摘要
针对传统的桥梁位移测量方法的不足,提出了采用双轴加速度传感器进行桥梁位移测量的原理和方法,即利用双轴加速度传感器能同时敏感两个互相垂直的方向上的加速度,从而经过有效的信号处理可获得桥梁的振动位移;讨论了低频噪声对桥梁位移测量的影响;提出以卡尔曼滤波原理为基础的信号处理方法来提高测量精度,抑制噪声,并得到两个方向的位移信息;仿真结果表明了本滤波方法的有效性。
A novel method for bridge displacement measurement is proposed by which the dual-axis acceleration sensor is used to monitor the health condition of bridge and overcome the weaknesses of conventional methods. The method uses the character of the dual-axis acceleration sensor measuring two vertical directs' accelerations, then get bridge displacement through applying signal process. The influence of low frequency noise in the measurement of bridge displacement is also discussed. To improve accuracy of the measurement, a signal process method based on the principle of Kalman filter is applied to restrain noise and acquire bridge displacement information, and the effectiveness has been proved by the result of simulation.
出处
《计算机测量与控制》
CSCD
2005年第6期524-526,共3页
Computer Measurement &Control
