To provide a position determining system with which it is possible to reduce the possibility of the position of a portable terminal being erroneously determined.SOLUTION: A vehicle-onboard system 1 comprises a smart ECU, a vehicle interior communication instrument, an exterior right-side communication instrument 12K, and an exterior left-side communication instrument. The vehicle interior communication instrument is installed inside of a vehicle interior. The exterior right-side communication instrument 12K and the exterior left-side communication instrument are installed in such an attitude that, in the left/right side sills 42 of the vehicle, the center of directivity faces upward and the plane of polarization is perpendicular to the side face of the vehicle. As the above installation position and installation attitude are adopted for the exterior right-side communication instrument 12K and the exterior left-side communication instrument, a strong electric field area is formed in the vicinity of doors and an electric field level in an area 2 m apart from the vehicle is suppressed to a low level. A smart ECU 11 determines the position of a portable terminal using the received strength of a signal from the portable terminal by each onboard communication instrument 12.SELECTED DRAWING: Figure 8

    【課題】携帯端末の位置を誤判定する恐れを低減可能な位置判定システムを提供する。【解決手段】車載システム1は、スマートECU、車室内通信機、室外右側通信機12K、及び室外左側通信機を備える。車室内通信機は車室内に設置されている。室外右側通信機12K及び室外左側通信機は、車両左/右のサイドシル42において、指向性の中心が上に向き且つ偏波面が車両の側面部に対して垂直となる姿勢で設置されている。室外右側通信機12K及び室外左側通信機は上記の取付位置及び取付姿勢が採用される事により、ドア付近に強電界エリアを形成するとともに、車両から2m以上離れた領域での電界レベルを低レベルに抑制する。スマートECU11は、各車載通信機12での携帯端末からの信号の受信強度を用いて携帯端末の位置を判定する。【選択図】図8


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    Titel :

    POSITION DETERMINING SYSTEM


    Weitere Titelangaben:

    位置判定システム


    Beteiligte:

    Erscheinungsdatum :

    2020-06-18


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    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 / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze



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