CN102087220A - Method for detecting mixture concentration field of liquids - Google Patents
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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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- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000203 mixture Substances 0.000 title claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000003814 drug Substances 0.000 claims abstract description 13
- 229920002472 Starch Polymers 0.000 claims abstract description 12
- 235000019698 starch Nutrition 0.000 claims abstract description 12
- 239000008107 starch Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 13
- 229920000856 Amylose Polymers 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 239000003905 agrochemical Substances 0.000 claims 4
- 238000009472 formulation Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000575 pesticide Substances 0.000 abstract description 18
- 229940079593 drug Drugs 0.000 abstract description 8
- 238000004042 decolorization Methods 0.000 abstract description 3
- 239000012780 transparent material Substances 0.000 abstract description 3
- 238000012512 characterization method Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 5
- 239000011259 mixed solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 102100020760 Ferritin heavy chain Human genes 0.000 description 2
- 101001002987 Homo sapiens Ferritin heavy chain Proteins 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
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Abstract
本发明涉及一种用于液体混合浓度场表征的方法。更具体地说，涉及一种利用脱色反应颜色变化的特点，来表征不同液体混合后整个混合区域浓度场的方法。无色的NaS2O3溶液作为水的携流剂A，蓝色的淀粉I2溶液作为农药的携流剂B，将带有携流剂A的水和带有携流剂B的农药同时注入到混药器中进行混合；随着混合过程的进行，混合液颜色会发生变化；混合器混合区域部分采用透明的材料，高速CCD相机通过透明的混合区域来获取农药和水混合后的图片，对获取的图片经过灰度二值化、水平集和边界跟踪等图像处理等技术处理后表征浓度场信息。本发明简单实用，成本低且机动性好。
The invention relates to a method for characterization of liquid mixed concentration field. More specifically, it relates to a method of characterizing the concentration field of the entire mixing region after mixing different liquids by using the characteristics of the color change of the decolorization reaction. The colorless NaS 2 O 3 solution is used as the water-carrying agent A, and the blue starch I 2 solution is used as the pesticide B-carrying agent, and the water with the carrying agent A and the pesticide with the carrying agent B are simultaneously Inject into the drug mixer for mixing; as the mixing process progresses, the color of the mixed liquid will change; the mixing area of the mixer is made of transparent materials, and the high-speed CCD camera can obtain the picture of the mixed pesticide and water through the transparent mixing area , to characterize the concentration field information after image processing techniques such as grayscale binarization, level set and boundary tracking etc. are processed on the acquired pictures. The invention is simple and practical, has low cost and good maneuverability.
Description
技术领域technical field
本发明涉及一种液体混合浓度场检测方法。更具体地说，涉及一种利用脱色反应颜色变化的特点，来检测不同液体混合后整个混合区域浓度场的方法，属于植保机械领域。The invention relates to a liquid mixed concentration field detection method. More specifically, it relates to a method for detecting the concentration field of the whole mixing area after different liquids are mixed by utilizing the color change characteristic of the decolorization reaction, and belongs to the field of plant protection machinery.
背景技术Background technique
混药是机械化施药的基本单元，其设计除了要考虑混药器水力学性能外（如流速、压力降等），更为重要的品质是混药均匀度。如果药液不能在目标靶区均匀分布，则只能按分布的最小值来确定防治用药量，从而导致在分布的最大值处用药量超标。超标用药不仅降低了农药的有效利用率，而且严重污染环境。因此，有必要对农药和水混合后整个混合区域的浓度场均匀度进行检测，从而优化混药器结构参数达到提高农药有效利用率的目的。Drug mixing is the basic unit of mechanized pesticide application. In addition to considering the hydraulic performance of the drug mixer (such as flow rate, pressure drop, etc.), its design is more important than the uniformity of drug mixing. If the liquid medicine cannot be evenly distributed in the target area, the dosage of the preventive medicine can only be determined according to the minimum value of the distribution, resulting in excessive dosage at the maximum value of the distribution. Excessive use of pesticides not only reduces the effective utilization of pesticides, but also seriously pollutes the environment. Therefore, it is necessary to detect the uniformity of the concentration field in the entire mixing area after the pesticide and water are mixed, so as to optimize the structural parameters of the pesticide mixer to improve the effective utilization of pesticides.
