-
公开(公告)号：US20240337733A1
公开(公告)日：2024-10-10
申请号：US18412172
申请日：2024-01-12
Applicant: Hesai Technology Co., Ltd.
Inventor： Chenluan WANG , Xuezhou ZHU , Jin YANG , Xugang LIU , Shaoqing XIANG
IPC: G01S7/484 , G01S7/481 , G01S7/4865 , G01S7/487 , G01S17/10
CPC classification number: G01S7/484 , G01S7/4815 , G01S7/4865 , G01S7/487 , G01S17/10
Abstract: A detection method for a LiDAR includes: obtaining detection data of K detection sweeps in a detection cycle, and changing a light-emitting scheme of a laser during the (K+1)th to Nth detection sweeps in the detection cycle based on the detection data of the K detection sweeps. The detection data includes time information and intensity information, and the detection cycle includes N detection sweeps, where N and K are integers, and 1≤K
-
公开(公告)号：US20240255617A1
公开(公告)日：2024-08-01
申请号：US18581059
申请日：2024-02-19
Applicant: Hesai Technology Co., Ltd.
Inventor： Kai SUN , Xuezhou ZHU , Jie CHEN , Shaoqing XIANG , Jin YANG
CPC classification number: G01S7/4815 , G01S7/4817 , G01S7/484 , G01S17/10
Abstract: A Lidar for detecting distance information comprises an emitting module emitting laser beams for detecting distance information and including a first array of laser emitters that are arranged along a vertical direction and separated into a plurality of banks each having a single semiconductor substrate; a scanner configured to cause the first array of laser emitters to scan along a horizontal direction; and a detecting module that detects returned laser beams generated by the first array of laser emitters and determines distance information based on returned laser beams, wherein the emitting module is configured to activating a plurality of laser emitters for scanning an external environment in parallel, and the plurality of laser emitters are no more than one half of the first array of laser emitters.
-
公开(公告)号：US20240192336A1
公开(公告)日：2024-06-13
申请号：US18545097
申请日：2023-12-19
Applicant: HESAI TECHNOLOGY CO., LTD.
Inventor： Zhengtao CHEN , Xuezhou ZHU , Shaoqing XIANG
IPC: G01S7/4863
CPC classification number: G01S7/4863
Abstract: A light detector comprising: an array of photodetectors for receiving light signals and generating electrical signals corresponding to the light signals, an array of switches comprising a plurality of first switches, each of the plurality of first switches couples to a respective one of the array of photodetectors, and each of the plurality of first switches is configured to control an operating state of the respective one of the array of photodetectors for a signal output terminal of the respective one of the array of photodetectors to output the electrical signals, and a selector configured to select the respective one of the array of photodetectors in the operating state to output the electrical signals.
-
公开(公告)号：US20240061116A1
公开(公告)日：2024-02-22
申请号：US18496394
申请日：2023-10-27
Applicant: HESAI TECHNOLOGY CO., LTD.
Inventor： Xuezhou ZHU , Jin YANG , Zhaoming ZENG , Jun TAO , Shaoqing XIANG , Kai SUN
CPC classification number: G01S17/10 , G01S7/4815 , G01S7/4816 , G01S7/487 , G01S7/484
Abstract: Methods, devices, and systems for light detection are provided. In one aspect, a light detection device includes a light emitter array, a light detector array, and a controller. The light emitter array includes a plurality of light emitters configured to output transmission signals. The light detector array includes a plurality of light detectors configured to detect echo signals of the transmission signals reflected off an obstacle. The light emitter array and the light detector array are configured to form a plurality of detection channels, and each detection channel includes at least one light emitter and at least one light detector. The controller is configured to, during a signal transmission process, select multiple light emitters to emit light in parallel. Fields of view (FOVs) of the multiple light emitters that emit light in parallel are separate from each other within a detection distance.
-
公开(公告)号：US20240061114A1
公开(公告)日：2024-02-22
申请号：US18385065
申请日：2023-10-30
Applicant: Hesai Technology Co., Ltd.
Inventor： Xuezhou ZHU , Shaoqing XIANG
IPC: G01S17/08 , G01S7/481 , G01S7/484 , G01S7/4863 , G01S7/487
CPC classification number: G01S17/08 , G01S7/4815 , G01S7/4816 , G01S7/484 , G01S7/4863 , G01S7/487
Abstract: This disclosure provides a light detection device and a driving vehicle. The light detection device includes: a window; a light transmission end configured to output an transmission signal; a light detecting end configured to detect the echo signal of the transmission signal; and optical signal redirection component configured to deflect the transmission signal through movement, so that the transmission signal emerges from the window of the light detection device to enable scanning of the field of view in the second direction and redirect the echo signal, whereby the echo signal is transmitted to the light detecting end. The optical path for transmission signal and the optical path for echo signal overlap at least between the window and the optical signal redirection component. In the embodiment of this disclosure, by arranging the emission end and receiving end to the left and right relative to each other instead of stacking them on top of each other, the height of the device can be maintained or even decreased without affecting the detection performance, and the short-range blind zone can be reduced.
