CN107014775A - Based on optical water body concentration field measurement method - Google Patents
Based on optical water body concentration field measurement method Download PDFInfo
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- CN107014775A CN107014775A CN201710120000.9A CN201710120000A CN107014775A CN 107014775 A CN107014775 A CN 107014775A CN 201710120000 A CN201710120000 A CN 201710120000A CN 107014775 A CN107014775 A CN 107014775A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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Abstract
The present invention relates to the technical field of water body concentration field measurement method, disclose based on optical water body concentration field measurement method, comprise the following steps：1), calibration normal concentration refraction table；2), water body to be measured is placed in transparent water tank, the irradiation side wall of water tank is provided with the flase floor that Longitudinal extending is arranged, flase floor is formed between the horizontal grate gap of multiple longitudinally spaced arrangement parallel arrangements, adjacent horizontal grate gap and forms level shadow plate；3), the parallel rays irradiation irradiation side wall sent using source of parallel light；The shooting side wall of the water tank is shot using video camera, analysis image is formed；4) image procossing, is carried out to analysis image and projection straight line is fitted, the refractive index for the parallel rays being calculated through in the horizontal grate gap：5), correspondence normal concentration refraction table, obtains the layering measurement of correspondence water body concentration, and then asks for the measurement of whole water body concentration field.
Description
Technical field
Surveyed the present invention relates to the technical field of water body concentration field measurement method, more particularly to based on optical water body concentration field
Amount method.
Background technology
Research environment pollution problem, people are most concerned with contaminant density field in distribution of the pollutant in space, water body
It is to weigh the important indicator that water body is contaminated degree, or, carrying out hydraulics and Ecology etc. with the method for physical model
During scientific research, the concentration of material and distribution are most important in measurement water body, therefore, and water body concentration field measurement method turns into current
One of focus of environmentalist's research.
In the prior art, the effective means of measurement water body concentration field is still lacked, traditional single-point measurement method then easy shadow
Ring fluidised form, and the measurement of water body concentration field relatively difficult to achieve.
The content of the invention
It is an object of the invention to provide based on optical water body concentration field measurement method, it is intended to which it is difficult in the prior art to solve
The problem of to realize to water body concentration field measurement method.
The present invention is achieved in that based on optical water body concentration field measurement method, is comprised the following steps：
1), calibration normal concentration refraction table；
2), water body to be measured is placed in transparent water tank, the transparent side wall formation irradiation side wall of the water tank, institute
Another transparent side wall formation for stating water tank shoots side wall, is provided with the irradiation side wall of the water tank along the water tank Longitudinal extending
The flase floor of arrangement, the flase floor is formed with multiple horizontal grates along the longitudinally spaced arrangement parallel arrangement of the water tank and stitched
Level shadow plate is formed between gap, and the adjacent horizontal grate gap；
3), the parallel rays sent outside the irradiation side wall of the water tank using source of parallel light irradiates the irradiation of the water tank
Side wall, parallel rays passes through multiple horizontal grate gaps and water body, exposes to the shooting side wall of the water tank；Described
Video camera is arranged outside the shooting side wall of water tank, the shooting side wall of the water tank is shot using video camera, analysis image is formed；
4) image procossing, is carried out to analysis image and projection straight line is fitted, and according to being calculated through below equation
The refractive index of parallel rays in horizontal grate gap：
Wherein, Δ H be through the horizontal grate gap parallel rays longitudinal direction offset, width is described
Width；
5), according to step 4) refractive index calculated, correspondence step 1) in normal concentration refraction table, obtain correspondence water
The layering measurement of bulk concentration, and then ask for the measurement of whole water body concentration field.
Further, in the step 1) in, it is molten to a variety of normal concentrations by configuring multiple standards strength solution
Liquid carries out concentration refractive index calibration, then carries out curve fitting, and obtains concentration refractive index curve, and then obtain normal concentration refractive index
Table.
