Device for Detection of Intra-abdominal Hemorrhage using Electrical Impedance Tomography
• Completely redesigned portable medical system intended to detect internal abdominal bleeding.
• Improved precision by 20dB, and speed more than tenfold, by redesigning analog and digital circuitry and layout.
• Reduced power consumption by 20% and designed multi-rail, low-noise power supply.
• Conducted pilot trial in patients to prove effectiveness of device and method.
• System detected modeled hemorrhage in less than two minutes with 98% sensitivity and 95% specificity.
• Analog subsystems included high-precision AC current source and voltmeter multiplexed to eight electrodes.
• Embedded digital system included D/A and A/D converters, DSP, and USB/Bluetooth connectivity.
• Added electrical isolation and other patient safety features to secure IRB approval for pilot trial.
• Used FEM to model and predict the effects of internal bleeding on the body's electrical transimpedance.
• Devised an image-processing algorithm to autonomously detect active hemorrhage based on FEM model.

Digital Cerebrospinal Fluid Manometer
• Led team of six students and coordinated with clinician specialists.
• Invented a handheld biomedical instrument that digitally measures pressure of the cerebrospinal fluid.
• Won the 2007 UF BME student design competition.

Electrocardiogram (ECG) Amplifier for Biomedical Engineering Students
• Created first hands-on laboratory project for biomedical engineering graduate students.
• Designed PCB and ordered lab kits constrained by budget.
• Instructed weeklong course.
• Received the NSF-funded I-Cubed Teaching Award.

Human Olfactometer Interface
• Designed handheld digital devices to collect data on the psychological perception of smells in human subjects.
• Embedded system included LCD display, USB interface, audio reinforcements, and push-buttons.
• Low power AVR system had robust state machine for reliable operation.
• Devices integrated with existing olfactometer system.
• Manufactured and assembled four identical units.
• Provided documentation and training.

DUSTY: Autonomous Vacuum Cleaner
• Designed autonomous robot that roamed while avoiding obstacles using ultrasound and IR sensors.
• Robot used dust sensor to concentrate cleaning effort on dirty areas, resumed roaming once area was cleaned.
• Student project for intelligent machine design course.