Measurement and analysis of restitution coefficient between maize seed and soil based on high-speed photography

作     者：Wang Jinwu Tang Han Wang Jinfeng Jiang Dongxuan Li Xin 

作者机构：College of EngineeringNortheast Agricultural UniversityHarbin 150030China 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2017年第10卷第3期

页      面：102-114页

核心收录：

学科分类：0710[理学-生物学] 0810[工学-信息与通信工程] 09[农学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0901[农学-作物学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：the National Science and Technology Support Plan Project(2014BAD06B04) 

主　　题：maize seed soil restitution coefficient mirror reflection high-speed photography measurement 

摘      要：The restitution coefficient is an important elementary physical parameter related to the research and development of agricultural *** kinematic model of maize seed in the falling and impacting processes was developed to measure the restitution coefficient between maize seed and soil.A test bench for measuring the restitution coefficient was designed and built referred to the theory of mirror *** velocities for impacting maize seed were measured and analyzed in a three-dimensional space via high-speed photography,and then restitution coefficients of in different impact conditions were *** this basis,this study took flat dent seed and round seed as *** factor tests were conducted to analyze the influences of these factors on the restitution *** impact angle,falling height,soil compaction,soil moisture,maize moisture content and different parts of seed were selected as test *** corresponding regression equations were obtained by *** results showed that,as the impact angle was bigger than 25°,the restitution coefficient increased with the increase of impact *** restitution coefficient had a linear decreasing trend with the increase of falling *** the soil compaction strength was 200-350 kPa,the restitution coefficient increased with the increase of soil *** the soil compaction strength was larger than 350 kPa,the changing trend of the restitution coefficient was relatively *** the soil moisture content was 13.5%-18%,the restitution coefficient decreased with the increase of soil *** the soil moisture content was 18%,the restitution coefficient was the *** the maize moisture content was 11%-16%,the restitution coefficient decreased with the increase of maize moisture *** rotational motion always occurred in falling process of flat dent seed and round *** probabilities of crown part and lateral part of maize seed impacting with soil were the highest