 Oxygen Analyzer Team 7: Justin Akiyama, Andrew Do, Sapphire Lopez, Jay Patel, Marvin Patel, Nirav Shah

Background  Current Analysis Method  Using open flame to test oxygen concentration  Environmental Assumptions  Hospitals/clinics have adequate electrical supply  Hospital/clinic have wards/rooms for surgery, general care, intensive care  Hospital/clinic have at least one technician available for maintenance of device

Motivation THREE AREAS OF FOCAL IMPLEMENTATIONS  Safety: An open flame to test concentrated oxygen could potentially cause a powerful combustion.  Economy: Economic conditions of those in impoverished areas in Africa need an inexpensive yet simple method to test oxygen concentration.  Simplicity: Not all areas contain individuals with the knowledge and technical training to operate highly sophisticated devices.

Motivation Cont.  Need to maintain lifetime of accuracy  Threshold 90-95% oxygen is ideal  Increase oxygen gradient  Smaller alveoli = larger partial pressure of oxygen needed in lungs  Threshold varies according to age, development, and deterioration  Increases safety and confidence for medical personal. Diagram of newborn alveoli. 1)Underdeveloped vena cava. 2) Absence of pleuroperitoneal membrane

Goals  Fabricate and Mold Polymer Composite  Thickness  Substrate  Correlate intensity and wavelength of light emission to the concentration of oxygen  Algorithm design  Microprocessor programming  Optimize the lifespan of the polymer  Degradation rate  Set up testing environment  Build a working prototype  Determine output of 22% O 2 or 95% O 2 OBJECTIVE Develop An Oxygen Analyzer that is Accurate, Reliable, Durable, Easy to Use, and Easy to Manufacture

Milestones OCT – DEC Background and Market Research Brainstorming Ideas and Designs Applying for UROP Preliminary Sketches of Design JAN – MARCH Materials Purchase Fabricating and Molding Polymer Developing Preliminary Algorithm APR – JUN Verification and Validation of Algorithm and Design Construct Working Prototype Testing and Modification Manufacturing Validation Submit Design for EWH Design Competition Final Review and Symposium

Project Approach and Justification Fluorescent Polymer Composite  Cons:  The polymer needs to be replaced  Degradation of the polymer affects the read out  Pros:  Cheap  Easy to use  Easy to run  Accurate  No re-calibration needed  Small/Portable

Energetics

Emission Spectra

Device Design

Polymer Composite Spin Coat Method Mesh Method

Polymer Composite cont.  Polymer Composite Investigation  Thickness  Flow Contact  Repeatability  Durability

Electronics Color Sensor Ambient Light Sensor Tri-Color LED 3 x Green LEDs Microprocessor

Planned Future Work  Phase III  Calibration  Solidworks case  Rapid Prototyping  PCB Customization  Final Prototype