基于STM32的智能加湿器设计_基于stm32开发的智能加湿器

作者：代码探险家 | 2024-07-14 17:31:18

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基于stm32开发的智能加湿器

一、任务简述

本次设计采用基于单片机的智能加湿器系统，以STM32F103C8T6和温湿度传感器DHT11为核心，通过湿度传感器采集和转换温湿度信号，再利用单片机进行数据分析和处理，实现智能开启和关闭加湿功能，并通过继电器控制加湿器，以实现对湿度的精准调节。实现加湿器防干烧和实时显示室内相对湿度的功能，需要外接辅助电路的支持。由于其简洁明了的电路设计、易于读取的特点以及高精度的检测能力，该系统在可靠性和实用价值方面均呈现出卓越的水平。

二、总体设计

三、软件设计


Main主程序
#include "common.h"
#include "lcd1602.h"
#include "dht.h"
 
extern unsigned char U8RH_data_H;
extern unsigned char U8T_data_H;
 
sbit key1 = P1^0;//切换键
sbit key2 = P1^1;//加键
sbit key3 = P1^2;//减键
 
sbit RELAY = P3^7;//继电器
 
sbit beep = P2^0;//蜂鸣器
sbit ShuiWei=P1^4;//水位传感器
 
unsigned char HumiMin = 15;//湿度下限
unsigned char setn = 0;//设置标志
 
bit mode = 0;//模式：0是自动模式，1是手动模式
 
void keyscan()
{
 	if(key1 == 0)//切换键按下
	{
	 	delay_ms(10);
		if(key1 == 0)
		{
			beep = 0;
			delay_ms(100);
			beep = 1;
		 	while(key1 == 0);//等待按键松开
			mode = !mode;
			if(mode==0)lcd_write_str(14,0,"Zd");
			else lcd_write_str(14,0,"Sd");
		}
	}
	if(key2 == 0)
	{
	 	delay_ms(10);
		if(key2 == 0)
		{
			beep = 0;
			delay_ms(100);
			beep = 1;
		 	while(key2 == 0);
      if(mode==0)//在自动模式下是加键
			{
				  if(HumiMin < 99)HumiMin++;
					lcd_write_char(9,1,HumiMin/10+0x30);
					lcd_write_char(10,1,HumiMin%10+0x30);
			}
			else//在手动模式下是手动开启键
			{
					RELAY = 0;//继电器开启
			}
		}
	}
	if(key3 == 0)
	{
	 	delay_ms(10);
		if(key3 == 0 )
		{
			beep = 0;
			delay_ms(100);
			beep = 1;
		 	while(key3 == 0);
			if(mode==0)//在自动模式下是减键
			{
				  if(HumiMin > 0)HumiMin--;
					lcd_write_char(9,1,HumiMin/10+0x30);
					lcd_write_char(10,1,HumiMin%10+0x30);
			}
			else//在手动模式下是手动关闭键
			{
					RELAY = 1;//继电器关闭
			}
		}
	}
}
 
void main()
{
	  unsigned int count;
	  short temperature;
	  short humidity;
	  bit shanshuo=0;
 
	  lcd_init();//1602液晶初始化
	  lcd_write_str(0,0,"00C Humi:00%  Zd");
	  lcd_write_str(0,1," Minimum:00%    ");
	  lcd_write_char(9,1,HumiMin/10+0x30);
		lcd_write_char(10,1,HumiMin%10+0x30);
	  do
		{
			RH();delay_ms(100);
	  }while(U8RH_data_H==0&&U8T_data_H==0);
	  while(1)
	  {
	     keyscan();//按键扫描
			 if(count++>=500)//延时一段时间
			 {
					 count=0;
				   shanshuo=!shanshuo;
				 
					 RH();
				 
					 //读出温湿度，只取整数部分
					 humidity = U8RH_data_H;
					 temperature = U8T_data_H;
				 
					 lcd_write_char(0,0,temperature/10+0x30);
					 lcd_write_char(1,0,temperature%10+0x30);
					 lcd_write_char(9,0,humidity/10+0x30);
					 lcd_write_char(10,0,humidity%10+0x30);
 
           if(ShuiWei==0 && shanshuo)//缺水
					 {
								lcd_write_str(14,1,"Qs");
						    beep = 0;
					 }
					 else
					 {
							 lcd_write_str(14,1,"  ");
						   beep = 1;
					 }
					 if(mode==0)//在自动模式下
					 {
							 if(humidity<=HumiMin)RELAY=0; else RELAY=1;//湿度低于下限，开启加湿
					 }
			 }	 
       delay_ms(1);		 
   	}
}