基于强度法和相移法的光纤氧传感测量系统  

Study of Fiber Optical Oxygen Sensor System Based on Intensity and Phase-delay Detection

作　　者：柏云[1] 邓辉[1] 肖吉群[1] 吴青龙[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《仪表技术与传感器》2015年第2期60-63,共4页Instrument Technique and Sensor

基　　金：中国工程物理研究院发展基金项目(2011B0302054)

摘　　要：利用荧光猝灭原理检测氧浓度,构建了在线测量系统,可同时实现强度法测量和相移法测量。优选邻三（4,7-联苯-1,10-邻菲啰啉）二氯化钌为荧光指示剂,采用溶胶-凝胶法制备氧敏感膜,组装光纤氧传感探头。结果表明,氧浓度在0～100%范围内,荧光强度与氧浓度呈线性关系（R2〉0.99）;系统参数对相移法测量的影响明显,通过参数调控可进行系统优化实现低氧浓度的高精度检测,理论检测下限约为3 ppm。Oxygen content was simultaneously on-line measured by intensity and phase delay detection, based on fluorescence quenching.The oxygen-sensitive membrane was prepared by sol-gel, using tris（ 4,7 diphenyl- 1,10 phenanthroline ） ruthenium （ Ⅱ ） dichloride as indicator.The results indicate that the intensity of fluorescence shows linear relationship （R2 〉0.99）with oxygen con- tent in region of 0~ 100 %.System parameters significantly affected phase delay detection.Via parameters regulation,precision de- tection of oxygen content could achieve.The theoretical lower limit was 3 ppm.

关 键 词：荧光猝灭 光纤氧传感测量系统 强度法 相移法 

分 类 号：TN25[电子电信—物理电子学]