Wireless Sensor Network Calibration System and Method

• US 20080211657A1
• Filed: 01/10/2008
• Published: 09/04/2008
• Est. Priority Date: 01/10/2007
• Status: Active Grant

• Current Assignee: MobileHelp, LLC
• Original Assignee: Halo Monitoring, Inc. (Integrity Tracking LLC)
• Inventors: Otto, Chris A.
• Granted Patent: US 8,912,899 B2
• Time in Patent Office: Days
• US Class Current: 340/501
• CPC Class Codes: A61B 2562/0219 Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0024 for multiple sensor units attached to the patient, e.g. using a body or personal area network
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: G08B 25/10 using wireless transmission systems G08B25/009 takes precedence
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

A system has at least one sensor and a controller communicatively coupled to the sensor. The system further has logic configured to calculate a calibration value based upon an initial state of the sensor and store the calibration value in memory.

Claims

1. A system, comprising:

at least one sensor;

a controller communicatively coupled to the sensor via a network; and

logic configured to calculate a calibration value based upon an initial state of the sensor and stored the calibration value in memory.

3. The system of claim 1, wherein the initial state of the sensor is based upon a location of the sensor on a body.

4. The system of claim 1, wherein the initial state of the sensor is based upon a measure of the sensor'"'"'s performance.

5. The system of claim 1, wherein the initial state of the sensor is based upon a measure of the performance of a battery powering the sensor.

6. The system of claim 1, wherein the initial state of the sensor is based upon a measure of the temperature in an operating environment of the sensor.

7. The system of claim 1, wherein the initial state of the sensor is based upon a measure of the humidity in an operating environment of the sensor.

8. The system of claim 1, wherein the sensor is coupled to a body.

9. The system of claim 1, wherein the logic is further configured to calculate an affect related to an operation-changing factor and generate a function representing the affect of the factor on the sensor.

10. The system of claim 9, wherein the logic is further configured to obtain a reading from the sensor and apply the function to the reading.

2. The system of claim 2, wherein the logic is further configured to obtain at least one reading from the sensor and modify the reading based upon the calibration value.

11. A method, comprising the steps of:

coupling a sensor to a body;

communicatively coupling a controller to the sensor;

calculating a calibration value based upon an initial state of the sensor.

12. The method of claim 11, further comprising the step of obtaining data indicative of a reading from the sensor.

13. The method of claim 12, further comprising the step of modifying the data based upon the calibration value.

14. The method of claim 11, wherein the calculating step further comprises the step of calculating the initial state of the sensor based upon a location of the sensor on a body.

15. The system of claim 11, wherein the calculating step further comprises the step of calculating the initial state of the sensor based upon a measure of the sensor'"'"'s performance.

16. The method of claim 11, wherein the calculating step further comprising the step of calculating the initial state of the sensor based upon a measure of the performance of a battery powering the sensor.

17. The method of claim 11, wherein the calculating step further comprising the step of calculating the initial state of the sensor based upon a measure of the temperature in an operating environment of the sensor.

18. The method of claim 11, wherein the calculating step further comprising the step of calculating the initial state of the sensor based upon a measure of the humidity in an operating environment of the sensor.

19. The method of claim 11, further comprising the step of calculating an affect related to an operation-changing factor and generate a function representing the affect of the factor on the sensor.

20. The method of claim 19, further comprising the steps of:

obtaining a reading from the sensor; and

applying the function to the reading.

21. A system, comprising:

at least one sensor;

a controller communicatively coupled to the sensor; and

means for calculating a calibration value based upon an initial state of the sensor.