重金属离子敏光纤舌信号处理仿真研究
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摘要
基于高斯函数与光谱信号的相似性,采用高斯函数来对离子敏光纤传感器阵列—光纤舌信号进行仿真。利用Matlab对光纤舌可能检测到的发生光谱叠加的光谱信号进行分离和相对误差分析。从仿真结果可知,采用相应的算法可以减小由于重金属离子敏感膜的离子间干扰引起的光谱重叠误差。在此基础上,进行了带有光噪声光纤舌光谱叠加信号的信号处理仿真,为实际光纤舌的制作和光谱信号处理提供了理论依据。
Based on approximation between Gauss function and spectral signal,Gauss function is utilized to simulate signal of optical fiber sensor array sensitive to ion,optical fiber tongue. Division of superposition spectral signal detected by optical fiber tongue and analysis of relative error are carried out by Matlab software. From result of simulation,it is known that superposition error of spectral caused by interference between ions in films sensitive to heavy metal ions can be reduced with corresponding algorithm. On this basis,superposition signals processing and simulation with optical noises in optical fiber tongue are carried out,provides theoretical foundation for preparation of practical optical fiber tongue and spectral signal processing.
Based on approximation between Gauss function and spectral signal,Gauss function is utilized to simulate signal of optical fiber sensor array sensitive to ion,optical fiber tongue. Division of superposition spectral signal detected by optical fiber tongue and analysis of relative error are carried out by Matlab software. From result of simulation,it is known that superposition error of spectral caused by interference between ions in films sensitive to heavy metal ions can be reduced with corresponding algorithm. On this basis,superposition signals processing and simulation with optical noises in optical fiber tongue are carried out,provides theoretical foundation for preparation of practical optical fiber tongue and spectral signal processing.
引文
[1]王秀芬,王永恒.城市污水中的重金属分析[J].水利天地,2002(9):40-41.
[2]María Espinosa Bosch1,Antonio Jesús Ruiz Sánchez.Recent development in optical fiber biosensors[J].Sensors,2007,7:797-859.
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[5]张信凤,辛娟娟,张力培,等.基于液芯光纤和CCD的分光光度法测定河水中的Cr(VI)[J].四川大学学报:自然科学版,2006,43(3):710-712.
[6]李敏,盛毅.高斯拟合算法在光谱建模中的应用研究[J].光谱学与光谱分析,2008,28(10):2352-2355.
[2]María Espinosa Bosch1,Antonio Jesús Ruiz Sánchez.Recent development in optical fiber biosensors[J].Sensors,2007,7:797-859.
[3]刘云峰,董飒英,姜江.长周期光纤光栅对铜离子的检测研究[J].分析科学学报,2006,22(3):258-261.
[4]张敬东,Harald Prestel,Reinhard Niessner.光纤重金属离子传感器的研制[J].传感器技术,2001,20(6):10-13.
[5]张信凤,辛娟娟,张力培,等.基于液芯光纤和CCD的分光光度法测定河水中的Cr(VI)[J].四川大学学报:自然科学版,2006,43(3):710-712.
[6]李敏,盛毅.高斯拟合算法在光谱建模中的应用研究[J].光谱学与光谱分析,2008,28(10):2352-2355.