夏普 GP2Y1010AU0F 灰尘传感器
来自Jack's Lab
目录 |
1 概述
GP2Y1010 Datasheet: https://www.sparkfun.com/datasheets/Sensors/gp2y1010au_e.pdf
2 PIN
Sharp pin 1 (V-LED) => 5V (connected to 150ohm resister) Sharp pin 2 (LED-GND) => Arduino GND pin Sharp pin 3 (LED) => Arduino pin 2 Sharp pin 4 (S-GND) => Arduino GND pin Sharp pin 5 (Vo) => Arduino A0 pin Sharp pin 6 (Vcc) => 5V
3 电路
4 程序
/* Interface to Sharp GP2Y1010AU0F Particle Sensor Program by Christopher Nafis Written April 2012 http://www.sparkfun.com/datasheets/Sensors/gp2y1010au_e.pdf http://sensorapp.net/?p=479 Sharp pin 1 (V-LED) => 5V (connected to 150ohm resister) Sharp pin 2 (LED-GND) => Arduino GND pin Sharp pin 3 (LED) => Arduino pin 4 Sharp pin 4 (S-GND) => Arduino GND pin Sharp pin 5 (Vo) => Arduino A4 pin Sharp pin 6 (Vcc) => 5V */ #include <stdlib.h> long lastConnectionTime = 0; // last time you update to the server, in milliseconds const int postingInterval = 10000; // delay between two updates int dustPin = 4; int ledPower = 4; int delayTime = 280; int delayTime2 = 40; float offTime = 9680; int dustVal = 0; int i = 0; float ppm = 0; char s[32]; float voltage = 0; float dustdensity = 0; float ppmpercf = 0; void setup(){ Serial.begin(9600); pinMode(ledPower,OUTPUT); delay(1000); i = 0; ppm =0; } void loop(){ i = i + 1; digitalWrite(ledPower,LOW); // power on the LED delayMicroseconds(delayTime); dustVal = analogRead(dustPin); // read the dust value ppm = ppm + dustVal; delayMicroseconds(delayTime2); digitalWrite(ledPower,HIGH); // turn the LED off delayMicroseconds(offTime); if((millis() - lastConnectionTime > postingInterval)) { voltage = ppm/i*0.0049; dustdensity = 0.17*voltage-0.1; ppmpercf = (voltage-0.0256)*120000; if (ppmpercf < 0) ppmpercf = 0; if (dustdensity < 0 ) dustdensity = 0; if (dustdensity > 0.5) dustdensity = 0.5; String dataString = ""; dataString += dtostrf(voltage, 9, 4, s); dataString += ","; dataString += dtostrf(dustdensity, 5, 2, s); dataString += ","; dataString += dtostrf(ppmpercf, 8, 0, s); i=0; ppm=0; Serial.println(dataString); lastConnectionTime = millis(); } delay(3000); }
5 简化版程序
int dustPin=4; int dustVal=0; int ledPower=4; int delayTime=280; int delayTime2=40; float offTime=9680; void setup(){ Serial.begin(9600); pinMode(ledPower,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); }
6 值判读
> https://www.airnow.gov/index.cfm?action=airnow.calculator
Air Quality Chart - Small Count Reading (0.5 micron)+
3000 + = VERY POOR 1050-3000 = POOR 300-1050 = FAIR 150-300 = GOOD 75-150 = VERY GOOD 0-75 = EXCELLENT
7 参考
- http://www.howmuchsnow.com/arduino/airquality/
- http://sensorapp.net/sharp-dust-sensor-and-arduino/
- https://www.sparkfun.com/datasheets/Sensors/gp2y1010au_e.pdf