Real time self-adjusting calibration algorithm
First Claim
1. A method for verifying the integrity of sensor data comprising:
- receiving a first data value from the sensor having a first parameter that exceeds a first threshold value;
determining that the first parameter relating to the first data value exceeds the first threshold value;
continuing receipt of data from the sensor after determining that the first parameter relating to the first data value exceeds the first threshold value;
receiving a second data value from the sensor, after determining the first parameter relating to the first data value exceeds the first threshold value, the second data value having a first parameter that exceeds the first threshold value;
determining that the first parameter relating to the second data value exceeds the first threshold value after determining a first parameter relating to the first data value exceeds the first threshold; and
terminating receipt of data from the sensor in response to determining that the first parameters relating to the first and the second data values exceed the first threshold value.
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Accused Products
Abstract
A method of calibrating glucose monitor data includes collecting the glucose monitor data over a period of time at predetermined intervals. It also includes obtaining at least two reference glucose values from a reference source that temporally correspond with the glucose monitor data obtained at the predetermined intervals. Also included is calculating the calibration characteristics using the reference glucose values and corresponding glucose monitor data to regress the obtained glucose monitor data. And, calibrating the obtained glucose monitor data using the calibration characteristics is included. In preferred embodiments, the reference source is a blood glucose meter, and the at least two reference glucose values are obtained from blood tests. In additional embodiments, calculation of the calibration characteristics includes linear regression and, in particular embodiments, least squares linear regression. Alternatively, calculation of the calibration characteristics includes non-linear regression. Data integrity may be verified and the data may be filtered.
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Citations
53 Claims
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1. A method for verifying the integrity of sensor data comprising:
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receiving a first data value from the sensor having a first parameter that exceeds a first threshold value; determining that the first parameter relating to the first data value exceeds the first threshold value; continuing receipt of data from the sensor after determining that the first parameter relating to the first data value exceeds the first threshold value; receiving a second data value from the sensor, after determining the first parameter relating to the first data value exceeds the first threshold value, the second data value having a first parameter that exceeds the first threshold value; determining that the first parameter relating to the second data value exceeds the first threshold value after determining a first parameter relating to the first data value exceeds the first threshold; and terminating receipt of data from the sensor in response to determining that the first parameters relating to the first and the second data values exceed the first threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for calibrating a sensor comprising:
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receiving a plurality of data values from the sensor; determining the reliability of each data value of the plurality of data values; discarding further data values received after receiving at least two data values within a predefined period of time that are determined to be unreliable; filtering the plurality of data values that have not been discarded and that are received before receipt of the at least two data values within the predefined period of time that are determined to be unreliable; and adjusting an output of the sensor using the filtered data values. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. An apparatus for verifying the integrity of sensor data comprising:
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means for receiving a first data value from the sensor having a first parameter that exceeds a first threshold value; means for determining that the first parameter relating to the first data value exceeds the first threshold value; means for continuing receipt of data from the sensor after determining that the first parameter relating to the first data value exceeds the first threshold value; means for receiving a second data value from the sensor, after determining the first parameter relating to the first data value exceeds the first threshold value, the second data value having a first parameter that exceeds the first threshold value; means for determining that the first parameter relating to the second data value exceeds the first threshold value after determining a first parameter relating to the first data value exceeds the first threshold; and means for terminating receipt of data from the sensor in response to determining that the first parameters relating to the first and the second data values exceed the first threshold value. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48)
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49. An apparatus for calibrating a sensor comprising:
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means for receiving a plurality of data values from the sensor; means for determining the reliability of each data value of the plurality of data values; means for discarding further data values received after receiving at least two data values within a predefined period of time that are determined to be unreliable; means for filtering the plurality of data values that have not been discarded and that are received before receipt of the at least two data values within the predefined period of time that are determined to be unreliable; and adjusting an output of the sensor using the filtered data values. - View Dependent Claims (50, 51, 52, 53)
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Specification