Dimming control for emergency lighting systems
First Claim
1. An emergency lighting module for providing emergency power to a solid state luminaire, the emergency lighting module comprising:
- a microcontroller; and
a detector coupled to the microcontroller and configured to detect a status signal indicative of a status of an AC line voltage,wherein the microcontroller is configured to output a first dimming control signal to the solid state luminaire in response to the status signal,wherein the first dimming control signal is configured to control operation of a dimming controller in the solid state luminaire, andwherein the microcontroller is further configured to output a select signal to the solid state luminaire to enable the luminaire to select from between the first dimming control signal and a second dimming control signal that is input to the solid state luminaire and to cause the solid state luminaire to dim a light emitting diode (LED) of the solid state luminaire in accordance with the first dimming control signal when the first dimming control signal is selected.
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Accused Products
Abstract
An emergency lighting module for providing emergency power to a solid state luminaire includes a microcontroller, and a detector coupled to the microcontroller and configured to detect a status signal indicative of a status of an AC line voltage, the emergency lighting module is configured to output a dimming control signal to the solid state luminaire in response to a reduction of the AC line voltage. The microcontroller is further configured to output a select signal to the solid state luminaire to cause the solid state luminaire to dim in accordance with the dimming control signal when the dimming control signal is output.
72 Citations
21 Claims
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1. An emergency lighting module for providing emergency power to a solid state luminaire, the emergency lighting module comprising:
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a microcontroller; and a detector coupled to the microcontroller and configured to detect a status signal indicative of a status of an AC line voltage, wherein the microcontroller is configured to output a first dimming control signal to the solid state luminaire in response to the status signal, wherein the first dimming control signal is configured to control operation of a dimming controller in the solid state luminaire, and wherein the microcontroller is further configured to output a select signal to the solid state luminaire to enable the luminaire to select from between the first dimming control signal and a second dimming control signal that is input to the solid state luminaire and to cause the solid state luminaire to dim a light emitting diode (LED) of the solid state luminaire in accordance with the first dimming control signal when the first dimming control signal is selected. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An emergency lighting module for providing emergency power to a solid state luminaire, the emergency lighting module comprising:
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a microcontroller; an AC detector coupled to the microcontroller and configured to detect a presence of an AC line voltage, wherein the emergency lighting module is configured to output a dimming control signal to the solid state luminaire in response to a reduction of the AC line voltage; and an input configured to receive a first external dimming signal; and an output configured to control the solid state luminaire to select one of the dimming control signal or a second dimming control signal input to the solid state luminaire; wherein the microcontroller is configured to generate the dimming control signal and to output the dimming control signal and the selection signal to the solid state luminaire in response to the first external dimming signal when no reduction of the AC line voltage is detected. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An emergency lighting module for providing emergency power to a solid state luminaire, the emergency lighting module comprising:
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a microcontroller; a plurality of inputs configured to receive a plurality of external dimming signals; and a dimming control output coupled to the solid state luminaire; an output configured to control the solid state luminaire to select one of a first dimming control signal or a second dimming control signal input to the solid state luminaire; wherein the microcontroller is configured to generate the first dimming control signal and to output the first dimming control signal to the solid state luminaire in response to one of the plurality of external dimming signals, and wherein the first dimming control signal and the second dimming control signal are configured to control operation of a dimming controller in the solid state luminaire. - View Dependent Claims (21)
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Specification