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JPS5574246A - Signal delivery system - Google Patents

Signal delivery system

Info

Publication number
JPS5574246A
JPS5574246A JP14764078A JP14764078A JPS5574246A JP S5574246 A JPS5574246 A JP S5574246A JP 14764078 A JP14764078 A JP 14764078A JP 14764078 A JP14764078 A JP 14764078A JP S5574246 A JPS5574246 A JP S5574246A
Authority
JP
Japan
Prior art keywords
signal
master
slave unit
voltage
unit
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
JP14764078A
Other languages
Japanese (ja)
Other versions
JPS6214971B2 (en
Inventor
Muneo Suzuki
Hitoshi Ikeda
Takeyoshi Kawamura
Yoshiharu Suzuki
Kazuhiko Mori
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP14764078A priority Critical patent/JPS5574246A/en
Publication of JPS5574246A publication Critical patent/JPS5574246A/en
Publication of JPS6214971B2 publication Critical patent/JPS6214971B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5458—Monitor sensor; Alarm systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To enable normal signal delivery, if emergency power supply is used for the master and slave units constituting alarm unit in case of power failure and disconnection, by supplying power from master to slave unit and enabling signal transmission between the master and slave unit. CONSTITUTION:Two lines are connected between the master 1 and slave unit 2 located at remote place. Power is delivered to the slave unit 2 with DC intermittent voltage intermitting DC voltage with a given period from the master unit 1, and the signal having the frequency in different period than the intermittent voltage of the DC intermitent voltage. In this case, the start signal So is superimposed on the DC intermittent voltage and the transmission of signal is identified through the reception of the slave unit 2. The DC intermittent voltage succeeding to this signal So is determined sequentially as the first... Nth channel and signal is transmitted by superimposing on each channel signals S1...SN.
JP14764078A 1978-11-29 1978-11-29 Signal delivery system Granted JPS5574246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14764078A JPS5574246A (en) 1978-11-29 1978-11-29 Signal delivery system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14764078A JPS5574246A (en) 1978-11-29 1978-11-29 Signal delivery system

Publications (2)

Publication Number Publication Date
JPS5574246A true JPS5574246A (en) 1980-06-04
JPS6214971B2 JPS6214971B2 (en) 1987-04-04

Family

ID=15434898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14764078A Granted JPS5574246A (en) 1978-11-29 1978-11-29 Signal delivery system

Country Status (1)

Country Link
JP (1) JPS5574246A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115945A (en) * 1981-12-29 1983-07-09 Toyoda Gosei Co Ltd Power transmission and signal transmission and reception method to steering section
JPS58179038A (en) * 1982-04-14 1983-10-20 Matsushita Electric Ind Co Ltd Time division multiplex transmitting system
JPS6050584U (en) * 1983-09-13 1985-04-09 日立化成工業株式会社 2-wire remote control device
JPS61147512A (en) * 1984-12-20 1986-07-05 Tohoku Oki Denki Kk Electromagnet drive system
JPS6221339A (en) * 1985-07-19 1987-01-29 Oki Electric Ind Co Ltd Control signal transmission system
JPS6258172A (en) * 1985-09-06 1987-03-13 Noritsu Co Ltd Method for detecting shortcircuit of signal transmission line
JPH0263227A (en) * 1988-08-29 1990-03-02 Rinnai Corp Communication equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338917A (en) * 1976-09-22 1978-04-10 Hitachi Ltd Information transmission system
JPS5372411A (en) * 1976-12-09 1978-06-27 Hokuriku Electric Power Co Inc:The Signal transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5338917A (en) * 1976-09-22 1978-04-10 Hitachi Ltd Information transmission system
JPS5372411A (en) * 1976-12-09 1978-06-27 Hokuriku Electric Power Co Inc:The Signal transmission system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58115945A (en) * 1981-12-29 1983-07-09 Toyoda Gosei Co Ltd Power transmission and signal transmission and reception method to steering section
JPS58179038A (en) * 1982-04-14 1983-10-20 Matsushita Electric Ind Co Ltd Time division multiplex transmitting system
JPS6050584U (en) * 1983-09-13 1985-04-09 日立化成工業株式会社 2-wire remote control device
JPH0119504Y2 (en) * 1983-09-13 1989-06-06
JPS61147512A (en) * 1984-12-20 1986-07-05 Tohoku Oki Denki Kk Electromagnet drive system
JPS6221339A (en) * 1985-07-19 1987-01-29 Oki Electric Ind Co Ltd Control signal transmission system
JPS6258172A (en) * 1985-09-06 1987-03-13 Noritsu Co Ltd Method for detecting shortcircuit of signal transmission line
JPH0263227A (en) * 1988-08-29 1990-03-02 Rinnai Corp Communication equipment

Also Published As

Publication number Publication date
JPS6214971B2 (en) 1987-04-04

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