To improve accuracy of estimation of a position of a portable machine to a vehicle.SOLUTION: A position estimation device 100, 100d being mounted on a vehicle 400 and estimating a position of a portable machine 200 carried by a user of the vehicle comprises: a vehicle side transceiver 17, 70; a distance data acquisition part 12 for calculating a distance between the portable machine and the vehicle side transceiver; a movement speed calculation part 13 for calculating a movement speed of the portable machine on the basis of a change between previous distance data and current distance data; an update part 14 for, if the movement speed is less than a predetermined first speed V1 predetermined on the basis of a movement speed range of the user, updating a distance for position estimation for estimating a position of the portable machine to the vehicle by using the current distance data, and if the movement speed is equal to or greater than the first speed, executing selective update processing which is processing not for updating the distance for position estimation by using the current distance data; and a position estimation part 62, 62d for estimating a position of the portable machine to the vehicle by using the updated distance for position estimation.SELECTED DRAWING: Figure 6

    【課題】車両に対する携帯機の位置を推定する精度を向上する。【解決手段】車両400に搭載され、車両のユーザに携帯される携帯機200の位置を推定する位置推定装置100、100dは、車両側送受信機17、70と、携帯機と車両側送受信機との距離を算出する距離データ取得部12と、前回距離データと今回距離データの変化から携帯機の移動速度を算出する移動速度算出部13と、移動速度がユーザの移動速度範囲に基づいて予め定められた第1速度V1未満である場合に、今回距離データを用いて車両に対する携帯機の位置を推定するための位置推定用距離を更新し、移動速度が第1速度以上である場合に、今回距離データを用いて位置推定用距離を更新しない処理である、選択的更新処理を実行する、更新部14と、更新された位置推定用距離を用いて車両に対する携帯機の位置を推定する位置推定部62、62dと、を備える。【選択図】図6


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    Title :

    POSITION ESTIMATION DEVICE, POSITION ESTIMATION SYSTEM, AND POSITION ESTIMATION METHOD


    Additional title:

    位置推定装置、位置推定システム及び位置推定方法


    Contributors:

    Publication date :

    2020-11-26


    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



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