Method and system for controlling a luminaire
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G05B-011/01
G05B-013/00
G05F-001/00
H05B-037/02
출원번호
UP-0479769
(2006-06-30)
등록번호
US-7734356
(2010-06-29)
발명자
/ 주소
Cleland, Donald A.
Kubek, Laurence E.
Wong, Carol A.
Cho, Yong Jeong
Anderson, James A.
McCarthy, Colleen D.
Sharma, Pratibha
Jacklin, Gregory P.
Kurz, Gerald E.
출원인 / 주소
Streetlight Intelligence, Inc.
대리인 / 주소
Bethards, Charles W.
인용정보
피인용 횟수 :
19인용 특허 :
26
초록▼
Methods and corresponding systems for controlling a light fixture include a memory for storing data and software. A multi-tap capacitor has a plurality of tap capacitors integrated into a capacitor housing. A plurality of switches are each coupled to one of the plurality of tap capacitors for select
Methods and corresponding systems for controlling a light fixture include a memory for storing data and software. A multi-tap capacitor has a plurality of tap capacitors integrated into a capacitor housing. A plurality of switches are each coupled to one of the plurality of tap capacitors for selectively coupling the tap capacitors together to produce a variable multi-tap capacitance. A processor is coupled to the memory and the switches to facilitate: detecting a trigger for changing a lumen level output by the light fixture; determining a new lumen level in response to the trigger; determining a capacitance value that corresponds to the new lumen level; and configuring the plurality of switches to produce the multi-tap capacitance that corresponds to the new lumen level. The processor can record data in the memory that represents times of lumen changes and switch settings, which data correlates to power consumption.
대표청구항▼
What is claimed is: 1. A system for controlling a light fixture comprising: memory for storing data and software; a multi-tap capacitor having a plurality of tap capacitors integrated into a capacitor housing; a plurality of switches, wherein each switch is coupled to one of the plurality of tap ca
What is claimed is: 1. A system for controlling a light fixture comprising: memory for storing data and software; a multi-tap capacitor having a plurality of tap capacitors integrated into a capacitor housing; a plurality of switches, wherein each switch is coupled to one of the plurality of tap capacitors for selectively coupling the tap capacitors together to produce a multi-tap capacitance; a processor coupled to the memory and the switches, wherein the processor, the switches, and the memory are cooperatively operable to facilitate: detecting a trigger for changing a lumen level output by the light fixture; determining a new lumen level in response to and corresponding to the trigger; determining settings for the plurality of switches that correspond to the new lumen level; and configuring the plurality of switches to produce a multi-tap capacitance that corresponds to the new lumen level; wherein the multi-tap capacitor comprises a base capacitor integrated into the capacitor housing, wherein the base capacitor has first and second terminals connected, respectively, to a first and a second connector lug, wherein each of the plurality of tap capacitors has a first tap capacitor terminal and a second tap capacitor terminal, wherein the first terminal of the base capacitor and each of the first tap capacitor terminals is connected, respectively, to a corresponding connector pin in a multi-pin connector, and wherein the second tap capacitor terminals are connected to the second terminal and the second connector lug, wherein the multi-tap capacitance is measured between the first and second connector lugs, and can be configured to be equal to the base capacitor value plus values of one or more selected tap capacitors connected in parallel with the base capacitor by the plurality of switches. 2. The system for controlling a light fixture according to claim 1 wherein the multi-tap capacitor has (t) number of tap capacitors, and wherein the t tap capacitors have a capacitance value ( C X ) where C x = C tap _ tot ( 2 t - x ) 2 t - 1 for x equal 1 to t, where Ctap-tot has a value equal to the difference between the base capacitor and a capacitance value for operating the light fixture at maximum brightness. 3. The system for controlling a light fixture according to claim 1 wherein the base capacitor has a capacitance value selected to operate the light fixture in a dimmest mode. 4. The system for controlling a light fixture according to claim 2 wherein the multi-tap capacitor has a maximum multi-tap capacitance substantially equal to the base capacitance connected in parallel with the n number of tap capacitors, and wherein the maximum multi-tap capacitance is selected to operate the light fixture in a brightest mode. 5. The system for controlling a light fixture according to claim 1 wherein the multi-tap capacitor is configured and adapted to replace a capacitor in a fixed brightness light fixture. 6. The system for controlling a light fixture according to claim 1 wherein the processor, the switches, and the memory are cooperatively operable to facilitate configuring the switches to connect selected pins in the multi-pin connector to produce the multi-tap capacitance that corresponds to the new lumen level. 7. The system for controlling a light fixture according to claim 1 wherein the processor, the switches, and the memory are cooperatively operable to facilitate the detecting the trigger for changing the lumen level comprises the processor, the switches, and the memory being cooperatively operable to facilitate detecting a time of day for changing the lumen level. 8. The system for controlling a light fixture according to claim 1 wherein the processor, the switches, and the memory are cooperatively operable to facilitate the detecting the trigger for changing the lumen level comprises the processor, the switches, and the memory being cooperatively operable to facilitate detecting a change in activity level. 