EP0121102A3 - Arrangement for switching individual indicators over to the monitoring operation in a danger alarm system - Google Patents

Arrangement for switching individual indicators over to the monitoring operation in a danger alarm system Download PDF

Info

Publication number
EP0121102A3
EP0121102A3 EP84102148A EP84102148A EP0121102A3 EP 0121102 A3 EP0121102 A3 EP 0121102A3 EP 84102148 A EP84102148 A EP 84102148A EP 84102148 A EP84102148 A EP 84102148A EP 0121102 A3 EP0121102 A3 EP 0121102A3
Authority
EP
European Patent Office
Prior art keywords
alarm
measured value
inspection
mmw
line
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
EP84102148A
Other languages
German (de)
Other versions
EP0121102A2 (en
EP0121102B1 (en
Inventor
Carl Dipl.-Ing. Koch
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
Priority to AT84102148T priority Critical patent/ATE31986T1/en
Publication of EP0121102A2 publication Critical patent/EP0121102A2/en
Publication of EP0121102A3 publication Critical patent/EP0121102A3/en
Application granted granted Critical
Publication of EP0121102B1 publication Critical patent/EP0121102B1/en
Expired legal-status Critical Current

Links

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
    • G08B26/005—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 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
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits

Landscapes

  • 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)
  • Emergency Alarm Devices (AREA)

Abstract

1. An arrangement for switching over individual alarms to inspection operation in a danger alarm system comprising a central control unit (Z) and at least one alarm line (ML) which is connected to a plurality of alarms (M1, M2...) which are cyclically interrogated, where, in the cyclic interrogation of the respective alarm measured value (MMW), in each alarm (M) a timer (TG1) which can be controlled by the alarm measured value (MMW) via a measured value converter (MW), is connected to the alarm line (ML) and, by temporarily (TG2) connecting (TR2) a load resistor (R) to the alarm line (ML), generates an additional current pulse (A) and where, in the central control unit (Z), the alarm address is derived from the number of increases thus brought about in the alarm line current (IL), and the alarm measured value (MMW) is derived from the length (T) of the respective switching delay, characterized in that each alarm (M) comprises an electric switching device (S) which can be actuated externally and which, for the alarm inspection, affects the additional current pulse (A) of the respective alarm (M) in a determinate fashion, and that as a result, in the central control unit, using a device provided for this purpose, the inspection state of the respective alarm and the emitted alarm signals of the subsequently triggered alarm are recognised as inspection alarm.
EP84102148A 1983-03-03 1984-02-29 Arrangement for switching individual indicators over to the monitoring operation in a danger alarm system Expired EP0121102B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102148T ATE31986T1 (en) 1983-03-03 1984-02-29 ARRANGEMENT FOR SWITCHING INDIVIDUAL DETECTORS TO INSPECTION MODE IN AN ALARM SYSTEM.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833307616 DE3307616A1 (en) 1983-03-03 1983-03-03 ARRANGEMENT FOR SWITCHING SINGLE DETECTORS INTO INSPECTION MODE IN A HAZARD ALARM SYSTEM
DE3307616 1983-03-03

Publications (3)

Publication Number Publication Date
EP0121102A2 EP0121102A2 (en) 1984-10-10
EP0121102A3 true EP0121102A3 (en) 1984-11-14
EP0121102B1 EP0121102B1 (en) 1988-01-13

Family

ID=6192459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102148A Expired EP0121102B1 (en) 1983-03-03 1984-02-29 Arrangement for switching individual indicators over to the monitoring operation in a danger alarm system

Country Status (3)

Country Link
EP (1) EP0121102B1 (en)
AT (1) ATE31986T1 (en)
DE (2) DE3307616A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE52632T1 (en) * 1985-07-29 1990-05-15 Siemens Ag METHOD AND DEVICE FOR OPERATIONAL MONITORING OF OPTICAL SMOKE DETECTORS.
DE102013100487A1 (en) 2013-01-17 2014-07-17 Helmut Thate Device for the production of ice cream

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2054027B2 (en) * 1969-11-14 1977-08-25 Cerberus AG, Männedorf, Zürich (Schweiz) DEVICE FOR CHECKING THE OPERATIONAL READINESS OF SMOKE DETECTORS
US4194191A (en) * 1975-11-10 1980-03-18 General Electric Company Smoke simulating test apparatus for smoke detectors
DE2533382C2 (en) * 1975-07-25 1980-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and device for the transmission of measured values in a fire alarm system
DE2638068B2 (en) * 1976-08-24 1980-08-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fire alarm system with several detectors that can be operated via a message loop
EP0066200A1 (en) * 1981-05-26 1982-12-08 Siemens Aktiengesellschaft Method and device for revision in a hazard, particularly a fire alarm system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2054027B2 (en) * 1969-11-14 1977-08-25 Cerberus AG, Männedorf, Zürich (Schweiz) DEVICE FOR CHECKING THE OPERATIONAL READINESS OF SMOKE DETECTORS
DE2533382C2 (en) * 1975-07-25 1980-07-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method and device for the transmission of measured values in a fire alarm system
US4194191A (en) * 1975-11-10 1980-03-18 General Electric Company Smoke simulating test apparatus for smoke detectors
DE2638068B2 (en) * 1976-08-24 1980-08-28 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fire alarm system with several detectors that can be operated via a message loop
EP0066200A1 (en) * 1981-05-26 1982-12-08 Siemens Aktiengesellschaft Method and device for revision in a hazard, particularly a fire alarm system

Also Published As

Publication number Publication date
ATE31986T1 (en) 1988-01-15
EP0121102A2 (en) 1984-10-10
EP0121102B1 (en) 1988-01-13
DE3468761D1 (en) 1988-02-18
DE3307616A1 (en) 1984-09-06

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