Monitoring a receiver for strip replacement

1. A computer-implemented method of monitoring a receiver, wherein the receiver comprises a disposable strip and a reusable control module removably connectable to the disposable strip, the disposable strip comprising an adhesive surface for attachment to a body of a user, the disposable strip comprising an electrode configured to be situated against the body of the user, the disposable strip comprising a power source, the reusable control module lacking its own power source and comprising a voltage sensor and a temperature sensor, the method comprising:

powering on the reusable control module when the reusable control module is connected to the disposable strip;

detecting, by the voltage sensor, a voltage measurement of the power source when the reusable control module is connected to the disposable power strip;

detecting, by the temperature sensor, a temperature measurement of the disposables strip when the reusable control module is connected to the disposable strip;

receiving, by a device that is communicably couplable to the reusable control module of the receiver, the voltage measurement of the power source from the voltage sensor of the reusable control module;

receiving, by the device, the temperature measurement of the disposable strip from the temperature sensor of the reusable control module;

normalizing, by the device, the voltage measurement according to the temperature measurement to generate a normalized voltage measurement;

determining, by the device, whether the normalized voltage measurement falls below a voltage threshold;

counting, by the device, a consecutive number of normalized voltage measurements that fall below the voltage threshold;

calculating, by the device, an aggregate voltage according to whether the consecutive number of normalized voltage measurements exceeds a threshold;

determining, by the device, whether the calculated aggregate voltage falls below an aggregate voltage threshold; and

providing, by the device, an alert according to whether the calculated aggregate voltage falls below the aggregate voltage threshold.

2. The computer-implemented method of claim 1 , wherein normalizing the voltage measurement according to the temperature measurement comprises:

applying, by the device, a scaling factor corresponding to the temperature measurement to the voltage measurement.

3. The computer-implemented method of claim 1 , wherein normalizing the voltage measurement according to the temperature measurement comprises:

normalizing, by the device, the voltage measurement to a nominal temperature associated with one of a plurality of characterized battery voltage curves to which the voltage measurement and the temperature measurement corresponds.

4. The computer-implemented method of claim 1 , wherein computing the aggregate voltage comprises:

plotting, by the device, a curve of the voltage measurement over time; and

computing, by the device, an area under the curve for a time interval.

5. The computer-implemented method of claim 1 , wherein providing the alert comprises displaying, by the device, a push notification.

6. The computer-implemented method of claim 1 , wherein the device is communicably connectable to the receiver via a Bluetooth Low Energy connection.

7. The computer-implemented method of claim 1 , wherein the receiver is configured to receive a signal from an ingestible event marker conductively transmitted through the body of the user after ingestion of the ingestible event marker.

8. The computer-implemented method of claim 1 , further comprising:

receiving, by the device, a plurality of voltage measurements at a first rate during a time period; and

receiving, by the device, the plurality of voltage measurements at a second rate after the time period.

9. The computer-implemented method of claim 8 , wherein the time period begins when the reusable control module is connected to the disposable strip.

10. The computer-implemented method of claim 8 , wherein the first rate is greater than the second rate.

11. A system comprising:

a receiver comprising:

a disposable strip; and

a reusable control module removably connectable to the disposable strip;

the disposable strip comprising:

an adhesive surface for attachment to a body of a user;

an electrode configured to be situated against the body of the user; and

a power source;

the reusable control module lacking its own power source and configured to be powered on when connected to the disposable strip;

the reusable control module comprising:

a voltage sensor configured to detect a voltage measurement of the power source when the reusable control module is connected to the disposable strip; and

a temperature sensor configured to detect a temperature measurement of the disposable strip when the reusable control module is connected to the disposable strip; and

a device communicably connectable to the receiver and comprising:

a processor; and

a memory coupled to the processor, the memory storing instructions that, when executed by the processor, cause the device to:

receive the voltage measurement of the power source from the voltage sensor of the reusable control module;

receive the temperature measurement of the disposable strip from the temperature sensor of the reusable control module;

normalize the voltage measurement according to the temperature measurement to generate a normalized voltage measurement;

determine whether the normalized voltage measurement falls below a voltage threshold;

count a consecutive number of normalized voltage measurements that fall below the voltage threshold;

calculate an aggregate voltage according to whether the consecutive number of normalized voltage measurements exceeds a threshold;

determine whether the calculated aggregate voltage falls below an aggregate voltage threshold; and

provide an alert according to whether the calculated aggregate voltage falls below the aggregate voltage threshold.

12. The system of claim 11 , wherein the instructions, when executed by the processor, cause the device to normalize the voltage measurement by causing the device to:

apply a scaling factor corresponding to the temperature measurement to the voltage measurement.

13. The system of claim 11 , wherein the instructions, when executed by the processor, cause the device to normalize the voltage measurement by causing the device to:

normalize the voltage measurement to a nominal temperature associated with one of a plurality of characterized battery voltage curves to which the voltage measurement and the temperature measurement corresponds.

14. The system of claim 11 , wherein the instructions, when executed by the processor, cause the device to compute the aggregate voltage by causing the device to:

plot a curve of the voltage measurement over time; and

compute an area under the curve for a time interval.

15. The system of claim 11 , wherein providing the alert comprises displaying, by the device, a push notification.

16. The system of claim 11 , wherein the device is communicably connectable to the receiver via a Bluetooth Low Energy connection.

17. The system of claim 11 , wherein the receiver is configured to receive a signal from an ingestible event marker conductively transmitted through the body of the user after ingestion of the ingestible event marker.

18. The system of claim 11 , wherein the instructions, when executed by the processor, further cause the device to:

receive a plurality of voltage measurements at a first rate during a time period; and

receive the plurality of voltage measurements at a second rate after the time period.

19. The system of claim 18 , wherein the time period begins when the reusable control module is connected to the disposable strip.

20. The system of claim 18 , wherein the first rate is greater than the second rate.