基于单片机的温湿度监测和报警系统设计  

The Design of Temperature and Humidity Monitoring and Alarm System Based on MCU

作　　者：陈英俊[1] 

机构地区：[1]广东石油化工学院机电工程学院,广东茂名525000

出　　处：《广东石油化工学院学报》2013年第4期42-46,共5页Journal of Guangdong University of Petrochemical Technology

基　　金：茂名市科技计划资助项目(20120259);广东高校石油化工过程装备故障诊断与信息化控制工程技术开发中心资助项目(512033)

摘　　要：传统模拟式温度、湿度传感器通常存在复杂的校准和标定问题。使用DHT11数字型温湿度复合型传感器,设计了一种基于AT89C52单片机温湿度监控和报警系统。系统可以实时将当前环境温湿度数字显示在液晶LCD上,实现温湿度的监控功能,并且可以设定温度和湿度的上下限,当系统检测到当前温湿度超出界限时可以通过蜂鸣器智能报警。研制出来的系统精度高、功耗低、使用方便,可以满足日常生活和工厂环境等的温湿度监控需要。Becatuse of the complicated calibration problem of the classical ＇analog sensors of temperature, and humidity, a new type of temper- ature and humidity monitoring and alarm system is designed, which is based on a MCU AT89C52 and a digital temperature and humidity se- nor DHTI I. The system can display the temperature and humidity of environment on LCD at real time, thus the monitoring function is real- ized. In addition, the upper and lower limits of temperature and humidity can be set. When the temperature or humidity is beyond the limit, the system will alarm through a buzzer. The system is manufactured and can operate with high accuracy, low power assumption and conve- niently. It can satisfy the temperature and humidity monitoring requirements in daily life and factory environment.

关 键 词：温度监测 湿度监测 单片机 报警系统 

分 类 号：TP212.9[自动化与计算机技术—检测技术与自动化装置]