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1. WO2020113021 - BLOCKAGE DETECTION & WEATHER DETECTION SYSTEM WITH LIDAR SENSOR

Publication Number WO/2020/113021
Publication Date 04.06.2020
International Application No. PCT/US2019/063633
International Filing Date 27.11.2019
IPC
G01S 7/481 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
481Constructional features, e.g. arrangements of optical elements
G01S 7/497 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
497Means for monitoring or calibrating
G01S 17/89 2020.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems, specially adapted for specific applications
89for mapping or imaging
G01S 17/95 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems, specially adapted for specific applications
95for meteorological use
CPC
G01C 3/08
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
3Measuring distances in line of sight; Optical rangefinders
02Details
06Use of electric means to obtain final indication
08Use of electric radiation detectors
G01S 17/89
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems specially adapted for specific applications
89for mapping or imaging
G01S 17/931
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems specially adapted for specific applications
93for anti-collision purposes
931of land vehicles
G01S 17/95
GPHYSICS
01MEASURING; TESTING
SRADIO 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
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems specially adapted for specific applications
95for meteorological use
G01S 2007/4977
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
497Means for monitoring or calibrating
4975of sensor obstruction by, e.g. dirt- or ice-coating, e.g. by reflection measurement on front-screen
4977including means to prevent or remove the obstruction
G01S 7/4813
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
481Constructional features, e.g. arrangements of optical elements
4811common to transmitter and receiver
4813Housing arrangements
Applicants
  • CONTINENTAL AUTOMOTIVE SYSTEMS, INC. [US]/[US]
Inventors
  • TEREFE, Nehemia
Agents
  • BINKOWSKI, Matthew
  • MACKIEWICZ, Christine M
Priority Data
16/204,81629.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BLOCKAGE DETECTION & WEATHER DETECTION SYSTEM WITH LIDAR SENSOR
(FR) SYSTÈME DE DÉTECTION MÉTÉOROLOGIQUE ET DE DÉTECTION DE BLOCAGE À CAPTEUR LIDAR
Abstract
(EN)
A method and apparatus detects foreign material on a window of a LIDAR sensor and determines existence of a bad weather condition (fog, spray, rain). The LIDAR sensor has an illumination portion including a light source; a receiving portion having at least one photodetector for receiving light, sent from the light source, that is reflected from an object in a field of view of receiving optics; a blockage detection portion adjacent to the illumination portion; and a window portion extending from the illumination portion to the blockage detection portion. The method prevents light, from the light source that is scattered when foreign material is on a surface of the window or when a bad weather condition exists, to pass into the receiving portion and permits such scattered light to pass into the blockage detection portion. The scattered light is collected on a photodiode disposed in the blockage detection portion.
(FR)
L'invention concerne un procédé et un appareil qui détectent des corps étrangers sur une fenêtre d'un capteur LIDAR et déterminent l'existence de mauvaises conditions météorologiques (brouillard, embruns, pluie). Le capteur LIDAR possède une partie d'éclairage comprenant une source de lumière ; une partie de réception ayant au moins un photodétecteur pour recevoir de la lumière, envoyée à partir de la source de lumière, qui est réfléchie par un objet dans un champ de vision d'une optique de réception ; une partie de détection de blocage adjacente à la partie d'éclairage ; et une partie de fenêtre s'étendant de la partie d'éclairage à la partie de détection de blocage. Le procédé empêche une lumière, provenant de la source de lumière qui est diffusée lorsque des corps étrangers sont sur une surface de la fenêtre ou lorsqu'il existe de mauvaises conditions météorologiques, de passer dans la partie de réception et permet à une cette lumière diffusée de passer dans la partie de détection de blocage. La lumière diffusée est collectée sur une photodiode disposée dans la partie de détection de blocage.
Also published as
Latest bibliographic data on file with the International Bureau