Further, multiple horizontal light sources are sequentially longitudinally arranged outside the irradiation side wall of the water tank.
Further, multiple horizontal light sources sequentially with multiple positive alignments in horizontal grate gap.
Further, the position for video camera is in the top of the shooting side wall of the water tank, and deviates the water tank outwardly
Side wall cloth is shot to put.
Further, in the step 4) in, to the video camera shoot analysis image carry out image procossing include according to
Image is analyzed described in ordered pair and carries out image denoising, image binaryzation and image Hough transform.
Further, the analysis image after image procossing carries out projection straight line fitting again.
Compared with prior art, the water body concentration field measurement method that the present invention is provided is to be based on light reaction, by advance
Calibration normal concentration refraction table, multiple horizontal grate gaps of irradiation side wall are radiated at by the parallel rays at source of parallel light hair
In, multiple parallel rays through horizontal grate gap recycle video camera to shoot directional light through reflecting in water body
Line is shooting the image of side wall formation, forms analysis image, using to analysis image procossing, calculates the refraction of parallel rays
Rate, and then contrasted using with normal concentration refraction table, the layering concentration of water body is obtained, and then water body concentration field can be obtained.
Brief description of the drawings
Fig. 1 is the normal concentration refraction example provided in an embodiment of the present invention based on optical water body concentration field measurement method
Constant current journey；
Fig. 2 is the measurement procedure provided in an embodiment of the present invention based on optical water body concentration field measurement method；
Fig. 3 is the simple schematic diagram provided in an embodiment of the present invention based on optical water body concentration field measurement structure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The realization of the present invention is described in detail below in conjunction with specific accompanying drawing.
Shown in reference picture 1~3, the preferred embodiment provided for the present invention.
The present embodiment provide based on optical water body concentration field measurement method, for the concentration field progress to various water bodys
Measurement, for example, can be water body for the water body or some other addition predetermined substance being pollutant-contaminated etc., not only
It is limited to the water body of certain utilization.
Based on optical water body concentration field measurement method, step specific as follows：
1), shown in reference picture 1, calibration normal concentration refraction table；
2), shown in reference picture 3, water body to be measured is placed in transparent water tank 11, a transparent side wall shape of water tank 11
Into irradiation side wall, another transparent side wall formation of water tank 11 shoots side wall 111, is provided with the irradiation side wall of water tank 11 along water tank
The flase floor of 11 Longitudinal extendings arrangement, the flase floor is formed with multiple HORIZONTAL PLAIDs along the longitudinally spaced arrangement parallel arrangement of water tank 11
Level shadow plate 112 is formed between grid gap 113, and horizontal grate gap 113；Certainly, horizontal grate gap 113 can be for light
Line is passed through, under the blocking of level shadow plate 112, and light then cannot pass through level shadow plate 112.
3), shown in reference picture 3, the parallel rays sent outside the irradiation side wall of water tank 11 using source of parallel light 13 irradiates saturating
The irradiation side wall of bright water tank 11, parallel rays passes through multiple horizontal grate gaps 113 of irradiation side wall, and due to various concentrations
Water body is different to the refractive index of light, so, and the refraction through the light in multiple horizontal grate gaps 113 then corresponds to difference；
In the outer transparent shooting side wall arranged video camera 12, water tank 11 is shot using video camera 12 of the shooting side wall 111 of water tank 11
111, form analysis image；
4) image procossing, is carried out to analysis image and projection straight line is fitted, and water is radiated at according to below equation calculating
The refractive index of parallel rays in flat grid gap 113：
Wherein, Δ H is offset of the parallel rays in longitudinal direction for passing through horizontal grate gap 113, and width refers to water tank 11
Width；
5), according to step 4) refractive index calculated, correspondence step 1) in normal concentration refraction table, then can obtain
The layering measurement of correspondence water body concentration, and then the measurement of whole water body concentration field can be asked for.
