Fogdrop collection method utilizing camera shutter principle

Abstract

The invention discloses a fogdrop collection method utilizing a camera shutter principle and solves the problems that indexes such as diameters, uniformity and the like of fogdrops have errors and sampling fails due to the fact that time is difficult to control and fogdrops are overlapped and even are gathered to form large fogdrops in the fogdrop collecting process. The method mainly comprises three stages: the first stage is collection of fogdrops, the second stage is processing of fogdrop images, and the third stage is data analysis. Required equipment comprises a liquid conveying unit, a fogdrop collecting unit and a fogdrop image processing unit; the liquid conveying unit comprises an air compressor, a pressure regulator, a water tank, a pressure meter, a liquid conveying pipe and a spray nozzle; the fogdrop collecting unit comprises water-sensitive paper, an upper sampling board, a lower sampling board, plastic slides and a bottom plate; the fogdrop image processing unit comprises a camera, a computer and the like. The equipment is reasonable in structure and convenient to use, overlapping, gathering and other phenomena of fogdrops are avoided, accurate measurement of the concentration of the fogdrops is realized, accurate spray operation can be guided, and pesticide waste caused in the spray operation is reduced.

Description

technical field [0001] The invention relates to a method for collecting fog droplets using the principle of a camera shutter, in particular to a method for detecting the size of fog droplets, which belongs to the field of agricultural spray research. Background technique [0002] In the pesticide spraying process, the droplet diameter is related to the adsorption and deposition of the droplet. If the droplet diameter is large, it is easy to deposit but the coverage uniformity is poor, and most of the droplets fall into the soil under the action of gravity. If the diameter of the droplets is small, the coverage of the droplets is better, but the droplets that are too small are easily taken away by the wind, causing environmental pollution. In addition, it has different effects according to different droplet diameters. For example, the best droplet size is about 30 μm for sterilization; the best insecticidal effect for pests and diseases is about 80 μm; when used as a nutrien...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the sampling process, because the sampling time is slightly longer, the fog droplets will overlap, resulting in errors in the diameter of the droplets, and even the droplets will converge into large droplets and become invalid sampling points. A sampling method of droplet diameter, which has the advantages of simple operation and low cost, and is of great significance for guiding precise spraying operations, reducing the waste of pesticides caused in the sampling process, and realizing accurate sampling

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