantageous if a plurality of monitoring areas are connected to a primary signal line to specifically change a different part of the monitoring signal for each monitoring area, so that the associated block lock can infer its area from the changed monitoring signal. The control center recognizes from the monitoring signal that has been changed several times that arming is prevented, for example, for two different areas simultaneously.
Das erfindungsgemäße Verfahren ist in vorteilhafter Weise für verschiedene Netzstrukturen anwendbar, d.h. unabhängig von der Netzgestaltung der Einbruchmeldeanlage. Bei einer offenen Meldeprimärleitung (Partyline) ist das freie Ende üblicherweise mit einem Abschlußelement versehen, welches regelmäßig von der Zentrale aus veranlaßt oder auch von sich selbst aus als Überwachungssignal ein Ruhetelegramm mit einer vorgegebenen Bitfolge erzeugt.The method according to the invention can advantageously be used for different network structures, i.e. regardless of the network design of the intrusion detection system. In the case of an open primary signal line (party line), the free end is usually provided with a terminating element, which initiates regularly from the control center or also generates an idle telegram with a predetermined bit sequence as a monitoring signal.
Ist die Meldeprimärleitung als Schleife ausgebildet, z.B. bei einem Token-Ring-System, so erzeugt die Zentrale regelmäßig als Überwachungssignal ein Ruhetelegramm, welches im Normalzustand der Einbruchmeldeanlage von jedem Element unverändert weitergegeben wird, bis es wieder zur Zentrale gelangt. Soll jedoch von einem Element der Meldeprimärleitung das Scharfschalten verhindert werden, so verändert erfindungsgemäß das betreffende Element das Ruhetelegramm, welches dann als verändertes Ruhetelegramm von Element zu Element bis zur Zentrale weitergegeben wird. Das letzte Element eines Überwachungsbereichs ist in bekannter Weise als Blockschloß ausgebildet. Dieses Blockschloß erkennt das geänderte Ruhetelegramm und interpretiert dies als Signal zum Verhindern des Scharfschaltens und blockiert seinen Schließmechanismus.If the primary reporting line is in the form of a loop, for example in a token-ring system, the control center regularly generates a standby telegram as a monitoring signal, which is passed on unchanged by each element in the normal state of the intrusion detection system until it reaches the control center again. However, if arming is to be prevented by an element of the primary signal line, the element in question changes the idle telegram according to the invention, which is then passed on from element to element to the control center as a modified idle telegram. The last element of a monitoring area is designed in a known manner as a block lock. This block lock detects the changed idle telegram and interprets this as a signal to prevent arming and blocks its locking mechanism.
In einer anderen Ausgestaltung der Erfindung kann dasjenige Element, welches das Scharfschalten verhindern will, das Überwachungssignal (Ruhetelegramm) zerstören, wobei hieraus erkannt wird, daß das Scharfschalten zu verhindern ist.In another embodiment of the invention, the element which wishes to prevent arming can destroy the monitoring signal (idle telegram), from which it is recognized that arming must be prevented.
An zwei Ausführungsbeispielen soll im folgenden die Erfindung anhand der Zeichnung erläutert werden. Dabei zeigen
- Fig. 1
- eine Einbruchmeldeanlage mit einer offenen Meldeprimärleitung und
- Fig. 2
- eine geschlossene Meldeprimärleitung (Schleife).
- Fig. 1
- an intruder alarm system with an open primary alarm line and
- Fig. 2
- a closed primary signal line (loop).
