# Title Team Members TA Documents Sponsor
25 LED and Spectroscopy System (for Detecting Aflatoxin in corn)
Foong Wong
Jiahui Chen
Noctis Z.
Channing Philbrick final_paper0.pdf
Introduction: (idea from Prof. Hart)
Aflatoxins is a toxic component in some grains. Based on its special physical property under LED, like the B-group aflatoxins exhibit blue fluorescence; the G-group exhibits yellow-green fluorescence under ultraviolet (UV) light, We would like to work on design a reproducible prototype LED and spectroscopy system which can detect the aflatoxins in corn kernel.
When a kernel is dropped into a tube, the first LED will be turned on, after the kernel emits fluorescence to the photodiode, the current through the diode will change, this signal will be detected, and the current data will be sent to the laptop. The current signal represents the light intensity. Then the first LED will be off and the second to the sixth LED will repeat this process.

Basic functions:
1. Printed circuit board:
A ‘start’ signal to start the cycle (turn on the first LED)
Balancing circuit for 6 LEDs
Interface with the Data Acquisition tool (DAQ) which can be connected to LabView
The DAQ can collect data (represents the light intensity) from the photodiodes to laptop

2. Graphic User Interface (LabView)
Auto on-off system for 6 LEDs based on timing: Each of the LEDs will be switched on one at a time. When the neighboring photodiode detects a kernel, the reading of the spectrometer is triggered for data collection.
Calibration Control: The brightness can be adjusted on the GUI.
Pulsing of LED: The frequency of the LEDs can be adjusted to a frequency needed.

Tools will be used for this project:
Spectroscope (glass tube, LEDs, detector), Eagle, microcontroller, Printed Circuit Board, LabView, Data Acquisition (DAQ), laptop

Environmental Sensing for Firefighters

Andri Teneqexhi, Lauren White, Hyun Yi

Environmental Sensing for Firefighters

Featured Project

Hyun Yi, Lauren White, and Andri Teneqexhi earned the Instructor's Award in the Fall of 2013 for their work on the Environmental Sensing for Firefighters.

"Engineering is all about solving real life problems and using the solutions to improve the lives of others. ECE 445 allows you to actually delve deeper into what this really means by providing students the chance to undergo the engineering design process. This requires taking all of the theoretical knowledge, lab experiences, and ultimately, everything that you have ever learned in life, and applying it to your project. Though, there is structure to the course and deadlines in place to measure your team's progress, the actual design, implementation, and success of your project is all determined by you. Unlike any other course that I have taken, I've gained an appreciation for the utilization and benefits of external resources, unforeseen scheduling delays, delegating tasks, and most importantly, teamwork. I consider ECE 445 to be a crash course into real life engineering and a guide to become a successful engineer." -- Lauren White