CN110308251A - A kind of algae rate of settling measurement device - Google Patents
A kind of algae rate of settling measurement device Download PDFInfo
- Publication number
- CN110308251A CN110308251A CN201910640460.3A CN201910640460A CN110308251A CN 110308251 A CN110308251 A CN 110308251A CN 201910640460 A CN201910640460 A CN 201910640460A CN 110308251 A CN110308251 A CN 110308251A
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- transparent
- transparent cylinder
- video recorder
- algae
- cabinet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
Abstract
The invention discloses a kind of algae rate of settling measurement devices, comprising: cabinet, the inner sidewall of cabinet circumferential surface are evenly equipped with cold light light source；The upper surface setting of the lower surface, bottom surface of cover board is used for the intracorporal light source of diffusing reflection case；Transparent cylinder is set in cabinet, for placing algae solution to be measured；Agitating device is set in transparent cylinder and is stirred to algae solution to be measured；Video recorder is set in cabinet for shooting the transparent cylinder；Camera support is used to support video recorder, adjusts the height and distance of the relatively described transparent cylinder of the video recorder；Computer controls the agitating device for the reading data and processing to the video recorder.Apparatus of the present invention focus on to consider the feature that the algae rate of settling is extremely low, based on computer vision technique, using macroscopical method continuously monitored for a long time, realize the accurate measurement of the microalgae rate of settling.
Description
Technical field
The invention belongs to environmental areas, and in particular to a kind of algae rate of settling measurement device.
Background technique
With the development of water reservoir management control technology, the monitoring and the regulation more data branch of need of work of Reservoir Water Quality
It holds, including the basic data of various algae.The existing monitoring data for algae remain in algological biology level, algae
Class physicochemical property is made slow progress due to the microcosmic influence factors influence of algae.The rate of settling and reservoir meteorological model condition of algae are comprehensive
Effect, the growth for influencing reservoir algae in reservoir are withered away.The rate of settling of algae known in reservoir is studied, is reservoir water
The important link of matter prediction, algae regulation.Therefore it is badly in need of proposing a kind of effective algae rate of settling measurement device.
Summary of the invention
The present invention provides a kind of algae rate of settling measurement device, realizes the rate of settling measurement of common easily settled algae.
Technical scheme is as follows:
A kind of algae rate of settling measurement device, comprising:
Cabinet, the cabinet include cover board, bottom surface, circumferential surface, and the cover board, bottom surface, circumferential surface enclose the closed case
Body, the inner sidewall of the circumferential surface are evenly equipped with cold light light source；The upper surface setting of the lower surface, bottom surface of the cover board is used for diffusing reflection
The intracorporal light source of case；
Transparent cylinder, the transparent cylinder are set in the cabinet, and the transparent cylinder is for placing algae solution to be measured；
Agitating device, the agitating device are set in the transparent cylinder for being stirred to algae solution to be measured；
Video recorder, transparent cylinder described in the video recorder face are set in the cabinet, and the video recorder is for shooting
The transparent cylinder；
Camera support, the camera support, which is set in the cabinet, is used to support the video recorder, the camera support
Height and distance for adjusting the relatively described transparent cylinder of the video recorder is set；
Computer, in outside the cabinet, the computer is connect with the video recorder for the computer installation, for institute
The reading data and processing of video recorder are stated, the computer is connect with the agitating device, controls the agitating device.
Preferably, the cold light light source is LED backlight lamp plate.
Preferably, the agitating device includes the stirring rotator connected below motor and the motor, the transparent cylinder
Upper surface be removable transparent cover plate, the motor passes through shaft and the stirring rotator after connect with the transparent cover plate
Connection.
Preferably, the stirring rotator is transparent stirring rod, pivot center, machine shaft and the institute of the transparent stirring rod
Transparent cylinder axis is stated to coincide.
Preferably, the transparent stirring rod includes multiple agitating paddles straight down.
Preferably, the transparent stirring rod, transparent cover plate, transparent cylinder use transparent PVC plastics.
Preferably, the transparent cylinder height is 1.5~0.5m.
Preferably, the cover board, bottom surface are white plastic plate, and the lower surface of the cover board, the upper surface of bottom surface are frosted
Face.
Preferably, the optical axis of the video recorder passes through the transparent cylinder center.