In Fig. 1 ist schematisch eine Einbruchmeldeanlage EMA gezeigt, die eine Zentrale Z aufweist. An der Zentrale Z ist beispielhaft eine einzige Meldeprimärleitung MPL angeschlossen, die an ihrem freien Ende mit dem Abschlußelement ELA abgeschlossen ist. Die Meldeprimärleitung MPL ist als serieller Signalbus SB ausgebildet, an dem eine Vielzahl von Elementen EL1 bis EL (n+1) angeschlossen sind, die alle gleichzeitig den Datenverkehr des Signalbus SB mithören können und auch nahezu gleichzeitig ein Signal abgeben können. Die Meldeprimärleitung MPL ist in zwei Überwachungsbereiche UEB1 und UEB2 aufgeteilt. Jeder Überwachungsbereich ist an seinem Abschluß mit einem Blockschloß BS1 und BS2 an der jeweiligen letzten Tür versehen. In diesem Ausführungsbeispiel ist der Überwachungsbereich UEB1 mit dem letzten Element EL4 als Blockschloß BS1 versehen, der Überwachungsbereich UEB2 als letztes Element EL (n+1) als Blockschloß BS2. Das Abschlußelement ELA gibt regelmäßig ein Überwachungssignal UES als Ruhetelegramm in Form einer vorgegebenen Bitfolge ab. Dieses Überwachungssignal UES wird von allen Elementen und auch von der Zentrale Z gehört. Bleibt das Überwachungssignal UES unverändert, so erkennt die Zentrale Z keine Störung, keinen Alarm und keine Manipulation. Es sei nun angenommen, daß das Element EL2 das Scharfschalten, was mit SV angedeutet ist, verhindern möchte, weil beispielsweise das Element EL2 ein Fensterkontakt ist und das zugehörige Fenster geöffnet ist. In diesem Fall verändert das Element EL2 gezielt das Überwachungssignal UESV, indem es beispielsweise einen oder zwei bestimmte Bits der Bitfolge verändert. Das geänderte Überwachungssignal UES' wird von allen Elementen und auch der Zentrale gehört. Da das Blockschloß BS1 (Element EL4) das veränderte Überwachungssignal hört und als Signal interpretiert, daß ein Scharfschalten verhindert werden soll, wird im Blockschloß BS1 beispielsweise eine Sperrvorrichtung ausgefahren, so daß die letzte Tür weder verriegelt noch ein Scharfschalten ermöglicht werden kann.An intrusion alarm system EMA is shown schematically in FIG. A single primary signal line MPL is connected to the central station Z and is terminated at its free end with the terminating element ELA. The signaling primary line MPL is designed as a serial signal bus SB, to which a large number of elements EL1 to EL (n + 1) are connected, all of which can simultaneously listen to the data traffic of the signal bus SB and can also emit a signal almost simultaneously. The signaling primary line MPL is divided into two monitoring areas UEB1 and UEB2. At the end of each surveillance area there is a block lock BS1 and BS2 on the last door. In this exemplary embodiment, the monitoring area UEB1 is provided with the last element EL4 as a block lock BS1, the monitoring area UEB2 as a last element EL (n + 1) as a block lock BS2. The terminating element ELA regularly emits a monitoring signal UES as an idle telegram in the form of a predetermined bit sequence. This monitoring signal UES is heard by all elements and also by the central office Z. If the monitoring signal UES remains unchanged, the control center Z recognizes no malfunction, no alarm and no manipulation. It is now assumed that the element EL2 wants to prevent arming, which is indicated by SV, because, for example, the element EL2 is a window contact and the associated window is open. In this case, the element EL2 specifically changes the monitoring signal UESV, for example by changing one or two specific bits of the bit sequence. The changed monitoring signal UES 'is heard by all elements and also the control center. Since the block lock BS1 (element EL4) hears the changed monitoring signal and interprets it as a signal that arming is to be prevented, a blocking device is extended in block lock BS1, for example, so that the last door can neither be locked nor armed.
Die Zentrale Z, die das geänderte Überwachungssignal UESV ebenfalls empfängt, erkennt aufgrund der gezielten Veränderung dieses Signals, daß hier keine Störung vorliegt, sondern daß ein Element der Meldeprimärleitung MPL ein Scharfschalten SV verhindern will. Bei dem erfindungsgemäßen Verfahren ist es in jedem Fall zweckmäßig, wenn ein Scharfschalten verhindert werden soll, das Überwachungssignal für einen Überwachungsbereich in einer ganz bestimmten Weise zu verändern und für einen weiteren Überwachungsbereich in einer anderen bestimmten Weise, so daß jeweils nur das zugehörige Blockschloß auf den Wunsch, das Scharfschalten zu verhindern, reagieren kann und darüber hinaus auch die Zentrale erkennen kann, aus welchem Bereich der Wunsch, das Scharfschalten zu verhindern, kommt. Dies ist an einem weiteren Ausführungsbeispiel noch verdeutlicht.The control center Z, which also receives the changed monitoring signal UESV, recognizes on the basis of the specific change in this signal that there is no interference here, but that an element of the signaling primary line MPL wants to prevent arming SV. In the case of the method according to the invention, it is expedient in any case, if arming is to be prevented, to change the monitoring signal for a monitoring area in a very specific manner and for a further monitoring area in a different specific manner, so that only the associated block lock on the Desire to prevent arming can react and the control center can also recognize the area from which the request to prevent arming comes. This is made clear in a further exemplary embodiment.
