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1
CN212808625U
光电传感采集模组以及测距装置
Grant
Publication/Patent Number: CN212808625U Publication Date: 2021-03-26 Application Number: 202020620791.9 Filing Date: 2020-04-22 Inventor: 张超   臧凯   马志洁   Assignee: 深圳市灵明光子科技有限公司   IPC: G01S17/26 Abstract: 本申请实施例公开了一种光电传感采集模组以及包含光电传感采集模组的测距装置,光电传感采集模组包括光电接收模块以及信号累加模块。光电接收模块用于将接收到的光信号转换为数字形式的脉冲信号。信号累加模块电性连接于光电接收模块,用于将接收到的脉冲信号进行累加后,依据采样信号对累加信号进行采样获得数字累加信号,得到目标物体的第一位置范围,同时可以在第一位置范围基础上利用时间数字转换模块采集到的时间数字信号,得到目标物体的距离信息。
2
CN110187351B
一种利用高频脉幅调制波的数字激光测距方法
Grant
Publication/Patent Number: CN110187351B Publication Date: 2021-06-22 Application Number: 201910429502.9 Filing Date: 2019-05-22 Inventor: 黄民双   Assignee: 北京石油化工学院   IPC: G01S17/26 Abstract: 本发明公开了一种利用高频脉幅调制波的数字激光测距方法,首先采用高频周期信号作载波,调制低频窄脉冲产生调强激光脉冲,作为高频脉幅调制波,并驱动激光发射器发射激光;所发射的激光经过被测目标漫反射后返回到光电探测器并转换为光电流,再经接收通道处理后发送至模数转换器ADC;通过采样返回信号内的一个或多个高频周期,经过相关处理后重构出完整周期的高频信号,并以此获得高精度距离测量值。上述方法可以减小由噪声和介质散射引起的脉冲受畸变影响,并提高信噪比,从而提高测程。
3
US2021026017A1
APPARATUS FOR ASCERTAINING A DISTANCE TO AN OBJECT
Publication/Patent Number: US2021026017A1 Publication Date: 2021-01-28 Application Number: 17/010,723 Filing Date: 2020-09-02 Inventor: Davydenko, Vladimir   HÖller, Frank   Zott, Andy   Assignee: Carl Zeiss AG   IPC: G01S17/89 Abstract: An apparatus for ascertaining a distance to an object has a light source that emits an optical signal having a time-varying frequency. An evaluation device ascertains a distance to the object based on a measurement signal that originated from the optical signal and was reflected at the object and, and on a reference signal that was not reflected at the object. A dispersive element produces a frequency-selective angle distribution of the measurement signal that has a plurality of partial signals which are steered to the object at mutually different angles.
4
CN112684465A
一种基于相位调制编码脉冲的探测系统及探测方法
Substantial Examination
Publication/Patent Number: CN112684465A Publication Date: 2021-04-20 Application Number: 202011606049.3 Filing Date: 2020-12-28 Inventor: 任建峰   华一敏   Assignee: 昂纳信息技术(深圳)有限公司   IPC: G01S17/26 Abstract: 本发明涉及激光探测领域,具体涉及一种基于相位调制编码脉冲的探测系统及探测方法;所述探测系统包括用于发射光信号的种子源、分束器、用于相位调制和编码调制的相位调制器、光接收组件、用于光偏转扫描的扫描器、信号处理组件以及主控单元;本发明通过设计一种基于相位调制编码脉冲的探测系统及探测方法,以较低的激光功率实现了远距离的目标探测;进一步地,通过采用相位编码脉冲序列探测的方式,通过在探测信号中叠加带有编码的相位调制信号,可以实现多次脉冲序列同时飞行测量,有效提高了探测频率,同时,由于各序列的编码不同,在回波信号处理过程中可以进行区分,有效避免了信号混淆,从而有效避免测距模糊。
5
EP3835818A1
IMPROVED LIDAR WITH REDUCED PHOTON NOISE
