EP2277154B1 - Dispositif de surveillance destiné à surveiller le fonctionnement d'un système de signalisation, système de signalisation et procédé de surveillance - Google Patents

Dispositif de surveillance destiné à surveiller le fonctionnement d'un système de signalisation, système de signalisation et procédé de surveillance Download PDF

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Publication number
EP2277154B1
EP2277154B1 EP08874097A EP08874097A EP2277154B1 EP 2277154 B1 EP2277154 B1 EP 2277154B1 EP 08874097 A EP08874097 A EP 08874097A EP 08874097 A EP08874097 A EP 08874097A EP 2277154 B1 EP2277154 B1 EP 2277154B1
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Prior art keywords
reporting
devices
voltage source
reference resistor
supply lines
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EP08874097A
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German (de)
English (en)
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EP2277154A1 (fr
Inventor
Stefan Kriz
Ingo Knopp
Marcus Preisinger
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • 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
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/06—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using power transmission lines

Definitions

  • the invention relates to a monitoring device for monitoring the function of a reporting system, wherein the reporting system comprises a plurality of signaling devices and / or signaling devices, supply lines and a voltage source, wherein the signaling devices and / or signaling devices connected to the voltage source via the supply lines and wherein the signaling devices and / or signaling devices connected in parallel to each other and to the voltage source.
  • the invention further relates to a reporting system with this monitoring device and a method for checking the functionality of a reporting system or the.
  • Message systems such as fire alarm systems, alarm systems or the like, are used as communication devices usually in large-scale systems, being generated at decentralized locations automatically or manually messages and forwarded to a central office.
  • the message systems include a plurality of detectors, which are connected via signal and / or supply lines to each other and to the control center.
  • the supply and signal lines are combined to form a two-wire line, wherein the change in the current flow or the voltage in the two-wire line is monitored and a message is generated when changes in the center.
  • Form of DC-powered circuits at the end, that is at the point to be monitored, there is a terminal resistance.
  • the terminal resistance and the current flow through this terminal resistance are monitored by an evaluation circuit in the control center. For example, if the terminal resistor changes its resistance by more than plus / minus 40%, it will be interpreted as a foreign intervention and an alarm will be triggered.
  • a monitoring device for monitoring the operation of a reporting system with the features of claim 1, a reporting system with the features of claim 5 and a method for checking the functionality of a reporting system or the signaling system with the features of claim 11 are disclosed. Preferred or advantageous embodiments of the invention will become apparent from the subclaims, the following description and the accompanying figures.
  • a monitoring device is proposed, which is suitable and / or designed for function monitoring, in particular condition monitoring, of a reporting system.
  • the monitoring device is designed to detect a creeping line interruption.
  • the reporting system comprises a plurality of signaling devices and / or signaling devices, supply lines and a voltage source.
  • the signaling devices or signal devices are connected to the voltage source via the supply lines, so that the signaling devices or signal devices are electrically connected in parallel to one another and to the voltage source.
  • the signaling devices can be designed as manual detectors, for example manual fire detectors for impacting or the like, emergency callers, but also as automatic detectors, such as motion detectors, heat detectors, fire detectors, etc.
  • the Signaleinrichtunegn can be realized as optical, acoustic and / or haptic signal generator, such as signal horns or warning lights.
  • the supply lines are preferably acted upon by the voltage source with a DC voltage, so that the type of supply line can be referred to as a two-wire line and / or the structure as DC line technology.
  • the publication GB 2 286 735 A which is probably the closest prior art, describes a monitoring system and a monitoring unit with error detection, wherein at least one monitoring unit can perform a self-test. If the monitoring unit detects a fault during the self-test, the impedance in the connected lines is changed by triggering a switch.
  • the signaling devices are preferably designed so that upon activation of a message they change from an open line state to a closed line state, or by a reporting resistor is connected in the line.
  • the monitoring device has a test signal device which is designed to connect a reference resistor in the supply lines parallel to the signaling devices and / or which is connected to the connection of one or the reference resistor as a conclusion of the supply lines.
  • the monitoring device comprises an evaluation device for detecting and evaluating the system response of the reporting system to the connection of the reference resistor.
  • the reference resistor is connected to the signaling devices and optionally in addition to a terminating resistor.
  • the reference resistor is temporarily activated as a terminating resistor.
  • the terminating resistor is preferably the resistor which, in the case of the parallel connection, is arranged by the signaling devices and the terminating resistor with the greatest distance and / or after the largest number of previously interposed signaling devices.
  • a terminating resistor is connected at the end of the supply lines, whereby a voltage is applied continuously to the terminating resistor by the voltage source.