Compared with prior art, beneficial effects of the present invention are as follows:
1) apparatus of the present invention are simple, realize the rate of settling measurement of low rate of settling algae；
2) apparatus of the present invention use closed design, can effectively avoid the interference from all kinds of natural causes；
3) apparatus of the present invention realize being uniformly distributed for illumination using uniformly distributed light source and frosting, improve measurement accuracy；
4) apparatus of the present invention are worked together using video recorder and computer, can uninterruptedly be monitored within 24 hours, be realized extremely slow falling
The measurement of reduction of speed rate；
5) apparatus of the present invention reflect the rate of settling of microalgae by the way of macroscopic measurement, and sample size is larger, can have
Effect avoids different stages of growth algae characteristic bring measured deviation；
Certainly, it implements any of the products of the present invention and does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
Fig. 1 is the device side view of one embodiment of the invention；
Fig. 2 is the device front view of one embodiment of the invention；
Fig. 3 is the device top view of one embodiment of the invention；
Fig. 4 is the image of the algae solution fluid column of one embodiment of the invention；
Fig. 5 is the single pixel image after the algae solution fluid column picture compression of one embodiment of the invention；
Fig. 6 is that the algae sedimentation liquid level that the single pixel item of one embodiment of the invention forms changes over time figure；
Fig. 7 is that the algae sedimentation liquid level that the image of one embodiment of the invention extracts liquid level acquisition through binaryzation changes over time
Figure；
Fig. 8 is that the liquid level settling height that the image of one embodiment of the invention extracts liquid level acquisition through binaryzation changes over time
Curve；
Marked in the figure: 1- cover board；2-LED backlight；3- computer；4- motor；5- transparent cover plate；The transparent stirring rod of 6-；
7- transparent cylinder；8- video recorder；9- camera support；The bottom surface 10-；11- circumferential surface.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate this hair
It is bright, rather than limit the scope of protection of the present invention.What those skilled in the art made according to the present invention in practical applications changes
Into and adjustment, still fall within protection scope of the present invention.
In order to better illustrate the present invention, the present invention is described in detail below with attached drawing.
Embodiment
A kind of algae rate of settling measurement device includes: referring to figures 1-3
Cabinet, the cabinet include cover board 1, bottom surface 10, circumferential surface 11, and the cover board 1, bottom surface 10, circumferential surface 11 enclose envelope
The inner sidewall of the cabinet closed, the circumferential surface 11 is evenly equipped with cold light light source；The upper table of the lower surface of the cover board 1, bottom surface 10
Face setting is for the intracorporal light source of case described in diffusing reflection；
Transparent cylinder 7, the transparent cylinder 7 are set in the cabinet, and the transparent cylinder 7 is for placing algae to be measured
Liquid；
Agitating device, the agitating device are set in the transparent cylinder 7 for being stirred to algae solution to be measured；
Video recorder 8, transparent cylinder 7 described in 8 face of video recorder are set in the cabinet, and the video recorder 8 is used for
Shoot the algae solution in the transparent cylinder 7；
Camera support 9, the camera support 9, which is set in the cabinet, is used to support the video recorder 8, the camera branch
Height and distance for adjusting the relatively described transparent cylinder 7 of the video recorder 8 is arranged in frame 9；
Computer 3, the computer 3 are set to outside the cabinet, and the computer 3 is connect with the video recorder 8, are used for
To the reading data and processing of the video recorder 8, the computer 3 is connect with the agitating device, controls the agitating device.
Further, the cold light light source is LED backlight lamp plate 2.The LED backlight lamp plate 2, which encloses, forms the cabinet
Circumferential surface 11, the light-emitting surface of the LED backlight lamp plate 2 provides uniformly distributed white light source needed for measurement towards the box house.
The cover board 1, bottom surface 10 are white plastic plate, and the lower surface of the cover board 1, the upper surface of bottom surface 10 are frosted
Face, can the intracorporal light of uniform diffuse reflection case so that video recorder is imaged as white background, while light source uniformly avoids algae to be measured
Liquid liquid level captures the problem of inaccuracy.Cover board 1 is placed horizontally above the cabinet of uniformly distributed light, can wait unlatching when needed.Bottom
Transparent cylinder 7, camera support 9 are placed on face 10.
