CN201497707U - Water eutrophication image acquisition device and hierarchical monitor system - Google Patents
Water eutrophication image acquisition device and hierarchical monitor system Download PDFInfo
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- CN201497707U CN201497707U CN 200920222822 CN200920222822U CN201497707U CN 201497707 U CN201497707 U CN 201497707U CN 200920222822 CN200920222822 CN 200920222822 CN 200920222822 U CN200920222822 U CN 200920222822U CN 201497707 U CN201497707 U CN 201497707U
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Abstract
The utility model discloses a water eutrophication image acquisition device and a hierarchical monitor system. The image acquisition device comprises: LED lamps emitting light in particular wavelength, which are uniformly distributed around a light filter and used for emitting light in particular wavelength; the light filter intercepting all the lights except the light in particular wavelength, which is inlaid on the image acquisition device and used for intercepting all the lights except the light in particular wavelength in order to acquire optical images; and a CCD light sensor, which is mounted on the image acquisition device and used for converting the optical images transmitted onto the surface of the CCD light sensor into electric signals. The image acquisition device adopting the technical proposal can rapidly acquire images with high spatial resolution and high time resolution, achieves the purpose of low cost of equipment and convenient operation and can replace laboratory analysis methods or provide auxiliary support for the laboratory analysis methods, in addition, the device arranges sampling points reasonably, reduces the use amount of chemical agents and overcomes the defect which is present in remote sensing satellite data acquisition.
Description
Technical field
The utility model relates to the body eutrophication research field, is specifically related to a kind of body eutrophication image collecting device and classified Monitoring system.
Background technology
China's lake eutrophication incident is outburst again and again in recent years, and lake aquatic attitude environment, resident living environment, economic development etc. have all been brought certain restriction.From the whole country, the lake, city all has been in serious rice-nutrient or moderate eutrophication state, and most big-and-middle-sized lakes have all possessed the conditioned disjunction that eutrophication takes place and have been in the eutrophication state, and blue-green algaes such as Taihu Lake, Chaohu, Dian Chi frequently break out.After the fresh water eutrophication, the clad can thing waterborne " wawter bloom " that algae or planktonic organism cause is frequent to be occurred, and the drinking water source is on the hazard, and the algae toxin influences aquatic organism and human beings'health by food chain, brings tremendous loss or disaster for the mankind and nature.Reinforcement is set up a cover horizontal monitoring method system of efficient water eutrophication and technical scheme and is pressed for the strick precaution and the control of body eutrophication.
At present, body eutrophication evaluation and monitoring that China carries out, mainly sample with water body, multinomial ecological factor investigation, the lab analysis of key index is main, and proposes principal component analysis (PCA) nutrition degree method (step analysis), related weighing nutritional status index method body eutrophication analyzing and evaluating pattern.Along with improving constantly of the sensor performance of remote sensing satellite, Chinese scholars begins to utilize the remote sensing means to carry out water quality assessment work gradually,
Yet, internal water bulk optics characteristic complexity, it not only is subjected to the influence of phytoplankton, under the superficial situation of water body, also will consider the influence of water-bed material to the water body optical property.Compare with the ocean water colour remote sensing of stepping into the practicability stage, the remote sensing monitoring of landlocked water body is a difficult point all the time.And because remote sensing satellite self is subjected to certain restriction in the time of monitoring, space, resolution etc.For example, the time in the same place of remote sensing satellite process is subjected to the restriction of its airborne period, the quality of images acquired is subjected to the restriction of weather conditions, when pressing for when some lakes are monitored, it is overhead that satellite is positioned at this point, but because weather conditions can not obtain image, so just need the next one to pass by the cycle, in addition because the height of satellite is higher relatively, light wave is comparatively serious in the energy loss midway from the water body to the sensor and various refraction, reflection, and image resolution ratio is lower.
Pixel seldom is made up of single and uniform atural object in the remote sensing image, all is the mixture of several atural objects generally.Therefore the spectral signature of pixel is not the spectral signature of single atural object in the image, but the mixing of several spectral characteristic of ground reflection.It causes puzzlement to decipher.In this case, no matter mixed pixel directly belongs to any typical feature, all is wrong, because it at least not exclusively belongs to this typical feature.
In addition, the method for utilizing the water body sampling chamber of experimentizing to analyze, for the extensive water body of distribution range, the rationality of sampling point distributions and the factors such as time of sampling are all most important, and sample also can change along with people's subjective behavior.Because the flowability of water body, single water body feature constantly of single-point can not be represented the situation of the whole basin of accurate reflection body eutrophication.To carry out the repeatedly sampling of same position for this reason, thereby the lab analysis result data is averaged.
