谷物干燥水分在线测量系统设计  

Design of the Grain Moisture Online Measuring System

作　　者：梅庆[1] 金亦富[1] 张瑞宏[1] 缪宏[1] 袁菁芸[1] 赵荔[1] 

机构地区：[1]扬州大学机械工程学院,江苏扬州225127

出　　处：《农机化研究》2015年第9期241-244,共4页Journal of Agricultural Mechanization Research

基　　金：江苏省农机三新工程项目(NJ2013-15)

摘　　要：为了实现谷物干燥过程中水分值的精确控制,建立了一种适用于干燥机的谷物干燥水分在线测量系统。该系统基于电阻法测量原理,采用具有碾碎、挤压、测阻多重作用的螺旋式测阻机构采集信号,通过温度补偿与电路环境温度恒定相结合的方法避免温度对测量精度的影响,并以STC89C52单片机为核心完成数据采集、运算、显示及干燥机工作状态的控制。To realize accuracy control of grain moisture in the drying process , an online measuring system applying to grain moisture measurement of the crop dryer was established .The system based on the principle of resistivity method and collect the signal by the screw type measuring resistivity mechanism .This mechanism has functions of pulverization , ex-trusion and resistivity measurement .A method that combined temperature compensation and constant circuit environment temperature was adopted to avoid the measuring accuracy influenced by temperature variation .The STC89 C52 single-chip microcomputer were used for the realization of the data acquisition , calculation , display and the control of the crop dryer .

关 键 词：谷物干燥 水分在线测量 电阻法 螺旋式测阻机构 

分 类 号：S375[农业科学—农产品加工] S237[农业科学—农艺学]