AQI - Air Quality Index
As of now we have 3 sensors installed that transmit data every 5 minutes and collect the measurements in a database. Two sensors are located in Nha Be (one indoors and one outdoors) and another one is located in Phy My Hung. Let’s compare the PM 2.5 values from last year:
Nha Be outdoor (12779556)
Here is the link to the dashboard for all the recent data of PM2.5 and PM10. Further there is humidity and temperature.
Nha Be indoor (8808591)
Here is the link to the dashboard for all the recent data of PM2.5 and PM10. Further there is humidity and temperature.
Phy My Hung outdoor (1129419)
Here is the link to the dashboard for all the recent data of PM2.5 and PM10. Further there is humidity and temperature.
Phy My Hung indoor (4872940)
Here is humidity and temperature most recent.
Build your own sensor
You can actually build your own sensor and contribute to a worldwide network of air quality sensors. In europe many people did so and the real-time results on a map look like this:
The updated map can be found behind this link. In Eurasia there are less seonsors:
And worldwide some more updates are needed:
More data - PM10, temperature, humidity, Wifi
The stations not just measure the PM2.5 value, but other values as well. Let’s take the station in Phy My Hung for example (1129419), running since 2018:
PM 10 over a week
Temperature over a week
Change in humidity
Wifi signal strength
More specific sensor data
PM 2.5 and PM10 Temperature and Humidity
The air in Ho Chi Minh City is getting more and more polluted in recent years. Can we add some valid data to the smog and fog we see more often?
Measure and educate
In order to understand the situation we want to build our own sensors and collect data. Building helps understand WHAT AQI, PM10 and PM2.5 are and what the relation to our health is. The same time we learn HOW to measure the quality of air. We will try to measure Ozon, PM2.5 and Carbon Monoxide.
- MQ-131 sensor with black cap for low concentration 390,000₫
- GP2Y1010AU0F PM2.5 sensor 102,000₫
- LM393 CO MQ-7 CO sensor 10-1000 ppm (AQI 105-999) 25,000₫
Simple Arduino, Sharp sensor and 1602 display
You can get a finished sensor with Arduino, 1602 display and the sharp sensor GP2Y1010AU0F for 20 dollars or 419,000 VND: lazada.vn: Household PM2.5 Detector Module
The sensor itself and the parts are roughly the same at (icdayroi.com):
- GP2Y1010AU0F PM2.5 sensor 102,000₫
- Arduino Uno R3 SMD CH380 with different USB chip 80,000₫
- LCD 1602 5V to show the measured data 30,000₫
Luftdaten.info
Measure the AQI at AISVN and publish the data. This is the map with our data: https://maps.luftdaten.info/#12/10.7422/106.7044
Database
Our Sensors:
- 12779556 Outdoor sensor in Nha Be at the campus of the AISVN with DHT22
- 416796 Second sensor at AISVN, indoor in front of 407B as display - Micro NodeMCU 16pin, display, DHT22
- 1129419 Outdoor sensor in Quận 7, at Nội khu Hưng Phước 1, Tân Phong, Hồ Chí Minh, Vietnam with DHT22
- 8808591 Nha Be indoor with Nova SDS011 and DHT22, NodeMCU wide
- 3633371 NodeMCU micro 16pin 1602 DHT22
- 416796 NodeMCU narrow 30pin
- 4872940 NodeMCU narrow 30pin
- 13455399 NodeMCU on Arduino board without sensor
The measurements of the last year(s) are stored in the database as zip filed. Further project: import (automatically?) into a sqlite database and analyze/visualize with jupyter.
Sensor list
| PM2.5 and PM10 | Temp./Humidity | Details | |
|---|---|---|---|
| Nha Be outdoor | 12779556 | 12779556 | Outdoor since 2019 |
| AISVN indoor | 8808591 | 8808591 | Indoor since 2019 |
| Phy My Hung | 1129419 | 1129419 | Outdoor since 2018 |
| Phy My Hung | 4872940 | Indoor since 2020 |
Video
Here is the link.