文档介绍：高等教育自学考试本科毕业论文
基于FX1N的液体混料罐控制系统设计
考生姓名: 准考证号:
专业层次: 本科院(系):机械与动力工程院
指导教师: 职称: 讲师
重庆科技学院
二O一0年十二月二十日
高等教育自学考试本科毕业论文
基于FX1N的液体混料罐控制系统设计
考生姓名:
准考证号:
专业层次: 本科
指导教师:
院(系):机械与动力工程院
重庆科技学院
二O一0年十二月二十日
摘要
随着科技的发展,PLC的开发与应用把各国的工业推向自动化、智能化。强大的抗干扰能力使它在工业方面取代了微型计算机,方便的软件编程使他代替了继电器的繁杂连线,灵活、方便,效率高。
本次设计主要是对两种液体混合搅拌机PLC控制系统的设计,在设计中针对控制对象:三只传感器监视容器高、中、低液位,设三电磁阀控制液体A、B输入与混合液体C输出,设搅拌电机M。搅拌机是一种将两种或多种以上材料搅拌混合的系统,对搅拌机的控制,关系到产品的质量,工艺流程是:启动后开阀放出混合液体C,低液位后延时20S 放空后关阀,放入液体A经低液位再注入至中液位,关A,放液体B至高液位,关B,启动搅拌电机M,搅60S后停,开阀放出混合液体C,低液位后延时20S 放空后关阀,又重复上述过程,要求工作过程中按下停止按纽后搅拌器不立即停止工作,对当前混合操作处理完毕后才停止搅拌器。本设计采用日本三菱公司的FX1N系列PLC以液体混料控制系统为中心,从控制系统的硬件系统组成,软件选用到系统的设计过程(包括设计方案、设计流程、设计要求、梯形图设计、外部连接通信等)。
关键词:液体混料装置,自动控制,PLC,电动机,传感
LIQUID MIXING TANK FX1N BASED CONTROL SYSTE DESIGN
ABSTRACT
With the development of technology, PLC development and application of the industrial countries into the automation and anti-interference ability to make it in the industry replaced the puter to facilitate software programming to enable him to replace the relay plex connections, flexible, convenient and efficient.
The system is mainly of two liquids mixing and blending machine PLC control system, for controlling the object in the design: three sensors Jianshirongqi high, medium and low level, She three solenoid control liquid A, B input and the mixed liquid C output, set stirring motor M. Mixer is a two or more above the mixing material system, on the mixer control, related to the quality of the product, process is: A post placed in the liquid to be injected by the low level of liquid level, the relevant .A up to high level of liquid B, Guan B, start stirring motor M, after mixing 60S stop, open mixed liquid release valve C, the low level off after the delay after 20S emptying valve, then repeat the process, the course work the Stop button to stop working immediately after the mixer is not on the current operations have been disposed of to stop mixing blende