功能：
0.本系统采用STC89C52作为单片机
1.液晶实时显示时间/环境光强/工作模式
2.每隔5s向蓝牙串口发送一次信息
3.支持路灯故障检测
4.工作时间18~24时，两个路灯同时点亮，24时以后，B路灯关闭，若检测到由物体通过，路灯B点亮10s后关闭
5.非工作时间，光照强度低于设定光照阈值，两个路灯点亮
6.可蓝牙控制两个路灯状态
7.按键更改时间/工作时间/光照阈值/工作模式/路灯亮度
8.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：

#define __MAIN_C
#include 
#include "main.h"bit dispFlag = 1;
bit setFlag = 0;
bit sendFlag = 0;
unsigned char setIndex = 0;
unsigned char lightValue;
unsigned char lightValueA;
unsigned char lightValueB;
unsigned char lightLimit = 70;
unsigned char timeLimit[4] = {18, 0, 5, 0};
char dispMode = DISP_NORMAL;
bit autoFlag = 0;
bit lampBDelay = 0;
bit lampAError = 0;
bit lampBError = 0;
bit lampASwitch;
bit lampBSwitch;
unsigned char lampAPWM = 3;
unsigned char lampBPWM = 3;
int cnt = 0;
unsigned int time500us = 0;
unsigned char i = 0;
unsigned char R_buf[4];void main()
{//初始化lampASwitch = LAMP_OFF;lampBSwitch = LAMP_OFF;LCD_Init();DS1302_Init();EEPROM52_Read();if (isNew == 1){DS1302_WriteTime();}DS1302_ReadTime();EEPROM52_Init();Timer0_Init();UART0_Init();DelayMs(20);//开机显示LCD_DispStr(0, 0, "    Welcome!    ");DelayS(2);LCD_Clear();DS1302_ReadTime();DispNormal(setIndex);while(1){// LCD1602液晶显示if (dispFlag == 1 && setFlag == 0){dispFlag = 0;LampCtr();CheckLamp();DS1302_ReadTime();if (dispMode == DISP_NORMAL){DispNormal(setIndex);}else if (dispMode == SET_TIME_LIMIT){DispSetLimit(setIndex);}else if (dispMode == SET_LIGHT){DispSetLight(setIndex);}else if (dispMode == CHECK_LIGHT){DispCheckLight(setIndex);}}//发送一次串口信息if (sendFlag == 1){sendFlag = 0;if (lampAError == 1){sprintf(dispRow0, "A:%d Er  ", (int)lampAPWM);}else{sprintf(dispRow0, "A:%d Ok  ", (int)lampAPWM);}if (lampBError == 1){sprintf(dispRow1, "B:%d Er", (int)lampBPWM);}else{sprintf(dispRow1, "B:%d Ok", (int)lampBPWM);}if (lampASwitch == LAMP_OFF){UART0_SendStr("C",1);}else{UART0_SendStr("O",1);}UART0_SendStr(dispRow0, 8);if (lampBSwitch == LAMP_OFF){UART0_SendStr("C",1);}else{UART0_SendStr("O",1);}UART0_SendStr(dispRow1,6);UART0_SendStr("\r\n", 2);if (autoFlag == 1){sprintf(dispRow1, "%02d:%02d:%02d L:%02d A ", (int)timeBufDec[4], (int)timeBufDec[5], (int)timeBufDec[6], (int)lightValue);}else{sprintf(dispRow1, "%02d:%02d:%02d L:%02d M ", (int)timeBufDec[4], (int)timeBufDec[5], (int)timeBufDec[6], (int)lightValue);}UART0_SendStr(dispRow1, 16);UART0_SendStr("\r\n", 2);UART0_SendStr("\r\n", 2);}KeyProcess();}
}void LampCtr()
{lightValue = 99 - 99 * ReadADC1(AIN0_GND) / 255; //读取当前光照强度if (autoFlag){if ((timeBufDec[4] == timeLimit[0] && timeBufDec[5] >= timeLimit[1]) || (timeBufDec[4] > timeLimit[0]) \|| (timeBufDec[4] == timeLimit[2] && timeBufDec[5] < timeLimit[3]) || (timeBufDec[4] < timeLimit[2])) //工作时间内路灯操作{lampASwitch = LAMP_ON;if ((timeBufDec[4] >= 0 && timeBufDec[4] < timeLimit[2]) || (timeBufDec[4] == timeLimit[2] && timeBufDec[5] < timeLimit[3])){if (!lampBDelay){lampBSwitch = LAMP_OFF;if (IRFLAG == 0) //检测到有人或车经过 启动10s定时{lampBDelay = 1; }}}else{lampBSwitch = LAMP_ON;lampBDelay = 0;}}else //工作时间外路灯操作{if (lightValue < lightLimit) //光照强度低于设定阈值{lampASwitch = LAMP_ON;lampBSwitch = LAMP_ON;}else{lampASwitch = LAMP_OFF;lampBSwitch = LAMP_OFF;}}}
}void CheckLamp()