Publication/Patent Number: EP3835818A1 Publication Date: 2021-06-16 Application Number: 19215819.4 Filing Date: 2019-12-12 Inventor: Hinderling, Jürg   Stutz, Reto   Assignee: Hexagon Technology Center GmbH   IPC: G01S7/484 Abstract: Distance measuring device for geodetic or industrial distance measurement according to the pulse time-of-flight principle, the distance measuring device comprising a light generator (1) configured to emit at least one pulsed light signal to a target (5), wherein the pulsed light signal has a pulse form envelope (10), a receiving circuit (8) having a detector configured for detecting at least part of the light signal returning from the target (5), wherein the receive signal is extracted in such a way as to be comparable to the pulse form envelope (10), and an evaluation unit (9) configured for determining the time of flight of the pulsed light signal on the basis of the receive signal, wherein a start time of the pulsed light signal is determined, particularly based on the time of occurrence of a feature in the emitted pulse form envelope of the emitted pulsed light signal, and a stop time is determined based on the time of occurrence of a feature in the receive signal, particularly the same feature as the feature used for determining the start time, wherein the difference between the stop and start time is used for determining the distance to the target, wherein the distance measuring device is configured in such a way that the at least one pulsed light signal generated by the light generator (1) is comprised of sub-pulses (13) provided with a repetition rate of at least 1GHz, wherein the sub-pulses (13) contained in the pulsed light signal preserve the pulse form envelope (10) of the pulsed light signal.
6
CN110221274B
时间飞行深度相机及多频调制解调的距离测量方法
Grant
Publication/Patent Number: CN110221274B Publication Date: 2021-04-30 Application Number: 201910386369.3 Filing Date: 2019-05-09 Inventor: 胡小龙   朱亮   Assignee: 奥比中光科技集团股份有限公司   IPC: G01S7/4865 Abstract: 本发明提供一种时间飞行深度相机及多频调制解调的距离测量方法,时间飞行深度相机包括发射模组,包括光源,用于向待测物发射脉冲光束;采集模组,包括由至少一个像素组成的图像传感器,每个像素包括至少3个抽头,抽头用于采集由待测物反射回的反射脉冲光束产生的电荷信号或背景光的电荷信号;处理电路,控制发射模组在相邻的帧周期内发射不同频率的脉冲光束,并分别在帧周期内接收至少3个抽头的电荷信号的数据;对电荷信号的数据进行判断以确定电荷信号的数据中是否包含反射脉冲光束的电荷信号;根据判断结果计算脉冲光束的飞行时间和/或待测物的距离。在具有较远测量距离的情况下仍能保持较低的测量功耗和较高的测量精度。
7
CN105974429B
光波测距仪
Publication/Patent Number: CN105974429B Publication Date: 2021-01-05 Application Number: 201610117019.3 Filing Date: 2016-03-02 Inventor: 大友文夫   熊谷薰   Assignee: 株式会社拓普康   IPC: G01S17/26 Abstract: 本发明涉及光波测距仪。具备:发光元件;信号发生器;断续脉冲发生器,产生使多个邻近频率分别断续而脉冲化为规定宽度的调制信号;射出光学系统,按照每个邻近频率依次切换射出利用调制信号脉冲化为规定宽度的断续调制测距光;光接收部,对来自测定对象物的反射测距光进行光接收,产生规定脉冲宽度的断续光接收信号;其他的信号发生器,针对邻近频率分别产生具有规定的频率的差的频率信号;频率变换部,通过来自光接收部的断续光接收信号和频率信号的混频而频率变换为差频,与各个差频对应地得到具有规定的脉冲宽度并且与各个差频对应地发生变化的断续变换信号的信号序列;以及运算控制部。
8
CN112415533A
一种基于啁啾脉冲的深度感知方法、装置及传感器
Grant
Publication/Patent Number: CN112415533A Publication Date: 2021-02-26 Application Number: 202110081638.2 Filing Date: 2021-01-21 Inventor: 徐永奎   齐伟   陈国卯   Assignee: 杭州蓝芯科技有限公司   IPC: G01S17/26 Abstract: 本发明公开了一种基于啁啾脉冲的深度感知方法、装置及传感器,该方法包括:接收通过恒流驱动的激光光源发射的信号光;对所述信号光进行啁啾调制和时间调制,调制后投射向目标物体;接收由所述目标物体反射的反射信号光,产生光信号,对所述光信号进行时域和频域预处理后解析得到脉冲信号;获取所述脉冲信号,根据所述脉冲信号的数量、频率以及方位信息,计算得到深度信息。本发明通过在传统PTOF方案的基础上引入啁啾调制和解调以获得更高时间分辨率的飞行时间。同时在时域和频域两个维度对信号光进行滤波以减少环境光干扰,提高了系统测距的准确性和稳定性。
