WO2021075299A1 - 車両用灯具システム、異物判定装置および異物判定方法 - Google Patents
車両用灯具システム、異物判定装置および異物判定方法 Download PDFInfo
- Publication number
- WO2021075299A1 WO2021075299A1 PCT/JP2020/037745 JP2020037745W WO2021075299A1 WO 2021075299 A1 WO2021075299 A1 WO 2021075299A1 JP 2020037745 W JP2020037745 W JP 2020037745W WO 2021075299 A1 WO2021075299 A1 WO 2021075299A1
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- Prior art keywords
- lamp
- foreign matter
- vehicle
- distribution pattern
- light
- Prior art date
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- 238000000034 method Methods 0.000 title claims description 10
- 239000000126 substance Substances 0.000 title abstract description 7
- 238000003384 imaging method Methods 0.000 claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims description 33
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- 230000000694 effects Effects 0.000 description 1
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- 229910052736 halogen Inorganic materials 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
- B60S1/60—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for signalling devices, e.g. reflectors
- B60S1/603—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for signalling devices, e.g. reflectors the operation of at least a part of the cleaning means being controlled by electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/56—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens
- B60S1/60—Cleaning windscreens, windows or optical devices specially adapted for cleaning other parts or devices than front windows or windscreens for signalling devices, e.g. reflectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0017—Devices integrating an element dedicated to another function
- B60Q1/0023—Devices integrating an element dedicated to another function the element being a sensor, e.g. distance sensor, camera
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
- B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
- B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
- B60S1/0833—Optical rain sensor
- B60S1/0844—Optical rain sensor including a camera
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/956—Inspecting patterns on the surface of objects
- G01N21/95607—Inspecting patterns on the surface of objects using a comparative method
- G01N2021/95615—Inspecting patterns on the surface of objects using a comparative method with stored comparision signal
Definitions
- the present invention relates to a vehicle lamp system, a foreign matter determination device, and a foreign matter determination method.
- Patent Document 1 proposes a cleaning device that injects a cleaning liquid from an injection nozzle to clean the light emitting surface of a vehicle lamp.
- the fact that the light emitting surface of the vehicle lighting equipment is dirty means that the driver and other passengers notice that the front remains dark even when the vehicle lighting equipment is turned on, or the drivers from outside the vehicle. It was detected by visually checking the light emitting surface. For this reason, the dirt on the light emitting surface may be left unnoticed. In this case, the state in which the safety of vehicle driving is lowered continues.
- the present invention has been made in view of such a situation, and one of the objects thereof is to provide a technique for enhancing the safety of vehicle driving.
- One aspect of the present invention is a vehicle lighting system.
- a vehicle lamp capable of emitting light to the front region of the vehicle to form a predetermined light distribution pattern
- an imaging device for imaging the front region and the vehicle lamp have foreign matter adhered to the light emitting surface.
- the storage unit that stores the light distribution pattern formed in the front region in the non-existing state as a reference pattern, and the light distribution pattern imaged by the imaging device are compared with the reference pattern to determine the adhesion of foreign matter to the light emitting surface.
- a foreign matter determination device having a determination unit is provided.
- Another aspect of the present invention is a foreign matter determination device.
- This device emits light to the front region of the vehicle to form a predetermined light distribution pattern, and forms a light distribution pattern in the front region with no foreign matter adhering to the light emitting surface. It includes a storage unit that stores as a reference pattern, and a determination unit that compares the light distribution pattern imaged by the imaging device that images the front region with the reference pattern to determine the adhesion of foreign matter to the light emitting surface.
- Another aspect of the present invention is a foreign matter determination method.
- a vehicle lamp capable of emitting light to the front region of the vehicle to form a predetermined light distribution pattern forms a light distribution pattern in the front region with no foreign matter adhering to the light emitting surface. This includes determining the adhesion of foreign matter to the light emitting surface by comparing it with the light distribution pattern imaged by the imaging device that images the front region.
- the safety of vehicle driving can be enhanced.
- FIG. 2A is a schematic diagram showing a reference pattern.
- FIG. 2B is a schematic view showing a light distribution pattern formed in a state where foreign matter is attached to the light emitting surface. It is a flowchart of the foreign matter determination control which concerns on one Example.
- FIG. 1 is a block diagram of a vehicle lighting system according to the embodiment.
- FIG. 2A is a schematic diagram showing a reference pattern.
- FIG. 2B is a schematic view showing a light distribution pattern formed in a state where foreign matter is attached to the light emitting surface.
- a part of the components of the vehicle lighting system 1 is drawn as a functional block.
- These functional blocks are realized by elements and circuits such as a computer CPU and memory as a hardware configuration, and are realized by a computer program or the like as a software configuration. Those skilled in the art will understand that these functional blocks can be realized in various ways by combining hardware and software.
- the vehicle lamp system 1 includes a vehicle lamp 2, an image pickup device 4, a foreign matter determination device 6, a cleaning device 8, and a notification device 10.
- the vehicle lamp 2 is a device capable of forming a predetermined light distribution pattern PTN by emitting light to the front region of the vehicle 100. For example, the vehicle lamp 2 irradiates the visible light beam L1 on the front region of the vehicle 100.
