INDOOR LIGHTING CONTROL BASED ON OUTDOOR LIGHT

    公开(公告)号:US20210212177A1

    公开(公告)日:2021-07-08

    申请号:US17207000

    申请日:2021-03-19

    Abstract: A lighting fixture includes a light source that emits an illumination light and a receiver configured to receive a lighting control message from a photo sensor device. The lighting fixture further includes a lighting controller configured to adjust the illumination light based on the lighting control message. Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light.

    White light tuning
    3.
    发明授权

    公开(公告)号:US10863599B2

    公开(公告)日:2020-12-08

    申请号:US16677300

    申请日:2019-11-07

    Abstract: A lighting device includes a first string of light emitting diodes (LEDs) configured to emit a warm white light having a warm Correlated Color Temperature (CCT). The lighting device further includes a second string of LEDs configured to emit a cool white light having a cool CCT. The lighting device also includes green light LEDs that emit a green light. A flux of the green light is controlled based on a flux of the cool white light or a flux of the warm white light. The flux of the warm white light and the flux of the cool white light change proportionally with respect to each other.

    Indoor lighting control based on outdoor light

    公开(公告)号:US10959299B2

    公开(公告)日:2021-03-23

    申请号:US15908537

    申请日:2018-02-28

    Abstract: A lighting fixture includes a light source that emits an illumination light and a receiver configured to receive a lighting control message from a photo sensor device. The lighting fixture further includes a lighting controller configured to adjust the illumination light based on the lighting control message. Adjusting the illumination light by the lighting controller includes changing a Correlated Color Temperature (CCT) of the illumination light.

    Low cyanosis observation index luminaire

    公开(公告)号:US11369286B2

    公开(公告)日:2022-06-28

    申请号:US17151549

    申请日:2021-01-18

    Abstract: A lighting device, comprises a light source configured to provide a low Cyanosis Observation Index (COI) white light having a total flux, the light source comprising a first group of LEDs configured to provide a wide blue light, a second group of LEDs configured to provide a wide green light, and a third group of LEDs configured to provide a wide red light, wherein the low COI white light is a combination of at least the wide blue light, the wide green light, and the wide red light, wherein a current provided to the light source is distributed among the first group of LEDs, the second group of LEDs, and the third group of LEDs such that the wide blue light contributes 7 percent to 9 percent of the total flux, the wide green light contributes 62 percent to 76 percent of the total flux, and the wide red light contributes 20 percent to 26 percent of the total flux, and wherein a COI of the low COI white light is less than 1.

    Location services using multiple light fixtures

    公开(公告)号:US11115950B2

    公开(公告)日:2021-09-07

    申请号:US16283437

    申请日:2019-02-22

    Abstract: A system can include an object having a communication device, where the communication device of the object broadcasts a first signal from a first location within a volume of space at a first time. The system can also include a first electrical device and a second electrical device that receives the first signal in the volume of space. The system can also include a controller communicably coupled to the first electrical device and the second electrical device, where the controller determines a first strength of the first signal received by the first receiver, determines a second strength of the first signal received by the second receiver, scales the first signal relative to the second signal based on the first strength and the second strength, and determines a location of the object in the volume of space based on scaling the first signal relative to the second signal.

    Transient Surge Monitoring
    8.
    发明申请

    公开(公告)号:US20210006064A1

    公开(公告)日:2021-01-07

    申请号:US16503311

    申请日:2019-07-03

    Abstract: A surge monitoring circuit for detecting transient spikes in an input voltage includes a voltage divider circuit that generates a divider output voltage from the input voltage, a reference voltage generator circuit that generates reference voltages, and a comparator circuit that generates comparator signals by comparing the divider output voltage to the reference voltages. The surge monitoring circuit further includes a processor configured to predict, at least based on the comparator signals, an expected failure of a surge suppressor circuit that suppresses the transient spikes, where the comparator signals indicate detections of divider output transient spikes in the divider output voltage. The divider output transient spikes correspond to transient spikes in the input voltage, where the divider output transient spikes have a higher voltage than the one or more reference voltages.

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