WO2020017491A1 - Système de capteur - Google Patents

Système de capteur Download PDF

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Publication number
WO2020017491A1
WO2020017491A1 PCT/JP2019/027877 JP2019027877W WO2020017491A1 WO 2020017491 A1 WO2020017491 A1 WO 2020017491A1 JP 2019027877 W JP2019027877 W JP 2019027877W WO 2020017491 A1 WO2020017491 A1 WO 2020017491A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
sensor unit
vehicle
unit
mirror
Prior art date
Application number
PCT/JP2019/027877
Other languages
English (en)
Japanese (ja)
Inventor
憲一 本村
Original Assignee
株式会社小糸製作所
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 株式会社小糸製作所 filed Critical 株式会社小糸製作所
Priority to JP2020531309A priority Critical patent/JPWO2020017491A1/ja
Publication of WO2020017491A1 publication Critical patent/WO2020017491A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/64—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by changing their light transmissivity, e.g. by liquid crystal or electrochromic devices
    • 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
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • 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
    • G01S7/481—Constructional features, e.g. arrangements of optical elements

Definitions

  • the present disclosure relates to a sensor system mounted on a vehicle.
  • a sensor for detecting information outside the vehicle In order to assist driving of the vehicle, it is necessary to mount a sensor for detecting information outside the vehicle on the vehicle body.
  • a sensor for detecting information outside the vehicle on the vehicle body.
  • Examples of such a sensor include a LiDAR (Light Detection and Ranging) sensor and a millimeter wave sensor (for example, see Patent Document 1).
  • the above-described sensor unit generally has relatively large dimensions and generally has an appearance significantly different from that of the lamp device. Therefore, when the sensor unit is to be arranged in the lamp device or in the vicinity of the lamp device, restrictions on the layout are increased. For example, if a decorative member such as an extension is provided to suppress a sense of discomfort in appearance, the detectable region of the sensor unit may interfere with the decorative member. That is, it is difficult to determine the layout of the sensor unit that can suppress a sense of discomfort in appearance while securing a desired detectable area.
  • One mode for responding to the above demand is a sensor system mounted on a vehicle, A sensor unit that detects information outside the vehicle using light, A first dimming mirror arranged to cover the detection surface of the sensor unit, It has.
  • the detection light used by the sensor unit for detecting information is allowed to pass.
  • the light control mirror is in the reflection state, not only detection light but also external light cannot pass through the light control mirror.
  • the external light includes at least visible light. Thereby, at least the detection surface of the sensor unit cannot be visually recognized from the outside.
  • the light control mirror is set to the reflection state, so that at least the detection surface is outward. Can be invisible from In other words, it is possible to allow the light control mirror to function as a conventional decorating member and suppress unnaturalness in appearance, while allowing detection light to pass when detection of information is necessary. Therefore, it is possible to efficiently detect information outside the vehicle while alleviating restrictions on the layout of the sensor unit mounted on the vehicle.
  • the above sensor system can be configured as follows. Comprising a processor for controlling the transparency of the first dimming mirror, The processor makes the first dimming mirror transparent at least when the sensor unit is operating.
  • the detection of information by the sensor unit can be reliably performed, and the period during which the state in which the sensor unit cannot be visually recognized from the outside can be minimized.
  • the above sensor system can be configured as follows.
  • a lamp unit that emits visible light to the outside of the vehicle,
  • a second dimming mirror arranged to cover at least a part of the first dimming mirror and the lamp unit,
  • a processor that controls the transparency of the first light control mirror and the transparency of the second light control mirror, With The processor sets the first light control mirror to a reflection state and the second light control mirror to a translucent state at least when the sensor unit is not operated.
  • lamp units are arranged at four corners of a vehicle.
  • the four corners are also places where there are few obstacles when detecting information outside the vehicle.
  • the detection of information is unnecessary, at least the detection can be performed by setting the first dimming mirror to the reflection state.
  • Surfaces can be made invisible from outside.
  • the first dimming mirror that makes the sensor unit invisible is visually recognized inside the second dimming mirror. That is, an appearance with a sense of depth can be provided.
  • the above sensor system can be configured as follows.
  • the sensor unit includes at least one of a LiDAR sensor unit, a camera unit, and a millimeter wave radar unit.
  • sensor unit means a component unit of a part that can provide a desired information detection function and can be distributed by itself.
  • detection surface of the sensor unit means a surface that is a part of the sensor unit and through which light related to detection of information by the sensor unit passes.
  • the term “light” refers to electromagnetic waves having any wavelength.
  • the term “light” in this specification is used to include not only visible light but also ultraviolet light, infrared light, millimeter waves, and microwaves.
  • the term "when the sensor unit is activated” means a period during which the sensor unit is performing detection of information outside the vehicle.
