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 Characterization report: Optical Simulation System for Brain Waves Detection & Measurements Presenters: Alterman Igal : Minkin Dmitry: Supervised by: Broodney Hen. Winter Semester

SHORT DESCRIPTION Our project deals with measuring eye vision of the patient without the necessity of his cooperation. A patient is receiving optical stimulation and his brain waves are being collected by Sampling card (Brain wave collector device). While stimulation, our system generates a signal to synchronize between stimulation moment and Sampling card.

SYNCHRONIZER

PROTOTYPES This project has already two prototypes. The first prototype was software oriented. Video 1 LPT Patient ’ s display. Video 2 Operator ’ s display. Synchronized pulse to brain wave collector. (Video 1 and Video 2 are two outputs of the same video card). Video Card PROTOTYPE 1

“Raping the computer”. Extra computer - extra cost and redundant complexity. PROBLEMS

The second prototype is generally hardware oriented. Synchronized pulse to brain wave collector device. Pulse Sync. Screen switch Patient ’ s Display Operator ’ s Display PROTOTYPE 2 Video Card Video 1Video 2

The operator and the patient can not work simultaneously. Geometrical Complexity. At this point we can define the main goals of our project: PROBLEMS

GOALS To integrate these two prototypes in order to take advantage of the best features of both. Add new features to the system (width and length of the signal). To use a single computer for sharing all tasks: Sample card, video card and pulse synchronizer. Avoid previous projects’ problems.

POSSIBLE SOLUTIONS We suggest the following: taking from each prototype its best components and add new features of our own: Software prototype. Hardware prototype OUR SYSTEM Adding video splitter or another video card. New features for controlling pulse synchronizer. GUI and Software for controlling stimulation. Pulse synchronizer

BLOCK DIAGRAM Video Card 2 Sampling system Video Card 1 Operator Display step 1 pic 2 Pulse Sync. Multiplexer Stimulation Video Splitter

TECHNICAL SPECIFICATIONS 21 inch monitor Angle resolution of line: 5 minutes in distance of 2 meter. Double output Video Card. Video splitter. Pulse synchronizer with synchronize resolution: at most 1mSec.. Brain wave collector device with appropriate pc-card.

SCHEDULE : Studying prototypes’ documentations : Studying prototypes’ documentations : Studying Video card and sampler card specifications : Studying Video card and sampler card specifications : Looking for video splitter or alternative device (such as another video card) : Looking for video splitter or alternative device (such as another video card) : Writing encoding program for pulse synchronizer : Writing encoding program for pulse synchronizer : Correctness simulation of encoding problem : Correctness simulation of encoding problem : Changing VHDL code of pulse synchronizer for decoding and execution of the commands from encoding program : Changing VHDL code of pulse synchronizer for decoding and execution of the commands from encoding program : Correctness simulation of VHDL code : Correctness simulation of VHDL code : Final improvements and testing of the whole integrated system : Final improvements and testing of the whole integrated system.