9
US2021149049A1
SYSTEMS AND METHODS FOR LASER DISTANCE MEASUREMENT
Publication/Patent Number: US2021149049A1 Publication Date: 2021-05-20 Application Number: 16/732,383 Filing Date: 2020-01-02 Inventor: Luo, Long   Chou, Zhi   Assignee: SHENZHEN MILESEEY TECHNOLOGY CO., LTD.   IPC: G01S17/36 Abstract: The present disclosure relates to a method and a system for laser distance measurement. The method includes: obtaining, from a control circuit, a synchronization signal; generating, by at least one signal generator, a first periodic signal, a second periodic signal, and a third periodic signal based on the synchronization signal; emitting, by a laser emitting device, a laser beam toward a target, the laser beam being generated under a modulation of the first periodic signal; generating, by an optical detector, a measurement signal in response to a signal mixing of the second periodic signal and a reflected laser beam from the target; and determining a distance to the target based on the measurement signal and the third periodic signal.
10
CN112415533B
一种基于啁啾脉冲的深度感知方法、装置及传感器
Grant
Publication/Patent Number: CN112415533B Publication Date: 2021-04-16 Application Number: 202110081638.2 Filing Date: 2021-01-21 Inventor: 徐永奎   齐伟   陈国卯   Assignee: 杭州蓝芯科技有限公司   IPC: G01S17/26 Abstract: 本发明公开了一种基于啁啾脉冲的深度感知方法、装置及传感器,该方法包括:接收通过恒流驱动的激光光源发射的信号光;对所述信号光进行啁啾调制和时间调制,调制后投射向目标物体;接收由所述目标物体反射的反射信号光,产生光信号,对所述光信号进行时域和频域预处理后解析得到脉冲信号;获取所述脉冲信号,根据所述脉冲信号的数量、频率以及方位信息,计算得到深度信息。本发明通过在传统PTOF方案的基础上引入啁啾调制和解调以获得更高时间分辨率的飞行时间。同时在时域和频域两个维度对信号光进行滤波以减少环境光干扰,提高了系统测距的准确性和稳定性。
11
CN110221273B
时间飞行深度相机及单频调制解调的距离测量方法
Grant
Publication/Patent Number: CN110221273B Publication Date: 2021-07-06 Application Number: 201910385779.6 Filing Date: 2019-05-09 Inventor: 胡小龙   朱亮   Assignee: 奥比中光科技集团股份有限公司   IPC: G01S7/4865 Abstract: 本发明提供一种时间飞行深度相机及单频调制解调的距离测量方法,时间飞行深度相机包括发射模组,包括光源,用于向待测物发射脉冲光束;采集模组,包括由至少一个像素组成的图像传感器,每个像素包括至少3个抽头,抽头用于采集由待测物反射回的反射脉冲光束所产生的电荷信号或背景光的电荷信号;处理电路,用于接收至少3个抽头的电荷信号的数据;对电荷信号的数据进行判断以确定电荷信号的数据中是否包含反射脉冲光束的电荷信号;根据判断结果计算脉冲光束的飞行时间和/或待测物的距离。只需要一次曝光输出三个抽头的信号量即可获得一帧深度信息,因而显著降低了整体的测量功耗并提高了测量帧频。
12
CN110927735B
基于多通道全波形激光雷达数据的多目标距离测量方法
Grant
Publication/Patent Number: CN110927735B Publication Date: 2021-07-20 Application Number: 201911149992.3 Filing Date: 2019-11-21 Inventor: 宋沙磊   王滨辉   龚威   曹雄   陈振威   何东   Assignee: 中国科学院武汉物理与数学研究所   IPC: G01S17/26 Abstract: 本发明公开了基于多通道全波形激光雷达数据的多目标距离测量方法,建立激光发射脉冲的拟合模型和第j个通道的后向散射回波的拟合模型,对模型参数进行初始化;将模型参数输入到激光发射脉冲的拟合模型和第j个通道的后向散射回波的拟合模型,基于非线性最小二乘曲线拟合的列文伯格‑马夸尔特算法获得模型参数的最优解;计算获得第i个目标与测距零点之间的相对距离;计算获得标定常数;根据标定常数获得第i个目标的高精度距离信息。本方法采用建立多通道波形拟合模型,与单波长波形拟合模型相比,模型初始化参考信息更多,初始化结果更接近真实值,有利于获取更精确的测距信息。
13
US10884109B2
Analytical-adaptive multifrequency error minimization unwrapping