  • lamp unit used in this specification means a component unit of a part that can provide a desired lighting function and can be distributed as a single unit.
  • FIG. 1 illustrates a configuration of a sensor system according to a first embodiment.
  • 9 illustrates one state of a sensor system according to a second embodiment.
  • 3 illustrates a position of the sensor system in FIG. 2 in a vehicle. 3 illustrates another state of the sensor system of FIG. 2.
  • FIG. 1 schematically illustrates the configuration of a sensor system 10 according to the first embodiment.
  • the sensor system 10 includes a LiDAR sensor unit 11 and a light control mirror 12.
  • the LiDAR sensor unit 11 includes a light emitting element and a light receiving element.
  • the light emitting element emits the detection light L1 to the outside of the vehicle.
  • the light receiving element detects return light L2 generated by reflection of the detection light L1 on an object existing outside the vehicle.
  • the LiDAR sensor unit 11 can include a scanning mechanism that sweeps the detection light L1 and changes the emission direction (that is, the detection direction) as necessary.
  • the invisible light for example, infrared light having a wavelength of 905 nm can be used.
  • the distance to the object associated with the return light L2 can be obtained based on the time from when the detection light L1 is emitted in a certain direction to when the return light L2 is detected.
  • the distance data by accumulating such distance data in association with the detection position, it is possible to acquire information on the shape of the object associated with the return light L2.
  • information on attributes such as the material of the object associated with the return light L2 can be acquired based on the difference between the waveforms of the detection light L1 and the return light L2.
  • the dimming mirror 12 is an optical element whose transmittance can be changed between a transparent state in which at least most of the incident light passes and a reflection state in which at least most of the incident light is reflected.
  • the light control mirror 12 may operate by a gas chromic method or may operate by an electrochromic method.
  • the light control mirror 12 is an example of a first light control mirror.
  • the dimming mirror 12 is disposed so as to cover the detection surface 11a of the LiDAR sensor unit 11.
  • the detection surface 11a is a surface through which the detection light L1 and the return light L2 pass. Therefore, when the light control mirror 12 is made transparent, the detection light L1 and the return light L2 are allowed to pass as shown by the broken line.
  • the light control mirror 12 when the light control mirror 12 is in the reflection state, not only the detection light L1 but also the external light E cannot pass through the light control mirror 12.
  • the external light E includes at least visible light. As a result, at least the detection surface 11a of the LiDAR sensor unit 11 cannot be visually recognized from the outside.
  • the dimming mirror 12 is set in the reflection state to at least detect the detection surface. 11a can be made invisible from outside. In other words, it is possible to make the light control mirror 12 function like a conventional decorating member and suppress unnaturalness in appearance, and to pass light related to detection when information detection is necessary. Therefore, information on the outside of the vehicle can be efficiently detected while alleviating the restrictions on the layout of the LiDAR sensor unit 11 mounted on the vehicle.
  • the sensor system 1 can include the processor 13.
  • the processor 13 is configured to cooperatively control the operation of the LiDAR sensor unit 11 and the transparency of the light control mirror 12.
  • the light control mirror 12 is configured to be in a transparent state at least when the LiDAR sensor unit 11 operates.
  • the function of the processor 13 may be realized by a general-purpose microprocessor operating in cooperation with a memory, or may be realized by a dedicated storage circuit such as a microcontroller, an FPGA, or an ASIC.
  • the processor 13 can be arranged at any position in the vehicle.
  • the processor 13 may be provided as a part of a main ECU that performs central control processing in the vehicle, or may be provided as a part of a sub ECU that is interposed between the main ECU and the LiDAR sensor unit 11.
  • the detection of information by the LiDAR sensor unit 11 can be reliably performed, and the period during which the LiDAR sensor unit 11 cannot be visually recognized from the outside can be minimized.
  • FIG. 2 schematically illustrates a configuration of a sensor system 20 according to the second embodiment.
  • the sensor system 20 includes a LiDAR sensor unit 21, a lamp unit 22, a first dimming mirror 23, a second dimming mirror 24, and a processor 25.
  • At least the LiDAR sensor unit 11, the lamp unit 22, the first dimming mirror 23, and the second dimming mirror 24 can be mounted on the left front corner LF of the vehicle 100 illustrated in FIG.
  • an arrow F indicates a forward direction of the vehicle 100.
  • Arrow B indicates the rear direction of the vehicle 100.
  • the arrow L indicates the left direction of the vehicle 100.
  • the arrow R indicates the right direction of the vehicle 100.
  • “Left” and “right” used here indicate the left and right directions as viewed from the driver's seat.
  • the LiDAR sensor unit 21 has substantially the same configuration and function as the LiDAR sensor unit 11 according to the first embodiment. Therefore, the repeated explanation is omitted.
  • the lamp unit 22 is a device that emits visible light to the outside of the vehicle 100.
  • Examples of the lamp unit 22 include a headlight unit, a vehicle width light unit, a direction indicator light unit, and a fog light unit.
  • the first dimming mirror 23 is an optical element whose transmittance can be changed between a transparent state in which at least most of the incident light passes and a reflection state in which at least most of the incident light is reflected.
