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1、大连大学DALIAN UNIVERSITY20XX 届毕业论文（设计）题目名称：基于智能仪表的恒温孵蛋器控制系统设计所 在 学 院 ：专业（班级）：学生姓名：指导教师：评 阅 人 ：院长 ：信息工程学院 摘要本设计以智能仪表进行温度控制，通过 485 总线实现多个孵蛋器或若干车间当前运行状况的实时监控，系统便于调试，成本低，针对大型饲养场的育雏设置实时监控系统，可大大降低工作人员劳动强度，提高系统运行效果。该温度监控系统由智能仪表，装有组态王的工控机，加热电阻，固态继电器以及散热器等设备组成。该系统呈分布式控制，并且利用三级控制结构实现对孵蛋器恒温箱内部温度的实时监控。上位机和下位机采用了 R
2、S-485 总线实现信号的传送，从而现对孵蛋器恒温箱内部温度的实时监控。上位机选用了工控微机作为对数据进行集中管理的机器，可对上位机实施监控，用于设定温度和对下位机控制以及查询多点的温度值。下位机利用了多台智能仪表，对系统实行分散控制。为了确保系统的运行的可靠性，上位机对该孵蛋器温度监控系统进行管理与控制。综上，该系统能够实现孵蛋器内不同时刻的温度的控制与检测，与传统的普通养殖场相比，该系统成本比较低、靠性高、功耗较低、操作简单。不仅可以使用于孵蛋器，还可用于温室等其他场合，具有很好的实用价值。关键词：智能仪表；温度控制；组态王；RS-485 总线ABSTRACTThe design of i
3、ntelligent instrument temperature control , through 485 real-time monitoring of multiple incubators or several workshop current operating conditions , the system is easy to debug , low- cost , real-time monitoring system set up for large farms brood , can greatly reduce the work the labor intensity
4、and improve the system is running . The temperature monitoring system consists of the equipment, such as intelligent instrumentation, KINGVIEW equipped PC, the heating resistor, solid state relays, radiators and so on. The system is controlled by distributed, and three level control structure can re
5、alize a system of real-time monitoring of the temperature. Upper and lower computer uses the RS-485 bus for transmitting signals and enabling real-time monitoring of temperature. The upper computer using industrial computer as a centralized management unit to monitor and control the upper computer,
6、which can use to set the temperature, control lower computer and check the temperature at a plurality of positions. Lower computer using multiple intelligent instruments to control the system by decentralized control. In order to ensure the reliability of the system, the upper machine works to manag
7、e and control on the temperature monitoring system.Draw a conclusion, the system can realize the detection and control of temperature at different points in the greenhouse, compared with the traditional manual control, this system has the advantages such as simple operation, low power consumption, h
8、igh reliability, lower costs and so on, which can used not only in incubators , but also for other occasions，like greenhouses. It really has a very good practical value.Key Words: Intelligent instrument; Temperature control; KINGVIEW; RS485 busII目录摘 要.IABSTRACT .II1 绪论.11.1课题背景及研究意义.11.2控制方式.21.3研究内容.22 设计流程与设备类型.32.1系统设计原理.32.1.1设计流程.32.1.2RS-485 通信技术分析.32.1.3系统控制原理.62.2设备选型.72.2.1FP33 智能仪表.72.2.2测温传感器.102.2.3温度变送器.112.2.4RS232/RS485 转换模块.132.3本章小结.143 电气设计原理.163.1温度控制的电气原理.163.2温度
