JPS5228298A - Supervisory alarm unit by loop circuit system - Google Patents

Supervisory alarm unit by loop circuit system

Info

Publication number
JPS5228298A
JPS5228298A JP10463275A JP10463275A JPS5228298A JP S5228298 A JPS5228298 A JP S5228298A JP 10463275 A JP10463275 A JP 10463275A JP 10463275 A JP10463275 A JP 10463275A JP S5228298 A JPS5228298 A JP S5228298A
Authority
JP
Japan
Prior art keywords
loop circuit
circuit system
alarm unit
supervisory alarm
supervisory
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.)
Pending
Application number
JP10463275A
Other languages
Japanese (ja)
Inventor
Shunei Nakamura
Shinichi Ogura
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.)
Riken Keiki KK
Sumitomo Chemical Co Ltd
Original Assignee
Riken Keiki KK
Sumitomo Chemical Co Ltd
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 Riken Keiki KK, Sumitomo Chemical Co Ltd filed Critical Riken Keiki KK
Priority to JP10463275A priority Critical patent/JPS5228298A/en
Priority to GB3520576A priority patent/GB1556061A/en
Priority to GB1927177A priority patent/GB1556062A/en
Priority to BR7605636A priority patent/BR7605636A/en
Priority to CA259,928A priority patent/CA1083242A/en
Priority to DE19762638529 priority patent/DE2638529A1/en
Priority to MX486476U priority patent/MX3957E/en
Priority to IT5107176A priority patent/IT1066426B/en
Priority to NL7609588A priority patent/NL7609588A/en
Priority to FR7626025A priority patent/FR2322411A1/en
Publication of JPS5228298A publication Critical patent/JPS5228298A/en
Pending legal-status Critical Current

Links

Landscapes

  • Alarm Systems (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE: Early detection of the fault by bulding-in a multiplexer and an A/D converter in the terminal control box set in the supervisory section to convert the analog signal from the sensors divided into several gorups into the digital signal to input to the loop circuit.
COPYRIGHT: (C)1977,JPO&Japio
JP10463275A 1975-08-28 1975-08-28 Supervisory alarm unit by loop circuit system Pending JPS5228298A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP10463275A JPS5228298A (en) 1975-08-28 1975-08-28 Supervisory alarm unit by loop circuit system
GB3520576A GB1556061A (en) 1975-08-28 1976-08-24 Monitor and alarm apparatus in loop line system
GB1927177A GB1556062A (en) 1975-08-28 1976-08-24 Centralised monitoring system for gas leakage
BR7605636A BR7605636A (en) 1975-08-28 1976-08-26 PROCESS FOR MONITORING AND GIVING ALARM OF A DISASTER IN A CENTRALIZED MONITOR AREA AND SYSTEM AND PROCESS FOR DETERMINING GAS EXHAUST
CA259,928A CA1083242A (en) 1975-08-28 1976-08-26 Monitor and alarm apparatus in loop line system
DE19762638529 DE2638529A1 (en) 1975-08-28 1976-08-26 MONITORING AND ALARM METHODS AND DEVICE FOR ACCIDENT PREVENTION
MX486476U MX3957E (en) 1975-08-28 1976-08-27 IMPROVEMENTS IN ALARM SYSTEM AND MONITORING IN A LOOP CIRCUIT FOR GAS LEAKAGE
IT5107176A IT1066426B (en) 1975-08-28 1976-08-27 APPARATUS AND PROCEDURE FOR DISCOVERY AND SIGNALING OF DISASTERS
NL7609588A NL7609588A (en) 1975-08-28 1976-08-27 MONITORING AND ALARM DEVICE IN A RING-LINE SYSTEM.
FR7626025A FR2322411A1 (en) 1975-08-28 1976-08-27 CONTROL AND ALARM DEVICE IN A LOOP LINE INSTALLATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10463275A JPS5228298A (en) 1975-08-28 1975-08-28 Supervisory alarm unit by loop circuit system

Publications (1)

Publication Number Publication Date
JPS5228298A true JPS5228298A (en) 1977-03-03

Family

ID=14385810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10463275A Pending JPS5228298A (en) 1975-08-28 1975-08-28 Supervisory alarm unit by loop circuit system

Country Status (3)

Country Link
JP (1) JPS5228298A (en)
CA (1) CA1083242A (en)
MX (1) MX3957E (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144299A (en) * 1982-02-22 1983-08-27 日本電気株式会社 Security terminal
JPS61264835A (en) * 1985-05-17 1986-11-22 Kawamura Denki Sangyo Kk Optical fiber data link system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58144299A (en) * 1982-02-22 1983-08-27 日本電気株式会社 Security terminal
JPS61264835A (en) * 1985-05-17 1986-11-22 Kawamura Denki Sangyo Kk Optical fiber data link system

Also Published As

Publication number Publication date
CA1083242A (en) 1980-08-05
MX3957E (en) 1981-10-15

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