TRAIN SPEED AND POSITION CALCULATION DEVICE, TRAIN OPERATION SUPPORT DEVICE, TRAIN OPERATION CONTROL DEVICE AND TRAIN SPEED AND POSITION CALCULATION METHOD

To calculate a speed and a position of a train with good accuracy even during occurrence of idling and sliding.SOLUTION: A train speed and position calculation device comprises: an acceleration detection part which detects an acceleration in a travel direction of a train; an acceleration calibration part which, when the train stops, determines a gradient of a location of the acceleration detection part with reference to a gradient information holding part, and calibrates zero point of the acceleration detection part on the basis of comparison between an acceleration according to the gradient and a detection value of the acceleration detection part to calculate a calibration acceleration; an actual acceleration estimation part which, when the train travels, determines a gradient of a location of the acceleration detection part with reference to the gradient information holding part, and estimates an actual acceleration of the train on the basis of an acceleration according to the gradient and the calibration acceleration calculated by the acceleration calibration part; a position calculation part which performs time integration of the estimated actual acceleration, and calculates a travel distance and a position of the train; and a gradient information correction part which calculates off-set to be added to the actual acceleration estimated so that the calculated travel distance is close to an actual travel distance, and corrects gradient information corresponding to a location of the acceleration detection part, when the train stops, on the basis of the off-set.SELECTED DRAWING: Figure 1 【課題】空転や滑走の発生時でも列車の速度と位置を精度よく算出する。【解決手段】実施形態の列車速度位置算出装置は、列車の進行方向の加速度を検出する加速度検出部と、列車停車時に、加速度検出部の設置位置の勾配を勾配情報保持部を参照して求め、当該勾配に応じた加速度と加速度検出部の検出値の比較に基づいて加速度検出部のゼロ点を校正して校正加速度を算出する加速度校正部と、列車走行時に、加速度検出部の設置位置の勾配を勾配情報保持部を参照して求め、当該勾配に応じた加速度と加速度校正部で算出した校正加速度に基づいて、列車の実加速度を推定する実加速度推定部と、推定した実加速度を時間積分して列車の走行距離と位置を算出する位置算出部と、算出した走行距離が、実際の走行距離に近くなるように推定した実加速度に加えるべきオフセットを算出し、当該オフセットに基づいて停車時の加速度検出部の設置位置に対応する勾配情報を補正する勾配情報補正部と、を備える。【選択図】図１