温度报警工程文件免费下载

#include "public.h" #include "lcd.h" #include "temp.h" #include "i2c.h" sbit k3=P3^2; //设置温度上下限 sbit k1=P3^4; //加 sbit k2=P3^5; //减 sbit ledL=P1^0; sbit ledH=P1^1; sbit led=P2^4; //电源指示灯 sbit beep=P1^5; //蜂鸣器报警 sbit relay=P1^4; //加热或散热设备 char set_templ=22,set_temph=40; //设定温度上下限默认值 u16 temp_val; //检测的实际温度 u8 mode; //温度模式 void Temp_DataPros() { short temp; u8 temp_buf[5]; temp=Ds18b20ReadTemp(); temp_val=temp; if(temp<0) { temp=-temp; LCD_Dispstring(2+5,0,"-"); } else { LCD_Dispstring(2+5,0," "); } temp_buf[0]=temp/100+0x30; temp_buf[1]=temp%100/10+0x30; temp_buf[2]='.'; temp_buf[3]=temp%100%10+0x30; temp_buf[4]='\0'; LCD_Dispstring(2+6,0,temp_buf); //显示检测的温度xx.x temp_buf[0]=set_temph/10+0x30; temp_buf[1]=set_temph%10+0x30; temp_buf[2]='\0'; LCD_Dispstring(5,1,temp_buf); //显示设定的温度上限值xx temp_buf[0]=set_templ/10+0x30; temp_buf[1]=set_templ%10+0x30; temp_buf[2]='\0'; LCD_Dispstring(14,1,temp_buf); //显示设定的温度下限值xx } #define K1_MODE 1 #define K2_ADD 2 #define K3_DEC 3 //mode: 0-单次扫描 1-连续扫描 u8 KEY_Scan(u8 mode) { static u8 key=1; if(key&&(k1==0||k2==0||k3==0)) { delay(1000); //消抖 key=0; if(k3==0) { return K1_MODE; } else if(k1==0) { return K2_ADD; } else if(k2==0) { return K3_DEC; } } else if(k1==1&&k2==1&&k3==1) { key=1; } if(mode) { key=1; } return 0; } void KEY_Pros() { u8 key; u8 temph_buf[3]; key=KEY_Scan(0); if(key==K1_MODE) //模式选择 { mode++; LCD_Clear(); if(mode==1) { LCD_Dispstring(0,0,"SETH: C"); } else if(mode==2) { LCD_Dispstring(0,1,"SETL: C"); } else { mode=0; LCD_Dispstring(2,0,"Temp: C"); LCD_Dispstring(0,1,"SETH: "); LCD_Dispstring(9,1,"SETL: "); } } if(mode==1) //温度上限设置 { switch(key) { case K2_ADD: //加 set_temph++; if(set_temph>=80)set_temph=80; break; case K3_DEC: //减 set_temph--; if(set_temph<=0)set_temph=0; break; } temph_buf[0]=set_temph/10+0x30; temph_buf[1]=set_temph%10+0x30; temph_buf[2]='\0'; LCD_Dispstring(6,0,temph_buf); At24c02Write(0,set_temph); } else if(mode==2) //温度下限设置 { switch(key) { case K2_ADD: //加 set_templ++; if(set_templ>=80)set_templ=80; break; case K3_DEC: //减 set_templ--; if(set_templ<=0)set_templ=0; break; } temph_buf[0]=set_templ/10+0x30; temph_buf[1]=set_templ%10+0x30; temph_buf[2]='\0'; LCD_Dispstring(6,1,temph_buf); At24c02Write(2,set_templ); } } void sound() { u8 i=50; while(i--) { beep=!beep; delay(10); } } void TempData_Compare() { if(temp_val>set_temph*10) //实际温度高于上限值 报警 { relay=0; ledH=0; ledL=1; sound(); } else if(temp_val<set_templ*10) //实际温度低于下限值 报警 { relay=0; ledH=1; ledL=0; sound(); } else //实际温度在下限值和上限值之间 取消报警 取消加热 取消散热 { ledH=1; ledL=1; relay=1; } } void kai_display() { if(At24c02Read(255)!=18) { At24c02Write(0,set_temph); At24c02Write(2,set_templ); At24c02Write(255,18); } else { set_temph=At24c02Read(0); set_templ=At24c02Read(2); } LCD_Dispstring(2,0,"Temp: C"); LCD_Dispstring(0,1,"SETH: "); LCD_Dispstring(9,1,"SETL: "); } void main() { ledH=1; ledL=1; relay=1; led=0; LCD_Init(); kai_display(); while(1) { if(mode==0) Temp_DataPros(); KEY_Pros(); TempData_Compare(); } }