EP2277154A1 - 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

Info

Publication number
EP2277154A1
EP2277154A1 EP08874097A EP08874097A EP2277154A1 EP 2277154 A1 EP2277154 A1 EP 2277154A1 EP 08874097 A EP08874097 A EP 08874097A EP 08874097 A EP08874097 A EP 08874097A EP 2277154 A1 EP2277154 A1 EP 2277154A1
Authority
EP
European Patent Office
Prior art keywords
reporting
voltage source
supply lines
signaling devices
reporting system
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.)
Granted
Application number
EP08874097A
Other languages
German (de)
English (en)
Other versions
EP2277154B1 (fr
Inventor
Stefan Kriz
Ingo Knopp
Marcus Preisinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2277154A1 publication Critical patent/EP2277154A1/fr
Application granted granted Critical
Publication of EP2277154B1 publication Critical patent/EP2277154B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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

  • Monitoring device for monitoring the function of a reporting system, reporting system and method for monitoring
  • 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
  • Signal 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 are 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.
  • 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 message 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 dependent claims, the following description and the accompanying drawings.
  • a monitoring device which is suitable for functional monitoring, in particular state surveillance, of a reporting system and / or designed.
  • 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 avoidance devices may be designed as manual detectors, for example manual fire detectors for knocking or the like, emergency call detectors, but also as automatic detectors, for example 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 supplied 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 a DC line technology.
  • 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 detection and
  • 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.
  • Terminating resistor connected, wherein the voltage source continuously applied a voltage to the terminating resistor.
  • 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.
  • Line interruptions are, however, the so-called “creeping line interruptions", for example caused by an incomplete cable break or a slowly developing increase in the contact resistance of plug or screw contacts
  • 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 at 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.
  • Error chain can be poorly detected or monitored in borderline cases by monitoring the quiescent current.
  • test signal device an active end-of-line circuit and / or an intermediate circuit is proposed, which instead of and / or additionally a simple
  • Terminating resistor is installed.
  • 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. For example, the pulse duration during which the reference resistor is switched on is less than 0.5
  • 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 at
  • the evaluation device has means for distinguishing between the system response in the coupling of the
  • Reference resistance and the triggering of a reporting device 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.
  • test signal device for measuring the test signal for measuring the test signal
  • 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 training is based on the consideration that the connection of the test signal device
  • Reference resistance in the test signal device can also lead to an undershooting of the permissible detector operating voltage, for example, in line damage or already existing messages other signaling devices.
  • 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 Rl, 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.
  • 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,
  • 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 designed 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 time duration of the connection of the reference resistor is shorter than the signal duration of a triggered signaling device.
  • Figure 1 is a schematic block diagram of a first embodiment of the invention
  • FIG. 2 is a detail of the block diagram in FIG. 1 in the region of FIG.
  • Figure 3 is a schematic graph illustrating the operation of the embodiment.
  • Embodiment (s) of the invention
  • FIG. 1 shows a schematic block diagram of a reporting system 1 as an exemplary 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.
  • 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 avoidance devices 4, a switch 5 or an equivalent
  • 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. In other reporting systems 1, a terminating resistor is arranged instead of the test signal device 6.
  • Operation of the reporting system 1 is based on the fact that in the event of a report one or more of the signaling devices 4 close the switch 5, so that the reporting resistor Ra is switched on. By connecting a current flow is generated or increased by the supply lines 3, which is detected by suitable means in the center 2 and interpreted as a message. About one or more of the signaling devices 4 close the switch 5, so that the reporting resistor Ra is switched on.
  • Interfaces 7 then a message can be issued.
  • creeping line interruptions can occur, which are caused by incomplete cable breaks or slowly developing increase in contact resistance.
  • 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, wherein it can be seen that the reference resistor R can be connected in parallel with the supply lines 3 via a switching device 8.
  • 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 of 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.
  • Evaluation device 10 is checked whether the amplitude and / or the amount 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
  • 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 with 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 based on the missing, characteristic current pulses 11 capable of either a line break or a
  • 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)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Alarm Systems (AREA)

Abstract

Des systèmes de signalisation, par exemple des systèmes de signalisation d’incendie, des systèmes d’alarme ou des systèmes similaires, servent de dispositifs de communication le plus souvent dans des installations vastes, des messages étant générés automatiquement ou manuellement en des lieux décentralisés et transmis à un poste central. A cet effet, les systèmes de signalisation comportent une pluralité d’organes de signalisation qui sont interconnectés et reliés au poste central par des lignes de transmission de signaux et/ou d’alimentation. Dans une configuration élargie, les lignes d’alimentation et de transmission de signaux sont regroupées en une ligne à deux fils, le changement de courant électrique ou de la tension dans la ligne à deux fils étant surveillé et un message étant généré dans le poste central en cas de changements. On propose un dispositif de surveillance 6, 10 destiné à surveiller le fonctionnement d’un système de signalisation 1. Le système de signalisation 1 comporte une pluralité de dispositifs de signalisation 4 ou d’émission de signaux, de lignes d’alimentation 3 et une source de tension, les dispositifs de signalisation 4 ou d’émission de signaux étant reliés à la source de tension par le biais des lignes d’alimentation 3 et les dispositifs de signalisation 4 ou d’émission de signaux étant reliés en parallèle entre eux et à la source de tension. Le système de signalisation 1 comporte également un dispositif de signal de test 6 qui est conçu pour insérer une résistance de référence R dans les lignes d’alimentation 3 parallèlement aux dispositifs de signalisation 4 et/ou qui est conçu pour insérer une résistance de référence R en tant que charge des lignes d’alimentation 3, ainsi qu’un dispositif d’évaluation 10 destiné à détecter et à évaluer la réponse du système de signalisation 1 à l'insertion de la résistance de référence R.
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

Publications (2)

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

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08874097A Active EP2277154B1 (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

Country Status (5)

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

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US8446285B2 (en) * 2008-02-08 2013-05-21 Siemens Industry, Inc. Methods and apparatus for controlling and testing a notification appliance circuit
DE102012200945A1 (de) 2011-02-02 2012-08-02 Robert Bosch Gmbh Überwachungsvorrichtung
DE102012200941A1 (de) * 2011-02-02 2012-08-02 Robert Bosch Gmbh Überwachungsvorrichtung
CN103400481B (zh) * 2013-07-29 2015-08-19 王衡 一种用于消防报警联动系统的检测方法及其系统和装置
JP6804134B2 (ja) * 2016-09-23 2020-12-23 ホーチキ株式会社 トンネル防災システム
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CN113313922A (zh) * 2021-05-31 2021-08-27 陕西建工智能科技有限公司 施工现场火灾自动报警系统线路状态在线监测装置及方法

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Also Published As

Publication number Publication date
DE102008001428A1 (de) 2009-10-29
US20110050440A1 (en) 2011-03-03
US8456315B2 (en) 2013-06-04
CN102016946A (zh) 2011-04-13
WO2009132717A1 (fr) 2009-11-05
EP2277154B1 (fr) 2012-10-17
CN102016946B (zh) 2014-12-17

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