  • the first dimming mirror 23 may operate in a gas chromic system or may operate in an electrochromic system. As illustrated in FIG. 2, the first dimming mirror 23 is disposed so as to cover the detection surface 21a of the LiDAR sensor unit 21.
  • the detection surface 21a is a surface through which the detection light L1 and the return light L2 pass.
  • the second dimming mirror 24 is an optical element whose transmittance can be changed between a transparent state in which at least most of the incident light passes and a reflection state in which at least most of the incident light is reflected.
  • the second dimming mirror 24 may operate in a gas chromic system or may operate in an electrochromic system.
  • the second light control mirror 24 is disposed so as to cover at least a part of the lamp unit 22 and the first light control mirror 23.
  • the processor 25 is configured to cooperatively control the operation of the LiDAR sensor unit 21, the transparency of the first light control mirror 23, and the transparency of the second light control mirror 24.
  • the processor 25 is configured to make the first light control mirror 23 and the second light control mirror 24 transparent at least when the LiDAR sensor unit 11 operates. Thereby, the detection light L1 and the return light L2 can pass through the first light control mirror 23 and the second light control mirror 24.
  • the illumination light L3 emitted from the lamp unit 22 can also pass through the first light control mirror 23 and the second light control mirror 24.
  • the processor 25 sets the first light control mirror 23 to the reflection state and the second light control mirror 24 to the semi-transparent state at least when the LiDAR sensor unit 11 is not operating.
  • the “translucent state” means a state in which the transparency is higher than the reflection state and the transparency is lower than the transparency state.
  • the lamp unit 22 is arranged at the left front corner LF of the vehicle 100.
  • the location is also a location where there are few obstacles when detecting information outside the vehicle 100.
  • the first dimming mirror 23 is set to the reflection state when the detection of information is unnecessary. Thereby, at least the detection surface 21a can be made invisible from the outside.
  • the first light control mirror 23 function like a conventional decorating member to suppress a sense of discomfort in appearance, and to pass light related to detection when information detection is necessary. is there. Therefore, information on the outside of the vehicle can be efficiently detected while alleviating the restrictions on the layout of the LiDAR sensor unit 21 mounted on the vehicle.
  • part of the illumination light L3 emitted from the lamp unit 22 passes through the second dimming mirror 24 in a semi-transparent state. Another part of the illumination light L3 is reflected by the second light control mirror 24 toward the first light control mirror 23, and is further subjected to reflection by the first light control mirror 23 in a reflection state. The reflected light L4 generated in this manner passes through the second dimming mirror 24 and goes outward of the vehicle 100.
  • the first dimming mirror 23 that makes the LiDAR sensor unit 21 invisible is visually recognized inside the second dimming mirror 24. That is, an appearance with a sense of depth can be provided.
  • a camera unit may be used in addition to or instead of the LiDAR sensor unit.
  • the camera unit is a device for acquiring image information outside the vehicle. That is, the camera unit is an example of a sensor unit that detects information outside the vehicle 100.
  • a visible light camera unit, an infrared camera unit, and a TOF (Time @ of @ Flight) camera unit can be used.
  • a millimeter wave radar unit may be used in addition to or instead of the LiDAR sensor unit.
  • the millimeter wave radar unit has a configuration for transmitting a millimeter wave and a configuration for receiving a reflected wave generated by reflecting the millimeter wave on an object existing outside the vehicle 100.
  • Examples of the millimeter wave frequency include 24 GHz, 26 GHz, 76 GHz, 79 GHz, and the like.
  • the millimeter-wave radar unit By using the millimeter-wave radar unit, for example, the distance to the object associated with the reflected wave can be acquired based on the time from when the millimeter wave is transmitted in a certain direction to when the reflected wave is received. In addition, by accumulating such distance data in association with the detected position, it is possible to acquire information on the motion of the object associated with the reflected wave. That is, the millimeter wave radar unit is an example of a sensor unit that detects information external to the vehicle 100.
  • At least two of the LiDAR sensor unit, the camera unit, and the millimeter-wave radar unit may constitute a single sensor unit.
  • At least the LiDAR sensor unit 21, the lamp unit 22, the first dimming mirror 23, and the second dimming mirror 24 in the sensor system 20 according to the second embodiment include the right front corner RF of the vehicle 100 shown in FIG.
  • the rear corner LB and the right rear corner RB may be arranged at least in one of the rear corner LB and the right rear corner RB.
  • Examples of the lamp unit 22 disposed at the left rear corner LB and the right rear corner RB include a stop lamp unit, a brake lamp unit, a direction indicator unit, and a vehicle width lamp unit.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne une unité de capteur LiDAR (11) qui utilise une lumière de détection (L1) pour détecter des informations associées à l'extérieur d'un véhicule. Un miroir de réglage de lumière (12) est disposé de manière à recouvrir une surface de détection (11a) de l'unité de capteur LiDAR (11).
PCT/JP2019/027877 2018-07-18 2019-07-16 Système de capteur WO2020017491A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2020531309A JPWO2020017491A1 (ja) 2018-07-18 2019-07-16 センサシステム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018134897 2018-07-18
JP2018-134897 2018-07-18

