A method for determining locations of luminaires of a lighting system during a commissioning process uses sound beacons and measured travel time to determine distance. The method enables estimating the distance between the luminaires, and based thereon, the locations of the luminaires, entirely automatically by pinging the other devices, without requiring a commissioning engineer or technician initiating the distance measurement process at each luminaire individually, between luminaires and their location.

A marker system includes an enclosure with a controller therewithin. Emitters are electrically interfaced to the controller and include visible wavelength emitters and infrared wavelength emitters. The controller is configured to selectively initiate a flow of electric current though the visible wavelength emitters or through the infrared wavelength emitters causing the visible wavelength emitters or the infrared wavelength emitters to emit light and the light passes through the enclosure. There is at least one infrared detector, each of which is electrically interfaced to the controller and each of which is configured to detect infrared light that enters the enclosure. When the controller receives an electrical signal from any of the at least one infrared detector indicating reception of infrared light, the controller emits a signal to warn of the reception of infrared light (e.g., an audible signal, a vibration, a wireless signal, a wired signal).

The invention relates to a method (20) for monitoring the density and the movement of humans using a grid (100) of a plurality of luminaires (101a-d), each of the luminaires (101a-d) comprising an acoustic sensor (105), a motion sensor (107), preferably a Doppler sensor, a controller (109) supplied with output signals of said sensors (105, 107), and a wireless interface (111) for a communication between the controller (109) and a gateway (401) for forwarding sensor information signals (130) to a central database (403), wherein, based on the information in the database (403), the density and/or the movement of humans in an area covered by the grid (100) is estimated by generating a time series of sensor values, such as sound pressure, motion speed and/or motion intensity, of each luminaire (101a-d).

In embodiments of the present invention, a method and system is provided for commissioning improved intelligent, LED-based lighting systems. The LED based lighting systems may include fixtures with one or more LED light bars, integrated sensors, onboard intelligence to send and receive signals and control the LED light bars, and network connectivity to other fixtures.

Devices and methods for facilitating the operations and usage of electronic candle devices are disclosed. In one exemplary aspect, an imitation candle device is disclosed. The imitation candle device comprises a body; a flame element protruding from top of the body; one or more light sources positioned to illuminate the flame element to produce an appearance of a true fire flame; a plurality of touch sensitive segments positioned on, or embedded in, a peripheral section of the body, wherein each of the plurality of touch sensitive segments is operable to produce an electrical signal in response to sensing a touch; and an electronic control circuitry operable to receive the electrical signal produced in response to sensing the touch by one or more of the plurality of touch sensitive segments and to control at least an output of the one or more light sources based on the electrical signal.

A load control system for controlling the amount of power delivered from an AC power source to a plurality of electrical load includes a plurality of energy controllers. Each energy controller is operable to control at least one of the electrical loads. The load control system also includes a first broadcast controller that has a first antenna and a second antenna. The first antenna is arranged in a first position and the second antenna is arranged in a second position that is orthogonal to the first position. The broadcast controller is operable to transmit a first wireless signal via the first antenna and a second wireless signal via the second antenna. Each of the energy controllers is operable to receive at least one of the first and second wireless signals, and to control the respective load in response to the received wireless signal.

A processor receives data associated with a device. On the basis of the data associated with the device, the processor modulates a light from the artificial light source at a rate imperceptible to a human eye while detectable by a light sensor device. The modulated light is representative of the data associated with the device. The modulated light is detected, demodulated, and decoded by the light sensor device to retrieve the data associated with the device. Further, the data associated with the device is presented by the light sensor device to a user. In addition, the light sensor device is configured to receive input data from the user and communicate the input data to the processor via a wireless link. The processor is configured to receive the input data from the light sensor device and effect a change in a characteristic of the device based on the received input data.

System for displaying hazard events and adjusting hazard detector settings on a mobile device includes a user interface executed on the mobile device, a hazard detector, and a computer server system communicatively coupled to the mobile device and hazard detector. The hazard detector generates hazard events indicating detection of smoke or carbon monoxide. The hazard events are transmitted to the computer server system and then to the mobile device. User interface displays the hazard events in an event group. User interface receives an adjusted value for a setting of the hazard detector and transmits the adjusted value to the computer server system. The computer server system determines that the adjusted value corresponds to the hazard detector, receives a check-in event from the hazard detector, and transmits the adjusted value to the hazard detector in response to receiving the check-in event. The hazard detector applies the adjusted value to the setting.

Hazard detector for providing a pre-alarm of a developing hazardous condition can include a detection module that detects a hazard level of smoke or carbon monoxide, a light source that generates light, a speaker that generates an audible sound, a horn that generates an audible alarm that a higher volume than the speaker, and a processing module. The processing module can receive the detected hazard level and compare it with the pre-alarm threshold and the emergency threshold. The processing module can determine that the hazard level is greater than the pre-alarm threshold and less than the emergency threshold and cause an audible pre-alarm speech to be generated via the speaker that warns of the developing hazardous condition.

Apparatus and associated methods may relate to an artificial tree apparatus having a plurality of trunk segments that couple together to provide a plurality of information or command signals to load devices connected thereto. In an illustrative example, one or more branch segments having light emitting devices are connected to the trunk segments to independently receive the electrical power and command signals via a control system. In some implementations, each command signal generated by the control system may include data pertaining to light color and illumination pattern. In some embodiments, each branch segment and associated light emitting devices may be independently controlled via a multi-channel arrangement. In some implementations, each group of light emitting devices may be manually configured via one or more user-interfaces. In various implementations, each trunk segment may include an axial electrical connector which permits adjacent trunk segments from being connected in any radial orientation relative to each other.