Georgi M. MITEV Bulgarian academy of sciences

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Presentation transcript:

Georgi M. MITEV Bulgarian academy of sciences LED driver design Georgi M. MITEV Bulgarian academy of sciences 20.04.2016 Baby MIND Collaboration Meeting #1

Initial LED driver design and use Single channel design Onboard LED Adapted to work on external LED Side effects RS-232 interface Manual control and mode display MCU LED driver amplitude timing 20.04.2016 Baby MIND Collaboration Meeting #1

Pulse Shape 200 ns pulse 50 ns pulse 200 ns pulse, fed to LEDs over 2m coax 50 ns pulse, fed to LEDs over 2m coax 20.04.2016 Baby MIND Collaboration Meeting #1

LED driver upgrade proposition Modular system with common pulse timing Shorter pulse length Better pulse shape Multiple wavelengths Separate diode amplitude control Oscilloscope Optical Pulse Control unit LED tube + optics 3- channel amplitude control unit Optical fiber bundle . . . . . Amplitude control bus I2C Onboard USB & WiFi to RS-232 bridges Master timing control unit timing 20.04.2016 Baby MIND Collaboration Meeting #1

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