JPS5555646A - Failure detection system for remote monitor system - Google Patents

Failure detection system for remote monitor system

Info

Publication number
JPS5555646A
JPS5555646A JP12931178A JP12931178A JPS5555646A JP S5555646 A JPS5555646 A JP S5555646A JP 12931178 A JP12931178 A JP 12931178A JP 12931178 A JP12931178 A JP 12931178A JP S5555646 A JPS5555646 A JP S5555646A
Authority
JP
Japan
Prior art keywords
unit
signal
power supply
failure
output
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
JP12931178A
Other languages
Japanese (ja)
Inventor
Shozo Yabe
Seiichi Kawasugi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12931178A priority Critical patent/JPS5555646A/en
Publication of JPS5555646A publication Critical patent/JPS5555646A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation

Landscapes

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

Abstract

PURPOSE:To ensure the detection of faulure, by detecting that the output of transmission unit of reception unit is contiunously 1 or 0 through the input to the transmission unit of the signal transmission unit made continuously 1 or 0 at power supply interruption and other failure. CONSTITUTION:Normally, the input signal S1 is converted A into required data, is inputted to the unit B through the selector, and after modulation, it is transmitted via the interface L1. The data is demodulated at the signal transmission unit C via the interface L2 of the receiver M and converted E into required signal S2. In case of transmission line open, ''0'' is continuously inputted to the signal tranmission unit B and the output of the unit C is a continuity of ''0'', and it is detected at the unit F to produce failure signal S3. At the interruption of power supply, the selector is operated, the battery P in inserted, the input to the unit B is continuously ''1'' and the output of the unit C is also continuity of ''1''. The continuous ''1'' signal is detected at the power supply interruption G to produce the power supply interruption signal S4. Thus, the failure in transmission side can monitored at remote location.
JP12931178A 1978-10-20 1978-10-20 Failure detection system for remote monitor system Pending JPS5555646A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12931178A JPS5555646A (en) 1978-10-20 1978-10-20 Failure detection system for remote monitor system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12931178A JPS5555646A (en) 1978-10-20 1978-10-20 Failure detection system for remote monitor system

Publications (1)

Publication Number Publication Date
JPS5555646A true JPS5555646A (en) 1980-04-23

Family

ID=15006424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12931178A Pending JPS5555646A (en) 1978-10-20 1978-10-20 Failure detection system for remote monitor system

Country Status (1)

Country Link
JP (1) JPS5555646A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57193159A (en) * 1981-05-23 1982-11-27 Meidensha Electric Mfg Co Ltd Information transmitting device
JPS5860855A (en) * 1981-10-06 1983-04-11 Nec Corp Two-wire current interface circuit
JPS6086931A (en) * 1983-10-18 1985-05-16 Meisei Electric Co Ltd Monitor information transmission system of electric power equipment
JPS6180930A (en) * 1984-09-28 1986-04-24 Hitachi Ltd DC transmission equipment with power failure detection function
JPH0353057U (en) * 1989-09-27 1991-05-22

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52110510A (en) * 1976-03-15 1977-09-16 Hitachi Ltd Transmission data driving circuit with power observation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52110510A (en) * 1976-03-15 1977-09-16 Hitachi Ltd Transmission data driving circuit with power observation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57193159A (en) * 1981-05-23 1982-11-27 Meidensha Electric Mfg Co Ltd Information transmitting device
JPS5860855A (en) * 1981-10-06 1983-04-11 Nec Corp Two-wire current interface circuit
JPS6086931A (en) * 1983-10-18 1985-05-16 Meisei Electric Co Ltd Monitor information transmission system of electric power equipment
JPS6180930A (en) * 1984-09-28 1986-04-24 Hitachi Ltd DC transmission equipment with power failure detection function
JPH0353057U (en) * 1989-09-27 1991-05-22

Similar Documents

Publication Publication Date Title
DE3278376D1 (en) A locality supervision system
JPS5555646A (en) Failure detection system for remote monitor system
JPS57173245A (en) Data transmission system
JPS5539451A (en) Fault detection system for remote monitor control device
JPS573153A (en) Fault detection system
JPS5566192A (en) Remote control unit
JPS5621443A (en) Transmission unit
JPS5769956A (en) Remote monitor device
JPS57193159A (en) Information transmitting device
JPS5441002A (en) Data signal control system
JPS52154981A (en) Remote monitoring control system
JPS5739656A (en) Detection system for open subscriber line
JPS54156146A (en) Indoor power line carrier system
JPS5721143A (en) Signal transmitter
JPS562763A (en) Data gathering system
JPS5799059A (en) Remote monitoring device
JPS5787264A (en) Line monitoring system for high-level transmission control procedure
JPS5575355A (en) Signal monitor system
JPS5644278A (en) Video signal transmission line supervisory system
JPS5427307A (en) Repeating installation
JPS57112170A (en) System for identifying telephone reservation
JPS57125595A (en) Remote monitor control system
JPS57160236A (en) Multiple transmission system for vehicle
JPS54116589A (en) Remote supervisory equipment
JPS57121344A (en) Transmission system alarm indication signal