CN105300930A - Dual-channel water turbidity detection method - Google Patents
Dual-channel water turbidity detection method Download PDFInfo
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- CN105300930A CN105300930A CN201510875678.9A CN201510875678A CN105300930A CN 105300930 A CN105300930 A CN 105300930A CN 201510875678 A CN201510875678 A CN 201510875678A CN 105300930 A CN105300930 A CN 105300930A
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- water quality
- turbidity detection
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Abstract
The invention relates to a water detection instrument, in particular to a water turbidity detection instrument which is mainly used for water resource quality detection, detection on tap water discharge and plant effluent discharge, and the like. A light source emits white lights, light rays become parallel lights approximate to a zero vision field after passing through a collimating lens, the light rays enter a sample pool of a rectangular solid in a manner of being vertical to an incident window of the sample pool, the light rays are scattered by suspended solids in a solution, one part of the scattered lights enter a convergent lens, the light rays enter a light splitter and then are divided into two light beams on a light-splitting surface, one path of light rays enter a photoelectric detector after being subjected to light filtration by virtue of a 450nm light filter, and the other path of light rays enter the photoelectric detector after being subjected to light filtration by virtue of a 650nm light filter. The relative light intensity of the two paths of lights can be measured by a follow-up detection circuit; furthermore, by virtue of calculation of a follow-up operational circuit, the water turbidity can be obtained.
Description
Technical field
The present invention relates to water quality detection instrument, particularly a kind of water turbidity detecting instrument.Be mainly used in water resource quality to detect, tap water, plant effuent also can be used to discharge and detect.
Background technology
Along with the development of industrialization and urbanization, the living environment of the mankind is day by day severe, and the pollution of water resource is one of contamination class causing the hugest injury to the health of the mankind.Current people recognize the importance of water resource deeply, and take many precautionary measures, and water resource, the effective of plant effuent discharge are one of necessary requirements with accurately detecting in fact.
Water turbidity is one of index of water resource quality, mainly adopts chemical method, photoelectric analysis to carry out water turbidity detection at present.The cost of chemical method is lower, but the life-span is shorter, can not Real-Time Monitoring, and therefore photoelectric analysis replaces chemical method is a kind of technological trend to water turbidity inspection.
The ultimate principle of photoelectric analysis is, incide in the fixing sample cell of a length by the directional light of a branch of specific wavelength particular energy, by there is scattering after the water sample in sample cell in light, part scattered light can be got on the photodetector of off-axis located, then by contrasting the energy of scattered light and incident parallel light, the ratio of above-mentioned energy is directly proportional to water turbidity, therefore can be calculated the turbidity of sample by microprocessor chip.But the method is easily disturbed and affects accurate detection, in water quality, there is the impact of the factors such as non-leuco solvent as being subject to.
Summary of the invention
The object of the present invention is to provide for a kind of binary channels water quality turbidity detection method.
Basic conception of the present invention is: utilize nonmonochromatic light as light source, incides in the fixing sample cell of volume, then detect the energy of the scattering of the light of two kinds of wavelength after collimating.Because there is the scattared energy value of two different wavelengths of light, the impact that there is non-leuco solvent obviously can be got rid of in water quality.
Technical solution of the present invention is: utilize nonmonochromatic light as light source, incide in the fixing sample cell of volume after collimating, becoming the direction of miter angle to place receiving light path and photodetector with optical axis, receiving light path comprises convergent mirror, optical filter and spectroscope three kinds of optical elements; After light scatters out from sample cell, assemble through convergent mirror, the light path assembled places spectroscope, spectroscope can be divided into two-way light the light beam assembled, one tunnel arrives photodetector after an optical filter, another road arrives photodetector after an optical filter, and the element of this two-way light is about spectroscopical front surface conjugation.
Described light source is nonmonochromatic light;
Described collimation lens set is made up of 1 to 2 lens;
Described sample cell is rectangular parallelepiped;
Described convergent mirror is made up of 1 lens;
Described spectroscope is five or five light splitting plain films;
Described optical filter is narrow band pass filter, and the filter wavelength of two-way light is different;
Described photodetector is photoelectric diode or photoelectric cell.
Compared with present technology, advantage of the present invention:
1) water quality can be monitored in real time;
2) measurement precision is improved;
3) be not easily interfered;
By giving your description and example below, and also by appended claim, embodiments of the present invention and benefit thereof will become obvious to those skilled in the art.
