如何实现51单片机与DS18B20温度传感器配合在适当温度时蜂鸣器报警 -

标题: 如何实现51单片机与DS18B20温度传感器配合在适当温度时蜂鸣器报警 [打印本页]

作者: 1411981802 时间: 2016-4-2 14:09
标题: 如何实现51单片机与DS18B20温度传感器配合在适当温度时蜂鸣器报警
希望大神能够有给个具体方法，还有相应程序，谢谢

作者: 腾飞的龙 时间: 2016-4-2 20:02
读出温度，设定在多少度报警就在多少度报警

作者: 1411981802 时间: 2016-4-4 13:03

腾飞的龙发表于 2016-4-2 20:02
读出温度，设定在多少度报警就在多少度报警

这个我知道，但是要怎么写到程序里是个问题，要是能有个具体程序就好了，新手，写程序很有困难，望指导

作者: jiajuntao 时间: 2016-4-4 15:54
网上百度，程序比较多，多读多修改，最好，自己慢慢写，就会有体会了。

作者: 腾飞的龙 时间: 2016-4-4 18:28
论坛里51单片机控制DS18B20的程序很多啊，你怎么不看论坛吗？

作者: 腾飞的龙 时间: 2016-4-4 18:29
51单片机数码管显示DS18B20温度测量报警控制板，这不就是现成的嘛

作者: 走天涯 时间: 2016-4-4 21:25
分模块进行，网上有代码和原理图

作者: 11323 时间: 2016-4-5 08:58
自己根据源程序修改的代码，实现了在高于设定温度时滴滴的蜂鸣器报警
// File name :**.c
//
// Descriptions :实时采集当前环境温度值，并显示于数码管上。
// 同时，当温度高于某一值时（此处设为31摄氏度），蜂鸣器便会发出报警。
// 而当低于该值时，蜂鸣器自动停止报警。
// 试验时，可用手触摸DS18B20，使其温度升高到31度，观察现象。
//
//**************************************************************************************

//**************************************************************************************
//Revision History
//------------------
//
//01 ****-**-** 10:07  Park
//    Create the file.
//**************************************************************************************

#include
#define uchar unsigned char
#define uint unsigned int
sbit DS=P2^2;          //define interface
uint temp;          // variable of temperature
uint tempBaoJing;
uchar flag1;          // sign of the result positive or negative
sbit dula=P2^6;
sbit wela=P2^7;
//sbit beep=P3^7;
unsigned char code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,
                     0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned char code table1[]={0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,
                     0x87,0xff,0xef};

void delay(uint count)    //delay
{
  uint i;
  while(count)
  {
i=200;
while(i>0)
i--;
count--;
  }
}
void dsreset(void)    //send reset and initialization command
{
  uint i;
  DS=0;
  i=103;
  while(i>0)i--;
  DS=1;
  i=4;
  while(i>0)i--;
}

bit tmpreadbit(void)    //read a bit
{
uint i;
bit dat;
DS=0;i++;       //i++ for delay
DS=1;i++;i++;
dat=DS;
i=8;while(i>0)i--;
return (dat);
}

uchar tmpread(void) //read a byte date
{
  uchar i,j,dat;
  dat=0;
  for(i=1;i<=8;i++)
  {
j=tmpreadbit();
dat=(j<<7)|(dat>>1); //读出的数据最低位在最前面，这样刚好一个字节在DAT里
  }
  return(dat);
}

void tmpwritebyte(uchar dat) //write a byte to ds18b20
{
  uint i;
  uchar j;
  bit testb;
  for(j=1;j<=8;j++)
  {
testb=dat&0x01;
dat=dat>>1;
if(testb)    //write 1
{
   DS=0;
   i++;i++;
   DS=1;
   i=8;while(i>0)i--;
}
else
{
   DS=0;    //write 0
   i=8;while(i>0)i--;
   DS=1;
   i++;i++;
}

