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ENG EK210: INTRODUCTION TO ENGINEERING DESIGN
Boston University
Department of Biomedical Engineering
Fall 2016
This course forms teams of students from varying engineering disciplines (computer, electrical, mechanical, and biomedical) in order to tackle a problem from concept to a finished prototype
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Our team was assigned to develop a drug preservation device that would preserve an epi-pen within it's functional range of temperature
OBJECTIVE
The stored medicine must lie within the range of 10°C to 30°C despite being exposed to external temperatures between -10°C to 50°C
It must be powered by a standard 12V car battery for 48 hours and must work off of the external battery for four to six hours
ENERGY
COST
The device must cost less than $400 to make
DIMENSIONS
It should fit inside a typical cup holder and should carry medicine containers measuring up to 20mm in diameter and 75mm in length
THERMOREGULATION
A phase-changing gel, 'Phase-22', fluctuates between solid and liquid states to provide proper insulation
A peltier device supplies
thermoelectric cooling when triggered by high temperatures
A cooper tube allows for seamless thermal conduction
PROTECTION
The casing was 3D-printed using
ABS-P430 Ivory at the Boston University Product Innovation Lab
DETECTION
The Arduino micro-controller and breadboard housed on the side of the device monitor temperature changes and trigger the according response needed to preserve the required range
NOTIFICATION
An LED notifies the user if the contents have been exposed to excessive temperatures for over one minute
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