The water body concentration field measurement method of above-mentioned offer is to be based on light reaction, is reflected by advance calibration normal concentration
It is multiple to pass through in table, multiple horizontal grate gaps 113 that irradiation side wall is radiated at by the parallel rays at the hair of source of parallel light 13
The parallel rays in horizontal grate gap 113 is being clapped through reflecting in water body, recycling video camera 12 to shoot parallel rays
The image of the formation of side wall 111 is taken the photograph, analysis image is formed, using to analysis image procossing, the refractive index of parallel rays is calculated, enters
And utilize and contrasted with normal concentration refraction table, the layering concentration of water body is obtained, and then water body concentration field can be obtained.
In above-mentioned steps 1) in, by configuring multiple standards strength solution, concentration folding is carried out to various normal concentration solution
Rate calibration is penetrated, then is carried out curve fitting, concentration refractive index curve is obtained, and then obtain normal concentration refractive index table.
In step 2) in, according to actual needs, it can suitably adjust horizontal grate gap 113 and level shadow plate 112
Width, and then for be actually needed measurement water body the need for, carry out water body measurement of concetration.Generally, 1mm can be selected
Wide horizontal grate gap 113 and 5mm level shadow plate 112, it is therefore an objective to make parallel rays from horizontal grate gap 113
Pass through, and be not passed through level shadow plate 112.
In step 3) in, using multiple sources of parallel light 13 being sequentially longitudinally arranged, area source is formed, the area source, which is sent, is in
The parallel rays being longitudinally arranged, and then each horizontal grate gap 113 of correspondence can be realized, there is parallel rays to pass through.
Specifically, multiple sources of parallel light 13 sequentially with the positive alignment in multiple horizontal grate gaps 113, so, it is ensured that flat
Row light can accurately pass through horizontal grate gap 113.
In addition, when needing the water body to flowing and relatively long distance to carry out measurement of concetration, then multiple water tanks can be passed through
The mode of 11 sequentially lateral connections.
In step 3) in, video camera 12 is in the top of the shooting side wall 111 of water tank 11, and deviates the bat of water tank 11 outwardly
Side wall 111 is taken the photograph, so, video camera 12 is downwardly inclined the shooting side wall 111 for shooting water tank 11.
In the present embodiment, in step 4) in, image procossing is carried out including sequentially right to the analysis image that video camera 12 is shot
Analyze image and carry out image denoising, image binaryzation and image Hough transform, the analysis image after image procossing enters again
Row projection straight line is fitted.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (7)
1. based on optical water body concentration field measurement method, it is characterised in that comprise the following steps：
1), calibration normal concentration refraction table；
2), water body to be measured is placed in transparent water tank, the transparent side wall formation irradiation side wall of the water tank, the water
Another transparent side wall formation of case shoots side wall, is provided with along the water tank Longitudinal extending and arranges on the irradiation side wall of the water tank
Flase floor, the flase floor be formed with it is multiple along the water tank it is longitudinally spaced arrangement parallel arrangement horizontal grate gaps, and
Level shadow plate is formed between the adjacent horizontal grate gap；
3), the parallel rays sent outside the irradiation side wall of the water tank using source of parallel light irradiates the irradiation side of the water tank
Wall, parallel rays passes through multiple horizontal grate gaps and water body, exposes to the shooting side wall of the water tank；In the water
Video camera is arranged outside the shooting side wall of case, the shooting side wall of the water tank is shot using video camera, analysis image is formed；
4) image procossing, is carried out to analysis image and projection straight line is fitted, and the level is calculated through according to below equation
The refractive index of parallel rays in grid gap：
Wherein, Δ H be through the horizontal grate gap parallel rays longitudinal direction offset, width is described width；
5), according to step 4) refractive index calculated, correspondence step 1) in normal concentration refraction table, obtain correspondence water body dense
The layering measurement of degree, and then ask for the measurement of whole water body concentration field.
