To solve the problem that it is difficult to adjust a transmission level due to a change in a target current because an antenna characteristic is changed to change a relation between an antenna current and an electric power amount of a power wave per turn of antenna in the case of transmitting a power wave of different frequency by changing the number of turns of a power wave transmission antenna.SOLUTION: An on-vehicle communication device includes: a power wave transmission antenna having the fixed number of turns to transmit a power wave to a ground unit; a resonance circuit group for constituting two or more series circuit from two or more resonance capacitors and two or more resonance inductors to be connected to the power wave transmission antenna; a switching part for selectively switching any one series circuit from the two or more series circuits on the basis of a switching command; a frequency selection part for outputting a switching command and selecting, as a frequency of the power wave, a frequency that is coincided with a resonance frequency determined by one series circuit switched on the basis of the switching command and the power wave transmission antenna; and a power wave generation part for outputting a power wave of the frequency selected by the frequency selection part.SELECTED DRAWING: Figure 1

    【課題】電力波送信アンテナの巻き数を変化させて異なる周波数の電力波を送信する場合、アンテナの特性が変化し、アンテナ1ターンあたりのアンテナ電流と電力波の電力量との関係が変化することから、目標電流が変化し送信レベルの調整が難しくなる。【解決手段】車上通信装置は、固定巻き数を有し地上子に対して電力波を送信する電力波送信アンテナと、2つ以上の共振コンデンサおよび2つ以上の共振インダクタンスから2つ以上の直列回路を構成して電力波送信アンテナに接続する共振回路群と、切替指令に基づいて2つ以上の直列回路からいずれか1つの直列回路を選択して切り替える切替部と、切替指令を出力すると共に当該切替指令に基づいて切り替わった1つの直列回路と電力波送信アンテナにより決まる共振周波数と一致する周波数を電力波の周波数として選択する周波数選択部と、周波数選択部が選択した周波数の電力波を出力する電力波生成部とを備える。【選択図】図1


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    Titel :

    ON-VEHICLE COMMUNICATION DEVICE, ON-VEHICLE COMMUNICATION SYSTEM AND VEHICLE WITH ON-VEHICLE COMMUNICATION DEVICE MOUNTED THEREON


    Weitere Titelangaben:

    車上通信装置、車上通信システムおよび車上通信装置を搭載した車両


    Beteiligte:

    Erscheinungsdatum :

    2019-01-10


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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