A protection circuit for an LED driver and a DC/DC converter. The LED driver includes a DC/DC converter and a protection circuit. The DC/DC converter is used to convert the input voltage of the DC voltage input terminal into an output voltage, which comprises a high frequency switch and an inductor. The protection circuit comprises a detection module, a trigger module and a locking module. The detection module is coupled to the inductor for detecting the output voltage and outputting the voltage detection signal. The trigger module is used to receive the voltage detection signal and output a voltage trigger signal when the voltage detection signal is a negative voltage and the absolute value of the negative voltage is greater than or equal to the preset value. The locking module is coupled to the trigger module and stops the high frequency switch from operating after receiving the voltage trigger signal.

A light fixture comprises a fixture body, at least one lamp mounted to the fixture body for emitting a light beam, at least one speaker device and/or at least one sound detection device and/or at least one image capturing device integrally mounted to the fixture body. The speaker device provides for emitting sound. The sound detection device provides for detecting ambient sound. The Image capturing device provides for capturing an image. A controller is in operative communication with the at least one lamp, to the at least one speaker and/or to the at least one sound detection and/or at least one image capturing device for control thereof. A system for controlling the light emitted by these light fixtures comprises a master controller for receiving information from the controller and for transmitting control signals thereto.

Driver circuitry including an inductor configured to be used both as inductor of a buck convertor, and to provide high-speed pulse driving of a load.

Methods and systems are provided herein for tracking vehicles' locations within a parking area. A vehicle identifier may be assigned to a vehicle entering the parking area. A plurality of light sensors may be employed in the parking area to guide the vehicle to an unoccupied parking spot and/or to determine where the vehicle is ultimately parked. In some embodiments, the plurality of light sensors may each be configured to receive and retransmit locally, e.g., to neighboring light sensors, the vehicle identifier on detection of physical presence of the vehicle. In this manner, the vehicle identifier “travels” with the vehicle among the plurality of light sensors to the vehicle's final parking spot. A driver later reclaiming a vehicle may provide a vehicle identifier to a parking kiosk, which may provide output indicative of the vehicle's location in the parking area.

A structural element, including a base portion and a connecting central pin, has its base portion formed hallow, and having an internal reinforcement in the shape of WOW or MOM, to connect these elements with an insertable central pin so that the cross-section of the pin corresponds to the shape of the chamber between the reinforcements, when the upper surface of the structural element has longitudinal grooves, and is made from a modified polymer or elastomeric material comprising India rubber mixtures. The foundation is monomer ethylene propylene diene or natural rubber or styrene-butadiene rubber and/or combinations of the natural rubber/styrene-butadiene rubber, or thermoplastic elastomers, whose base is monomer ethylene-propylene-diene or polypropylene/monomer ethylene-propylene-diene or polyvinylchloride, or thermoplastic vulcanizates, whose base is monomer ethylene-propylene-diene and polyethylene or natural and/or synthetic rubber, modified by polyethylene or polypropylene.

A control device which is connected to luminaires includes: a storage which stores associations between types of luminaires and identification (ID) number ranges for each of the types; an identifying unit which identifies a type of each of the luminaires; and an assigning unit which, by reference to the associations, assigns, to each of the luminaires, an ID number in an ID number range for the type identified by the identifying unit such that, among the luminaires, luminaires of a same type have consecutive ID numbers in the ID number range.

An integrated system and process provides integrated control of the environment within a personal space. A tent or other structure suitable for forming a personal space, is in contact with, and may enclose, a user station. The system includes a control system, main controller, control modules, sensors, environmental units and other controllers that operate in an integrated fashion to provide a controlled environment within the personal space. The tent may enclose all or portions of the control system, main controller, control modules, sensors, environmental units and other controllers. Portions of the control system, main controller, control modules, sensors, environmental units and other controllers may reside outside tent. A process for providing environmental control of the personal space includes learning capabilities.

A lighting system includes lighting devices and a controller. An Over-The-Air (OTA) update of lighting device programming is delivered via point-to-point connections between the controller and some number of lighting devices and/or between the lighting devices. Delivery of the OTA update from one lighting device to another lighting device is triggered based on an update command sent via a wireless mesh network of the lighting system.

Imitation candle devices and systems with enhanced features are described that facilitate remote operation and usage of electronic candles. The disclosed features include application programs running on a processor of a mobile device and a detachable wireless transceiver included within an imitation candle to facilitate the electronic candle to be turned on or off remotely. In some embodiments, when a user blows into the microphone of the mobile device the imitation flame of the electronic candle is moved according to the speed of the blow. In some implementations, parameters such as a flicker speed, a flicker color, a duration of flickering, are changed using signals that are received from the mobile device.

The examples herein offer an improved, more integrated implementation of lighting control and building management control, e.g. within the same gateway or cloud computing/control element(s), via an integrated software architecture. A visualization platform of the software architecture provides an integrated user interface via network communication of the computing element with a user terminal device. The integrated user interface offers the user an integrated view of status of building automation control (BAC) appliances and luminaires within the premises, as well as integrated access to control operations of the BAC appliances and the luminaires. For example, the overall system of integrated lighting and building management control may offer a ‘single pane of glass’ type user interface for lighting and other managed operations in the premises. Also, the architecture may utilize a broker for publish-and-subscribe communications, for exchange of information between lighting and building management application and with the visualization platform.