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AT89C51单片机温湿度数据采集无线传感器的开发与应用

时间:2020-01-09 21:32来源:毕业论文
AT89C51单片机小系统,实现温湿度数据采集的传感器是SHT11温湿度传感器,并且使用单片机小系统控制继电器通断实现自动控制温湿度。我的设计由六个模块组成

摘要:该设计采用的是AT89C51单片机系统,实现温湿度数据采集的传感器是SHT11温湿度传感器,并且使用单片机小系统控制继电器通断实现自动控制温湿度。我的设计由六个模块组成,分别是由AT89C51单片机构成的小系统模块、SHT11温湿度监测模块、加热和降温以及加湿排湿控制模块、温湿度设置模块,液晶显示模块以及上位机模块。可以通过SHT11数字温湿度传感器,并将收集到的温度和湿度以及设定的温度和湿度上下限通过LED数码管显示。并且通过TTL串口通信将收集到的温湿度数据发送到上位机,上位机实现查看和记录,并且可以设定温度和湿度的上下限,当实时温度超过设定的温度下限时,继电器联通使用加热器加热,以达到设定值;同样,当实时温度超过设定的上限时,开启降温风扇,达到降温效果。湿度也同理,实时温度超过设定湿度上下限时,通过继电器控制加湿器或者排风扇抽湿。使用该系统,可以对温室大棚室内兰花养殖等对温湿度要求比较高的场所实现有效、可靠的检测与控制,并且可以将数据发送到上位机电脑记录查询,从而实现温室或室内养殖的作物在最适宜的温湿度条件下培育,提高质量和产量。43794

毕业论文关键词:AT89C51单片机;温湿度控制;温湿度显示;上位机;数据记录查询

Development and application of wireless sensor -- temperature and humidity data acquisition

Abstract:This design uses the AT89C51 microcontroller chip as the core, using SHT11 temperature and humidity sensors to collect and control the temperature and humidity in real time, and realize the automatic control of temperature and humidity. The system consists of embedded microcontroller small system module, temperature and humidity acquisition module, heating and cooling module, humidity and humidity module, button and display module and PC module seven parts. Can pass SHT11 digital temperature and humidity sensors, and will collect the temperature and humidity as well as the set temperature and humidity on the lower limit through the LED digital tube display. And through the TTL serial port communication will be collected by the temperature and humidity data sent to the host computer, the host computer implementation of viewing and recording, and the upper limit and lower limit of the temperature and humidity can be set, when the lower limit of the temperature real-time temperature exceeds the set relay Unicom use heating, to reach a set value; similarly, when the upper limit of the real-time temperature exceeds the set, open the cooling fan, to achieve the cooling effect. The humidity in real-time temperature exceeds the set humidity limit, through the relay to control the exhaust fan humidifier or dehumidifier. Using the system, can achieve  

effective and reliable detection and control of greenhouse indoor orchid breeding of temperature and humidity requirements relatively high place, and you can query data is sent to PC computer records, so as to realize the cultivation of greenhouse and indoor breeding of crops in the most suitable temperature and humidity conditions, improve the quality and yield.

Keywords: AT89C51 MCU; temperature and humidity control; host computer; data record and query 

 目录

摘要 i

Abstract i

目录 IV

1 绪论 1

1.1 课题的目的和意义 2

1.2 国内外研究现状与水平 2

1.3 发展趋势和未来的市场占有 3

1.4 论文组织结构 AT89C51单片机温湿度数据采集无线传感器的开发与应用:http://www.lwfree.com/zidonghua/lunwen_44813.html

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