2. optical water body concentration field measurement method is based on as claimed in claim 1, it is characterised in that in the step 1)
In, by configuring multiple standards strength solution, concentration refractive index calibration, then march are carried out to a variety of normal concentration solution
Line is fitted, and obtains concentration refractive index curve, and then obtain normal concentration refractive index table.
3. optical water body concentration field measurement method is based on as claimed in claim 1, it is characterised in that in the photograph of the water tank
Penetrate outside the wall of side and be sequentially longitudinally arranged multiple horizontal light sources.
4. optical water body concentration field measurement method is based on as claimed in claim 3, it is characterised in that multiple horizon lights
Source sequentially with multiple positive alignments in horizontal grate gap.
5. as claimed in claim 1 be based on optical water body concentration field measurement method, it is characterised in that the position for video camera in
The top of the shooting side wall of the water tank, and deviate the shooting side wall cloth of the water tank outwardly and put.
6. as described in any one of claim 1 to 5 based on optical water body concentration field measurement method, it is characterised in that in institute
State step 4) in, image procossing is carried out to the analysis image that the video camera is shot to be included sequentially scheming the analysis image
As denoising, image binaryzation and image Hough transform.
7. optical water body concentration field measurement method is based on as claimed in claim 6, it is characterised in that after image procossing
Analysis image carry out projection straight line fitting again.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001076A (en) * | 2018-06-11 | 2018-12-14 | 中国矿业大学 | A kind of concentration of emulsion used on-line detecting system and method based on image recognition |
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| CN2551992Y (en) * | 2002-06-14 | 2003-05-21 | 清华大学 | Brine concentration measurer |
| CN102507136A (en) * | 2011-10-19 | 2012-06-20 | 河海大学 | Riparian zone simulating and monitoring system |
| CN102519927A (en) * | 2011-12-09 | 2012-06-27 | 中国水利水电科学研究院 | Multichannel fluorescence test system and method of water concentration field |
| CN202533370U (en) * | 2012-02-29 | 2012-11-14 | 中国矿业大学(北京) | Emulsion concentration measurement device |
| US8831700B2 (en) * | 2006-03-17 | 2014-09-09 | Glt Acquisition Corp. | Apparatus and method for creating a stable optical interface |
| CN205691515U (en) * | 2016-06-07 | 2016-11-16 | 上海海洋大学 | Experimental trough contaminant density field test device |
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2017
- 2017-03-02 CN CN201710120000.9A patent/CN107014775B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551992Y (en) * | 2002-06-14 | 2003-05-21 | 清华大学 | Brine concentration measurer |
| US8831700B2 (en) * | 2006-03-17 | 2014-09-09 | Glt Acquisition Corp. | Apparatus and method for creating a stable optical interface |
| CN102507136A (en) * | 2011-10-19 | 2012-06-20 | 河海大学 | Riparian zone simulating and monitoring system |
| CN102519927A (en) * | 2011-12-09 | 2012-06-27 | 中国水利水电科学研究院 | Multichannel fluorescence test system and method of water concentration field |
| CN202533370U (en) * | 2012-02-29 | 2012-11-14 | 中国矿业大学(北京) | Emulsion concentration measurement device |
| CN205691515U (en) * | 2016-06-07 | 2016-11-16 | 上海海洋大学 | Experimental trough contaminant density field test device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001076A (en) * | 2018-06-11 | 2018-12-14 | 中国矿业大学 | A kind of concentration of emulsion used on-line detecting system and method based on image recognition |
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Inventor after: Chen Jun Inventor after: Chen Ruozhou Inventor after: Lin Jun Inventor after: Wang Lei Inventor after: Xing Fangliang Inventor after: Luo Chaolin Inventor after: Qiu Jinwei Inventor after: Wang Tianyi Inventor after: Guo Zebin Inventor before: Luo Chaolin Inventor before: Lin Jun Inventor before: Chen Ruozhou |
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