PROBLEM TO BE SOLVED: To improve crime prevention performance against relay attack without complicating a circuit configuration and signal processing.SOLUTION: An on-vehicle control device 10 comprises an on-vehicle transmitting unit 2 which transmits a first response request signal to a portable machine 20 with a carrier wave of a first frequency α and a second response request signal to the portable machine with a carrier wave of a second frequency β different from the first frequency α, and an on-vehicle receiving unit 3 which receives a response signal from the portable machine 20. The portable machine 20 comprises a portable machine receiving unit 22 which receives the first response request signal and the second response request signal, a reception intensity measuring unit 21a which measures each reception intensity of the first and second response request signals, and a portable machine transmitting unit 23 which transmits a response signal to the on-vehicle control device 10 according to reception of the first and second response request signals. The on-vehicle control device 10 further includes a position determining unit 1a which determines whether the portable machine 20 exists in a prescribed region with respect to the vehicle by comparing the difference between the reception intensities of the first and second response request signals with a prescribed threshold value.SELECTED DRAWING: Figure 1

    【課題】回路構成および信号処理を複雑にすることなく、リレーアタックに対する防犯性を向上させる。【解決手段】車載制御装置10は、携帯機20に対して、第1周波数αの搬送波で第1応答要求信号を送信し、かつ第1周波数αと異なる第2周波数βの搬送波で第2応答要求信号を送信する車載送信部2と、携帯機20から応答信号を受信する車載受信部3とを備える。携帯機20は、第1応答要求信号と第2応答要求信号を受信する携帯機受信部22と、第1および第2応答要求信号の各受信強度を測定する受信強度測定部21aと、第1および第2応答要求信号を受信したことに応じて、車載制御装置10に対して応答信号を送信する携帯機送信部23とを備える。さらに、車載制御装置10は、第1および第2応答要求信号の各受信強度の差と、所定の閾値とを比較することにより、携帯機20が車両に対して所定領域内にあるか否かを判定する位置判定部1aを備える。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    ON-VEHICLE EQUIPMENT CONTROL SYSTEM, ON-VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE


    Additional title:

    車載機器制御システム、車載制御装置、携帯機


    Contributors:

    Publication date :

    2016-12-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04Q Wähltechnik , SELECTING / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / E05B LOCKS , Schlösser



    ON-VEHICLE EQUIPMENT CONTROL SYSTEM, ON-VEHICLE CONTROL DEVICE AND PORTABLE MACHINE

    YOSHIZAWA DAISUKE | European Patent Office | 2017

    Free access

    VEHICLE CONTROL SYSTEM, VEHICLE CONTROL DEVICE AND PORTABLE MACHINE

    SAKAMOTO HIROKI / TANAKA YOSHIKI / OHATA HIROFUMI | European Patent Office | 2022

    Free access

    VEHICLE CONTROL SYSTEM, VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE

    ISHIKAWA RYUSUKE / OH SEUNGSEOK | European Patent Office | 2016

    Free access

    VEHICLE CONTROL DEVICE, CONTROL METHOD, PORTABLE MACHINE AND VEHICLE CONTROL SYSTEM

    TOMITA YOSUKE / SAWAMURA HIROKI | European Patent Office | 2021

    Free access

    ON-VEHICLE EQUIPMENT CONTROL SYSTEM, AND PORTABLE MACHINE

    OHATA HIROFUMI / MARUTA SHOGO / TOMITA YOSUKE | European Patent Office | 2017

    Free access