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    Active 3D monitoring system for traffic detection
    31.
    发明授权
    Active 3D monitoring system for traffic detection 有权
    主动3D监控系统，用于流量检测

    公开(公告)号：US08842182B2

    公开(公告)日：2014-09-23

    申请号：US13512407

    申请日：2010-12-22

    申请人： Yvan Mimeault ,  Louis Perreault ,  Martin Dubois

    发明人： Yvan Mimeault ,  Louis Perreault ,  Martin Dubois

    IPC分类号： H04N7/18 ,  G01S17/02 ,  G01S17/89 ,  G08G1/04

    CPC分类号： G08G1/04 ,  G01S17/023 ,  G01S17/026 ,  G01S17/89

    摘要： The traffic detection system includes an optical unit having an emitter module emitting pulses; a receiver module having a field of view including a plurality of adjacent detection channels receiving pulses reflected by an object and acquiring and converting the received pulses into a corresponding plurality of a digital signal waveforms; an image sensing module providing an image. The method comprises providing a status overlay image including the image and a visual indication on the image of an outline of the plurality of adjacent detection channels; positioning the field of view to cover the detection zone using the status overlay image; obtaining the plurality of digital signal waveforms; detecting a signal echo caused by an object in one of the digital signal waveforms at a position within the field of view; determining a location for the object using the position; storing the location for the object.

    摘要翻译： 交通检测系统包括具有发射脉冲的发射器模块的光学单元; 具有包括多个相邻检测通道的接收器模块，其接收由对象反射的脉冲，并且将所接收的脉冲获取并转换成相应的多个数字信号波形; 提供图像的图像感测模块。 该方法包括提供包括图像的状态重叠图像和在多个相邻检测通道的轮廓图像上的视觉指示; 使用状态叠加图像定位视野以覆盖检测区域; 获得多个数字信号波形; 在所述视场内的位置处检测由所述数字信号波形之一中的对象引起的信号回波; 使用位置确定对象的位置; 存储对象的位置。

    Digital signal processing in optical systems used for ranging applications
    32.
    发明授权
    Digital signal processing in optical systems used for ranging applications 有权
    用于测距应用的光学系统中的数字信号处理

    公开(公告)号：US07917320B2

    公开(公告)日：2011-03-29

    申请号：US12604846

    申请日：2009-10-23

    申请人： Marc Levesque ,  François Babin ,  Daniel Cantin

    发明人： Marc Levesque ,  François Babin ,  Daniel Cantin

    IPC分类号： G01R29/26 ,  G06F19/00

    CPC分类号： G01S7/484 ,  G01S7/4868 ,  G01S7/487 ,  G01S17/10

    摘要： Methods and apparatuses for reducing the response time along with increasing the probability of ranging of optical rangefinders that digitize the signal waveforms obtained from the pulse echoes returned from various types of objects to be ranged, the pulse echoes being too weak to allow successful ranging from a single waveform or the objects being possibly in motion during the capture of the pulse echoes. In a first embodiment of the invention, the response time at close range of a digital optical rangefinder is reduced by using a signal averaging process wherein the number of data to be averaged varies with the distance according to a predetermined function. In a second embodiment of the invention, the probability of ranging objects in motion along the line of sight of a digital optical rangefinder is increased and the object velocity measured by performing a range shift of each acquired signal waveform prior to averaging. In a third embodiment of the invention, the signal waveforms acquired in the line of sight of a digital optical rangefinder are scanned over a predetermined zone and range shifted and averaged to allow for early detection and ranging of objects that enter in the zone.

    摘要翻译： 减少响应时间的方法和装置以及随着光学测距仪测距的可能性的增加，数字化从从不同类型的物体返回的脉冲回波获得的信号波形，脉冲回波太弱，不能从 在捕获脉冲回波期间，单个波形或物体可能运动。 在本发明的第一实施例中，通过使用信号平均处理来减少数字光学测距仪近距离处的响应时间，其中要平均的数据数量根据预定功能的距离而变化。 在本发明的第二实施例中，沿着数字光学测距仪的视线测量对象的运动概率增加，并且通过在平均之前执行每个获取的信号波形的范围偏移来测量对象速度。 在本发明的第三实施例中，在数字光学测距仪的视线中获取的信号波形在预定的区域上被扫描，并且移动和平均的范围，以允许早期检测和进入该区域的物体的测距。

    Beam-steering device particularly for lidar systems
    34.
    发明授权
    Beam-steering device particularly for lidar systems 有权

    公开(公告)号：US12066576B2

    公开(公告)日：2024-08-20

    申请号：US18079620

    申请日：2022-12-12

    申请人： LeddarTech Inc.

