An LED drive circuit drives an LED module. The LED module has a light-emitting diode, and an identification unit having characteristic information relating to light-emitting characteristics of the light-emitting diode. The LED drive circuit includes a detection unit and a drive circuit. The detection unit is provided for detecting characteristic information, and generates a detection signal that corresponds to the characteristic information. The drive circuit generates drive current by a drive signal supplied according to the characteristic information based on the detection signal, and supplies the drive current to drive the light-emitting diode.

A method of controlling different types of lighting fixture drivers includes sending, by a lighting control device, one or more queries to a driver. The method further includes determining, by the lighting control device, a type of the driver based on one or more results of the one or more queries. The method also includes sending to the driver, by the lighting control device, a lighting control command that is compatible with the driver after determining the type of the driver.

A presence or an absence of an occupant is detected, and an occupancy sensor signal is generated representative of an active state in which the presence of the occupant is detected, and an inactive state in which the absence of the occupant is detected. An ambient light sensor detects the ambient light level and generates an ambient light sensor signal representative of the ambient light level. Dimmable illumination is generated at a first dimming level, based on the ambient light level, corresponding to the active state and a second dimming level corresponding to the inactive state. A transition delay time between an onset of the inactive state and a transition between the first dimming level and the second dimming level may be controlled. The first dimming level, the second dimming level, and/or the transition delay time may be variably set or controlled locally or via a remote device.

Lighting evaluation technology, in which lighting usage information for an area is collected and analyzed. Through the use of one or more devices in communication with a light source device that collects usage data, lighting system usage information may be analyzed and meaningful results may be provided to the user. Such results may help to inform the user of one or more light bulb products which may be recommended for use in the particular area evaluated.

A lighting system for providing a lighting scene in an environment occupied by a user, the system comprising:a plurality of illumination sources, each source having a respective location sensor arranged to detect a location of the respective source relative to at least one point defined independently of the lighting scene and at least one of the sources further having at least one of an orientation sensor arranged to detect an orientation of the at least one source and a luminaire type sensor arranged to detect a type of the at least one source; anda controller arranged to provide control signals to the plurality of sources in order to control the sources to render the lighting scene; wherein the controller is arranged todetermine an effect location of an illumination effect from the at least one source based on the detected location and at least one of the detected orientation and detected luminaire type of said at least one source andadapt the control commands based on the detected source locations and the determined effect location for the at least one source, thereby rendering the lighting scene relative to said at least one point.

Disclosed are systems and methods for adjusting environmental conditions based on automatically and manually generated requests. A commissioned unit comprising at least one IP luminaire (140, 150), transmits a signal comprising one or more identification codes. The signal may be, for example, a coded light signal. An environment control device (160) receives the signal, detects user input indicating one or more preferred environmental conditions, and transmits an environment control request comprising the one or more preferred environmental conditions. An environment manager module (110) receives the environment control request, generates an environment control command using the control request, and transmits the environment control command to one or more commissioned units to alter environmental conditions in a space in accordance with the user input.

A method of controlling different types of lighting fixture drivers includes sending, by a lighting control device, one or more queries to a driver. The method further includes determining, by the lighting control device, a type of the driver based on one or more results of the one or more queries. The method also includes sending to the driver, by the lighting control device, a lighting control command that is compatible with the driver after determining the type of the driver.

The present disclosure provides an intelligent lighting control system for automated lighting adjustments. The system includes a lighting control module configured to cause a transmission of a quantity of electrical energy to a lighting circuit and a detector circuit positioned in the lighting control module and configured to detect a change in a strength of detected signal, such as wireless signal. The system includes a controller coupled to the detector circuit and the lighting control module. The controller includes a processor configured to determine a time of day and to cause the lighting control module to change the quantity of electrical energy transmitted to the lighting circuit in response to the time of day exceeding a predetermined time threshold and the change in the strength of the wireless signal falling below a predetermined value. The controller can cause the lighting control module to reduce the quantity of electrical energy.

The present disclosure provides an intelligent lighting control system for automated lighting adjustments. The system includes a lighting control module configured to cause a transmission of a quantity of electrical energy to a lighting circuit and a detector circuit positioned in the lighting control module and configured to detect a change in a strength of detected signal, such as wireless signal. The system includes a controller coupled to the detector circuit and the lighting control module. The controller includes a processor configured to determine a time of day and to cause the lighting control module to change the quantity of electrical energy transmitted to the lighting circuit in response to the time of day exceeding a predetermined time threshold and the change in the strength of the wireless signal falling below a predetermined value. The controller can cause the lighting control module to reduce the quantity of electrical energy.

A lighting apparatus includes a step-up converter, at least one step-down converter, and a controller. The step-up converter is configured to step up a voltage of a direct-current power supply to obtain an output voltage having a first voltage value and output the output voltage. The at least one step-down converter is configured to step down the output voltage of the step-up converter to have a second voltage value to output a current having a current value according to the second voltage value to a light source. The controller is configured to acquire information about a specification of the light source, control the step-down converter such that the current value becomes a current value according to the specification, and control the step-up converter such that the first voltage value changes in accordance with the specification.