毕业设计（论文）- 多点温湿度监控系统设计.doc

辽宁石油化工大学
顺华能源学院
毕业设计(论文)
论文题目: 多点温湿度监控系统设计
学生姓名:
专业班级: 测控技术与仪器学号: 0803090602
指导教师:
2012 年 3 月 25日
多点温湿度监控系统设计
摘要
对温湿度的监测及控制在工农业生产和日常生活中具有极其重要用。本文研究了基于分散集中控制方式的多点温湿度远程无线监控系统,较为详细地介绍了DS18B20、SHT11温湿度传感器及ZigBee 技术。此可靠性高,成本低,便于扩展节点数,具有广阔的应用和推广前景。
本文就具体运用方面注重介绍了以 DS18B20 和单片机为核心的粮仓温湿度监控系统的硬件及软件设计。以AT89C51 单片机做主机,采用先进的“一线总线”传感器 DS18B20进行测温、通信。该系统具有测点多,精度高,速度快,稳定性好等特点,也可应用于其它相关的温度控制系统,通用性较强。该系统能对8000吨的粮仓进行300 点的温湿度采集和巡回检测显示,并且自动判断温湿度是否超标,是否需要报警,一旦超标能智能判断报警位置并且根据不同情况启动不同设备。
关键词:温湿度控制;DS18B20;SHT11;ZigBee;
Abstract
The monitoring of temperature and humidity is playing an important role in agricultural and industrial production and every -day life. The wireless remote monitoring system of protocol of DS18B20 in detail. Multiple temperature and humidity and ZigBee ology studied in this paper is based on distributed - centralized controlling method. In this paper, the system structure and working principle are described in detail and the design of relevant hardware and software is given. The system runs well in the test, and it has high liability, low cost, and easy node - ex-panding, which has a bright prospect of application and popularization.
In this paper, it introduces a design puter control system, which is based on the of single chip. “1–wire bus”of another design adoption spread the feeling machine to caryy on corespondenence‘ shave to measure to order much, the accuracy is high, the speed is quick, the stability goodence. Characteristics, also can be apply in other related temperatures control system, the in general use is stronger. That system ability carries on the humidity at 300 points collect and cruises to return to the examination manifestation to 8000 rice of the tons, and whether the automatic judgment degree of humidity exceed the limit or not, whether need to be alarmed, ,if exceed the limit can judge to report to the police the position automatically and different equipments of different circumstance start of basis.
Key words: The te