单总线挂接4路ds18B20温度监测系统仿真程序加电路

ID:117146 · 发表于 2016-4-27 20:31

51单片机做的单总线挂接4路ds18B20的动态温度监测系统

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单总线挂接4路ds18B20温度监测系统.zip (273.05 KB, 下载次数: 46)

2016-4-27 20:30 上传

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文件

实物图：

4路ds18B20温度监测系统proteus仿真图电路图：

部分程序预览（完整代码请下载附件）：

#include "lcd1602.h"
#include "ds18b20.h"
unsigned char temp[5];
extern char xiaoshu_temp[5],zhen_temp[4];
extern bit flag;
extern bit dot_dis;
sbit beep=P2^3;
uchar ds18b20_num1[8]={0x8e,0x00,0x00,0x00,0xb8,0xc5,0x30,0x28};
uchar ds18b20_num2[8]={0xfd,0x00,0x00,0x00,0xb8,0xc5,0x45,0x28};
uchar ds18b20_num3[8]={0xb9,0x00,0x00,0x00,0xb8,0xc5,0x31,0x28};
uchar ds18b20_num4[8]={0xe0,0x00,0x00,0x00,0xb8,0xc5,0x32,0x28};
void delay(unsigned int time)
{
unsigned int i,j;
for(i=0;i<time;i++)
for(j=0;j<200;j++);
}
void main(void)
{
uchar i;
char *str1="1:";
char *str2="2:";
char *str3="3:";
char *str4="4:";
serial_set();
Lcd_Init();
ClrScreen();
GotoXY(0,0);
dot_dis=1;
while(1)
{
ds18b20_init();
ds18b20_writecommand(0xcc);
ds18b20_writecommand(0x44); //转换
delay(500);
match_rom(ds18b20_num1); //匹配第一路
ds18b20_writecommand(0xbe); //读
for(i=0;i<2;i++)
{
temp[i]=ds18b20_readdata();
}
temperature_process(temp[0],temp[1]);
Screen_home();
Print(str1);
if(!flag) //正
{
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
else //负
{
Print("-");
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
Print(" ");
ds18b20_init();
ds18b20_writecommand(0xcc);
ds18b20_writecommand(0x44); //转换
delay(500);
match_rom(ds18b20_num2); //匹配第二路
ds18b20_writecommand(0xbe); //读
for(i=0;i<2;i++)
{
temp[i]=ds18b20_readdata();
}
temperature_process(temp[0],temp[1]);
GotoXY(9,0);
Print(str2);
if(!flag) //正
{
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
else //负
{
Print("-");
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
Print(" ");
ds18b20_init();
ds18b20_writecommand(0xcc);
ds18b20_writecommand(0x44); //转换
delay(500);
match_rom(ds18b20_num3); //匹配第三路
ds18b20_writecommand(0xbe); //读
for(i=0;i<2;i++)
{
temp[i]=ds18b20_readdata();
}
temperature_process(temp[0],temp[1]);
GotoXY(0,1);
Print(str3);
if(!flag) //正
{
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
else //负
{
Print("-");
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
Print(" ");
ds18b20_init();
ds18b20_writecommand(0xcc);
ds18b20_writecommand(0x44); //转换
delay(500);
match_rom(ds18b20_num4); //匹配第二路
ds18b20_writecommand(0xbe); //读
for(i=0;i<2;i++)
{
temp[i]=ds18b20_readdata();
}
temperature_process(temp[0],temp[1]);
GotoXY(9,1);
Print(str4);
if(!flag) //正
{
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
else //负
{
Print("-");
Print(zhen_temp);
if(dot_dis)
Print(".");
Print(xiaoshu_temp);
}
Print(" ");
//delay(100);
}
while(1);
}

复制代码

ID:222743 · 发表于 2017-7-27 12:56

我来学习一下~最近正好在学这个呢

ID:324139 · 发表于 2018-5-7 21:42

有原理图吗？

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单总线挂接4路ds18B20温度监测系统仿真程序加电路

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