功能介紹：
0.本系統采用STC89C52作為單片機
1.系統實時監測水族箱溫度及水質，并定時向WIFI串口發送監測信息
2.當水質超過設定閾值時，啟動換水繼電器
3.按鍵可設定閾值，可手動換水，喂食，補氧，每次執行5s左右
4.WIFI可發送命令實現換水，喂食，補氧，每次執行5s左右
*W# 換水 *O# 補氧 *F# 喂食
5.采用DC002作為電源接口可直接輸入5V給整個系統供電

原理圖：

PCB：

主程序：

#include "main.h"/*******************變量定義*********************/ enum _MODE_DF_ dispMode; uchar setIndex = 0; //設置位置 int tempBuf = 0; float temperature; //溫度 uint qualityMax = 50; uint waterQuality; uint waterDelay = 0; uint O2Delay = 0; uint feedDelay = 0;bit dispFlag = 0; bit sendFlag = 0;char dis[32];/******************************************************** 函數名稱:void mian() 函數作用:主函數 參數說明: ********************************************************/ void main() {Timer0_Init(); //初始化定時器0UART_Init(); //初始化串口LCD_Init(); //初始化液晶DelayMs(200); //延時有助于穩定LCD_DispStr(4, 0, "Welcome!");UART_SendStr("AT+CIPMUX=1\r\n", 13); //打開多連接DelayS(1);UART_SendStr("AT+CIPSERVER=1,8080\r\n", 21); //建立服務 端口號為8080DelayS(1);LCD_Clear(); //清屏while (1) //死循環{if (dispFlag == 1){dispFlag = 0;if (dispMode == NORMAL){DispNormal();}if (sendFlag == 1){sendFlag = 0;SendData();}if (waterQuality > qualityMax) //水質差{waterDelay = 10; //啟動換水計時}if (waterDelay > 0){waterDelay--;RELAY_WATER = ON; //啟動換水繼電器}else{RELAY_WATER = OFF;}if (O2Delay > 0){O2Delay--;RELAY_O2 = ON; //啟動補氧繼電器}else{RELAY_O2 = OFF;}if (feedDelay > 0){feedDelay--;RELAY_FEED = ON; //啟動喂食繼電器}else{RELAY_FEED = OFF;}}KeyProcess();} }/*------------------------------------------------定時器初始化子程序 ------------------------------------------------*/ void Timer0_Init(void) {TMOD |= 0x01; //使用模式1，16位定時器，使用"|"符號可以在使用多個定時器時不受影響TH0 = (65536 - 9216) / 256; //重新賦值 10msTL0 = (65536 - 9216) % 256;EA = 1; //總中斷打開ET0 = 1; //定時器中斷打開TR0 = 1; //定時器開關打開 } /*------------------------------------------------定時器中斷子程序 ------------------------------------------------*/ void Timer0_Interrupt(void) interrupt 1 {static unsigned int time10ms = 0;TH0 = (65536 - 9216) / 256; //重新賦值 10msTL0 = (65536 - 9216) % 256;time10ms++;if (time10ms % 50 == 0){dispFlag = 1; //顯示標志}if (time10ms > 500){time10ms = 0;sendFlag = 1; //WIFI發送信息標志}}void SendData(void) {UART_SendStr("AT+CIPSEND=0,31\r\n", 17); //發送數據DelayMs(100);sprintf(dis, "Quality: %4dppm Temp:%5.1f'C\r\n", waterQuality, temperature); //串口發送UART_SendStr(dis, 31); //發送數據DelayMs(100); }void DispNormal(void) {TR0 = 0;DS18B20_Start();DS18B20_GetTemp(&tempBuf);temperature = 0.0625 * tempBuf;sprintf(dis, "Temp:%5.1f", temperature);LCD_DispStr(0, 0, dis);LCD_DispOneChar(10, 0, 0xdf);LCD_DispOneChar(11, 0, 'C');waterQuality = ReadADC(AIN0_GND);waterQuality = 1000 * ((float)waterQuality / 118);TR0 = 1;sprintf(dis, "Quality: %4dppm", waterQuality);LCD_DispStr(0, 1, dis);}void DispSetWaterQiality(unsigned char setIndex) {LCD_DispStr(0, 0, "Set WaterQuality");sprintf(dis, " Max:%3dppm ", qualityMax);LCD_DispStr(0, 1, dis);switch (setIndex){case 1: LCD_SetCursor(10, 1, 1); break;default:;} }void UART_Init(void) {SCON = 0x50;TH2 = 0xFF;TL2 = 0xFD;RCAP2H = 0xFF; //(65536-(FOSC/32/BAUD)) BAUD = 115200 FOSC = 11059200RCAP2L = 0xFD;/*****************/TCLK = 1;RCLK = 1;C_T2 = 0;EXEN2 = 0;/*****************/TR2 = 1;ES = 1; //打開串口中斷EA = 1; //打開總中斷}void UART_SendByte(unsigned char dat) //串口發送單字節數據 {unsigned char time_out;time_out = 0;SBUF = dat; //將數據放入SBUF中while ((!TI) && (time_out < 100)) //檢測是否發送出去{time_out++;DelayUs10x(2);} //未發送出去 進行短暫延時TI = 0; //清除ti標志 }void UART_SendStr(unsigned char *s, unsigned char length) //發送定長度字符串 {unsigned char num;num = 0x00;while (num < length) //發送長度對比{UART_SendByte(*s); //放松單字節數據s++; //指針++num++; //下一個++} }void UART_Interrupt(void) interrupt 4 //串行中斷服務程序 {static unsigned char i = 0;static unsigned char firstBit = 0;static unsigned char R_buf[3];if (RI)//判斷是接收中斷產生{RI = 0; //標志位清零if (SBUF == '*'){firstBit = 1; //接收標志成功i = 0;R_buf[1] = 0;R_buf[2] = 0;}if (firstBit == 1){R_buf[i] = SBUF;SBUF = SBUF;i++;if (i == 3){i = 0;if (R_buf[0] == '*' && R_buf[2] == '#'){if (R_buf[1] == 'W') //換水命令{waterDelay = 10;}else if (R_buf[1] == 'O') //補氧命令{O2Delay = 10;}else if (R_buf[1] == 'F') //喂食命令{feedDelay = 10;}}firstBit = 0;}}} }

仿真演示視頻：
https://www.bilibili.com/video/BV1KF411j7vs/

實物演示視頻：
https://www.bilibili.com/video/BV1cr4y1t7xj/

總結

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