EP0004910B1 - Gefahrenmeldeanlage - Google Patents

Gefahrenmeldeanlage Download PDF

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Publication number
EP0004910B1
EP0004910B1 EP79101029A EP79101029A EP0004910B1 EP 0004910 B1 EP0004910 B1 EP 0004910B1 EP 79101029 A EP79101029 A EP 79101029A EP 79101029 A EP79101029 A EP 79101029A EP 0004910 B1 EP0004910 B1 EP 0004910B1
Authority
EP
European Patent Office
Prior art keywords
multiplex
state
store
alarm
read
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
EP79101029A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0004910A1 (de
Inventor
Karlheinz Schreyer
Peer Dr. Thilo
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0004910A1 publication Critical patent/EP0004910A1/de
Application granted granted Critical
Publication of EP0004910B1 publication Critical patent/EP0004910B1/de
Expired legal-status Critical Current

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Classifications

    • 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
    • G08B26/006—Alarm systems in which substations are interrogated in succession by a central station with substations connected to an individual line, e.g. star configuration

Definitions

  • the invention relates to a hazard detection system with a plurality of detectors connected to a control center via signal lines, the status of the detectors in the control center being ascertainable via test devices and being able to be displayed via an evaluation device, a read / write memory in the control center for storing the Occupancy status of each signal line and a multiplex interrogation device for querying the individual signal lines and the associated memory locations is provided, and finally the interrogated detector signals together with the interrogated memory signals are passed through a comparison device and can only be switched to the evaluation device if the associated memory location is occupied is determined.
  • the object of the invention is to develop a hazard avoidance system of the type mentioned at the outset in such a way that the actual occupancy of all the signaling lines can be checked in a simple manner and entered into the read / write memory of the control center.
  • the preamble of claim 1 is based on a European application no. 79101031.7 (priority date April 19, 1978).
  • this object is achieved in that a multiplex input device is provided at the input of the read-write memory, which is connected synchronously downstream of the multiplex interrogation device and can be switched on in this way via a changeover switch. that the current occupancy status of all signaling lines can be determined and automatically written into the memory.
  • the memory is automatically written from the interrogation device; this is preferably controlled by a microcomputer.
  • a display device is expediently provided, in which the stored assignment of each individual message line can be made visible.
  • the system can be put into operation using a changeover switch, i.e. a command key. From then on, any deviation from the target state now defined is evaluated as a fault.
  • the single figure shows the circuit diagram of an alarm system according to the invention with a control center Z, from which individual detection lines L1 to Ln lead to detectors M1 to Mn.
  • the signal lines each lead to a detector interface MA1 to MAn, in which the state of the line or the connected detectors are checked. Depending on this state, a signal r for idle state, a for alarm state or s for fault message appears at one of the three outputs.
  • the output signals of the signaling interfaces MA ... MAn are interrogated synchronously via multiplex interrogation devices, namely the alarm signals a via the interrogation device MX1, the fault signals s via the interrogation device MX2 and the idle signals r via the interrogation device MX3.
  • the alarm signals a and the fault signals s are each fed via a comparison device VG to an evaluation device for alarm signals AA and a fault evaluation AS.
  • a memory SP is also provided in the control center, the individual memory locations Sp1 ... Spn of which are each assigned to an alarm line and in which the busy state this relevant message line can be stored. These memory locations Sp1... Spn are scanned synchronously with the detector connections via the multiplex interrogation device MX7, and the signal read out from the memory location is compared in the comparison device VG with the incoming fault or alarm signal. Such a detector signal is only passed on to the evaluation device AA or AS via the coincidence elements AN1 and AN2 if the memory location in question is marked as occupied, ie it shows a logical one.
  • a multiplex input device MX8 which also runs synchronously with the interrogation devices MX1, MX2 and MX3. If the actual status of the signaling system is now to be recorded and saved, i.e. during commissioning, then the BT operating button is still open.
  • the AND gates AN1 and AN2 are blocked via the AND gate AN3 and do not allow any signals emitted by the detector connections to pass.
  • an occupied state is written into the memory SP via the OR gate OR1 and the AND gate AN4, when an idle signal r or an alarm signal a is reported by the relevant detector interface MA1 ... MAn. In these cases, a detector is connected to the relevant detector line.
  • a fault signal s is reported, a logical zero is written into the relevant storage location Sp, i.e. that the relevant detector line is saved as "not used”. If the entire memory SP is written, the actual state of the system can be checked via a display device with light-emitting diodes LD1 ... LDn. If this condition is found to be correct, the system can be started using the BT operating button. Now the AND gate AN4 is blocked via the negation element NE, so that the memory state can no longer be changed. Fault signals or alarm signals are only passed on to the evaluation device AA or AS via the AND gates AN1 and AN2 if the memory location in question shows the occupied state.
  • the alarm evaluation AA and the fault evaluation AS each contain a multiplex output device MX4 and .MXS, via which an alarm signal a or a fault signal s of a specific signal line in the display device for switching on the associated LED AD1 ... ADn or SD1 ... SDn is used.
  • a flip-flop AF1 ... AF1 or SF1 ... SFn is assigned to each LED.
  • the alarm signal is also fed to a bistable alarm switch BAS, which in the usual way gives an acoustic alarm or forwards the alarm message to a higher-level control center.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
  • Fire Alarms (AREA)
  • Selective Calling Equipment (AREA)
  • Time-Division Multiplex Systems (AREA)
EP79101029A 1978-04-19 1979-04-04 Gefahrenmeldeanlage Expired EP0004910B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2817053A DE2817053C2 (de) 1978-04-19 1978-04-19 Gefahrenmeldeanlage
DE2817053 1978-04-19

