CN102087220A - Method for detecting mixture concentration field of liquids - Google Patents
Method for detecting mixture concentration field of liquids Download PDFInfo
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- CN102087220A CN102087220A CN 201010603080 CN201010603080A CN102087220A CN 102087220 A CN102087220 A CN 102087220A CN 201010603080 CN201010603080 CN 201010603080 CN 201010603080 A CN201010603080 A CN 201010603080A CN 102087220 A CN102087220 A CN 102087220A
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Abstract
The invention relates to a method for characterizing the mixture concentration field of liquids, in particular to a method for characterizing the concentration field of the entire mixture region by using the characteristics of decoloration color changes after different liquids are mixed. A colorless NaS2O3 solution is used as a flow-entraining agent A of water, a blue starch I2 solution is used as a flow-entraining agent B of pesticide, the water with the flow-entraining agent A and the pesticide with the flow-entraining agent B are simultaneously injected into a mixer for mixing, and along with the mixing process, the color of mixed liquids can change. A part of the mixed region of the mixer adopts a translucent material, through the translucent mixed region, a high-speed CCD (Charge-Coupled Device) camera captures pictures after the water is mixed with the pesticide, and concentration field information is characterized after processing the captured pictures with image processing technologies, such as grey scale binary, level set, boundary tracking and the like. The invention has the advantages of simplicity, practicality, low cost and good maneuverability.
Description
Technical field
The present invention relates to a kind of liquid mixing concentration field detection method.More particularly, relate to a kind of characteristics of utilizing the decoloring reaction change color, detect the method that different liquids mixes whole Mixed Zone, back concentration field, belong to the equipment for plant protection field.
Background technology
Mixed medicine is the elementary cell of mechanization dispenser, and it designs except will considering the medicine mixer hydraulic performance (as flow velocity, pressure degradation), and even more important quality is to mix the medicine uniformity coefficient.If soup can not evenly distribute in the target target area, then can only determine to prevent and treat dosage, thereby cause exceeding standard in the maximal value place dosage that distributes by the minimum value that distributes.The medication that exceeds standard has not only reduced the effective rate of utilization of agricultural chemicals, and serious environment pollution.Therefore, be necessary the concentration field uniformity coefficient of the whole Mixed Zone of agricultural chemicals and water mixing back is detected, reach the purpose that improves pesticide efficacy thereby optimize the medicine mixer structural parameters.
Different liquids is being mixed in the prior art of back concentration detection, the applicant finds no different liquids is mixed the introduction that whole Mixed Zone, back concentration field detects.When being retrieved, the existing patent of close technology finds, date of application is 2008.1.16, and application number is that 200810019185.5 Chinese patent " liquid concentration detection device and detection method " discloses the method that a kind of solution that utilizes variable concentrations has the feature detection concentration of different indexs of refraction.But above-mentioned detection method detects only is the concentration information in single-point or sub-fraction zone in the concentration field space, but not the concentration information of whole Mixed Zone.The patent of single-point concentration or sub-fraction regional concentration also has in the territory, similar above-mentioned this detectable concentration place: the date of application is 1994.06.28, application number is that 94107246.0 Chinese patent " being used to mix the Apparatus and method for of online detection uniformity of mixture " and date of application are 2006.11.8, and application number is the Chinese patent " a kind of method that detects the different material mixture homogeneity " of 200610114378.X etc.
Detect although some optical measuring apparatus (as PIV, PLIF etc.) can carry out concentration field to whole Mixed Zone after the liquid mixing, there are characteristics such as cost height and maneuverability is dumb in these equipment.
Summary of the invention
The purpose of this invention is to provide a kind of water and agricultural chemicals and mix whole Mixed Zone, back concentration field detection method.
