To reduce the number of wiring of an electric circuit for detecting an operation of a user, and to shorten processing time.SOLUTION: An LF transmission antenna device 3 comprises: LF antennae 12d and 12p having a coil L wound around a core; a drive part 13 that supplies an electric current to the LF antennae 12d and 12p to make the LF antennae 12d and 12p transmit an LF signal; an operation part operated by the user; an operation detection part 17 that detects the operation of the operation part; and an electric current detection part 15 that detects the electric current flowing through the LF antennae 12d and 12p. The operation part is provided near the coil L. When operated by the user, the operation part is displaced such that a gap between itself and the coil L changes, thereby changing the electric current flowing through the LF antennae 12d and 12p. The operation detection part 17 detects the operation of the operation part based on a detection result of the electric current of the LF antennae 12d and 12p detected by the electric current detection part 15.SELECTED DRAWING: Figure 2
【課題】使用者の操作を検知するための電気回路の配線数の減少と、処理時間の短縮とを実現する。【解決手段】LF送信用アンテナ装置3は、コアに巻回されたコイルLを有するLFアンテナ12d、12pと、このLFアンテナ12d、12pに電流を供給して、LFアンテナ12d、12pからLF信号を送信させる駆動部13と、使用者により操作される操作部と、操作部の操作を検知する操作検知部17と、LFアンテナ12d、12pに流れる電流を検出する電流検出部15とを備える。操作部は、コイルLの近傍に設けられていて、使用者により操作されることでコイルLとの間隔が変化するように変位して、LFアンテナ12d、12pに流れる電流を変化させる。操作検知部17は、電流検出部15によるLFアンテナ12d、12pの電流の検出結果に基づいて操作部の操作を検知する。【選択図】図2
ANTENNA DEVICE, DOOR HANDLE DEVICE, VEHICLE CONTROL DEVICE AND VEHICLE CONTROL SYSTEM
アンテナ装置、ドアハンドル装置、車両制御装置、車両制御システム
2020-08-31
Patent
Electronic Resource
Japanese
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