Portable Oxygen Concentrator Prototype

September 2017 - December 2017

I designed, built, and programmed a portable oxygen concentrator prototype for VivaSpire Inc to serve as both a working prototype of their flagship product, as well as to run automated tests on device performance and efficiency. It was capable of running the equivalent of 3 portable oxygen concentrators simultaneously, which is why it is larger than what would eventually be adopted into the final product. I designed all of the electrical and mechanical subsystems myself, and wrote the code collaboratively with my supervisor. My design produced 10x more oxygen than the previous proof-of-concept.

Manufactured hermetically sealed chambers with CNC milled and laser cut components. Used SolidWorks and AutoCAD for designing.
Sourced components to meet empirically determined requirements, such as the solenoid valves in this image.

Designed PCB with over 20 sensors on board, including thermocouples, pressure, current, flow rate, and oxygen level sensors. Incorporated signal amplifying/conditioning circuitry where required.
I wrote the code in Arduino and C++. Due to the limitations of the µC, minimizing memory use was imperative.

I designed the PCB using EAGLE and KiCad, paying particular attention to signal integrity and power consumption. The board was designed to fit snugly into an Arudino Mega for controls and user I/O, similarly to a shield.

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