| 摘要 |
PURPOSE: A bidirectional analog power line communication relay is provided to improve the transmission speed of power line by reducing delay time due to signal conversion and reduce costs due to simple structure. CONSTITUTION: The bidirectional analog power line communication relay comprises: band pass filters(2A,2B) connected to both ends of a signal separating filter(6) and filtering analog communication information signal inputted from power lines(1A,1B); analog switches(3A,3B) switching the communication information signal filtered by the band pass filters(2A,2B); power line communication amplifiers(4A,4B) amplifying the communication information signal inputted through the switches(3A,3B) and outputting it to the power line; and a control logic(5) determining the size of the filtered communication information signal and controlling the operation of the analog switches(3A,3B).
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