期刊论文

Design and experimental study on online sowing quantity monitoring device of rapeseed drill seedmeter based on linear array CCD

中文

湖南农业大学学报(自然科学版)

1007-1032

2019

45

3

327-331

10.13331/j.cnki.jhau.2019.03.019

湖南省科学技术厅重点研发计划项目（2017NK2131）；

本校为第一机构

针对油菜条播机窝眼轮式排种器存在多粒种子同时下落难以监测的问题,设计加装了一种基于线阵CCD传感器的播量监测装置.监测装置发射端采用点光源,通过一组凸透镜形成由平行光线覆盖的种子监测区域,接收端采用线阵CCD传感器,通过实时监测像素值的连续变化,监测油菜种子播量,从而实现对播量的精确计量.运用室内试验台架,对窝眼轮式油菜排种器进行了单粒排种、排种计数、播量监测以及漏播和堵塞报警试验.结果表明:投种高度小于150 mm时,监测装置对单粒投种的监测准确率达100％;排种轴转速分别为20、30和40 r/min时,监测装置对1000粒油菜种子计数的准确率分别为98.98％,98.26％和97.32％,对于5、10和...

Aim at problem that it is difficult to monitor sowing quantity for rapeseed drill seed-metering because multiple seeds falling simultaneously,a sowing quantity monitoring device based on linear array CCD sensor was designed.The transmitting terminal of the monitoring device uses a point light source to form a seed monitoring area covered by parallel rays through a set of convex lenses.The receiving end uses a linear array CCD sensor to monitor the rapeseed seed by monitoring the continuous change of pixel values in real time to achieve accurate measurement of the sowing quantity.The indoor tes...