A dual-parameter optical fiber sensing device for monitoring copper ions/bacteria and its implementation method

Abstract

The patent of the present invention provides a dual-parameter optical fiber sensing device for monitoring copper ions / bacteria, which includes an ASE light source, an optical fiber coupler, a sensing unit, a copper ion / bacteria holding device, a photoelectric converter, and a signal processing module. The patent of the present invention uses optical fiber for sensing, and uses the principle of the Fab cavity to make the light emitted by the ASE light source generate an interference spectrum in the Fap cavity. Through the detection of the interference spectrum, copper ions / bacteria are measured, and the signal processing module is used to realize Digital output to achieve the purpose of displaying on the computer. The invention reduces the size of the sensing unit, increases the sensitivity of the sensing, reduces the cross influence of different parameters, and realizes the purpose of simultaneously monitoring copper ions / bacteria. At the same time, it can be output on the host, realizing real-time monitoring of copper ions / bacteria.

Description

Technical field [0001] The present invention is in the field of monitoring biosensor, particularly, to a copper ion monitoring / bacterial two variable optical sensing means. Background technique [0002] At present, the development of bio-sensing system of gradual improvement, monitoring devices biological systems also will be more perfect, which in biological systems, the copper ion / bacteria will have a very high impact on the biological system, copper ions on biological systems / bacteria monitoring is very important. Currently, there are implemented method of using an optical apparatus and method of copper ion / monitoring of many bacteria. [0003] E.g. T.Liu et al (T.Liu, C.Zhang, S.Wang, J.Jiang, K.Liu, X.Zhang, X.Wang, Simultaneous Measurement of Pressure and Temperature Based on A djustableLineScanning Polarized Low-Coherence Interferometry with Compens ationPlate, IEEEPhotonics Journal, 2018,10 (4), 1-9.) proposed based on the measured temperature and pressure sensing...

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Problems solved by technology

[0004] Although the above-mentioned researchers use the principle of Fappel cavity to measure temperature, or use magnetostrictive material and fiber Bragg grating to measure current and magnetic field, although the measurement device has great advantages in safety, measurement range, measurement accuracy and device portability. Improvement; however, there is no significant advantage in monitoring dual parameters or the structure and material itself, and because both temperature and pressure change on the same part, simultaneous measurement will have cross-effects; T.Liu et al. The measurement parameters are not At the same time; the preparation method adopted by Xujie Su is complicated; the giant magnetostrictive material adopted by H.Zhao et al. is to use epoxy resin to stick on the optical Bragg grating, and the adhesive affects the sensitivity of the material, which in turn affects the sensitivity of monitoring. Moreover, the setting of the magnetic circuit reduces the portability of the device; W. Li et al. used two optical fiber fusion methods, because the refractive index cannot be completely the same, which has an impact on the interference signal and affects the measurement accuracy; the material selected by Li Han Chen is sensitive Low sex

[0005] Therefore, in view of the problems of low sensitivity, poor long-term operation stability, easy cross-influence, and inability to simultaneously measure two parameters in the existing technology, a high-sensitivity, good stability, and simultaneous monitoring of copper ion / bacteria dual-parameter optical fiber sensor is proposed. Device and implementation method

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