标题: 基于51单片机的心率计程序设计 [打印本页]
作者: 很不回复 时间: 2019-6-10 21:14
标题: 基于51单片机的心率计程序设计
一.原理图
二.程序
#include <reg52.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long
#define LCD_DATA P0
sbit LCD_RS =P2^5;
sbit LCD_RW =P2^6;
sbit LCD_E =P2^7;
sbit Xintiao =P1^0 ;
sbit speaker =P2^4;
void delay5ms(void); //误差 0us
void LCD_WriteData(uchar LCD_1602_DATA); /********LCD1602数据写入***********/
void LCD_WriteCom(uchar LCD_1602_COM); /********LCD1602命令写入***********/
void lcd_1602_word(uchar Adress_Com,uchar Num_Adat,uchar *Adress_Data); /*1602字符显示函数，变量依次为字符显示首地址，显示字符长度，所显示的字符*/
void InitLcd();
void Tim_Init();
uchar Xintiao_Change=0;
uint Xintiao_Jishu;
uchar stop;
uchar View_Data[3];
uchar View_L[3];
uchar View_H[3];
uchar Xintiao_H=100;
uchar Xintiao_L=40;
uchar Key_Change;
uchar Key_Value;
uchar View_Con;
uchar View_Change;
void main()
{
InitLcd();
Tim_Init();
lcd_1602_word(0x80,16,"Heart Rate: ");
TR0=1;
TR1=1;
while(1)
{
if(Key_Change)
{
Key_Change=0;
View_Change=1;
switch(Key_Value)
{
case 1:
{
View_Con++;
if(View_Con==3)
View_Con=0;
break;
}
case 2:
{
if(View_Con==2)
{
if(Xintiao_H<150)
Xintiao_H++;
}
if(View_Con==1)
{
if(Xintiao_L<Xintiao_H-1)
Xintiao_L++;
}
break;
}
case 3:
{
if(View_Con==2)
{
if(Xintiao_H>Xintiao_L+1)
Xintiao_H--;
}
if(View_Con==1)
{
if(Xintiao_L>30)
Xintiao_L--;
}
break;
}
}
}
if(View_Change)
{
View_Change=0;
if(stop==0)
{
if(View_Data[0]==0x30)
View_Data[0]=' ';
}
else
{
View_Data[0]=' ';
View_Data[1]=' ';
View_Data[2]=' ';
}
switch(View_Con)
{
case 0:
{
lcd_1602_word(0x80,16,"Heart Rate: ");
lcd_1602_word(0xc0,16," ");
lcd_1602_word(0xcd,3,View_Data);
break;
}
case 1:
{
lcd_1602_word(0x80,16,"Heart Rate: ");
lcd_1602_word(0x8d,3,View_Data);
View_L[0]=Xintiao_L/100+0x30;
View_L[1]=Xintiao_L%100/10+0x30;
View_L[2]=Xintiao_L%10+0x30;
if(View_L[0]==0x30)
View_L[0]=' ';
lcd_1602_word(0xC0,16,"Warning L : ");
lcd_1602_word(0xCd,3,View_L);
break;
}
case 2:
{
lcd_1602_word(0x80,16,"Heart Rate: ");
lcd_1602_word(0x8d,3,View_Data);
View_H[0]=Xintiao_H/100+0x30;
View_H[1]=Xintiao_H%100/10+0x30;
View_H[2]=Xintiao_H%10+0x30;
if(View_H[0]==0x30)
View_H[0]=' ';
lcd_1602_word(0xC0,16,"Warning H : ");
lcd_1602_word(0xCd,3,View_H);
break;
}
}
}
}
}
void Time1() interrupt 3
{
static uchar Key_Con,Xintiao_Con;
TH1=0xd8; //10ms
TL1=0xf0;
switch(Key_Con)
{
case 0:
{
if((P3&0x07)!=0x07)
{
