System and method for automatic calibration

• US 7,981,678 B2
• Filed: 05/29/2008
• Issued: 07/19/2011
• Est. Priority Date: 08/06/2007
• Status: Active Grant

• Current Assignee: Ascensia Diabetes Care Holdings AG (PHC Holdings Corporation)
• Original Assignee: Bayer Healthcare LLC (Bayer AG)
• Inventors: Holzer, Matthew, Reynolds, Jeffery S., Sun, Hoi-Cheong Steve, Wu, Mu
• Primary Examiner(s): Wallenhorst; Maureen M
• Application Number:
  US12/129,044
• Publication Number:
  US 20090042306A1
• Time in Patent Office: 1,146 Days
• Field of Search: 436/8, 436/46, 436/63, 436/95, 436/149, 436/150, 435/14, 422/68.1, 422/82.01, 422/82.02, 73/10.1, 73/10.2, 702/116, 702/122
• US Class Current: 436/8
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number
• CPC Class Codes: G01N 35/00 Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
• CPC Class Codes: Y10T 436/10 Composition for standardization, calibration, simulation, stabilization, preparation or preservation; processes of use in preparation for chemical testing
• CPC Class Codes: Y10T 436/112499 with sample on test slide

Abstract

A device includes a sensor array and a processor is automatically calibrated. The sensor array collects data from a pattern using at least one of a capacitive measurement and a radio frequency measurement. The pattern is included on a calibration storage device. The processor receives the data from the sensor array and calibrates the device in accordance with the data.

Claims

1. A device, comprising:

a sensor array collecting data from a pattern based on a capacitive measurement, the pattern being included on a calibration storage device, the pattern including a plurality of variations of at least one of height, width, and contrast; and

a processor receiving the data from the sensor array and calibrating the device in accordance with the data.

2. The device of claim 1, wherein the calibrating includes preparing the device to perform a functionality in conjunction with the calibration storage device.

3. The device of claim 2, wherein the functionality is a diagnostic test on a sample received by the calibration storage device.

4. The device of claim 3, wherein the diagnostic test includes testing an analyte of the sample, the calibration storage device being an analyte receiving strip.

5. The device of claim 1, further comprising:

a port receiving and aligning the calibration storage device for the sensor array to collect the data from the pattern.

6. The device of claim 1, wherein the sensor array is external to a housing of the device and is coupled to the device via a connector.

7. The device of claim 1, wherein the data includes command data, the command data indicating at least one command to be executed by the device.

8. The device of claim 1, wherein the pattern is at least one of a one-dimensional and two-dimensional sequence.

9. The device of claim 8, wherein the pattern is a two-dimensional sequence and wherein the sensor array is one-dimensional, the sensor array reads the pattern as it is slid past.

10. The device of claim 1, wherein the sensor array includes a plurality of sense pads and the pattern includes at least one coding feature so that, when in a proper orientation, the at least one coding feature associates with at least one of the plurality of sense pads.

11. The device of claim 10, wherein a sense pad associated with one of the at least one coding feature creates a first capacitance while a sense pad unassociated with one of the at least one coding feature creates a second capacitance, so that the capacitive measurement creates an ordered list of values from each of the plurality of sense pads, each value corresponding to one of the first capacitance and the second capacitance.

12. The device of claim 10, wherein the plurality of sense pads are disposed on an existing printed circuit board of the device.

13. The device of claim 10, further comprising:

a heterogeneous dielectric cover disposed over the plurality of sense pads, the heterogeneous dielectric cover patterned to enhance data recovery by concentrating electric field lines.

14. A method, comprising:

reading a pattern using a capacitive measurement, the pattern being included on a calibration storage device, the pattern includes a plurality of variations of at least one of height, width, and contrast;

determining data included in the pattern; and

calibrating a device in accordance with the data, wherein the calibrating includes preparing the device to perform a functionality in conjunction with the calibration storage device.

15. The method of claim 14, wherein the functionality is a diagnostic test on a sample received by the calibration storage device.

16. The method of claim 14, further comprising:

executing commands on the device, the commands included in the data of the pattern.

17. The method of claim 14, wherein the pattern is at least one of a one-dimensional and two-dimensional sequence.

18. The method of claim 17, further comprising:

wherein the pattern is the two-dimensional sequence, and further including sliding the two-dimensional sequence past a one-dimensional sensor array to read the two-dimensional sequence.

19. The method of claim 14, further comprising:

wherein the pattern is read by a sensor array, the sensor array including a plurality of sense pads and the pattern including at least one coding feature, associating each of the at least one coding feature to one of the plurality of sense pads.

20. The method of claim 19, further comprising:

when a sense pad associated with one of the at least one coding feature creates a first capacitance while a sense pad unassociated with one of the at least one coding feature creates a second capacitance, representing the capacitive measurement as an ordered list of values from each of the plurality of sense pads, each value corresponding to one of the first capacitance and the second capacitance.

21. The method of claim 19, wherein the plurality of sense pads are disposed on an existing printed circuit board of the device.

22. The method of claim 19, further comprising:

patterning a heterogeneous dielectric cover disposed over the plurality of sense pads to concentrate electric field lines, thereby enhancing data recovery.

23. A method, comprising:

receiving, by an analyte meter, an analyte receiving strip;

reading a pattern disposed on the analyte receiving strip using a capacitive measurement, the pattern including a plurality of variations of at least one of height, width, and contrast;

determining calibration data included in the pattern;

calibrating the analyte meter in accordance with the calibration data;

receiving an analyte on the analyte receiving strip;

analyzing the analyte using the calibrated analyte meter; and

displaying results of the analysis.

24. The method of claim 23, wherein the calibration data includes at least one of test parameters, a date of manufacture of the analyte receiving strip, a whole blood parameter, a plasma parameter, an anti-counterfeiting code, commercial data, regional identification data, and software control data.

25. A method of determining an analyte concentration of a fluid sample, the method comprising:

providing a test strip including a pattern disposed thereon and a channel formed therein, the pattern including a plurality of variations of at least one of height, width, and contrast;

providing an analyte meter including a port;

placing the test strip into the port of the analyte meter;

reading the pattern using a capacitive measurement;

determining calibration data using the capacitive measurement of the pattern;

placing a fluid sample in the channel of the test strip; and

determining the analyte concentration of the fluid sample using the calibration data.

26. A method of determining an analyte concentration of a fluid sample, the method comprising:

providing a test strip including a pattern disposed thereon and a channel formed therein, the pattern including a plurality of variations of at least one of height, width, and contrast;

providing an analyte meter including a port;

placing the test strip into the port of the analyte meter;

reading the pattern using a radio frequency measurement;

determining calibration data using the radio frequency measurement of the pattern;

placing a fluid sample in the channel of the test strip; and

determining the analyte concentration of the fluid sample using the calibration data.