PROBLEM TO BE SOLVED: To provide a keyless entry system which can improve accuracy in vehicle inside-outside determination of a portable machine.SOLUTION: There is provided a keyless entry system. A portable machine 10 includes: a triaxial gyro sensor 13 which detects inclination of the own machine; an intensity acquisition unit 111 which acquires the triaxial signal intensity obtained by receiving a request signal Srq by a 3D antenna unit 12; and a transmission unit 112 which outputs an answer signal San containing signal intensity information and inclination information of the own machine with respect to the request signal Srq. An on-vehicle machine 20 includes: a vehicle inside-outside determination unit 211 which determines whether the position of the portable machine 10 is inside of the vehicle or outside (OUT) of the vehicle on the basis of the magnitude relation between the signal intensity and the intensity threshold; a direction estimation unit 214 which estimates the direction where the portable machine 10 is located on the basis of the inclination of the portable machine 10 and the direction of the signal intensity; and a threshold setting unit 212 which sets the intensity threshold in accordance with the direction where the portable machine 10 is located with respect to an LF antenna 221.SELECTED DRAWING: Figure 1

    【課題】携帯機の車内外判定精度を向上可能なキーレスエントリシステムを提供すること。【解決手段】携帯機10は、自機の傾きを検出する3軸ジャイロセンサ13と、リクエスト信号Srqを3Dアンテナユニット12で受信して得られた3軸の信号強度を求める強度取得部111と、リクエスト信号Srqに対し、信号強度情報および自機の傾き情報を含むアンサー信号Sanを出力する送信部112と、を備え、車載機20は、信号強度と強度閾値との大小関係に基づいて、携帯機10の位置が車内か車外OUTかを判定する車内外判定部211と、携帯機10の傾きと信号強度の方向とに基づいて携帯機10が位置する方向を推定する方向推定部214と、LFアンテナ221に対する携帯機10が位置する方向に応じ、強度閾値を設定する閾値設定部212と、を備えることを特徴とするキーレスエントリシステムとした。【選択図】図1


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    Title :

    KEYLESS ENTRY SYSTEM AND VEHICLE INSIDE-OUTSIDE DETERMINATION METHOD


    Additional title:

    キーレスエントリシステムおよび車内外判定方法


    Contributors:

    Publication date :

    2018-02-08


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E05B LOCKS , Schlösser / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / G01S RADIO DIRECTION-FINDING , Funkpeilung





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    Free access