摘要多功能生物培养箱通过改变光照、温度、湿度等条件满足植物、微生物、病毒等的生长需求，本文从硬件及软件两个方面设计了培养箱监控系统。通过温度、湿度、光照强度等传感器，利用S7-200可编程逻辑控制器(PLC)实现对相关参数进行采样、数据处理、与系统设定极限值进行比较，通过逻辑控制实现自动监控。实现网络化通信，便于研究人员远程掌握箱内控制参数变化及工作状况。选用经济、合适的元器件，构建了适用的原理性监控电路。编制培养箱监控系统中PLC的控制程序，并进行调试，实现了满足要求的系统功能。9986
关键词 生物培养箱 传感器 S7-200PLC 环境参数 通信监控
毕业设计说明书（论文）外文摘要
Title Design of multi-functional bio-incubator monitor-control system based on PLC
Abstract
Multifunctional biological incubator can meet the needs of plants growing by changing the conditions that have Influence on biotechnology, microbiology, genetic,or viruse. Based on the functional requirements of the monitor-control system, two aspects -- the hardware and software system solutions are analyzed and designed. S7-200 PLC can achieve samples of relevant environmental parameters by temperature, humidity and light intensity sensors, deal with the data ,compare the parameters with limited data set by system ,also can auto-monitor- control the system by the logical control function, and also the system has good functional scalability 。Networked communication monitor—Control System facilitates researchers in remote areas to grasp the controled parameter changes and video conditions inside.
Selecting the economic and appropriate components to construct the elemental circuit. Programming the controling procedures of the PLC adopted in the multi-functional bio-incubator monitor-control system, debugging, and meeting the requirements of the system.
Keywords bio-incubator sensors
S7-200 PLC environmental parameters
Networked monitor—Control System
目录
目录 1
1． 概述 3
1.1 设计背景 3
1.2 生物培养箱监控系统的研究与现状 3
2. 多功能生物培养箱监控系统方案设计 5
2.1 被控对象分析与描述 5
2.1.1监控系统概述 5
2.1.2 监控系统分析 6
2.2 总体方案设计 7
2.3 主要器件选择 8
2.2.1 温度传感器的选型 8
2.2.2 温度变送器的选型及应用设计 8
2.3.3 湿度、光照强度传感器及变送器选型设计 10
2.3.4 PLC的选型 13
2.3.5 S7--200扩展模块选型 14
2.3.6 通信网络的选择 16
3． 多功能生物培养箱监控系统硬件集成与软件设计 16
3.1 监控系统硬件接线 16
3．2 控制软件设计及编程 19
3.2.1 控制软件设计 19
3.2.2 温度控制子程序 21
3.2.3 湿度控制子程序 25
3.2.4 光照强度控制子程序 25
3.2.5 监控系统主程序 29
3.3 监控软件设计 29
3.4监控系统调试 31
3.4.1 系统的实验室调试 31
3.4.2 现场调试 32
3.4.3 调试结果 32
4 .机械结构设计 33 PLC多功能生物培养箱监控系统设计:http://www.751com.cn/zidonghua/lunwen_8879.html