基于51单片机的智能时钟三个闹钟温度计proteus仿真原理图PCB

功能介绍：
0.本系统采用STC89C52作为单片机
1.系统实时显示当前的日期/时间/温度
2.系统支持三个闹钟设定
3.系统具备0点提醒功能
4.系统支持设定温度阈值，超过温度阈值，蜂鸣器报警
5.采用DC002作为电源接口可直接输入5V给整个系统供电

原理图：

PCB：

主程序：

#include  //调用单片机头文件
#include "ds1302.h"
#include "lcd1602.h"

#define uchar unsigned char //无符号字符型 宏定义	变量范围0~255
#define uint unsigned int	//无符号整型 宏定义	变量范围0~65535

sbit DQ = P1 ^ 0; // 18b20 IO口的定义

bit flag_200ms;
bit flag_100ms;
sbit beep = P2 ^ 0; //蜂鸣器定义
uchar menu_1, menu_2;
unsigned char rev = 2;
uchar Count;
bit flag_moshi;
bit flag_alarm, flag_alarm_control;
uint temperature; //温度变量

bit open1 = 1, open2 = 1, open3 = 1, open4 = 1, open5 = 1, open6 = 1;
uchar fen1 = 0x0, shi1 = 0x08; //第1个开关的时间
uchar fen2 = 0x1, shi2 = 0x08; //第2个开关的时间
uchar fen3 = 0x0, shi3 = 0x10; //第3个开关的时间
uchar fen4 = 0x1, shi4 = 0x10; //第4个开关的时间
uchar fen5 = 0x0, shi5 = 0x12; //第5个开关的时间
uchar fen6 = 0x1, shi6 = 0x12; //第6个开关的时间
uint t_high = 400;			   //温度上限
/******************1ms 延时函数*******************/
void delay_1ms(uint q)
{
	uint i, j;
	for (i = 0; i < q; i++)
		for (j = 0; j < 120; j++)
			;
}

/*************时间温度显示程序***************/
void init_1602_ds1302()
{
	write_sfm2_ds1302(1, 1, shi);		  //显示时
	write_sfm2_ds1302(1, 4, fen);		  //显示分
	write_sfm2_ds1302(1, 7, miao);		  //显示秒
	write_sfm3_18B20(1, 11, temperature); //显示温度
	write_sfm2_ds1302(2, 2, nian);		  //显示年
	write_sfm2_ds1302(2, 5, yue);		  //显示月
	write_sfm2_ds1302(2, 8, ri);		  //显示日
	write_sfm1(2, 14, week);
}

/*************定时器0初始化程序***************/
void init_time0()
{
	EA = 1;		 //开总中断
	TMOD = 0X01; //定时器0、工作方式1
	ET0 = 1;	 //开定时器0中断
	TR0 = 1;	 //允许定时器0定时
}

/*************开关函数***************/
void menu_dis()
{
	if (((fen == fen1) && (shi == shi1) && (open1 == 1)) ||
		((fen == fen3) && (shi == shi3) && (open3 == 1)) ||
		((fen == fen5) && (shi == shi5) && (open5 == 1)))
	{ //打开开关
		flag_alarm_control = 1;
		if (flag_alarm == 0)
			beep = 0;
	}

	if (((fen == fen2) && (shi == shi2) && (open2 == 1)) ||
		((fen == fen4) && (shi == shi4) && (open4 == 1)) ||
		((fen == fen6) && (shi == shi6) && (open6 == 1)))
	{ //关闭开关
		flag_alarm = 0;
		flag_alarm_control = 0;
		beep = 1;
	}
	if ((shi == 0) && (fen == 0) && (miao == 0))
	{
		beep = 0;
		delay_1ms(300);
		beep = 1;
	}
}

/********************独立按键程序*****************/
uchar key_can; //按键值

void key() //独立按键程序
{
	static uchar key_new;
	key_can = 0;			 //按键值还原
	P3 |= 0x78;				 //对应的按键IO口输出为1
	if ((P3 & 0xF0) != 0xF0) //按键按下
	{
		delay_1ms(1); //按键消抖动
		if (((P3 & 0xF0) != 0xF0) && (key_new == 1))
		{ //确认是按键按下
			key_new = 0;
			switch (P3 & 0xF0)
			{
			case 0x70:
				key_can = 2;
				break; //得到按键值//选择键
			case 0xB0:
				key_can = 3;
				break; //得到按键值//加
			case 0xD0:
				key_can = 1;
				break; //得到按键值//设置键
			case 0xE0:
				key_can = 4;
				break; //得到按键值//减
			}
		}
	}
	else
		key_new = 1;
}

