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Method for detecting mixture concentration field of liquids

A detection method and a technology of liquid mixing, which is applied to the detection of the concentration field of the entire mixing area after different liquids are mixed, and the detection field of liquid mixed concentration field, which can solve the problems of high cost and inflexible mobility, and achieve the effect of low price

Active Publication Date: 2012-08-15
JIANGSU UNIV
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Problems solved by technology

[0004] Although some optical measurement devices (such as PIV, PLIF, etc.) can detect the concentration field of the entire mixing area after the liquid is mixed, these devices have the characteristics of high cost and inflexible mobility

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  • Method for detecting mixture concentration field of liquids
  • Method for detecting mixture concentration field of liquids
  • Method for detecting mixture concentration field of liquids

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] The technical principle diagram of the present invention is as follows figure 1 Shown: colorless Solution as water carrier A, blue I 2 The (starch) solution is used as the carrier agent B of the pesticide, and the pesticide and the aqueous solution with the carrier agent are simultaneously injected into the drug mixer 1 for mixing. The color of the mixed solution will change during the mixing process, specifically as the blue mixed solution gradually becomes colorless as the mixing time progresses.

[0023] figure 2 It shows 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-speed CCD camera 2 or 2' is used to obtain the color change image of the entire mixing area after the pesticide and water are mixed, and the acquired image is proces...

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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 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 [0001] 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. Background technique [0002] 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 pesticide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
Inventor 邱白晶徐溪超杨宁
Owner JIANGSU UNIV
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