DS18B20汇编程序编写实例.docx

多路温度采集显示系统设计与总结报告 参赛选手： 安徽电子信息职业技术学院 摘要：在传统的模拟信号远距离温度测量系统中，需要很好的解决引线误差 补偿问题、多点测量切换误差问题和放大电路零点漂移误差问题等技术问题， 才能够达到较高的测量精度。另外一般监控现场的电磁环境都非常恶劣，各种 干扰信号较强，模拟温度信号容易受到干扰而产生测量误差，影响测量精度。 因此，在温度测量系统中，采用抗干扰能力强的新型数字温度传感器是解决这 些问题的最有效方案，新型数字温度传感器?DS18B20?具有体积更小、精度更高、 适用电压更宽、采用一线总线、可组网等优点，在实际应用中取得了良好的测 温效果。 关键词：数字温度传感器，单总线 Abstract: In the traditional analog signal long-distance temperature measuring system, need good solve fuses error compensation?problem,?multi-point?measurement?error?and?amplifying circuit?switching?zero?drift?error?problem?and?some?other?technical problems,?only?then?can?achieve?high?measuring?accuracy.?Also?general monitoring?site?of?the?electromagnetic?environment?is?very?bad,?all kinds?of?jam,affect?precision,?Therefore,?in?temperature?measuring system,?using?anti-jamming?ability?of?the?new?digital?temperature sensor?is?to?solve?these?problems,?the?most?effective?solution?new digital?temperature?sensor?DS18B20?have?smaller,?higher?accuracy, voltage?applied?to?wider?and?adopt?1-wire?bus,?etc,?and?networking?in practical?application?made?. Key?word:?Digital?temperature?sensor,1-wire?bus 安徽电子信息职业技术学院 目录 1? 系统方法选择和论证?............................................................................................... 1 1.1? 题目要求?......................................................................................................... 1 1.1.1? 基本要求?...................................................................................................... 1 1.1.2? 说明?.............................................................................................................. 1 1.2? 系统基本方案?................................................................................................ 1 1.2.1? 各模块方案选择和论证?............................................................................ 1 1.2.2? 系统各模块的最终方案?............................................................................ 3 2. 系统的硬件设计与实现?..............................................................