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Experimental Study of Capacitance Sensors to Test Seed-flow

机译:电容传感器试验种子流动的实验研究

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摘要

The real-time seed-metering device performance detection is one of key techniques to ensure operation quality of a planter. A crossed E-shape plate capacitance sensor, a parallel-plate capacitance sensor and a differential tri-plate capacitance sensor, are proposed to test corn-seed flow. The detection concept and sensor structure parameters are presented. An adjustable stand is designed to investigate the impact of sensor structure and seed velocity on the outputs of capacitance sensors. The sensitivity and the feasibility of 3 sensors are studied by detecting capacitance variations at different corn-seed speeds. Experimental results show that, with average capacitance variation 0.1245pF and 0.1115 pF, respectively, the crossed E-shape plate sensor and the differential tri-plate sensor are suitable to measure corn-seed metering device performance.
机译:实时种子计量装置性能检测是确保播种机的操作质量的关键技术之一。建议交叉的电子形板电容传感器,平行板电容传感器和差分三板电容传感器来测试玉米种子流。提出了检测概念和传感器结构参数。可调节支架设计用于研究传感器结构和种子速度对电容传感器输出的影响。通过检测不同玉米种子速度的电容变化来研究3个传感器的灵敏度和可行性。实验结果表明,具有平均电容变化0.1245PF和0.1115PF,交叉的电子形状板传感器和差动三板传感器适合测量玉米种子计量装置性能。

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