基于计算机视觉的玉米单倍体自动分选系统

Sorting System of Maize Haploid Kernels Based on Computer Vision

研究了一种玉米单倍体籽粒分选方法,可自动分选具有Navajo标记的玉米单倍体籽粒。分选系统主要由种子输送单元、图像采集处理单元、分拣卸料单元及系统控制单元组成。图像采集处理单元根据玉米籽粒胚部及胚乳顶部的颜色特征进行单倍体籽粒判断,并将判断结果发送给系统控制单元。系统控制单元根据该结果协调种子输送单元及分拣卸料单元机械臂的运动,实现籽粒位置定位,同时开启与机械臂末端相应电磁阀,采用气吸方式分离杂合体籽粒,系统分拣速度可达500粒/min。

A sorting system for maize haploid kernels marked with the Navajo label was designed.It consisted of a seed transmission unit,an image acquisition and processing unit,a sorting-unloading unit and a system control unit.The image acquisition and processing unit identified the haploid kernels according to the color features on maize embryo and the top of maize endosperm.Then it sent the identification information results to the system control unit.The system control unit,which controlled the motion of the seeds transmission unit and the mechanical arm of the sorting-unloading unit,opened the solenoid valves which connected to the mechanical arm.The system separated the heterozygote kernels from the haploid kernels using air-suction and achieved a sorting speed of 500 kernels per minute.