METHOD AND SYSTEM FOR CALCULATING ACCURATE BATTERY PERCENTAGE USAGE IN WIRELESS FIELD DEVICES

• US 20160018470A1
• Filed: 07/17/2014
• Published: 01/21/2016
• Est. Priority Date: 07/17/2014
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Samudrala, Prasad, Raravi, Channabasavaraj, Swanson, Norman, Shetty, Udaya
• Granted Patent: US 9,575,132 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC

Abstract

Methods and systems are disclosed herein for accurately calculating battery consumption in a wireless field device. The total current consumed by a radio board associated with a wireless field device can be determined based on the sum of the current consumed as a result of particular events occurring at the radio board. The current consumed by a sensor board of the wireless field device can then be averated with respect to particular type of sensor. The current consumed by the radio board and the current consumed by the sensor board in the wireless field device can be combined to calculate a predictive value indicative of a remaining life of a battery associated with the wireless field device.

Claims

1. A method for accurately calculating battery consumption in a wireless field device, said method comprising:

determining a total current consumed by a radio board associated with a wireless field device based on a sum of a current consumed as a result of particular events occurring at said radio board;

averaging a current consumed by a sensor board of said wireless field device with respect to a particular type of sensor and a reporting period thereof; and

combining said current consumed by said radio board and said current consumed by said sensor board in said wireless field device to calculate a predictive value indicative of a remaining life of a battery associated with said wireless field device.

2. The method of claim 1 further comprising analyzing data derived from said radio board to determine said total current consumed by said radio board.

3. The method of claim 1 further comprising analyzing data derived from said sensor board to determine said current consumed by said sensor board.

4. The method of claim 1 further comprising calculating said predictive value.

5. The method of claim 1 wherein said particular events include at least one of a transmission mode, a reception mode, and/or a sleep mode associated with said radio board.

6. The method of claim 1 wherein said particular events are associated with events that occur with respect to a wireless field router.

7. The method of claim 1 wherein said sensor board is associated with at least one of the following types of sensors:

a temperature sensor, a pressure sensor, and/or a humidity sensor.

8. A system for accurately calculating battery consumption in a wireless field device, said system comprising a processor and a memory storing instructions that, when executed, cause the system to:

determine a total current consumed by a radio board associated with a wireless field device based on a sum of a current consumed as a result of particular events occurring at said radio board;

average a current consumed by a sensor board of said wireless field device with respect to a particular type of sensor and a reporting period thereof; and

combine said current consumed by said radio board and said current consumed by said sensor board in said wireless field device to calculate a predictive value indicative of a remaining life of a battery associated with said wireless field device.

9. The system of claim 8 further comprising instructions stored in the memory that, when executed, causes the system to analyze data derived from said radio board to determine said total current consumed by said radio board.

10. The system of claim 8 further comprising instructions stored in the memory that, when executed, causes the system to analyze data derived from said sensor board to determine said current consumed by said sensor board.

11. The system of claim 8 further comprising instructions stored in the memory that, when executed, causes the system to calculate said predictive value.

12. The system of claim 8 wherein said particular events include at least one of a transmission mode, a reception mode, and/or a sleep mode associated with said radio board.

13. The system of claim 8 wherein said particular events are associated with events that occur with respect to a wireless field router.

14. The system of claim 8 wherein said sensor board is associated with at least one of the following types of sensors:

a temperature sensor, a pressure sensor, and/or a humidity sensor.

15. A computer program product comprising a non-transitory computer usable medium including a computer readable program, wherein the computer readable program when executed on a computer causes the computer to:

determine a total current consumed by a radio board associated with a wireless field device based on a sum of a current consumed as a result of particular events occurring at said radio board;

average a current consumed by a sensor board of said wireless field device with respect to a particular type of sensor and a reporting period thereof; and

combine said current consumed by said radio board and said current consumed by said sensor board in said wireless field device to calculate a predictive value indicative of a remaining life of a battery associated with said wireless field device.

16. The computer program product of claim 15 wherein the computer readable program when executed on a computer causes the computer to analyze data derived from said radio board to determine said total current consumed by said radio board.

17. The computer program product of claim 15 wherein the computer readable program when executed on a computer causes the computer to analyze data derived from said sensor board to determine said current consumed by said sensor board.

18. The computer program product of claim 15 wherein the computer readable program when executed on a computer causes the computer to calculate said predictive value.

19. The computer program product of claim 15 wherein said particular events include at least one of a transmission mode, a reception mode, and/or a sleep mode associated with said radio board.

20. The computer program product of claim 15 wherein said particular events are associated with events that occur with respect to a wireless field router.