Publication/Patent Number: US10884109B2 Publication Date: 2021-01-05 Application Number: 15/941,885 Filing Date: 2018-03-30 Inventor: Egea, Sergio Ortiz   Assignee: Microsoft Technology Licensing, LLC   IPC: G01S7/4865 Abstract: Features of the present disclosure implement an analytical formalism to calculate a time of flight (ToF) for a signal in order to identify the distance between the ToF imaging system and a target object. The features of the present disclosure allow a flexible, fast, and accurate solution for phase unwrapping in ToF imaging system. Such techniques minimize the memory usage, accounts for the factors that generally contribute to differences in the performance of the selected modulation frequencies, and mitigates the unwrapping errors that occur in low signal to noise areas.
14
CN113015891A
显示器下部的传感器
Substantial Examination
Publication/Patent Number: CN113015891A Publication Date: 2021-06-22 Application Number: 202080002035.2 Filing Date: 2020-01-23 Inventor: 闵丙日   Assignee: 杭州芯格微电子有限公司   IPC: G01J1/42 Abstract: 显示器(10)下部的传感器(100),其包括:光传感器(200),包括照射用于感应位于所述显示器(10)外部的物体的经调制的感应光的光照射部(210)以及检测所述经调制的感应光被所述物体反射回来的外部反射光并生成像素电流的受光部(220);传感器偏光层(110),配置在所述光传感器(200)的上部,且具有以第一角度倾斜的偏光轴;以及传感器延迟层(120),配置在所述传感器偏光层(110)的上部,且具有相对于所述传感器偏光层(110)的偏光轴以所述第一角度倾斜的慢轴。
15
CN111273310B
旋转紧凑型光测距系统
Grant
Publication/Patent Number: CN111273310B Publication Date: 2021-03-12 Application Number: 202010108049.4 Filing Date: 2018-12-06 Inventor: A·帕卡拉   M·弗里赫特   M·舒   E·扬   Assignee: 奥斯特公司   IPC: G01S17/894 Abstract: 一种光测距系统包含:轴杆;第一电路板组合件,其包含定子组合件,所述定子组合件包括围绕所述轴杆布置在所述第一电路板组合件的表面上的多个定子元件;第二电路板组合件,其旋转联接到所述轴杆,其中所述第二电路板组合件包含转子组合件,所述转子组合件包括围绕所述轴杆布置在所述第二电路板组合件的表面上的多个转子元件,使得所述多个转子元件与所述多个定子元件对准且隔开;定子驱动器电路,其安置于所述第二或所述第一电路板组合件的任一个上且被配置成将驱动信号提供到所述多个定子元件,借此在所述多个转子元件上赋予电磁力来驱动所述第二电路板组合件围绕所述轴杆的旋转;以及光测距装置,其以机械方式联接到所述第二电路板组合件使得所述光测距装置随所述第二电路板组合件旋转。
16
US2021072382A1
Lidar Time-of-Flight and Intensity Detection Signal-Path Based on Phase-Coded Multi-Pulse Transmission and Single-Bit Oversampled Matched Filter Detection
Publication/Patent Number: US2021072382A1 Publication Date: 2021-03-11 Application Number: 16/965,405 Filing Date: 2019-01-29 Inventor: Kashmiri, Sayyed Mahdi   Assignee: Robert Bosch GmbH   IPC: G01S17/26 Abstract: A light detection and ranging (Lidar) system includes a light transmission component driven by a phase-keyed burst pattern generator operable to apply a phase-coded key for activating the light source in a series of on/off pulses for the transmitted TX light. The on/off sequence is chosen such that the pattern's auto-correlation function has a maximized peak to side lobe ratio. The on/off pulses of the received RX light reflected from the object or scene is converted to a bitstream that is cross-correlated with the phase-coded key. A peak detector finds the peak of the cross-correlation function and generate a time-of-flight signal indicative of the time between the transmission of the TX light and the peak of the cross-correlation function.
