FR3090124B1 - Capteur de temps de vol et système de surveillance comportant un tel capteur - Google Patents

Capteur de temps de vol et système de surveillance comportant un tel capteur Download PDF

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Publication number
FR3090124B1
FR3090124B1 FR1872981A FR1872981A FR3090124B1 FR 3090124 B1 FR3090124 B1 FR 3090124B1 FR 1872981 A FR1872981 A FR 1872981A FR 1872981 A FR1872981 A FR 1872981A FR 3090124 B1 FR3090124 B1 FR 3090124B1
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FR
France
Prior art keywords
source
time
sensor
light power
source beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
FR1872981A
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English (en)
Other versions
FR3090124A1 (fr
Inventor
Sylvain Beaudoin
Sébastien Trapani
Frederic Autran
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Comfort and Driving Assistance SAS
Original Assignee
Valeo Comfort and Driving Assistance SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Comfort and Driving Assistance SAS filed Critical Valeo Comfort and Driving Assistance SAS
Priority to FR1872981A priority Critical patent/FR3090124B1/fr
Priority to CN201980082468.0A priority patent/CN113167874A/zh
Priority to PCT/EP2019/082602 priority patent/WO2020120128A1/fr
Priority to EP19809075.5A priority patent/EP3894886A1/fr
Priority to US17/413,766 priority patent/US20220050202A1/en
Publication of FR3090124A1 publication Critical patent/FR3090124A1/fr
Application granted granted Critical
Publication of FR3090124B1 publication Critical patent/FR3090124B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
    • G01S17/36—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated with phase comparison between the received signal and the contemporaneously transmitted signal
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
    • G01S17/894—3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/4802—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • G01S7/4868—Controlling received signal intensity or exposure of sensor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/483—Details of pulse systems
    • G01S7/486—Receivers
    • G01S7/487—Extracting wanted echo signals, e.g. pulse detection
    • G01S7/4873—Extracting wanted echo signals, e.g. pulse detection by deriving and controlling a threshold value
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/50—Context or environment of the image
    • G06V20/59—Context or environment of the image inside of a vehicle, e.g. relating to seat occupancy, driver state or inner lighting conditions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V2201/00—Indexing scheme relating to image or video recognition or understanding
    • G06V2201/12—Acquisition of 3D measurements of objects
    • G06V2201/121—Acquisition of 3D measurements of objects using special illumination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/16—Human faces, e.g. facial parts, sketches or expressions
    • G06V40/161—Detection; Localisation; Normalisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

L’invention concerne un capteur de temps de vol (10) comportant : un dispositif d’illumination (11) comprenant une source de lumière (12) émettant un faisceau source (13) en direction d’une scène (3) comprenant un objet (4) susceptible de réfléchir le faisceau source ; un détecteur (15) comprenant une matrice (16) de pixels (16A) photosensibles recevant une partie (18) du faisceau source réfléchi par l’objet ; et une unité électronique (19) configurée pour : générer un signal de modulation et commander le dispositif au moyen de ce signal de sorte que le faisceau source présente une puissance lumineuse source modulée temporellement ; traiter des signaux électriques délivrés en fonction du temps par le détecteur, chaque signal électrique étant représentatif d’une fraction de la puissance lumineuse source réfléchie en direction d’un pixel ; et déduire des signaux électriques, une distance caractéristique (Dobj) entre l’objet et le dispositif. Selon l’invention, l’unité est configurée pour, lorsque l’objet est détecté comme étant à une distance caractéristique inférieure à une distance seuil prédéterminée, commander le dispositif de manière à réduire en moyenne la puissance lumineuse source. Figure 2
FR1872981A 2018-12-14 2018-12-14 Capteur de temps de vol et système de surveillance comportant un tel capteur Active FR3090124B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR1872981A FR3090124B1 (fr) 2018-12-14 2018-12-14 Capteur de temps de vol et système de surveillance comportant un tel capteur
CN201980082468.0A CN113167874A (zh) 2018-12-14 2019-11-26 飞行时间传感器和包括这种传感器的监视系统
PCT/EP2019/082602 WO2020120128A1 (fr) 2018-12-14 2019-11-26 Capteur de temps de vol et système de surveillance comportant un tel capteur
EP19809075.5A EP3894886A1 (fr) 2018-12-14 2019-11-26 Capteur de temps de vol et système de surveillance comportant un tel capteur
US17/413,766 US20220050202A1 (en) 2018-12-14 2019-11-26 Flight time sensor and surveillance system comprising such a sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1872981A FR3090124B1 (fr) 2018-12-14 2018-12-14 Capteur de temps de vol et système de surveillance comportant un tel capteur

Publications (2)

Publication Number Publication Date
FR3090124A1 FR3090124A1 (fr) 2020-06-19
FR3090124B1 true FR3090124B1 (fr) 2022-07-15

Family

ID=67185115

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1872981A Active FR3090124B1 (fr) 2018-12-14 2018-12-14 Capteur de temps de vol et système de surveillance comportant un tel capteur

Country Status (5)

Country Link
US (1) US20220050202A1 (fr)
EP (1) EP3894886A1 (fr)
CN (1) CN113167874A (fr)
FR (1) FR3090124B1 (fr)
WO (1) WO2020120128A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3134548A1 (fr) * 2022-04-15 2023-10-20 Valeo Comfort And Driving Assistance procédé de commande d’une tête optique destinée à être utilisée dans un système d’observation d’un individu

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090273770A1 (en) * 2008-04-30 2009-11-05 Honeywell International Inc. Systems and methods for safe laser imaging, detection and ranging (lidar) operation
EP2469301A1 (fr) * 2010-12-23 2012-06-27 André Borowski Procédés et dispositifs pour générer une représentation d'une scène 3D à très haute vitesse
GB2492848A (en) * 2011-07-15 2013-01-16 Softkinetic Sensors Nv Optical distance measurement
WO2015157341A1 (fr) * 2014-04-07 2015-10-15 Samsung Electronics Co., Ltd. Capteur d'image à haute résolution, haute fréquence d'image et basse puissance
JP2017517748A (ja) * 2014-04-26 2017-06-29 テトラビュー， インコーポレイテッド 三次元撮像における奥行き検知のための、安定して広範囲の照明用波形のための方法とシステム
FR3056304B1 (fr) * 2016-09-16 2020-06-19 Valeo Comfort And Driving Assistance Circuit electronique et capteur de temps de vol comprenant un tel circuit electronique
DE102016124197A1 (de) * 2016-12-13 2018-06-14 Valeo Schalter Und Sensoren Gmbh Verfahren zur Abstandsmessung, Empfangseinrichtung einer Abstandsmessvorrichtung, Abstandsmessvorrichtung und Fahrerassistenzsystem
CN107450081B (zh) * 2017-08-14 2019-09-06 上海擎朗智能科技有限公司 一种零盲区测距系统

Also Published As

Publication number Publication date
US20220050202A1 (en) 2022-02-17
WO2020120128A1 (fr) 2020-06-18
FR3090124A1 (fr) 2020-06-19
EP3894886A1 (fr) 2021-10-20
CN113167874A (zh) 2021-07-23

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