高速摄像测量系统误差分析与研究

Error Analysis and Research of High Speed Camera Measurement System

高速摄像测试技术是一项高科技测量技术,目前在抗震试验领域的应用还较少。抗震试验中,作为设备抗震性能评判依据的设备顶部与底部相对位移的测量,目前还没有准确的方法。本文以电动振动台水平台面为实验对象,对其施加定频正弦激励,同时采用基于加速度传感器的接触式测量方法和基于高速摄像技术的非接触式振动测量方法采集水平台面的振动信号,通过数据对比,验证基于高速摄像技术的振动测试方法的可行性。

The high speed camera is a kind of high-tech metrical technique.It has been seldom used in anti-seismic test field.There has been no accurate measurement method of the equipment top and bottom relative displacement which is a judgment basis of anti-seismic property.The horizontal table of the electric shaker table which used as the experimental subject was subjected to fixed frequency sine excitation,contact measurement which based on accelerometer sensors and non-contact measurement which based on high speed camera were at the same time collecting the horizontal table vibration signals.By comparing the data acquired through the above two methods,verify that whether the high speed camera vibration measurement is available or not.