In Fig. 2 ist schematisch eine Einbruchmeldeanlage EMA mit einer Zentrale Z dargestellt, an die eine Meldeprimärleitung MPL in Form eines Token-Rings angeschlossen ist. Der Token-Ring weist bei diesem Beispiel sechs Elemente EL1 bis EL6 auf, wobei ein erster Überwachungsbereich UEB1 von den ersten drei Elementen EL1 bis EL3 mit EL3 als Blockschloß BS1 gebildet ist. Ein zweiter Überwachungsbereich UEB2 weist hier ebenfalls drei Elemente auf, mit den den Abschluß eines Bereiches bildenden Blockschlosses BS2, welches das letzte Element EL6 des Tokenrings ist. Will nun das Element EL1 ein Scharfschalten verhindern, was mit SV angedeutet ist, so wird das Überwachungssignal, das von der Zentrale Z als Überwachungstoken TUE kommt, vom Element EL1 in ein Token TUV geändert, welches vom zweiten Element EL2 unverändert weitergegeben wird. Das dritte Element EL3 bzw. das Blockschloß BS1 erkennt am geänderten Überwachungstoken TUV, daß ein Scharfschalten verhindert werden soll, so daß das Blockschloß BS1 blockiert wird. Das Blockschloß BS1 ändert das weiterzugebende Token in ein neues Überwachungstoken TUN1, welches als Überwachungssignal von jedem weiteren folgenden Element weitergegeben wird und unverändert zur Zentrale Z gelangt, wenn nicht im zweiten Überwachungsbereich UEB2 ein weiteres Element ein Scharfschalten verhindern will. Dies ist am Beispiel des Elements EL5 mit SV7 angedeutet. Das Element EL5 ändert nun das neue Überwachungstoken TUN1 in ein Token TUNV, welches ein Scharfschalten SV für den Überwachungsbereich UEB2 verhindern soll. Das zweite Blockschloß BS2 erkennt aus den erneut geänderten Token TUNV, daß für den zugehörigen Bereich das Scharfschalten zu verhindern ist und blockiert demzufolge das Blockschloß. Es kann wie oben auch schon erläutert, das zweite Blockschloß das Überwachungstoken zusätzlich derart ändern, daß dieses neu geänderte Token TUN2 beispielsweise ein weiteres geändertes Bit für das Scharfschalten zu verhindern im Überwachungsbereich UEB2 aufweist. Das nun von der Zentrale Z empfangene Token TUN2 wird als bewußt geändertes Überwachungs-Token erkannt, und zwar mit den Angaben, daß das Scharfschalten für den ersten und den zweiten Überwachungsbereich UEB1 und UEB2 zu verhindern ist.FIG. 2 schematically shows an intrusion alarm system EMA with a control center Z, to which an alarm primary line MPL in the form of a token ring is connected. In this example, the token ring has six elements EL1 to EL6, a first monitoring area UEB1 being formed by the first three elements EL1 to EL3 with EL3 as a block lock BS1. A second monitoring area UEB2 here also has three elements, with the block lock BS2 forming the end of an area, which is the last element EL6 of the token ring. If the element EL1 now wants to prevent arming, which is indicated by SV, the monitoring signal that comes from the central station Z as a monitoring token TUE changed from element EL1 to a token TUV, which is passed on unchanged by the second element EL2. The third element EL3 or the block lock BS1 recognizes from the changed monitoring token TUV that arming should be prevented so that the block lock BS1 is blocked. The block lock BS1 changes the token to be passed on to a new surveillance token TUN1, which is passed on as a surveillance signal by each subsequent element and reaches the central station Z unchanged, unless another element wants to prevent arming in the second surveillance area UEB2. This is indicated in the example of the element EL5 with SV7. The element EL5 now changes the new monitoring token TUN1 to a token TUNV, which is intended to prevent arming SV for the monitoring area UEB2. The second block lock BS2 recognizes from the again changed token TUNV that the arming is to be prevented for the associated area and consequently blocks the block lock. As already explained above, the second block lock can also change the monitoring token in such a way that this newly changed token TUN2 has, for example, a further changed bit to prevent arming in the monitoring area UEB2. The token TUN2 now received by the central station Z is recognized as a deliberately changed monitoring token, with the information that the arming for the first and the second monitoring area UEB1 and UEB2 is to be prevented.
