EP2437228A2 - Alarme, installation d'alarme et procédé de reconnaissance d'erreurs de lignes de transmission - Google Patents

Alarme, installation d'alarme et procédé de reconnaissance d'erreurs de lignes de transmission Download PDF

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Publication number
EP2437228A2
EP2437228A2 EP11008014A EP11008014A EP2437228A2 EP 2437228 A2 EP2437228 A2 EP 2437228A2 EP 11008014 A EP11008014 A EP 11008014A EP 11008014 A EP11008014 A EP 11008014A EP 2437228 A2 EP2437228 A2 EP 2437228A2
Authority
EP
European Patent Office
Prior art keywords
detector
voltage
terminal voltage
switch
terminal
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
EP11008014A
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German (de)
English (en)
Other versions
EP2437228B1 (fr
EP2437228A3 (fr
Inventor
Dietmar Brendle
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.)
Hekatron Vertriebs GmbH
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Hekatron Vertriebs GmbH
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Publication date
Application filed by Hekatron Vertriebs GmbH filed Critical Hekatron Vertriebs GmbH
Publication of EP2437228A2 publication Critical patent/EP2437228A2/fr
Publication of EP2437228A3 publication Critical patent/EP2437228A3/fr
Application granted granted Critical
Publication of EP2437228B1 publication Critical patent/EP2437228B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/123—Checking intermittently signalling or alarm systems of line circuits

