232【Complete course design】Heart rate, body temperature and weight detection system design based on 51 single chip microcomputer

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https://docs.qq.com/doc/DTlRSd01BZXNpRUxl

51 Heart Rate, Body Temperature and Weight Detection System Design-LCD1602-Heart Rate-DS18B20-HX711

This design is composed of STC89C52 single-chip circuit + LCD1602 liquid crystal display circuit + pulse/heart rate sensor circuit + LM393 comparator module circuit + DS18B20 temperature sensor circuit + HX711 weighing detection circuit + power supply circuit.

1. Detect pulse/heart rate through pulse/heart rate sensor.

2. Detect body temperature through temperature sensor DS18B20.

3. Detect body weight through load cell.

3. Real-time display of pulse/heart rate, body temperature and weight (0-100KG) on the LCD.

unsigned char i_i=0,timecount=0,displayOK=0,rate=0,aa=0;//定义变量
unsigned int time[6]={0};

unsigned long time_50ms=0;	//定时器变量
unsigned char sys_times=0;

char dis0[16];			   //打印数组初始化
char dis1[16];			   //打印数组初始化

xdata long Weight_mp=0;			//毛重
xdata long Weight_Shiwu=0;		  //实物重量
xdata unsigned long Weight_Maopi=0;	 //读取初始化值

void time_init(void);	//函数声明
void init_int0(void);
void main()
{	
	int temp;
	float temperature;

	time_init();                    //初始化定时器 
	init_int0();	  //外部中断0初始化程序

	LCD_Init();           //初始化液晶
	DelayMs(20);          //延时有助于稳