JPS57125550A - Data collecting system - Google Patents

Data collecting system

Info

Publication number
JPS57125550A
JPS57125550A JP1205781A JP1205781A JPS57125550A JP S57125550 A JPS57125550 A JP S57125550A JP 1205781 A JP1205781 A JP 1205781A JP 1205781 A JP1205781 A JP 1205781A JP S57125550 A JPS57125550 A JP S57125550A
Authority
JP
Japan
Prior art keywords
data
timer
transmission
given
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
JP1205781A
Other languages
Japanese (ja)
Other versions
JPH0123017B2 (en
Inventor
Masaru Miyazaki
Takahiro Sasaki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP1205781A priority Critical patent/JPS57125550A/en
Publication of JPS57125550A publication Critical patent/JPS57125550A/en
Publication of JPH0123017B2 publication Critical patent/JPH0123017B2/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

Landscapes

  • Small-Scale Networks (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To decrease the data collection time and to prevent crosstalk, by giving functions of carrier detection and address discrimination of preceding stations to slave devices. CONSTITUTION:When a simultaneous callout data from a transmission line enters a reception section 2 via a terminal 6, a timer start signal is outputted from the section 2 to a transmission start timer 4 to start the timer. When simultaneous callout data or transmission data from other slave devices are received, the data are given to a preceding station address detector 8 from the reception section 2 and a carrier detector 9 is activated. When the data are given to the detector 8, a discrimination signal of the address of a slave station before by one from the transmission order assigned to the station itself with the address discrimination is outputted, and when no carrier is present and a signal carrier interruption is give, a transmission start signal is given to a transmission section 1 with an AND circuit 10 and a timer cancell signal is given to the timer 4.
JP1205781A 1981-01-29 1981-01-29 Data collecting system Granted JPS57125550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1205781A JPS57125550A (en) 1981-01-29 1981-01-29 Data collecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1205781A JPS57125550A (en) 1981-01-29 1981-01-29 Data collecting system

Publications (2)

Publication Number Publication Date
JPS57125550A true JPS57125550A (en) 1982-08-04
JPH0123017B2 JPH0123017B2 (en) 1989-04-28

Family

ID=11794966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1205781A Granted JPS57125550A (en) 1981-01-29 1981-01-29 Data collecting system

Country Status (1)

Country Link
JP (1) JPS57125550A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130941A (en) * 1983-12-20 1985-07-12 Agency Of Ind Science & Technol Network of computer
JPS6235732A (en) * 1985-08-08 1987-02-16 Nec Corp Satellite communication monitor system
JPS62181056U (en) * 1986-05-07 1987-11-17
JPH03151739A (en) * 1989-11-09 1991-06-27 Hitachi Ltd Information transmission method and system
JPH04145746A (en) * 1990-10-08 1992-05-19 Nec Corp Satellite line access system for data packet
JPH05328449A (en) * 1992-05-20 1993-12-10 Nec Corp Automatic metering system utilizing catv line
WO2005027374A1 (en) * 2003-09-12 2005-03-24 Matsushita Electric Industrial Co., Ltd. Radio communication method and radio communication terminal accommodating apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS537352A (en) * 1976-07-09 1978-01-23 Mitsubishi Electric Corp Data collection system in digital telemeter system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS537352A (en) * 1976-07-09 1978-01-23 Mitsubishi Electric Corp Data collection system in digital telemeter system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60130941A (en) * 1983-12-20 1985-07-12 Agency Of Ind Science & Technol Network of computer
JPS6235732A (en) * 1985-08-08 1987-02-16 Nec Corp Satellite communication monitor system
JPS62181056U (en) * 1986-05-07 1987-11-17
JPH03151739A (en) * 1989-11-09 1991-06-27 Hitachi Ltd Information transmission method and system
JPH04145746A (en) * 1990-10-08 1992-05-19 Nec Corp Satellite line access system for data packet
JPH05328449A (en) * 1992-05-20 1993-12-10 Nec Corp Automatic metering system utilizing catv line
WO2005027374A1 (en) * 2003-09-12 2005-03-24 Matsushita Electric Industrial Co., Ltd. Radio communication method and radio communication terminal accommodating apparatus
US8515438B2 (en) 2003-09-12 2013-08-20 Panasonic Corporation Radio communication method and radio communication terminal accommodating apparatus

Also Published As

Publication number Publication date
JPH0123017B2 (en) 1989-04-28

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