FRUSTUM-DESIGNED RADAR REFLECTOR FOR ELEVATOR POSITIONING

    公开(公告)号:US20230137593A1

    公开(公告)日:2023-05-04

    申请号:US18049023

    申请日:2022-10-24

    Abstract: Various embodiments are directed to a radar reflector configured for radar-based distance measurements for determining a position of an elevator car within an elevator shaft. The radar reflector comprises three or more triangular panels defining a pyramidal frustum volume having a base plane and an upper plane that are parallel. The pyramidal frustum volume is configured to directly reflect radar signals originating from a radar transceiver back to the radar transceiver based at least in part on the triangular panels being mutually perpendicular at a projected apex above the upper plane. The reflected radar signals reflected by the radar reflector have substantially parallel trajectories with the original, pre-reflected radar signals emitted by the radar transceiver. The triangular panels of the radar reflector being mutually perpendicular advantageously maintains direct reflection of radar signals in spite of any potential horizontal tilt of the radar reflector to a certain extent.

    SPATIAL DIVISION STRUCTURE AND LIGHT REFLECTION DEVICE AND LIDAR SCANNING SYSTEM HAVING SAME

    公开(公告)号:US20230035782A1

    公开(公告)日:2023-02-02

    申请号:US17878908

    申请日:2022-08-02

    Abstract: Disclosed is a spatial division structure. A spatial division structure according to an exemplary embodiment of the present invention is mounted to divide a reflective surface of a rotary reflection structure provided in the form of a polyhedron and configured to reflect light and includes a blocking plate having therein an insertion space into which the rotary reflection structure is inserted, the blocking plate having a board shape extending in a direction perpendicular to a rotation axis of the rotary reflection structure from the reflective surface to divide the reflective surface into a first reflective surface and a second reflective surface, and frames configured to fix a position of the blocking plate to the reflective surface, in which the frames include one or more first frames connected to the blocking plate and positioned at a lateral side of the first reflective surface, the one or more first frames extending in a direction of the rotation axis of the rotary reflection structure, and one or more second frames each connected to one end of each of one or more first frames and positioned at an upper side of the first reflective surface, the one or more second frames extending to cross the one or more first frames.

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