  • This circuit requires a constant quiescent current through the terminating resistor, which can be monitored in a central office. When there is a line interruption, the quiescent current can no longer flow, which can be detected as a fault in the control center.
  • the so-called "creeping line interruptions” are problematic, for example caused by an incomplete cable break or a slowly developing increase in the contact resistance of plug-in or screw contacts. These creeping line interruptions can in the worst case lead to failures of the reporting devices and thus the reporting system.
  • creeping line interruptions also lead to a reduction in the quiescent current through the terminating resistor described above, which can be detected by the control panel and displayed as a fault.
  • the problem with this type of detection is the situation when a reporting resistor is connected in parallel in the supply lines by one or more of the signaling devices in the reporting case. This changes the voltage divider between the line resistance of the creeping line interruption and the reporting resistance of the signaling device, which leads to a reduction in the supply voltage to the signaling device. If the unrecognized line resistance of the creeping line interruption is too high, the permissible operating voltage is undershot when the message state of the message device is taken. In addition, the current required for alarm detection or alarm triggering may not be able to flow. In borderline cases, this error chain can only be badly detected or monitored by monitoring the quiescent current.
  • an active end-of-line circuit and / or an intermediate circuit is proposed, which is installed instead of and / or in addition to a simple terminating resistor.
  • the advantage of this arrangement is that a relevant reporting case can be simulated by the test signal device for a short time.
  • the reaction to the connection of the reference resistor of the reporting system in the form of an increased current can be recorded and evaluated by the evaluation device.
  • An increase in the creeping line resistance leads to a reduction in the quiescent current or the increased current.
  • the test signal device is designed for the temporary and / or pulsed connection of the reference resistor.
  • the pulse duration is preferably short enough so as not to be interpreted as a real message of the reporting devices.
  • the pulse duration during which the reference resistor is switched on is less than 0.5 seconds, preferably less than 0.25 seconds.
  • the pitch of the Zuschaltpulse is preferably formed equidistant in time and may be selected so that the reference resistance is switched in time intervals greater than one second, preferably greater than 5 seconds and in particular greater than 10 seconds.
  • a regular connection of the reference resistor has the advantage that it can be concluded in the absence of the system response to a complete line interruption.
  • the evaluation device has means for distinguishing between the system response in the coupling of the reference resistor and the triggering of a reporting device. These means can, for example, observe the length of time of the system response, evaluate the time interval of the system response or be designed as a filter.
  • the test signal device is designed to measure the voltage in the supply lines.
  • the test signal device comprises a program-technical and / or circuitry implementation, so that when falling below a predetermined or predetermined voltage amount of the reference resistor is turned off and / or disabled. This refinement is based on the consideration that the connection of the reference resistor in the test signal device can also lead to a fall below the permissible detector operating voltage, for example in the case of line damage or in the case of already existing messages from other signaling devices.
  • the evaluation device does not receive any system response of the signaling system that can be attributed to the connection of the reference resistor and can interpret this as a fault or reporting case.
  • the invention also relates to a signaling system having the features of claim 5, which comprises a plurality of signaling devices, supply lines and a voltage source, wherein the signaling devices are connected to the voltage wave via supply lines and wherein the signaling device are connected in parallel to each other and to the voltage source.
  • the reporting system is characterized in that a monitoring device according to one of the preceding claims or as previously described is integrated.
  • the signaling devices are designed as manual and / or automatic detectors, which switch on a reporting resistance when activated.
  • the value of the reference resistor is equal to or substantially equal to the value of the reporting resistor.
  • the reporting case can be simulated particularly realistic by the fürsignal gifted.
  • the reference resistance may be smaller than the reporting resistance.
  • the value of the reference resistance of the common resistance is equal to all or some, e.g. two or three, parallel reporting resistors. This embodiment takes into account that more than one reporting resistor R1, R2 ...
  • test signal device is embodied as a separate module, for example enclosed in a housing.
  • test signal device is integrated in a signaling device and / or signal technology coupled with it in such a way that is connected as a reference resistor of the reporting resistance of the signaling device.
  • a supplementary or alternative structural embodiment provides that the voltage source and the test signal device are integrated together in a message center.
  • This embodiment allows the notification system to be integrated with few components in a building or the like.
  • the message center can also contact several branches of supply lines, each branch being designed as a two-wire line and preferably separately is evaluated to each other.
  • Both the test signal device and the evaluation device can be designed using a rigid circuit and / or analog.
  • one or both devices comprises a data processing device, in particular a microcontroller, wherein parameters of the monitoring device, such as pulse duration of the connection, limits for current or voltage can be entered in a simple manner.
