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公开(公告)号：US11550055B2
公开(公告)日：2023-01-10
申请号：US17035685
申请日：2020-09-29
发明人： Zhihua Chen , Letian Liu , Chunxin Qiu , Xujun Tan , Xiaojun Zhou
摘要： The present disclosure provides a range-finding system capable of data communication. The range-finding system includes a rangefinder for acquiring ranging data, a magnetic ring unit having at least two communication channels, and a data processing and control unit. Each communication channel includes a magnetic ring. The magnetic ring unit transmits the ranging data as downlink data from the rangefinder to the data processing and control unit via one or more of the communication channels.
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公开(公告)号：US10823853B2
公开(公告)日：2020-11-03
申请号：US15930426
申请日：2020-05-12
发明人： Zhihua Chen , Letian Liu , Chunxin Qiu , Xujun Tan , Xiaojun Zhou
IPC分类号： G01S17/88 , G01S7/481 , H04B10/40 , H04B10/112 , G01S7/487
摘要： The present disclosure provides a range-finding system capable of data communication. The range-finding system includes a rangefinder for acquiring ranging data, a magnetic ring unit having at least two communication channels, and a data processing and control unit. Each communication channel includes a magnetic ring. The magnetic ring unit transmits the ranging data as downlink data from the rangefinder to the data processing and control unit via one or more of the communication channels.
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公开(公告)号：US11686825B2
公开(公告)日：2023-06-27
申请号：US17036231
申请日：2020-09-29
发明人： Chunxin Qiu , Letian Liu
CPC分类号： G01S7/4863 , G01S7/4813 , G01S7/4815 , G01S7/4816 , G01S17/10 , G01S17/42 , G01S7/4868
摘要： A multiline lidar includes: a laser emitting array (110) configured to emit multi-beam laser; a laser receiving array (120) configured to receive multiplexed laser echoes reflected by a target object; an echo sampling device (130) configured to sample the multiplexed laser echo in a time division multiplexing manner and output a sampling data stream; a control system (140) coupled to the laser emitting array (110), the laser receiving array (120), and the echo sampling device (130), respectively; the control system (140) is configured to control operations of the laser emitting array (110) and the laser receiving array (120), and determine measurement data according to the sampling data stream; and an output device (150) configured to output the measurement data.
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公开(公告)号：US10761191B2
公开(公告)日：2020-09-01
申请号：US16597814
申请日：2019-10-09
发明人： Chunxin Qiu , Letian Liu
IPC分类号： G01S7/48 , G01S7/481 , G01S17/931
摘要： Embodiments of the disclosure provide a LiDAR assembly. The LiDAR assembly includes a central LiDAR device configured to detect an object at or beyond a first predetermined distance from the LiDAR system and an even number of multiple auxiliary LiDAR devices configured to detect an object at or within a second predetermined distance from the LiDAR system. The LiDAR assembly also includes a mounting apparatus configured to mount the central and auxiliary LiDAR devices. Each of the central and auxiliary LiDAR devices is mounted to the mounting apparatus via a mounting surface. A first mounting surface between the central LiDAR device and the mounting apparatus has an angle with a second mounting surface between one of the auxiliary LiDAR devices and the mounting apparatus.
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公开(公告)号：US10705189B2
公开(公告)日：2020-07-07
申请号：US16693157
申请日：2019-11-22
发明人： Chunxin Qiu , Letian Liu
IPC分类号： G01C3/08 , G01S7/481 , G01S7/4863 , G01S17/931
摘要： The present disclosure provides a multi-beam LiDAR system. The multi-beam LiDAR system includes a transmitter having an array of laser emitters. Each laser emitter is configured to emit a laser beam. The laser emitter array includes a first type of laser emitter board and a second type of laser emitter board. The second type of laser board includes two or more laser emitters. The second type of laser emitter board is not parallel to a predefined plane.
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公开(公告)号：US11835662B2
公开(公告)日：2023-12-05
申请号：US17458393
申请日：2021-08-26
发明人： Chunxin Qiu , Letian Liu
IPC分类号： G01S7/497 , G01S17/931 , G01S17/894 , G01S7/481
CPC分类号： G01S7/4972 , G01S7/4811 , G01S17/894 , G01S17/931
摘要： The present disclosure provides a multi-beam LiDAR system. The multi-beam LiDAR system includes a transmitter having an array of laser emitters. Each laser emitter is configured to emit a laser beam. The multi-beam LiDAR system also includes a receiver having an array of photodetectors. Each photodetector is configured to receive at least one return beam that is reflected by an object from one of the laser beams. The laser emitter array includes a plurality of laser emitter boards perpendicular to a horizontal plane. Each laser emitter board has a plurality of laser emitters. The plurality of laser emitters in the laser emitter array are staggered along a vertical direction. The photodetector array includes a plurality of columns of photodetectors. One of the laser emitter boards corresponds to one column of photodetectors.
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8.发明授权公开(公告)号：US11703590B2
公开(公告)日：2023-07-18
申请号：US16758848
申请日：2019-11-18
发明人： Letian Liu , Shen Jiang , Chunxin Qiu
CPC分类号： G01S17/08 , G01S7/4814 , G01S7/4816
摘要： The present application relates to a Lidar that includes a laser transmitter to emit a laser beam; an optical processing circuit. The optical processing circuit is configured to receive the laser beam reflected from a target object and convert the reflected laser beam to a photocurrent signal, and convert the photocurrent signal from an optical receiver to a voltage signal. The Lidar also includes a gain control circuit, connecting to the optical processing circuit; and a controller, connecting to the gain control circuit, to adjust a gain of the optical processing circuit via the gain control circuit and based on an amplitude of the voltage signal.
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公开(公告)号：US11506760B2
公开(公告)日：2022-11-22
申请号：US16396753
申请日：2019-04-28
发明人： Chunxin Qiu , Letian Liu
摘要： The present disclosure provides a lidar and a lidar control method. The lidar includes a plurality of laser transmitters configured to transmit laser light, and an oscillating mirror configured to change a direction of a light path of the transmitted laser light. The lidar control method includes transmitting, by a plurality of transmitters, laser light; and changing, by an oscillating mirror, a direction of a light path of the transmitted laser light. The plurality of laser transmitters constitute a laser transmitter array of M rows and N columns, where M is an integer greater than or equal to 2 and N is an integer greater than or equal to 2.
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公开(公告)号：US20200096617A1
公开(公告)日：2020-03-26
申请号：US16616642
申请日：2017-11-28
发明人： Chunxin Qiu
IPC分类号： G01S7/481 , G01S7/4863 , G02B26/10 , G02B27/30
摘要： The present application discloses a laser detection and ranging (LIDAR) device that includes: a laser emitter configured to emit an outgoing laser and a two-dimensional tilting mirror configured to change an optical path direction of the outgoing laser in a vertical dimension and a horizontal dimension. A LIDAR control method is also disclosed. The method include the steps of emitting, by a laser emitter, outgoing laser and changing, by a two-dimensional tilting mirror, an optical path direction of the outgoing laser in a vertical dimension and a horizontal dimension.
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