From then on as can be seen, the body eutrophication classified Monitoring system of prior art can not satisfy fast, estimate efficiently, really requirement.
The utility model content
The purpose of this utility model is at the deficiencies in the prior art, and a kind of quick, efficient, true parsing that can reach body eutrophication is provided, and high body eutrophication image collecting device and the classified Monitoring system of image resolution ratio.
For achieving the above object, the utility model provides a kind of body eutrophication image collecting device, comprising:
Send the LED lamp of the light of specific wavelength, be evenly distributed on around the optical filter, be used for as light source;
The optical filter of the light beyond described specific wavelength is embedded on the image collecting device, to gather optical imagery;
The CCD photoreceptor is installed on the image collecting device, and the optical imagery that is used for being transmitted to CCD photoreceptor surface is converted to electric signal.
Wherein, image collecting device can also comprise analog to digital converter, is connected with described CCD photoreceptor, is used for electric signal is carried out analog to digital conversion.
Wherein, image collecting device can also comprise DSP (digital signal processing, digital signal processing) chip, is connected with described analog to digital converter, is used for the conversion of signals after the analog to digital converter conversion is become the picture signal of suitable Computer Processing.
Wherein, this certain wavelengths is the wavelength of 4 kinds of wavelength coverages, described optical filter is 4, be numbered 1～4 respectively, correspondingly, being numbered 4 kinds of wavelength coverages that 1～4 4 tablet filters are seen through is followed successively by: 0.450-0.515 μ m, 0.63-0.69 μ m, 0.775-0.90 μ m, 2.08-2.35 μ m.
The utility model also provides a kind of classified Monitoring system, comprising:
Above-mentioned image collecting device is used to collect the picture signal that is fit to Computer Processing, and is shown as image, shows on computer screen;
Storer is connected with image collecting device, is used for memory image signal and spatial data.
The GPS module is connected with storer, is used to carry out space orientation, measures the spatial data of each exposure station; And
Image processing module is connected with storer, is used for picture signal and spatial data are stored, and the data of storage are carried out Flame Image Process.
Image processing module can comprise pollution situation percent profile figure acquisition module, nutritive salt pollution figure layer acquisition module and chlorophyll concentration distribution plan acquisition module.
The technical solution of the utility model has designed the camera that can obtain high spatial, high-definition picture fast by spectral characteristic and the optical filter that utilizes atural object, and utilize GPS (GlobalPositioning System, GPS) obtains coordinate in real time, carry out image acquisition, storage, processing, analysis, thereby realized the multidate monitoring of body eutrophication; Second, because the data of being gathered are high-definition picture, when enough hour of pixel, can be similar to and think that a kind of object spectrum forms, and the camera site is nearer apart from water body, reduced the influence of atmosphere radiation, scattering, therefore can real more reaction water body characteristics, equipment cost is lower, operation is convenient; Once more, the technical solution of the utility model can replace the lab analysis method or be provided as the auxiliary support of lab analysis method, carry out the reasonable setting of sampled point, reduce the use amount of chemical agent, and this method has overcome the drawback of utilizing the remote sensing satellite data acquisition to exist, has improved the resolution of image.
Description of drawings
Fig. 1 is the structural drawing of the image collecting device of the utility model embodiment;
Fig. 2 is structural drawing and this system use signal on water body of the body eutrophication evaluation system of the utility model embodiment.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
Fig. 1 is the structural drawing of the image collecting device of the utility model embodiment.As shown in Figure 1, a kind of image collecting device, in the present embodiment, it can be a kind of high-resolution camera, it comprises:
LED lamp 1 is evenly distributed on around the optical filter, is used for sending certain wavelengths as light source; The device of the utility model embodiment takes into full account various working environments, as, in the normal operative condition of the situation lower device that overcasts, special design is sent the LED miniature bulb of specific wavelength as light source; This certain wavelengths is 4 kinds of wavelength coverages, is followed successively by: 0.450-0.515 μ m, 0.63-0.69 μ m, 0.775-0.90 μ m, 2.08-2.35 μ m.
Optical filter 2 is embedded on the image collecting device, is used for the light beyond certain wavelengths, to gather optical imagery;
CCD (Charge Coupled Device, charge-coupled image sensor) photoreceptor 3 is installed on the image collecting device, and the optical imagery that is used for being transmitted to CCD photoreceptor surface is converted to electric signal.
