JPS56102144A - Remote monitoring equipment - Google Patents

Remote monitoring equipment

Info

Publication number
JPS56102144A
JPS56102144A JP347380A JP347380A JPS56102144A JP S56102144 A JPS56102144 A JP S56102144A JP 347380 A JP347380 A JP 347380A JP 347380 A JP347380 A JP 347380A JP S56102144 A JPS56102144 A JP S56102144A
Authority
JP
Japan
Prior art keywords
terminal station
timing
information
transmits
indicating 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
JP347380A
Other languages
Japanese (ja)
Inventor
Yoshihito Oota
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP347380A priority Critical patent/JPS56102144A/en
Publication of JPS56102144A publication Critical patent/JPS56102144A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To make it possible to eliminate calling time and acknowledge time and to perform efficient transmissions, by sending transmission indicating signals by successively selecting from the master station to a terminal station and by sending the same information cyclically for a period within which the indicating signal continues, to the master station. CONSTITUTION:A remote communication system is composed of one master station receiver 1 and a plural number of terminal station equipments 4-1-4-n using a double channel. With such equipment 1 information from terminal station equipments 4-1-4-n is received by performing change-over of transmission line 3 successively. Equipment 1 selects terminal station equipments 4-1-4-n successively and transmits the transmission indicating signal at transmitting timing (a) or (c) of the master station. Upon receiving this transmission indicating signal, terminal station equipments 4-1-4-n transmits the information at timing (b) or (d) of the terminal station, and, when equipment 1 receives the information and detects and error, it continuously transmits the transmission indicating signal as timing (c), and the terminal station repeatedly transmits the same information as timing (d).
JP347380A 1980-01-18 1980-01-18 Remote monitoring equipment Pending JPS56102144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP347380A JPS56102144A (en) 1980-01-18 1980-01-18 Remote monitoring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP347380A JPS56102144A (en) 1980-01-18 1980-01-18 Remote monitoring equipment

Publications (1)

Publication Number Publication Date
JPS56102144A true JPS56102144A (en) 1981-08-15

Family

ID=11558292

Family Applications (1)

Application Number Title Priority Date Filing Date
JP347380A Pending JPS56102144A (en) 1980-01-18 1980-01-18 Remote monitoring equipment

Country Status (1)

Country Link
JP (1) JPS56102144A (en)

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