The invention discloses a system and a method for improving train image acquisition triggering accuracy, and the system comprises at least four sensors which are sequentially arranged on the same side of a rail along the advancing direction of a train and are arranged at intervals; and the main control module is connected with the sensor. Different running states of the train are judged by arranging at least four sensors, fitting compensation is adopted during variable acceleration, and the measurement error is further reduced; according to the actual installation distance of the sensors and the sensing time difference, the accelerated speed larger than or equal to two times when each train wheel passes through the sensor area and the instantaneous speed at the position of the last sensor are calculated, the accelerated speed variable between the last sensor and the trigger point is analyzed through fitting of the accelerated speed larger than or equal to two times, and the real-time speed of the train wheel is obtained. The delay triggering time is calculated through the instantaneous speed and the acceleration variable at the last sensor, so that the triggering accuracy is improved; according to the method, compensation of fixed numerical values is not needed, and non-universality of compensation values of various running states of the train is avoided.
本发明公开一种提升列车图像采集触发准确度的系统及方法,该系统包括:沿列车行进方向顺序设置于铁轨同侧的至少四个传感器,传感器之间间隔设置;主控模块,与传感器相连。本发明通过设置至少四个传感器判断列车不同的运行状态,当变加速时采用拟合补偿,进一步减小测量误差;本发明根据传感器实际安装间距和感应的时间差,计算出每个列车车轮通过传感器区域内的≥2次加速度和在最后一个传感器处的瞬时速度,通过对≥2次加速度的拟合,分析出最后一个传感器到触发点之间的加速度变量,再通过最后一个传感器处的瞬时速度和加速度变量计算出延时触发时间,提高触发准确度;本发明不需要做固定数值的补偿,避免列车各种运行状态补偿值的不通用性。
System and method for improving train image acquisition triggering accuracy
一种提升列车图像采集触发准确度的系统及方法
15.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC |
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