Authentication System based on Texas Instruments DSP
The TI DSP Challenge is a unversity design contest based on TI DSP chips.
We accepted
the Challenge. A team of UMass Student Engineers consisting of Adam
Lederman, Richard DeWilde, Eric Lowe, Travis Sawyer, and John Thomson,
decided to pursue this unique contest.
Our goal is to build an Authentication System - a small device
that would control entry to buildings and rooms by checking the voice
print of every individual who desired access. Any person that did not
match the stored voice print would not be allowed access.
The Plan of Attack
- Complete all paperwork (this was a MAJOR step).
- Obtain a design kit (TMS320C5x proto board).
- Develop the necessary hardware interface.
- Develop the back-end voice processing software.
- Put it all together!
Current Status
The DSP Project is proceeding very well. We are working on the hardware
portion, and trying to develop some sort of "reckoning" with the device. We
had some difficulty initializing the device at first. The clock was
cycling, and the appropriate Vcc and ground signals were present, but nothing
seemed to work. Alas, it was the initialization routine that needed some
work.
The TMS320 has a series of steps that need to be followed in order for it
to be properly initialized:
- The TMS320C50 Timer;
- The Serial Port;
- The Analog Interface Circuit (AIC).
Texas Instruments has the details on
how to initialize
it.
News Flash!
December, 1995
It seems as if we were premature in our judgement - the problem with
initializing the board actually came from a component failure! We are
anxiously awaiting a new board to be delivered from TI.
What's Next?
Now that we have that part down, we need to hookup the additional
hardware. The parts that are needed are:
- A microphone for input;
- A keypad for input;
- An alphanumeric display for output;
- An RS-232 connection for a laptop to update the internal memory.
Well, that's about it! For other interesting information on TI and its
DSP Chips, visit Texas Instruments!