IoT Air-Quality

Please note: This is a Citizen Science project for demonstration purposes only, as the equipment is not calibrated.

As part of a lead up to new IoT programs, information sessions and workshops. We are deploying different sensors around PAE to demonstrate the many useful ways IoT can be used. Want to know more about IoT in general click here.

If you would like to be informed of future information sessions or workshops or get directly involved as a volunteer or you are a community group with a special interest in deploying sensors, please contact:
Robert Hart, STEM Learning & Programs Officer,
phone 8405 6051 email robert.hart@cityofpae.sa.gov.au

The RAK7204 is an indoor environmental monitoring station. This sensor, can measure changes in temperature, humidity, gas pressure and provide an indoor air quality index.

The graphs below, are an example of real data from air-quality sensors at the City of libraries. These sensors connected to the LoRaWAN Network and data is sent wirelessly using the Australian public class licence radio spectrum on (915Mhz) which is received by LoRaWAN Gateways dotted about Adelaide and the world.

LoRa Devices use a specially encrypted machine code that can be accessed and decrypted over the internet by registered users of The Things Network.

This can then be used by other software applications, in our case, an application called NodeRED to process the data into actions, messages or to stored it in a database for later use. The database we are using, in this case, is InFluxDB which can be used by a website application called Grafana to display data in a more human-friendly graph on a website.

The flow diagram below is a quick overview of how data flow from the sensor to a graph on Grafana.