  • a final object of the invention relates to a method for checking the functionality of a message system having the features of claim 11, wherein the message system is preferably formed according to one of the preceding claims, wherein a reference resistor as a terminating resistor and / or in parallel to one or the terminating resistor temporarily and / or pulsed is switched on, wherein the current flow is measured in the region of the voltage source and being closed by a comparison of the current flow value with switched reference resistor with a predetermined limit on the functioning of the reporting system.
  • the current measurement is preferably carried out via the use of a measuring shunt.
  • the duration of the connection of the reference resistor is shorter than the signal duration of a triggered signaling device.
  • FIG. 1 shows a schematic block diagram of a reporting system 1 as an embodiment of the invention, which is designed for example as a fire alarm system or alarm system.
  • the reporting system 1 comprises a center 2 in which a DC voltage source (not shown) is arranged. Via supply lines 3, a plurality of signaling devices 4 are connected to the center 2 or to the DC voltage source, wherein the signaling devices 4 are arranged in parallel to each other.
  • the supply lines 3 are preferably designed as a two-wire line, wherein the two-wire line ensures both the power supply and the signal transmission.
  • the signaling devices 4 can be designed, for example, as manual detectors, fire detectors, automatic detectors, motion detectors, etc. Upon activation of one of the signaling devices 4, a switch 5 or an equivalent component is closed, so that a reporting resistor Ra is connected between the supply lines 3.
  • the reference numeral 6 denotes a signal testing device which is arranged in the circuit diagram opposite to the center 2 at the end of the supply lines 3 as a conclusion.
  • a terminating resistor is arranged instead of the test signal device 6.
  • the functioning of the reporting system 1 is based on the fact that one or more of the signaling devices 4 close the switch 5 in the reporting case, so that the reporting resistor Ra is switched on.
  • creeping line interruptions can occur, which are caused by incomplete cable breaks or slowly developing increase in contact resistance.
  • Such a creeping line interruption is shown in the block diagram by the resistor Ri representatively, which is serially integrated into the supply lines 3.
  • Test signal device 6 To detect the functionality of the reporting system 1 and in particular of creeping line interruptions such as the resistor Ri is the Test signal device 6 is formed, preferably at regular intervals a reference resistor R parallel to the signaling devices 4 in the supply lines 3 turn.
  • FIG. 2 shows the test signal device 6 in a somewhat detailed representation, it being recognized that via a switching device 8, the reference resistor R is connected in parallel to the supply lines 3.
  • the switching device 8 is switched on or activated, for example, by a pulse generator 9.
  • the test signal device 6 couples into the supply lines 3 with the reference resistor R only one passive element.
  • FIG. 3 shows a graph over the time course of the current I in the supply lines 3 by an evaluation device 10, which is integrated in the center 2 or formed as a separate unit, wherein the current I is plotted over the time t.
  • a current flows, which corresponds to zero or a quiescent current value in the case where all the signaling devices 4 are open.
  • current peaks 11 occur, each current peak 11 being associated with a connection of the reference resistor R.
  • the pulse duration deltat of the pulse peaks corresponds approximately to the turn-on duration of the reference resistor R and is approximately 250 ms.
  • the evaluation device 10 it is checked whether the amplitude and / or the magnitude of the pulse peaks 11 exceeds a reference value Is. If this is the case, then a sufficiently small resistance RI is concluded as a gradual line interruption. If the amplitude and / or the magnitude of the pulse peaks 11 are below this predetermined or predefinable value, then a creeping line interruption or another malfunction is assumed and a fault signal is sent to the interfaces 7.
  • the pulse duration deltat is selected so that the evaluation device 10 can clearly distinguish the system response from activating a message device 4 in the event of a report.
  • the reference resistor R is preferably the same or similar in size to one of the reporting resistors Ra, so that when the reference resistor R is connected, an alarm case is simulated. If, due to an increased line resistance Ri, the voltage would fall below a permissible or required detector operating voltage in the event of an alarm, this already results when the reference resistor R in is connected simulated alarm case falls below a previously calculated minimum value of the current pulses IS, so that by evaluating the current pulses a creeping line interruption can be detected in good time and displayed as a fault.
  • the test signal device 6 has a voltage monitor 12, which is designed and / or connected for monitoring the applied voltage in the supply lines 3.
  • the voltage monitor 12 is disposed at the opposite end of the power source 3 supply voltage.
  • the voltage monitoring 12 secures the case that, when the reference resistor R is connected, an admissible signaling operating voltage is undershot, for example in the case of an already existing alarm case. If a preset minimum voltage is exceeded, the periodic connection of the switching device 8 or the reference resistor R is deactivated as a reaction, so that no further current pulses are generated.
  • the evaluation device 10 is on the basis of the missing, characteristic current pulses 11 able to close either a line interruption or a shortfall of the preset minimum voltage and can output this result as a message at the interfaces 7.
  • the test signal device 6 is designed as an end-off-line circuit and can be used for example in conventional fire alarm systems to meet the extended requirements of the standards DIN EN 54-2 and DIN EN 54-13.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Alarm Systems (AREA)

