简介：
PM2.5粉尘传感器GP2Y1010AU0F空气质量PM2.5检测是一款光学空气质量传感器，其内部对角安放着红外线发光二极管和光电晶体管，使得其能够探测到空气中尘埃反射光，即使非常细小的如烟草烟雾颗粒也能够被检测到，通常在空气净化系统中应用。可测量0.8微米以上的微笑粒子,感知烟草产生的咽气和花粉,房屋粉尘等.体积小,重量轻,便于安装，广泛应用于空气清新机,换气空调,换气扇等产品
该传感器具有非常低的电流消耗（大20mA，典型值11mA），可使用高达7VDC。该传感器输出为模拟电压，其值与粉尘浓度成正比。
可测量0.8微米以上的微笑粒子,感知烟草产生的咽气和花粉,房屋粉尘等.体积小,重量轻,便于安装，广泛应用于空气清新机,换气空调,换气扇等产品.
灵敏度：
0.5V/0.1mg/m3
尺寸:
(46.0 × 30.0 × 17.6 mm)
Do not miss the 150ohm resistor and a 220uF capacitor
| Sensor Pin | Arduino Pin | ||
| 1 | Vled | –> | 5V (150ohm resistor) |
| 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.
| 例程: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); } |
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