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公开(公告)号：US20240019555A1
公开(公告)日：2024-01-18
申请号：US18219703
申请日：2023-07-09
发明人： Shen JIANG
IPC分类号： G01S7/4861 , G01S7/48 , G01S7/481 , G01S7/484
CPC分类号： G01S7/4861 , G01S7/4808 , G01S7/4815 , G01S7/484
摘要： The present application relates to a method and device for laser detection, and a non-transitory computer-readable storage medium. The method includes: emitting a secondary emergent laser in a current detection cycle; receiving and analyzing an echo laser corresponding to the secondary emergent laser to obtain a detection result; determining an operation mode of a primary emergent laser in a next detection cycle according to the detection result; and emitting the primary emergent laser in the next detection cycle according to the operation mode of the primary emergent laser.
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公开(公告)号：US20230288538A1
公开(公告)日：2023-09-14
申请号：US18118785
申请日：2023-03-08
发明人： Shen JIANG
IPC分类号： G01S7/48 , G01S7/481 , G01S17/931
CPC分类号： G01S7/4808 , G01S7/4814 , G01S17/931 , G01S7/4816
摘要： This application provides a laser receiving system, which includes a receiver, a transimpedance amplification circuit, and at least one measurement circuit. The at least one measurement circuit includes a first measurement circuit, where the receiver is connected to a terminal of the transimpedance amplification circuit, and is configured to receive an echo laser beam and output an echo signal. The transimpedance amplification circuit has a terminal connected to the receiver and another terminal separately connected to each of the at least one measurement circuit, and is configured to perform transimpedance amplification on the echo signal. The first measurement circuit is configured to output a sampling signal after shaping the echo signal.
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公开(公告)号：US20230400558A1
公开(公告)日：2023-12-14
申请号：US18235877
申请日：2023-08-20
发明人： Shen JIANG
IPC分类号： G01S7/4861 , G01S7/487 , G01S7/489 , G01S17/10
CPC分类号： G01S7/4861 , G01S7/487 , G01S7/489 , G01S17/10
摘要： The present application provides a lidar receiving apparatus, a lidar system, a laser ranging method, a laser ranging controller, and a computer readable storage medium. The lidar receiving apparatus includes: a photodetector, which is configured to receive a reflected laser signal and to convert the reflected laser signal into a current signal when a bias voltage of the photodetector is greater than a breakdown voltage of the same; a ranging circuit, which is connected with the photodetector and configured to calculate distance data according to the current signal; and a power control circuit, which is connected with the photodetector and configured to control the bias voltage applied to the photodetector according to a predefined rule.
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公开(公告)号：US20240219530A1
公开(公告)日：2024-07-04
申请号：US18395702
申请日：2023-12-25
发明人： Jie LUO , Huazhou CHEN , Shen JIANG
IPC分类号： G01S7/4863
CPC分类号： G01S7/4863
摘要： This application pertains to the field of laser detection, and specifically, relates to a laser detector, including multiple optical detection units and a received signal processing module, where the multiple optical detection units are divided into at least a first block and a second block, a first bias voltage is input into each optical detection unit in the first block, a second bias voltage is input into each optical detection unit in the second block, and the first bias voltage is different from the second bias voltage. The received signal processing module is configured to process a received incident optical signal detected by the first block and the second block and provide an output signal.
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5.发明公开公开(公告)号：US20240019554A1
公开(公告)日：2024-01-18
申请号：US18219702
申请日：2023-07-09
发明人： Shen JIANG
IPC分类号： G01S7/484
CPC分类号： G01S7/484
摘要： A control method and device for multichannel laser emission, and a computer readable storage medium are disclosed. The method includes: controlling the emission of secondary emergent lasers of a plurality of channels of a multichannel LiDAR in a time-sharing manner during an operation cycle of the multichannel LiDAR; and emitting a primary emergent laser at a preset reference moment of each channel or encoding and modulating the emission of the primary emergent laser according to the detection result of the secondary emergent lasers of the plurality of channels.
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6.发明公开公开(公告)号：US20230333248A1
公开(公告)日：2023-10-19
申请号：US18207648
申请日：2023-06-08
发明人： Letian LIU , Shen JIANG , Chunxin QIU
CPC分类号： G01S17/08 , G01S7/4814 , G01S7/4816
摘要： The present application discloses an optical signal processing circuit for a Lidar. The optical signal processing circuit includes an optical processing circuit, a gain control circuit connected to the optical processing circuit, and a controller connected to the gain control circuit. The optical processing circuit includes an optical sensor and an amplification circuit. The optical sensor is configured to convert an optical signal to a photocurrent signal, and the amplification circuit is configured to convert and amplify the photocurrent signal to a voltage signal. The controller adjusts 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：US20220334221A1
公开(公告)日：2022-10-20
申请号：US17852481
申请日：2022-06-29
发明人： Shen JIANG
摘要： The present disclosure relates to a LiDAR. An embodiment of the present invention realizes a control function, a processing function, an emitting function, a receiving function, and an interface function of the LiDAR via each independent board to prevent components from causing a heat accumulation effect. In addition, according to the embodiments of the present disclosure, the digital plate for digital signal processing and the analog plate for analog signal processing are separately arranged to reduce electromagnetic interference between analog signals and digital signals, thereby further reducing the internal interference of the LiDAR.
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8.发明申请公开(公告)号：US20210270965A1
公开(公告)日：2021-09-02
申请号：US16758848
申请日：2019-11-18
发明人： Letian LIU , Shen JIANG , Chunxin QIU
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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9.发明公开公开(公告)号：US20230161015A1
公开(公告)日：2023-05-25
申请号：US18090398
申请日：2022-12-28
发明人： Shen JIANG , Bin TAN
CPC分类号： G01S7/4876 , G01S17/10
摘要： A method and apparatus for improving laser beam ranging capability of a LiDAR system and a storage medium are provided. The method includes: acquiring a first current signal output by a receiving sensor and a second current signal output by a reference sensor; determining a cancellation residue based on the first current signal and the second current signal; determining whether glare noise exists in echo lights based on the cancellation residue; and adjusting a bias voltage at a receiving end of the LiDAR system in a case that the glare noise exists in the echo lights.
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公开(公告)号：US20220206116A1
公开(公告)日：2022-06-30
申请号：US17572520
申请日：2022-01-10
发明人： Yongbo WANG , Shen JIANG , Yajun DU
IPC分类号： G01S7/484 , G01S7/481 , G01S17/931 , H05B47/115
摘要： A method, a device, and an apparatus for controlling laser emission are provided. A secondary emergent laser is emitted at a first time of a detection period. A primary emergent laser emitted at a second time of the detection period is adjusted according to a first detection echo corresponding to the secondary emergent laser.
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