基于声学特性的裂颖杂交水稻种子检测方法研究  

Detection Method for Hybrid Crack-glume Rice Seeds Based on Acoustic Characteristics Analysis

作　　者：李毅念[1] 魏昌成[1] 丁为民[1] 易应武 

机构地区：[1]南京农业大学江苏省智能农业装备重点实验室,南京210031

出　　处：《农业机械学报》2016年第5期263-269,共7页Transactions of the Chinese Society for Agricultural Machinery

基　　金：高等学校博士学科点专项科研基金项目(20130097110042)

摘　　要：杂交水稻种子在成熟过程中不可避免地会产生稻壳的裂颖,出现裂颖后会影响种子发芽性能和秧苗品质。为识别裂颖水稻种子并将裂颖水稻种子分选出来,利用自行研制的裂颖水稻种子声学检测装置,对不同下落高度、声音传感器与倾斜碰撞玻璃板之间不同距离的正常杂交水稻种子和裂颖杂交水稻种子声学特性进行测试。试验结果表明,正常杂交水稻种子撞击玻璃板后其产生的电压幅值普遍高于裂颖杂交水稻种子,杂交水稻种子最佳下落高度H=150 mm,声音传感器与倾斜碰撞板间的最佳距离h为10 mm或20 mm。对两优108杂交水稻种子的综合识别率达到94%,新两优6380杂交水稻种子的综合识别率达到88%,两优6326杂交水稻种子的综合识别率达到92%。在最优工作条件下正常杂交水稻种子和裂颖杂交水稻种子平均识别率分别达到92%、90.67%。本研究表明能够利用杂交水稻种子碰撞声学特性将裂颖种子与正常种子有效分离出来。Hybrid rice seeds inevitably produced crack-glume of rice husk during the maturation process,so the germination performance of appearing crack-glume seed would be affected. These effects included seed vigor reducing,germination potential and germination rate decreasing and seedling quality lessening.So it is of great significance to distinguish and sort out the crack-glume rice seeds from rice seeds during the producing and processing. In order to detect the crack-glume rice seeds,the acoustic characteristics of the normal and crack-glume hybrid rice seeds,which were fell at different drop heights and different spacing distances from tilt glass to microphone by using self-developed acoustic detection devices,were tested. The experiment results manifested that voice voltage amplitude of normal hybrid rice seeds which impacted with glass plate was generally higher than that of crack-glume hybrid rice seeds. Optimum drop height for hybrid rice seed was 150 mm,optimum spacing distance from tilt glass to microphone was10 mm or 20 mm,under maximum comprehensive identification rate condition. The comprehensive identification rate of Liangyou 108 hybrid rice seeds reached 94%,the comprehensive identification rate of Xin Liangyou 6380 and Liangyou 6326 hybrid rice seeds reached 88% and 92%,respectively. The average identification rate of normal,crack-glume hybrid rice seed were 92% and 90. 67% individually under optimum working condition. The crack-glume rice seed could be separated effectively from normal rice seed by using impacting acoustic characteristics of rice seeds.

关 键 词：杂交水稻种子 裂颖 声学特性 检测 

分 类 号：S122[农业科学—农业基础科学] S339.31