A data collision detection device that includes a means for de-modulating
at least one carrier signal corresponding to a received modulated
subcarrier signal from at least one data transmitter to recover the
subcarrier signal from the carrier signal. A microcontroller is
operatively connected with the means for recovering a subcarrier signal.
The microcontroller includes a means for decoding a recovered subcarrier
signal. The means for decoding the recovered subcarrier signal is capable
of interpreting signal transitions in the recovered subcarrier signal,
and is capable of detecting data collisions in the recovered subcarrier
signal when in the presence of a plurality of modulated subcarrier
signals.