Lamp monitoring and control unit and method

• US 6,119,076 A
• Filed: 04/16/1997
• Issued: 09/12/2000
• Est. Priority Date: 04/16/1997
• Status: Expired due to Term

• Current Assignee: Lightronics Incorporated
• Original Assignee: A.L. Air Data, Inc.
• Inventors: Williams, Larry, Young, Michael F.
• Primary Examiner(s): ASSOUAD, PATRICK J
• Application Number:
  US08/838,302
• Time in Patent Office: 1,245 Days
• Field of Search: 702/188, 702/52, 315/129, 315/133, 315/134, 315/149, 364/130, 364/138, 340/870.01, 340/870.07, 340/870.16, 340/825.06, 455/422, 455/403, 455/423, 455/73
• US Class Current: 702/188
• CPC Class Codes: H05B 47/175 by remote control
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: H05B 47/195 the transmission using visible or infrared light
• CPC Class Codes: H05B 47/22 with communication between the lamps and a central unit

Abstract

A unit and method for remotely monitoring and/or controlling an apparatus and specifically for remotely monitoring and/or controlling street lamps. The lamp monitoring and control unit comprises a processing and sensing unit for sensing at least one lamp parameter of an associated lamp, and for processing the lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information, and a transmit unit for transmitting the monitoring data, representing the at least one lamp parameter, from the processing and sensing unit. The method for monitoring and controlling a lamp comprises the steps of: sensing at least one lamp parameter of an associated lamp; processing the at least one lamp parameter to produce monitoring data and control information; transmitting the monitoring data; and applying the control information.

Claims

1. A lamp monitoring and control unit comprising:

a processing and sensing unit which senses at least one lamp parameter of an associated lamp, and processes the at least one lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information; and

a transmit unit which transmits the monitoring data, representing said at least one lamp parameter, from said processing and sensing unit, wherein the lamp monitoring and control unit is coupled to the associated lamp via a standard three prong plug.

24. The lamp monitoring and control unit of claim 1, further comprising:

a light sensor, coupled to said processing and sensing unit, to sense an amount of ambient light, produce a light signal associated with the amount of ambient light, and output the light signal to said processing and sensing unit.

25. The lamp monitoring and control unit of claim 24, wherein the light signal from said light sensor is a threshold indication signal.

26. The lamp monitoring and control unit of claim 24, wherein said light sensor includes a photo sensor and associated light sensor circuitry.

27. The lamp monitoring and control unit of claim 1, wherein said processing and sensing unit receives a hot power line and a neutral power line and outputs a switched power line.

28. The lamp monitoring and control unit of claim 27, wherein the standard three prong plug carries the hot power line, the switched power line, and the neutral power line.

29. The lamp monitoring and control unit of claim 27, wherein the processing and sensing unit includes a relay for switching the switched power line to the hot power line.

30. The lamp monitoring and control unit of claim 27, wherein the processing and sensing unit includes a current sensor for sensing a switched current in the switched power line.

31. The lamp monitoring and control unit of claim 30, wherein the current sensor includes a transformer and associated circuitry to produce a DC voltage associated with the switched current.

32. The lamp monitoring and control unit of claim 30, wherein the processing and sensing unit includes an A/D converter for converting a DC voltage associated with the switched current to a switched current data signal.

33. The lamp monitoring and control unit of claim 27, wherein the processing and sensing unit includes a voltage sensor for sensing a switched voltage in the switched power line.

34. The lamp monitoring and control unit of claim 27, further comprising a power supply for receiving the hot power line and the neutral power line and for outputting at least one internal voltage.

35. The lamp monitoring and control unit of claim 1, wherein the monitoring data is transmitted to a centralized base station.

36. The lamp monitoring and control unit of claim 1, wherein said transmit unit includes a transmitter and a modified directional discontinuity ring radiator.

37. The lamp monitoring and control unit of claim 30, wherein said modified directional discontinuity ring radiator includes a plurality of loops for resonance at a desired frequency range.

38. The lamp monitoring and control unit of claim 1, wherein said transmit unit transmits signals in a frequency range of 218-219 MHZ.

39. The lamp monitoring and control unit of claim 1, wherein said transmit unit transmits infrared signals.

40. The lamp monitoring and control unit of claim 1, wherein the associated lamp is a mercury-vapor lamp.

41. The lamp monitoring and control unit of claim 1, wherein the associated lamp is a street lamp.

48. lamp monitoring and control unit of claim 24, wherein said transmit unit automatically transmits the monitoring data when the light signal is a prescribed value.

49. The lamp monitoring and control unit of claim 1, wherein said transmit unit automatically transmits the monitoring data at random intervals.

52. The lamp monitoring and control unit of claim 1, wherein the processing and sensing unit includes a current sensor for sensing current in the associated lamp.

2. A lamp arrangement comprising:

a lamp monitoring and control unit which receives a hot power line and a neutral power line and outputs a switched power line in accordance with at least one lamp parameter; and

a lamp assembly which receives the switched power line from said lamp monitoring and control unit, wherein said lamp monitoring and control unit is coupled to said lamp assembly via a three prong plug.

3. The lamp arrangement of claim 2, wherein said lamp monitoring and control unit includes a transmit unit for transmitting monitoring data, representing at least one lamp parameter of said lamp assembly.

53. The lamp arrangement of claim 2, wherein the lamp monitoring and control unit includes a current sensor for sensing current in said lamp assembly.

4. A method for monitoring and controlling a lamp comprising the steps of:

sensing at least one lamp parameter of an associated lamp;

processing the at least one lamp parameter to produce monitoring data and control information;

automatically transmitting the monitoring data; and

applying the control information,

wherein the step of transmitting the monitoring data includes a plurality of redundant transmissions.

