USB/Relè Electronic
During my degree I have project and construct a electronic board which comunicate with computer using USB channel for open and close high voltage lines. The system it’s composed by 5 high power relè for engage high voltage loads and an analog line used like comparator for remove alimentation to relè (power stop) in case of problems.
The hardware comunicate to computer with USB line using FTDI chip DLL and imported in my C++ program. This program use the library for configure, send and receive data to board.
The board excute commands on power section and colloquiate with PC for allarms and in case of echo reply activated.
The USB controller it’s the FT232BM chip which translate the USB protocol to more simple RS232 and on board I have used the ATMEGA8 microcontroller unit for translate commands and operate on relè. All relè are attached to Atmega using NPN transistor for current adjustment.
