JPS57155844A - Power line carrier wave device - Google Patents

Power line carrier wave device

Info

Publication number
JPS57155844A
JPS57155844A JP4114181A JP4114181A JPS57155844A JP S57155844 A JPS57155844 A JP S57155844A JP 4114181 A JP4114181 A JP 4114181A JP 4114181 A JP4114181 A JP 4114181A JP S57155844 A JPS57155844 A JP S57155844A
Authority
JP
Japan
Prior art keywords
signal
high frequency
circuit
stored
power line
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
JP4114181A
Other languages
Japanese (ja)
Inventor
Yoichi Isobe
Kazuyoshi Honda
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 JP4114181A priority Critical patent/JPS57155844A/en
Publication of JPS57155844A publication Critical patent/JPS57155844A/en
Pending 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
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To avoid malfunction due to noise, by detecting the presence or absence of a signal based on a high frequency noise in a steady-state. CONSTITUTION:A high frequency component superimposed on a power line 5 is detected at a detection circuit 1, and a high frequency noise always detected at non-signal state is stored in a storage circuit 6. A signal stored at the storage circuit 6 and a signal detected at the detection circuit 1 are compared at a comparison circuit 7, and if an output signal of the detection circuit 1 is different from the signal to be stored, an output signal with the presence of the high frequency signal is generated. A switching circuit 9 driving a load turns on or off with this output signal. Thus, the load can be controlled without malfunction, even if a consecutive high frequency noise of the same phase from devices such as a dimmer and a charger takes place.
JP4114181A 1981-03-20 1981-03-20 Power line carrier wave device Pending JPS57155844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4114181A JPS57155844A (en) 1981-03-20 1981-03-20 Power line carrier wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4114181A JPS57155844A (en) 1981-03-20 1981-03-20 Power line carrier wave device

Publications (1)

Publication Number Publication Date
JPS57155844A true JPS57155844A (en) 1982-09-27

Family

ID=12600141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4114181A Pending JPS57155844A (en) 1981-03-20 1981-03-20 Power line carrier wave device

Country Status (1)

Country Link
JP (1) JPS57155844A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218052A (en) * 1983-05-26 1984-12-08 Osaki Denki Kogyo Kk Phase pulse signal carrying method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218052A (en) * 1983-05-26 1984-12-08 Osaki Denki Kogyo Kk Phase pulse signal carrying method
JPH0120573B2 (en) * 1983-05-26 1989-04-17 Osaki Electric Co Ltd

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