Remote monitor/control for billboard lighting or standby power system

• US 8,248,203 B2
• Filed: 09/15/2008
• Issued: 08/21/2012
• Est. Priority Date: 09/15/2008
• Status: Expired due to Fees

• Current Assignee: Commtiva Technology Corporation
• Original Assignee: Commtiva Technology Corporation
• Inventors: Hanwright, Martin James, Chen, Shih-Chiea
• Primary Examiner(s): SYED, NABIL H
• Application Number:
  US12/210,877
• Publication Number:
  US 20100066484A1
• Time in Patent Office: 1,436 Days
• Field of Search: 340/3.44, 340/3.8, 340/3.7, 340/815.4, 340/814.47, 340/815.49, 340/815.6, 340/693.5, 700/291, 700/292, 700/293, 700/294
• US Class Current: 340/3.44
• CPC Class Codes: G06F 3/147 using display panels
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2360/144 the light being ambient light
• CPC Class Codes: G09G 2370/16 Use of wireless transmission of display information
• CPC Class Codes: G09G 2380/06 Remotely controlled electronic signs other than labels
• CPC Class Codes: H04L 12/40013 Details regarding a bus controller

Abstract

A lighting monitor/control system for remote billboards uses a cellular network to provide utility power and light status information to a central controller, which in response provides control signals to individual remote billboard lighting controllers for setting operating parameters such as multiple on/off times, lighting power adjustments for individual billboards, and custom lighting schedules based upon geographic and environmental considerations. Battery back-up is provided in the event of utility power outage with automatic reversion to utility power when restored. Immediate notification of failure of utility power or of individual lamp or ballast failure is provided by SMS messaging formatted so as to minimize the number of messages and reduce communications costs. The monitor/control system is also adapted for use in remote power monitoring applications to automatically switch to standby power (generator) in the absence of primary power and to return to primary power when restored.

Claims

1. A monitor/controller for use with a remote billboard lighting system including plural billboards each having plural display faces with respective associated sets of lights for illuminating said display faces, said monitor/controller comprising:

a utility power connection for providing utility power to said sets of lights of each billboard of said plural billboards;

plural sensors each coupled to a respective set of lights of said sets of lights for providing plural output signals representing operating status of said sets of lights;

plural relays each coupled to said respective set of lights of said sets of lights;

said monitor/controller communicating with at least one central controller operating in a wireless communications network;

a programmable signal processor coupled to said plural sensors and said relays and in communication with said at least one central controller via said wireless communications network for providing information to said at least one central controller regarding said operating status of said sets of lights, and for receiving and storing lighting operation commands from said at least one central controller and providing output signals to said relays for controlling the operation of each said sets of lights, in accordance with a predetermined schedule and said operating status of said sets of lights;

wherein said programmable signal processor includes a test and calibration program initiated during installation of the monitor/controller and including determination of maximum, minimum and average current in a respective circuit connected to each of said sets of lights after operation of said sets of lights has stabilized, wherein the test and calibration program further includes determining and storing referenced calibration data for said respective circuit connected to said each of said sets of lights after operation of said sets of lights has stabilized;

wherein said programmable signal processor further includes a program for storing a site history record based upon information determined and stored by said test and calibration program for said sets of lights in said each billboard of said plural billboards;

wherein said programmable signal processor determines a reference tolerance curve comprising upper and lower tolerance limits for acceptable current level for said respective circuit connected to said each of said sets of lights in said each billboard of said plural billboards.

2. The monitor/controller of claim 1 further comprising a sensor input interface circuit coupled between said programmable signal processor and said plural sensors and responsive to said plural output signals for providing said information regarding said operating status of said sets of lights to said programmable signal processor.

3. The monitor/controller of claim 2 wherein said information regarding said operating status of said sets of lights includes light operation status information, performance information and fault condition information.

4. The monitor/controller of claim 1 further comprising a power control interface circuit coupled between said programmable signal processor and said sets of lights and including said plural relays.

5. The monitor/controller of claim 4 wherein said power control interface circuit further includes a relay connector arrangement for coupling said plural relays to said programmable signal processor.