Claims (12)

  1. Dispositif de surveillance (6, 10) pour surveiller le fonctionnement d'un système de notification (1),
    le système de notification (1) présentant une pluralité de dispositifs de notification (4) et/ou de dispositifs de signalisation, des lignes d'alimentation (3) et une source de tension,
    les dispositifs de notification (4) et/ou les dispositifs de signalisation étant connectés avec la source de tension par le biais des lignes d'alimentation (3) et les dispositifs de notification (4) et/ou les dispositifs de signalisation étant branchés en parallèle les uns avec les autres et avec la source de tension,
    le dispositif de surveillance (6, 10)
    comprenant un dispositif de signal de contrôle (6) qui est configuré pour mettre en circuit une résistance de référence (R) dans les lignes d'alimentation (3) parallèlement avec les dispositifs de notification (4) ou les dispositifs de signalisation et/ou pour mettre en circuit une ou la résistance de référence (R) en tant que terminaison des lignes d'alimentation (3), et comprenant un dispositif d'interprétation (10) pour détecter et interpréter la réponse système du système de notification (1) à la mise en circuit de la résistance de référence (R),
    caractérisé en ce que le dispositif de surveillance (6, 10) est configuré de telle sorte qu'une situation de notification est simulée par la mise en circuit de la résistance de référence (R).
  2. Dispositif de surveillance (6, 10) selon la revendication 1, caractérisé en ce que le dispositif de signal de contrôle (6) est configuré pour une mise en circuit impulsionnelle de la résistance de référence (R).
  3. Dispositif de surveillance (6, 10) selon la revendication 1 ou 2, caractérisé en ce que le dispositif d'interprétation (10) présente des moyens pour faire la différence entre la réponse système lors de la mise en circuit de la résistance de référence (R) et le déclenchement d'un dispositif de notification (4).
  4. Dispositif de surveillance (6, 10) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de signal de contrôle (6) est configuré pour mesurer la tension dans les lignes d'alimentation (3) et est configuré par programmation et/ou par technique de câblage pour mettre hors circuit et/ou pour désactiver la résistance de référence (R) lorsque la tension devient inférieure à une valeur donnée.
  5. Système de notification (1) comprenant une pluralité de dispositifs de notification (4) et/ou de dispositifs de signalisation, des lignes d'alimentation (3) et une source de tension, les dispositifs de notification (4) ou les dispositifs de signalisation étant connectés avec la source de tension par le biais des lignes d'alimentation (3) et les dispositifs de notification (4) ou les dispositifs de signalisation étant branchés en parallèle les uns avec les autres et avec la source de tension,
    caractérisé par
    un dispositif de surveillance (6, 10) selon l'une des revendications précédentes.
  6. Système de notification (1) selon la revendication 5, caractérisé en ce que les lignes d'alimentation (3) sont réalisées sous la forme de lignes à deux fils et/ou la source de tension sous la forme d'une source de tension continue.
  7. Système de notification (1) selon la revendication 5 ou 6, caractérisé en ce que les dispositifs de notification (4) sont réalisés sous la forme d'avertisseurs de danger manuels et/ou automatiques qui, en cas d'activation, mettent en circuit une résistance de notification (Ra).
