JPS568936A - Supervisory system for fault of transmission line - Google Patents

Supervisory system for fault of transmission line

Info

Publication number
JPS568936A
JPS568936A JP8349779A JP8349779A JPS568936A JP S568936 A JPS568936 A JP S568936A JP 8349779 A JP8349779 A JP 8349779A JP 8349779 A JP8349779 A JP 8349779A JP S568936 A JPS568936 A JP S568936A
Authority
JP
Japan
Prior art keywords
electric power
receiving terminal
sent
unit
abnormality
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
JP8349779A
Other languages
Japanese (ja)
Other versions
JPS6011856B2 (en
Inventor
Yoshihiko Miyano
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 JP54083497A priority Critical patent/JPS6011856B2/en
Publication of JPS568936A publication Critical patent/JPS568936A/en
Publication of JPS6011856B2 publication Critical patent/JPS6011856B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To prevent a receiving terminal unit from generating an error alarm by providing a unit that exercises a supervision over the abnormality of the receiving terminal unit. CONSTITUTION:In case that an electric power source on a receiving terminal side becomes abnormal and signals can not be sent back to a transmitting terminal side normally, relay 11 detects the abnormality of the electric power source and sent- back signal generator 9 is put into operation by electric power from electric power source 5 that feeds electric power to repeater 4 on the transmission side. Therefore, whdn a transmission line is normal, the transmitting terminal side can receive the normal sent-back signal. As a substitute for the normal sent-back signal, a signal reporting the abnormality of the receiving terminal may be sent out of the receiving terminal side to put alarm unit 7 into operation.
JP54083497A 1979-07-03 1979-07-03 Transmission path failure monitoring method Expired JPS6011856B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54083497A JPS6011856B2 (en) 1979-07-03 1979-07-03 Transmission path failure monitoring method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083497A JPS6011856B2 (en) 1979-07-03 1979-07-03 Transmission path failure monitoring method

Publications (2)

Publication Number Publication Date
JPS568936A true JPS568936A (en) 1981-01-29
JPS6011856B2 JPS6011856B2 (en) 1985-03-28

Family

ID=13804107

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54083497A Expired JPS6011856B2 (en) 1979-07-03 1979-07-03 Transmission path failure monitoring method

Country Status (1)

Country Link
JP (1) JPS6011856B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10607589B2 (en) 2016-11-29 2020-03-31 Milliken & Company Nonwoven composite
CN110969265A (en) * 2019-12-04 2020-04-07 国网河南省电力公司南阳供电公司 Power transmission line supervision method and device and computer readable storage medium

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6226160A (en) * 1985-07-26 1987-02-04 Toyoda Gosei Co Ltd Horn switch of steering wheel
JPS62105867U (en) * 1985-12-25 1987-07-06
JPS62216864A (en) * 1986-03-18 1987-09-24 Nippon Plast Co Ltd Steering wheel
JPH0637054U (en) * 1992-10-23 1994-05-17 豊田合成株式会社 Steering wheel pad mounting structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10607589B2 (en) 2016-11-29 2020-03-31 Milliken & Company Nonwoven composite
CN110969265A (en) * 2019-12-04 2020-04-07 国网河南省电力公司南阳供电公司 Power transmission line supervision method and device and computer readable storage medium

Also Published As

Publication number Publication date
JPS6011856B2 (en) 1985-03-28

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