EP0111178B1 - Ueberwachungsanlage mit mehreren, kettenförmig an einer Meldelinie liegenden Meldern - Google Patents

Ueberwachungsanlage mit mehreren, kettenförmig an einer Meldelinie liegenden Meldern Download PDF

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Publication number
EP0111178B1
EP0111178B1 EP83111329A EP83111329A EP0111178B1 EP 0111178 B1 EP0111178 B1 EP 0111178B1 EP 83111329 A EP83111329 A EP 83111329A EP 83111329 A EP83111329 A EP 83111329A EP 0111178 B1 EP0111178 B1 EP 0111178B1
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EP
European Patent Office
Prior art keywords
monitoring system
detecting
electronic circuit
time
station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83111329A
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German (de)
English (en)
French (fr)
Other versions
EP0111178A1 (de
Inventor
Jürg Dr. sc. nat. Muggli
Peter Dipl. El.-Ing Mueller
Hansjürg Waelti
Eugen Dr. Phil. Schibli
Max Grimm
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.)
Cerberus AG
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Cerberus AG
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Publication date
Application filed by Cerberus AG filed Critical Cerberus AG
Publication of EP0111178A1 publication Critical patent/EP0111178A1/de
Application granted granted Critical
Publication of EP0111178B1 publication Critical patent/EP0111178B1/de
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a monitoring system with a plurality of detectors lying in a chain on a detection line, which are connected to a control center with an evaluation unit, in each of which a series switch is opened to a first value by a jump in the interrogation voltage generated by the control center, and the series switch is jumped switches the same interrogation voltage to a second value and after a time determined by the detector state to the next detector or to the next control unit, an electronic circuit part generating electrical signals with time intervals characterizing the detector state and giving them to the evaluation unit.
  • European patent specification 0 042 501 describes a method for identifying detectors within a fire alarm system. If a fault occurs, the query direction for the affected zone is reversed.
  • EP-A-0 093 872 also describes a method for identifying detectors in a monitoring system.
  • Each of the detectors has an address memory that is provided with the address that is characteristic of the detector.
  • the object of the invention is to eliminate the disadvantages of the known systems.
  • the purpose of the invention is to achieve that the detectors or sensors of different types can be operated in the same detection line.
  • the following types are to be understood: ionization, optical smoke, heat, radiation, gas and intrusion detectors or sensors. Fire alarm buttons and control devices are also provided, which are connected to the same line as the detectors.
  • the different types of detectors can be connected to a detection line or control center in the invention without any adjustment problems because each detector or sensor makes its own decision about its state (silence, warning, alarm, fault). Existing surveillance systems can therefore be modernized with little effort. If the electronic circuit is installed in the detector base, the circuits and the control center form a complete transmission system. This has the great advantage that a system can also be put into operation when only some of the detectors are used (commissioning, conversion, revision by sector).
  • the electronic circuit according to the invention allows the transmission of all signals (information signals from the detectors to the control center and control signals in the opposite direction) on only one line pair.
  • signals information signals from the detectors to the control center and control signals in the opposite direction
  • the electronic circuit according to the invention allows the transmission of all signals (information signals from the detectors to the control center and control signals in the opposite direction) on only one line pair.
  • detectors or sensors can also be connected to the electronic circuit according to the invention. This is an advantage if several detectors or sensors are housed in the same room. No matter which detector or sensor responds, only the room is detected. Each detector switches on the associated alarm indicator (e.g. LED) with its alarm status.
  • alarm indicator e.g. LED
  • the electronic circuit according to the invention also serves to detect a short circuit in the direction of the next detector.
  • the short-circuit point can be located precisely and the fault can therefore be remedied quickly and easily.
  • the full working voltage is maintained across the entire detector line. Only the part of the detector line on which the short circuit exists is switched off. This has the advantage that, despite a short circuit, the polling cycle of the individual detectors or sensors is still carried out and a change in their status is recognized immediately.
  • the electrical signals corresponding to the detector states are only in the control center predetermined time ranges evaluated.
  • the intervening time periods are defined as "fault bands". Signals falling in these fault bands then cause a corresponding fault message in the control center.
  • the invention allows those electrical signals which the control center emits to combat the alarm recognized and reported by one or more detectors to be sent on the same lines. In contrast, in the prior art, these signals are sent on additional, separate lines. The invention therefore saves a lot of wiring material.
  • FIG. 1 shows the control center 7 of a monitoring system.
  • the individual detectors with detector bases F1, F2 to Fn and detector inserts ME1, ME2 to MEn are connected to the control center on detector lines 1, 4, 5.
  • the detector inserts can be designed as ionization, heat, radiation, gas, intrusion inserts and optical smoke detector inserts.
  • the lines of the chain-connected detectors are connected to terminals A1 and A2 of control center 7 and evaluation unit 71.
  • the electronic circuit of the invention is arranged in each of the detector bases F1, F2 to Fn. At least one detector insert is provided on each base. In order to make FIG. 1 clear, only switches S1, S2 to Sn and electronic circuits B1, B2 to Bn are drawn in the base of the invention.