  8. Système de notification (1) selon la revendication 7, caractérisé en ce que la résistance de référence (R) présente la même résistance ou une résistance du même ordre de grandeur que l'une des résistances de notification (Ra).
  9. Système de notification (1) selon la revendication 7, caractérisé en ce que la résistance de référence (R) est réalisée sous la forme d'une résistance de notification (Ra) dans l'un des dispositifs de notification (4).
  10. Système de notification (1) selon l'une des revendications précédentes, caractérisé en ce que la source de tension et le dispositif de surveillance sont intégrés dans une centrale de notification (2).
  11. Procédé de contrôle de l'aptitude au fonctionnement d'un système de notification (1), le système de notification (1) présentant une pluralité de dispositifs de notification (4) et/ou de dispositifs de signalisation, des lignes d'alimentation (3) et une source de tension, les dispositifs de notification (4) ou les dispositifs de signalisation étant connectés avec la source de tension par le biais des lignes d'alimentation (3) et les dispositifs de notification (4) ou les dispositifs de signalisation étant branchés en parallèle les uns avec les autres et avec la source de tension, de préférence selon l'une des revendications précédentes,
    une résistance de référence (R) étant mise en circuit temporairement et/ou de manière impulsionnelle en tant que résistance de terminaison et/ou en parallèle avec une résistance de terminaison,
    le flux de courant (I) dans la zone de la source de tension étant mesuré et l'aptitude au fonctionnement du système de notification (1) étant déduite par une comparaison de la valeur du flux de courant (I) lorsque la résistance de référence (R) est mise en circuit avec une valeur limite (Is) prédéfinie.
  12. Procédé selon la revendication 11, caractérisé en ce que la durée dans le temps (deltat) de la mise en circuit de la résistance de référence (R) est plus courte que la durée du signal d'un dispositif de notification (4) déclenché.
EP08874097A 2008-04-28 2008-11-24 Dispositif de surveillance destiné à surveiller le fonctionnement d'un système de signalisation, système de signalisation et procédé de surveillance Active EP2277154B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008001428A DE102008001428A1 (de) 2008-04-28 2008-04-28 Überwachungsvorrichtung zur Funktionsüberwachung eines Meldesystems, Meldesystem sowie Verfahren zur Überwachung
PCT/EP2008/066085 WO2009132717A1 (fr) 2008-04-28 2008-11-24 Dispositif de surveillance destiné à surveiller le fonctionnement d’un système de signalisation, système de signalisation et procédé de surveillance

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Publication Number Publication Date
EP2277154A1 EP2277154A1 (fr) 2011-01-26
EP2277154B1 true EP2277154B1 (fr) 2012-10-17

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US (1) US8456315B2 (fr)
EP (1) EP2277154B1 (fr)
CN (1) CN102016946B (fr)
DE (1) DE102008001428A1 (fr)
WO (1) WO2009132717A1 (fr)

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DE102012200941A1 (de) * 2011-02-02 2012-08-02 Robert Bosch Gmbh Überwachungsvorrichtung
DE102012200945A1 (de) 2011-02-02 2012-08-02 Robert Bosch Gmbh Überwachungsvorrichtung
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EP2277154A1 (fr) 2011-01-26
WO2009132717A1 (fr) 2009-11-05
US8456315B2 (en) 2013-06-04
DE102008001428A1 (de) 2009-10-29
CN102016946B (zh) 2014-12-17
CN102016946A (zh) 2011-04-13
US20110050440A1 (en) 2011-03-03

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