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標(biāo)題: 單片機(jī)DHT11溫濕度檢測(cè)器程序仿真超閾值電阻絲模擬加熱水泵加濕電機(jī)風(fēng)扇降溫 [打印本頁(yè)]

作者: 挽風(fēng) 時(shí)間: 2022-12-9 13:48
標(biāo)題: 單片機(jī)DHT11溫濕度檢測(cè)器程序仿真超閾值電阻絲模擬加熱水泵加濕電機(jī)風(fēng)扇降溫
AT89C52單片機(jī)作為數(shù)據(jù)處理器，DHT11采集溫濕度數(shù)據(jù)，按鍵調(diào)整溫濕度報(bào)警閾值，LCD12864來(lái)進(jìn)行顯示溫濕度實(shí)時(shí)數(shù)據(jù)和報(bào)警閾值，當(dāng)DHT11檢測(cè)到的溫度高于報(bào)警閾值的時(shí)候，電阻絲進(jìn)行模擬加熱，當(dāng)檢測(cè)到的溫度低于報(bào)警閾值的時(shí)候，風(fēng)扇開(kāi)始進(jìn)行降溫；當(dāng)檢測(cè)到的DHT11濕度低于報(bào)警閾值的時(shí)候，水泵進(jìn)行模擬加濕，當(dāng)檢測(cè)到的DHT11濕度高于報(bào)警閾值的時(shí)候，蜂鳴器進(jìn)行鳴叫

仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機(jī)源程序如下:
#include "config.h"
#include "lcd12864.h"
#include "dht11.h"
#include "stdio.h"
#include "intrins.h"
#include "math.h"
#include "uart.h"
#include "key.h"

uint  t  = 20;
uint  z  = 40;

unsigned char tempH,tempL,humiH,humiL;

/*******************************************************************************
* 函數(shù) 名    : Display
* 函數(shù)功能                : 顯示溫濕度閾值
*******************************************************************************/

void Display(void)
{
      uchar t_Buffer[3];
      uchar z_Buffer[3];
      delay_ms(100);
      t_Buffer[0] = t/10+0x30;
      t_Buffer[1] = t%10+0x30;
      t_Buffer[2] = '\0';
      Write_String(2,72,0,t_Buffer);
      delay_ms(100);
      z_Buffer[0] = z/10+0x30;
      z_Buffer[1] = z%10+0x30;
      z_Buffer[2] = '\0';
      Write_String(6,72,0,z_Buffer);
}

/*******************************************************************************
* 函數(shù) 名    : key_press
* 函數(shù)功能                : 檢測(cè)獨(dú)立按鍵是否按下，按下則返回對(duì)應(yīng)鍵值
* 輸入    : mode=0：?jiǎn)未螔呙璋存I
                                 mode=1：連續(xù)掃描按鍵
* 輸出          :
                                       KEY1_PRESS：K1按下溫度閾值加1
                                 KEY2_PRESS：K2按下溫度閾值減1
                                 KEY3_PRESS：K3按下濕度閾值加1
                                 KEY4_PRESS：K4按下濕度閾值減1
                                 KEY_UNPRESS：未有按鍵按下
*******************************************************************************/
void key_press()
{
      uchar key = 0;
      key = key_scan(1);
      if (key==KEY1_PRESS)
      {
            if(t<100)
                     t++;
      }
      else if (key==KEY2_PRESS)
      {
            if (t>0)
            t--;
      }
      if (key==KEY3_PRESS)
      {
            if(z<100)
                     z++;
      }
      else if (key==KEY4_PRESS)
      {
            if (z>0)
            z--;
      }
}

void baojing(void)
{
      {

            if (tempH > t)
            {
                     Fengsan = 0;
                     Relay = 1;
            }
            else
            {
                     Fengsan = 1;
                     Relay = 0;
            }
      }
      {

            if (humiH > z)
            {
                     Suibeng = 1;
                     Beep = 1;
            }
            else
            {
                     Suibeng       = 0;
                     Beep = 0;
            }
      }
}

/*******************************************************************************
* 函數(shù) 名    : 主函數(shù)
*******************************************************************************/
void main()
{
      uchar temp_buf[3],humi_buf[3];
      UartInit();
      dht11_rst();
      if(dht11_check()<0)
      {
            printf("DHT11 ERROR!\r\n");
      }
      else
      {
            printf("DHT11 OK\r\n");
      }

//       EA = 1;
      Init_12864();
      Qin();
      Write_String(0,0,0,"溫度");
      Write_String(0,32,0,":");
      Write_String(0,60,0,"℃");
      Write_String(2,0,0,"溫度閾值");
      Write_String(2,64,0,":");
      Write_String(2,90,0,"℃");

      Write_String(4,0,0,"濕度");
      Write_String(4,32,0,":");
      Write_String(4,60,0,"%RH");
      Write_String(6,0,0,"濕度閾值");
      Write_String(6,64,0,":");
      Write_String(6,90,0,"%RH");


      while(1)
      {
            Display();
            key_press();
            dht11_Read_Data(&tempH,&tempL,&humiH,&humiL);
            delay_ms(500);
//             Write_String(2,40,0,"&tempH");
            temp_buf[0]=tempH/10+0x30;
            temp_buf[1]=tempH%10+0x30;
            humi_buf[0]=humiH/10+0x30;
            humi_buf[1]=humiH%10+0x30;
            Write_String(0,40,0,temp_buf);
            Write_String(4,40,0,humi_buf);
            baojing();
//             printf("TEMP:%bu.%bu HUMI:%bu.%bu",tempH,tempL,humiH,humiL);
//             printf ("\r\n");
            printf(" 當(dāng)前溫度:%bu.%bu",tempH,tempL);
            delay_ms(5);
            printf ("\r\n");
            delay_ms(5);
         printf(" 當(dāng)前濕度:%bu.%bu",humiH,humiL);
            delay_ms(5);
      printf ("\r\n");
            delay_ms(5);
      }
}

Keil5代碼與Proteus8.13仿真下載:

溫濕度檢測(cè)（12864）.zip (173.46 KB, 下載次數(shù): 89)

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