基于SHT11的温湿度监控系统设计

文档编号:JD1174  文档字数:12127,页数:37  附任务书，开题报告，文献综述，外文翻译，中期检查

毕业设计说明书（文档）中文摘要

 该文主要介绍基于SHT11的温湿度监测系统的设计，以温湿度传感器和单片机技术为核心并与其他电子技术相结合实现超限报警。当进行监测时，当前温湿度经过校准与一个14位的A/D转换器相连，将转换后的数字温湿度值送给二线总线，从而将数字信号转换为符合二线总线协议的的串行数字信号送入单片机，单片机对该串行数字信号进行处理并分析，处理转换后送入液晶显示，通过按键设定需要的温湿度值的范围，若该值超过预先设定的范围，蜂鸣器则发出声音报警，对应的状态灯也会亮，从而实现温度和湿度的监控。此系统结构简单、实用，具有广阔的应用前景。

关键词   传感器  单片机  液晶  按键

毕业设计说明书（文档）外文摘要

Title  Design of environment monitoring system based on SHT11

Abstract
This paper mainly introduced the design of environmental monitoring system based on SHT11, the temperature and humidity sensor and single-chip technology as the core and other electronic technology combining overrun alarm. When the monitored, the temperature and humidity is calibrated with a 14bit A/D converter is connected, the converted digital temperature and humidity value to the second bus, thereby converting a digital signal with the second-line bus protocol serial digital signal into the microcontroller, microcontroller on the serial digital signal processing and analysis, processing after the converted into the liquid crystal display, through the keys to set the desired temperature and humidity range of values, if the value exceeds a predetermined range, a buzzer sounds the alarm, the corresponding status lights will be bright, so as to realize the temperature and humidity monitoring. This system has the advantages of simple structure, practical, and has wide application prospect.

Keywords sensor  Single-chip microcomputer  Liquid crystal  button

目   次

1  引言 1
1.1  温湿度监测系统发展现状 1
1.2  系统的方案论证 2
1.3  显示模块方案选择与论证 3
1.4  设计介绍 3
2  硬件电路设计 5
2.1  处理模块 5
2.2  温度和湿度采集模块 6
2.3  按键模块 8
2.4  显示模块 9
2.5  报警模块 11
3  软件程序设计 14
3.1  主程序 14
3.2  显示子程序 15
3.3  按键子程序 19
3.4  温湿度采集子程序 20
4  系统调试 24
4.1  硬件调试 24
4.2  软件调试 24
结论 26
致谢 27
参考文献 28
附录A  电路原理图 28
附录B  Proteus仿真图 30
附录C  实物照片 31
附录D  元器件清单 32

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