在对不同液体混合后浓度检测的现有技术中，申请者未发现有对不同液体混合后整个混合区域浓度场检测的介绍。在对相近技术现有专利进行检索时发现，申请日期为2008.1.16，申请号为200810019185.5的中国专利《液体浓度检测装置及检测方法》公开了一种利用不同浓度的溶液具有不同折光率的特点检测浓度的方法。但是上述检测方法检测的仅仅是浓度场空间中单点或一小部分区域的浓度信息，而非整个混合区域的浓度信息。类似上述这种检测浓度场区域中单点浓度或一小部分区域浓度的专利还有：申请日期为1994.06.28，申请号为94107246.0的中国专利《用于混合在线探测混合物均匀性的设备及方法》及申请日期为2006.11.8，申请号为200610114378.X的中国专利《一种检测不同物质混合均匀度的方法》等。In the prior art of detecting the concentration of different liquids mixed, the applicant did not find any introduction to the detection of the concentration field of the entire mixing area after the mixing of different liquids. When searching the existing patents of similar technologies, it was found that the Chinese patent "Liquid Concentration Detection Device and Detection Method" with the application date of 2008.1.16 and the application number of 200810019185.5 discloses a method that uses different concentrations of solutions with different refractive indices. Method for detecting concentration. However, the above detection method only detects the concentration information of a single point or a small area in the concentration field space, rather than the concentration information of the entire mixed area. Similar to the above-mentioned patents for detecting the concentration of a single point in the concentration field area or a small part of the area: the application date is 1994.06.28, and the application number is 94107246.0 Chinese patent "Equipment and method for mixing on-line detection of mixture uniformity "and the Chinese patent "A Method for Detecting the Mixing Uniformity of Different Substances" with the application date of 2006.11.8 and the application number of 200610114378.X.
尽管一些光学测量设备（如PIV，PLIF等）可以对液体混合后整个混合区域进行浓度场进行检测，但这些设备存在成本高且机动性不灵活等特点。Although some optical measurement devices (such as PIV, PLIF, etc.) can detect the concentration field of the entire mixing area after liquid mixing, these devices have the characteristics of high cost and inflexible mobility.
发明内容Contents of the invention
本发明的目的是提供一种水和农药混合后整个混合区域浓度场检测方法。The purpose of the present invention is to provide a method for detecting the concentration field of the whole mixing area after water and pesticide are mixed.
为达到上述目的，本发明采取的技术方案是：无色的 
上述淀粉I2溶液为含有过量1%~5%的KI作为溶剂的溶液；Above-mentioned starch I 2 solution is the solution that contains excessive 1%～5% KI as solvent;
上述淀粉I2溶液中淀粉为能充分溶解在农药中的直链淀粉；Starch in above-mentioned starch I 2 solution is the amylose that can fully dissolve in pesticide;
上述淀粉I2溶液制备完成后须在空气中暴露1~3小时后再使用；After the preparation of the above-mentioned starch I 2 solution, it must be exposed in the air for 1 to 3 hours before use;
上述
上述混合器混合区域部分采用透明的材料制作，如钢化玻璃、有机玻璃等；The mixing area of the above-mentioned mixer is made of transparent materials, such as tempered glass, plexiglass, etc.;
上述高速CCD相机与混合器之间的距离为50~200cm；The distance between the above-mentioned high-speed CCD camera and the mixer is 50~200cm;
上述高速CCD相机的数量为1台或多台。The quantity of the above-mentioned high-speed CCD cameras is one or more.
本技术与现有技术相比，优势如下:Compared with the prior art, this technology has the following advantages:
(1) 本技术采用的药剂均是易于获取的化学药剂，价格低廉；(1) The medicaments used in this technology are easy-to-obtain chemical medicaments with low prices;
(2) 本技术利用两种化学药剂之间的脱色反应的颜色变化，然后用这种颜色变化来表示浓度的变化，因而可以表征不同液体反应后整个混合浓度场的信息;(2) This technology uses the color change of the decolorization reaction between two chemical agents, and then uses this color change to represent the change of concentration, so it can characterize the information of the entire mixed concentration field after the reaction of different liquids;
(3) 本技术采用普通的高速CCD相机获取浓度场信息，避免了采用光学测量设备（如PIV，PLIF等）带来的机动不灵活性。(3) This technology uses ordinary high-speed CCD cameras to obtain concentration field information, avoiding the inflexibility brought about by optical measurement equipment (such as PIV, PLIF, etc.).
附图说明Description of drawings
图1为本发明的原理图。Fig. 1 is a schematic diagram of the present invention.
图2为实施本发明的整个系统示意图。Fig. 2 is a schematic diagram of the whole system for implementing the present invention.
其中1为混药器，2和2’为高速CCD相机。Among them, 1 is a drug mixer, and 2 and 2' are high-speed CCD cameras.
具体实施方式Detailed ways
下面结合附图对本发明做进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings.
本发明的技术原理图如图1所示：无色的
图2表示的是将带有携流剂的水和农药溶液分别通过(a)和(b)进口进入混药器1，(c)为混合液出口。高速CCD相机2或2’用来获取农药和水混合后整个混合区域颜色变化图像，获取的图片经灰度二值化、水平集和边界跟踪等图像处理等技术处理后来表征浓度场信息。What Fig. 2 shows is that the water and the pesticide solution with the entrainer enter the drug mixer 1 through (a) and (b) inlets respectively, and (c) is the mixed solution outlet. The high-
Claims (7)
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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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| CN2010106030801A CN102087220B (en) | 2010-12-24 | 2010-12-24 | Method for detecting mixture concentration field of liquids |
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| 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 not_active Expired - Fee Related
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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