JPS5531393A - Remote supervisory system - Google Patents

Remote supervisory system

Info

Publication number
JPS5531393A
JPS5531393A JP10583378A JP10583378A JPS5531393A JP S5531393 A JPS5531393 A JP S5531393A JP 10583378 A JP10583378 A JP 10583378A JP 10583378 A JP10583378 A JP 10583378A JP S5531393 A JPS5531393 A JP S5531393A
Authority
JP
Japan
Prior art keywords
supervised
station
supervisory
circuit
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.)
Pending
Application number
JP10583378A
Other languages
Japanese (ja)
Inventor
Takeshi Sumita
Toyoaki Inoue
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10583378A priority Critical patent/JPS5531393A/en
Publication of JPS5531393A publication Critical patent/JPS5531393A/en
Pending 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

Abstract

PURPOSE:To enable even a supervised station to exercise a supervision over other supervised stations by providing the supervised unit with a monitor circuit which receives a calling signal from a supervisory station and an answer signal from another supervised station. CONSTITUTION:A calling signal from a supervisory station, inputted to a supervised unit, is decoded by decoder 11 and decoding logic circuit 13 and the decoded signal is stored in station commentary circuit 17. Next, the answer signal of the supervised station to a call from the supervisory station is decoded by circuit 13 and the decoded signal is coded by supervised-information coding circuit 18. By those two pieces of information, the supervised station can be supervised by an associate supervisory station as well as the supervisory station. Consequently, several supervised stations can be supervised by several stations by using one carrier without increasing supervisory units in number and each supervised station requires only one demodulator 11 and modulator 12, so that the reduction in cost and miniaturization of the unit can be realized.
JP10583378A 1978-08-29 1978-08-29 Remote supervisory system Pending JPS5531393A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10583378A JPS5531393A (en) 1978-08-29 1978-08-29 Remote supervisory system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10583378A JPS5531393A (en) 1978-08-29 1978-08-29 Remote supervisory system

Publications (1)

Publication Number Publication Date
JPS5531393A true JPS5531393A (en) 1980-03-05

Family

ID=14418036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10583378A Pending JPS5531393A (en) 1978-08-29 1978-08-29 Remote supervisory system

Country Status (1)

Country Link
JP (1) JPS5531393A (en)

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