| 摘要 |
PURPOSE: A power line communication system is provided which can transmit/receive data using a power line constructed in a general road or building, therefore it is needless to construct an additional communication line and the construction cost is very low and the reliability as to the performance of a product is further improved by reducing the error rate of transmitted/received data. CONSTITUTION: A power line communication system comprises: a line coupler(1) which transmits/receives data through a power line, comprising a first coil(L1) connected with the power line and a second coil(L2) transmitting or receiving data through the first coil; a current amplification part(2) performing current amplification of the transmitted data and supplying it to the line coupler; a digital modulation part(3) modulating the transmitted data to a high frequency analog signal and outputting it to the current amplification part; a digital demodulation part(4) demodulating the analog data received through the line coupler to a digital signal; a micro controller(5) which encodes data to transmit and supplies the encoded data to the digital modulation part, and recovers by decoding the received data inputted through the digital demodulation part with an FEC method, and controls an object according to the recovered information; a memory(6) where an operation program of the micro controller is stored and which stores the received data inputted from the micro controller; and a power supply part(7) receiving the power flowing in the power line and supplying it as a driving power of each component.
|
