Apparatus and method for multipoint detection in power-over-ethernet detection mode

A measurement and digital acquisition system, comprising:

• a Power Source Equipment (PSE) controller configured to sample time division multiplexed measurements corresponding to a plurality of powered device (PD) ports over a plurality of sampling periods;
• a finite state machine (FSM) configured to store the time divsion multiplexed measurements for each sampling period from among the plurality of sampling periods;
• a data acquisition module configured to integrate the stored time division multiplexed measurements over the plurality of sampling periods to provide integrated measurements;
• and
• a microcontroller configured to temperature compensate the integrated measurements utilizing a temperature derived from each of the plurality of PD ports.

In a measurement and digital acquisition system, a method comprising:

• sampling, by a Power Source Equipment (PSE) controller, a time division multiplexed measurement of current, voltage, and temperature corresponding to a plurality of powered device (PD) ports over a first plurality of sampling periods;
• storing, by the PSE controller, the sampled multiplexed measurement of the current, the voltage, and the temperature for each sampling period from among the plurality of sampling periods;
• integrating, by the PSE controller, the stored multiplexed measurement of the current, the voltage, and the temperature over the first plurality of sampling periods to provide integrated measurements;
• temperature compensating, by the PSE controller, the integrated measurements utilizing a temperature derived from each of the plurality of PD ports;
• and
• integrating, by the PSE controller, the temperature compensated integrated measurements over a second plurality of sampling periods to remove noise from the current, voltage, and temperature measurements.