摘要
将单片机数据处理应用于光纤光栅匹配解调方法中 ,对光电探测器输出电压与波长之间的关系数据进行线性插值 .通过相关计算 ,确定传感光栅的中心波长位移 .实验表明 ,采用相关计算数据处理得到的传感光栅中心波长值 ,比起直接采用光电探测器输出电压为最大的数据点所确定的中心波长值 ,具有测量重复性好 ,分辨率高 .结果 ,证明此方法可提高解调精度 .
A high precise method of sensing demodulation is formed by matching fiber sensor with grating sensor and by applying a single chip microcomputer to it for data processing. In this method, linear interpolation is conducted on the relational data between wavelength and output voltage of photoelectric detector; and the centre wavelength shift of sensing grating is determined by correlation computing. As indicated by experimental results, the centre wavelength value of sensing grating obtaining from data processing of correlation computing shows a better repeatability of measurement and a higher resolution than the centre wavelength value determined by directly adopting output voltage of photoelectric detector as maximal datapoint.
出处
《华侨大学学报（自然科学版）》
CAS
2004年第3期254-257,共4页
Journal of Huaqiao University(Natural Science)
基金
国务院侨务办公室科研基金资助项目 ( 0 2QZR0 3)
关键词
光纤光栅传感器
单片机
光纤光栅解调
相关计算
fiber-grating sensors, single-chip microcomputer, demodulation by fiber grating, correlation computing