Definitions

  • the invention relates to a danger alarm, hazard detection system and method for detecting line faults such as short circuits, creeping short circuits, interruptions and creeping interruptions.
  • hazard detection systems the communication of the various system devices takes place via both wired and wireless communication channels.
  • hazard detectors and other peripheral system devices are connected via lines to a control center and to each other. The communication signals are routed via these lines.
  • the power supply of the detectors and the other peripheral devices is also provided by the control center.
  • a communication and energy supply that takes place exclusively via these lines, there is the danger that the entire communication and the operation of the detectors and other peripheral devices will collapse in the event of a line fault such as an interruption and especially in the event of a short circuit.
  • the power supply and the communication take place via both sides of the loop, whereby the function and communication capability of all detectors and peripheral devices is maintained.
  • short-circuit disconnectors are known with which a short circuit can be isolated.
  • the power supply and communication can take place via both sides of the loop.
  • Short-circuit disconnectors can be arranged at regular intervals between the detectors or integrated into each detector.
  • the control panel must know the location of the short circuit on the line to isolate the short circuit.
  • the supply voltage initially drops sharply, so that the detectors are no longer sufficient with Power supplied and then the Kura gleichtrenner be opened in the loop.
  • a detector loop damaged by a short-circuit must then be restarted by the control panel. This means that the open short-circuit disconnectors must be closed again in order.
  • the control center first supplies the first detector or the first detector group with energy.
  • the short-circuit switch in the detector or at the end of the group is closed in response to a command from the control panel. Now the next detector or detector group is supplied with voltage and the next short-circuit switch is closed. This takes place until the short circuit is reached.
  • the detector loop When the short-circuit is reached, the detector loop is de-energized again and the start-up procedure must start again. However, the center now knows the detector or short-circuit disconnector behind which the short circuit is located and precedes the next start the closing of the short-circuit disconnector, which is before the short circuit, not more.
  • the first start of such a loop after the occurrence of a short shot is only for the purpose of experiencing the location of the short circuit and costs time. This time required for exploration could be avoided with automatic short-circuit disconnectors that automatically re-open a connection switch or do not close it as soon as they automatically determine that there is a short circuit on the line section behind them.
  • Such a Kurzstrusstrenner is from the DE 895 14 445 T2 known. This recognizes too high a current in a line and disconnects it by opening a previously closed switch again, one from the DE 36 24 604 A1 Known, Kurzstrusstranner compares the input and / or output side terminal voltages of KurzBanktrenners or a detector with predetermined or adjustable voltage thresholds and opens when this falls below a possibly previously closed switch. Likewise in the EP 0 347 806 A1 a short-circuit disconnector is described in a detector, which opens a turn-on transistor again when a line voltage falls below a certain value for a predetermined test time
  • the invention is therefore based on the object, a hazard detector, a hazard detection system and a method for detecting line faults such To provide short circuits and interruptions, which bring about an improvement with respect to the disadvantages mentioned in the prior art.
  • the inventive method is used in a line-bound hazard detection system, the danger alarms and other peripherals such.
  • alarm sirens, interface modules or actuators which are connected via lines to a central office and each other, and in the line sections can be separated by Kurzachlusstrenner of the rest of the line.
  • Short-circuit disconnectors can be provided either as separate devices, or integrated into the danger painters and other peripherals.
  • detector is used below, which stands for both hazard alarms and other peripheral devices with an integrated short-circuit disconnector as well as for separate short-circuit disconnectors.
  • a danger control center connects in a first step a voltage source which has a specific supply voltage with connecting lines, thereby applying a supply voltage to the detector next to the central station via the connecting lines. Thereafter, in the detector existing Energlespelcher be loaded and the detector is initialized. During initialization or after, a first terminal voltage is measured in this detector. Terminal voltage is the voltage between two wires of the connecting cables. The measurement of the first terminal voltage takes place during the time in which the detector loads the voltage source only with its low quiescent current. After the value of the first terminal voltage has been stored, the voltage source is charged with a defined current, the z. B.
  • a second terminal voltage is simultaneously measured. From the known current difference, the difference between the first and second terminal voltage and the assumed maximum known starting current of one or more other detectors, a comparison voltage is determined. Subsequently, a dacasachalter is closed, whereby the voltage applied to the first detector to the next section of the connecting lines is turned on, and thus a supply voltage to a second / further detector is applied. Immediately after closing the switch, a third terminal voltage is measured in the first detector. By way of example, in the first detector the third terminal voltage is compared with the previously determined comparison voltage.
  • the third terminal voltage falls below the reference voltage, it is assumed that there is a short circuit or creeping short circuit and the previously closed switch is opened again. However, if the third terminal voltage is greater than or equal to the comparison voltage, then the switch remains closed and the steps described above are repeated with the newly energized detector.
  • the control panel can detect the absence of a response that an error has occurred. In this case, a short circuit is detected when the previously started detector opens its connection switch again due to a too low third terminal voltage. This may be requested by the head office from this detector. Otherwise, it will initiate an interruption or a faulty detector. If, in the latter case, a detector which could not be addressed from a first side of a detector loop responds to questions from the control center from a second side of the detector loop, there is an interruption in the line, otherwise a faulty detector.
  • the detectors send messages by means of a current modulation via the connecting lines. It can be z. B. a zero can be represented by the quiescent current of the detector, while a one by the significantly higher modulation current, the z. B. is 20 mA higher than the quiescent current, is shown.
  • the higher modulation current is used as the load current for measuring the second terminal voltage. Therefore, according to the invention at least the measurement of the second terminal voltage during the transmission of a communication telegrams by the detector takes place. The measurement of the first terminal voltage can also be done while sending a telegram.
  • the first and / or the second terminal voltage are preferably measured at a point in the telegram in which several equivalent bits follow each other, which are represented by the high current.
  • the measurement of the first and / or second terminal voltage takes place within a transmitted telegram after a change from zero to one or from one zero.
  • the invention further relates to a detector for carrying out the method described above.
  • a detector comprises a switch for connecting or disconnecting connecting lines, with which a supply voltage can be switched through to a second / further detector.
  • a detector according to the invention further comprises a device for generating an electric current of defined height, a measuring device for measuring a first, second and third terminal voltage, a memory for storing a measured value of the first and / or second terminal voltage, a memory for storing the value of a maximum Einsohaltstroms one or more detectors, a Recheneinhelt for determining a comparison voltage and a Verglelchsech for comparing the third terminal voltage with the reference voltage.
