Patent ID: 11957464
Assignee: MEDTRONIC MINIMED, INC.
Field: Measurement (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
1. A method for calibrating one or more sensor parameters of a glucose sensor used for measuring a level of glucose in a body of a user, the glucose sensor including physical sensor electronics, a microcontroller, and a working electrode, the method comprising:
periodically measuring, by the physical sensor electronics, electrode current signal (Isig) values for the working electrode;
generating, by the microcontroller, Electrochemical Impedance Spectroscopy (EIS) parameter values for the working electrode based on an EIS procedure;
measuring, by the physical sensor electronics, Vcntr values of counter voltage for the glucose sensor;
based on the Isig values, the EIS parameter values, the Vcntr values, and a plurality of sensor glucose (SG) predictive models, calculating, by the microcontroller, a respective SG value for each of the SG predictive models;
applying a factory calibration factor, by the microcontroller, to fuse the respective SG values to calculate a single, fused SG value;
performing, by the microcontroller, error detection diagnostics on the single, fused SG value to determine whether a correctable error exists in the single, fused SG value;
in a case where the error detection diagnostics determine that a correctable error exists, correcting, by the microcontroller, the correctable error in the single, fused SG value to generate a corrected, single, fused SG value; and
providing the corrected, single, fused SG value.