DISTANCE MEASURING APPARATUS AND LIGHT EMITTING DEVICE FOR DISTANCE MEASUREMENT

    公开(公告)号:US20240345222A1

    公开(公告)日:2024-10-17

    申请号:US18432029

    申请日:2024-02-04

    Inventor: Daisuke IGUCHI

    CPC classification number: G01S7/4815 G01S7/4816 G01S17/08

    Abstract: A distance measuring apparatus includes: plural light emitters that irradiate a target whose distance is to be measured with light and are arranged along a predetermined first direction; an optical unit that directs light so that in a case where one light emitter emits light, a light amount corresponding to a central part of the light emitter and a light amount of a boundary part with an adjacent light emitter are different and in a case where plural light emitters emit light, the light amount corresponding to the central part of the light emitter and the light amount corresponding to the boundary part are equal; a light emission control unit that controls ON and OFF of the light emitters, the light emission control unit controlling the light emitters in modes including a first lighting mode in which a combination of two or more light emitters along the first direction that is ON and a combination of two or more light emitters along the first direction that is OFF alternate, a first inversion mode in which ON and OFF are reverse to those in the first lighting mode, a second lighting mode in which a combination of two or more light emitters that is ON and a combination of two or more light emitters that is OFF alternate, the combination in the second lighting mode being shifted by at least one light emitter from the combination in the first lighting mode in the first direction, and a second inversion mode in which ON and OFF are reverse to those in the second lighting mode; and a distance measurement unit that, in a case where plural light receiving regions are provided corresponding to each of the light emitters along the first direction in a region where a light receiving unit receives light from the target, performs distance measurement on a basis of a light reception result in the first lighting mode and a light reception result in the first inversion mode in a light receiving region excluding a light receiving region corresponding to a first boundary part located at a boundary between ON and OFF in the first lighting mode, and performs distance measurement on a basis of a light reception result in the second lighting mode and a light reception result in the second inversion mode in a light receiving region excluding a light receiving region corresponding to a second boundary part located at a boundary between ON and OFF in the second lighting mode.

    Method for coupling co-ordinate systems, and computer-assisted system

    公开(公告)号:US12118745B2

    公开(公告)日:2024-10-15

    申请号:US17526007

    申请日:2021-11-15

    CPC classification number: G06T7/74 G01S17/08 G01S17/931 G06T2207/30244

    Abstract: A method for coupling a relative coordinate system of a relative automatic position finding system to an absolute coordinate system of an absolute localization system includes capturing optically identifiable identifiers of the localization system using a light sensor of a mobile apparatus of the relative automatic position finding system. The method further includes ascertaining a relative position for each of the captured optically identifiable identifiers in the relative coordinate system of the relative automatic position finding system, retrieving absolute positions of the optically identifiable identifiers in the absolute coordinate system, determining a position of the light sensor in the absolute coordinate system, and coupling, based on the determined position of the light sensor, the relative coordinate system to the absolute coordinate system.

    Self-moving device and distance measuring method thereof

    公开(公告)号:US12105516B2

    公开(公告)日:2024-10-01

    申请号:US17773010

    申请日:2020-11-28

    Inventor: Jiajia Sun

    CPC classification number: G05D1/0238 G01S17/08

    Abstract: A self-moving device includes a body, a walking assembly arranged on the body, and a control system arranged in the body. The self-moving device further includes an optical receiving device and at least two optical emitting devices arranged on the body. Paths of emitted light emitted by the at least two optical emitting devices are different. The optical receiving device is adapted to receive a reflected light formed after the emitted light emitted by at least one of the optical emitting devices hits an obstacle. A distance measuring method of the self-moving device is also disclosed.

    DATA RESOLUTION IN LIDAR SYSTEMS
    9.
    发明公开

    公开(公告)号:US20240302497A1

    公开(公告)日:2024-09-12

    申请号:US18119274

    申请日:2023-03-08

    Inventor: Majid Boloorian

    CPC classification number: G01S7/4808 G01S7/4817 G01S17/08 G01S17/58

    Abstract: Operating the LIDAR system includes transmitting a system output signal from the LIDAR system such that a sample region is illuminated by the system output signal. Different portions of the system output signal are transmitted during different data periods. The method also includes combining light that returns to the LIDAR system from the system output signal with light from a reference signal so as to generate beating signals that are each associated with a different one of the data periods. A set of multiple candidate frequencies is generated for each of the data periods. Each of the candidate frequencies for a data period represents a possible beat frequency for the beating signal associated with the data period. The method further includes using the candidate frequencies for a check one of the data periods to identify which of the candidate frequencies for a subject one of the data periods is the beat frequency for the beating signal associated with the subject data period.

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