马铃薯精密播种机智能控制系统设计  

Design of intelligent control system of potato precision planter

作　　者：孙传祝[1,2] 王法明 李学强[2,3] 苏国粱 王相友 魏忠彩 孙景彬 Sun Chuanzhu Wang Faming Li Xueqiang Su Guoliang Wang Xiangyou Wei Zhongcai Sun Jingbin(School of Mechanical Engineering, Shandong University of Technology, Zibo 255091, China Shandong Provincial Intelligent Engineering and Technology Research Center for Potato Production Equipment, Dezhou 253600, China Shandong Xicheng Agricultural Machinery Science and Technology Co., Ltd., Dezhou 253600, China School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255091, China College of Engineering, China Agricultural University, Beijing 100083, China)

机构地区：[1]山东理工大学机械工程学院,淄博255091 [2]山东省马铃薯生产装备智能化工程技术研究中心,德州253600 [3]山东希成农业机械科技有限公司,德州253600 [4]山东理工大学农业工程与食品科学学院,淄博255091 [5]中国农业大学工学院,北京100083

出　　处：《农业工程学报》2017年第18期36-44,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：山东省财政农业科技发展专项资金项目(鲁财农指[2015]28号)

摘　　要：针对现有马铃薯播种机播种株距控制精准度不高、易产生重种漏种等问题,研发了一种由主控制模块、检测模块、株距控制模块和振动强度控制模块等7个模块组成的马铃薯精密播种机智能控制系统,采用液压马达控制薯种输送带运转,步进电机控制薯种输送带的振动强度,实现了播种株距和重种漏种率的自动控制。试验结果表明,播种速度相同时,实际播种株距相对于设定播种株距的平均偏差依次增大,播种速度越高实际播种株距的稳定性越差;薯种输送带振动强度越强,重种率越低,漏种率越高,各因素对重种漏种率影响的主次顺序为:薯种输送带振动强度>播种速度>薯种质量,且薯种输送带振动强度对重种率、薯种输送带振动强度和播种速度对漏种率有显著影响;较佳的播种作业参数为:薯种输送带振动强度为Ⅱ级(即轻微振动时)、播种速度为1.16 m/s及薯种质量为35 g。经2~3个周期即可调整到允许范围内,且稳定性好。因此,完全能够满足种植户的实际播种作业要求,为智能控制马铃薯精密播种装备的后续研发提供参考。To solve the problems of low control precision of planting spacing and easily double planting and missing planting an intelligent control system of potato precision planter was developed in this study, which was constituted of a main control module, a detection module, a planting spacing control module, and a vibration intensity control module. A hydraulic motor was used to control the working of seed belt, a stepper motor was used to control the vibration intensity of the seed belt in order to achieve the auto-control of the planting spacing and the double or missing planting. The planting parameter could be set by touch screen according to the different potato varieties, area of planting and soil condition, and the information of planting spacing. As such, double planting and missing could be monitored. To test the machine, experiments were done. The test result showed that when the designed speed was 12-42 r/min, the deviation of actual speed and designed speed would be 56.3%, but it would be 9.20% after one detection cycle and average deviation was 6.09%. When the different planting spaces were planted by using same planting speed, the actual planting spacing could be controlled within the allowable range, and the average deviation between the actual planting spacing by using each planting speed and the setting planting spacing was 2.65%, 3.37%, 3.67%, 5.75% and 4.09%, respectively. When the planting speed was increased from1.16 to 1.91 m/s, the variance of the each planting spacing in 150-300 mm increased by 1.75, 3.12, 4.18, 1.50, 3.28 and 7.06 times, respectively and the higher the planting speed, the lower the stability was. As such, lower planting speed should be selected. The vibration intensity of seed belt was stronger, the replanting rate was lower and the missing seed rate was higher; When a strong vibration was reached, and vibration intensity of seed belt was in violent vibration shape, the planting speed was 1.74 m/s and seed quality was 50 g, the replanting rate was the least. When the vibration

关 键 词：农作物 设计 振动 精密播种 智能控制 播种株距 重种率 漏种率 

分 类 号：S223.2[农业科学—农业机械化工程]