電路原理圖如下:
1.PNG (109.92 KB, 下載次數: 52)
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2021-4-29 20:53 上傳
元件清單
1、萬用板
2、單片機
3、Lcd1602液晶屏
4、16p排針
5、16p排針母座
6、LM358芯片
7、40腳IC座
8、8腳IC座
9、ST188反射光電開關
10、防水型DS18B20
11、200歐電位器
12、220歐電阻*2
13、1k電阻*5
14、2k電阻
15、10k電阻*6
16、20k電阻
17、100k電阻
18、1uf電容*2
19、10uf電容*2
20、12m晶振
21、30pf電容*2
22、紅色led燈*3
23、綠色led燈
24、黃色led燈
25、8550三極管
26、蜂鳴器
27、按鍵*4
28、自鎖開關
29、DC3.5mm電源座
30、焊錫若干
31、導線若干
32、usb電源線
單片機源程序如下:
- #include<reg52.h>
- #include <intrins.h>
- #include <string.h>
- #include "lcd1602.h"
- #include "ds18b20.h"
- #include "eeprom.h"
- #define uchar unsigned char
- #define uint unsigned int
- sbit rled = P1^0;
- sbit gled = P1^1;
- sbit trled = P1^2;
- sbit yled = P1^3;
- sbit beep = P1^4;
- sbit key1 = P1^5;
- sbit key2 = P1^6;
- sbit key3 = P1^7;
- sbit P32=P3^2;
- unsigned char i=0,timecount=0,displayOK=0,rate=0,aa=0;
- unsigned int time[6]={0};
- uint temp;
- uchar flag;
- uchar xl_h,xl_l,temp_h,temp_l;
- uint alt;
- bit S_flag;
- void delay(uint j)
- {
- uint x,y;
- for(x=0;x<j;x++)
- for(y=0;y<110;y++);
- }
- /******************把數據保存到單片機內部eeprom中******************/
- void write_eeprom()
- {
- SectorErase(0x2000);
- byte_write(0x2000, xl_h);
- byte_write(0x2001, xl_l);
- byte_write(0x2002, temp_h);
- byte_write(0x2003, temp_l);
- byte_write(0x2058, a_a);
- }
- /******************把數據從單片機內部eeprom中讀出來*****************/
- void read_eeprom()
- {
- xl_h = byte_read(0x2000);
- xl_l = byte_read(0x2001);
- temp_h = byte_read(0x2002);
- temp_l = byte_read(0x2003);
- a_a = byte_read(0x2058);
- }
- /**************開機自檢eeprom初始化*****************/
- void init_eeprom()
- {
- read_eeprom(); //先讀
- if(a_a != 1||key2==0) //新的單片機初始單片機內問eeprom
- {
- xl_h = 90;
- xl_l = 50;
- temp_h =37;
- temp_l =15;
- a_a = 1;
- write_eeprom(); //保存數據
- }
- }
-
- void display()
- {
- if(flag==0)
- {
- lcd1602_write(0,0x80);
- lcd1602_writebyte(" Temp:");
- lcd1602_write(1,0x30 + temp/100);
- lcd1602_write(1,0x30 + temp%100/10);
- lcd1602_write(1,'.');
- lcd1602_write(1,0x30 + temp%10);
- lcd1602_write(1,0xdf);
- lcd1602_writebyte("C ");
-
- lcd1602_write(0,0xc0);
- lcd1602_writebyte("Heart:");
- if(displayOK==1)
- {
- rate=60000/(time[1]/5+time[2]/5+time[3]/5+time[4]/5+time[5]/5);
- lcd1602_write(1,0x30 + rate/100);
- lcd1602_write(1,0x30 + rate%100/10);
- lcd1602_write(1,0x30 + rate%10);
- }
- else
- {
- lcd1602_writebyte("---");
- }
- lcd1602_writebyte("/min ");
- }
- else
- {
- lcd1602_write(0,0x80);
- lcd1602_writebyte(" XH:");
- if(S_flag==1&&flag==1)
- lcd1602_writebyte(" ");