    发明人： Pierre Olivier

    IPC分类号： G01S7/481 ,  G01S7/499 ,  G02F1/29

    CPC分类号： G01S7/4817 ,  G01S7/499 ,  G02F1/291

    摘要： A beam-steering engine, comprising an optical element switchable between a first operational mode and a second operational mode, in the first operational mode of the optical element the beam-steering engine is configured to output an input light beam incident on the beam-steering engine along a first propagation direction and in the second operational mode of the optical element the beam-steering engine is configured to output the input light beam incident on the beam-steering engine along a second propagation direction. A transition of the optical element between the first and second operational modes is characterized by a transition time period that varies with a temperature of the optical element. The beam-steering engine further includes a device to control a temperature of the solid-state optical element to maintain the transition time period below a certain limit.

    Distance detection method and system
    35.
    再颁专利
    Distance detection method and system 有权

    公开(公告)号：USRE49950E1

    公开(公告)日：2024-04-30

    申请号：US17984975

    申请日：2022-11-10

    申请人： LeddarTech Inc.

    发明人： Yvan Mimeault

    IPC分类号： G01C3/08 ,  G01S7/10 ,  G01S7/4861 ,  G01S7/4865 ,  G01S7/487

    CPC分类号： G01S7/4865 ,  G01S7/10 ,  G01S7/4861 ,  G01S7/487

    摘要： There is provided a system and method for detecting a distance to an object. The method comprises providing a lighting system having at least one pulse width modulated visible-light source for illumination of a field of view; emitting an illumination signal for illuminating the field of view for a duration of time y using the visible-light source at a time t; integrating a reflection energy for a first time period from a time t−x to a time t+x; determining a first integration value for the first time period; integrating the reflection energy for a second time period from a time t+y−x to a time t+y+x; determining a second integration value for the second time period; calculating a difference value between the first integration value and the second integration value; determining a propagation delay value proportional to the difference value; determining the distance to the object from the propagation delay value.

    Beam-Steering Device Particularly for Lidar Systems
    38.
    发明公开
    Beam-Steering Device Particularly for Lidar Systems 审中-公开

    公开(公告)号：US20230243931A1

    公开(公告)日：2023-08-03

    申请号：US18079620

    申请日：2022-12-12

    申请人： LeddarTech Inc.

    发明人： Pierre Olivier

    IPC分类号： G01S7/481 ,  G02F1/29 ,  G01S7/499

    CPC分类号： G01S7/4817 ,  G02F1/291 ,  G01S7/499

    摘要： A beam-steering engine, comprising an optical element switchable between a first operational mode and a second operational mode, in the first operational mode of the optical element the beam-steering engine is configured to output an input light beam incident on the beam-steering engine along a first propagation direction and in the second operational mode of the optical element the beam-steering engine is configured to output the input light beam incident on the beam-steering engine along a second propagation direction. A transition of the optical element between the first and second operational modes is characterized by a transition time period that varies with a temperature of the optical element. The beam-steering engine further includes a device to control a temperature of the solid-state optical element to maintain the transition time period below a certain limit.

    Distance detection method and system
    39.
    再颁专利
    Distance detection method and system 有权

    公开(公告)号：USRE49342E1

    公开(公告)日：2022-12-20

    申请号：US16011820

    申请日：2018-06-19

    申请人： LeddarTech Inc.

    发明人： Yvan Mimeault

    IPC分类号： G01C3/08 ,  G01S7/487 ,  G01S7/4861 ,  G01S7/4865 ,  G01S17/10

    摘要： There is provided a system and method for detecting a distance to an object. The method comprises providing a lighting system having at least one pulse width modulated visible-light source for illumination of a field of view; emitting an illumination signal for illuminating the field of view for a duration of time y using the visible-light source at a time t; integrating a reflection energy for a first time period from a time t−x to a time t+x; determining a first integration value for the first time period; integrating the reflection energy for a second time period from a time t+y−x to a time t+y+x; determining a second integration value for the second time period; calculating a difference value between the first integration value and the second integration value; determining a propagation delay value proportional to the difference value; determining the distance to the object from the propagation delay value.