For achieving the above object, the technical scheme that the present invention takes is: colourless
Solution flows agent A, blue starch I as taking of water
2Solution is taken stream agent B as agricultural chemicals, will have the agricultural chemicals of taking the stream agent and aqueous solution then and be injected in the medicine mixer simultaneously and mix.Along with the carrying out of mixed process, the mixed liquor color can change.Be embodied in: along with the carrying out of incorporation time, blue mixed liquor becomes colourless gradually.Mixer Mixed Zone part adopts material transparent, high-speed CCD camera obtains agricultural chemicals and the mixed picture of water by transparent Mixed Zone, to characterizing concentration field information after the technical finesses such as Flame Image Process such as picture process gray scale binaryzation, level set and border tracking of obtaining;
Above-mentioned starch I
2Solution is for containing excessive 1% ~ 5% the KI solution as solvent;
Above-mentioned starch I
2Starch is for fully being dissolved in the amylose in the agricultural chemicals in the solution;
Above-mentioned starch I
2Re-use after must in air, exposing 1 ~ 3 hour after formulations prepared from solutions is finished;
Above-mentioned
Solution's solute is
Above-mentioned mixer Mixed Zone part adopts material transparent to make, as tempered glass, organic glass etc.;
Distance between above-mentioned high-speed CCD camera and the mixer is 50 ~ 200cm;
The quantity of above-mentioned high-speed CCD camera is 1 or many.
Present technique compared with prior art, advantage is as follows:
(1) medicament of present technique employing all is the chemical agent that is easy to obtain, and is cheap;
(2) present technique is utilized the change color of two kinds of decoloring reactions between the chemical agent, comes the variation of indicated concentration then with this change color, thereby can characterize the information of whole melting concn field, different liquids reaction back;
(3) present technique adopts common high-speed CCD camera to obtain concentration field information, the motor-driven ineffective activity of having avoided employing optical measuring apparatus (as PIV, PLIF etc.) to bring.
Description of drawings
Fig. 1 is a schematic diagram of the present invention.
Fig. 2 is for implementing total system synoptic diagram of the present invention.
Wherein 1 is medicine mixer, and 2 and 2 ' is high-speed CCD camera.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Technical schematic diagram of the present invention is as shown in Figure 1: colourless
Solution flows agent A, blue I as taking of water
2(starch) solution is taken stream agent B as agricultural chemicals, will have the agricultural chemicals of taking the stream agent and aqueous solution and be injected into simultaneously in the medicine mixer 1 respectively and mix.The mixed liquor color can change in mixed process, is embodied in the carrying out along with incorporation time, and blue mixed liquor becomes colourless gradually.
Fig. 2 represents be will have the water of taking the stream agent and pesticidal solutions respectively by (a) and (b) import enter medicine mixer 1, (c) be mixture export.High-speed CCD camera 2 or 2 ' is used for obtaining agricultural chemicals and water mixes whole Mixed Zone, back change color image, and the picture that obtains characterized concentration field information afterwards through technical finesses such as Flame Image Process such as gray scale binaryzation, level set and border tracking.
Claims (7)
1. a liquid mixing concentration field detection method is characterized in that, and is colourless
Solution flows agent A, blue starch I as taking of water
2Solution is taken stream agent B as agricultural chemicals, will have the water of taking stream agent A and have the agricultural chemicals of taking stream agent B to be injected in the medicine mixer simultaneously and to mix; Along with the carrying out of mixed process, the mixed liquor color can change; Mixer Mixed Zone part adopts material transparent, high-speed CCD camera obtains agricultural chemicals and the mixed picture of water by transparent Mixed Zone, to characterizing concentration field information after the technical finesses such as Flame Image Process such as picture process gray scale binaryzation, level set and border tracking of obtaining.
2. liquid mixing concentration field detection method according to claim 1 is characterized in that, described starch I
2Contain excessive 1% ~ 5% KI solution in the solution as solvent.
3. liquid mixing concentration field detection method according to claim 1 and 2 is characterized in that, described starch I
2The starch I of solution
2For fully being dissolved in the amylose in the agricultural chemicals.
4. liquid mixing concentration field detection method according to claim 3 is characterized in that, described starch I
2Must expose 1 ~ 3 hour after formulations prepared from solutions is finished in air re-uses.