Further, the agitating device includes the stirring rotator 6 connected below motor 4 and the motor, described transparent
The upper surface of cylinder 7 be removable transparent cover plate 5, the motor 4 connect with the transparent cover plate 5 after pass through shaft with it is described
Stirring rotator connection.Transparent cover plate 5 is placed in above 7 transparent cylinders, can wait unlatching when needed.
The stirring rotator 6 is transparent stirring rod, the pivot center of the transparent stirring rod 6,4 shaft of motor and described
Bright 7 axis of cylinder coincides.In order to the algae solution formed it is more uniform be stirred, the transparent stirring rod includes multiple perpendicular
Straight downward agitating paddle.
Further, the transparent stirring rod 6, transparent cover plate 5, transparent cylinder 7 use transparent PVC plastics.
The transparent cylinder height is 1.5~0.5m.The setting of height can make full use of the valid pixel of household camera,
And guarantee that measuring device is unlikely to excessive；Certainly, transparent graduation mark can be also set on transparent cylinder, so as at computer
When managing data, the data of liquid level are read.
Video recorder is fixed on camera support 9, and 8 optical axis of video recorder passes through 7 center of transparent cylinder, and passes through camera support 9
Height and distance are adjusted, so that the optical axis of the video recorder is passed through the transparent cylinder center, video recorder 8 can take transparent cylinder
7 overall pictures, image quality is higher, if the optical axis of the video recorder is located at the transparent cylinder edge, will lead to imaging has error.
Apparatus of the present invention focus on to consider the feature that the algae rate of settling is extremely low, based on computer vision technique, use
Macroscopical method continuously monitored for a long time, measures the microalgae rate of settling.
Concrete application example
The measurement of algae sinking speed is carried out using above-mentioned device, steps are as follows:
1, the cabinet 2 of uniformly distributed cold light light source is lighted；
2, the cover board 1 of white frosted is opened.
3, transparent cover plate 5 is opened, at this time takes motor 4, transparent cover plate 5, transparent stirring rod 6 from transparent cylinder 7 together
Out；
4, algae solution to be measured is injected in transparent cylinder 7, algae solution to be measured is Scenedesmus quadricauda, transparent cover plate 5 is covered, at this point, will
Motor 4, transparent cover plate 5, transparent stirring rod 6 are put into together in transparent cylinder 7, the position of adjustment transparent cover plate 5, transparent stirring rod 6
It sets, so that 6 pivot center of transparent stirring rod, 4 shaft of motor and 7 axis of transparent cylinder coincide；
5, video recorder 8 is opened, adjustment camera support 9 makes 8 optical axis of video recorder pass through 7 center of transparent cylinder, and passes through phase
Machine support 9, which adjusts height and distance, video recorder 8, can take 7 overall picture of transparent cylinder；
6, the cover board 1 of white frosted is covered.
7, computer 3 is opened, distribution of color in transparent cylinder 7 in the reading video recorder 8 of computer 3, and motor 4 is controlled, it opens
When the beginning, computer controls motor 4, rotates transparent stirring rod 6, so that frustule raises and is uniformly distributed in water in algae solution to be measured
In, when RGB color numerical value difference is lower than 5bit, calculating between 7 transparent water quality upper, middle and lower each points in the transparent cylinder that video recorder 8 measures
Machine controls motor 4 and shuts down, and transparent stirring rod 6 playbacks, i.e., transparent 6 place face of stirring rod is parallel to video recorder optical axis 8, so that video recording
It is newest that function takes the area that transparent stirring rod occurs in the picture in transparent cylinder；Computer 3 after stopping operating, according to
Situation is settled, when and liquid level smaller in water disturbance nearly starts sedimentation, after being generally not less than 1min, start recording transparent cylinder
Color change in 7；Algae sedimentation will appear algae color and clear water interface, and the height for reading clear water water column is increased speed, real
The measurement of existing algae sinking speed；
8, when clear water water-column is higher than 4/5 7 height of transparent cylinder in transparent cylinder 7, stop measurement；Computer is defeated
Clear water water column is instantly increased speed and averagely increases speed in entire time of measuring out.Water-column is if it is past again 4/5
Under, possibly into the Compression Settlement stage, and the free settling of undernatured state, the data obtained will affect the survey of natural subsidence rate
Amount.