  • the electronic circuit B which is drawn in FIGS. 4, 5, 6, can also be accommodated in each of the detector inserts ME of FIG. 1. This is e.g. shown in Fig. 9. It has also been considered to install the electronic circuit in a connector V between the detector insert and base F, as shown in FIG. 8. If old surveillance systems are to be modernized, this can be done without much effort, since the invention can be arranged either in the detector base, in the detector insert or in connector V.
  • FIG. 2 shows the two-stage interrogation voltage U.
  • the time t is entered on the abscissa and the voltage U on lines 1, 4 is entered on the ordinate.
  • the control voltage 8 within the query voltage 9 will be explained later in connection with FIG. 6.
  • the dashed control pulse 8 is also used to reset a detector that is in the alarm state. This has the advantage that detectors are reset to their normal idle status after their alarm is triggered individually or differentiated according to the type of detector.
  • This query voltage of FIG. 2 is generated by the control center 7 and given to the lines or detector line.
  • One stage 11 of the voltage U is z. B. at 0 volts; the other level is 20 volts, for example.
  • the time t 2 is equal to t 1 .
  • the third detector is in the alarm state.
  • the current amplitude jumps to a high value (caused by the additional current of the alarm indicator L,).
  • the time t 3 (the time from connecting the third detector to switching the third Switch to the fourth detector) is significantly longer than the other "normal" times t 1 and t 2 .
  • the evaluation unit 71 recognizes these two criteria (current amplitudes and times) of the alarm state of the third detector.
  • the control center 7 then initiates the corresponding measures.
  • the fourth detector is supposed to be in the normal idle state of operational readiness again.
  • the detector states can also be transmitted to the evaluation unit 71 only by one criterion (current amplitude or times) or with different current amplitudes, but with identical times.
  • a fault state of the third detector is assumed in the lower part of FIG. 2 as a further example. While the two detectors, consisting of the bases F1 and insert ME1 and base F2 and insert ME2, are in the idle state, the time t ' 3 is much longer.
  • the evaluation unit 71 evaluates this as a fault in the third detector.
  • the head office starts the corresponding measures.
  • the following detectors are once again in the normal idle state of operational readiness.
  • this second example is shown in dashed lines. If a detector is in the fault state, the alarm indicator is not activated, and the dashed current curve in FIG. 2 therefore shows no jump in the current amplitude when S2 is switched through.
  • the transmission of an alarm status to the control center is extremely reliable thanks to the high current amplitude.
  • the identification of the alarmed detector is also very useful and could be achieved by giving each detector its own number (address), so that the exact location of an event is immediately known.
  • the address and the status of the detector could therefore be transmitted to the control center using digital methods, for example.
  • such a system is very complex and prone to failure. It is also difficult to install because each detector has to be assigned a special number. The system may stop working if there is a single error.
  • the addressing of the individual detectors and the associated problems are eliminated. Rather, the numbering (identification) of the detectors is done by counting the current pulses (10) by the control center in each cycle.
  • the time intervals between the individual current pulses 10 can be arranged in such a way that the shortest time corresponds to the normal idle state (operational readiness), an average time for alarm, and the longest time for Disturbance is provided.
  • the time for the warning can either be the same as the time of the fault or it can be different. It is also easily possible for the shortest time to correspond to the alarm state, an average time for the normal idle state (operational readiness) and the longest time for the fault to be provided. In this case too, the time for the warning is either the same as that for the fault or different. All of these possible combinations can be provided on a case-by-case basis.
  • Circuit B of the invention is drawn in FIG. 4.
  • the interrogation voltage U of the control center 7 is at the terminals of lines 1 and 4.
  • the detector insert ME is connected to the circuit in the middle of FIG. 4.
  • a state of the detector insert corresponds to a specific voltage or current value at its terminals 1a, 4a.
  • capacitor C1 feeds the entire circuit including the detector insert.
  • the collector-base path of T11 is polarized forward and a current across R7 creates a stable voltage on Zener diode D7.
  • Transistor T3 acts with R8 as a constant current source, the current of which is mirrored via R9, R12 and T5. A limited current is thus available at terminal 4a for supplying the detector insert ME.
  • the transistors T1, T2, T4, T6, T7, T8, T9, T10, T15, T17, T18 are not conductive and C6 is discharged.
  • R22 blocks switches T9, T10 during this time.
  • T A For an average voltage value at 4a, corresponding to a detector in the alarm state, there is an average charging time T A , where T R ⁇ T A ⁇ T s .
  • T8 switches on, T7 also conducts and the current pulse 10, determined by C3, R20, is registered by the evaluation unit 71 of the control center.
  • R21 keeps T7, T8 in the conductive state and also serves to discharge C3 when the line voltage later goes back to zero.
  • the gates of T9, T10 are controlled by T8 so that these two FETs switch to the next detector (terminal 5) as soon as the multivibrator T7, T8 conducts. It is clear that the cathodes of T9, T10 are interchanged, depending on whether terminal 4 or 5 as input or. Output serves.
  • the capacitance C6 maintains the voltage across R14-R17 during the brief control pulse voltage dips.
  • FIG. 3 shows a query cycle of the second type, which is also carried out with the circuit of FIG. 4.
  • the time t is entered on the abscissa and the interrogation voltage U of lines 1, 4 and 5 on the ordinate.
  • the upper part of FIG. 3 shows the interrogation voltage 9, to which an increased voltage 13 is connected.
  • the increased voltage 13 is intended to support the capacitor C1 of FIG. 4. If a large number of detectors are connected to a detector line and are queried, the capacitors C1 of the last detectors MEn, MEn-1 discharge relatively strongly. With the help of voltage 13, all capacitors C1 can be recharged sufficiently. In this case, the circuit (Fig. 4) must be dimensioned or.

