PROBLEM TO BE SOLVED: To provide a keyless entry system capable of suppressing shortening of the lifetime of a battery built in a portable machine by changing detection sensitivity according to the position of the portable machine.SOLUTION: There is provided a keyless entry system 100 that comprises an on-vehicle machine 10 and a portable machine 20 operating with its internal battery 19, and is configured to allow the on-vehicle machine 10 and portable machine 20 to communicate with each other by radio by sending a request signal from the on-vehicle machine 10 to the portable machine 20. The portable machine 20 can have first predetermined sensitivity and second sensitivity higher than the first sensitivity and having a wide detection area for the request signal set as detection sensitivity for detecting the request signal, and sets the detection sensitivity to the second sensitivity when it is determined that the portable machine 20 is present in the cabin 51 of a vehicle 50 or at a predetermined distance or less from the vehicle 50, and sets the detection sensitivity to the first sensitivity when it is determined that the portable machine 20 is not present or not to be present in the cabin 51 or at the predetermined distance from the vehicle 50.

    【課題】携帯機の位置に対応して検出感度を切り替え、携帯機に内蔵された電池の寿命低下を抑制することができるキーレスエントリーシステムを提供する。【解決手段】車載機10と、内蔵された電池19によって動作する携帯機20とからなり、車載機10から携帯機20にリクエスト信号を送信し、車載機10と携帯機20との間で無線通信を行うように構成されたキーレスエントリーシステム100であって、携帯機20は、リクエスト信号を検出するための検出感度として、所定の感度を有する第1感度と、第1感度よりも高い感度を有しリクエスト信号の検出領域が広い第2感度と、を設定可能であり、携帯機20が車両50の車室内51または車両50から所定距離以内に存在すると判断した時に検出感度を第2感度に設定し、携帯機20が車室内51又は車両50から所定距離以内に存在しないか存在しなくなると判断した時に検出感度を第1感度に設定する。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    KEYLESS ENTRY SYSTEM


    Additional title:

    キーレスエントリーシステム


    Contributors:

    Publication date :

    2015-06-22


    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 / H03J TUNING RESONANT CIRCUITS , Abstimmen von Resonanzkreisen [Tuner] / H04Q Wähltechnik , SELECTING




    KEYLESS ENTRY SYSTEM

    SEINO KATSUHIRO | European Patent Office | 2015

    Free access

    KEYLESS ENTRY SYSTEM

    MIYAZAWA AKIRA | European Patent Office | 2016

    Free access

    Keyless entry system

    WEI LIJIANG | European Patent Office | 2021

    Free access

    KEYLESS ENTRY SYSTEM

    KAMEYAMA YUUTO / FUNAYAMA TOMOYUKI / KAKINUMA SHOJI | European Patent Office | 2018

    Free access