Computer digital animation is briefly described as follows:
Referring to fig. 4, algae solution fluid column is in Dark grey in photo, for video recorder 30 photos per second, takes 30 photos
Original gradation mean data；
According to above-mentioned gray average data, by the picture compression in the corresponding period at single pixel item, gained single pixel item
Referring to Fig. 5；
Resulting single pixel item is arranged side by side in chronological order, composition algae sedimentation liquid level changes over time figure, such as schemes
6, wherein each column pixel is average liquid level height in the corresponding period；
Fig. 6 binaryzation can also be extracted liquid level, obtain algae sedimentation liquid level and change over time figure, as described in Figure 7, can also locate
Reason obtains liquid level settling height and changes over time curve, as described in Figure 8；
Cell relative velocity is calculated by the size of each pixel:
Each pixel corresponds to actual size different numerical value in different sized devices, needs value according to the actual situation；
It is 0.2mm that each pixel point height, which corresponds to actual height, in this example, and under no flow velocity disturbed conditions, the sinking speed of cell is
0.018mm/s。
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (9)
1. a kind of algae rate of settling measurement device characterized by comprising
Cabinet, the cabinet include cover board, bottom surface, circumferential surface, and the cover board, bottom surface, circumferential surface enclose the closed cabinet, institute
The inner sidewall for stating circumferential surface is evenly equipped with cold light light source；The upper surface setting of the lower surface, bottom surface of the cover board is for described in diffusing reflection
The intracorporal light source of case；
Transparent cylinder, the transparent cylinder are set in the cabinet, and the transparent cylinder is for placing algae solution to be measured；
Agitating device, the agitating device are set in the transparent cylinder for being stirred to algae solution to be measured；
Video recorder, transparent cylinder described in the video recorder face are set in the cabinet, and the video recorder is described for shooting
Transparent cylinder；
Camera support, the camera support, which is set in the cabinet, is used to support the video recorder, the camera support setting
For adjusting the height and distance of the relatively described transparent cylinder of the video recorder；
Computer, in outside the cabinet, the computer is connect with the video recorder for the computer installation, for the record
The reading data and processing of camera, the computer are connect with the agitating device, control the agitating device.
2. algae rate of settling measurement device according to claim 1, which is characterized in that the cold light light source is LED back
Light lamp plate.
3. algae rate of settling measurement device according to claim 1, which is characterized in that the agitating device includes motor
And the stirring rotator connected below the motor, the upper surface of the transparent cylinder are removable transparent cover plate, the motor
It is connect by shaft with the stirring rotator after being connect with the transparent cover plate.
4. algae rate of settling measurement device according to claim 3, which is characterized in that the stirring rotator is transparent stirs
Stick is mixed, pivot center, the machine shaft of the transparent stirring rod coincide with the transparent cylinder axis.
5. algae rate of settling measurement device according to claim 4, which is characterized in that the transparent stirring rod includes more
A agitating paddle straight down.
6. algae rate of settling measurement device according to claim 4, which is characterized in that the transparent stirring rod, transparent
Cover board, transparent cylinder use transparent PVC plastics.
7. algae rate of settling measurement device according to claim 1, which is characterized in that the transparent cylinder height is
1.5~0.5m.
8. algae rate of settling measurement device according to claim 1, which is characterized in that the cover board, bottom surface are white
Plastic plate, the lower surface of the cover board, the upper surface of bottom surface are frosting.
9. algae rate of settling measurement device according to claim 1, which is characterized in that the optical axis of the video recorder passes through
The transparent cylinder center.
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| CN201910640460.3A CN110308251A (en) | 2019-07-16 | 2019-07-16 | A kind of algae rate of settling measurement device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910640460.3A CN110308251A (en) | 2019-07-16 | 2019-07-16 | A kind of algae rate of settling measurement device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111289701A (en) * | 2020-04-01 | 2020-06-16 | 中国水产科学研究院黄海水产研究所 | Method for detecting vertical movement capacity of phytoplankton |
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| CN210572209U (en) * | 2019-07-16 | 2020-05-19 | 唐山市曹妃甸供水有限责任公司 | Alga settlement rate measuring device |
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| CN105264358A (en) * | 2013-02-18 | 2016-01-20 | 赛拉诺斯股份有限公司 | Image analysis and measurement of biological samples |
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| CN111289701A (en) * | 2020-04-01 | 2020-06-16 | 中国水产科学研究院黄海水产研究所 | Method for detecting vertical movement capacity of phytoplankton |
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