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  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
EP83111329A 1982-11-23 1983-11-12 Ueberwachungsanlage mit mehreren, kettenförmig an einer Meldelinie liegenden Meldern Expired EP0111178B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH680882 1982-11-23
CH6808/82 1982-11-23

Publications (2)

Publication Number Publication Date
EP0111178A1 EP0111178A1 (de) 1984-06-20
EP0111178B1 true EP0111178B1 (de) 1987-10-28

Family

ID=4315346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83111329A Expired EP0111178B1 (de) 1982-11-23 1983-11-12 Ueberwachungsanlage mit mehreren, kettenförmig an einer Meldelinie liegenden Meldern

Country Status (8)

Country Link
US (1) US4568919A (enrdf_load_stackoverflow)
EP (1) EP0111178B1 (enrdf_load_stackoverflow)
JP (1) JPS59109995A (enrdf_load_stackoverflow)
CA (1) CA1201505A (enrdf_load_stackoverflow)
DE (1) DE3374241D1 (enrdf_load_stackoverflow)
DK (1) DK536683A (enrdf_load_stackoverflow)
NO (1) NO159323C (enrdf_load_stackoverflow)
YU (1) YU227883A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322841A1 (de) * 1993-07-08 1995-01-26 Zettler Gmbh Gefahrenmeldeanlage
DE10048599C1 (de) * 2000-09-30 2002-04-18 Bosch Gmbh Robert Vorrichtung zur elektrischen Energieversorgung von Meldern, Steuer- und Signalisierungseinrichtungen
DE10051329A1 (de) * 2000-10-10 2002-04-18 Job Lizenz Gmbh & Co Kg Gefahrenmeldeanlage
DE102007008263B4 (de) 2007-02-20 2025-08-14 Robert Bosch Gmbh Überwachungsvorrichtung für eine Zweidraht-Leitung, Gefahrenmeldesystem mit der Überwachungsvorrichtung