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WO2020017491A1 true WO2020017491A1 (fr) 2020-01-23

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PCT/JP2019/027877 WO2020017491A1 (fr) 2018-07-18 2019-07-16 Système de capteur

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3943977A1 (fr) * 2020-07-20 2022-01-26 Infineon Technologies AG Appareil comprenant un capteur de durée de vol et procédé de caractérisation d'un capteur de durée de vol

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002528745A (ja) * 1998-10-20 2002-09-03 ジェンテクス・コーポレーション 第３面反射器を備えたエレクトロクロミックミラー
JP2009015562A (ja) * 2007-07-04 2009-01-22 Honda Motor Co Ltd 車両用物体検出装置
CN102951065A (zh) * 2012-11-07 2013-03-06 浙江吉利汽车研究院有限公司杭州分公司 汽车前照灯及改变汽车前照灯照射距离的方法
WO2017138100A1 (fr) * 2016-02-10 2017-08-17 株式会社日立製作所 Lumière pour véhicule et système de lumière pour véhicule
WO2018030239A1 (fr) * 2016-08-12 2018-02-15 株式会社小糸製作所 Système d'éclairage et système de capteur
JP2019081395A (ja) * 2017-10-27 2019-05-30 京セラ株式会社 サイドミラー装置、サイドミラーシステム、および車両

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002528745A (ja) * 1998-10-20 2002-09-03 ジェンテクス・コーポレーション 第３面反射器を備えたエレクトロクロミックミラー
JP2009015562A (ja) * 2007-07-04 2009-01-22 Honda Motor Co Ltd 車両用物体検出装置
CN102951065A (zh) * 2012-11-07 2013-03-06 浙江吉利汽车研究院有限公司杭州分公司 汽车前照灯及改变汽车前照灯照射距离的方法
WO2017138100A1 (fr) * 2016-02-10 2017-08-17 株式会社日立製作所 Lumière pour véhicule et système de lumière pour véhicule
WO2018030239A1 (fr) * 2016-08-12 2018-02-15 株式会社小糸製作所 Système d'éclairage et système de capteur
JP2019081395A (ja) * 2017-10-27 2019-05-30 京セラ株式会社 サイドミラー装置、サイドミラーシステム、および車両

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3943977A1 (fr) * 2020-07-20 2022-01-26 Infineon Technologies AG Appareil comprenant un capteur de durée de vol et procédé de caractérisation d'un capteur de durée de vol

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