  }
}

void tmpchange(void)  //DS18B20 begin change
{
  dsreset();
  delay(1);
  tmpwritebyte(0xcc);  // address all drivers on bus
  tmpwritebyte(0x44);  //  initiates a single temperature conversion
}

uint tmp()             //get the temperature
{
  float tt;
  uchar a,b;
  dsreset();
  delay(1);
  tmpwritebyte(0xcc);
  tmpwritebyte(0xbe);
  a=tmpread();
  b=tmpread();
  temp=b;
  temp<<=8;          //two byte  compose a int variable
  temp=temp|a;
  tt=temp*0.0625;
  temp=tt*10+0.5;
  return temp;
}

void displayBaoJing(uint temp) //显示程序
{
uchar A1,A2,A2t;
A1=temp/100;
A2t=temp0;
A2=A2t/10;

dula=0;
P0=table[A1];  //显示百位
dula=1;
dula=0;

wela=0;
P0=numPos[4];
wela=1;
wela=0;
delay(1);

dula=0;
P0=table1[A2];  //显示十位
dula=1;
dula=0;

wela=0;
P0=numPos[5];
wela=1;
wela=0;
delay(1);

}

void display(uint temp) //显示程序
{
uchar A1,A2,A2t,A3;
A1=temp/100;
A2t=temp0;
A2=A2t/10;
A3=A2t;
dula=0;
P0=table[A1];  //显示百位
dula=1;
dula=0;

wela=0;
P0=0x7e;
wela=1;
wela=0;
delay(1);

dula=0;
P0=table1[A2];  //显示十位
dula=1;
dula=0;

wela=0;
P0=0x7d;
wela=1;
wela=0;
delay(1);

P0=table[A3];  //显示个位
dula=1;
dula=0;

P0=0x7b;
wela=1;
wela=0;
delay(1);
}

void InitTimer0(void)
{
TMOD = 0x01;
TH0 = 0x0DC;
TL0 = 0x00;
EA = 1;
ET0 = 1;
TR0 = 0;
}

void main()
{
uchar a;
InitTimer0();

tempBaoJing=250;//250为报警温度乘以10之后得到的数值
do
{
tmpchange();//先调用tmpchange,此函数发送44H，启动温度转换，然后再调用tmp()读取温度值
for(a=10;a>0;a--)
{
display(tmp());
  displayBaoJing(tempBaoJing);
}

if (buttonS1==BUTTON_DOWN)
{
  delayMsWYL(10);
  if (buttonS1==BUTTON_DOWN)
  {
tempBaoJing=tempBaoJing+10;
  }
}

if (buttonS2==BUTTON_DOWN)
{
  delayMsWYL(10);
  if (buttonS2==BUTTON_DOWN)
  {
tempBaoJing=450;
  }
}

if (buttonS3==BUTTON_DOWN)
{
  delayMsWYL(10);
  if (buttonS3==BUTTON_DOWN)
  {
tempBaoJing=350;
  }
}

if(temp>=tempBaoJing)  //当温度超过31度（仅作试验用，实际可设为其他更高的值），蜂鸣器便会报警。
  {
// P1=0xf1;
// beep=BEEP_ON;
  TR0=1;
  }
  else
  {
// beep=BEEP_OFF;
// P1=0x00;
TR0=0;
  }


  } while(1);
}

void Timer0(void) interrupt 1
{
static int temp=0;
TH0 = 0x0DC;
TL0 = 0x00;
//add your code here!
temp++;
if (temp>250&&temp<300)
{
  //temp=0;
  beep=BEEP_ON;
}
else if (temp>300)
{
  beep=BEEP_OFF;
  temp=0;
}

