Water quality detection sensor

A water quality detection and sensor technology, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of inability to monitor eutrophication and inability to effectively control the cause of cyanobacteria, and achieve the effect of saving cost and size space

Inactive Publication Date: 2011-07-20
无锡荣兴科技有限公司
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Problems solved by technology

[0004] In the past technology, although the concentration of cyanobacteria in lake water can be effectively monitored, the real cause of cyanobacteria ...

Method used

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  • Water quality detection sensor
  • Water quality detection sensor

Examples

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Embodiment 1

[0037] Such as Figure 4 As shown, it includes a first illumination light source 1, a second illumination light source 12, a sample cell 2, a first collimator lens 10, a second collimator lens 11, a dichroic beam splitter 13, a control module 14, and a first photodetector 7. A second photodetector 17 , a focusing lens 15 , an optical filter 16 , a first long-pass color filter 16 - 1 , a second long-pass color filter 16 - 2 , a signal acquisition and processing module 18 and a motor 19 .

[0038] In the present invention, the first illuminating light source 1 and the second illuminating light source 12 respectively adopt light-emitting diodes.

[0039] Described optical filter 16 comprises a 400nm first long-pass color filter 16-1 and a 640nm second long-pass color filter 16-2, and the first 400nm long-pass color filter 16-1 is placed in the second photodetector Light inlet of device 17, the second long-pass color filter 16-2 of 640nm is only placed on the light inlet of secon...

Embodiment 2

[0042] Such as Image 6 As shown, it includes a first illumination light source 1, a second illumination light source 12, a sample cell 2, a first collimator lens 10, a second collimator lens 11, a dichroic beam splitter 13, a control module 14, and a first photodetector 7. The second photodetector 17 , the focusing lens 15 , the optical filter 16 , the first long-pass color filter 16 - 1 and the signal acquisition and processing module 18 .

[0043] The sensor is sealed with a well-sealed cover, and then there are only two kinds of wavelengths of stray light inside, which wavelengths are respectively the wavelengths of the first light source 1 (LED) and the second light source 12 (LED). Then it is only necessary to cut off the light in a region near these two wavelengths with a first long-pass color filter 16-1, and let the fluorescence in other wavelength bands pass through, so as to eliminate two kinds of background light and transmit two kinds of background light. For the...

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Abstract

The invention relates to a water quality detection sensor. In the sensor, a first irradiation light source is arranged on the left of a first collimating lens, a dichroic beam splitter is arranged above a second collimating lens, a second irradiation light source is arranged below the second collimating lens, and the first irradiation light source and the second irradiation light source are connected with a control module respectively; a sample pond is arranged between a first photoelectric detector and the dichroic beam splitter; a focusing lens is arranged in the direction which is perpendicular to irradiation light; an optical filter is arranged below the focusing lens, and is positioned at a light inlet of a second photoelectric detector; signal output ends of the first photoelectric detector and the second photoelectric detector are connected with a signal acquisition and processing module; and the signal acquisition and processing module is used for calculating the content of chormophoric dissolved organic matters and the content of phycocyanin of a water sample. In the water quality detection sensor, the concentration of the chormophoric dissolved organic matters in water is detected while the concentration of cyanophytes is detected to detect the eutrophication of lake and perform early warning on the breakout of the cyanophytes.

Description

technical field [0001] The invention relates to a sensor for detecting water quality, in particular to a sensor for detecting algae and colored soluble organic matter in water. Background technique [0002] Lakes are one of the most important water resources for human beings, and they are also the population and industrial gathering areas of our country around the lakes. Due to the impact of human activities, the eutrophication of lakes has become increasingly serious this year, and the resource attributes of large and medium-sized lakes such as Taihu Lake, Chaohu Lake, Dianchi Lake, Dongting Lake, Hongze Lake, and Baiyangdian Lake are threatened. The direct consequence of eutrophication is the occurrence of cyanobacteria blooms, which broke out in Taihu Lake in 2008 and seriously affected the normal life of surrounding residents. How to carry out accurate early warning before the outbreak of cyanobacteria bloom becomes very important. Continuous monitoring of cyanobacteri...

Claims

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Application Information

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IPC IPC(8): G01N21/27
Inventor 楚建军邵建辉陈力孔巢城
Owner 无锡荣兴科技有限公司
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