摘要
传统方法分析光纤传感器的医学多组分时,忽略医学多组分气体在吸收能量跃迁过程出现光谱线强度减弱的现象,存在医学多组分气体浓度检测结果不精确的弊端,提出新的近红外可调谐光纤激光器的医学多组分检测方法,基于医学多组分气体光声光谱检测原理,分析医学多组分气体近红外光谱,选择医学多组分检测气体及其测量谱线;在此基础上构建光声信号幅值与医学多组分气体吸收谱线模型,运算光纤激光器的各组分医学气体浓度。实验结果说明,所提方法能精确检测医学多组分气体浓度,检测H2O、C2H2、CO和CO2气体的灵活性分别为72×10-6、4×10-6、6×10-6和6×10-6,灵活性比支持向量机方法高。
When using traditional methods to analyze the medical multi-component of fiber optic sensors,ignoring the phenomenon that the strength of the spectral lines weakened during the energy absorption transition of medical multi-component gases,there was an imprecise result of the medical multi-component gas concentration detection.A new medical multi-component detection method for near-infrared tunable fiber lasers is proposed.Based on the principle of medical multi-component gas photoacoustic spectroscopy,medical multi-component gas near-infrared spectroscopy is analyzed,and medical multi-component gas detection gas and its measured spectral lines are selected.On this basis,the optical acoustic signal amplitude and the medical multicomponent gas absorption spectrum model are constructed to calculate the medical gas concentration of each component of the fiber laser.The experimental results show that the proposed method can accurately detect the concentration of medical multi-component gases,and the flexibility to detect H2 O,C2H2,CO and CO2 gases is 72×10-6,4×10-6,6×10-6,and 6×10-6,flexibility is higher than the support vector machine method.
作者
于大海
姜丹
李楠
YU DaHai;JIANG Dan;LI Nan(School of Electrical Information,Changchun Guanghua University,Changchun 130033,China;The Second Hospital of Jilin University,Changchun 130000,China;Army Armored Military Academy Sergeant School,Changchun 130000,China)
出处
《激光杂志》
北大核心
2019年第8期176-180,共5页
Laser Journal
基金
吉林省高等教育学会基金项目(No.JLJX2018B43)
吉林教育科学基金项目(No.GH180983)
长春光华学院青年基金基金项目(No.QNJJ160013)
关键词
近红外
可调谐
光纤激光器
医学多组分
检测
红外光谱
near infrared
tunable
fiber laser
medical multicomponent
testing
infrared spectrum
