System and methods for processing analyte sensor data

  • US 8,700,117 B2
  • Filed: 12/08/2009
  • Issued: 04/15/2014
  • Est. Priority Date: 08/01/2003
  • Status: Active Grant
First Claim
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1. A method for calibrating an analyte sensor, the method comprising:

  • receiving sensor data from an analyte sensor, wherein the sensor data comprises one or more sensor data points;

    receiving reference data from a reference analyte monitor, wherein the reference data comprises a reference data point;

    predicting an estimated sensor data point from the one or more sensor data points for a time corresponding to a time stamp of the reference data point;

    matching the reference data point to the predicted, estimated sensor data point to compensate for a time lag of the one or more sensor data points relative to the reference data point;

    forming a calibration set comprising the reference data point and the predicted, estimated sensor data point;

    creating a conversion function based at least in part on the calibration set; and

    converting, using a processor, the sensor data into calibrated data using the conversion function, wherein the sensor data points are smoothed using a data smoothing filter, and wherein the time lag compensation is based at least in part on a time delay introduced by the data smoothing filter.

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