Publications (2)

Publication Number Publication Date
EP0004910A1 EP0004910A1 (de) 1979-10-31
EP0004910B1 true EP0004910B1 (de) 1982-06-23

Family

ID=6037455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79101029A Expired EP0004910B1 (de) 1978-04-19 1979-04-04 Gefahrenmeldeanlage

Country Status (5)

Country Link
US (1) US4286117A (enrdf_load_stackoverflow)
EP (1) EP0004910B1 (enrdf_load_stackoverflow)
JP (1) JPS54142096A (enrdf_load_stackoverflow)
AT (1) AT373409B (enrdf_load_stackoverflow)
DE (1) DE2817053C2 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004039A1 (en) * 1984-03-05 1985-09-12 Progrator Innovation Ab Monitor for an alarm system
JPS6165555A (ja) * 1984-09-05 1986-04-04 Mitsubishi Electric Corp ホームコントロールシステムおよびインターホンシステム
US4672654A (en) * 1984-12-12 1987-06-09 At&T Company PBX security system for monitoring security guard tours
ATE103427T1 (de) * 1990-01-17 1994-04-15 Siemens Ag Schutzeinrichtung fuer elektrische maschinen.
US7010110B2 (en) * 1999-03-31 2006-03-07 Walker Digital, Llc Method and apparatus for monitoring telephone status

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842208A (en) * 1970-01-26 1974-10-15 Paraskevakos Elect & Comm Sensor monitoring device
DE2262823A1 (de) * 1972-12-22 1974-10-10 Controlmatic Ges F Ind Automat Alarm- und meldesystem
DE2341087C3 (de) * 1973-08-14 1979-09-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Automatische Brandmeldeanlage
SE391250B (sv) * 1974-11-26 1977-02-07 Saab Scania Ab Bevakningsanleggning, innefattande en centralenhet, somŸvia en kommunikationskanal er forbunden med ett flertal lokala terminalenheter
DE2641489C2 (de) * 1976-09-15 1984-05-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Übertragung von Meßwerten in einem Brandmeldesystem

Also Published As

Publication number Publication date
EP0004910A1 (de) 1979-10-31
ATA283879A (de) 1983-05-15
DE2817053A1 (de) 1979-10-31
US4286117A (en) 1981-08-25
DE2817053C2 (de) 1985-11-21
JPS6239477B2 (enrdf_load_stackoverflow) 1987-08-24
JPS54142096A (en) 1979-11-05
AT373409B (de) 1984-01-25

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