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Measuring Spray Droplet Size from Agricultural Nozzles Using Laser Diffraction
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Two-dimensional automatic measurement for nozzle flow distribution using improved ultrasonic sensor.

Changyuan Zhai1, Chunjiang Zhao2, Xiu Wang3

  • 1College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling 712100, China. liweizibo@nwsuaf.edu.cn.

Sensors (Basel, Switzerland)
|October 27, 2015
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Summary
This summary is machine-generated.

A new system precisely measures spray nozzle flow distribution. This automated tool accurately assesses pesticide deposition, improving spray application efficiency and accuracy.

Keywords:
nozzle flow distributionspray deposition measurementtwo-dimensional automatic measurementultrasonic sensor

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Area of Science:

  • Agricultural Engineering
  • Precision Agriculture
  • Spray Technology

Background:

  • Spray deposition and distribution are critical for effective pesticide application.
  • Nozzle flow distribution significantly influences spray performance.
  • Accurate measurement of nozzle flow is essential for optimizing spray systems.

Purpose of the Study:

  • To design and develop a two-dimensional automatic measurement system for assessing nozzle flow distribution.
  • To verify the system's performance, accuracy, and reliability in measuring liquid deposition.
  • To evaluate the flow distribution of a commercial spray nozzle using the developed system.

Main Methods:

  • Developed a system comprising a conveying unit, control unit, ultrasonic sensor, and deposition collecting dish.
  • Utilized a sensor sleeve with a PVC tube to limit the ultrasonic sensor's beam angle for precise liquid level measurement.
  • Conducted system performance tests and measured the flow distribution of a commercial spray nozzle.

Main Results:

  • The system demonstrated high accuracy, with relative errors below 7.27% for 2 mL measurements and below 4.52% for 4 mL or greater measurements.
  • The developed system accurately captured the shape and spraying width of the commercial nozzle's flow distribution.
  • Verified the system's capability for precise measurement of nozzle flow distribution.

Conclusions:

  • The developed two-dimensional automatic measurement system is effective for accurately assessing spray nozzle flow distribution.
  • This technology can enhance the optimization of spray application by providing detailed flow distribution data.
  • The system offers a reliable tool for evaluating and improving spray nozzle performance in precision agriculture.