1. Performed by: Alon Berger, Maor Itzhak Instructor: Adi Hanuka Cooperated with: HaEmek Medical Center המעבדה למערכות ספרתיות מהירות High speed digital systems laboratory הטכניון - מכון טכנולוגי לישראל הפקולטה להנדסת חשמל Technion - Israel institute of technology department of Electrical Engineering דו ” ח סיכום פרויקט ( חלק א ') Subject: Eyelid Motion Monitor סמסטר חורף תשע " ד 1

2. Abstract המעבדה למערכות ספרתיות מהירות High speed digital systems laboratory 2 A real-time prototype system for monitoring eyelid motion. The system consists of a tiny magnet located on the upper eyelid, a specially designed hardware system for real-time signal acquisition and computer software for real-time and off-line mode analysis. Eyelid movement is one of the visual behaviors reflecting a person’s medical issues. The system should allow characterizing various bio- behaviors that typically imply one's medical issues. The project focused on the signal analysis section of the system: Studying the signal at each point throughout the system, and defining the expected signal for various blink patterns, on each output of the system’s 8 sensors.

3. System description המעבדה למערכות ספרתיות מהירות High speed digital systems laboratory 3 The clinical procedure consists of a doctor gluing tiny magnets on the patient’s eyelids, and then placing the device on the patient, after which a short film will be shown to him. During the 10 minutes screening, data is collected by the device. The doctor transfers the data to a computer, where the dedicated software analyzes the results and displays them on screen for the doctor’s review. The magnets placed on the upper eyelids create magnetic field in space, which varies upon eyelid movement (blink). 4 Hall sensors placed on an analog circuit detect the magnetic field as a hall voltage builds-up. The Hall voltage is pre-amped, then sent to a digital circuit. Measurements are sampled and either stored on micro-SD memory (offline mode) or sent directly via USB to a PC (real-time mode).

4. Specification המעבדה למערכות ספרתיות מהירות High speed digital systems laboratory Hardware Power supply – creates 5v power supply for both digital and analog blocks, out of 3.7v battery, and recharges the battery Analog module – 8 Hall Effect sensors (4 on each eye), AC amplifier and a BPF. Digital module – A/D and SD memory card to store measurements, USB port to communicate with a PC Software "Eyelid device embedded software" utilizes LEDs, buzzer to indicate the state of the device, control buttons & I/O changes (USB, SD). It executes device commands via USB 2.0 port and SD. "Eyelid Pro" is aimed to supply ophthalmologists with tools to analyze, diagnose and document patients' eyelid movement. 4

5. System Block Diagram המעבדה למערכות ספרתיות מהירות High speed digital systems laboratory 5