ATE805T1 - HAZARD DETECTION SYSTEM WITH A FREQUENCY MEASUREMENT DEVICE PROVIDED IN A CENTRAL CENTER. - Google Patents

HAZARD DETECTION SYSTEM WITH A FREQUENCY MEASUREMENT DEVICE PROVIDED IN A CENTRAL CENTER.

Info

Publication number
ATE805T1
ATE805T1 AT80100142T AT80100142T ATE805T1 AT E805 T1 ATE805 T1 AT E805T1 AT 80100142 T AT80100142 T AT 80100142T AT 80100142 T AT80100142 T AT 80100142T AT E805 T1 ATE805 T1 AT E805T1
Authority
AT
Austria
Prior art keywords
intermediate station
alarm
transmission line
central control
line
Prior art date
Application number
AT80100142T
Other languages
German (de)
Inventor
Karlheinz Schreyer
Josef Voringer
Original Assignee
Siemens Aktiengesellschaft Berlin Und Muenchen
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 Aktiengesellschaft Berlin Und Muenchen filed Critical Siemens Aktiengesellschaft Berlin Und Muenchen
Application granted granted Critical
Publication of ATE805T1 publication Critical patent/ATE805T1/en

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

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)
  • Road Signs Or Road Markings (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Selective Calling Equipment (AREA)

Abstract

1. Hazard warning system comprising a frequency measuring device (FM) which is arranged in a central control (Z), and comprising a plurality of alarms (M1...M16) which for power supply can each be connected to a direct voltage by means of a two-wire alarm line (ML1...ML16) and which furthermore contain a circuit arrangement (LM , CM , TM ) in order to produce a frequency characterized the message state of the alarm line on the particular alarm line, wherein in a plurality of alarm lines can be respectively led to an intermediate station (Z5) in which by means of a t.d.m. device (ZM), all connected alarm lines can be serially connected to a single two-wire transmission line (UL) which connects this intermediate station to the central control, characterized in that in the intermediate station (ZS), a current supply circuit (SV) for the t.d.m. device (ZM) is connected to the two wires (a, b) of the transmission line (UL) in parallel with the t.d.m. device (ZM) by means of a respective choke (La, Lb), that the current supply circuit (SV) has both a parallel connection for a direct voltage source (B) which is to be arranged in the intermediate station (ZS) and a device for voltage stabilization (DZ), and that there are provided switches (s1, s2) which depending upon switching position respectively establish between the transmission line (UL) and the intermediate station (ZS) a.d.c. connection or a capacitive connection (Ca , Cb ) in order to effect d.c. blocking in the transmission line (UL) of the intermediate station (ZS) from the central control (Z).
AT80100142T 1979-01-29 1980-01-11 HAZARD DETECTION SYSTEM WITH A FREQUENCY MEASUREMENT DEVICE PROVIDED IN A CENTRAL CENTER. ATE805T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2903266A DE2903266C2 (en) 1979-01-29 1979-01-29 Alarm system
EP80100142A EP0014329B1 (en) 1979-01-29 1980-01-11 Danger signalling installation with a frequency metering device placed in a central post

Publications (1)

Publication Number Publication Date
ATE805T1 true ATE805T1 (en) 1982-04-15

Family

ID=6061613

Family Applications (1)

Application Number Title Priority Date Filing Date
AT80100142T ATE805T1 (en) 1979-01-29 1980-01-11 HAZARD DETECTION SYSTEM WITH A FREQUENCY MEASUREMENT DEVICE PROVIDED IN A CENTRAL CENTER.

Country Status (5)

Country Link
EP (1) EP0014329B1 (en)
AT (1) ATE805T1 (en)
DE (1) DE2903266C2 (en)
DK (1) DK149354C (en)
NO (1) NO146518C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3336290A1 (en) * 1982-10-08 1984-06-07 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Method for the teletransmission of data of a heating or cooling system
US4922183A (en) * 1988-06-03 1990-05-01 Raychem Corporation Methods, systems and apparatus for detecting changes in variables
NO20032192D0 (en) * 2003-05-14 2003-05-14 Jens Marius Johnsen Floor Advertising

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2202110B2 (en) * 1972-01-18 1974-03-21 Gerhard Dr.-Ing. 8000 Muenchen Gruenberger Device for monitoring a number of reporting points
DE2341087C3 (en) * 1973-08-14 1979-09-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen Automatic fire alarm system
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
DE2641489C2 (en) * 1976-09-15 1984-05-30 Siemens AG, 1000 Berlin und 8000 München Method for the transmission of measured values in a fire alarm system

Also Published As

Publication number Publication date
DK149354C (en) 1986-11-03
DK149354B (en) 1986-05-12
DE2903266C2 (en) 1985-08-08
NO794142L (en) 1980-07-30
DE2903266A1 (en) 1980-08-07
NO146518C (en) 1982-10-13
NO146518B (en) 1982-07-05
EP0014329A1 (en) 1980-08-20
DK35180A (en) 1980-07-30
EP0014329B1 (en) 1982-03-31

Similar Documents

Publication Publication Date Title
DE69025312D1 (en) COMPUTER CONTROLLED CIRCUIT BREAKER SYSTEM WITH RELIABLE STATUS INDICATOR
IT1086324B (en) FIRE ALARM SYSTEM WITH MULTIPLE SIGNALS, WHICH CAN OPERATE ON THE SAME SIGNALING CIRCUIT
DE3065857D1 (en) Improvements relating to security equipment
AT299384B (en) Control circuit for a transmission system for high-voltage direct current with at least two converter stations connected to alternating current networks
ATE5108T1 (en) CIRCUIT ARRANGEMENT FOR BURGLAR OR FIRE ALARM SYSTEMS.
ATE805T1 (en) HAZARD DETECTION SYSTEM WITH A FREQUENCY MEASUREMENT DEVICE PROVIDED IN A CENTRAL CENTER.
GB1506451A (en) Airfield lighting circuits
ATE41540T1 (en) MONITORING DEVICE FOR TRAFFIC SIGNAL SYSTEMS.
ATE43734T1 (en) REMOTE CONTROL SYSTEM.
JPS534181A (en) Controlling system
SU898534A1 (en) Device for indicating fuse state
IT1085725B (en) FIRE ALARM SYSTEM WITH MULTIPLE SIGNALS, WHICH CAN OPERATE ON THE SAME SIGNALING CIRCUIT
SU933494A1 (en) Device for warning state of contact system current isolation
NL7507046A (en) Blown fuse indicator with isolated alarm circuit - led across fuse with optocoupling to phototransistor
SU633775A1 (en) Movable object attitude control apparatus
GB1515199A (en) Monitoring and warning indication circuit for vehicles
GB972875A (en) Improvements relating to mechanical digitisers
RU1827677C (en) Method of light indication of existence of phase voltages across crane trolleys and device for its accomplishment
ATE143519T1 (en) METHOD FOR INCREASING INTERFERENCE IN HAZARD ALARM SYSTEMS
SU1734113A1 (en) Remote indication unit
SU623222A1 (en) Emergency mode indicator
GB1349823A (en) Automatic telecommunications exchange
GB1460281A (en) Electrical circuits
PL101320B1 (en) ELECTRICAL EQUIPMENT SIGNALING SYSTEM
JPS53138266A (en) Signal switch circuit

Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee