NO306430B1 - Alarm detection link for an alarm signal - Google Patents

Alarm detection link for an alarm signal

Info

Publication number
NO306430B1
NO306430B1 NO930204A NO930204A NO306430B1 NO 306430 B1 NO306430 B1 NO 306430B1 NO 930204 A NO930204 A NO 930204A NO 930204 A NO930204 A NO 930204A NO 306430 B1 NO306430 B1 NO 306430B1
Authority
NO
Norway
Prior art keywords
signal
comparison circuit
alarm
information
passed
Prior art date
Application number
NO930204A
Other languages
Norwegian (no)
Other versions
NO930204L (en
NO930204D0 (en
Inventor
Kurt Smutny
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 NO930204D0 publication Critical patent/NO930204D0/en
Publication of NO930204L publication Critical patent/NO930204L/en
Publication of NO306430B1 publication Critical patent/NO306430B1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16—Indicators for switching condition, e.g. "on" or "off"
    • H01H9/167—Circuits for remote indication

Landscapes

  • Circuits Of Receivers In General (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Alarm Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Facsimiles In General (AREA)
  • Analogue/Digital Conversion (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

In order to take into account leakage resistances occurring in the case of information contacts (3a to 3n), it is proposed to pass the signal which is formed by an information contact (3a to 3n), together with a reference signal, to a comparison circuit (7). The output of the comparison circuit (7) then carries a signal which corresponds to the switching state of the information contact (3a to 3n). The signals of a plurality of information contacts (3a to 3n) are preferably passed to a multiplexer circuit (15, 17) whose output signal is passed to the comparison circuit (7). In a further refinement, the output signal of the comparison circuit (7) is passed via a potential-isolating element (21) to a control and processing device (23) having a processor. <IMAGE>
NO930204A 1992-01-22 1993-01-21 Alarm detection link for an alarm signal NO306430B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4201630 1992-01-22

Publications (3)

Publication Number Publication Date
NO930204D0 NO930204D0 (en) 1993-01-21
NO930204L NO930204L (en) 1993-07-23
NO306430B1 true NO306430B1 (en) 1999-11-01

Family

ID=6450020

Family Applications (1)

Application Number Title Priority Date Filing Date
NO930204A NO306430B1 (en) 1992-01-22 1993-01-21 Alarm detection link for an alarm signal

Country Status (4)

Country Link
EP (1) EP0552619B1 (en)
AT (1) ATE156297T1 (en)
DE (1) DE59306987D1 (en)
NO (1) NO306430B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5488323A (en) * 1994-12-14 1996-01-30 United Technologies Corporation True hysteresis window comparator for use in monitoring changes in switch resistance
DE10333911B3 (en) * 2003-07-25 2005-06-02 Diehl Ako Stiftung & Co. Kg Cascadable arrangement of switch sets

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141029A (en) * 1982-02-16 1983-08-22 Fuji Facom Corp Receiving circuit
GB8614198D0 (en) * 1986-06-11 1986-07-16 Salplex Ltd Information handling & control systems
US4777479A (en) * 1987-04-03 1988-10-11 Unisys Corporation Switch position indicator

Also Published As

Publication number Publication date
EP0552619A2 (en) 1993-07-28
EP0552619B1 (en) 1997-07-30
DE59306987D1 (en) 1997-09-04
ATE156297T1 (en) 1997-08-15
EP0552619A3 (en) 1993-12-15
NO930204L (en) 1993-07-23
NO930204D0 (en) 1993-01-21

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