基于加速度计和陀螺仪的波浪测量方法

针对实验室中波浪参数的测量,研究了惯性传感器加速度计和陀螺仪的性能,提出一种基于加速度计和陀螺仪的波浪测量方法。利用惯性导航系统中的坐标系转换、信号的数值积分以及趋势项处理等算法,对惯性传感器获取的加速度信号进行处理得到垂向位移,从而计算出波高值,并对比分析了高通滤波算法和滑动平均算法对趋势项的消除效果。试验结果表明,利用惯性传感器加速度计和陀螺仪的测量方法获得地理坐标系下的垂向位移曲线,与波高传感器的实测曲线吻合较好,且滑动平均算法对趋势项的消除效果更好。所以,基于加速度计和陀螺仪的波浪测量方法可满足于实验室的波浪测量。

Wave Measurement Method Based on Accelerometer and Gyroscope

Aiming at the measurement of wave parameters in the laboratory, the performance of accelerometer and gyroscope of inertial sensor was studied, and the wave measurement method based on accelerometer and gyroscope was presented.By using the algorithm of coordinate system transformation, signal numerical integration and trend item processing in inertial navigation systems, the vertical displacement was obtained by processing the acceleration signal obtained by inertial sensor, then the wave height value was calculated, and the elimination effect of the high-pass filtering algorithm and the sliding average algorithm on the trend term was compared and analyzed.The experimental results show that the vertical displacement curve in the geographical coordinate system is obtained by using the inertial sensor accelerometer and the gyroscope"s measurement method, which is in good agreement with the measured curve of the wave height sensor, and the sliding average algorithm has better effect on the trend term. Therefore, the wave measurement method based on accelerometer and gyroscope can satisfy the measurement of wave parameters in the laboratory.