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Method and device for calibrating and updating a power model

  • US 10,372,842 B2
  • Filed: 03/14/2013
  • Issued: 08/06/2019
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A method of updating a power model for a multi-state device, the method comprising:

  • receiving, at a processing device, a device state log comprising a time-based representation of states of the multi-state device for a first period of time;

    measuring, by a power meter, power consumed by the multi-state device for the first period of time and generating a digital representation of a power trace based on the measured power consumption;

    receiving by the processing device, the digital representation of the power trace;

    eroding, by the processing device, the device state log wherein the eroding comprises setting to zero a value of the representation for a duration of time of state transition at each state transition within the device state log, thereby producing an eroded device state log;

    smoothing, by the processing device, the power trace by applying a finite impulse response filter to the power trace;

    determining, by the processing device, energy consumption based on an area under the smoothed power trace for the first period of time in the eroded device state log;

    creating, by the processing device, an updated power model for the multi-state device based upon the energy consumption for the first period of time in the eroded device state log;

    storing, by the processing device, the updated power model in a non-transitory computer readable medium operably connected to the multi-state device; and

    using the updated power model to estimate energy consumption of the multi-state device.

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