An diesen beiden Ausführungsbeispielen ist ersichtlich, daß das leitungsüberwachende Signal von den einzelnen Elementen bzw. Stationen so verändert werden kann, daß jedes mithörende Blockschloß auf die Scharfschaltbereitschaft seines Bereichs schließen kann, bzw. daß bei einer gezielten Änderung des vorgegebenen Überwachungssignals ein Scharfschalten verhindert wird. Weist eine Meldeprimärleitung mehrere Bereiche auf, so werden unterschiedliche Teile des Überwachungssignals gezielt geändert. Das erfindungsgemäße Verfahren läßt sich bei offenen Meldeprimärleitungen bei verschiedenen Signalübertragungsverfahren anwenden, beispielsweise bei einem Polling-Verfahren oder einem Zeitschlitz-Verfahren oder auch bei einem freilaufenden System mit und ohne Kollision.These two exemplary embodiments show that the line-monitoring signal can be changed by the individual elements or stations in such a way that each listening block lock can conclude that its area is ready for arming, or that arming is prevented when the specified monitoring signal is specifically changed. If a primary signal line has several areas, different parts of the monitoring signal are specifically changed. The method according to the invention can be used in the case of open primary signal lines in various signal transmission methods, for example in a polling method or a time slot method or also in a free-running system with and without a collision.
Claims (6)
dadurch gekennzeichnet,
daß sämtliche angeschlossenen Elemente nahezu gleichzeitig Meldesignale mitzuhören und abzugeben vermögen, daß das zur Leitungsüberwachung verwendete Signal (UES) von demjenigen Element, daß ein Scharfschalten verhindern (SV) will, gezielt verändert (UESV) wird, und daß im unscharfen Zustand der Einbruchmeldeanlage (EMA) hieraus das betreffende Blockschloß (BS1, BS2) unmittelbar eine Nichtfreigabe für seinen Bereich (UEB1, UEB2) erkennt, wobei die Zentrale (Z) die gezielte Änderung des Überwachungssignals (UESV) als zulässig und nicht als Störung interpretiert.Method for preventing the arming of a burglar alarm system (EMA) with a control center (Z) and with at least one reporting primary line (MPL), which is formed by a serial signal bus (SB), on which various elements (EL1 to ELn) and at the end a block lock element (BS1, BS2) of a respective surveillance area (UEB1, UEB2) is connected,
characterized by
that all connected elements are able to listen and emit alarm signals almost simultaneously, that the signal (UES) used for line monitoring is specifically changed (UESV) by the element that wants to prevent arming (SV), and that the burglar alarm system (EMA ) the block lock (BS1, BS2) in question immediately recognizes a non-release for its area (UEB1, UEB2), the control center (Z) interpreting the targeted change in the monitoring signal (UESV) as permissible and not as a fault.
dadurch gekennzeichnet,
daß zumindest ein bestimmtes Bit der Bitfolge des Überwachungssignals (UES) geändert wird.Method according to claim 1,
characterized by
that at least a certain bit of the bit sequence of the monitoring signal (UES) is changed.
dadurch gekennzeichnet,
daß für jeden Überwachungsbereich (UEB1, UEB2) ein anderer Teil des Überwachungssignals (UES) geändert wird.Method according to claim 1 or 2,
characterized by
that a different part of the monitoring signal (UES) is changed for each monitoring area (UEB1, UEB2).
dadurch gekennzeichnet,
daß bei einer offenen Meldeprimärleitung (MPL; Partyline) das freie Ende mit einem Abschlußelement (ELA) versehen ist, welches regelmäßig als Überwachungssignal (UES) ein Ruhetelegramm mit einer bestimmten Bitfolge erzeugt.Method according to one of the preceding claims,
characterized by
that in the case of an open primary signal line (MPL; party line) the free end is provided with a terminating element (ELA) which regularly generates an idle telegram with a specific bit sequence as a monitoring signal (UES).
dadurch gekennzeichnet,
daß bei einer geschlossenen Meldeprimärleitung (MPL; Schleife, z.B. Token-Ring) die Zentrale (Z) regelmäßig als Überwachungssignal (UES) ein Ruhetelegramm erzeugt, welches im Normalzustand von jedem Element (EL1 bis ELn) unverändert bis zur Zentrale (Z) weitergegeben wird und welches von demjenigen Element, das das Scharfschalten verhindern will, verändert weitergegeben wird.Method according to one of claims 1 to 3,
characterized by
that with a closed primary signal line (MPL; loop, e.g. token ring), the control center (Z) regularly generates a standby telegram as a monitoring signal (UES), which in the normal state is passed on unchanged from each element (EL1 to ELn) to the control center (Z) and which is passed on changed by the element that wants to prevent arming.
