基于现场总线粮食干燥分布式控制系统的研究与设计  

Research and Design of Grain Drying Distributed Controlling System Based on CAN Bus

作　　者：姜重然[1] 陈文平[1] 李丽[1] 白金泉[2] 王宇春[1] 徐建东[1] 

机构地区：[1]佳木斯大学信息电子技术学院,黑龙江佳木斯154007 [2]佳木斯大学理学院,黑龙江佳木斯154007

出　　处：《农机化研究》2014年第5期166-169,共4页Journal of Agricultural Mechanization Research

基　　金：黑龙江省教育厅科学技术研究项目(12531711);佳木斯大学科学技术研究项目(Lyz2012-26)

摘　　要：根据目前粮食干燥控制系统存在的问题,提出了一种基于现场总线粮食干燥分布式控制系统。上位监控计算机采用EPCS-500嵌入式工控机,利用组态软件开发上位机界面,下位机采用带CAN总线的P83C591单片机作为各个智能测控节点,选用电容法对粮食含水率进行检测,利用单总线数字温度传感器芯片DS18B20测量干燥温度。研究设计表明,该分布式粮食干燥控制系统控制准确,控制参数和干燥工艺调整方便,线路少且维修方便,精度高且抗干扰能力强,价格低廉,能满足了粮食干燥实时测控的要求。A grain drying distributed controlling system based on CAN Bus is put forward according to the present dry controlling system .The upper computer adopted the EPCS-500 embedded engineering machine , making full use of con-figuration software to develop the upper computer interface .While for the lower computer , the P83 C591 SCM with CAN Bus is used as nodes of each intelligent controllers , detecting the grain moisture content with the use of the capacitance method and detecting the drying temperature with the use of the DS 18 B20 which is called the single bus digital tempera-ture sensor chip .It has been proved that this distributed grain drying controlling system is accuracy controlled .It can conveniently adjust the control parameters and the drying technology .With the less lines , it can be mended conveniently . It has high accuracy and is strong enough to withstand the interference .With low price it can fulfill the demanding of real-time measurement .

关 键 词：CAN总线 粮食干燥 分布式 控制 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]