Accompanying drawing explanation
In example below, in more detail embodiments of the present invention will be described by reference to accompanying drawing, wherein: Fig. 1 schematically shows the principle of binary channels water quality turbidity detection method.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Referring to Fig. 1, light source (10) sends white light, light becomes the directional light close to zero visual field after collimating mirror (20), light enters the sample cell (30) of rectangular parallelepiped perpendicular to the entrance window of sample cell, the suspension of light in solution carries out scattering, wherein a part of scattered light enters convergent lens (40), light enters spectroscope (50), light splitting surface is divided into two-beam, wherein a road light through the optical filter (60) of 450nm carry out optical filtering laggard enter photodetector (70), another kind of light through the optical filter (80) of 650nm carry out optical filtering laggard enter photodetector (90).The relative light intensity value of above-mentioned two-way light can be measured by follow-up testing circuit.Further, then the turbidity of detected water quality can be drawn through the calculating of subsequent arithmetic circuit.
The particular implementation of above-mentioned reference described by accompanying drawing is only exemplary, and is not intended to limit scope of the present invention, and this scope is determined by appending claims.
Claims (8)
1. binary channels water quality turbidity detection method, utilize nonmonochromatic light as light source, incide after collimating in the fixing sample cell of volume, becoming the direction of miter angle to place receiving light path and photodetector with optical axis, receiving light path comprises convergent mirror, optical filter and spectroscope three kinds of optical elements; After light scatters out from sample cell, assemble through convergent mirror, the light path assembled places spectroscope, spectroscope can be divided into two-way light the light beam assembled, one tunnel arrives photodetector after an optical filter, another road arrives photodetector after an optical filter, and the element of this two-way light is about spectroscopical front surface conjugation.
2. binary channels water quality turbidity detection method according to claim 1, is characterized in that described light source is nonmonochromatic light.
3. binary channels water quality turbidity detection method according to claim 1, is characterized in that described collimation lens set is made up of 1 to 2 lens.
4. binary channels water quality turbidity detection method according to claim 1, is characterized in that described sample cell is rectangular parallelepiped.
5. binary channels water quality turbidity detection method according to claim 1, is characterized in that described convergent mirror is made up of 1 lens.
6. binary channels water quality turbidity detection method according to claim 1, is characterized in that described spectroscope is five or five light splitting plain films.
7. binary channels water quality turbidity detection method according to claim 1, is characterized in that described optical filter is narrow band pass filter, and the filter wavelength of two-way light is different.
8. binary channels water quality turbidity detection method according to claim 1, is characterized in that described photodetector is photoelectric diode or photoelectric cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510875678.9A CN105300930A (en) | 2015-12-04 | 2015-12-04 | Dual-channel water turbidity detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510875678.9A CN105300930A (en) | 2015-12-04 | 2015-12-04 | Dual-channel water turbidity detection method |
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| CN105300930A true CN105300930A (en) | 2016-02-03 |
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| CN201510875678.9A Pending CN105300930A (en) | 2015-12-04 | 2015-12-04 | Dual-channel water turbidity detection method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324237A (en) * | 2016-08-18 | 2017-01-11 | 北京乐普医疗科技有限责任公司 | Scanning device for quantitative fluorescence immunoassay |
| CN108318457A (en) * | 2018-01-19 | 2018-07-24 | 华北水利水电大学 | The detection device of water turbidity |
| CN109724936A (en) * | 2019-02-21 | 2019-05-07 | 福州普贝斯智能科技有限公司 | A kind of water quality spectroanalysis instrument |
| CN109916813A (en) * | 2019-03-16 | 2019-06-21 | 苏州雷博亚仪器有限公司 | A kind of nephelometric analysis light path device |
| CN112782097A (en) * | 2020-12-21 | 2021-05-11 | 中国科学院合肥物质科学研究院 | Liquid turbidity measuring device and method based on convolutional neural network |
-
2015
- 2015-12-04 CN CN201510875678.9A patent/CN105300930A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324237A (en) * | 2016-08-18 | 2017-01-11 | 北京乐普医疗科技有限责任公司 | Scanning device for quantitative fluorescence immunoassay |
| CN106324237B (en) * | 2016-08-18 | 2018-03-06 | 北京乐普医疗科技有限责任公司 | A kind of fluorescence immunoassay quantitative analysis scanning means |
| CN108318457A (en) * | 2018-01-19 | 2018-07-24 | 华北水利水电大学 | The detection device of water turbidity |
| CN109724936A (en) * | 2019-02-21 | 2019-05-07 | 福州普贝斯智能科技有限公司 | A kind of water quality spectroanalysis instrument |
| CN109916813A (en) * | 2019-03-16 | 2019-06-21 | 苏州雷博亚仪器有限公司 | A kind of nephelometric analysis light path device |
| CN112782097A (en) * | 2020-12-21 | 2021-05-11 | 中国科学院合肥物质科学研究院 | Liquid turbidity measuring device and method based on convolutional neural network |
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Application publication date: 20160203 |
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