dadurch gekennzeichnet,
daß ein Element, welches das Scharfschalten verhindern will, das Überwachungssignal zerstört.Method according to claim 1,
characterized by
that an element that wants to prevent arming destroys the monitoring signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4019663 | 1990-06-20 | ||
| DE4019663 | 1990-06-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0462442A1 true EP0462442A1 (en) | 1991-12-27 |
| EP0462442B1 EP0462442B1 (en) | 1995-03-29 |
Family
ID=6408729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91109050A Expired - Lifetime EP0462442B1 (en) | 1990-06-20 | 1991-06-03 | Method of preventing arming of an intruder alarm device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0462442B1 (en) |
| AT (1) | ATE120574T1 (en) |
| DE (1) | DE59105032D1 (en) |
| ES (1) | ES2069772T3 (en) |
| GR (1) | GR3015578T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4339318C1 (en) * | 1993-11-18 | 1995-05-04 | Grundig Emv | Device for arming a radio alarm system |
| DE4443391A1 (en) * | 1994-12-06 | 1996-06-13 | Aeg Sensorsysteme Gmbh | Microprocessor-controlled locking system with multiple locks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1766467B2 (en) * | 1968-05-28 | 1975-11-20 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for security systems, which can be activated by means of a lockable lock |
| DE3025730A1 (en) * | 1980-07-08 | 1982-01-21 | Recke, Manfred, 7410 Reutlingen | Arming system for door security - has interlock built into door post to control arming and includes lever coupled to shaft controlled by micro-switch |
| DE3316793A1 (en) * | 1983-05-07 | 1984-11-08 | Sachs Systemtechnik Gmbh, 8720 Schweinfurt | Combination of a central-locking system with an anti-theft warning system |
| EP0222194A1 (en) * | 1985-10-18 | 1987-05-20 | Siemens Aktiengesellschaft | Trigger/untrigger switching device for an intrusion alarm system |
-
1991
- 1991-06-03 AT AT91109050T patent/ATE120574T1/en not_active IP Right Cessation
- 1991-06-03 ES ES91109050T patent/ES2069772T3/en not_active Expired - Lifetime
- 1991-06-03 DE DE59105032T patent/DE59105032D1/en not_active Expired - Fee Related
- 1991-06-03 EP EP91109050A patent/EP0462442B1/en not_active Expired - Lifetime
-
1995
- 1995-03-30 GR GR950400754T patent/GR3015578T3/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1766467B2 (en) * | 1968-05-28 | 1975-11-20 | Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt | Circuit arrangement for security systems, which can be activated by means of a lockable lock |
| DE3025730A1 (en) * | 1980-07-08 | 1982-01-21 | Recke, Manfred, 7410 Reutlingen | Arming system for door security - has interlock built into door post to control arming and includes lever coupled to shaft controlled by micro-switch |
| DE3316793A1 (en) * | 1983-05-07 | 1984-11-08 | Sachs Systemtechnik Gmbh, 8720 Schweinfurt | Combination of a central-locking system with an anti-theft warning system |
| EP0222194A1 (en) * | 1985-10-18 | 1987-05-20 | Siemens Aktiengesellschaft | Trigger/untrigger switching device for an intrusion alarm system |
Non-Patent Citations (1)
| Title |
|---|
| TELENORMA NACHRICHTEN Heft 92, 1988, Seiten 55,56, Frankfurt, DE; K. ARNDT et al.: "Das schnurlose Blockschloss NBS" * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4339318C1 (en) * | 1993-11-18 | 1995-05-04 | Grundig Emv | Device for arming a radio alarm system |
| EP0654769A1 (en) * | 1993-11-18 | 1995-05-24 | GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig GmbH & Co. KG | Device for arming a radio alarm system |
| DE4443391A1 (en) * | 1994-12-06 | 1996-06-13 | Aeg Sensorsysteme Gmbh | Microprocessor-controlled locking system with multiple locks |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2069772T3 (en) | 1995-05-16 |
| GR3015578T3 (en) | 1995-06-30 |
| DE59105032D1 (en) | 1995-05-04 |
| ATE120574T1 (en) | 1995-04-15 |
| EP0462442B1 (en) | 1995-03-29 |
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