The invention belongs to the field of urban rail transit, and discloses a space-time synchronization information detection method for a rail inspection system. According to the method, the calculation of the train speed is completed through the measurement information of the gyro assembly and the accelerometer assembly, the speed estimation accuracy is improved by optimizing the state equation, the estimated train speed is converted into the equivalent trigger pulse, the trigger pulse is utilized to perform synchronous trigger sampling on the sensor carried by the train, the reduction of the time-space synchronization efficiency is avoided, and the sensor carried by the inspection system is prevented from working asynchronously. Accurate matching of position information at the sampling moment of the sensor is achieved through segmentation fitting interpolation, and the data analysis efficiency after measurement work is completed is improved.
本发明属于城市轨道交通领域,公开了轨道巡检系统时空同步信息检测方法。本发明通过陀螺组件、加速度计组件测量信息完成列车速度的解算,通过优化状态方程,提高了速度估计准确性,并将估计的列车速度折算成等效触发脉冲,利用触发脉冲对列车搭载的传感器进行同步触发采样,避免时空同步效率降低,防止巡检系统搭载的传感器工作不同步。通过分段拟合插值实现了传感器采样时刻位置信息的准确匹配,提高了测量作业完成后的数据分析效率。
Space-time synchronization information detection method for rail inspection system
轨道巡检系统时空同步信息检测方法
2021-12-17
Patent
Electronic Resource
Chinese
Method for measuring time-space synchronization information of rail inspection system
European Patent Office | 2021