基于PLC的规模化养猪场的温湿自动控制系统的设计解读.doc

XXXX 学号科类 工科 本科生毕业设计 基于PLC的规模化养猪场的温湿自动控制系统的设计 Design for the Automatic Control System of theTemperature And Humidity in the Large Scale Pig Farm XX 指导教师： XXX 职称 副教授 XX大学 XX XXX 学 院： XXXX学院 专 业： 电气工程及其自动化 年级： 2009 设计提交日期： 2013.5.7 答辩日期： 2013.5.11 答辩委员会主任： XXX XXX大学 20013 年 5 月 6 日 PLC的规模化养猪场的温湿自动控制系统的设计基于 XX 650201昆明XXXX学院，云南 要 摘 、风机、制冷器和供热泵等温湿度PLC本文通过采用由温湿度传感器、三菱维持养猪,控制设备构成的控制系统，对哺乳仔猪养猪场内温度和湿度进行控制以提高养猪场使哺乳仔猪猪群发挥最佳生长状况，场内的温湿度在一定范围内， 的经济效益。最终确定用方案再通过对两个方案优缺点的比较,本文首先提出两个方案,最二。在方案二中传感器接收到的信号通过外电路比较后，再由与门电路组合,控PLC终把温湿度信号组成九个组合，九个组合经驱动电路后输入PLC,最后由 制相应电机的启停。增加仔猪的成活率和日增重量有一定该系统的使用，对降低仔猪的发病率， 的作用。PLC 规模化养猪场；温度控制；湿度控制；关键词： Scale pig farms of temperature humidity automatic control system based on PLC of design Tanjing I ， Faculty of Engineering and Technology Yunan Agricultural UniversityHeilongtan Kunming 650201 ABSTRACT Are adopted in this paper, the temperature and humidity sensor, mitsubishi PLC, fan, refrigerator and heat pump, such as temperature and humidity control equipment design system, consisting of the lactation piglet pigs based on the temperature and humidity control. Maintain pig production field within a certain range of temperature and humidity, makes the lactation piglet pigs play optimal growth conditions, in order to improve the economic benefits of pig farms. This paper proposes two solutions, and then through the comparison of advantages and disadvantages of the two schemes, the final in scheme 2. In scheme 2. The received signal by comparing the external temperature and humidity sensor respectively divided into high, medium and low three gears, then the gate with the temperature and humidity of six gears nine, nine combinations by the drive circuit input after the PLC, and finally by the PLC control of th