- else
- {
- lcd1602_write(1,0x30 + xl_h/100);
- lcd1602_write(1,0x30 + xl_h%100/10);
- lcd1602_write(1,0x30 + xl_h%10);
- }
-
- lcd1602_writebyte(" XL:");
- if(S_flag==1&&flag==2)
- lcd1602_writebyte(" ");
- else
- {
- lcd1602_write(1,0x30 + xl_l/100);
- lcd1602_write(1,0x30 + xl_l%100/10);
- lcd1602_write(1,0x30 + xl_l%10);
- }
-
-
-
- lcd1602_write(0,0xc0);
- lcd1602_writebyte(" TH:");
- if(S_flag==1&&flag==3)
- lcd1602_writebyte(" ");
- else
- {
-
- lcd1602_write(1,0x30 + temp_h/10);
- lcd1602_write(1,0x30 + temp_h%10);
- }
- lcd1602_writebyte("C ");
-
- lcd1602_writebyte(" TL:");
- if(S_flag==1&&flag==4)
- lcd1602_writebyte(" ");
- else
- {
- lcd1602_write(1,0x30 + temp_l/10);
- lcd1602_write(1,0x30 + temp_l%10);
- }
- lcd1602_writebyte("C ");
-
-
-
-
- }
- }
- void keyrc()
- {
- if(key1==0)
- {
- delay(10);
- if(key1==0)
- {
- flag++;
- if(flag>4) flag=0;
- }
- while(!key1);
- }
-
- if(key2==0)
- {
- delay(10);
- if(key2==0)
- {
- switch(flag)
- {
- case 1: if(xl_h<160) xl_h++; break;
- case 2: if(xl_h>xl_l+1) xl_l++; break;
- case 3: if(temp_h<99) temp_h++; break;
- case 4: if(temp_h>temp_l+1) temp_l++; break;
- }
- write_eeprom();
- }
- while(!key2);
- }
-
- if(key3==0)
- {
- delay(10);
- if(key3==0)
- {
- switch(flag)
- {
- case 1: if(xl_h>xl_l+1) xl_h--; break;
- case 2: if(xl_l>0) xl_l--; break;
- case 3: if(temp_h>temp_l+1) temp_h--; break;
- case 4: if(temp_l>0) temp_l--; break;
- }
- write_eeprom();
- }
- while(!key3);
- }
- }
- void clsp()
- {
- alt++;
- if(alt>15)
- {
- alt=0;
- if(displayOK==1)
- {
- if(rate>xl_h) {rled=~rled;gled=1;}
- else if(rate<xl_l) {rled=1;gled=~gled;}
- else {rled=1;gled=1;}
- }
- else {rled=1;gled=1;}
-
- if(temp>temp_h*10) {trled=~trled;yled=1;}
- else if(temp<temp_l*10) {trled=1;yled=~yled;}
- else {trled=1;yled=1;}
-
- if(((rate>xl_h || rate<xl_l) && displayOK==1) || temp>temp_h*10 || temp<temp_l*10)
- beep=~beep;
- else
- beep=1;
- S_flag=~S_flag;
- }
- }
- void main()
- {
- P32=1;
- lcd_init();//lcd初始化
- init_eeprom();
- TCON=0x01;//設置外部中斷0
- EX0=1;
-
- TMOD=0x01;//定時器0初始化
- TL0 = 0xB0; //設置定時初值
- TH0 = 0x3C; //設置定時初值
- ET0=1;//開定時器中斷
- //顯示基本文字
-
- temp=ReadTemperature();
-
- GoToXY_string(0,0," Welcome to use ");
- GoToXY_string(1,0," Heart rate ");
- TR0=0;//定時器停止
- EA=1;//開總中斷
- delay(2000);
- temp=ReadTemperature();
- while(1)
- {
- temp=ReadTemperature();
- display();
- keyrc();
- clsp();
- }
- }
- ……………………
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2021-4-29 20:55 上傳
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