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用于生物量浓度在线检测的光纤衰减全反射传感器

Optical fiber attenuated total reflection sensor for on-line measurement of biomass concentration

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摘要

为了在生物膜滴滤塔降解有机废气过程中实现生物量浓度的测量,设计了光纤衰减全反射(ATR) 生物量浓度传感器,给出了传感器组成原理、结构参数、光路分析及其理论解释。根据光波进入光密介质(Si晶体)与光疏介质(生物菌液)的分界面时所产生的隐失波现象,以及生物菌液对隐失波的散射和吸收引起接收光能量变化的物理机理,建立了一种新的生物量浓度测量方法。实验选用可见光源,在25 ℃恒温情况下对生物量浓度测量进行了实验研究。实验结果表明:测量结果的相对误差均值为2.217%,基本上满足生物量浓度在线测量要求。该传感器的设计原理和方法具有一定的普遍意义,可应用于制剂、制酒、生化等行业。

Abstract

With the aim to measure the biomass concentration in the biodegradation of organic waste gas for a trickling biofilter, an optical fiber Attenuated Total Reflection(ATR) sensor for measuring the biomass concentration was designed and the composition principle, structural parameters, optical path analysis and the theoretical explanation of the sensor were also discussed.A new method to measure the biomass concentration was proposed based on the principles that the evanescent wave is scattered and absorbed by the bacterial suspension when the beams enter into the interface between the optically denser medium-Si crystal and the optically less dense-bacterial suspension, and the receiving bacterial power of the light is changed by the bacterial suspension. Under a temperature of 25℃, the biomass concentration was measured by a visible light source. Experimental results indicate that the mean relative error by proposed method is 2.217%, which can satisfy the on-line measurement requirements of the biomass concentration. The design principle and method of the sensor is significance and can be used in reagent preparation, alcohol production, biochemistry, etc.

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中图分类号:TN253;TP212.3

所属栏目:现代应用光学

基金项目:国家自然科学基金资助项目(No. 50876120);重庆市教委应用基础项目基金资助项目(KJ080604,KJ090620)

收稿日期:2009-09-11

修改稿日期:2009-10-26

网络出版日期:0001-01-01

作者单位    点击查看

赵明富:重庆理工大学 电子信息与自动化学院,重庆 400050
钟年丙:重庆理工大学 电子信息与自动化学院,重庆 400050
罗彬彬:重庆理工大学 电子信息与自动化学院,重庆 400050
胡新宇:重庆理工大学 电子信息与自动化学院,重庆 400050
钟连超:重庆理工大学 电子信息与自动化学院,重庆 400050

联系人作者:赵明富(zmf@cqut.edu.cn)

备注:赵明富(1964-),男,重庆人,工学博士,硕士生导师,教授,电子科技大学兼职博士导师,2003年于西安交通大学获得硕士学位,2007年于重庆大学获得博士学位,主要从事现代光电检测技术及仪器、生化信息获取与智能传感方面的研究

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引用该论文

ZHAO Ming-fu,ZHONG Nian-bing,LUO Bin-bin,HU Xin-yu,ZHONG Lian-chao. Optical fiber attenuated total reflection sensor for on-line measurement of biomass concentration[J]. Optics and Precision Engineering, 2010, 18(8): 1707-1714

赵明富,钟年丙,罗彬彬,胡新宇,钟连超. 用于生物量浓度在线检测的光纤衰减全反射传感器[J]. 光学 精密工程, 2010, 18(8): 1707-1714

被引情况

【1】钟年丙,廖强,朱恂,王永忠,陈蓉. 超声技术在石英光纤腐蚀中的运用. 光学 精密工程, 2012, 20(5): 988-995

【2】赵明富,韩汐,罗彬彬,王博思,全晓莉. 长周期光纤光栅的折射率梯度响应特性. 光学 精密工程, 2013, 21(2): 316-322

【3】袁博宇,李威,罗成名. 溶液浓度变化实时检测系统的设计. 光学 精密工程, 2014, 22(1): 18-23

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