Hi friends and supporters!
Woo-hoo! We’re in the final stages of building Awair’s main board where all the sensors, processors, and important electronic components reside. We’ve designed Awair so that it can accurately measure the quality of the air in your area on a consistent basis. In this update, I wanted to share a little bit about how we’ve achieved this through numerous design and engineering challenges. The indoor environment conditions we’re exposed to everyday at home, at work, and in the gym change as they’re affected by always-changing variables such as outdoor air quality, weather, number of occupants and variety of activities happening indoors, and so on.
Can we just place sensors wherever it works? Absolutely not!
Sensor location within the box is critical for accurate and consistent readings. Every electronic component emits some amount of heat when they operate. In our case, sensors that measure VOCs (Volatile Organic Compounds) and carbon dioxide (CO2) emitted more heat than we anticipated and this forced us to change part of our design of the board, especially the location of temperature sensor. Ah, how we love our endless design and engineering challenges!
So we got to work. We placed 8 temperature probes across the box to better understand the temperature distribution within it.
The results were fascinating. As you can see below graph, temperature probes in locations #3 (in darker green) and #7 (in lighter blue) were least affected by the heat generated by other sensors and components compared to ambient temperature (in lighter green, bottom graph).
Learning from this experiment was one of the few changes we’ve incorporated into the next version of main board design. The final version of the board with all the new specifications, which we expect to be production ready, is coming out in couple weeks. We’ll keep you posted.
Until next time. Stay well, my friends!