  • the invention also relates to a hazard alarm system for carrying out the method according to the invention.
  • a hazard detection system has at least one voltage source which supplies voltage to danger detector and / or other peripheral devices via connecting lines.
  • the hazard warning system has at least one short-circuit disconnector comprising: a switch for connecting or disconnecting connecting lines, a device for generating a defined electric current, a measuring device for Measuring a first, second and third terminal voltage, a memory for storing a measured value of the first and / or second terminal voltage, a memory for storing the value of a maximum inrush current of one or more devices connected to a connecting line, a computing unit for determining a comparison voltage and a comparison unit for comparing the third terminal voltage with the reference voltage.
  • a short-circuit disconnector can also be integrated into a detector.
  • An inventive short-circuit disconnector comprises: a Switch for connecting or disconnecting connecting lines, means for generating a defined electrical current, a measuring device for measuring a first, second and third terminal voltage, a memory for storing a measured value of the first and / or second terminal voltage, a memory for storing the value of a maximum inrush current of one or more devices connected to a connecting line devices, a computing unit for determining a comparison voltage and a comparison unit for comparing the third terminal voltage with the comparison voltage.
  • the invention relates to a hazard detector with an integrated short-circuit disconnector as previously described.
  • FIG. 1 shows a hazard alarm system (1) according to the invention which z. B. may be a fire alarm system.
  • the danger warning system (1) consists of a central station (2) with a first terminal (5) and a second terminal (6) and a master line (9), starting from the first terminal (5) several hazard masters (8) via a, in This example two-wire running, connecting line (7) connects to the center.
  • the danger message (8) connects the connecting line (7) and other peripheral devices such as sirens or interface modules with which z. B. devices that do not support the protocol of the detector line can be operated on the detector line, with the center.
  • hazard detectors (8) and other peripheral devices are collectively called detectors (8).
  • FIG. 1 shows a hazard alarm system (1) according to the invention which z. B. may be a fire alarm system.
  • the danger warning system (1) consists of a central station (2) with a first terminal (5) and a second terminal (6) and a master line (9), starting from the first terminal
  • short-circuit disconnectors (11) are integrated in the detectors (8). However, the short-circuit disconnectors (11) can also monitor the connecting lines (7) as separate devices between the detectors (8).
  • the short-circuit disconnectors (11), which, as in the illustrated embodiment, in the detectors (8) can be integrated, in the detectors (8) use existing facilities, such as a computing device (10) and a portion of a memory (13),
  • FIG. 2 some details of a short circuit breaker (1) are shown while in FIG. 4 a timing diagram is shown, with which the sequence of the method according to the invention is illustrated.
  • a short-circuit disconnector (11) according to the invention is connected to terminals (3a, 3b, 4a, 4b) to the adem (3, 4) of the connecting line (7).
  • a controllable switch (12) Between the terminals 3a and 3b of the wire 3 there is a controllable switch (12). with which a connection between the terminals 3a and 3b can be made and re-separated.
  • each a voltmeter (14) for measuring a voltage between the terminals 3a and 4a or 3b and 4b and each a current sink (15) for generating a load current (I 2 ) in the supply line ( 7).
  • I 2 load current
  • the voltages between the terminals 3a and 4a or 3b and 4b can be measured with the voltage meters (14).
  • the short-circuit disconnector (11) At the latest after the central has sent the detector (8) a command to close its connection switch (12), the short-circuit disconnector (11) at a time t 1 with the voltmeter (14) measures a first terminal voltage (U 1 ) between the terminals 3a and 4a is applied to the detector (8) and stores the measured value in a memory (13) for later use.
  • the first terminal voltage (U 1 ) differs from the voltage applied by the center to the connecting line (7) only by the small amount dropped on the connecting line (7).
  • the short-circuit disconnector (11) loads the voltage source in the first terminal (5) of the control center (2) by means of a current sink (15) with a load current (I 2 ).
  • the load current (I 2 ) generates a higher voltage drop at the connection line (7) than the quiescent current (I 1), this means that at time t 2, the second terminal voltage (U 2) at the terminals (3a, 4a) is measured, which is also for future use in the memory (13 ) is stored.
  • the comparison value U min is reduced by an additional safe healing amount.
  • shorting separator (11) After determining the reference value U min shorting separator (11) closes at the time t s its switch (12) and then measures the time t s, a third terminal voltage (U 3). After closing the switch (12), a second / further detector (8) is connected to the center, whereupon the second / further detector (8) loads the voltage source in the first terminal (5) with its inrush current. As a result, the current I s flows at the time and generates a new voltage drop via the connecting line (7) to the first detector (8). Finally, the short-circuit disconnector (11) compares the third terminal voltage (U s ) with the comparison value (U min ).
  • the second / further detector (8) remains connected to the center and can communicate with this after a start time.
  • the newly connected second / further detector (8) then takes on the further start of the detector line (9) the function of the previous first detector. If the control panel (2) detects at this stage that the second / further detector is not responding to their requests, the control panel (2) concludes that there is a line or detector error and initiates the startup procedure at the second terminal (6). continued.
  • the second / further detector is finally reached by the central station (2) via the second terminal (6) at a later time and can communicate with it, then there is an interruption in the connection line (7) between the first and the second second / further detector (8) before, otherwise, it is assumed that the second / further detector (8) is defective.
  • the center continues the startup process on the second terminal (6).
  • the first detector (8) may notify the center, upon request, that there is a short circuit in the line section following it.
  • terminal voltages (U 1 , U 2 , U 3 can be dispensed with, necessary for a current measurement, measuring resistor between the terminals 3a and 3b or 4a and 4b, the resistance of the connecting line (7) between the center and
  • longer detector lines (9) with additional subscribers (8) are possible than with a short circuit detection by means of a current measurement.
  • FIG. 3 another embodiment of a short-circuit disconnector (11) is described. unlike in FIG. 2 shown Kurzaussusstranner (11), the Kuraechlusstrenner shown here (11) on two Voritatieschalter (12), which are attached directly to the terminals 3a and 3b and are bridged by a respective diode (16). For this, this embodiment has only ever a voltmeter (14) and a current sink (15).
  • the voltage drop across the diodes must be taken into account when determining the comparison value.
  • the diodes are used to supply voltage to the first or second detectors (8) after switching on, while the switches (12) in the respective detector (8) are still closed.
  • the communication transmitter (15) of a detector (8) or a separate short-circuit disconnector (11) serves as a current sink (15) for generating the load current (I 2 ).
  • the telegram starts at time t M , where, as shown, the bit sequence 101010 is transmitted.
  • the measurement of the first and the second terminal voltage (U 1 , U 2 ) is preferably carried out at the end of a bit sequence, each having the same values. For example, the first terminal voltage (U 1 ) at the end of a sequence of three times 0 and the second terminal voltage (U 2 ) at the end of a bit sequence with three times 1 measured.
  • the first terminal voltage (U 1 ) is measured after a change from 1 to 0 and the second terminal voltage (U 2 ) after a change from 0 to 1,

