To provide a track curvature estimation device and a method by which the curvature of a track can be easily obtained without measuring various parameters precisely.SOLUTION: The track curvature estimation device is installed on a vehicle 1 and includes an area sensor camera 11 imaging a curve on a track 2 in a traveling direction of the vehicle 1 and a processing unit 13 obtaining a curvature radius of the curve based on an image A acquired by the area sensor camera 11. The processing unit 13 includes a track position detection unit 21 obtaining an on-image track position D of the curve, a coefficient calculation unit 22 that is input with information about an actual track position d and its curvature radius R in plural points on the curve in advance to obtain a curvature radius estimation coefficient showing a correspondence relation between the on-image track position D, which corresponds to the actual track position d in the plural points, and its curvature radius R in the curve, and a curvature radius estimation unit 23 obtaining the curvature radius of the curve based on a position of the curve on the image and the correspondence relation.SELECTED DRAWING: Figure 2
【課題】各種パラメータを精密に測定せずとも、線路の曲率を簡便に求めることができる線路曲率推定装置及び方法を提供する。【解決手段】車両1に設置され、車両1の進行方向の線路2上におけるカーブを撮像するエリアセンサカメラ11と、エリアセンサカメラ11にて取得した画像Aに基づき、前記カーブの曲率半径を求める処理部13とを備え、処理部13は、前記カーブの画像上線路位置Dを求める線路位置検出部21と、前記カーブ上の複数点における実線路位置d及びその曲率半径Rの情報が予め入力され、前記カーブのうち、複数点における実線路位置dに対応する画像上線路位置Dとその曲率半径Rとの対応関係である曲率半径推定係数を求める係数計算部22と、前記カーブの前記画像上の位置及び前記対応関係に基づき、前記カーブの曲率半径を求める曲率半径推定部23とを備える。【選択図】図2
TRACK CURVATURE ESTIMATION DEVICE AND METHOD
線路曲率推定装置及び方法
2020-01-16
Patent
Elektronische Ressource
Japanisch
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