摘要：随着社会的发展，人们对生产环境和生活环境都有了较高的要求。温湿度与人们的日常生活息息相关，在石油、航天、制药、农业、物流、食品等领域都对温湿度有相应的标准要求。因此，温湿度的测量和监控技术已成为这些行业的重要技术，本课题的研究非常具有实用性。82477

本文温湿度测量系统设计的控制核心是STC51系列单片机，采用STH11温湿度一体化传感器，以及外围电路用到显示模块，语音模块，按键模块，无线蓝牙传输模块。温湿度测量系统通过温湿度传感器检测温度和湿度数据，传感器把模拟信号转成数字信息传送到STC51单片机，单片机接收到数据后，在LCD液晶屏上显示，同时，把数据通过无线传输模块把数据上传到上位机系统。可以用按键设置温湿度的阀值，当检测到的温度或湿度不符合设置的阀值时，单片机控制语音模块进行报警。

本文介绍了温湿度测量系统的设计原理，详细描述了硬件设计和软件设计内容，并用Proteus仿真软件通过仿真实验，验证了系统的可行性。

关键词：  单片机；温湿度测量；SHT11

Design of temperature and humidity measurement system based on PROTEUS

Abstract：With the development of society, people have higher requirements on the production environment and living environment。 Temperature and humidity are closely related to people's daily life, in the oil, aerospace, pharmaceutical, agriculture, logistics, food and other fields have a corresponding standard temperature and humidity requirements。 Therefore, the temperature and humidity measurement and monitoring technology has become an important technology in these industries。

The control of the core design of temperature and humidity measurement system in this paper is the STC51 series microcontroller, using STH11 temperature and humidity sensor integration, and the external circuit used in display module, voice module, keyboard module, Bluetooth wireless transmission module。 Temperature and humidity measurement system with temperature and humidity sensors to detect temperature and humidity sensor data, the analog signal into digital information is transmitted to the STC51 microcontroller, microcontroller after receiving the data, display, at the same time on the LCD screen, the data on the data to the computer system through the wireless transmission module。 Can be used to set the threshold value of temperature and humidity, when the detected temperature or humidity does not meet the set threshold, the microcontroller controls the voice module for alarm。

This paper introduces the design principle of temperature and humidity measurement system, describes in detail the hardware design and software design, and uses proteus simulation software to verify the feasibility of the system。

Key Words：  MCU；Temperature and Humidity Measurement；SHT11

目录

1  引言 1

1。1  课题的目的和意义 1

1。2  国内外研究现状与水平 1

1。3  发展趋势 1

2  总体方案设计论证 3

2。1  单片机的选择 4

2。2  温湿度传感器的选择 6

2。2。1  方案一、分别选择温度传感器和湿度传感器 6

2。2。2   方案二、采用温湿度一体化数字传感器 8

2。3  显示电路的选择 9