多点无线温度采集系统.doc

-  PAGE 28 -  PAGE III HYPERLINK H:\\徐帆毕业设计\\毕业设计-2010\\通信\\soar\\Application Data\\Microsoft\\Word\\*******要求： 中英文摘要、关键词要准确，不能有语法和用词错误，此内容为今后审查重点。 关键词之间要用分号。摘 要 本文介绍一种多点无线温度采集系统的设计与制作。该系统能在一定时间内通过DS18B20测量多达6561个点的温度，并能将温度数据显示在LED数码管上。其中从机能将温度数据通过DF无线模块和PT2262/2272芯片用无线方式发送给主机，实现温度的无线采集。 温度传感器选用DS18B20，实际应用中测量范围可达-10℃~50℃,精度可达0.1℃。通过LED四位数码管显示温度，无线传输模块选用DF模块以及配套芯片PT2262/2272，可在10m范围内进行传输。用KEIL软件编写程序并最终通过AT89S52单片机作为控制核心使整个系统顺利运行。 关键词：多点温度采集；无线传输；DF模块；DS18B20； Abstract This paper introduces the design and production of a kind of multi-point wireless temperature gathering system. This system can measure temperature of 6561 points in a certain period via DS18B20, and can display temperature data in the LED digital display tube. Temperature data can be sent from client to host through wireless means such as DF module and PT2262/2272. DS18B20 is used as temperature sensor. It can measure temperature range from -10℃ to 50℃ and precision can reach 0.1℃. Temperature displayed by LED four digital pipe, using DF module and PT2262/2272 to realize 10m wireless transmission ,writing programs by KEIL software, and running system smoothly by AT89S52. Keyword: temperature gathering; wireless; DF module; DS18B20;  目录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc295398561 1 绪 论  PAGEREF _Toc295398561 \h 1  HYPERLINK \l _Toc295398562 1.1 温度测量背景及意义  PAGEREF _Toc295398562 \h 1  HYPERLINK \l _Toc295398563 1.2 无线通信技术概述  PAGEREF _Toc295398563 \h 1  HYPERLINK \l _Toc295398564 1.3 短距离无线通信特征  PAGEREF _Toc295398564 \h 2  HYPERLINK \l _Toc295398565 1.4 课题主要工作  PAGEREF _Toc295398565 \h 3  HYPERLINK \l _Toc295398566 1.5 本章小结  PAGEREF _Toc295398566 \h 3  HYPERLINK \l _Toc295398567 2 系统相关技术介绍  PAGEREF _Toc295398567 \h 4  HYPERLINK \l _Toc295398568 2.1 DS18B20简介  PAGEREF _Toc295398568 \h 4  HYPERLINK \l _Toc295398569 2.1.1 DS18B20主要特性  PAGEREF _Toc295398569 \h 4  HYPERLINK \l _Toc295398570 2.2 DS18B20内部结构  PAGEREF _Toc2953