}

作者: 18437907736 时间: 2018-12-20 07:39
#include <reg51.h>
#define unit unsigned int
#define uchar unsigned char
sbit SET=P3^1;
sbit DEC=P3^2;
sbit ADD=P3^3;
sbit BEEP=P3^6;
sbit ALAM=P1^7;
sbit ALAM1=P1^4;
sbit DQ=P3^7;
bit shanshuo_st;
bit beep_st;
sbit DIAN=P0^5;
uchar x=0;
signed char m;
uchar n;
uchar set_st=0;
signed char shangxian=45;
signed char xiaxian=40;
LEDData[]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,0xff};
uchar code
LEDdata[]={0x5F,0x44,0x9D,0xD5,0xC6,0xD3,0xDB,0x47,0xDF,0xD7,0xCF,0xDA,0x9B,0xDC,0x9B,0x8B};
void Delay_DS18B20(int num)
{
while(num--);
}
void Init_DS18B20(void)
{
unsigned char x=0;
DQ=1;
Delay_DS18B20(8);
DQ=0;
Delay_DS18B20(80);
DQ=1;
Delay_DS18B20(14);
x=DQ;
Delay_DS18B20(20);
}
unsigned char Read One Char(void)
{
unsigned char i=0;
unsigned char dat=0;
for(i=8;i>0;i--)
{
DQ=0;
dat>>=1;
DQ=1;
if(DQ)
dat|=0x80;
Delay_DS18B20(4);
}
return(dat);
}
void Write One Char(unsigned char dat)
{
unsigned char i=0;
for(i=8;i>0;i--)
{
DQ=0;
DQ=dat&0x01;
Delay_DS18B20(5);
DQ=1;
dat>>=1;
}}
unsigned int Read Temperature(void)
{
unsigned char a=0;
unsigned char b=0;
unsigned int t=0;
float tt=0;
Init_DS18B20();
Write One Char(0xCC);
Write One Char(0x44);
Init_DS18B20();
Write One Char(0xCC);
Write One Char(0xBE);
a=Read One Char();
b=Read One Char();
t=b;e
t<<=8;
t=t|a;
tt=t*0.0625;
t=tt*10+0.5;
return(t);
}
void Delay(unit num)
{
while(--num);
}
void InitTimer(void)
{TMOD=0x1;
TH0=0x3c;
TL0=0xb0;
}
void cheek_wendu(void)
{
unit a,b,c;
c=Read Temperture()-5;
a=c/100;
b=c/10-a*10;
m=c/10;
n=c-a*100-b*10;
if(m<0){m=0;n=0;}
if(m>99){m=99;n=9;}
}
void Disp_init(void)
{
P0=~0x80;
P2=0x7F;
Delay(200);
P2=0xDF;
Delay(200);
P2=0xF7;
Delay(200);
P2=0xFD;
Delay(200);
P2=0xFF;
}
void Disp_temperture(void)
{
P0=~0x98;
P2=0x7F;
Delay(400);
P2=0xff;
P0=~LEDData[n];
P2=0xDF;
Delay(400);
P2=0xff;
P0=~LEDData[m%10];
DIAN=0;
P2=0xF7;
Delay(400);
P2=0xff;
P0=~LEDData[m/10];
P2=0xFD;
Delay(400);
P2=0xff;
void Disp_alarm(uchar baojing)
{
P0=~0x98;
P2=0x7F;
Delay(200);
P2=0xff;
P0=~LEDData[baojing%10];
P2=0xDF;
Delay(200)
P2=0xff;
P0=~LEDData[baojing/10];
P2=0xF7;
Delay(200);
P2=0xff;
if(set_st==1)P0=~0xCE;
else if(set_st==2)P0=~0x1A;
P2=0xFD;
Delay(200)P2=0xff;
}
void Alarm()
{
if(x>=10){beep_st=~beep_st;x=0;}
if(m>=shangxian)
{
ALAM=0;
ALAM1=1;
if(beep_st==1)
BEEP=0;
else
BEEP=1;
}
else if(m<xiaxian)
{
ALAM1=0;
ALAM=1;
BEEP=1;
}
else
{
BEEP=1;
ALAM=1;
ALAM1=1;
}
}
void main(void)
{
unit z;
Init Timer();
EA=1;
TR0=1;
ET0=1;
IT0=1;
IT1=1;
check_wendu();
check_wendu();
for(z=0;<300;z++);
{
Disp_init();
}
while(1)
{
if(SET==0)
{
Delay(2000);
do{}while(SET==0);
set_st++;x=0;shanshuo_st=1;
if(set_st>2)set_st=0;
}
if(set_st==0)
{
EX0=0;
EX1=0;
check_wendu();
Disp_Temperature();
Alarm();
}
else if(set_st==1)
{
BEEP=1;
ALAM=1;
ALAM1=1;
EX0=1;
EX1=1;
if(x>=10){shanshuo_st=~shanshuo_st;x=0;}
if(shanshuo_st){Disp_alarm(shangxian);}
}
else if(set_st==2)
{
BEEP=1;
ALAM=1;
ALAM1=1;
EX0=1;
EX1=1;
if(x>10){shanshuo_st=~shanshuo_st;x=0;}
if(shanshuo_st{Disp_alarm(xiaxian);}
}
}
}
void timer0(void) interrupt 1
{
TH0=0x3c
TL0=0xb0;
x++;
}
void int0(void) interrupt 0
{
EX0=0;
if(DEC==0&&set_st==1)
{
do
{
Disp_alarm(shangxian);
}
while(DEC==0);
shangxian--;
if(shangxian<=xiaxian)shangxian=xiaxian+1;
}
else if(DEC==0&&set_st==2)
{
do
{
Disp_alarm(xiaxian);
}
while(DEC==0);
xiaxian--;
if(xiaxian<0)xiaxian=0;
}
}
void int1(void) interrupt 2
{
EX1=0;
if(ADD==0&&set_st==1)
{
do
{
Disp_alarm(shangxian);
}
while(ADD==0);
shangxian++;
if(shangxian>99)shangxian=99;
}
else if(ADD==0&&set_st==2)
{
do
{
Disp_alarm(xiaxian);
}
while(ADD==0);
xiaxian++;
if(xiaxian>=shangxian)xiaxian=shangxian-1;
}
}