/**********************设置函数************************/
void key_with()
{
	if ((menu_1 == 0) && (flag_alarm_control == 1)) //正常状态，取消闹钟报警
	{
		if ((key_can == 2) || (key_can == 3) || (key_can == 4))
		{
			flag_alarm = 1;
			beep = 1;
		}
	}
	if (key_can == 1) //设置键
	{
		menu_1++;
		if (menu_1 == 1) //设置时间
		{
			menu_2 = 1;
			write_string(1, 0, "    :  :    W:  ");
			write_string(2, 0, " 20  -  -       ");
		}
		menu_2 = 1;
		if (menu_1 > 5) //回到正常显示
		{
			menu_1 = 0;
			write_guanbiao(1, 2, 0); //关闭光标
			init_1602_dis_csf();	 //初始化液晶显示
		}
	}
	if (key_can == 2) //选择键
	{
		flag_200ms = 1;
		if (menu_1 == 1) //设置时间
		{
			menu_2++;
			if (menu_2 > 7)
				menu_2 = 1;
		}
		if (menu_1 != 1) //设置
		{
			menu_2++;
			if (menu_2 > 6)
				menu_2 = 1;
		}
	}
	if (menu_1 == 1)
	{
		if (menu_2 == 1) //设置时
		{
			if (key_can == 3) //加
				set_ds1302time(1, &shi, 0x24);
			if (key_can == 4) //减
				set_ds1302time(0, &shi, 0x24);
		}
		if (menu_2 == 2) //设置分
		{
			if (key_can == 3) //加
				set_ds1302time(1, &fen, 0x60);
			if (key_can == 4) //减
				set_ds1302time(0, &fen, 0x60);
		}
		if (menu_2 == 3) //设置秒
		{
			if (key_can == 3) //加
				set_ds1302time(1, &miao, 0x60);
			if (key_can == 4) //减
				set_ds1302time(0, &miao, 0x60);
		}
		if (menu_2 == 4) //设置星期
		{
			if (key_can == 3) //加
				set_ds1302week(1, &week, 8);
			if (key_can == 4) //减
				set_ds1302week(0, &week, 8);
		}
		if (menu_2 == 5) //设置年
		{
			if (key_can == 3) //加
				set_ds1302time(1, &nian, 0x9A);
			if (key_can == 4) //减
				set_ds1302time(0, &nian, 0x9A);
		}
		if (menu_2 == 6) //设置月
		{
			if (key_can == 3) //加
				set_ds1302time(1, &yue, 0x13);
			if (key_can == 4) //减
				set_ds1302time(0, &yue, 0x13);
		}
		if (menu_2 == 7) //设置日
		{
			if (key_can == 3) //加
				set_ds1302time(1, &ri, 0x32);
			if (key_can == 4) //减
				set_ds1302time(0, &ri, 0x32);
		}
		write_sfm2_ds1302(1, 2, shi);  //显示时
		write_sfm2_ds1302(1, 5, fen);  //显示分
		write_sfm2_ds1302(1, 8, miao); //显示秒
		write_sfm1(1, 14, week);	   //显示星期
		write_sfm2_ds1302(2, 3, nian); //显示年
		write_sfm2_ds1302(2, 6, yue);  //显示月
		write_sfm2_ds1302(2, 9, ri);   //显示日
		switch (menu_2)				   // 光标显示
		{
		case 1:
			write_guanbiao(1, 2, 1);
			break;
		case 2:
			write_guanbiao(1, 5, 1);
			break;
		case 3:
			write_guanbiao(1, 8, 1);
			break;
		case 4:
			write_guanbiao(1, 14, 1);
			break;
		case 5:
			write_guanbiao(2, 3, 1);
			break;
		case 6:
			write_guanbiao(2, 6, 1);
			break;
		case 7:
			write_guanbiao(2, 9, 1);
			break;
		}
		write_time(); //把时间写进去
	}

仿真演示视频：
https://www.bilibili.com/video/BV1Km4y1P7ZF/

实物演示视频：
https://www.bilibili.com/video/BV1be411L7Y1/