农业工程学报2012，Vol.28Issue(13)：16-21,6.DOI:10.3969/j.issn.1002-6819.2012.13.003
基于电容信号的玉米播种机排种性能监测系统
Seed monitoring system for corn planter based on capacitance signal
摘要
Abstract
To improve the reliablity of the seeding performance of corn planter, a monitoring system was developed based on capacitive sensor. In order to obtain constrained conditions of the electrode plate length, corn seed movement discipline and mechanism in the dropping process were analyzed theoretically. The detection circuits mainly consisted of microcomputer PIC18F2580, capacitive convert chip MS3110 and AD7685. The capacitive pluse peaks interval and curve integral were calculated, the information of seeding performance were obtained such as seeding quantity, missing rate and multiples rate. The experiment results showed that the system accuracy for single seed detection was up to 97.3%, and when the simulation velocity of the planter was 4.0 km/h, the system had an accuracy of 94.6% in seeding quantity, 93.5% in missing detection and 88.1% in multiples rate. This system can effectively monitor seeding performance and help to improve sowing quality.关键词
玉米/播种/传感器/电容/性能监测Key words
corn/ seed/ sensors/ capacitive/ performance monitor分类
农业科技引用本文复制引用
周利明,王书茂,张小超,苑严伟,张俊宁..基于电容信号的玉米播种机排种性能监测系统[J].农业工程学报,2012,28(13):16-21,6.基金项目
十二五科技支撑计划项目(2011BAD20B06)和国家"863"高技术研究发展计划资助项目(2012AA101302) （2011BAD20B06）