6Q3L4CNIHT$6)BIG4X2%WPH.png (19.99 KB, 下载次数: 98)

控温报警

作者: 我对你情有独钟 时间: 2019-4-6 08:25
#在这#include <reg52.H> #include <intrins.H> #include <math.H> #define uchar unsigned char #define uint unsigned int sbit dula = P2^6; sbit wela = P2^7; sbit rw = P3^6; sbit RS = P3^5; sbit LCDEN = P3^4; void delayUs() { _nop_(); } void delayMs(uint a) { uint i, j; for(i = a; i > 0; i--) for(j = 100; j > 0; j--); } void writeComm(uchar comm) { RS = 0; P0 = comm; LCDEN = 1; delayUs(); LCDEN = 0; delayMs(1); } //写数据:RS=1, RW=0; void writeData(uchar dat) { RS = 1; P0 = dat; LCDEN = 1; delayUs(); LCDEN = 0; delayMs(1); } void init() { rw = 0; dula = wela = 0; writeComm(0x38); writeComm(0x0c); writeComm(0x06); writeComm(0x01); } void writeString(uchar * str, uchar length) { uchar i; for(i = 0; i < length; i++) { writeData(str[i]); } } /**//*****************************DS18B20*******************************/ sbit ds = P2^2; void dsInit() { unsigned int i; ds = 0; i = 100; while(i>0) i--; ds = 1; i = 4; while(i>0) i--; } void dsWait() { unsigned int i; while(ds); while(~ds); i = 4; while(i > 0) i--; } bit readBit() { unsigned int i; bit b; ds = 0; i++; ds = 1; i++; i++; b = ds; i = 8; while(i>0) i--; return b; } unsigned char readByte() { unsigned int i; unsigned char j, dat; dat = 0; for(i=0; i<8; i++) { j = readBit(); dat = (j << 7) | (dat >> 1); } return dat; } void writeByte(unsigned char dat) { unsigned int i; unsigned char j; bit b; for(j = 0; j < 8; j++) { b = dat & 0x01; dat >>= 1; if(b) { ds = 0; i++; i++; ds = 1; i = 8; while(i>0) i--; } else { ds = 0; i = 8; while(i>0) i--; ds = 1; i++; i++; } } } void sendChangeCmd() { dsInit(); dsWait(); delayMs(1); writeByte(0xcc); writeByte(0x44); } void sendReadCmd() { dsInit(); dsWait(); delayMs(1); writeByte(0xcc); writeByte(0xbe); } int getTmpValue() { unsigned int tmpvalue; int value; float t; unsigned char low, high; sendReadCmd(); low = readByte(); high = readByte(); tmpvalue = high; tmpvalue <<= 8; tmpvalue |= low; value = tmpvalue; \ t = value * 0.0625; \ value = t * 100 + (value > 0 ? 0.5 : -0.5); //大于0加0.5, 小于0减0.5 return value; } void display(int v) { unsigned char count; unsigned char datas[] = {0, 0, 0, 0, 0}; unsigned int tmp = abs(v); datas[0] = tmp / 10000; datas[1] = tmp % 10000 / 1000; datas[2] = tmp % 1000 / 100; datas[3] = tmp % 100 / 10; datas[4] = tmp % 10; writeComm(0xc0+3); if(v < 0) { writeString("- ", 2); } else { writeString("+ ", 2); } if(datas[0] != 0) { writeData('0'+datas[0]); } for(count = 1; count != 5; count++) { writeData('0'+datas[count]); if(count == 2) { writeData('.'); } } } /**//*****************************DS18B20*******************************/ void main() { uchar table[] = " xianzaiwendu: "; sendChangeCmd(); init(); writeComm(0x80); writeString(table, 16); while(1) { delayMs(1000); //温度转换时间需要750ms以上 writeComm(0xc0); display(getTmpValue()); sendChangeCmd(); } }里快速回复#

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