基于物联网的花卉养殖监控设计系统与研究毕业论文+开题报告

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DS18B20 11

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