基于單片機的水塔水位控制系統(tǒng)

附錄二程序源代碼#include<reg51.h>#defineuintunsignedint#defineucharunsignedcharsbitled=P0^1;//led燈顯示,低電平亮sbitspeaker=P1^0;//蜂鳴器，低電平報警sbitlcd_rs=P0^7;//1602數(shù)據(jù)選擇命令端sbitlcd_rw=P0^6; //1602讀寫選擇端sbitlcd_enable=P0^5;//1602使能端定義sbitkey_up=P3^0;//pwm速度調整端口，電機速度加一sbitkey_down=P3^1; //pwm速度調整端口，電機速度減一sbitmonter=P1^1;//電機驅動端口，pwm操縱輸出sbitwater_normal=P1^6;//水位過高傳感器模擬按鍵端口，低電平報警sbitwater_low=P1^7;//水位過低傳感器模擬按鍵端口，低電平報警ucharcodepwm_t[]={45,90,100,130};//模式下的pwm值，人為差不多設定的時刻是100，能夠調整上限值uintmodel=1,pwmT=150,time_count=0;voidkey_scan();//按鍵掃描函數(shù)voidcheck_water_level();//檢測水位是否正常函數(shù)voiddelay(uintz) //延時函數(shù){uintx,y;for(x=z;x>0;x--)for(y=110;y>0;y--);}//*******************1602液晶顯示函數(shù)************************// voidlcd_write_comd(ucharcomd) //1602寫指令函數(shù){lcd_rs=0;//選擇指令lcd_rw=0;//選擇寫 delay(5); P2=comd;//取命令delay(8); lcd_enable=1;//使能有效 delay(8); lcd_enable=0;}voidlcd_write_data(uchardate)//1602寫數(shù)據(jù)函數(shù){ lcd_rs=1; //選擇數(shù)據(jù)lcd_rw=0; //選擇寫操作 delay(5); P2=date; //取數(shù)據(jù)操作 delay(8); lcd_enable=1; //使能有效 delay(8); lcd_enable=0;}voidlcd_set_xy(ucharx,uchary)//定位具體位置{uintaddress;if(y==1)address=0x80+x; //第一行的位置 else address=0xc0+x; //第二行的位置 lcd_write_comd(address);}voidlcd_write_char(ucharx,uchary,uchardate) //寫一個字符函數(shù){ lcd_set_xy(x,y); //設定位置 lcd_write_data(date); //寫入數(shù)據(jù)}voidlcd_write_string(ucharx,uchary,uchar*s) //寫一個字符串函數(shù){ lcd_set_xy(x,y); //設定位置while(*s) //循環(huán)寫入數(shù)據(jù) { lcd_write_data(*s); s++; } }//********電機PWM調速函數(shù)及程序主函數(shù)*******//voidinit() //初始化函數(shù){ uchari,count=25; led=1; //開機led燈閃耀for(i=0;i<15;i++){ led=~led; delay(count); count=count+5; }led=0; lcd_write_comd(0x38);//設置16*2行顯示，5*7點陣，8位數(shù)據(jù)接口lcd_write_comd(0x0c);//開顯示lcd_write_comd(0x01);//清屏lcd_write_comd(0x80);//設定初始位置lcd_write_string(0,1,"WaterLev:Normal");lcd_write_string(0,0,"MonterSpeed:1");speaker=0; //蜂鳴器鳴響一聲delay(1000);speaker=1; TMOD=0X02; //定時0，定時時刻為150us，工作在方式2TH0=(256-150)%256; TL0=TH0;EA=1; //開總中斷ET0=1; //開定時器0的中斷TR0=0; //定時器0不啟動}voidmain()//主函數(shù){init();while(1) { key_scan(); check_water_level();//檢測水位是否正常函數(shù) }}voidtimre_0()interrupt1 //定時器0的中斷子函數(shù){time_count++;if(time_count==pwmT) //和PWM脈寬的時刻比較，時刻到了定時器清零，重新開始{time_count=0;}if(time_count<pwm_t[model-1]) //當計數(shù)器在PWM定制時刻內(nèi)的時候，輸出相關的pwm操縱信號{ monter=0; }else { monter=1; }}voidcheck_water_level()//檢測水位是否正常函數(shù){uchari; if(water_normal==0) //水位是否正常狀態(tài)檢測 {led=1; TR0=0; monter=1; //關閉電機 speaker=0; //蜂鳴器報警 lcd_write_string(0,1,"WaterLev:Normal");//液晶屏顯示 for(i=0;i<20;i++) //燈閃耀報警 { led=~led; delay(100); } led=0; speaker=1; } if(water_low==0) //水位過低檢測 {led=1; TR0=1; //開啟電機 monter=0; speaker=0; //蜂鳴器報警 lcd_write_string(0,1,"WaterLev:Low");//液晶屏顯示 for(i=0;i<20;i++)//燈閃耀報警 { led=~led; delay(100); } led=0; speaker=1; }}voidkey_scan() //按鍵掃描函數(shù){uchari;if(key_up==0) //檢測是否增加按鍵按下 {delay(15); if(key_up==0) {TR0=0; //有按鍵按下，電機一定要停止轉動 model++; //pwm速度定制值調整加大 if(model==5) model=1; i=model+0x30; lcd_write_char(14,0,i);//液晶顯示變化 while(!key_up); //按鍵是否釋放檢測 } } if(key_down==0) //檢測是否減少按鍵按下 {delay(15); if(key_down==0) { TR0=0;//有按鍵按下，電機一定要停止轉