Key_Con++;
}
break;
}
case 1:
{
if((P3&0x07)!=0x07)
{
Key_Con++;
switch(P3&0x07)
{
case 0x06:Key_Value=1;break;
case 0x05:Key_Value=2;break;
case 0x03:Key_Value=3;break;
}
}
else
{
Key_Con=0;
}
break;
}
case 2:
{
if((P3&0x07)==0x07)
{
Key_Change=1;
Key_Con=0;
}
break;
}
}
switch (Xintiao_Con)
{
case 0:
{
if(!Xintiao)
{
Xintiao_Con++;
}
break;
}
case 1:
{
if(!Xintiao)
{
Xintiao_Con++;
}
else
{
Xintiao_Con=0;
}
break;
}
case 2:
{
if(!Xintiao)
{
Xintiao_Con++;
}
else
{
Xintiao_Con=0;
}
break;
}
case 3:
{
if(!Xintiao)
{
Xintiao_Con++;
}
else
{
Xintiao_Con=0;
}
break;
}
case 4:
{
if(Xintiao)
{
if(Xintiao_Change==1)
{
View_Data[0]=(60000/Xintiao_Jishu)/100+0x30;
View_Data[1]=(60000/Xintiao_Jishu)%100/10+0x30;
View_Data[2]=(60000/Xintiao_Jishu)%10+0x30;
if(((60000/Xintiao_Jishu)>=Xintiao_H)||((60000/Xintiao_Jishu)<=Xintiao_L))
speaker=0;
else
speaker=1;
View_Change=1;
Xintiao_Jishu=0;
Xintiao_Change=0;
stop=0;
}
else
{
Xintiao_Jishu=0;
Xintiao_Change=1;
}
Xintiao_Con=0;
break;
}
}
}
}
void Time0() interrupt 1
{
TH0=0xfc; //1ms
TL0=0x18;
Xintiao_Jishu++;
if(Xintiao_Jishu==5000)
{
Xintiao_Jishu=0;
View_Change=1;
Xintiao_Change=0;
stop=1;
speaker=1;
}
}
void Tim_Init()
{
EA=1;
ET0=1;
ET1=1;
TMOD=0x11;
TH0=0xfc; //1ms
TL0=0x18;
TH1=0xd8; //10ms
TL1=0xf0;
}
void lcd_1602_word(uchar Adress_Com,uchar Num_Adat,uchar *Adress_Data)
{
uchar a=0;
uchar Data_Word;
LCD_WriteCom(Adress_Com);
for(a=0;a<Num_Adat;a++)
{
Data_Word=*Adress_Data;
LCD_WriteData(Data_Word);
Adress_Data++;
}
}
/***************1602函数*******************/
void LCD_WriteData(uchar LCD_1602_DATA) /********LCD1602数据写入***********/
{
delay5ms(); //操作前短暂延时，保证信号稳定
LCD_E=0;
LCD_RS=1;
LCD_RW=0;
_nop_();
LCD_E=1;
LCD_DATA=LCD_1602_DATA;
LCD_E=0;
LCD_RS=0;
}
/********LCD1602命令写入***********/
void LCD_WriteCom(uchar LCD_1602_COM)
{
delay5ms();//操作前短暂延时，保证信号稳定
LCD_E=0;
LCD_RS=0;
LCD_RW=0;
_nop_();
LCD_E=1;
LCD_DATA=LCD_1602_COM;
LCD_E=0;
LCD_RS=0;
}
void InitLcd()
{
delay5ms();
delay5ms();
LCD_WriteCom(0x38); //display mode
LCD_WriteCom(0x38); //display mode
LCD_WriteCom(0x38); //display mode
LCD_WriteCom(0x06); //显示光标移动位置
LCD_WriteCom(0x0c); //显示开及光标设置
LCD_WriteCom(0x01); //显示清屏
delay5ms();
delay5ms();
}
void delay5ms(void) //误差 0us
{
unsigned char a,b;
for(b=185;b>0;b--)
for(a=12;a>0;a--);
}
有什么问题私聊我。
作者: brewster 时间: 2019-6-11 19:46
那个心率是怎么采集的?
