基于DSP的光纤光栅解调系统设计与实现

Design and Implementation of Fiber Bragg Grating Demodulation Systerm Based on DSP

基于DSP小波消噪技术设计实现了光纤光栅解调系统。利用DSP对含噪光纤光栅反射谱进行分解与重构,实现了实时小波消噪;利用单片机外部中断实现反射谱峰值的准确定位。进行了相关的仿真试验,验证了利用DSP进行小波消噪处理的可行性。光纤光栅温度解调实验结果表明,解调系统的解调线性度得到了改善。

Design and implement a fiber Bragg gratting（FBG） demodulation systerm based on DSP wavelet-denoise technique.The DSP is used to analyze and reconstruct the noise FBG reflective spectrum, in order to realize real-time wavelet-denoise ; Micro controller is used to carry out exact orientation of the peak value of reflective spectrum by external interrupt.Correlative simulation test is carried out,which proves the feasibility that wavelet-denoise is processed on DSP.The results of FBG temperature demodulation experi- ment shows that the linearity of demodulation systerm is improved.