To provide a position estimation system for a vehicle and a position estimation device for the vehicle capable of estimating a terminal position precisely while suppressing an increase in price.SOLUTION: A vehicle-side device transmits a radio signal in sequence from LF transmission antennas 32 disposed at plural places of a vehicle. A portable terminal returns a response signal for indicating reception strength of a signal each time when receiving the signal from the vehicle. A response acquisition part F2 of the vehicle-side device acquires reception strength for each of the LF transmission antennas 32 on the basis of a response signal from the portable terminal. An area location part F3 locates a candidate area in which a portable terminal 2 can exist on the basis of reception strength for each antenna. A position estimation part F4 calculates an error evaluation value for a candidate point positioned within the candidate area in a search area and determines a terminal position.SELECTED DRAWING: Figure 4

    【課題】価格の上昇を抑制しつつ、より高精度に端末位置を推定可能な車両用位置推定システム、及び車両用位置推定装置を提供する。【解決手段】車両側装置は、車両の複数箇所に配置されているLF送信アンテナ32から順に無線信号を送信する。携帯端末は、車両からの信号を受信する度に、当該信号の受信強度を示す応答信号を返送する。車両側装置の応答取得部F2は、携帯端末からの応答信号に基づいて、LF送信アンテナ32別の受信強度を取得する。エリア特定部F3は、アンテナ別の受信強度に基づいて携帯端末2が存在しうる候補エリアを特定する。位置推定部F4は、探索範囲のうち、候補エリア内に位置する候補点について誤差評価値を算出し、端末位置を判定する。【選択図】図4


    Access

    Download


    Export, share and cite



    Title :

    POSITION ESTIMATION SYSTEM FOR VEHICLE, AND POSITION ESTIMATION DEVICE FOR VEHICLE


    Additional title:

    車両用位置推定システム、及び車両用位置推定装置


    Contributors:

    Publication date :

    2020-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



    VEHICLE POSITION ESTIMATION SYSTEM, VEHICLE POSITION ESTIMATION METHOD, AND VEHICLE POSITION ESTIMATION PROGRAM

    HIYOKAWA TOYOJI / TANAKA MASARU | European Patent Office | 2020

    Free access

    VEHICLE POSITION ESTIMATION SYSTEM, VEHICLE POSITION ESTIMATION METHOD, AND VEHICLE POSITION ESTIMATION PROGRAM

    IMAMURA YOSHIAKI / HIYOKAWA TOYOJI / OGAWA KEITA | European Patent Office | 2020

    Free access

    VEHICLE POSITION ESTIMATION DEVICE AND VEHICLE POSITION ESTIMATION METHOD

    IGARASHI YUJI / OTA YUKO | European Patent Office | 2020

    Free access


    VEHICLE POSITION/BEARING ESTIMATION DEVICE AND VEHICLE POSITION/BEARING ESTIMATION METHOD

    YAMAGUCHI ICHIRO | European Patent Office | 2018

    Free access