Wherein, image collecting device can also comprise analog to digital converter 4, is used for the electric signal from CCD is carried out analog to digital conversion; Digital signal processing chip 5 is used for the picture signal with the suitable Computer Processing of conversion of signals one-tenth after analog to digital converter 4 conversions; And the line collecting plate that carries out Current Control and distribution, usb data transmission line (not shown).
Wherein, optical filter can be 4, be numbered 1～4 respectively, correspondingly, certain wavelengths can be the wavelength of 4 kinds of wavelength coverages, is numbered 4 kinds of wavelength coverages that 1～4 4 tablet filters are seen through and is followed successively by: 0.450-0.515 μ m, 0.63-0.69 μ m, 0.775-0.90 μ m, 2.08-2.35 μ m.
Utilize the image of above-mentioned image collecting device collection to carry out the body eutrophication evaluation, can may further comprise the steps:
S1 utilizes above-mentioned image collecting device shooting at close range water body, and collects the picture signal that is fit to Computer Processing, and is shown as image, shows on computer screen; Carrying out with optical filter in the process of sensitization, after the camera sensitization under the optical filter was finished, next optical filter of quick automatic switching finished until whole collection of the view data of all optical filters, begins to enter next sampled point.
S2 carries out space orientation, measures the spatial data of each exposure station, for example uses the GPS module to carry out;
S3, memory image signal and spatial data, and with the storage data carry out Flame Image Process, for example, can handle by the pattern process module that USB interface is sent in the computing machine.Wherein, behind the memory image signal, image can be proofreaied and correct, merged and inlays, and utilize the sorting algorithm of self study to carry out the no supervised classification of image.
S4 utilizes the stacked addition of figure, and for example GIS (geographical information system, Geographic Information System) schemes the stacked analytical approach that adds, and the special layer that Flame Image Process is obtained superposes.
The utility model also provides a kind of body eutrophication evaluation system, can comprise:
Above-mentioned image collecting device, for example camera 6, are used to collect the picture signal that is fit to Computer Processing, and are shown as image, show on computer screen;
GPS module 7 is used to carry out space orientation, measures the spatial data of each exposure station; And
Image processing module 8 is used for picture signal and spatial data are stored, and the data of storage are carried out Flame Image Process.
Wherein, this system can also comprise storer 9, is used for memory image signal and spatial data.
Image processing module can comprise pollution situation percent profile figure acquisition module, nutritive salt pollution figure layer acquisition module and chlorophyll concentration distribution plan acquisition module.
The step of utilizing pollution situation percent profile figure acquisition module to calculate pollution situation percent profile figure can comprise:
S311 utilizes spatial data, according to the volume coordinate of each pixel in the vertical range computed image of water body;
S312, it is colored synthetic to carry out vacation by the image that 1,3, No. 4 optical filter generates, obtain composograph, from visual angle, a zone selecting composograph is as uncontaminated zone, also be area-of-interest, obtain respectively the mean value X of pixel in the image that generates by 1,3, No. 4 optical filter, the end member of this mean value as uncontaminated zone;
S313 deducts mean value X respectively with each pixel of composograph, and the value that obtains departs from the tolerance in uncontaminated zone as polluted-water;
S314 selects each pixel in the composograph to deduct the maximal value that mean value X obtains respectively, carries out mixed pixel and decomposes, and obtains pollution situation percent profile figure.
Utilize nutritive salt pollution figure layer acquisition module can estimate nutritive salt such as nitrogen, phosphorus and pollute and water bloom pollution figure layer, specifically can comprise:
S321, choose training area, so that carry out choosing end member the false colored synthetic composograph that obtains from image, and the pixel mean value of choosing different training areas perhaps utilizes the edge vertices position of wave band scatter diagram to choose with reference to end member as the reference end member by 1,3, No. 4 optical filter generation;
S322, selection is with reference to the component of end member as end member, add the end member in uncontaminated zone, select 2 end members altogether, and in conjunction with the spectrogram of atural object, select the training pixel of correct pure pixel as end member as far as possible, consider the homogeneity of image atural object and the calculated amount consumption of algorithm simultaneously, setting window size is 3*3 pixel;
S323 carries out mixed pixel and decomposes, and calculates the possibility that each pixel belongs to each end member pollution category, and promptly percentage value obtains the abundance image that pixel belongs to each end member pollution category.
