基于单片机的环境温湿度及PM2.5浓度监测仪的设计

Design of a Monitoring Instrument for Environmental Temperature,Humidity and PM2.5 Concentration Based on Single-chip Microcomputer

为监控环境的各项指标,营造一个更加健康的室内环境,设计一款多功能的环境指标监测系统,使人们能够及时对环境的变化并做出相对应措施。该系统以STC89C52单片机为控制中心,外部监测电路由DHT11温湿度传感器和GP2Y1010AU0F粉尘传感器构成。系统完成监测后将数据输入单片机内处理后显示在LCD1602液晶屏上。当环境参数超过自定义阈值时蜂鸣器启动报警功能,并且点亮点对应的LED灯。

In order to monitor various environmental indicators and create a healthier indoor environment,a multi-functional environmental indicator monitoring system will be designed to enable people to respond to changes in the environment in time and take corresponding measures.This system uses STC89C52 single-chip microcomputer as the control center,and the external monitoring circuit is composed of DHT11 temperature and humidity sensor and GP2Y1010AU0F dust sensor.After the system completes the monitoring,the data is input into the single-chip microcomputer for processing and then displayed on the LCD1602 LCD screen.When the environmental parameters exceed the custom threshold,the buzzer will start the alarm function,and the corresponding LED light will be lit.