Abstract: A system and method for performing free space optical communication with a plurality of streetlamp assemblies. The method includes transmitting a light beam from a first free space optical (FSO) unit of a first streetlamp assembly to a second FSO unit of a second streetlamp assembly along a transmission path. A transmission error is detected while transmitting the light beam along the transmission path. A location of one or more smart minors is obtained. An alternate transmission path is determined from the first FSO unit to the second FSO unit or a third FSO unit. The alternate transmission path includes a reflection of the light beam from the one or more smart minors. The first FSO unit is oriented with respect to the alternate transmission path. The light beam is transmitted from the first FSO unit along the alternate transmission path.

Abstract: A method (400) for identifying precipitation (50) includes the steps of: providing (410) a lighting unit (10) having a first photosensor (32), a second photosensor (34), and a controller (22), where the first and second photosensors are vertically spaced by a first distance; receiving (430), by the first photosensor, a first light signal from the precipitation at a first time point (T1); receiving (440) by the second photosensor, a second light signal from the precipitation at a second time point (T2); calculating (450) the amount of time between the first light signal and the second light signal; and calculating (460), based on the first distance and the calculated amount of time between the first light signal and the second light signal, a velocity of the precipitation.

Abstract: A method of tracking a target including detecting and localizing an incident in a first area using a first sensor system; determining a target within a plurality of targets associated with the incident in the first area; and tracking the target from the first area to a second area using a second sensor system. The method further includes collecting unique identifiers for the plurality of targets using wireless packet analyzers and determining a digital identity of the target in the first area based on a correlation between the tracking of the target and the unique identifiers collected by the first and second wireless packet analyzers.

Abstract: An object detection system is for object detection within a field of view. A light source provides detection illumination to the field of view and a sensor senses reflected light from the field of view. Time of flight analysis is used to provide distance or presence information for objects within the field of view. The controller is adapted to derive a signal quality parameter relating to the distance or presence information and to control the light source intensity in dependence on the signal quality parameter. In this way, energy savings are made possible by adapting the detection system settings to the scene being observed.

Abstract: A method (300) for detecting a dangerous environmental condition within a lighting environment (100) includes the steps of: providing (310) a lighting network (200) having a plurality of lighting units (10) each with a light source (12), at least some of the plurality of lighting units including a range sensor (32); obtaining (330), by the range sensors, range information; determining (360), based at least in part on the obtained range information, a depth of precipitation or accumulation at a first lighting unit; and determining (370), based on the determined depth, a dangerous environmental condition at the first lighting unit.

Abstract: Techniques disclosed herein relate to adjusting parameters that impact reliability of free space optics (“FSO”) between stationary fixtures. In various embodiments, a street lamp FSO system may include: motion sensor(s) (104, 204) to detect motion at location(s) of a street lamp (210); local FSO component(s) (108, 208) for deployment on the street lamp; and logic (102) to: receive first samples indicative of first motion of a first portion of the street lamp relative to abase (214) of the street lamp from the motion sensor(s); analyze the first samples to generate and store a reference motion profile for future use; receive second samples indicative of second motion of the street lamp from the motion sensor(s); compare the second samples with the reference motion profile; and based on the comparison, take action(s) to maintain a FSO communication beam between the local FSO component(s) and a remote FSO component.

Abstract: A method (400) for identifying precipitation (50) includes the steps of: providing (410) a lighting unit (10) having a first photosensor (32), a second photosensor (34), and a controller (22), where the first and second photosensors are vertically spaced by a first distance; receiving (430), by the first photosensor, a first light signal from the precipitation at a first time point (T1); receiving (440) by the second photosensor, a second light signal from the precipitation at a second time point (T2); calculating (450) the amount of time between the first light signal and the second light signal; and calculating (460), based on the first distance and the calculated amount of time between the first light signal and the second light signal, a velocity of the precipitation.

Abstract: A system and method for performing free space optical communication with a plurality of streetlamp assemblies. The method includes transmitting a light beam from a first free space optical (FSO) unit of a first streetlamp assembly to a second FSO unit of a second streetlamp assembly along a transmission path. A transmission error is detected while transmitting the light beam along the transmission path. A location of one or more smart minors is obtained. An alternate transmission path is determined from the first FSO unit to the second FSO unit or a third FSO unit. The alternate transmission path includes a reflection of the light beam from the one or more smart minors. The first FSO unit is oriented with respect to the alternate transmission path. The light beam is transmitted from the first FSO unit along the alternate transmission path.

Abstract: An electronic device is configured to determine a first location of a first device (12) and a second location of a second device (14). The first location and the second location are obtained using a beacon, e.g. satellite, navigation system. The electronic device is further configured to determine first constellation information representing a beacon, e.g. satellite, constellation used for obtaining the first location and second constellation information representing a beacon, e.g. satellite, constellation used for obtaining the second location, determine whether the first constellation information and the second constellation information match, and determine and use a distance between the first location and the second location if the first constellation information and the second constellation information are determined to match. This distance can be used to determine pole tilt, for example.

Abstract: A method (500) for monitoring sound within an environment (100) using a lighting network (300, 400) comprising a processor (26, 220), a plurality of sound sensors (32), a plurality of environmental sensors (36), and a plurality of lighting units (10), includes the steps of: obtaining (520), by at least one of the plurality of sound sensors, real-time sound data from within the environment; obtaining (530), by at least one of the plurality of environmental sensors, real-time environmental data from within the environment; combining (560) the real-time sound data, the real-time environmental data, and topographical information about the environment to create a propagation map of the sound data; and localizing (570), from the propagation map of the sound data, a source of the sound data.