5. liquid mixing concentration field detection method according to claim 1 is characterized in that, and is described
Solution's solute is
6. liquid mixing concentration field detection method according to claim 1 is characterized in that the distance between described high-speed CCD camera and the mixer is 50 ~ 200cm.
7. liquid mixing concentration field detection method according to claim 1 is characterized in that the quantity of described high-speed CCD camera is more than 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106030801A CN102087220B (en) | 2010-12-24 | 2010-12-24 | Method for detecting mixture concentration field of liquids |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010106030801A CN102087220B (en) | 2010-12-24 | 2010-12-24 | Method for detecting mixture concentration field of liquids |
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| CN102087220A true CN102087220A (en) | 2011-06-08 |
| CN102087220B CN102087220B (en) | 2012-08-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630502A (en) * | 2013-12-09 | 2014-03-12 | 江苏大学 | Device and method for representing on-line medicine mixing uniformity of medicine mixer based on decolorizing reaction |
| CN104316291A (en) * | 2014-10-08 | 2015-01-28 | 华南理工大学 | PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device and measuring method |
Citations (5)
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| CN2124757U (en) * | 1992-05-12 | 1992-12-16 | 湖南省农业机械研究所 | Automatic dilution apparatus for primary liquid |
| EP0657222A1 (en) * | 1993-11-11 | 1995-06-14 | Jordt-Steffen Graef | Injector nozzle |
| JP2001343328A (en) * | 2000-05-31 | 2001-12-14 | Communication Research Laboratory | DISPLAY METHOD FOR CHANGE IN pH DISTRIBUTION |
| KR20050107011A (en) * | 2004-05-07 | 2005-11-11 | 부산대학교 산학협력단 | Device and method for simultaneously measuring concentration field and velocity field of microfluidics |
| CN101822957A (en) * | 2010-04-07 | 2010-09-08 | 昆明理工大学 | Method for judging multiphase mixing uniformity based on statistics and ergodic theory |
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2010
- 2010-12-24 CN CN2010106030801A patent/CN102087220B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2124757U (en) * | 1992-05-12 | 1992-12-16 | 湖南省农业机械研究所 | Automatic dilution apparatus for primary liquid |
| EP0657222A1 (en) * | 1993-11-11 | 1995-06-14 | Jordt-Steffen Graef | Injector nozzle |
| JP2001343328A (en) * | 2000-05-31 | 2001-12-14 | Communication Research Laboratory | DISPLAY METHOD FOR CHANGE IN pH DISTRIBUTION |
| KR20050107011A (en) * | 2004-05-07 | 2005-11-11 | 부산대학교 산학협력단 | Device and method for simultaneously measuring concentration field and velocity field of microfluidics |
| CN101822957A (en) * | 2010-04-07 | 2010-09-08 | 昆明理工大学 | Method for judging multiphase mixing uniformity based on statistics and ergodic theory |
Non-Patent Citations (3)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库 信息科技辑》 20080915 郭敬坤 农药药水在线混合效果的数字图像处理技术研究 I138-752 1-7 , 第9期 2 * |
| 《农业机械学报》 20090131 郭敬坤等 混药器流体图像采集与分割方法 83-86，90 1-7 第40卷, 第1期 2 * |
| 《化工学报》 20000229 阮晓东等 用流动可视化技术研究混合器内流场及混合效果 137-140 1-7 第51卷, 第1期 2 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630502A (en) * | 2013-12-09 | 2014-03-12 | 江苏大学 | Device and method for representing on-line medicine mixing uniformity of medicine mixer based on decolorizing reaction |
| CN104316291A (en) * | 2014-10-08 | 2015-01-28 | 华南理工大学 | PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device and measuring method |
| CN104316291B (en) * | 2014-10-08 | 2017-04-05 | 华南理工大学 | Flow field and apparatus for measuring concentration and measuring method based on the mixing liquid of PIV |
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| CN102087220B (en) | 2012-08-15 |
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