OCCUPANCY BASED LIGHTING CONTROL TECHNOLOGY AND ITS APPLICATION THEREOF

    公开(公告)号:US20180012467A1

    公开(公告)日:2018-01-11

    申请号:US15709589

    申请日:2017-09-20

    Applicant: CHIA-TEH CHEN

    Inventor: CHIA-TEH CHEN

    Abstract: This disclosure relates to a method of detecting an occupancy state of a living space for controlling lighting apparatus. The method comprises using a motion sensor to send wave signal and detect echoed signal reflected from a moving human body and using a control circuitry operated with a software program to analyze the echoed signal for establishing a numerical value account. In referring to preset parameters, the software program judges the echoed signal by analyzing time duration and frequency pattern of the echoed signal as an incoming motion, an outgoing motion or a local random motion, such that the numerical value account is accordingly updated to represent actual occupant number for activating the controller circuitry to turn on or turn off the lighting apparatus.

    Electronic device and method for controlling electronic device

    公开(公告)号:US09854648B2

    公开(公告)日:2017-12-26

    申请号:US15138872

    申请日:2016-04-26

    Inventor: Yoshio Sekiyama

    Abstract: An electronic device including a submersion detector, illuminants, a lighting circuit, a controller, and an orientation detector. The submersion detector detects submersion of the device and detect retrieval of the device. The illuminants are arranged inside a casing such that at least one of the illuminants is visible from above water when the device is submerged in any submersion orientation. The lighting circuit lights up at least one of the illuminants in response to an input of a lighting signal. The controller generates and outputs the lighting signal to the lighting circuit for a period of time from the submersion at least until the retrieval so as to light up the at least one of the illuminants. The orientation detector detects a submersion orientation of the device. Only the at least one of the illuminants that is visible from above water lights up, in accordance with the detected submersion orientation.

    Lighting device and method for operating a lighting device

    公开(公告)号:US09854636B2

    公开(公告)日:2017-12-26

    申请号:US14909501

    申请日:2013-11-25

    CPC classification number: H05B33/0854 F21V29/67 F21V29/70 F21V29/90

    Abstract: The present invention refers to a lighting device (10) and a method of operating this lighting device (10). A lighting module (13) having a light element series connection (15) of several semiconductor light elements (14) is connected to the output (12) of a drive circuit (11). The control means (20) is provided which is configured to adapt a heating condition if a heating requirement is fulfilled. In the heating condition a heating means (26) is activated by the control means (20) to heat the lighting module. The heating requirement is fulfilled when the temperature (T) of the lighting module (13) drops down to a minimum temperature value (Tmin). In so doing an undesired increase of the forward voltage (Vf) of the light element series connection (15) can be avoided.

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