17
EP3118651B1
TIME-OF-FLIGHT MEASURING DEVICE AND TIME-OF-FLIGHT MEASURING METHOD WITH AMBIGUITY SOLUTION IN REAL TIME
Publication/Patent Number: EP3118651B1 Publication Date: 2021-04-21 Application Number: 15177315.7 Filing Date: 2015-07-17 Inventor: Hinderling, Jürg   Stutz, Reto   Singer, Julien   Wohlgenannt, Rainer   Bestler, Simon   Assignee: Hexagon Technology Center GmbH   IPC: G01S17/10
18
US2021173083A1
LiDAR APPARATUS USING INTERRUPTED CONTINUOUS WAVE LIGHT
Publication/Patent Number: US2021173083A1 Publication Date: 2021-06-10 Application Number: 16/886,180 Filing Date: 2020-05-28 Inventor: Shin, Dongjae   Byun, Hyunil   Shin, Changgyun   Jang, Bongyong   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: G01S17/42 Abstract: A light detection and ranging (LiDAR) apparatus capable of extracting speed information and distance information of objects in front thereof is provided. The LiDAR apparatus includes: a continuous wave light source configured to generate continuous wave light; a beam steering device configured to emit the continuous wave light to an object for a first time and stop emitting the continuous wave light to the object for a second time; a receiver configured to receive the continuous wave light that is reflected from the object to form a reception signal; and a signal processor configured to obtain distance information and speed information about the object based on the reception signal.
19
US2021174474A1
MACHINE-LEARNED DEPTH DEALIASING
Publication/Patent Number: US2021174474A1 Publication Date: 2021-06-10 Application Number: 17/168,373 Filing Date: 2021-02-05 Inventor: Bleyer, Michael   Edmonds, Christopher Douglas   Price, Raymond Kirk   Assignee: Microsoft Technology Licensing, LLC   IPC: G06T5/00 Abstract: Techniques for de-aliasing depth ambiguities included within infrared phase depth images are described herein. An illuminator emits reference light towards a target object. Some of this light is reflected back and detected. A phase image is generated based on phase differences between the reference light and the reflected light. The phase differences represent changes in depth within overlapping sinusoidal periods of the reference and reflected light. The phase image also includes ambiguities because multiple different depths within the phase image share the same phase difference value, even though these depths actually correspond to different real-world depths. The phase image is fed as input to a machine learning (“ML”) component, which is configured to de-alias the ambiguities by determining, for each pixel in the phase image, a corresponding de-aliasing interval. A depth map is generated based on the phase image and any de-aliasing intervals generated by the ML component.
20
US2021055392A1
LiDAR DEVICE AND OPERATING METHOD THEREOF
Publication/Patent Number: US2021055392A1 Publication Date: 2021-02-25 Application Number: 16/782,779 Filing Date: 2020-02-05 Inventor: Lee, Jisan   Kim, Jungwoo   Assignee: SAMSUNG ELECTRONICS CO., LTD.   IPC: G01S7/4865 Abstract: A light detection and ranging (LiDAR) device may include: an optical phased array configured to modulate a phase of light incident on the optical phased array and emit the light; a first photodetector configured to detect, as a reference light, the light emitted from the optical phased array in a first direction toward the first photodetector, and generate a reference signal based on the reference light; a second photodetector configured to detect, as a target light including information about an object, the light emitted from the optical phased array in a second direction toward the object, and generate a target signal based on the target light; and a processor configured to determine a distance between the LiDAR device and the object based on a cross-correlation between the reference signal and the target signal.
Total 5 pages