The present disclosure provides apparatuses and methods for bulb detection for a lighting control system. The apparatus includes a lighting control module configured to cause a transmission of a quantity of electrical energy to a lighting circuit of a light fixture electrically connected to the lighting control module. The apparatus includes a detector circuit positioned in the lighting control module. The detector circuit is configured to measure a response of the lighting circuit to the transmission of the quantity of electrical energy. The apparatus also includes a controller in electrical communication with the detector circuit. The controller is specially programmed to correlate the quantity of electrical energy transmitted to the lighting circuit to the response of the lighting circuit. The controller is further programmed to determine the bulb type of a bulb electrically coupled to the lighting circuit of the light fixture.

Disclosed is a backlight test circuit including N circuit blocks. Each circuit block includes M mini-LED circuits, and each mini-LED circuit includes L mini-LEDs and a switching circuit. The L mini-LEDs are connected in parallel or in serial as a mini-LED set. The switching circuit controls the turning on and the turning off of the mini-LED set according to a control signal. N, M and M are positive integers. During a backlight test, in each circuit block, at least one of the mini-LED sets is turned on. By using this backlight test circuit, the abnormal mini-LED circuit can be found. Thus, a producer can only execute a rework process for the abnormal mini-LED circuit without extra cost.

An abnormality detection apparatus (100) is configured to detect an abnormality of a lighting device (200). The abnormality detection apparatus (100) includes an illuminance sensor (110), a memory (120) and a controller (130). The controller (130) is configured to detect the abnormality of the lighting device (200) based on a criterion stored in the memory (120) and a difference between an illuminance detected by the illuminance sensor (110) during on state of the lighting device (200) and an illuminance detected by the illuminance sensor (110) during off state of the lighting device (200).

A light failure detection system with pre-trip inspection for use in a vehicle having a plurality of light emitting diode lighting devices includes a plurality of voltage level monitoring circuits and plurality of current monitoring circuits for measuring the voltage and current draw of a plurality of lighting circuits. The system includes a pre-trip inspection mode for sequentially activating a plurality of lighting circuits and allowing inspection of the plurality of light emitting diode lighting devices.

A lighting apparatus with an image-projecting function that is convenient for a user can be provided. The lighting apparatus includes: an illuminating unit that emits illumination light; and a projection-type image display unit that projects an image. The projection-type image display unit is configured so that a setting menu screen settable about an image displayed by the projection-type image display unit can be displayed.

Method and device for adapting a series constant power system to operate constant voltage lighting.

A lighting system includes a first luminaire and a second luminaire which are arranged in an illumination area, and a controller. The first luminaire is connected to a first receiver which receives a signal from a transmission tag, and has a first lighting lamp. The second luminaire is connected to a second receiver which receives a signal from the transmission tag, and has a second lighting lamp. The controller turns on the first lighting lamp when the first receiver receives the signal from the transmission tag, then, turns on the second lighting lamp when the second receiver receives the signal from the transmission tag, and notifies that an abnormal situation has occurred when no signal from the transmission tag is received by the first receiver within a predetermined time period from the turning on of the second lighting lamp.

The present invention concerns a method for dynamically controlling powering a piece of electrical equipment powered by an energy storage element and a renewable energy source, the power of the power supply of said equipment being temporally variable according to an adjustable reference time curve characterized in that it comprises steps of adjustment on the basis of at least one external factor and at least one internal factor, and the constraint according to which the integral over the relevant operating cycle of said adjusted curve is lower than the quantity of energy that can be allocated from said energy storage element, during the relevant operating cycle, said external factors being physical parameters acquired by local sensors. The invention also concerns a lighting system implementing this method, an array of such electrical systems and a method for detecting one or a plurality of malfunctions of such a lighting system.

A diagnostic apparatus (101) for diagnosing faults within a lighting system comprising at least one luminaire (121), and at least one presence sensor (123, 151) configured to control the operation of at least one luminaire (121) when an object is within the presence sensor (123, 151) sensing range, the diagnostic apparatus (101) comprising: a user input (103) configured to receive at least one input to control the at least one luminaire (121); and a fault determiner (221) configured to determine at least one lighting system fault based on the at least one input and wherein an object is within the sensing range of a presence sensor (123, 151) expected to be associated with the at least one luminaire (121); and a fault reporter (223) configured to generate at least one fault report based on the determined at least one lighting system fault.

Devices, methods, and systems for alternating current circuits for airfield lighting are described herein. One system includes a circuit comprising an isolation transformer, a protection hardware circuit coupled to the isolation transformer, wherein the protection hardware prevents a voltage between an electrical contact of the circuit and a ground contact from meeting or exceeding a threshold voltage, and a load coupled to the protection hardware circuit to receive electrical energy from the isolation transformer.