文档介绍：毕业设计(论文)
题目: 温度采集报警系统
英文题目:
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专业: 自动化
二零 06 年 06 月
摘要
该系统主要叙述了一种运用1—Wire结构的数字温度传感器DS18B20设计温度采集报警系统的设计方案。
该系统由硬件和软件两部分组成,硬件部分。包括以单片机为主控的电路模块,以DS18B20为主的传感器采集模块,报警模块,键盘输入模块和显示输出模块。通过单片机对温度传感器的读取,实时采集数据,从而来监控环境的温度,并根据实际的需要来设定高低温界限来实现高温和低温报警。该系统与以往的温度采集报警系统不同,因为它采用了新一代的一线口温度传感器DS18B20,独特而且经济的特点,使用户可轻松地组建传感器网络,为测量系统的构建引入全新概念,给人们带来了更方便控制,更利于人们的使用。它和单片机的连接的硬件电路更简单,实时性良好,有良好的人机界面可以应用在药液发酵控制、大棚种植、食品保鲜等控制系统中。
关键词: 1-Wire BUS;DS18B20;单片机
Abstract
This system is a design about the application of the 1-wire digital temperature sensor DS18B20.
That system is constitute by the hardware and software two parts。Include the electric circuit mold piece that controls for the lord with a machine, regard DS18B20 as principle of spread the feeling machine to collect the mold piece, report to the police the mold piece, the keyboard importation mold piece and show the exportation mold piece. The environmental temperature is controlled by gathering the temperature data through the microprocessor in real time. And it sends a warning signal of lower or higher temperature according to the virtual system collects with former temperature to report to the police the system dissimilarity, because it adopts a temperature of the new generation to spread the feeling machine DS18B20, special and the characteristics of the economy, use door can easily the set sets up to spread the feeling work, in order to measure the system to set up to lead into the all new concept, brought the more convenient control to the people, more benefit in the people's usage. The scheme could have application in the liquid medicine ferment control 、shed planting and food fresh control systems.
Keywords
1-Wire BUS;DS18B20;microprocessor
目录
绪论 1
2
DS18B20的内部结构 2
DS18B20的温度转化 3
DS18B20的存储器 4
DS18B20的暂存存储器 4
DS18B20的配置寄存器 5
DS18B20的操作命令 5
DS18B20的ROM命令 5
DS18B20的功能命令 6
DS18B20的读写时序 7
DS18B20的初始化时序 7