高低温交变湿热试验箱控制系统设计
毕业论文关键词：高低温交变 PLC 组态王 控制系统 Title High and low temperature alternating humid chamber control system
Abstract High and low temperature alternating humid chamber is also known as Environmental Chambers,it can simulate temperature and humidity environment accurately.It provide reliability testing for products of varieties of industries.Currently,with the continuous development of China’s science and technology,high and low temperature heat chamber has been widely applied.And with a good control of the corresponding system is more particularly important. The topic under the technical requirements of the chamber,design a temperature and humidity control system based on PLC and Kingview software.This control system use PLC instead of the traditional relay-contactor control,and make use of PID control technology.The whole system is simple,high reliability,good practical value. The lower computer of this controlling system use Siemens S7-300 series PLC,configured with CPU module (CPU315-2DP),DI/DO module (SM323),AI module (SM331),power module (PS307/5A) and rail (482mm).Use as a PLC programming software STEP7V5.4,and use Ladder as the programming language. The upper computer of the system use Lenovo IPC,and use Kingview 6.53 software as development platform,produced a total of six interactive interface including a system main interface,parameter setting,the alarm window,PID parameters,history curve and data browsing.The entire control system to achieve real-time monitoring for chamber,parameter setting,historical data view and security management functions.Interactive screen image,intuitive,accurately reflects the chamber’s temperature and humidity control process. The lower computer of this controlling system use communication cards CP5611 connecting with lower machine PLC.
Keywords High and low temperature aiternating PLC Kingview software controlling system
目次
1.绪论1
1.1课题背景及研究意义...1
1.2湿热试验箱的发展..2
1.3课题主要内容2
1.4论文主要安排3
2.PLC控制系统的设计..4
2.1PLC基础...4
2.1.1PLC组成..4
2.1.2PLC工作原理....5
2.1.3PLC分类及特点6
2.2PLC控制系统设计原则和步骤..6
2.2.1PLC控制系统设计基本原则....6
2.2.2PLC控制系统设计一般步骤....6
2.2.3PLC程序设计一般步骤..7