Power over ethernet prioritization system and method for surveillance cameras

• US 8,502,408 B2
• Filed: 03/18/2011
• Issued: 08/06/2013
• Est. Priority Date: 03/19/2010
• Status: Active Grant

• Current Assignee: Quickset Defense Technologies LLC
• Original Assignee: Videolarm, Inc. (Moog Incorporated)
• Inventors: Schneider, Peter, Jia, Cheng, Harden, Chris, Pfaffenberger, James L.
• Primary Examiner(s): AMAYA, CARLOS DAVID
• Application Number:
  US13/579,000
• Publication Number:
  US 20120319468A1
• Time in Patent Office: 872 Days
• Field of Search: 307/1, 307/3, 307/DIG.1, 340/310.11
• US Class Current: 307/1
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04N 7/185 from a mobile camera, e.g. for remote control

Abstract

The present invention provides a system and method for prioritized application of operational power receiving over a data transmission cable. The system includes a primary component, at least one secondary component, and a power supply. The system further includes a data transmission cable for transmitting operational power from the power supply to the primary component and the at least one secondary component, and for transmitting data between the primary component and a remote station. The system further includes a splitter for separating the operational power from the data received over the data transmission cable, and prioritizing delivery of the operational power to the primary component and the at least one secondary component, wherein at least a threshold level of power is delivered to the primary component, and available operational power in excess of the threshold level is delivered to the at least one secondary component.

Claims

1. A system for prioritized application of operational power receiving over a cable comprising:

a primary component;

at least one secondary component;

a power supply;

a data transmission cable for delivering the operational power from the power supply to the primary component and the at least one secondary component, and for transmitting data between the primary component and a remote station; and

a splitter for separating the operational power from the data received over the data transmission cable, and prioritizing delivery of the operational power to the primary component and the at least one secondary component, wherein power to the primary component is monitored and a predetermined minimum threshold is set at approximately the operational requirement of the primary component and if the monitored power falls below the predetermined minimum threshold, the splitter will decrease the power delivered to the at least one secondary component to an operational power to operate the at least one secondary component.

2. The system of claim 1, wherein the data transmission cable comprises a plurality of channels, at least one of said plurality of channels carrying the data, and another at least one of said plurality of channels carrying the operational power.

3. The system of claim 1, wherein the data transmission cable is an Ethernet cable.

4. The system of claim 1, wherein the primary component comprises a surveillance camera.

5. The system of claim 4, wherein the surveillance camera comprises a pan-tilt-zoom mechanism.

6. The system of claim 4, wherein the at least one secondary component comprises a heater/blower for the surveillance camera.

7. The system of claim 4, wherein the at least one secondary component comprises a pan-tilt-zoom mechanism for the surveillance camera.

8. The system of claim 1, wherein the splitter comprises a current sensor for sensing delivery of the operational power to the primary component, and a microprocessor for comparing delivery of the operational power to the primary component relative to the threshold level of power.

9. The system of claim 1, wherein the operational power to the at least one secondary component is shut off if the operational power delivered to the at least one secondary component falls below a second predetermined minimum threshold for the at least one secondary component.

10. The system of claim 1, further comprising:

a battery that provides additional power when the operational power falls to a critical level and the battery is charged when there is a surplus of operational power available.

11. The system of claim 1, further comprising:

at least one tertiary component that is switched on when there is sufficient operational power available that is not required for the primary component and the at least one secondary component operations.

12. A method of prioritizing delivery of operational power to a primary component and a secondary component, comprising:

transmitting the operational power and data over a data transmission cable;

transmitting the operational power from the data transmission cable to the primary component;

comparing monitoring and the operational power delivered to the primary component relative to a threshold power level; and

transmitting the threshold power level to the primary component and if the monitored operational power falls below the threshold power level, splitter will decrease the power delivered to the at least one secondary component.

13. The method of claim 12, wherein the primary component is a video surveillance camera.

14. The method of claim 13, wherein the video surveillance camera further comprises a pan-tilt-zoom mechanism.

15. The method of claim 13, wherein the secondary component is a heater/blower for the video surveillance camera.

16. The method of claim 13, wherein the secondary component is a pan-tilt-zoom mechanism for the video surveillance camera.

17. A power over Ethernet splitter for delivery of operational power to a primary component and a secondary component, comprising:

means for sensing a state of power transmission to the primary component;

means for comparing the state of power transmission to the primary component relative to a threshold power level; and

means for transmission of the threshold power level to the primary component and if the sensed operational power falls below the threshold power level, the transmission means will decrease the power delivered to the at least one secondary component.

18. A method of prioritizing delivery of operational power to a primary component and a secondary component embodied in a computer program product for execution on an instruction processing system, comprising a tangible storage medium readable by the instruction processing system and storing instructions for execution by the instruction processing system for performing the method comprising:

measuring the operational power being transmitted to the primary component;

comparing the operational power being transmitted to the primary component relative to a threshold power level; and

transmitting the threshold power level to the primary component and if the measured operational power falls below the threshold power level, the power delivered to the at least one secondary component is decreased.

19. The method of claim 18, wherein the secondary component is a heating element, further comprising:

determining a temperature of the primary component;

setting the heating element to off if the temperature of the primary component is above a predetermined bottom threshold.

20. The method of claim 18, wherein the secondary component is a heating element, further comprising:

determining a temperature of the primary component;

turning the heating element on if the temperature of the primary component is below a predetermined bottom threshold.

21. The method of claim 18, wherein the secondary component is a heating element, further comprising:

determining if a power supply test is to be performed;

incrementing a duty cycle value for the heating element if the power supply test is to be performed;

waiting a predetermined time to validate that the available power to the heating element has not failed during the power supply test; and

writing the duty cycle value to memory.

22. The method of claim 21, further comprising:

determining if 100% of the duty cycle value is reached during the power supply test;

setting a maximum duty cycle to 75% of the duty cycle value; and

writing the maximum duty cycle to memory.