The step of utilizing chlorophyll concentration distribution plan acquisition module to obtain the chlorophyll concentration distribution plan can comprise: at red spectral band one absorption peak is arranged according to chlorophyll a in the water body, increase along with chlorophyll concentration, the ruddiness of outgoing will reduce from water body, and the reflectivity of near-infrared band water body is not influenced by pigment absorption basically, so the ratio R 1/R2 of two waveband reflectivity can reflect the information of chlorophyll concentration.Therefore, utilize the distribution plan of the ratio R 1/R2 drafting chlorophyll concentration of two waveband reflectivity.
This shows, embodiment of the present utility model has designed the camera that can obtain high spatial, high-definition picture fast by spectral characteristic and the optical filter that utilizes atural object, and utilize GPS to obtain coordinate in real time, carry out image acquisition, storage, processing, analysis, thereby realized the multidate monitoring of body eutrophication; Second, because the data of being gathered are high-definition picture, when enough hour of pixel, can be similar to and think that a kind of object spectrum forms, and the camera site is nearer apart from water body, reduced the influence of atmosphere radiation, scattering, therefore can real more reaction water body characteristics, equipment cost is lower, operation is convenient; Once more, the technical solution of the utility model can replace the lab analysis method or be provided as the auxiliary support of lab analysis method, carry out the reasonable setting of sampled point, reduce the use amount of chemical agent, and this method has overcome the drawback of utilizing the remote sensing satellite data acquisition to exist, has improved the resolution of image.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also belongs to protection domain of the present utility model.
Claims (8)
1. body eutrophication image collecting device, it comprises:
Send the LED lamp of the light of specific wavelength, be evenly distributed on around the optical filter;
The optical filter of the light beyond described specific wavelength is embedded on the described image collecting device; And
The CCD photoreceptor is installed on the described image collecting device.
2. body eutrophication image collecting device as claimed in claim 1 is characterized in that described image collecting device also comprises analog to digital converter, is connected with described CCD photoreceptor.
3. image collecting device as claimed in claim 2 is characterized in that described image collecting device also comprises digital signal processing chip, is connected with described analog to digital converter.
4. body eutrophication image collecting device as claimed in claim 1, it is characterized in that, described certain wavelengths is the wavelength of 4 kinds of wavelength coverages, described optical filter is 4, be numbered 1～4 respectively, correspondingly, being numbered 4 kinds of wavelength coverages that 1～4 4 tablet filters are seen through is followed successively by: 0.450-0.515 μ m, 0.63-0.69 μ m, 0.775-0.90 μ m, 2.08-2.35 μ m.
5. classified Monitoring system comprises: the arbitrary described image collecting device of claim 1 to 4, the storer that is connected with described image collecting device, the GPS module that is connected with described storer, and the image processing module that is connected with described storer.
6. classified Monitoring as claimed in claim 5 system is characterized in that described image processing module comprises pollution situation percent profile figure acquisition module.
7. classified Monitoring as claimed in claim 5 system is characterized in that described image processing module comprises nutritive salt pollution figure layer acquisition module.
8. body eutrophication evaluation system as claimed in claim 5 is characterized in that, described image processing module comprises chlorophyll concentration distribution plan acquisition module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920222822 CN201497707U (en) | 2009-09-11 | 2009-09-11 | Water eutrophication image acquisition device and hierarchical monitor system |
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| CN 200920222822 CN201497707U (en) | 2009-09-11 | 2009-09-11 | Water eutrophication image acquisition device and hierarchical monitor system |
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| CN201497707U true CN201497707U (en) | 2010-06-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425853A (en) * | 2012-05-16 | 2013-12-04 | 上海市环境科学研究院 | Standardized value setting and assessing method for lake eutrophication control |
| CN103454275A (en) * | 2012-05-28 | 2013-12-18 | 北京中电科电子装备有限公司 | Machine vision system |
| CN104950713A (en) * | 2015-06-11 | 2015-09-30 | 张迪 | Water quality regulation system based on Beidou |
-
2009
- 2009-09-11 CN CN 200920222822 patent/CN201497707U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103425853A (en) * | 2012-05-16 | 2013-12-04 | 上海市环境科学研究院 | Standardized value setting and assessing method for lake eutrophication control |
| CN103454275A (en) * | 2012-05-28 | 2013-12-18 | 北京中电科电子装备有限公司 | Machine vision system |
| CN104950713A (en) * | 2015-06-11 | 2015-09-30 | 张迪 | Water quality regulation system based on Beidou |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20120911 |