The present disclosure provides an LED lamp drive system with an emergency power supply thereof configured to detect an input voltage of an electric supply network or an emergency power supply to determine whether the LED lamp drive system is during in an emergency working mode or a mains power working mode, and a power switching module configured to control a drive control module to isolate or connect a drive regulation signal that corresponds to a sensor module to an LED drive power supply, for lighting up LED light beads thereof. During in the emergency working mode, the drive control module isolates the drive regulation signal that corresponds to the sensor module, and during in the mains power working mode, the sensor module inputs a detection signal, and the drive regulation signal corresponding to the detection signal is connected to the LED drive power supply for providing flexible illumination thereof.

Disclosed is a downlight power box control circuit capable of realizing emergency lighting and general lighting, comprising a battery, a logic input module and a light-emitting element which are electrically connected to a main control module. The logic input module determines whether a mains voltage is available. In a case where the mains supply supplies power normally, the main control module controls the light-emitting elements to operate according to 100% of a load power. In case of an outage of the mains supply, the battery is used to supply power to a light tube, and the control module controls the light-emitting element to operate according to 30%-50% of the load power to realize emergency lighting.

Various embodiments of a method and apparatus for providing light that is resilient to power outages are disclosed. The apparatus is a device that includes a primary light source, which includes an AC-to-DC converter that converts the AC power from a light socket to DC power. The device includes a secondary power source, as a backup, having a battery and a light source electrically connected in parallel. In some embodiments, the light source resides on a flexible, printed circuit board. In some embodiments, the device includes a sensor that senses the loss of AC power. In some embodiments, in response to the sensor sensing the loss of AC power, the light shuts off or fades out after a predetermined time period. In some embodiments, the user can stop the light from turning off or fading out by pressing a button.

A method for controlling a light source includes determining, by a processor coupled to a memory having a set of memory locations, receipt of a set of beacon signals from a set of power-sensing devices, each beacon signal associated with one of the set of power-sensing devices, each one of the set of power-sensing devices associated with one of the memory locations. The method includes, upon receipt of each beacon signal, storing, by the processor, an indicator value in the memory location associated with the power-sensing device. The method includes determining, by the processor, a presence of an emergency mode based on the values of the set of memory locations. The method further includes controlling, by the processor, the light source based on the presence of the emergency mode. The method includes updating, by the processor, the values of the set of memory location.

Disclosed is a dimming control circuit compatible with emergency lighting, and a method. The dimming control circuit includes a main control circuit; a first port circuit, where an input terminal of the first port circuit is electrically connected to an external automatic dimming circuit, and an output terminal of the first port circuit is electrically connected to a corresponding input terminal of the main control circuit; and a second port circuit.

Embodiments are generally directed to an emergency driver (10) and an intelligent module (20) for the emergency driver (10). An embodiment of the emergency driver (10) may include a digital communication interface (12), a DC power supply (14) and a controller (16). The digital communication interface (12) may be configured to receive an input signal (41) via a control bus (18). The DC power supply (14) may be configured to provide a DC output (45) to the control bus (18). The controller (16) may be coupled to the digital communication interface (12) and the DC power supply (14) and may be configured to control the emergency driver (10) to operate in a first operation mode. The input signal (41) received at the digital communication interface (12) may be a digital input signal when the emergency driver is operating in a first operation mode.

A load control system has a system controller and a plurality of load control devices which receive power from a utility power source. The load control system also includes at least one emergency load control device which receives power from a backup power source in the event of a power failure of the utility power source. The emergency load control device is configured to enter an emergency mode during the power failure of the utility power source, wherein in the emergency mode, the emergency load control device controls respective electrical loads according to emergency mode preset settings, and the emergency load control device transmits a message to the system controller to indicate the emergency load control device is in the emergency mode. The system controller is configured to transmit a message to the emergency load control device to exit the emergency mode when power from the utility power source is restored.

A lighting system for an emergency vehicle, the lighting system including one or more light sources, and a processor, where the processor is configured to receive one or more compliance data from each light source of the one or more light sources, receive one or more location data from each light source of the one or more light sources, compare the compliance data and the location data with a compliance standard, determine a compliance minimum and a compliance maximum for one or more characteristics for each light source of the one or more light source, and adjust the one or more characteristics of each light source of the plurality of light sources based on one or more user commands, wherein each light source of the plurality of light sources operates at or above the compliance minimum and at or below the compliance maximum for each light source.

A power pedestal includes: a pedestal member comprising a base structured to be attached to a platform and an enclosure extending from the base; a leakage current detection unit structured to detect a leakage current in the water in a slip and to output a leakage current detection signal based on the detected leakage current; and a marina safety status indication unit comprising: a control circuit connected to the leakage current detection circuit and structured to determine a real time marina safety status in the water within the slip and to output a marina safety status signal based on the determination; and a marina safety status indication device including a rub rail and a marina safety status indicator embedded in the rub rail and connected to the control circuit, the marina safety status indicator structured to provide the real time marina safety status based on the marina safety status signal.