文档介绍：无线遥测温度系统的设计
摘要
随着人们生活水平的不断提高,单片机控制无疑是人们追求的目标之一,它所给人带来的方便也是不可否定的,其中温度测控系统就是一个典型的例子,但人们对它的要求越来越高,要为现代人工作、科研、生活提供更好的更方便的设施就需要从数单片机技术入手,一切向着数字化控制,智能化控制方向发展。
本设计所介绍的智能数字式温度测控系统,它具有读数方便、测温范围广、测温准确、其输出温度采用数字显示等特点,主要用于室内环境温度检测与控制。本设计主要使用单片机PIC16F877A,测温传感器使用DS18B20,用3个共阴极LED数码管以动态显示方式实现温度显示,能准确达到以上要求。
DS18B20温度传感器集温度测量和A/D转换于一体,具能够直接输出数量,与单片机接口电路简单等优点。因此,用DS18B20温度传感器和单片机构成的温度测控系统具有市场推广价值
关键词单片机;DS18B20;传感器
Wireless temperature sensing system design
Abstract
As people living standard rise ceaselessly, the single-chip puter control is undoubtedly one of the goals of the people to pursue, it brings convenience is negative, temperature measurement and control system is a typical example of it, but the demand is higher and higher to modern work, scientific research, and provide a better life more convenient facilities need from several single-chip puter, all toward digital control system, intelligent control direction.
The design of the intelligent digital temperature is introduced, and its control system with reading convenient, temperature range, temperature measurement accuracy, its output temperature using digital display, etc. Mainly used in indoor environment temperature measurement and control. This design using SCM PIC16F877A mainly temperature sensor DS18B20, use, with three of the cathode LED digital display mode to realize dynamic tube temperature display, can reach above requirements.
The temperature sensor DS18B20 set temperature measurement and A/D conversion, can directly in quantity, and SCM output interface circuit is simple, etc. Therefore, with the temperature sensor DS18B20 and temperature measurement and control system of the single market promotion value
Keywords MCU;DS18B20;Sensor
目录
1 绪论 5
选题背景 6
主要研究内容 6
2 硬件理论基础 7
PIC16F877A单片机简介 7
单片机的发展 7
PIC系列单片机特点 7
PIC16F877A单片机性能 8
PIC16F877A单片机外观及结构图 9
PIC16F877A的输入/输出接口 10
PIC16F877A I/O端口内部结构 11
PIC16F877A基本输入/输出端口的工作原理 12