《單片機(jī)應(yīng)用技術(shù)》課件-PM2.5環(huán)境測(cè)試檢測(cè)儀

PM2.5環(huán)境檢測(cè)儀電信工程系制作總計(jì)劃：組裝硬件：按照各管腳的功能連接各管腳。軟件編輯：從開(kāi)始定義串口再打開(kāi)串口接收采樣數(shù)據(jù)，最后關(guān)閉串口，并且處理采樣數(shù)據(jù)及顯示，依次循環(huán)。調(diào)試運(yùn)行：根據(jù)傳感器的敏感度調(diào)試比例系數(shù)。1.硬件部分：PM2.5粉塵傳感器1個(gè)TPYBoardv102開(kāi)發(fā)板1塊Lcd5110顯示屏1個(gè)杜邦線(xiàn)若干microUSB數(shù)據(jù)線(xiàn)1條1.1引腳連接方式：

(1)傳感器管腳鏈接:(2)PM2.5檢測(cè)儀整體接線(xiàn)：1.2硬件組裝后：2.軟件部分：2.1定義串口：#M0=Pin('X1',Pin.OUT_PP)i=0E=0F=0W=0P=0L=0K=1T=0SHUCHU=0A=800G=1024/5SHI=0RST=pyb.Pin('Y10')CE=pyb.Pin('Y11')DC=pyb.Pin('Y9')LIGHT=pyb.Pin('Y12')2.2打開(kāi)串口：whileTrue:u2=UART(2,2400)pyb.delay(1000)#print('kaishi')u2.deinit()pyb.delay(10)if(u2.any()>0):W=1_dataRead=u2.readall()#print('_dataRead=',_dataRead)R=0while(W>0):#print('截取開(kāi)始')T=_dataRead[R]if(T==170):E=R+1F=R+2#R=_dataRead[65]#print('十位=',_dataRead[E])#print('個(gè)位=',_dataRead[F])W=0R=R+1P=_dataRead[E]L=_dataRead[F]SHI=P*256+LSHUCHU=SHI/G*Aif(SHUCHU<35):2.2打開(kāi)串口：Quality='Excellente'print('環(huán)境質(zhì)量:優(yōu)','PM2.5=',SHUCHU)pyb.LED(1).off()pyb.LED(2).on()pyb.LED(3).off()pyb.LED(4).off()elif(35<SHUCHU<75):Quality='Good'print('環(huán)境質(zhì)量：良好','PM2.5=',SHUCHU)pyb.LED(1).off()pyb.LED(2).on()pyb.LED(3).off()pyb.LED(4).off()elif(75<SHUCHU<115):Quality='Slightly-polluted'print('環(huán)境質(zhì)量：輕度污染','PM2.5=',SHUCHU)pyb.LED(1).off()pyb.LED(2).off()pyb.LED(3).on()pyb.LED(4).off()elif(115<SHUCHU<150):Quality='Mediumpollution'print('環(huán)境質(zhì)量：中度污染','PM2.5=',SHUCHU)pyb.LED(1).off()pyb.LED(2).off()pyb.LED(3).on()pyb.LED(4).off()elif(150<SHUCHU<250):Quality='Heavypollution'print('環(huán)境質(zhì)量：重度污染','PM2.5=',SHUCHU)pyb.LED(1).on()pyb.LED(2).off()pyb.LED(3).off()pyb.LED(4).off()elif(250<SHUCHU):Quality='Seriouspollution'print('環(huán)境質(zhì)量：嚴(yán)重污染','PM2.5=',SHUCHU)pyb.LED(1).on()pyb.LED(2).off()pyb.LED(3).on()pyb.LED(4).off()2.3關(guān)閉串口：lcd_5110=upcd8544.PCD8544(SPI,RST,CE,DC,LIGHT)lcd_5110.lcd_write_string('AQILevel',0,0)lcd_5110.lcd_write_string(str(Quality),0,1)lcd_5110.lcd_write_string('PM2.5:',0,2)lcd_5110.lcd_write_s