农业机械学报2025，Vol.56Issue(11)：184-193,10.DOI:10.6041/j.issn.1000-1298.2025.11.017
面向等离子体苜蓿种子处理的均匀布料系统设计与试验
Design and Experiment of Uniform Distribution System for Plasma Treatment of Alfalfa Seeds
摘要
Abstract
Aiming to address the core requirement for seeds to pass through the electrode zone in a uniform monolayer during dielectric barrier discharge plasma seed treatment,a multi-stage integrated uniform seed distribution system was developed to resolve issues such as clogging,adhesion,and uneven distribution frequently observed in small-sized seeds like alfalfa during transportation.The system achieved initial seed dispersion via a screw metering device and utilized a dispersing vibrator combined with a multi-channel leveling vibratory conveyor to realize efficient multi-stage homogenization and stable monolayer arrangement of seeds.This approach significantly enhanced the uniformity and consistency of seed distribution,effectively overcoming the problem of uneven plasma treatment caused by seed overlap and accumulation in conventional feeding systems.The research integrated theoretical modeling,dynamic analysis,high-speed imaging,and multi-objective parameter optimization to determine critical structural parameters and establish the threshold conditions for avoiding seed throwing movement during vibration conveyance.It systematically revealed the influence mechanism of excitation voltage on individual and collective seed motion behavior.Through single-factor and orthogonal experiments,the significant effects of operational parameters on uniformity indicators were identified.Using Matlab-based image processing,seeds were binarized and boundaries were accurately extracted via watershed segmentation,which ensured reliable calculation of the coefficient of variation of the nearest neighbor distance.Results demonstrated that the dispersing vibrator voltage most significantly affected uniformity,while the conveyor speed was the dominant factor influencing coverage rate(S).The optimal parameter combination was determined as:dispersing vibrator voltage of 120 V,leveling vibrator voltage of 70 V,and conveyor speed of 15 r/min.Validation tests showed that under these parameters,the seed layer uniformity reached 48.12％and coverage rate S achieved 40.93％,representing an effective balance between distribution uniformity and processing efficiency.The research successfully achieved high-efficiency monolayer uniform coating of alfalfa seeds,providing a critical theoretical basis for uniform distribution technology in the seed processing industry.关键词
苜蓿种子/均匀单层布料/振动输送/高速摄像/等离子体处理Key words
alfalfa seeds/uniform single-layer distribution/vibration conveyance/high-speed imaging/plasma treatment分类
农业科技引用本文复制引用
惠云婷,席军辉,王俊武,王守炎,邵国虎,李百成,黄晨,王德成..面向等离子体苜蓿种子处理的均匀布料系统设计与试验[J].农业机械学报,2025,56(11):184-193,10.基金项目
财政部和农业农村部:国家现代农业产业技术体系项目(CARS-34) （CARS-34）
