Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
AUTHENTICATION DEVICE, VEHICLE, AUTHENTICATION METHOD, AND AUTHENTICATION PROGRAM
To restrict a power consumption when communicating with an electronic key while restricting a relay attack.SOLUTION: An ECU 20 as an authentication device comprises a UWB communication part 26 loaded on a vehicle 12 and communicating wirelessly between an electronic key 14 and a UWB, an LF transmission part 22 loaded on the vehicle 12 in multiple and communicating wirelessly between the electronic key 14 and an LF band, a calculation part calculating a distance and an angle at which the electronic key 14 is situated relative to the UWB communication part 26 on the basis of a wireless communication with the electronic key 14 at the UWB communication part 26, an execution part executing a wireless communication with the electronic key 14 at the LF transmission part 22 corresponding to the calculated angle among the plurality of LF transmission parts 22 and a determination part deciding whether the electronic key 14 is present or not in the area corresponding to the LF transmission part 22 in which the wireless communication is executed on the basis of the executed wireless communication of the LF band and the calculated distance.SELECTED DRAWING: Figure 1
【課題】リレーアタックを抑制すると共に、電子キーとの通信時における電力の消費を抑制する。【解決手段】認証装置としてのＥＣＵ２０は、車両１２に搭載され、電子キー１４とＵＷＢの無線通信を行うＵＷＢ通信部２６と、車両１２に複数搭載され、電子キー１４とＬＦ帯の無線通信を行うＬＦ送信部２２と、ＵＷＢ通信部２６における電子キー１４との無線通信に基づいて、電子キー１４がＵＷＢ通信部２６に対して位置する距離及び角度を算出する算出部と、複数のＬＦ送信部２２のうち算出された角度に対応するＬＦ送信部２２において、電子キー１４との無線通信を実行させる実行部と、実行されるＬＦ帯の無線通信及び算出された距離に基づいて、無線通信が実行されるＬＦ送信部２２に対応するエリアに電子キー１４が存在するかを判定する判定部と、を備えている。【選択図】図１
AUTHENTICATION DEVICE, VEHICLE, AUTHENTICATION METHOD, AND AUTHENTICATION PROGRAM
To restrict a power consumption when communicating with an electronic key while restricting a relay attack.SOLUTION: An ECU 20 as an authentication device comprises a UWB communication part 26 loaded on a vehicle 12 and communicating wirelessly between an electronic key 14 and a UWB, an LF transmission part 22 loaded on the vehicle 12 in multiple and communicating wirelessly between the electronic key 14 and an LF band, a calculation part calculating a distance and an angle at which the electronic key 14 is situated relative to the UWB communication part 26 on the basis of a wireless communication with the electronic key 14 at the UWB communication part 26, an execution part executing a wireless communication with the electronic key 14 at the LF transmission part 22 corresponding to the calculated angle among the plurality of LF transmission parts 22 and a determination part deciding whether the electronic key 14 is present or not in the area corresponding to the LF transmission part 22 in which the wireless communication is executed on the basis of the executed wireless communication of the LF band and the calculated distance.SELECTED DRAWING: Figure 1
【課題】リレーアタックを抑制すると共に、電子キーとの通信時における電力の消費を抑制する。【解決手段】認証装置としてのＥＣＵ２０は、車両１２に搭載され、電子キー１４とＵＷＢの無線通信を行うＵＷＢ通信部２６と、車両１２に複数搭載され、電子キー１４とＬＦ帯の無線通信を行うＬＦ送信部２２と、ＵＷＢ通信部２６における電子キー１４との無線通信に基づいて、電子キー１４がＵＷＢ通信部２６に対して位置する距離及び角度を算出する算出部と、複数のＬＦ送信部２２のうち算出された角度に対応するＬＦ送信部２２において、電子キー１４との無線通信を実行させる実行部と、実行されるＬＦ帯の無線通信及び算出された距離に基づいて、無線通信が実行されるＬＦ送信部２２に対応するエリアに電子キー１４が存在するかを判定する判定部と、を備えている。【選択図】図１
AUTHENTICATION DEVICE, VEHICLE, AUTHENTICATION METHOD, AND AUTHENTICATION PROGRAM
認証装置、車両、認証方法及び認証プログラム
CHOJI HIROAKI (Autor:in) / NISHIYAMA SHIGEKI (Autor:in) / TAKADA NAOYUKI (Autor:in)
22.09.2022
Patent
Elektronische Ressource
Japanisch
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