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摘 要
本文介绍的是一个基于物联网的花卉养殖监控系统，主要用来提供测温的解决方案，同时还能实时监控温度变化趋势，以及报警功能。它利用STC89C52RC单片机，DS18B20，蜂鸣器报警电路和LCD1602来实现温度检测控制功能。温度检测是使用的DS18B20温度传感器，将检测得到的温度通过单片机单总线的协议读取并将其显示在LCD1602液晶屏上。除此之外，它还能通过按键设置温度的上限值，如果温度超过上限，则蜂鸣器报警，大大提高了系统的安全性。本文在后续章节详细介绍了系统的总体方案设计，硬件设计，软件设计等。
关键词：温度检测控制；单片机；DS18B20；报警
Abstract
This paper introduces a flower breeding monitoring system based on the Internet of things, which is mainly used to provide a solution for temperature measurement, and can also monitor the trend of temperature change in real time and alarm function. It uses STC89C52RC single chip microcomputer DS18B20, buzzer alarm circuit and LCD1602 to realize the function of temperature detection and control. The temperature detection is a DS18B20 temperature sensor, which is read by single bus protocol of single chip microcomputer and displayed on LCD1602 LCD screen. In addition, it can also set the upper limit of the temperature by pressing the button, if the temperature exceeds the upper limit Then the buzzer alarm greatly improves the security of the system. In the following chapters, this paper introduces the overall design of the system, hardware design, software design and so on.
Keywords: temperature detection control; single chip microcomputer DS18B20; alarm
目 录
1、绪论1
1.1课题背景1
1.2 本课题研究意义2
2、 系统总体方案设计3
2.1、传感器部分3
2.2、主控制部分4
3、系统硬件设计6
3.1 STC89C52RC单片机主控模块设计6
3.2单片机最小系统9
3.2.1时钟电路9
3.2.2复位电路10
3.2.3 STC89C52RC中断技术概述10
3.3 温度采集模块DS18B2011
3.4按键模块设计13
3.5蜂鸣器报警电路13
3.6 LCD1602液晶显示14
4、软件设计16
4.1软件介绍16
4.2 主程序流程图设计17
4.3各子程序设计18
4.3.1按键设置子程序18
4.3.2 DS18B20温度检测子程序19
4.3.3 LCD1602液晶显示子程序20
4.3.3 按键设置子函数22
5、总结与展望23
6、 参考文献24
7、致谢25
附录一 系统原理图26
附录二 系统部分源程序27