作者: 123AFWEFG 时间: 2020-11-29 15:28
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit rs=P1^0; //数据与命令选择控制引脚
sbit rw=P1^1; //读与写选择控制引脚
sbit en=P1^2; //使能择控制引脚
sbit bf=P0^7; //忙标志位
sbit P32=P3^2;
unsigned char i=0,timecount=0,displayOK=0,rate=0,aa=0;
unsigned int time[6]={0};
/************ 延时函数 *****************/
void delay(uint z)
{
while(z--);
}
/************ 忙检测函数 *****************/
void jiance()
{
P0=0xff;
rs=0;rw=1;en=1;
while(bf); //如果BF==1表示液晶在忙
en=0;
}
/************ 写命令函数 *****************/
void write_com(uchar com)
{
jiance();
P0=com;
rs=0;rw=0;en=1;
delay(2);
en=0;
}
/************ 写数据函数 *****************/
void write_dat(uchar dat)
{
jiance();
P0=dat;
rs=1;rw=0;en=1;
delay(2);
en=0;
}
/************ 1602液晶初始化函数 *****************/
void init_lcd()
{
write_com(0x38); // 设置16*2显示，5*7点阵，8位数据接口
write_com(0x0c); // 开显示，不显示光标
write_com(0x06); // 地址加1，当写入数据的时候光标右移
write_com(0x01); //清屏
}
/******************************************************************/
/* 在指定位置写字符 */
/******************************************************************/
void LCD_write_char(unsigned char x,unsigned char y,unsigned char Data)
{
if (y == 0)
write_com(0x80 + x);
else
write_com(0xC0 + x);
write_dat(Data);
}
void DelayMs(unsigned int z)
{
unsigned int x;
for(;z>0;z--)
for(x=110;x>0;x--);
}
void main()
{
P32=1;
init_lcd();//lcd初始化
TCON=0x01;//设置外部中断0
EX0=1;
TMOD=0x01;//定时器0初始化
TH0=(65536-50000)/256;//实测每50ms中断的定时值
TL0=(65536-50000)%256;
ET0=1;//开定时器中断
//显示基本文字
LCD_write_char(3,0,'H');
LCD_write_char(4,0,'e');
LCD_write_char(5,0,'a');
LCD_write_char(6,0,'r');
LCD_write_char(7,0,'t');
LCD_write_char(8,0,' ');
LCD_write_char(9,0,'R');
LCD_write_char(10,0,'a');
LCD_write_char(11,0,'t');
LCD_write_char(12,0,'e');
LCD_write_char(8,1,'/');
LCD_write_char(9,1,'m');
LCD_write_char(10,1,'i');
LCD_write_char(11,1,'n');
TR0=0;//定时器停止
EA=1;//开总中断
while(1)
{
if(displayOK==1)
{
rate=60000/(time[1]/5+time[2]/5+time[3]/5+time[4]/5+time[5]/5);
LCD_write_char(5,1,rate/100+48);
LCD_write_char(6,1,(rate%100)/10+48);
LCD_write_char(7,1,rate%10+48);
}
DelayMs(300);
}
}
void ex0() interrupt 0
{
EX0=0;//暂时关外部中断
if(timecount<8) //当连续两次检测时间间隔小于8*50ms=400ms不处理
{
TR0=1;//开定时器
}
else
{
time[i]=timecount*50+TH0*0.256+TL0/1000;//算出间隔时间
TL0=(65536-50000)%256;//重新设置定时器
TH0=(65536-50000)/256;
timecount=0;//50ms计数清零
i++;
if(i==6)//记录到超过等于6次时间
{
i=1;//计数从1开始
displayOK=1; //测得5次开始显示
}
}
EX0=1;
}
void et0() interrupt 1
{
TL0=(65536-50000)%256;
TH0=(65536-50000)/256;
timecount++;//每50ms一次计数
if(timecount>25) //当超过25*50ms=1.25s没有检测到信号停止显示
{
i=0;//数据个数清零
timecount=0;//50ms计数清零
displayOK=0;//显示关
TR0=0;//定时器关
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
}
}
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