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EP0156474A1 (en) * 1984-02-24 1985-10-02 Tann-Synchronome Limited Vigilant fire alarm system
DE3585127D1 (de) * 1984-09-20 1992-02-20 Siemens Ag Verfahren und anordnung zur melderidentifizierung einer gefahrenmeldeanlage.
GB8431883D0 (en) * 1984-12-18 1985-01-30 Gent Ltd Transmission system
JPH0632517B2 (ja) * 1985-07-19 1994-04-27 ホーチキ株式会社 異常監視装置
GB2194867B (en) * 1986-09-09 1991-05-29 Mitsubishi Electric Corp A transmission line control system and method for disconnecting a sub-bus from a main-bus
DE3637681A1 (de) * 1986-11-05 1988-05-19 Siemens Ag Gefahrenmeldeanlage nach dem pulsmeldesystem
ATE85719T1 (de) * 1988-06-23 1993-02-15 Siemens Ag Gefahrenmeldeanlage.
FR2637107B1 (fr) * 1988-09-26 1994-05-13 Alcatel Cit Systeme de collecte des alarmes d'un ensemble de stations
US5097259A (en) * 1990-06-18 1992-03-17 General Signal Corporation Line fault isolation system
ATE111247T1 (de) * 1990-07-26 1994-09-15 Siemens Ag Gefahrenmeldeanlage.
US5421189A (en) * 1994-01-21 1995-06-06 Ciba Corning Diagnostics Corp. Electrical connection system for electrochemical sensors
JP3292345B2 (ja) * 1994-03-29 2002-06-17 能美防災株式会社 火災報知設備の中継器および火災報知設備の受信部
DE4426466C2 (de) * 1994-07-26 2002-06-20 Siemens Ag Anordnung und Verfahren zum Betreiben von Gefahrenmeldern
DE19537632C1 (de) * 1995-10-10 1997-04-03 Dornier Gmbh Einrichtung zur Überwachung von Objekten
US5801913A (en) * 1996-04-29 1998-09-01 Kiddie-Fenwal, Inc. Isolation circuitry
US5831546A (en) * 1996-05-10 1998-11-03 General Signal Corporation Automatic addressing in life safety system
US5959528A (en) * 1998-07-01 1999-09-28 General Signal Corporation Auto synchronous output module and system
US6459370B1 (en) 1998-11-03 2002-10-01 Adt Services Ag Method and apparatus for determining proper installation of alarm devices
DE19960422C1 (de) * 1999-12-15 2001-01-25 Job Lizenz Gmbh & Co Kg Verfahren und Vorrichtung zur Bestimmung von als Stromsenken wirkenden gestörten Meldern in einer Gefahrenmeldeanlage
DE10234612A1 (de) * 2002-07-30 2004-02-19 Robert Bosch Gmbh Gefahrenmeldeanlage
DE10342625A1 (de) * 2003-09-15 2005-04-14 Robert Bosch Gmbh Sensor
US7533517B2 (en) * 2005-04-14 2009-05-19 Snecma Exhaust nozzle for an engine of a flying craft
US7535687B2 (en) * 2006-04-13 2009-05-19 Ge Security, Inc. Alarm system sensor topology apparatus and method
FR2991116B1 (fr) * 2012-05-25 2014-05-16 Schneider Electric Ind Sas Systeme de detection securisee integrant des fonctions de diagnostic
EP2701132B1 (en) 2012-08-23 2018-07-04 Novar GmbH Alarm device having a local energy storage unit, and bus-based alarm system
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
EP4106125A1 (en) 2021-06-18 2022-12-21 Carrier Fire & Security EMEA BV Short-circuit isolator

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DE1297008B (de) * 1967-01-11 1969-06-04 Siemens Ag Meldeanlage mit in einer zweiadrigen Schleife parallelgeschalteten Meldern
US3725865A (en) * 1971-05-03 1973-04-03 Synectron Inc Electronic alarm system
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DE2533382C2 (de) * 1975-07-25 1980-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Verfahren und Einrichtung zur Übertragung von Meßwerten in einem Brandmeldesystem
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DE3008450C2 (de) * 1980-03-05 1986-09-18 Georg Prof. Dr. 8012 Ottobrunn Färber Sequentielles Übertragungssystem zum adressenlosen Anschließen mehrerer Teilnehmer an eine Zentrale
CH651688A5 (de) * 1980-06-23 1985-09-30 Cerberus Ag Verfahren zur uebertragung von messwerten in einer brandmeldeanlage und einrichtung zur durchfuehrung des verfahrens.
JPH0157399B2 (enrdf_load_stackoverflow) * 1980-08-13 1989-12-05 Sekomu Kk
JPS57141793A (en) * 1981-02-25 1982-09-02 Fujitsu Ltd Alarm centralized monitor system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4322841A1 (de) * 1993-07-08 1995-01-26 Zettler Gmbh Gefahrenmeldeanlage
DE10048599C1 (de) * 2000-09-30 2002-04-18 Bosch Gmbh Robert Vorrichtung zur elektrischen Energieversorgung von Meldern, Steuer- und Signalisierungseinrichtungen
DE10051329A1 (de) * 2000-10-10 2002-04-18 Job Lizenz Gmbh & Co Kg Gefahrenmeldeanlage
DE10051329C2 (de) * 2000-10-10 2003-12-11 Job Lizenz Gmbh & Co Kg Gefahrenmeldeanlage
DE102007008263B4 (de) 2007-02-20 2025-08-14 Robert Bosch Gmbh Überwachungsvorrichtung für eine Zweidraht-Leitung, Gefahrenmeldesystem mit der Überwachungsvorrichtung

Also Published As

Publication number Publication date
NO159323B (no) 1988-09-05
DK536683A (da) 1984-05-24
NO834287L (no) 1984-05-24
DE3374241D1 (en) 1987-12-03
YU227883A (en) 1986-10-31
NO159323C (no) 1988-12-14
DK536683D0 (da) 1983-11-23
US4568919A (en) 1986-02-04
EP0111178A1 (de) 1984-06-20
CA1201505A (en) 1986-03-04
JPS59109995A (ja) 1984-06-25
JPH0518159B2 (enrdf_load_stackoverflow) 1993-03-11

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