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论文编号:ZD1262 论文字数:23552,页数:45 附原理图，外文翻译
摘要
纺织空调是棉纺厂重要设备。要提高产品质量和发展新产品都对车间温湿度有更高的要求；棉纺厂的空调用电占全厂用电量的15-25%，是节能工作的重点对象；降低车间空气含尘量不仅能改善劳动条件，而且能减少产品的瑕疵。可见纺织空调对保护工人身体健康，提高产品质量，降低消耗和成本，降低工人劳动强度和提高劳动生产率有重要作用。
织布空调自动控制系统是一种针对织布车间温湿度进行调节的空调系统。该系统主要通过改变车间的送风量来调节车间的温湿度，使之达到设计要求。
该空调系统通过对室外温度的检测来判别冬夏季节的转换，温度设有上下限控制并有超限报警功能。
传感器采用湿敏陶瓷湿度传感器和铂电阻温度传感器。风机及水泵调节电路采用不可逆PWM调速电路。风门调节采用步进电机驱动。
单片机控制系统采用89C51单片机最小系统。人机接口采用8279键盘显示电路。
同时，本文还论述了棉纺织厂温湿度调节的基本原理和原则，并附有软件程序。
关键字：温湿度控制 AT89C51单片机 ADC0809传感器 8279键盘显示电路
ABSTRACT
Air-condition is one of the most important equipment of textile mill, It needs higher requirement on air temperature and humidity to improve the production and to develop new varieties. The consume of electricity of air-condition occupies 15-25 percent of the hole textile mill. It’s the emphasis of energy saving. To lower the amount of dust in the air in workshop can not only improve he condition of laboring, but also reduce the flaw on the product. As you see, air-condition can do much work on labor heath protecting, quality of the production improving, consume and cost lowering, the intensity of labor reducing and the production efficiency of labor raising.
The system of spinning air-condition automatic control is a system of air in the which counters the adjustment of the temperature and the humidity of air in the workshop, The system adjusts the temperature and humidity of the room to meet the requirement of design mainly by changing the quantity of the wind blowing.
The air-condition system judges the changing of season by checking up the temperature outside. And it has the ability to alarm when the temperature is out of the control.
The sensors are ceramics humidity sensor and Pt register sensor. The circuit of motor control is PWM unreversible circuit. The air door is driven by the pace-motor.
The central control system of single single chip micro-controller adopts 89c51 CPU. The interface between person and the system adopts 8279 keyboard and showing circuit.
The design discusses the basic principle of the air temperature and humidity in textile mill adjustment, too and enclosed herewith the program of software.
Keywords：The temperature humidity controls， AT89C51 the monolithic integrated circuit， ADC0809 sensor， 8279 keyboards display circuit
目 录
绪论 ………………………………………………………………………1
1.1 空调的基础知识及发展………………………………………………………1
1.2 方案论证………………………………………………………………………4
棉纺厂空调调节原理 ……………………………………………………6
2.1 空气的主要参数 …………………………………………………………… 6
2.2 空气条件与人体健康的关系 ……………………………………………… 6
2.3 温湿度与棉纺织生产的关系 ……………………………………………… 7
2.4 温湿度调节 ………………………………………………………………… 8
第三章 棉纺厂织布车间空调自动控制硬件设计 ………………………………11
3.1 控制要求………………………………………………………………………11
3.2 设计方案及系统示意图和框图 ……………………………………………11
3.3 系统的硬件组成及原理 …………………………………………………… 13
3.3.1 8279键盘/显示电路……………………………………………………… 13
3.3.2 LED显示部分 ………………………………………………………………15
3.3.3 ADC0809芯片引脚功能…………………………………………………… 16
3.3.4 89C51最小应用系统设计 …………………………………………………19
3.3.5传感器的功能及其技术参数 ………………………………………………23
3.3.6风机测速电路 ………………………………………………………………26
3.3.7角度测量电路 ………………………………………………………………27
3.3.8风门角度控制 ………………………………………………………………29
3.3.9转速调节 ……………………………………………………………………30
第四章 棉纺厂织布车间空调自动控制软件设计……………………………… 35
4.1 主程序流程图…………………………………………………………………35
4.2 温度检测子程序流程图 …………………………………………………… 36
4.3中断流程图及子程序流程图…………………………………………………37
4.4 程序清单 ………………………………………………………………… 38
结束语 …………………………………………………………………………… 44
参考文献 ……………………………………………………………………… 45
附录A 温度变送电路 …………………………………………………………… 46
附录B 织布车间空调自动控制原理图 ………………………………………… 47
