江苏科技大学
本 科 毕 业 设 计（论文）
学 院 电子信息学院
专 业 高压电线杆 电气工程及其自动化专业
学生姓名
班级学号
指导教师
二零 年六月
江苏科技大学本科毕业论文
Design of automatic control system of grain dryer
摘 要
我国至今为止，各项事业蓬勃发展，尤其是粮食生产加工的发展一直受到国家党中央的高度重视。粮食生产是国家发展的根基，万民平安和谐发展的源头。而每年由于粮食烘干不及时而造成的粮食腐烂、浪费给国家民生和经济都会造成巨大的损失，所以解决粮食的烘干问题具有很大的意义。 本课题主要是在JX-300X组态软件包的基础上，对粮食烘干机自动控制系统进行组态(包括主机、操作站、数据转发卡、I/O卡件、I/O测试信号点、回路、流程图等的设置)、编译、监控。通过控制粮食在烘干塔内的停留时间与干燥过程中干燥段和冷却段入口风的温度与压力来控制烘干塔出口处的粮食含水量，使其出口处的粮食含水量达到木本植物的样本14±0.5%左右，以满足国家粮食的储存标准。最后，通过现场试验，模拟储存仓的单回路控制，来控制粮仓储量以及粮食下放的流量。同时，通过毕业设计充分了解了JX-300X组态软件的强大，也希望本课题可以作为基于JX-300X组态系统等相关试验的参考依据。 关键词 大型设备包装箱：粮食烘干机；自动控制系统；组态；监测
Abstract
Alpha
Our country so far, the cause of vigorous development, especially the development of food production and processing of the CPC Central Committee has always attached great importance by the state. Food production is the foundation of national development, and the people safe and harmonious development of the source. And every year due to grain drying is not timely rot caused by food waste to the country's livelihood and the economy will result in huge losses, so to solve the problem of food drying of great significance.
The main subject is in the JX-300X configuration package, based on the grain dryer automatic control system configuration (including the host, operating station, data forwarding card, I / O cards, I / O test signal points , loop, flow charts and other settings),
compiling, 干式油底壳monitoring. Food in the drying加工pcb板 tower by controlling the residence time of the drying process of drying and cooling sections with the inlet air 制冰袋pressure to control the temperature at the outlet of the drying tower grain moisture content, grain moisture content at the outlet to reach 14 ± 0.5 percent, in order to meet national food storage standards. Finally, field tests, simulated storage silos single-loop control, to control the granary reserves and food decentralized traffic. Meanwhile, graduation design fully understand JX-300X powerful configuration software also hope this project can serve as JX-300X-based configuration system and other related tests of reference.
Keyword ：Grain dryer ；Automatic control system ；Configuration ；Monitor
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