To provide a wrong driving determination device.SOLUTION: A wrong driving determination device, which receives a radio signal from a vehicle by an array antenna, and makes a determination about a driving direction of the vehicle on the basis of a change in angle between the array antenna and the vehicle, comprises: an inbound direction estimation unit that estimates an inbound angle of the radio signal as the angle between the array antenna and the vehicle on the basis of the radio signal received by each element of the array antenna; and a driving direction determination unit that, when the inbound angle acquired from the inbound direction estimation unit transits from a first angle region to a second angle region, determines that the driving direction of the vehicle is a wrong driving direction. Each antenna element of the array antenna is arranged so that an element interval is longer than a half wavelength of the radio signal, and the first angle region is a region in at least a first angle range smaller in the angle than a maximum value of the inbound angle, and the second angle region is a region in at least a second angle range smaller in the angle than the first angle region, and greater in the angle than a minimum value of the inbound angle.SELECTED DRAWING: Figure 5
【課題】逆走判定装置を提供する。【解決手段】車両からの無線信号をアレイアンテナで受信し、前記アレイアンテナと前記車両との角度の変化に基づいて前記車両の走行方向に関する判定を行う逆走判定装置であって、前記アレイアンテナの各素子が受信した前記無線信号に基づいて、前記無線信号の到来角を、前記アレイアンテナと前記車両との角度として推定する到来方向推定部と、前記到来方向推定部から取得した前記到来角が、第1の角度領域から第2の角度領域に遷移した場合に、前記車両の走行方向が逆走方向であると判定する走行方向判定部と、を備え、前記アレイアンテナの各アンテナ素子は、素子間隔が前記無線信号の半波長よりも長くなるように配置され、前記第1の角度領域は、少なくとも前記到来角の最大値よりも角度が小さい第1の角度範囲内の領域であり、前記第2の角度領域は、少なくとも前記第1の角度領域よりも角度が小さく、前記到来角の最小値よりも角度が大きい第2の角度範囲内の領域である、逆走判定装置。【選択図】図5
WRONG DRIVING DETERMINATION DEVICE
逆走判定装置
2019-09-05
Patent
Elektronische Ressource
Japanisch
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