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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)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Keying Circuit Devices (AREA)
  • Emergency Alarm Devices (AREA)
EP11008014.0A 2010-10-04 2011-10-04 Alarme, installation d'alarme et procédé de reconnaissance d'erreurs de lignes de transmission Active EP2437228B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010047227 DE102010047227B3 (de) 2010-10-04 2010-10-04 Gefahrenmelder, Gefahrenmeldeanlage und Verfahren zum Erkennen von Leitungsfehlern

Publications (3)

Publication Number Publication Date
EP2437228A2 true EP2437228A2 (fr) 2012-04-04
EP2437228A3 EP2437228A3 (fr) 2012-05-16
EP2437228B1 EP2437228B1 (fr) 2016-08-10

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EP (1) EP2437228B1 (fr)
DE (1) DE102010047227B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112689858A (zh) * 2018-05-29 2021-04-20 奥创尼卡消防和保安有限公司 危险警告装置的网络的测试
EP3825973A1 (fr) * 2019-11-22 2021-05-26 Honeywell International Inc. Contrôleur de système d'alarme incendie, système d'alarme incendie, dispositif de séparation et procédé d'initialisation d'un système d'alarme incendie

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9880214B2 (en) 2013-08-21 2018-01-30 Honeywell International Inc. Apparatus and method for detection and adaption to an end-of-line resistor and for ground fault localization
WO2019242863A1 (fr) 2018-06-21 2019-12-26 Autronica Fire & Security As Système et procédé de démarrage d'une boucle de détecteur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624604A1 (de) 1985-07-19 1987-02-05 Hochiki Co Notfall-rberwachungsanlage
EP0347808A1 (fr) 1988-06-21 1989-12-27 Max Dipl.-Ing. Aicher Procédé pour le traitement de boue d'épuration
EP0347806A1 (fr) 1988-06-23 1989-12-27 Siemens Aktiengesellschaft Dispositif pour signaler les risques
DE69514445T2 (de) 1994-08-18 2000-07-06 Nohmi Bosai Ltd., Tokio/Tokyo Übertragungsleitung-Überwachungsvorrichtung zur Anwendung in einem Feueralarmsystem

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10051329C2 (de) * 2000-10-10 2003-12-11 Job Lizenz Gmbh & Co Kg Gefahrenmeldeanlage
EP2051220A1 (fr) * 2007-10-17 2009-04-22 Siemens Building Technologies Fire & Security Products GmbH & Co. oHG Dispositif de séparation pour accumulateurs d'énergie pour ligne électrique conductrice d'énergie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624604A1 (de) 1985-07-19 1987-02-05 Hochiki Co Notfall-rberwachungsanlage
EP0347808A1 (fr) 1988-06-21 1989-12-27 Max Dipl.-Ing. Aicher Procédé pour le traitement de boue d'épuration
EP0347806A1 (fr) 1988-06-23 1989-12-27 Siemens Aktiengesellschaft Dispositif pour signaler les risques
DE69514445T2 (de) 1994-08-18 2000-07-06 Nohmi Bosai Ltd., Tokio/Tokyo Übertragungsleitung-Überwachungsvorrichtung zur Anwendung in einem Feueralarmsystem

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112689858A (zh) * 2018-05-29 2021-04-20 奥创尼卡消防和保安有限公司 危险警告装置的网络的测试
EP3825973A1 (fr) * 2019-11-22 2021-05-26 Honeywell International Inc. Contrôleur de système d'alarme incendie, système d'alarme incendie, dispositif de séparation et procédé d'initialisation d'un système d'alarme incendie

Also Published As

Publication number Publication date
EP2437228B1 (fr) 2016-08-10
EP2437228A3 (fr) 2012-05-16
DE102010047227B3 (de) 2012-03-01

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