To provide an on-vehicle device, transmission method, and computer program, capable of implementing a configuration providing a reception range in which reception strength of a signal is equal to or higher than given strength, the reception range including a predetermined range regardless of an angle between a vehicle component and a vehicle body.SOLUTION: A left mirror housing is attached to a vehicle body and rotates with respect to the vehicle body. An on-vehicle device 2 has a left transmission antenna Tf housed in the left mirror housing. In the left transmission antenna Tf are arranged a plurality of coils having axial directions differing from each other. A radio transmission unit 20 applies AC voltage to each of the plurality of coils to transmit the signal by radio. Depending on an angle between the vehicle body and a vehicle component, a control unit 37 determines a phase difference or amplitude ratio between two AC voltages of a plurality of AC voltages to be applied to the plurality of coils.SELECTED DRAWING: Figure 2
【課題】信号の受信強度が一定強度以上である受信範囲が、車両部品と車体とがなす角度に無関係に所定範囲を含む構成を実現することができる車載装置、送信方法及びコンピュータプログラムを提供する。【解決手段】左ミラー収容体は、車体に取付けられ、車体に対して回動する。車載装置2では、左送信アンテナTfは、左ミラー収容体に収容されている。左送信アンテナTfでは、複数のコイルが配置されており、複数のコイルの軸方向は相互に異なる。無線送信部20は、複数のコイル夫々に交流電圧を印加することによって、信号を無線で送信する。制御部37は、複数のコイルに印加する複数の交流電圧中の2つの交流電圧の位相差又は振幅比を、車体と車両部品とがなす角度に応じて決定する。【選択図】図2
ON-VEHICLE DEVICE, TRANSMISSION METHOD, AND COMPUTER PROGRAM
車載装置、送信方法及びコンピュータプログラム
2019-09-26
Patent
Electronic Resource
Japanese
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