毕业设计论文-基于低能耗单片机的数字体温计设计及仿真.doc

****** 2011届毕业生毕业论文（设计） 题目：基于低能耗单片机的数字体温计设计及仿真实现 院(系)别 *********** 专 业 *********** 班 级 ******** 学 号 *********** 姓 名 **** 指导教师 ******* 二○一一年六月  摘 要 本设计主要研究了基于低能耗单片机数字体温计的原理与实现。设计分为硬件与软件两部分，其中硬件设计部分由数据采集模块，显示模块，按键及报警模块部分组成，实现了整体电路的设计及数据采集模块，显示模块的整合。中央处理芯片使用的为51单片机，温度传感器为DS18B20，用LCD1602显示温度值。软件设计部分使用C语言进行编程，用keil作为编程软件，软件设计部分实现了将温度传感器采集的数字信号以十进制的形式表示，并在LCD1602上给予准确显示，当温度值超过标准体温值（设定值）时蜂鸣器报警，测定温度用按键予以保持。 与传统的水银体温计相比，本设计的基于51单片机的数字体温计能够准确测温，精确度在0.0625，显示温度在一位小数点。测量时间短，单次测量反应时间不到一秒钟。本数字体温计携带方便，不易破碎，精度高。 关键字：数字体温计，51单片机，DS18B20，LCD1602 Abstract Through the paper, I researched the principle and achievement of the digital thermometer, which is based on Single-chip microcomputer. The design is divided into two parts: the hardware part and the software part, the hardware part is divided into data collection part, displaying part, keying and alerting part, while realizes the design of the whole circuitry, the data acquisition and the synthesized of the display part. The central processing chip is 51 Single-chip microcomputer, the temperature sensor is DS18B20 and the displayer is LCD1602. The software design part uses C language to programme, uses keil as the programme software, the software design part realizes turning the signal temperature sensor collects to decimal system, displaying the temperature on LCD1602, when the temperature is higher than the standard temperature (set value), the buzzer give an alarm, the key is used to keep the measured temperature. Compared the digital thermometer with the traditional thermometer, the digital thermometer based on Single-chip which is cheap can measure temperature accuracily. The accuracy is 0.0625. It can display the number at one radix point. The measuring time is short, the time measure each time is shorter than one second. It can be carried convenie