Air Quality Monitoring Device
Remote Air Quality Monitoring
This air quality monitoring device was developed as an independent project for use in the College of the Atlantic research involving the renovation of homes in rural Maine and the subsequent changes in air quality. A set of ten devices was developed, each of which contain an Arduino R4 Wifi, an MQ7 CO sensor, and an SEN55 sensor capable of temperature, humidity, PM, NO, and VOC readings to form a device capable of providing accurate and reliable air quality metrics. Additionally, the Arduino Cloud service was used to record and display these values over a Wifi connection for the user, regardless of location.
Additional Info
Original Device Requirements
This device was created as an extension of a previous Northeastern University Capstone Project that was incomplete and did not necessarily meet the requirements for the COA project. After taking over this project, I was tasked with the job of modifying the existing plans to fit these needs. Here is an outline of these requirements and the state of the original Capstone project.
COA Wants/Needs (<$100)
Temperature
Humidity
PM (2.5, 10.0)
VOC
CO (want)
CO2 (want)
Capstone Device Capabilities ($568.74)
PM (2.5, 10.0)
Radon
SO2
NO2
VOC
CO
CO2
Capstone Device Drawbacks
Total cost of $568.74, greater than allotted budget
Inability for sensors to function concurrently
Inability to report data simultaneously
Lack of scalability for production
Overall size at 9x6x6 inches
Developed Device
Developed in just two months while working on the project throughout a semester, this device was generated with the sensing capabilities agreed upon by the COA, at a price below their allotted budget. This device was a great improvement to the previous Capstone project, which had sensors unable to function concurrently, an inability to report data simultaneously, a lack of scalability, a large footprint, the lack of core sensing capabilities, and most importantly a cost of $568.74 ea.
COA Wants/Needs (<$100)
Temperature
Humidity
PM (2.5, 10.0)
VOC
CO (want)
CO2 (want)
My Device Capabilities ($79.68)
Temperature
Humidity
PM (1.0, 2.5, 4.0, 10.0)
VOC
NO
CO
My Device Features/Improvements
Total cost of $79.68 ea.
Sensors function concurrently and combined sensors improve efficiency
Data reports simultaneously to the cloud
1 year data retention and historic data download
Ability to push updates over cloud service
Ease of assembly and replication; scalability
Overall size at 5x2.25x2.5 inches
