Liquid physical and chemical parameter measuring device based on fluorescence analysis

A technology for physical and chemical parameters and measurement devices, applied in fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of inaccurate measurement results, reduce fluorescence receiving efficiency, etc., to avoid mutual interference, avoid doping coupling, and improve system integration. Effect

Active Publication Date: 2014-10-08
邳州市景鹏创业投资有限公司
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Problems solved by technology

Since the fluorescence itself is very weak, the reception efficiency of the fluorescence will be greatly reduced
In addition, the main component of bubbles in water also contains oxygen molecules. Aquatic plants produce oxygen through photosynthesis. When the concentration of dissolved oxygen in water is saturate

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  • Liquid physical and chemical parameter measuring device based on fluorescence analysis

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[0021] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0022] Aiming at the deficiencies in the prior art, the present invention proposes a liquid physical and chemical parameter measurement device based on fluorescence analysis, which mainly includes the following three improvements: 1. A variety of fluorescent sensitive substances sensitive to different liquid physical and chemical parameters are integrated into one fluorescent sensitive element on, and use different optical bandpass filters to extract the fluorescence reflecting the corresponding physical and chemical parameter information, and then use the existing fluorescence analysis method to analyze the extracted fluorescence intensity, so as to realize the accurate measurement of multiple physical and chemical parameters at the same time measurement; 2. A physical defoaming device based on capillary structure is added, combined with the existing ch...

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Abstract

The invention discloses a liquid physical and chemical parameter measuring device based on fluorescence analysis, and belongs to the technical field of measurement. The measuring device disclosed by the invention mainly comprises the following improvements: (1) integrating a plurality of fluorescent sensitive materials which are sensitive to different liquid physical and chemical parameters onto a fluorescent sensitive element, extracting fluorescence which reflects corresponding physical and chemical parameter information by utilizing different bandpass filters, and then analyzing the intensity of the extracted fluorescence, so as to accurately measure the various physical and chemical parameters; (2) additionally arranging a physical defoaming device based on a capillary structure, and combining with an existing chemical defoaming method, so as to effectively eliminate the influence of bubbles in to-be-measured liquid on the measuring accuracy; and (3) performing light path connection among a fluorescence excitation source, the fluorescent sensitive element and a fluorescence receiving module by utilizing a three-port optical circulator, so as to avoid doping coupling between exciting light and the fluorescence, and processing the exciting light and the fluorescence by utilizing an optical fiber collimator, so as to further improve the measuring accuracy.

Description

technical field [0001] The invention relates to a liquid physical and chemical parameter measurement device, in particular to a liquid physical and chemical parameter measurement device based on fluorescence analysis, which belongs to the field of measurement technology. Background technique [0002] The objects of analysis and monitoring in the environment are often trace and ultra-trace substances, and many of them have time and space characteristics, so the requirements for measurement technology are getting higher and higher. With the development of optical sensors, optical measurement methods are widely used in the field of measurement technology. Fluorescence analysis has been developed rapidly in recent years due to its advantages of high sensitivity, low detection limit and good accuracy. For example, this method can be widely used in online water quality monitoring. [0003] Dissolved oxygen is a necessary condition for the survival of aquatic animals and plants. T...

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Application Information

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IPC IPC(8): G01N21/64
Inventor 常建华朱成刚郭跃王志丹桂诗信
Owner 邳州市景鹏创业投资有限公司
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