Object detection system and method

    公开(公告)号:US11143749B2

    公开(公告)日:2021-10-12

    申请号:US15313634

    申请日:2015-05-05

    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.

    Stadium lighting aiming system and method

    公开(公告)号:US10234117B2

    公开(公告)日:2019-03-19

    申请号:US15326418

    申请日:2015-07-06

    Abstract: A lighting aiming system for aiming a stadium lighting system, the lighting aiming system comprising: a luminaire (5), the luminaire having a mounting position and an orientation and configured to generate a light beam along an optical axis; a camera (1) configured to capture an image, the camera (1) coupled to the luminaire and having a defined relationship between a field of view of the camera and the optical axis; a memory (31) configured to store lighting information comprising a desired aiming location of the luminaire, and the memory further configured to store feature information comprising an expected location of at least one feature; a processor (33) configured to determine and output aiming information based on the feature information, lighting information and image to enable a determination on whether the luminaire is correctly aimed.

    Position estimation of light source of a luminaire from light footprint

    公开(公告)号:US10210426B2

    公开(公告)日:2019-02-19

    申请号:US15121787

    申请日:2015-01-28

    Abstract: The invention relates to a method for determining an unknown position, i.e. height and/or orientation, of a light source within a locality. The determination is based on a first image of a scene within the locality acquired by a camera in such a manner as to contain a light footprint of light emitted by the light source from the unknown position. The method includes steps of processing the first image to determine one or more characteristics of the at least the portion of the light footprint within the first image, comparing the determined characteristics with one or more corresponding known characteristics of a light footprint of light emitted by the light source from a known position to determine a deviation between the determined and the known characteristics, and determining the unknown position of the light source based on the determined deviation.

    Thermal sensing
    6.
    发明授权

    公开(公告)号:US10136502B2

    公开(公告)日:2018-11-20

    申请号:US15111924

    申请日:2014-12-30

    Abstract: A controller comprising: an output for controlling one or more outdoor lighting device to illuminate an outdoor environment; an input for receiving temperature information from a temperature sensor comprising a plurality of temperature sensing elements; and a control module. The control module is configured to: use the temperature information received from the temperature sensor to detect motion in a sensing region of the temperature sensor and control the one or more lighting device based on the detected motion, and additionally use the temperature information received from the temperature sensor to detect conditions of the environment in the sensing region and further control the one or more lighting device based on the detected conditions.

    Multi-modal sensing
    7.
    发明授权

    公开(公告)号:US09801258B2

    公开(公告)日:2017-10-24

    申请号:US15127375

    申请日:2015-03-06

    CPC classification number: H05B37/0227 H05B37/0245 Y02B20/44

    Abstract: A controller comprising: an output for controlling lighting device(s)to illuminate an environment; an input for receiving a signal output from a sensor of a first type and a sensor of a second type, wherein the sensor of the second type consumes more power, but provides more accurate motion detection than the sensor of the first type; and a control module configured to detect motion of objects in the environment in response to receiving at least one of the signals, and control the lighting device(s) based on detected motion of objects. The control module configured to disable the sensor of the second type, and use the sensor of the first type to detect motion of objects when higher traffic density of objects passing through the environment occurs, and use at least the sensor of the second type to detect motion of objects when lower traffic density of objects occurs.

    Illumination controller
    8.
    发明授权

    公开(公告)号:US09603223B2

    公开(公告)日:2017-03-21

    申请号:US14912128

    申请日:2014-08-08

    Abstract: An illumination controller is provided. The illumination controller comprises a light sensor device having a first light sensor arrangement configured to sense light within a first spectral range including non-visible light and excluding a sub-range constituted by at least a major part of the visible light, and a second light sensor arrangement configured to sense light within a second spectral range including at least a part of said sub-range. Furthermore, the illumination controller comprises a control unit connected with the light sensor device and arranged to determine an amount of daylight on the basis of an output signal of the first light sensor arrangement and a predetermined function, which characterizes the relationship between the spectral power distribution of the infrared spectrum of daylight and the spectral power distribution of the visible spectrum of daylight, and to determine an amount of artificial light on the basis of an output signal of the second light sensor arrangement and the output signal of the first light sensor arrangement. The illumination controller is arranged to control illumination on the basis of said amounts of daylight and artificial light.

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