Methods and systems for early signal attenuation detection and processing
Provided are methods and apparatus for receiving sensor data from an analyte sensor of a sensor monitoring system, processing the received sensor data with time corresponding calibration data, outputting the processed sensor data, detecting one or more adverse conditions associated with the sensor monitoring system, disabling the output of the sensor data during the adverse condition time period, determining that the one or more detected adverse conditions is no longer present in the sensor monitoring system, retrieving the sensor data during the adverse condition time period, processing the retrieved sensor data during the adverse condition time period, and outputting the processed retrieved sensor data.
1. A glucose monitoring system, comprising:
(1) an on body unit configured to be positioned on a user's body, the on body unit comprising:
a glucose sensor, a portion of which is configured to be positioned under skin of the user, wherein the glucose sensor is configured to sample a biological fluid of the user and provide glucose related sensor data; and
a data processing and transmitter unit coupled with the glucose sensor, wherein the data processing and transmitter unit is configured to:
receive the glucose related sensor data from the glucose sensor;
process the glucose related sensor data to provide processed sensor data;
store, in memory of the data processing and transmitter unit during a time period associated with a failure mode condition, the glucose related sensor data, the processed sensor data, or both; and
transmit the processed sensor data over a Bluetooth wireless communication link; and
(2) a receiver unit, comprising:
a radio frequency receiver and an antenna configured to receive the processed sensor data transmitted by the data processing and transmitter unit over the Bluetooth wireless communication link;
a display configured to display a graphical representation of the processed sensor data; and
a processor coupled with memory of the receiver unit, wherein instructions stored in the memory of the receiver unit, when executed by the processor, cause the processor to:
detect the presence of the data processing and transmitter unit when the data processing and transmitter unit is within a range of the receiver unit;
establish the Bluetooth wireless communication link with the data processing and transmitter unit;
display a gap in the graphical representation of the processed sensor data, the gap correlating with the time period associated with the failure mode condition; and
display a graphical representation of the processed sensor data correlating with the time period associated with the failure mode condition after the failure mode condition has been corrected,
wherein the failure mode condition is detected by the data processing and transmitter unit.
2. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a sensor communication error.
3. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a signal error associated with the glucose sensor.
4. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a signal error associated with the data processing and transmitter unit.
5. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a signal error associated with the receiver unit.
6. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a system malfunction associated with the data processing and transmitter unit.
7. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a system malfunction associated with the receiver unit.
8. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a sensor dislodgement.
9. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises an inability of the receiver unit to display or output the graphical representation of the processed sensor data to the display.
10. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises an inability to calibrate the glucose sensor.
11. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a sensor instability condition.
12. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a calibration failure condition.
13. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a monitoring system failure condition.
14. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises an early signal attenuation condition of the glucose sensor.
15. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a sensor misposition error.
16. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a temperature measurement outside a predetermined range.
17. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises an analyte level exceeding a predetermined threshold.
18. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a rate of change of an analyte level exceeding a predetermined threshold.
19. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a signal error associated with reference data.
20. The glucose monitoring system of claim 1 , wherein the failure mode condition comprises a data unavailability condition.
21. The glucose monitoring system of claim 1 , wherein the instructions stored in the memory of the receiver unit, when executed by the processor, further cause the processor to display the graphical representation of the processed sensor data correlating with the time period associated with the failure condition immediately after the correction of the failure mode condition.
22. The glucose monitoring system of claim 1 , wherein the instructions stored in the memory of the receiver unit, when executed by the processor, further cause the processor to wait a predetermined period of time after the correction of the failure mode condition before displaying the graphical representation of the processed sensor data correlating with the time period associated with the failure condition.
23. The glucose monitoring system of claim 1 , wherein the data processing and transmitter unit is further configured to store time information associated with the failure mode condition.
24. The glucose monitoring system of claim 1 , wherein the graphical representation comprises a first axis having a time unit of measurement and a second axis having a glucose concentration unit of measurement.
25. The glucose monitoring system of claim 1 , wherein the on body unit comprises a single integrated housing, and wherein the glucose sensor and the data processing and transmitter unit are disposed within the single integrated housing.
26. The glucose monitoring system of claim 1 , wherein the receiver unit comprises a mobile phone.
27. The glucose monitoring system of claim 1 , wherein the data processing and transmitter unit is configured to modulate a carrier frequency by performing frequency shift keying.
28. The glucose monitoring system of claim 1 , wherein the time period associated with the failure mode condition comprises at least ten minutes.
29. The glucose monitoring system of claim 1 , wherein the graphical representation of the processed sensor data comprises a line graph, wherein the line graph comprises a first segment and a second segment, wherein an end of the first segment correlates with a time associated with a start of the failure mode condition, and wherein a beginning of the second segment correlates with a time associated with an end of the failure mode condition.
30. A glucose monitoring system, comprising:
(1) an on body unit configured to be positioned on a user's body, the on body unit comprising:
a glucose sensor, a portion of which is configured to be positioned under skin of the user, wherein the glucose sensor is configured to sample a biological fluid of the user and provide glucose related sensor data; and
a data processing and transmitter unit coupled with the glucose sensor, wherein the data processing and transmitter unit is configured to:
receive the glucose related sensor data from the glucose sensor;
process the glucose related sensor data to provide processed sensor data;
store, in memory of the data processing and transmitter unit during a time period associated with a failure mode condition, the glucose related sensor data, the processed sensor data, or both; and
transmit the processed sensor data over a Bluetooth wireless communication link; and
(2) a receiver unit, comprising:
a radio frequency receiver and an antenna configured to receive the processed sensor data transmitted by the data processing and transmitter unit over the Bluetooth wireless communication link;
a display configured to display a graphical representation of the processed sensor data; and
a processor coupled with memory of the receiver unit, wherein instructions stored in the memory of the receiver unit, when executed by the processor, cause the processor to:
detect the presence of the data processing and transmitter unit when the data processing and transmitter unit is within a range of the receiver unit;
establish the Bluetooth wireless communication link with the data processing and transmitter unit;
display a gap in the graphical representation of the processed sensor data, the gap correlating with the time period associated with the failure mode condition; and
display a graphical representation of the processed sensor data correlating with the time period associated with the failure mode condition after the failure mode condition has been corrected,
wherein the failure mode condition is detected by the receiver unit.