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    Lighting control system and method with battery powered control devices
    2.
    发明授权
    Lighting control system and method with battery powered control devices 有权

    公开(公告)号：US09913353B1

    公开(公告)日：2018-03-06

    申请号：US15375955

    申请日：2016-12-12

    Applicant: Crestron Electronics, Inc.

    Inventor： Evan Ackmann ,  Russikesh Kumar

    IPC: H05B37/02 ,  H04L12/28 ,  H05B33/08 ,  G08B21/18

    CPC classification number: H05B37/0272 ,  H04L12/2827 ,  H05B33/0854

    Abstract: A lighting control system for operating lighting in a room is provided. The lighting control system may comprise a load controller, sensors, and battery powered lighting control devices, such as switches, dimmers, and/or keypads. The load controller is configured for controlling the operation of a lighting load in response to messages received from the lighting control devices and sensors over a wireless network. The battery operated lighting control device is configured for detecting a low battery level, transmitting a low battery message to the load controller, and entering into a low battery mode during which it ceases transmitting any messages to the load controller until the battery is replaced. In response to the low battery message received from at least one lighting control device, the load controller is configured for entering into a low battery mode during which it maintains the lighting load turned on. The load controller is configured for exiting the low battery mode and resuming normal operation upon receipt of a subsequent message from the at least one lighting control device.

    Light emitting diode driver and method of controlling thereof having a dimmed input sense circuit
    3.
    发明授权
    Light emitting diode driver and method of controlling thereof having a dimmed input sense circuit 有权
    发光二极管驱动器及其控制方法具有调光输入检测电路

    公开(公告)号：US09572217B2

    公开(公告)日：2017-02-14

    申请号：US15084889

    申请日：2016-03-30

    Applicant: Crestron Electronics, Inc.

    Inventor： Evan Ackmann

    IPC: H05B37/02 ,  H05B33/08

    CPC classification number: H05B33/0845 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0848

    Abstract: Devices, systems, software, and methods for control of light emitting diodes (LEDs) via an LED driver circuit that receives a dimmed AC input signal from a dimmer and generates an output signal to power and dim an LED element. The LED driver circuit comprises a dimmed input sense circuit, a microcontroller, and a power supply circuit. The power supply circuit generates a power supply from the dimmed AC input signal for powering the LED driver circuit. The dimmed input sense circuit detects an incoming duty cycle (Din) of the dimmed AC input signal. The microcontroller stores one or more dimming level parameters, receives the detected incoming duty cycle (Din) from the dimmed input sense circuit, and generates an output duty cycle (Dout) based on the detected incoming duty cycle (Din) and the one or more dimming level parameters. The LED driver circuit generates the output signal using the generated output duty cycle (Dout) for powering the LED element at a generated dimming level.

    Abstract translation: 用于通过LED驱动器电路来控制发光二极管（LED）的装置，系统，软件和方法，其接收来自调光器的调光AC输入信号并产生输出信号以对LED元件供电和调光。 LED驱动器电路包括调光输入检测电路，微控制器和电源电路。 电源电路从调光的AC输入信号产生电源，为LED驱动电路供电。 调光输入检测电路检测调光的AC输入信号的进入占空比（Din）。 微控制器存储一个或多个调光电平参数，从调光输入检测电路接收检测到的进入占空比（Din），并且基于检测到的进入占空比（Din）和一个或多个存储器产生输出占空比（Dout） 调光级参数。 LED驱动器电路使用所产生的输出占空比（Dout）产生输出信号，以在所产生的调光电平下为LED元件供电。

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