6. The monitor/controller of claim 1 further comprising a backup power supply and a power management unit coupled to said programmable signal processor for automatically coupling said backup power supply to said sets of lights when said utility power is unavailable.

7. The monitor/controller of claim 6 wherein said backup power supply comprises a storage battery.

8. The monitor/controller of claim 7 wherein said power management unit includes a battery power control circuit coupled to said storage battery for maintaining said storage battery fully charged.

9. The monitor/controller of claim 8 further comprising a first visual display coupled to said battery power control circuit for providing a visual indication of the status of storage battery charge.

10. The monitor/controller of claim 9 wherein said first visual display comprises a light emitting diode (LED).

11. The monitor/controller of claim 6 further comprising a second visual display coupled to said power management unit for providing a visual indication of the availability of said utility power.

12. The monitor/controller of claim 11 wherein said second visual display comprises an LED.

13. The monitor/controller of claim 8 wherein said monitor/controller terminates operation of the billboard lighting system in the absence of said utility power if said storage battery power is less than 20% of normal said utility power.

14. The monitor/controller of claim 1 wherein said wireless communications network comprises a global system for mobile communication (GSM) network.

15. The monitor/controller of claim 14 further comprising a cellular module for interfacing with said GSM network.

16. The monitor/controller of claim 15 further comprising a SIM interface circuit for providing said monitor/controller with a unique identity in said GSM network.

17. The monitor/controller of claim 6 wherein said power management unit includes a linear voltage regulator for regulating a first DC input voltage for use by first components of the remote billboard lighting system to a second lower DC voltage for use by second components of said remote billboard lighting system.

18. The monitor/controller of claim 17 wherein said first DC input voltage is +6 VDC and said second lower DC voltage is +3 VDC.

19. The monitor/controller of claim 1 further comprising a signal processor connector coupled to said programmable signal processor for allowing for re-programing of said programmable signal processor.

20. The monitor/controller of claim 1 further comprising an electrically erasable programmable read only memory (EEPROM) coupled to said programmable signal processor for storing said monitor/controller operating information.

21. The monitor/controller of claim 20 wherein said operating information stored in said EEPROM includes monitor/controller configuration information, sensor measurement data, scheduled lighting on/off times, calibration reference values, tolerance values, and real time clock (RTC) information.

22. The monitor/controller of claim 1 wherein each of said plural sensors is a current sensor for sensing current level in said respective set of lights.

23. The monitor/controller of claim 1 wherein said programmable signal processor includes a self-test program initiated upon start-up of said monitor/controller to test operation of said monitor/controller.

24. The monitor/controller of claim 23 wherein said test operation of said monitor/controller includes testing for receipt of a valid wireless signal and clearing of a buffer memory in said programmable signal processor.

25. The monitor/controller of claim 24 further comprising at least one visual status indicator coupled to said programmable signal processor for providing a visual indication of a failure of any portion of said test operation.

26. The monitor/controller of claim 1 further comprising a video display coupled to said programmable signal processor and responsive to the current in each light circuit for providing a visual indication of the current in each circuit connected to a respective light relative to the upper and lower tolerance limits of the current level for that particular circuit.

27. The monitor/controller of claim 26 wherein said visual indication is provided to said at least one central controller via said wireless communications network.

28. The monitor/controller of claim 26 wherein said programmable signal processor periodically updates the upper and lower tolerance limits to accommodate variation in operation arising from the age of lights and other components, the geographic location of said remote billboards, and environmental changes.

29. The monitor/controller of claim 1 further comprising a video display coupled to said programmable signal processor for providing a visual alert indicating an out-of-tolerance operating state of said lighting system.

30. The monitor/controller of claim 1 further comprising a video display coupled to said programmable signal processor for displaying a comparison of current lighting system operation with prior lighting system operation.

31. The monitor/controller of claim 1 further comprising input means for allowing an operator to deactivate the lights associated with a billboard face no longer in use.

32. The monitor/controller of claim 31 wherein said input means includes a video display screen coupled to said programmable signal processor.

33. The monitor/controller of claim 32 wherein customer assigned billboard faces and unassigned billboard faces as well as individual identification indicia for the billboard faces is presented on said video display screen.