A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VEHICLE SYSTEM, PORTABLE UNIT, AND ON-VEHICLE DEVICE
PROBLEM TO BE SOLVED: To accurately determine whether or not a radio wave received by a portable unit is a radio wave directly received from an on-vehicle device even when the radio wave transmitted from the on-vehicle device is relayed by a relay unit having a plurality of antennas.SOLUTION: In a vehicle system 1 comprising: a portable unit 50 carried by a user; and an on-vehicle device 10 mounted on a vehicle, and configured so as to be communicable with the portable unit by transmitting a radio wave consisting of linearly polarized waves, a position acquisition pat 21 acquires at least a planar relative positional relation between the portable unit 50 and the on-vehicle device 10, and an attitude acquisition part 65 acquires a three-dimensional attitude of the portable unit, and a determination part 22 determines whether or not the radio wave received by the portable unit is a radio wave directly received from the on-vehicle device on the basis of characteristics related to a direction of a magnetic field or an electric field in the radio wave received by the portable unit and the relative positional relation acquired by the position acquisition part and the attitude acquired by the attitude acquisition part.SELECTED DRAWING: Figure 1
【課題】車載装置から送信された電波が複数のアンテナを備えた中継器によって中継された場合でも、携帯機が受信した電波が車載装置から直接受信された電波であるか否かを、正確に判断可能とすること。【解決手段】 ユーザに携帯される携帯機５０と、前記車両に搭載され、直線偏波からなる電波を送信することによって前記携帯機と通信可能に構成された車載装置１０と、を備えた車両システム１において、位置取得部２１は、携帯機５０と車載装置１０との少なくとも平面的な相対的位置関係を取得する。姿勢取得部６５は、前記携帯機の３次元的な姿勢を取得する。判断部２２は、前記携帯機が受信した前記電波における磁界又は電界の方向に係る特性と、前記位置取得部が取得した相対的位置関係と、前記姿勢取得部が取得した姿勢とに基づき、前記携帯機が受信した電波が、前記車載装置から直接受信された電波であるか否かを判断する。【選択図】図１
VEHICLE SYSTEM, PORTABLE UNIT, AND ON-VEHICLE DEVICE
PROBLEM TO BE SOLVED: To accurately determine whether or not a radio wave received by a portable unit is a radio wave directly received from an on-vehicle device even when the radio wave transmitted from the on-vehicle device is relayed by a relay unit having a plurality of antennas.SOLUTION: In a vehicle system 1 comprising: a portable unit 50 carried by a user; and an on-vehicle device 10 mounted on a vehicle, and configured so as to be communicable with the portable unit by transmitting a radio wave consisting of linearly polarized waves, a position acquisition pat 21 acquires at least a planar relative positional relation between the portable unit 50 and the on-vehicle device 10, and an attitude acquisition part 65 acquires a three-dimensional attitude of the portable unit, and a determination part 22 determines whether or not the radio wave received by the portable unit is a radio wave directly received from the on-vehicle device on the basis of characteristics related to a direction of a magnetic field or an electric field in the radio wave received by the portable unit and the relative positional relation acquired by the position acquisition part and the attitude acquired by the attitude acquisition part.SELECTED DRAWING: Figure 1
【課題】車載装置から送信された電波が複数のアンテナを備えた中継器によって中継された場合でも、携帯機が受信した電波が車載装置から直接受信された電波であるか否かを、正確に判断可能とすること。【解決手段】 ユーザに携帯される携帯機５０と、前記車両に搭載され、直線偏波からなる電波を送信することによって前記携帯機と通信可能に構成された車載装置１０と、を備えた車両システム１において、位置取得部２１は、携帯機５０と車載装置１０との少なくとも平面的な相対的位置関係を取得する。姿勢取得部６５は、前記携帯機の３次元的な姿勢を取得する。判断部２２は、前記携帯機が受信した前記電波における磁界又は電界の方向に係る特性と、前記位置取得部が取得した相対的位置関係と、前記姿勢取得部が取得した姿勢とに基づき、前記携帯機が受信した電波が、前記車載装置から直接受信された電波であるか否かを判断する。【選択図】図１
VEHICLE SYSTEM, PORTABLE UNIT, AND ON-VEHICLE DEVICE
車両システム、携帯機、及び車載装置
KUSUMOTO TETSUYA (author) / SAITO TAKASHI (author) / SAKAMOTO KOJI (author)
2018-05-24
Patent
Electronic Resource
Japanese
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