9. The system for controlling a light fixture according to claim 1 comprising a data receiver coupled to the processor, and wherein the processor, the data receiver, and the memory are cooperatively operable to facilitate the detecting the trigger for changing the lumen level comprises the processor, the switches, the data receiver, and the memory being cooperatively operable to facilitate detecting a lumen level instruction received by the data receiver. 10. The system for controlling a light fixture according to claim 9 wherein the data receiver is a wireless transceiver. 11. The system for controlling a light fixture according to claim 9 wherein the data receiver is a receiver for receiving data transmitted over power distribution wires. 12. The system for controlling a light fixture according to claim 9 wherein the data receiver is a transceiver. 13. The system for controlling a light fixture according to claim 1 wherein the processor, the switches, and the memory are cooperatively operable to facilitate determining the new lumen level in response to the trigger comprises the processor, the switches, and the memory being cooperatively operable to facilitate recalling from the memory a lumen level associated with the trigger. 14. The system for controlling a light fixture according to claim 1 comprising a lamp lumen sensor coupled to the processor for measuring a lumen level output of a lamp in the light fixture, wherein the processor, the switches, the lamp lumen sensor, and the memory are cooperatively operable to facilitate: measuring a lamp lumen output of the lamp using the lamp lumen sensor; comparing the lamp lumen output to a set point; and reconfiguring the switches to produce an adjusted multi-tap capacitance for operating the lamp at a lamp lumen output closer to the set point. 15. A method for controlling a light fixture comprising: configuring a multi-tap capacitor to produce a first capacitance for operating the light fixture at a first lumen level; reconfiguring the multi-tap capacitor to produce a second capacitance for operating the light fixture at a second lumen level; reading a lumen output of a lamp in the light fixture; comparing the lumen output with the second lumen level to produce a lumen level error; reconfiguring the multi-tap capacitor to produce an adjusted second capacitance to reduce the lumen level error, and wherein the reconfiguring the multi-tap capacitor to produce the second capacitance for operating the light fixture at the second lumen level comprises reconfiguring the multi-tap capacitor in response to receiving in a network receiver an instruction operative to change a capacitance; and logging, in response to reconfiguring of the multi-tap capacitor, data that indicates a prior configuration of the multi-tap capacitor and a time of operation of the light fixture in the prior configuration of the multi-tap capacitor. 16. A method for controlling a light fixture comprising: configuring a multi-tap capacitor to produce a first capacitance for operating the light fixture at a first lumen level; reconfiguring the multi-tap capacitor to produce a second capacitance for operating the light fixture at a second lumen level; reading a lumen output of a lamp in the light fixture; comparing the lumen output with the second lumen level to produce a lumen level error; and reconfiguring the multi-tap capacitor to produce an adjusted second capacitance to reduce the lumen level error, wherein the reconfiguring the multi-tap capacitor comprises: providing the multi-tap capacitor having a plurality of tap capacitors integrated within a capacitor housing; providing a plurality of switches, wherein each of the plurality of switches is connected to one of the tap capacitors; and automatically using a processor, reconfiguring the switches to connect selected ones of the plurality of tap capacitors in parallel to provide the second capacitance; and logging, in response to reconfiguring of the multi-tap capacitor, data that indicates a prior configuration of the multi-tap capacitor and a time of operation of the light fixture in the prior configuration of the multi-tap capacitor. 17. The method for controlling a light fixture according to claim 15 wherein the reconfiguring the multi-tap capacitor comprises reconfiguring the multi-tap capacitor in response to detecting a lumen change trigger. 18. The method for controlling a light fixture according to claim 17 wherein the detecting a lumen change trigger comprises detecting a time of day having a scheduled lumen change. 19. The method for controlling a light fixture according to claim 17 wherein the detecting a lumen change trigger comprises detecting a change in activity level. 20. The method for controlling a light fixture according to claim 17 wherein the detecting a lumen change trigger comprises detecting a change in ambient light level. 21. A method for controlling a light fixture comprising: configuring a multi-tap capacitor to produce a first capacitance for operating the light fixture at a first lumen level; reconfiguring the multi-tap capacitor to produce a second capacitance for operating the light fixture at a second lumen level; reading a lumen output of a lamp in the light fixture; comparing the lumen output with the second lumen level to produce a lumen level error; reconfiguring the multi-tap capacitor to produce an adjusted second capacitance to reduce the lumen level error; and logging, in response to reconfiguring of the multi-tap capacitor, data that indicates a prior configuration of the multi-tap capacitor and a time of operation of the light fixture in the prior configuration of the multi-tap capacitor. 22. The method for controlling a light fixture according to claim 21 wherein the data comprises logging data representing the adjusted second capacitance.
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