5. The method for monitoring and controlling a lamp of claim 4, wherein said step of sensing includes sensing an amount of ambient light and said step of processing includes producing a light signal associated with the amount of ambient light.

6. The method for monitoring and controlling a lamp of claim 4, wherein said step of sensing includes sensing an electrical current.

7. The method for monitoring and controlling a lamp of claim 6, wherein said step of sensing an electrical current includes outputting a DC voltage representative of the current and converting the DC voltage from analog to digital.

8. The method for monitoring and controlling a lamp of claim 4, wherein said step of sensing includes sensing an electrical voltage.

9. The method for monitoring and controlling a lamp of claim 8, wherein said step of sensing an electrical voltage includes comparing the electrical voltage to a threshold voltage value.

10. The method for monitoring and controlling a lamp of claim 4, wherein said step of processing includes providing an initial delay to prevent false triggering.

11. The method for monitoring and controlling a lamp of claim 10, wherein the initial delay for a sunrise threshold condition is at least 45 seconds.

12. The method for monitoring and controlling a lamp of claim 4, wherein said step of applying control information includes providing a current stabilization delay when outputting a lamp turn-on signal.

13. The method for monitoring and controlling a lamp of claim 12, wherein the current stabilization delay is at least 10 minutes.

14. The method for monitoring and controlling a lamp of claim 4, wherein said step of applying control information includes providing a relay settle delay when outputting a lamp turn-off signal.

15. The method for monitoring and controlling a lamp of claim 14, wherein the relay settle delay is at least 0.5 seconds.

16. The method for monitoring and controlling a lamp of claim 4, wherein said step of transmitting the monitoring data includes a reporting start time delay.

17. The method for monitoring and controlling a lamp of claim 16, wherein the reporting start time delay is pseudo-random.

18. The method for monitoring and controlling a lamp of claim 16, wherein the reporting start time delay is based on a serial number.

19. The method for monitoring and controlling a lamp of claim 4, wherein each of the plurality of redundant transmissions is transmitted on a pseudo-randomly selected frequency.

20. The method for monitoring and controlling a lamp of claim 4, wherein each of the plurality of redundant transmissions is transmitted on a frequency based on a serial number.

21. The method for monitoring and controlling a lamp of claim 4, wherein each of the plurality of redundant transmissions is transmitted at a reporting delta time relative to a reporting start time.

22. The method for monitoring and controlling a lamp of claim 21, wherein the reporting delta time is pseudo-random.

23. The method for monitoring and controlling a lamp of claim 21, wherein the reporting delta time is based on a serial number.

50. The lamp monitoring and control unit of claim 5, wherein said transmit unit automatically transmits the monitoring data at prescribed intervals.

51. The lamp monitoring and control unit of claim 5, wherein said transmit unit automatically transmits the monitoring data upon the sensing of a prescribed lamp parameter by said processing and sensing unit.

42. A lamp monitoring and control unit comprising:

a processing and sensing unit which senses at least one lamp parameter of an associated lamp, and processes the at least one lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information; and

a transmit unit which transmits the monitoring data, representing said at leas one lamp parameter, from said processing and sensing unit, wherein the lamp monitoring and control unit is electrically coupled to a standard three prong plug receptacle.

43. The lamp monitoring and control unit of claim 42, wherein said transmit unit automatically transmits the monitoring data.

55. The lamp monitoring and control unit of claim 42, wherein the processing and sensing unit includes a current sensor for sensing current in the associated lamp.

44. A lamp monitoring and control unit, comprising:

a processing and sensing unit which senses at least one lamp parameter of an associated lamp, and processes the at least one lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information;

a transmit unit which automatically transmits the monitoring data, representing said at least one lamp parameter, from said processing and sensing unit; and

a light sensor coupled to said processing and sensing unit which senses an amount of ambient light, produces a light signal associated with the amount of ambient light, and outputs the light signal to said processing and sensing unit,

wherein said transmit unit automatically transmits the monitoring data when the light signal is a prescribed value.

45. A lamp monitoring and control unit, comprising:

a processing and sensing unit which senses at least one lamp parameter of an associated lamp, and processes the at least one lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information; and

a transmit unit which automatically transmits the monitoring data, representing said at least one lamp parameter, from said processing and sensing unit,

wherein said transmit unit automatically transmits the monitoring data at random intervals.

46. A lamp monitoring and control unit, comprising:

a processing and sensing unit which senses at least one lamp parameter of an associated lamp, and processes the at least one lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information; and

a transmit unit which automatically transmits the monitoring data, representing said at least one lamp parameter, from said processing and sensing unit,

wherein said transmit unit automatically transmits the monitoring data at prescribed intervals.

47. A lamp monitoring and control unit, comprising:

a processing and sensing unit which senses at least one lamp parameter of an associated lamp, and processes the at least one lamp parameter to monitor and control the associated lamp by outputting monitoring data and control information; and

a transmit unit which automatically transmits the monitoring data, representing said at least one lamp parameter, from said processing and sensing unit,

wherein said transmit unit automatically transmits the monitoring data upon the sensing of a prescribed lamp parameter by said processing and sensing unit.

54. A method for monitoring and controlling a lamp comprising the steps of:

sensing at least one lamp parameter of an associated lamp;

processing the at least one lamp parameter to produce monitoring data and control information;

automatically transmitting the monitoring data; and

applying the control information,

wherein the at least one lamp parameter includes current in the associated lamp.