To provide a position determination device for a vehicle, a position determination system for a vehicle and a position determination method capable of reducing a risk of wrongly determining a position of a portable device.SOLUTION: A plurality of UWB communication devices installed in a vehicle each communicates with a portable device based on an instruction from a smart ECU 4, to acquire a reception strength, and a distance measurement value based on a flight time of radio waves, to report them to the smart ECU 4. In the smart ECU 4, data indicating a model value, which is measured in advance through a test and is the reception strength depending on a distance, is registered. The smart ECU 4 determines reliability of each UWB communication device 6 by comparing a strength observation value, which is the reception strength reported from each UWB communication device, with a model value corresponding to a distance measurement value. Then, the smart ECU 4 performs coordinate calculation processing by preferentially using the distance measurement value obtained by the UWB communication device 6 with high reliability.SELECTED DRAWING: Figure 6

    【課題】携帯デバイスの位置を誤判定するおそれを低減可能な車両用位置判定装置、車両用位置判定システム、位置判定方法を提供する。【解決手段】車両に搭載された複数のUWB通信機はそれぞれスマートECU4からの指示に基づき、携帯デバイスと通信することで、受信強度と、電波の飛行時間に基づく測距値と、を取得してスマートECU4に報告する。スマートECU4には、予め試験によって測定された、距離に応じた受信強度であるモデル値を示すデータが登録されている。スマートECU4は、各UWB通信機から報告される受信強度である強度観測値を、測距値に対応するモデル値と比較することで、UWB通信機6ごとの信頼度を決定する。そして、スマートECU4は信頼度が高いUWB通信機6での測距値を優先的に用いて座標算出処理を実施する。【選択図】図6


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    Title :

    POSITION DETERMINATION DEVICE FOR VEHICLE, POSITION DETERMINATION SYSTEM FOR VEHICLE, AND POSITION DETERMINATION METHOD


    Additional title:

    車両用位置判定装置、車両用位置判定システム、位置判定方法


    Contributors:

    Publication date :

    2023-12-13


    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 / E05B LOCKS , Schlösser / H04B TRANSMISSION , Übertragung





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