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Near-Infrared-Based Measurement Method of Mass Flow Rate in Grain Vibration Feeding System

Author

Listed:
  • Yanan Zhang

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Zhan Zhao

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Xinyu Li

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Zhen Xue

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
    Taizhou Xiechuang Agricultural Equipment Co., Ltd., Taizhou 225312, China)

  • Mingzhi Jin

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

  • Boyu Deng

    (School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)

Abstract

The radial distribution of material feeding onto a screen surface is an important factor affecting vibration screening performance, and it is also the main basis for the optimization of the operating parameters of a vibration screening system. In this paper, based on near-infrared properties, a real-time measurement method for the mass flow rate of grain vibration feeding was proposed. A laser emitter and a silicon photocell were used as the measuring components, and the corresponding signal processing circuit mainly composed of a T-type I/V convertor, a voltage follower, a low-pass filter, and a setting circuit in series was designed. Calibration test results showed that the relationship between grain mass flow rate and output voltage could be described using the Gaussian regression model, and the coefficient of determination was greater than 0.98. According to the working principle of the grain cleaning system of combine harvesters, the dynamic characteristics of grain vibration feeding were analyzed using discrete element method (DEM) simulations, and the monitoring range of the sensor was determined. Finally, grain mass flow rate measurement tests were carried out on a vibration feeding test rig. The results indicated that the grain mass measurement error could be controlled within 5.0% with the average grain mass flow rate in the range of 3.0–5.0 g/mm·s. The proposed measurement method has potential application value in the uniform feeding control systems of vibration feeders.

Suggested Citation

  • Yanan Zhang & Zhan Zhao & Xinyu Li & Zhen Xue & Mingzhi Jin & Boyu Deng, 2024. "Near-Infrared-Based Measurement Method of Mass Flow Rate in Grain Vibration Feeding System," Agriculture, MDPI, vol. 14(9), pages 1-11, August.
  • Handle: RePEc:gam:jagris:v:14:y:2024:i:9:p:1476-:d:1467201
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