水稻种子与斜面碰撞后运动规律的试验  

Experiment on the motion characteristics of rice seeds after collision with different slopes

作　　者：任文涛[1] 董滨[1] 崔红光[1] 韩双[1] 向权力[1] 代丽丽[1] 

机构地区：[1]沈阳农业大学工程学院,沈阳110161

出　　处：《农业工程学报》2009年第7期103-107,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(50775150);沈阳市科学技术计划项目(1032051-1-02)

摘　　要：利用高速摄影仪和高分辨率摄像头分别从竖直和水平两个方向对水稻种子与斜面发生碰撞后的运动轨迹进行了在线跟踪,通过摄像图片的再现,检测与分析了接触面材料、投种高度和斜面倾角对种子碰撞后各运动参数的影响。试验结果表明:随投种高度h增加,种子碰撞后第1次弹跳高度H1线性增大、沿斜面方向的弹跳距离L1也线性增大;随斜面倾角θ的增大,H1线性减小、L1呈指数规律增大;利用二元二次回归正交试验,建立了以投种高度和斜面倾角为自变量,以种子运动平面的侧向偏斜角度为目标函数的种子运动行为预测模型。研究成果为输种管的结构设计提供参考。Trajectory of the rice seed motion after collision with inclined plane was tracked by a HSVC（high speed video camera）and a high-resolution camera separately from vertical and horizontal direction.Through image analysis captured from video,effects of contact materials,seed charge height and inclined plane obliquity on all motion parameters of the collision were detected and analyzed.The results showed that as seed charge height increased,the maximum height of the first bounce H1 and the displacement along the direction of the slope L1 increased linearly.With the increase of inclined plane obliquity,H1 reduced linearly and L1 increased exponentially.Using quadratic orthogonal test with two factors,the seed motion forecast model was established with seed charge height and inclined plane obliquity as independent variables and lateral deviation angle of seed motion plane as objective function.The research results provide reference for structure design of seed drop tube.

关 键 词：水稻种子 输种管 结构设计 碰撞 投种高度 斜面倾角 弹跳高度 

分 类 号：S223.1[农业科学—农业机械化工程]