The invention discloses a track geometric parameter detection system and method applied to a variable speed condition, and relates to the technical field of track geometric parameter detection. According to the detection speed of the track detection vehicle, the angular velocity is detected by using the gyroscope sensor when the track detection vehicle runs at a low speed, the gyroscope sensor is not influenced by the direction change of the sensitive axis of the sensor under the low-speed condition, and the measured track geometric parameter precision is higher. The acceleration sensor is used for detecting the acceleration when the track detection vehicle runs at a high speed, the signal-to-noise ratio of acceleration signals is good, the integral saturation phenomenon is avoided, and the precision of calculating the absolute displacement of the track detection beam through the signals of the acceleration sensor is higher. And different detection speeds can be adapted to by means of sub-speed detection, and the detection precision requirements under low-speed and high-speed conditions can be met at the same time. According to the invention, signal processing is carried out in a mode of combining anti-aliasing filtering and compensation filtering, so that a sampling signal is ensured not to be distorted.
本发明公开了一种应用于变速条件下的轨道几何参数检测系统及方法,涉及轨道几何参数检测技术领域。本发明根据轨道检测车的检测速度,在轨道检测车低速运行下利用陀螺仪传感器检测角速度,陀螺仪传感器不受低速条件下传感器敏感轴方向变化的影响,测量的轨道几何参数精度更高。在轨道检测车中高速运行下利用加速度传感器检测加速度,加速度信号信噪比好,且不会出现积分饱和现象,采用加速度传感器的信号计算轨检梁绝对位移的精度更高。分速度检测可保证适应不同的检测速度,同时满足低速和高速条件下的检测精度要求。本发明采用抗混滤波和补偿滤波相结合的方式进行信号处理,保证采样信号不会出现失真现象。
Track geometric parameter detection system and method applied to variable speed condition
一种应用于变速条件下的轨道几何参数检测系统及方法
2024-02-27
Patent
Elektronische Ressource
Chinesisch
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