香梨自动称量分级系统  

Automatic Weighing and Grading System for Korla Fragrant Pear

作　　者：李亚硕 祁雁楠 毛文华[1] 赵博[1] 吕程序[1] 任畅 王吉中 LI Yashuo;QI Yannan;MAO Wenhua;ZHAO Bo;LV Chengxu;REN Chang;WANG Jizhong(State Key Laboratory of Soil-Plant-Machine System Technology,Chinese Academy of Agricultural Mechanization Sciences,Beijing 100083,China;College of Information and Electrical Engineering,China Agriculture University,Beijing 100083,China)

机构地区：[1]中国农业机械化科学研究院土壤植物机器系统技术国家重点实验室,北京100083 [2]中国农业大学信息与电气工程学院,北京100083

出　　处：《农业工程》2018年第5期63-68,共6页AGRICULTURAL ENGINEERING

基　　金：国家科技支撑计划(项目编号:2015BAD19B03-01);国家重点研发计划课题(项目编号:2016YFD0400905)

摘　　要：为提高香梨商品价值,将香梨分级是一种常用的做法。该文提出一种基于香梨称量指标的香梨分级设备,利用压敏传感器和AD转换器构成称量模块,由气动摆杆组成执行模块,实现香梨的分级。并且利用圆锥滚子的翻转能力和高速运动能力作为分级线的托盘,满足了高速分级的效果,同时可以为基于图像的香梨外部品质识别做好平台基础。试验验证分级线称量准确度在0.4 g以内,平均误差值在0.4%,精度符合要求。分级执行机构在电机运转>15Hz时,分级准确度接近100%,满足实际生产要求。In order to improve commodity value of Korla fragrant pear,grading of fragrant pear is a common method. A pear grading equipment based on weight index of fragrant pear was presented with a weighing module that made up of pressure sensitive transducer and AD converter,and executive module was made up of pneumatic pendulum bar to realize classification of fragrant pear. By using tapered roller with turnover ability and high-speed motion ability as the pallet of grading line,it met demand of high-speed classification,and also would provide a platform to extract image based on identification of external quality of fragrant pear. Experiment proved that accuracy of weight of grading line was within 0. 4 g,average error rate was 0. 4 %,and precision met commercial process requirement. When motor operation was above 15 Hz, classification accuracy was close to 100%,which met production requirements.

关 键 词：香梨 分级线 圆锥滚子 图像采集平台 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]