随着我国现代化进程的脚步不断加快，各地方PM2.5值居高不下。针对这一现象，本课题以STM32单片机为控制核心，首先对国内外空气净化器做了具体分析，给出了一种电压可调式的办公室用空气净化器总体设计方案；其次，根据市场需求及方案可行性对比，对MCU最小系统单元、TFT_LCD液晶显示模块、L298N驱动模块、DHT11温湿度传感器、SDS011激光传感器进行了硬件电路设计，搭建了完整的硬件平台；再次，基于嵌入式操作系统采用模块化编程的方式，完成了对主程序、显示子程序、PWM输出子程序、数据采集子程序、上位机控制台操作子程序等设计；最后，进行空气净化器的整体测试，据试验结果可知，本设计实现了数据采集、触屏控制、档位选择、开关机设定、无线通信等功能。

关键词  STM32单片机  空气净化器  液晶显示  激光传感器  触屏控制

Title           Design of Office Air Purifier Control System

Based on Single Chip Microcomputer

Abstract

With the development of China's modernization pace continues to accelerate, the local PM2.5 value is very high．In view of this phenomenon，This paper uses STM32 MCU as control core，First of all domestic and international air purifier has done a detailed analysis，A voltage adjustable office with the overall design scheme of air purifier．Secondly，According to the market demand and the feasibility of scheme comparison，A minimum system of MCU unit，TFT_LCD liquid crystal display module，The L298N driver module，DHT11 temperature and humidity sensor，SDS011 laser sensor was designed，It has built a complete hardware platform．Again，The embedded operating system uses modular programming method based on，The completion of the main program, PWM display subroutine, output subroutine, data acquisition subprogram, PC console subroutine and so on．The last，The overall test of air purifier is finished，According to the test results，The design and implementation of data acquisition, touch screen control, gear selection, switch setting, wireless communication are realized．

Key Words  STM32Singlechip  Air Cleaner  LCD  Laser Sensor  Touch Screen Control