{if (lampASwitch == LAMP_ON) //路灯A打开时，检测对应光强{lightValueA = 99 - 99 * ReadADC2(AIN1_GND) / 255; //读取当前光照强度if (lightValueA < 50) //路灯A故障声光报警 阈值可根据实际情况调整{lampAError = 1;BUZZER = 0; //打开蜂鸣器}else{lampAError = 0;}}if (lampBSwitch == LAMP_ON) //路灯B打开时，检测对应光强{lightValueB = 99 - 99 * ReadADC2(AIN0_GND) / 255; //读取当前光照强度if (lightValueB < 50) //路灯B故障声光报警 阈值可根据实际情况调整{lampBError = 1;BUZZER = 0; //打开蜂鸣器}else{lampBError = 0;}}if (lampAError == 0 && lampBError == 0) //灯都没有故障{BUZZER = 1; //关闭蜂鸣器}if (lampASwitch == LAMP_OFF && lampBSwitch == LAMP_OFF) //灯全部关闭{BUZZER = 1; //关闭蜂鸣器}}void Timer0_Init(void)
{TMOD &= 0xF0;TMOD |= 0x01;TL0 = 0x33;		//设置定时初值TH0 = 0xFE;		//设置定时初值 500usTR0 = 1; //启动T0计时ET0 = 1; //打开T0中断EA = 1;  //打开总中断
}void Timer0_Intterupt(void) interrupt 1
{static unsigned char ACount = 0;static unsigned char BCount = 0;TL0 = 0x33;		//设置定时初值TH0 = 0xFE;		//设置定时初值 500usif (cnt > 10000) //5s发送一次串口信息{sendFlag = 1;cnt = 0;}else{cnt++;}if (autoFlag){if (lampBDelay == 1){time500us++;lampBSwitch = LAMP_ON;if (time500us >= 20000) //定时10s关闭路灯B{lampBDelay = 0;lampBSwitch = LAMP_OFF;time500us = 0;}}}if (cnt % 500 == 0) //250ms刷新一次状态{dispFlag = 1;if (setFlag == 1){LCD_WriteCommand(0x0F, 0);LCD_WriteCommand(0x0F, 0);}else{LCD_WriteCommand(0x0C, 0);LCD_WriteCommand(0x0C, 0);}}if (lampASwitch == LAMP_ON){ACount++;if (ACount <= lampAPWM) //占空比调节{LAMPA = LAMP_ON;}else if ((ACount > lampAPWM) && (ACount <= 3)){LAMPA = LAMP_OFF;}else{ACount = 0;}}else{LAMPA = LAMP_OFF;}   if (lampBSwitch == LAMP_ON){BCount++;if (BCount <= lampBPWM) //占空比调节{LAMPB = LAMP_ON;}else if ((BCount > lampBPWM) && (BCount <= 3)){LAMPB = LAMP_OFF;}else{BCount = 0;}}else{LAMPB = LAMP_OFF;}      
}void UART0_Init()
{SCON = 0x50;TMOD &= 0x0F;TMOD |= 0x20; //8位自动重装TH1  = RH_UART;TL1  = TH1;ET1  = 0; //禁止T1中断TR1  = 1; //启动T1计时ES   = 1; //打开串口中断EA   = 1; //打开总中断
}void UART0_SendByte(unsigned char dat) //串口发送单字节数据
{unsigned char time_out;time_out = 0x00;SBUF = dat;						  //将数据放入SBUF中while ((!TI) && (time_out < 100)) //检测是否发送出去{time_out++;DelayUs10x(2);}		//未发送出去 进行短暂延时TI = 0; //清除ti标志
}void UART0_SendStr(unsigned char *str, unsigned char length) //发送定长度字符串
{
// 	unsigned char *tmp;unsigned char cnt = 0;
//    unsigned char length = 0;//    tmp = str;
//    while (*(tmp++) != '\0')
//    {
//        length++;
//    }while (cnt < length) //发送长度对比{UART0_SendByte(*str); //发送单字节数据str++;		  //指针++cnt++;		  //下一个++}
}void UART0_Interrupt() interrupt 4 
{if (RI){RI = 0;if (SBUF == '*'){i = 0;}R_buf[i] = SBUF;SBUF = SBUF;i++;if (i == 4){i = 0;if (R_buf[0] == '*' && R_buf[3] == '#'){if (R_buf[1] == 'A'){if (R_buf[2] == '0'){lampASwitch = LAMP_OFF;lampAPWM = 0;}else if (R_buf[2] == '1'){lampASwitch = LAMP_ON;lampAPWM = 1;}else if (R_buf[2] == '2'){lampASwitch = LAMP_ON;lampAPWM = 2;}else if (R_buf[2] == '3'){lampASwitch = LAMP_ON;lampAPWM = 3;}}else if (R_buf[1] == 'B'){if (R_buf[2] == '0'){lampBSwitch = LAMP_OFF;lampBPWM = 0;}else if (R_buf[2] == '1'){lampBSwitch = LAMP_ON;lampBPWM = 1;}else if (R_buf[2] == '2'){lampBSwitch = LAMP_ON;lampBPWM = 2;}else if (R_buf[2] == '3'){lampBSwitch = LAMP_ON;lampBPWM = 3;}}else if (R_buf[1] == 'M'){if (R_buf[2] == 'A'){autoFlag = 1;}else if (R_buf[2] == 'M'){autoFlag = 0;}}}}}if (TI){TI = 0;}
}

仿真演示视频：
https://www.bilibili.com/video/BV1jf4y1b71a/

实物演示视频：
https://www.bilibili.com/video/BV1Su411q7v1/