Method and system for calculating accurate battery percentage usage in wireless field devices

• US 9,575,132 B2
• Filed: 07/17/2014
• Issued: 02/21/2017
• Est. Priority Date: 07/17/2014
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Shetty, Udaya, Samudrala, Prasad, Raravi, Channabasavaraj, Swanson, Norman
• Primary Examiner(s): Dunn, Drew A
• Assistant Examiner(s): Robbins, Jerry D
• Application Number:
  US14/333,610
• Publication Number:
  US 20160018470A1
• Time in Patent Office: 950 Days
• Field of Search: 324/426
• 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:

providing a wireless field device having a radio board operatively connected to a sensor board, said sensor board operatively and electrically connected to a battery associated with said wireless field device, wherein slot structured events occur at said radio board;

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

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

combining said current consumed by said radio board and said current consumed by said sensor board in said wireless field device in response to averaging said current consumed by said sensor board with respect to said particular type of said sensor and said reporting period to calculate a predictive value indicative of a remaining life of said battery associated with said wireless field device;

automatically monitoring said slot structured events and cumulative uptime data from an initial time said battery was placed in said wireless field device as a fresh battery; and

wherein said determining said current consumed by said radio board associated with said wireless device, further comprises;

determining said current consumed by said radio board associated with said wireless device based on said sum of said current consumed as a result of said slot structured events and said cumulative uptime data.

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

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

4. The method of claim 1 wherein said wireless field device is configured for wireless communication over a wireless network, said wireless field device having at least one antenna for communication with said wireless network.

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

6. The method of claim 1 wherein said wireless field device comprises a wireless field router.

7. The method of claim 1 wherein said sensor board is associated with a group of sensors including said particular type of sensor, said group of sensors including at least one of:

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

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

a wireless field device having a radio board operatively connected to a sensor board, said sensor board operatively and electrically connected to a battery associated with said wireless field device, wherein slot structured events occur at said radio board;

at least one processor; and

a non-transitory computer-usable medium embodying computer program code, said non-transitory computer-usable medium capable of communicating with said at least one processor, said computer program code comprising instructions executable by said at least one processor and configured for;

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

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

combining said current consumed by said radio board and said current consumed by said sensor board in said wireless field device in response to averaging said current consumed by said sensor board with respect to said particular type of said sensor and said reporting period to calculate a predictive value indicative of a remaining life of said battery associated with said wireless field device;

automatically monitoring said slot structured events and cumulative uptime data from an initial time said battery was placed in said wireless field device as a fresh battery; and

wherein said determining said current consumed by said radio board associated with said wireless device, further comprises;

determining said current consumed by said radio board associated with said wireless device based on said sum of said current consumed as a result of said slot structured events and said cumulative uptime data.

9. The system of claim 8 wherein said instructions are further configured for analyzing data derived from said radio board to further assist in determining said total current consumed by said radio board.

10. The system of claim 8 wherein said instructions are further configured for analyzing data derived from said sensor board to further assist in determining said current consumed by said sensor board.

11. The system of claim 8 wherein said wireless field device is configured for wireless communication over a wireless network, said wireless field device having at least one antenna for communication with said wireless network.

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

13. The system of claim 8 wherein said wireless field device comprises a wireless field router.

14. The system of claim 8 wherein said sensor board is associated with a group of sensors including said particular type of sensor, said group of sensors including at least one of:

a temperature sensor, a pressure sensor, and 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 said slot structured events occurring at said radio board, said wireless field device having a radio board operatively connected to a sensor board, said sensor board operatively and electrically connected to a battery associated with said wireless field device, wherein slot structured events occur at said radio board;

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

combine said current consumed by said radio board and said current consumed by said sensor board in said wireless field device in response to said averaging said current consumed by said sensor board with respect to said particular type of said sensor and said reporting period to calculate a predictive value indicative of a remaining life of said battery associated with said wireless field device;

automatically monitor said slot structured events and cumulative uptime data from an initial time said battery was placed in said wireless field device as a fresh battery; and

wherein said determine said current consumed by said radio board associated with said wireless device, further comprises;

determine said current consumed by said radio board associated with said wireless device based on said sum of said current consumed as a result of said slot structured events and said cumulative uptime data.

16. The computer program product of claim 15 wherein said sensor board is associated with a group of sensors including said particular type of sensor, said group of sensors including at least one of:

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

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 assist in determining said current consumed by said sensor board.

18. The computer program product of claim 15 wherein said wireless field device is configured for wireless communication over a wireless network, said wireless field device having at least one antenna for communication with said wireless network.

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

20. The computer program product of claim 19 wherein said wireless field device comprises a wireless field router.