►288◄PM2.5感測器粉塵感測器灰塵感測器 GP2Y1014AU0F 日本夏普替代 GP2Y1010AU0F

商品編號：P7349910550967　原始貨號：288

$ 150

預計出貨天數2天

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檢測原理其原理如下圖，感測器中心有個洞可以讓空氣自由流過，定向發射LED光，通過檢測經過空氣中灰塵折射過後的光線來判斷灰塵的含量。使用測試代碼: int dustPin=0; float dustVal=0; int ledPower=2; int delayTime=280; int delayTime2=40; float offTime=9680; void setup(){ Serial.begin(9600); pinMode(ledPower,OUTPUT); pinMode(dustPin, INPUT); } void loop(){ // ledPower is any digital pin on the arduino connected to Pin 3 on the sensor digitalWrite(ledPower,LOW); delayMicroseconds(delayTime); dustVal=analogRead(dustPin); delayMicroseconds(delayTime2); digitalWrite(ledPower,HIGH); delayMicroseconds(offTime); delay(1000); if (dustVal>36.455) Serial.println((float(dustVal/1024)-0.0356)*120000*0.035); } 測試得到的資料和空氣品質對照： 3000 + = 很差 1050-3000 = 差 300-1050 = 一般 150-300 = 好 75-150 = 很好 0-75 = 非常好靈敏度電流 - DC 正向 (If)電壓 - 輸出電壓 - 電源安裝類型工作溫度 0.5V/（0.1mg/m3） 10mA 3.4V 4.5 V ~ 5.5 V 底座安裝 -10°C ~ 65°C 該傳感器具有非常低的電流消耗（最大20mA，11毫安培典型值），最高7VDC供電。感測器的輸出是一個類比電壓成正比的測量粉塵密度，具有0.5V/0.1mg/m3的靈敏度。 Sensor Pin Arduino Pin 1 Vled –> 5V(150歐電阻) 2 LED-GND –> GND 3 LED –> Digital pin 2 4 S-GND –> GND 5 Vo –> Analog pin 0 6 Vcc –> 5V The LED pin has to be modulated with a cycle of 1ms as discussed in the datasheet. The LED seems to use a PNP transistor so to power on, the LED pin must actually recieve a lower voltage. Arduino 原始程式碼 int dustPin=0; int dustVal=0; int ledPower=2; int delayTime=280; int delayTime2=40; float offTime=9680; void setup(){ Serial.begin(9600); pinMode(ledPower,OUTPUT); pinMode(4, OUTPUT); } void loop(){ // ledPower is any digital pin on the arduino connected to Pin 3 on the sensor digitalWrite(ledPower,LOW); // power on the LED delayMicroseconds(delayTime); dustVal=analogRead(dustPin); // read the dust value via pin 5 on the sensor delayMicroseconds(delayTime2); digitalWrite(ledPower,HIGH); // turn the LED off delayMicroseconds(offTime); delay(3000); Serial.println(dustVal); }