On-line measuring method for mixing concentration field by using planar laser induced fluorescence

A technology of planar laser induction and measurement method, which is applied in the field of agricultural plant protection

Inactive Publication Date: 2013-04-24
JIANGSU UNIV
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  • Abstract
  • Description
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Problems solved by technology

At present, there is still a lack of effective online meas

Method used

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  • On-line measuring method for mixing concentration field by using planar laser induced fluorescence
  • On-line measuring method for mixing concentration field by using planar laser induced fluorescence

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Experimental program
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Embodiment Construction

[0019] The specific embodiment of the present invention will be described with reference to the accompanying drawings.

[0020] The specific steps are:

[0021] (1) The solid-state laser 1 excites 532nm laser light, and forms a sheet-like laser light with a thickness of 0.5mm through the sheet-light shaping part 2 .

[0022] (2) The drug mixer 3 is made of transparent glass. The drug mixer has a pesticide injection port, a water injection port and a mixed solution outlet. The axis irradiates into the mixing chamber.

[0023] (3) Add the fluorescent tracer rhodamine 6G to the pesticide in a fixed proportion to form a stock solution.

[0024] (4) According to the fluorescence range of the fluorescent tracer, take part of the stock solution prepared in step (3), and dilute the stock solution to 2, 5, 10, 20, 50, 100, 200, 500, and 1000 times respectively, and then dilute Each diluted mixed solution is added into the drug mixer, so that the drug mixer is filled with the diluted...

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Abstract

The invention belongs to the technical field of agricultural plant protection, and specifically relates to an on-line measuring method for a mixing concentration field of a plant protection machine. The method employs a laser to irradiate a laser light, forms a sheet planar laser through a sheet light forming member, excites a mixing solution with a fluorescent tracer agent, and employs a CCD camera to obtain fluorescent images. A pesticide and the fluorescent tracer agent are mixed in to an original solution according to a fixed proportion. A uniform mixed solution is calibrated by diluting the original solution by different times. A mapping relationship between the mixing concentration and fluorescent grayscale values is established by combining curves. In real measurement, fluorescent grayscale images of acquiring dynamic mixing liquid are acquired in time and the concentration field of a mixing liquid is inverted through the image grayscale distribution. The method can on-line measure the mixing concentration field in a transparent mixing pipe in real time, and provide basic data for an automatic mixing technology and flow field analytical investigation. The method solves the defects that a conventional mixing concentration measurement method can only measure an average concentration but cannot measure the concentration field.

Description

technical field [0001] The invention belongs to the technical field of agricultural plant protection, and in particular relates to an online measurement method for the concentration field of a plane laser-induced fluorescent mixed drug. Background technique [0002] Precise spraying method According to the pests, weeds and crop growth conditions, the pesticides are applied on demand to save pesticides and reduce environmental pollution. Using automatic pesticide mixing technology, according to different spraying requirements, the required concentration of pesticides can be obtained in real time, and the precise spraying of pesticides on demand can be realized. In the automatic drug mixing process, the real-time online measurement of the mixed drug concentration field is an important index for evaluating the effect of drug mixing and realizing the on-demand configuration of drug mixing concentration. At present, some known methods for measuring the concentration of mixed dru...

Claims

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Application Information

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IPC IPC(8): G01N21/64
Inventor 管贤平邱白晶
Owner JIANGSU UNIV
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