文档介绍：目录
摘要 1
1 引言 2
2 设计要求 3
3 扩展功能 3
4 总体设计方案 3
3
4
DS18B20温度传感器与单片机的接口电路 7
系统整体硬件电路 8
5系统软件算法分析 9
10
11
11
计算温度子程序 11
显示数据刷新子程序 12
6总结与体会 12
7谢辞: 12
8附录 13
数字温度采集与报警
摘要
近年来随着科技的飞速发展,单片机的应用正在不断地走向深入,同时带动传统控制检测日新月益更新。在实时检测和自动控制的单片机应用系统中,单片机往往是作为一个核心部件来使用,仅单片机方面知识是不够的,还应根据具体硬件结构,以及针对具体应用对象特点的软件结合,以作完善。本系统是以单片机的基本语言汇编语言来进行软件设计,使指令的执行速度快,节省存储空间。为了便于扩展和更改,软件的设计采用模块化结构,使程序设计的逻辑关系更加简洁明了。使硬件在软件的控制下协调运作。
, 本系统介绍的是一种基于单片机控制的数字温度采集系统,属于多功能温度采集系统,可以对不同温度进行精确采集,同时设置上下报警温度,当温度不在设置范围内时,可以报警。
关键词:单片机,数字控制,报警, DS18B20,AT89S51
Abstract
With the development at full speed of science and technology in recent years, the application of the one-puter is being moved towards deepenning constantly, drive tradition is it measure crescent benefit to upgrade day to control at the same time. In measuring in real time and automatically controlled one-puter application system, the one-puter often uses as a key part, only one-puter respect knowledge is not enough, should also follow the concrete hardware structure , and direct against and use the software of target's characteristic bine concretly, in order to do perfectly. This system carries on software design with the basic language assembler language of the one-puter, make the execution of the order quick in speed, save the memory space. In order to expand and alter, the design of the software adopts the module structure, make the logic relation of designing program more inct and clear. Make the hardware coordinate operation under the control of the software.
The system was introduced by the acquisition of a digital temperature control of puter system is multifunctional temperature acquisition system. Precision Acquisition of different temperature, temperature alarm set up from top to bottom, when the temperature is not within the range, could be reported.
Key words : microcontroller, digital control, alarm, DS18B20, AT89S51
1 引言
随着人们生活水平的不断提高,单