Abstract: A lighting unit (10) for estimating an amount of daylight in a lighting environment includes: a light source (12); a filter (330) configured to block incident light in a first wavelength range, the incident light comprising both daylight and non-daylight incident light; a camera (32) configured to receive the filtered incident light and generate a detection signal (342), the filtered incident light being outside the first wavelength range; and a controller (22) in communication with the camera and configured to process the detection signal to estimate the amount of daylight incident light.

Abstract: A method (300) for characterizing a lighting environment using thermal imaging includes the steps of: providing (310) a lighting unit (10) comprising a light source (12), a thermal imager (32), and a controller (22); obtaining (330), using the thermal imager, one or more thermal images of one or more surfaces (52) within the lighting environment; extracting (340), by the controller using the one or more thermal images, a thermal shadow (54) on one or more surfaces within the lighting environment; determining (360), from the thermal shadow, a depth queue for an object (52) associated with the thermal shadow; and characterizing (370), by the controller using the determined depth queue, the object.

Abstract: Methods, systems, and apparatus are described herein for adjusting one or more lighting properties based on skill level of one or more players of a game. In various embodiments, (502) a skill disparity between at least two players of a game may be identified (502). A lighting scheme may be selected (504) to reduce an impact the skill disparity has on an outcome of the game. One or more light sources (104, 304) may be operated (508) to emit light in accordance with the lighting scheme.

Abstract: A method (500) for monitoring sound within an environment (100) using a lighting network (300, 400) comprising a processor (26, 220), a plurality of sound sensors (32), a plurality of environmental sensors (36), and a plurality of lighting units (10), includes the steps of: obtaining (520), by at least one of the plurality of sound sensors, real-time sound data from within the environment; obtaining (530), by at least one of the plurality of environmental sensors, real-time environmental data from within the environment; combining (560) the real-time sound data, the real-time environmental data, and topographical information about the environment to create a propagation map of the sound data; and localizing (570), from the propagation map of the sound data, a source of the sound data.

Abstract: The described embodiments relate to systems, methods, and apparatuses for identifying when one or more components of a luminaire (114) in a network of luminaires has malfunctioned as a result of an electrical event (112), and determining how neighboring luminaires (106) have been affected. An electrical event such as an overvoltage or transient can damage component(s) of luminaires that are closest to a point of origin of the electrical event. However, luminaires located further away from the point of origin can also be affected. Estimating such damage can be useful for planning maintenance of the luminaires and/or their components. Furthermore, when luminaires are equipped with the ability to collect data (220) related to electrical events, such as lightning strikes, their collected data can be provided as a service for assessing damage to nearby connected devices, and predicting future electrical events.

Abstract: A control system for a stadium lighting system comprising a plurality of luminaires installed within the stadium to illuminate a pitch within the stadium in accordance with a light plan containing aiming information for each luminaire is disclosed. The control system comprises a data storage device storing the light plan and a controller communicatively coupled to the data storage device, the controller being responsive to object tracking information for an object travelling across the pitch. The controller is adapted to determine a direction of travel of the object from the object tracking information; evaluate the aiming information for each luminaire to identify if at least one luminaire is arranged to generate a luminous output in an aiming direction coinciding with said direction of travel; and generate a dimming level adjustment signal for the at least one identified luminaire to reduce the intensity of said luminous output.

Abstract: The described embodiments relate to systems, methods, and apparatuses for estimating luminaire lifetimes using extrapolated sensor data. During a lifetime of a luminaire (108), a sensor (206) of the luminaire can become inoperable well before the entire luminaire becomes inoperable. In order to estimate when the luminaire will become inoperable, sensor data (504) should be continually tracked even after the sensor fails. In order to continue obtaining sensor data after the sensor fails, the sensor data can be extrapolated based on a correlation between previously received sensor data and other environmental data. The extrapolated sensor data can be tracked after the sensor becomes inoperable so that estimates of luminaire lifetime can be more accurate, compared to not having any sensor data. In this way, maintenance of luminaires can be scheduled according to predictions of luminaire lifetimes, rather than the occurrence of a luminaire failure.

Abstract: A method (300) for characterizing a lighting environment using thermal imaging includes the steps of: providing (310) a lighting unit (10) comprising a light source (12), a thermal imager (32), and a controller (22); obtaining (330), using the thermal imager, one or more thermal images of one or more surfaces (52) within the lighting environment; extracting (340), by the controller using the one or more thermal images, a thermal shadow (54) on one or more surfaces within the lighting environment; determining (360), from the thermal shadow, a depth queue for an object (52) associated with the thermal shadow; and characterizing (370), by the controller using the determined depth queue, the object.

Abstract: A method (400) for estimating a trajectory of an object (58) using thermal imaging, the method comprising the steps of: (i) obtaining (420), using a thermal imager (32), a thermal image (54) of one or more surfaces (50) within an environment (52); (ii) detecting (440), within a single obtained thermal image, a heat signature (56) from an object on the one or more surfaces; (iii) extracting (450), from the single obtained thermal image, a trajectory of the object along the one or more surfaces within the image; and (iv) estimating (460), from the extracted trajectory, a trajectory of the object within the environment.

Abstract: A method (300) for measuring illumination by a lighting unit (10) of a target surface (50) within a lighting environment (100) includes the steps of: illuminating (320), with a light source (12) of the lighting unit, the target surface; detecting (330), with a light sensor (32), a light intensity for a plurality of locations of the target surface; detecting (340) parameter of the lighting environment; selecting (350), by a controller of the lighting unit, a subset of the plurality of light intensities based on the detected parameter of the lighting environment; and estimating (360), using the selected subset of light intensities, a lux of the target surface.