JPS575497A - Remote monitor and control system - Google Patents

Remote monitor and control system

Info

Publication number
JPS575497A
JPS575497A JP7899980A JP7899980A JPS575497A JP S575497 A JPS575497 A JP S575497A JP 7899980 A JP7899980 A JP 7899980A JP 7899980 A JP7899980 A JP 7899980A JP S575497 A JPS575497 A JP S575497A
Authority
JP
Japan
Prior art keywords
output
circuit
signal
control
selection signal
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
JP7899980A
Other languages
Japanese (ja)
Other versions
JPH0116078B2 (en
Inventor
Shinichi Okabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7899980A priority Critical patent/JPS575497A/en
Publication of JPS575497A publication Critical patent/JPS575497A/en
Publication of JPH0116078B2 publication Critical patent/JPH0116078B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/14—Calling by using pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To reduce the cost and to increase the reliability, by comparing a selection signal with the content set at a control system set circuit, and switching the pulse output and continuous output with a control output switching circuit according to the result of this comparison. CONSTITUTION:A selecting control signal 9 from a control station is received at a reception circuit 10, to pick up a selection signal 11 and a control signal 12. In a selection signal distribution circuit 13, an arbitrary selecting relay 17 is driven with the selection signal 11 to make input/output contact, open/output contact, and stop/ output contact. On the other hand, the control signal 12 of a constant mark code is decoded at a constant mark decoder 14 and either one of start/open/stop pulse signal is outputted from a control output switching circuit 30 via a timer circuit 15. The selection signal output 11 of said reception circuit 10 is compared with the content preset at a control system set circuit 28 at a comparison circuit 29, and if it is a continuous output, the pulse signal outputted from a timer 15 is locked to output a continuous signal.
JP7899980A 1980-06-13 1980-06-13 Remote monitor and control system Granted JPS575497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7899980A JPS575497A (en) 1980-06-13 1980-06-13 Remote monitor and control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7899980A JPS575497A (en) 1980-06-13 1980-06-13 Remote monitor and control system

Publications (2)

Publication Number Publication Date
JPS575497A true JPS575497A (en) 1982-01-12
JPH0116078B2 JPH0116078B2 (en) 1989-03-22

Family

ID=13677584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7899980A Granted JPS575497A (en) 1980-06-13 1980-06-13 Remote monitor and control system

Country Status (1)

Country Link
JP (1) JPS575497A (en)

Also Published As

Publication number Publication date
JPH0116078B2 (en) 1989-03-22

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