-
Patent Agency Ranking
公开(公告)号：US20230061653A1
公开(公告)日：2023-03-02
申请号：US17963362
申请日：2022-10-11
Applicant: Hesai Technology Co., Ltd.
Inventor： Xuezhou ZHU , Chenluan WANG , Wenyi ZHU , Shaoqing XIANG
Abstract: A detection circuit for adjusting a width of output pulses is provided, including: a single-photon avalanche diode configured to generate a photocurrent according to an incident photon; and a comparator, having a first input terminal to receive a signal indicating an adjustable threshold, and a second input terminal coupled to the single-photon avalanche diode to receive an electrical signal representing the photocurrent. The comparator outputs a waveform based on a comparison result between the electrical signal and the signal indicating the adjustable threshold. When a plurality of photons are received by the single-photon avalanche diode within a short time period, a pulse width of an output signal of the circuit is increased. A number of photons can be obtained according to the pulse width of the signal, and a dynamic range of the single-photon avalanche diode device is improved. A pulse width of a single-photon signal can be adjusted.
-
公开(公告)号：US20230152432A1
公开(公告)日：2023-05-18
申请号：US18147718
申请日：2022-12-29
Applicant: HESAI TECHNOLOGY CO., LTD.
Inventor： Chenluan WANG , Xuezhou ZHU , Wenyi ZHU , Tingyu YAO , Shaoqing XIANG
CPC classification number: G01S7/497 , G01S7/4815 , G01S7/4816
Abstract: A lidar and a control method of the lidar, and an addressing circuit are provided. The control method of the lidar includes: acquiring an address of a starting group of detection units is paired with a group of activated emitters in the lidar, and generating a corresponding control signal for detection, where the address of the starting group of the detection units is determined based on a result of a calibration process performing a decoding process and a logic operation process on the control signal for detection, determining the address of the corresponding starting group of the detection units that has been processed by the calibration process, and determining addresses of other groups of detection units to be synchronously activated at the same time with the starting group of the detection units, determining a channel selecting address, and generating a selecting and controlling signal for corresponding channels.
-
公开(公告)号：US20230003850A1
公开(公告)日：2023-01-05
申请号：US17939604
申请日：2022-09-07
Applicant: Hesai Technology Co., Ltd.
Inventor： Jun TAO , Xuezhou ZHU , Shaoqing XIANG
IPC: G01S7/4863 , G01S17/10 , G01S7/4865 , G01S7/481 , G01S7/48
Abstract: A detection device of a light detection and ranging (lidar) device, a detection method, and a lidar device are provided. The detection device predicts the location of light spots of a reflected echo on a detector array, and reads electric signals of a subset of the photodetectors corresponding to the light spots. According to the detection method, the location on a detector array for light spots of a reflected echo is predicted according to a time of flight of a detection beam, a subset of the photodetectors corresponding to the light spots are activated, and their electric signals are read. All received light is detected, without increasing the receiving field of view, ambient light interference is suppressed, and the problem of shift of the light spots on a focal plane caused by optical path distortion is effectively solved.
-
公开(公告)号：US20250028029A1
公开(公告)日：2025-01-23
申请号：US18906337
申请日：2024-10-04
Applicant: HESAI TECHNOLOGY CO., LTD.
Inventor： Hao LIU , Xuezhou ZHU , Shaoqing XIANG
Abstract: This disclosure provides a solid-state LiDAR and a method for controlling a solid-state LiDAR. The solid-state LiDAR includes: an emitter module and a receiver module, where the emitter module can emit a detection signal, and includes multiple light-emitter units; and the receiver module can receive an echo signal of the detection signal reflected by an obstacle, and includes multiple groups of detectors; and where an emitting sub-field of view corresponding to each light-emitter unit is coincident with a receiving sub-field of view corresponding to at least one group of detectors, and an angular range of the emitting sub-field of view corresponding to each light-emitter unit is greater than an angular range of the receiving sub-field of view corresponding to a coincident group of detectors.
-
公开(公告)号：US20240310495A1
公开(公告)日：2024-09-19
申请号：US18675797
申请日：2024-05-28
Applicant: Hesai Technology Co., Ltd.
Inventor： Xuezhou ZHU , Shaoqing XIANG
IPC: G01S7/4865 , G01S7/487 , G01S17/10
CPC classification number: G01S7/4865 , G01S7/4873 , G01S17/10
Abstract: A Lidar system is provided. The Lidar system comprise: a light source configured to emit a multi-pulse sequence to measure a distance between the Lidar system and a location in a three-dimensional environment, and the multi-pulse sequence comprises multiple pulses having a temporal profile; a photosensitive detector configured to detect light pulses from the three-dimensional environment; and one or more processors configured to: determine a coding scheme comprising the temporal profile, wherein the coding scheme is determined dynamically based on one or more real-time conditions including an environment condition, a condition of the Lidar system or a signal environment condition; and calculate the distance based on a time of flight of a sequence of detected light pulses, wherein the time of flight is determined by determining a match between the sequence of detected light pulses and the temporal profile.
-
-
-
-
-
-
-
-
-
Search Results
12
records
(took 0.016 seconds)
