LIGHT-BASED VEHICLE POSITIONING FOR MOBILE TRANSPORT SYSTEMS

    公开(公告)号:US20210082142A1

    公开(公告)日:2021-03-18

    申请号:US17075009

    申请日:2020-10-20

    Abstract: Techniques and architecture are disclosed for mobile transport systems configured to determine vehicle positions within an area using light-based communication signals. The system includes a plurality of luminaires located in an area and configured to transmit luminaire position data recognizable by a sensor disposed on a vehicle. The sensor receives an image of a luminaire including a light-based communication signal encoded with luminaire position data. Luminaire position data can be combined with luminaire layout information to determine a known location of the luminaire. A vehicle position relative to the known luminaire location can be determined based on mathematical relationships. Vehicle orientation relative to the area can be determined based an asymmetric fiducial pattern or multiple known luminaire locations. The system can combine a vehicle position relative to a known luminaire location with vehicle orientation relative to the area to determine a vehicle position relative to the area.

    Output current configuration based on load connection

    公开(公告)号:US10588186B2

    公开(公告)日:2020-03-10

    申请号:US15641318

    申请日:2017-07-04

    Abstract: A driver port that provides selectable output currents based on connections thereto, and a driver including the same, is provided. A plurality of shunt resistors are connected in series between a negative output of a driver and a ground. A driver port having a plurality of connection points is provided, each respective connection point connected to a different connection between two of the plurality of shunt resistors. A load including one or more solid state light sources is capable of being connected between one of the connection points of the driver port and a positive output of the driver.

    Adjustable Voltage Constant Current Light Emitting Diode (LED) Driver for Automotive Headlights

    公开(公告)号:US20200008276A1

    公开(公告)日:2020-01-02

    申请号:US16486532

    申请日:2017-02-27

    Inventor: Alireza Safaee

    Abstract: Various embodiments include a voltage adjusting block (VAB) coupled to a light emitting diode (LED) string. The VAB includes a first switch having a first lead connected to a voltage input, and having a second lead, the first switch having a controllable duty cycle, a first diode having a cathode connected to the second lead of the first switch, and having an anode, a first inductor having a first lead connected to the cathode of the first diode, and having a second lead, and a first capacitor having a first lead connected to the anode of the first diode and having a second lead connected to the second lead of the first inductor. The VAB may provide a variable voltage across the anode of the first diode and the second lead of the first capacitor dependent upon a number of LEDs in the LED string being turned on.

    COMMISSIONING A LUMINAIRE WITH LOCATION INFORMATION

    公开(公告)号:US20190190600A1

    公开(公告)日:2019-06-20

    申请号:US16281346

    申请日:2019-02-21

    CPC classification number: H04B10/116 H04B10/1149 H04L67/02 H04W64/006

    Abstract: Techniques are disclosed for programming a luminaire with location information, referred to herein as commissioning. Location information may include relative location information (e.g., the position of the luminaire relative to a reference point) and/or absolute location information (e.g., global coordinates for the luminaire). A commissioned luminaire can be configured to emit its location information via light-based communication (LCom). In some cases, the luminaire can be commissioned manually, by hard coding the luminaire with its location either at the luminaire itself or using a device (e.g., a smartphone, tablet, or a dedicated luminaire commissioning device) to program the luminaire with location information. In some cases, the luminaire can be commissioned automatically. In some cases, the luminaire may be configured to provide visual, aural, or tactile feedback to indicate that the luminaire has not received location data or that the luminaire has been moved.

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