?功能介紹

• ?以51/STM32單片機(jī)作為主控系統(tǒng)；
• ? LCD1602液晶顯示當(dāng)前時(shí)間、溫濕度、藥品重量
• ? 3次吃藥時(shí)間、藥品類目和藥品數(shù)量
• ?HX711壓力采集當(dāng)前藥品重量
• ?紅外感應(yīng)當(dāng)前藥盒是否打開
• ?DS1302時(shí)鐘芯片顯示當(dāng)前年月日、時(shí)分秒、星期
• ?DHT11采集當(dāng)前環(huán)境溫度和濕度? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
• 手機(jī)端連接WIFI后可以顯示當(dāng)前溫濕度、重量、吃藥時(shí)間等信息
• 手機(jī)端可以設(shè)置當(dāng)前吃藥時(shí)間、藥品種類、藥品數(shù)量等信息
• 當(dāng)吃藥時(shí)間到后手機(jī)端震動(dòng)提醒
• 并且進(jìn)行語音播報(bào)：“吃藥時(shí)間到了，請(qǐng)及時(shí)吃藥”
• 手機(jī)端點(diǎn)擊“已吃藥”停止震動(dòng)和播報(bào)
• ?整個(gè)電路以5v供電;

?電路圖

PCB

源代碼

#include <reg52.h>
#include <intrins.h>
#include <stdio.h>//printf串口輸出頭文件

#define uchar unsigned char
#define ushort  unsigned int
#define uint  unsigned long

#include "lcd1602.h"
#include "uart_trx.h"
#include "eeprom52.h"

#define RATIO 800		//系數(shù)，建議選擇800-1000

sbit key1 = P1^0;//加鍵
sbit key2 = P1^1;//減鍵

sbit beep = P2^0;//蜂鳴器
sbit Fan = P1^3;//風(fēng)扇

unsigned char pmBuf[7] = 0;//數(shù)據(jù)接收數(shù)組
uint PM25_Value = 0;     		//PM = ((pmBuf[1]<<8)+pmBuf[2])/1024*8*ratio
uint PM25_ValueMax = 200; //上限初始值

void EEPROM_WRITE()//EEPROM寫入
{
		SectorErase(0x2000);//擦除扇區(qū)
	  byte_write(0x2001, (PM25_ValueMax>>8)&0xFF);//存儲(chǔ)高8位
	  byte_write(0x2002, (PM25_ValueMax>>0)&0xFF);//存儲(chǔ)低8位
	  byte_write(0x2009, 111);//存儲(chǔ)校驗(yàn)值
}

void EEPROM_READ()//EEPROM讀出
{
		if(byte_read(0x2009)!=111)//開機(jī)檢測單片機(jī)是不是第一次使用，如果不是第一次使用，則先把數(shù)據(jù)存儲(chǔ)一遍，再讀取，數(shù)據(jù)就不會(huì)亂碼
		{
				EEPROM_WRITE();//存儲(chǔ)
			  delay_ms(100);
		}
		PM25_ValueMax = byte_read(0x2001)<<8 | byte_read(0x2002);//讀取上限值
}

void Get_PM(void)//讀取PM2.5值，具體的數(shù)據(jù)幀意思，請(qǐng)自行查閱芯片手冊(cè)
{
    char i = 0;
    char j = 0;
    char k = 0;

	  COM.RX_Cnt = 0;
    if(COM.B_RX_OK == 1)//串口數(shù)據(jù)接收完成
    {
        for(i = 0; i<8; i++)
        {
            if((RX_Buffer[i] == 0xAA)&&(RX_Buffer[i+6]==0xFF))//判斷接收的數(shù)據(jù)是否正確
            {
                goto find2;
            }
        }
        goto end2;
find2:
        for(j = 0; j<7; j++)
        {
            pmBuf[j] = RX_Buffer[i+j];//數(shù)據(jù)獲取
        }

        PM25_Value = (unsigned int)((pmBuf[1]*256)+pmBuf[2])*5/2048.0*RATIO;//計(jì)算PM2.5值
        COM.B_RX_OK = 0;
    }
end2:
    return;
}



void main(void)
{
    unsigned int test;

	  EEPROM_READ();//開機(jī)讀取存儲(chǔ)值
    LCD_init();//1602初始化
    Uart_Init(2400);//串口初始化波特率2400
  
    LCD_write_string(0,0,"Pm2.5:    ug/m3 ");
    LCD_write_string(0,1,"PmMax:    ug/m3 ");
	  //顯示上限值
	  LCD_write_char(7, 1, PM25_ValueMax % 1000 / 100 + 0x30);
		LCD_write_char(8, 1, PM25_ValueMax % 100 / 10 + 0x30);
		LCD_write_char(9, 1, PM25_ValueMax % 10 + 0x30);
    while(1)
    {
			if (test ++ > 250)//大約250ms讀取一次
			{
					test = 0 ;

					Get_PM();//獲取PM2.5
					if(PM25_Value > 999)//限值，最大999
					 PM25_Value = 999;
					//顯示PM2.5
					LCD_write_char(7, 0, PM25_Value % 1000 / 100 + 0x30);
					LCD_write_char(8, 0, PM25_Value % 100 / 10 + 0x30);
					LCD_write_char(9, 0, PM25_Value % 10 + 0x30);
					
					if(PM25_Value >= PM25_ValueMax)//超過上限，蜂鳴器報(bào)警
					{
							beep = ~beep;
						  Fan = 0;
						  delay_ms(100);
					}
					else
					{
							beep = 1;
						  Fan = 1;
					}
			}
			if(key1 == 0)//加鍵按下
			{
					delay_ms(10);//消抖
				  if(key1 == 0)
					{
						  beep = 0;
						  delay_ms(100);
						  beep = 1;
							while(key1 == 0);
						  if(PM25_ValueMax<999)PM25_ValueMax+=10;//上限最大到999，每次加10
						  //顯示
						  LCD_write_char(7, 1, PM25_ValueMax % 1000 / 100 + 0x30);
							LCD_write_char(8, 1, PM25_ValueMax % 100 / 10 + 0x30);
							LCD_write_char(9, 1, PM25_ValueMax % 10 + 0x30);
						  EEPROM_WRITE();//保存
					}
			}
			if(key2 == 0)//減鍵按下
			{
					delay_ms(10);
				  if(key2 == 0)
					{
						  beep = 0;
						  delay_ms(100);
						  beep = 1;
							while(key2 == 0);
						  if(PM25_ValueMax>=10)PM25_ValueMax-=10;//上限最小到0，每減10
						  //顯示
						  LCD_write_char(7, 1, PM25_ValueMax % 1000 / 100 + 0x30);
							LCD_write_char(8, 1, PM25_ValueMax % 100 / 10 + 0x30);
							LCD_write_char(9, 1, PM25_ValueMax % 10 + 0x30);
						  EEPROM_WRITE();//保存
					}
			}
			delay_ms(1);
    }
}

? ? ?

元器件清單

參考文獻(xiàn)

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