POWER LINE COMMUNICATION APPARATUS AND OPERATION METHOD THEREOF

PROBLEM TO BE SOLVED: To provide a charging device for electric automobile that can effectively transmit a data signal with higher reliability.SOLUTION: A power line communication apparatus for electric automobile connected to a charging device for electric automobile through a power line includes: a noise measurement part which applies a first voltage signal to the charging device for electric automobile through the power line, receives a second voltage signal output from the charging device for electric automobile in response to the first voltage signal, and generates noise information including information associated with a result of comparison of the output first voltage signal with the received second voltage signal; a signal reduction correction part which receives a plurality of power line signals from the charging device for electric automobile and generates signal reduction information based upon the generated noise information and the plurality of received power line signals; and a communication modem which performs communication exchange with the charging device for electric automobile based upon the generated signal reduction information. 【課題】本発明は、データ信号をより信頼性が高く効果的に伝送することができる電気自動車用充電装置を提供することを目的とする。【解決手段】本発明の電気自動車用充電装置と電力線を介して連結された電気自動車の電力線通信装置は、前記電力線を介して前記電気自動車用充電装置に第１電圧信号を印加し、前記第１電圧信号に応答して前記電気自動車用充電装置から出力される第２電圧信号を受信し、前記受信した第２電圧信号と前記出力された第１電圧信号を比較した結果に関する情報を含む雑音情報を生成する雑音測定部と、前記電気自動車用充電装置から複数の電力線信号を受信し、前記生成した雑音情報及び前記受信した複数の電力線信号に基づいて信号減殺情報を生成する信号減殺補正部と、前記生成した信号減殺情報に基づいて前記電気自動車用充電装置と通信交換を行う通信モデムを含む。【選択図】図３