- the light distribution pattern PTN is grasped as a two-dimensional illuminance distribution of the irradiation pattern 902 formed by the vehicle lamp 2 on the virtual vertical screen 900 in front of the vehicle.
- the vehicle lamp 2 has a light source unit 12 and a housing 14 that houses the light source unit 12.
- the structure of the light source unit 12 is not particularly limited.
- the light source unit 12 drives a semiconductor light emitting element such as an LED (light emitting diode), LD (laser diode), organic or inorganic EL (electroluminescence), a light source such as an incandescent bulb, a halogen lamp, or a discharge bulb, and a light source. It may include a lighting circuit for lighting.
- the light source unit 12 may include a reflector; a projection lens; a matrix type pattern forming device such as a DMD (Digital Mirror Device) or a liquid crystal device; a scan optical type pattern forming device that scans the front of the vehicle with the light source light. ..
- a matrix type pattern forming device such as a DMD (Digital Mirror Device) or a liquid crystal device
- a scan optical type pattern forming device that scans the front of the vehicle with the light source light. ..
- the structure of the housing 14 is not particularly limited.
- the housing 14 has a lamp body having an opening on the front side of the vehicle and a translucent cover attached so as to cover the opening of the lamp body.
- the light source unit 12 is housed in a lamp chamber partitioned by a lamp body and a translucent cover.
- the translucent cover constitutes the light emitting surface 16 of the vehicle lamp 2.
- the vehicle lamp 2 of the present embodiment includes the first lamp 2a and the second lamp 2b.
- the first lamp 2a is arranged at the left front end of the vehicle 100
- the second lamp 2b is arranged at the right front end of the vehicle 100.
- the arrangement of the first lamp 2a and the second lamp 2b is not particularly limited.
- the first lamp 2a and the second lamp 2b each have a light source unit 12 and a housing 14.
- the image pickup device 4 has sensitivity in the wavelength range of the light emitted by the vehicle lamp 2, and images the front region of the vehicle 100.
- the image pickup device 4 is composed of a known camera or the like, and captures the reflected light L2 of the visible light beam L1 by an object in front of the vehicle.
- the image pickup device 4 is housed in the housing 14 of the vehicle lamp 2.
- the image pickup device 4 of the present embodiment includes a first image pickup device 4a and a second image pickup device 4b.
- the first image pickup device 4a is housed in the housing 14 of the first lamp tool 2a
- the second image pickup device 4b is housed in the housing 14 of the second lamp tool 2b.
- the cleaning device 8 is a known headlamp cleaner, and can clean the light emitting surface 16 by ejecting the cleaning liquid toward the light emitting surface 16.
- the notification device 10 notifies the passenger of the vehicle 100 of the adhesion of foreign matter to the light emitting surface 16.
- the notification device 10 can be composed of, for example, a warning light (indicator) provided on the instrument panel of the vehicle 100.
- the foreign matter determination device 6 executes determination of adhesion of foreign matter to the light emitting surface 16 based on the image IMG obtained from the image pickup device 4.
- the foreign matter determination device 6 can be configured by a digital processor, for example, may be configured by a combination of a microcomputer including a CPU and a software program, or may be configured by an FPGA (Field Programmable Gate Array), an ASIC (Application Specified IC), or the like. You may.
- the foreign matter determination device 6 may be provided on the vehicle 100 side, or may be built in the vehicle lamp 2.
- the foreign matter determination device 6 includes a storage unit 18, a determination unit 20, a lamp control unit 22, a cleaning control unit 24, and a notification control unit 26. Each part operates by executing a program held in a memory by an integrated circuit constituting itself.
- the storage unit 18 stores the light distribution pattern PTN formed in the front region of the vehicle lamp 2 in a state where no foreign matter is attached to the light emitting surface 16 as a reference pattern PTNr.
- FIG. 2A shows a high beam light distribution pattern as an example of the reference pattern PTNr.
- the reference pattern PTNr is, for example, imaged by the image pickup apparatus 4 in advance before the shipment of the vehicle lamp system 1. Then, the image IMG containing the reference pattern PTNr is stored in the storage unit 18.
- the front of the own vehicle is imaged by the second imaging device 4b, and the image IMG obtained thereby includes the reference pattern PTNr of the first lamp 2a. It is stored in the storage unit 18 as an image IMG. Further, in a state where the first lamp 2a is turned off and the second lamp 2b is turned on, the front of the own vehicle is imaged by the first imaging device 4a, and the image IMG obtained thereby includes an image including the reference pattern PTNr of the second lamp 2b. It is stored in the storage unit 18 as an IMG.
- the determination unit 20 compares the light distribution pattern PTN imaged by the image pickup device 4, that is, the light distribution pattern PTN included in the image IMG of the image pickup device 4, with the reference pattern PTNr, and attaches foreign matter to the light emitting surface 16. To judge. In a state where foreign matter is attached to the light emitting surface 16, as shown in FIG. 2B, a light-shielding portion 28 caused by the foreign matter is included in the light distribution pattern PTN.
- the determination unit 20 can determine the adhesion of foreign matter to the light emitting surface 16 by comparing the reference pattern PTNr with the light distribution pattern PTN based on a known detection algorithm.
- the lamp control unit 22 switches the on / off of the first lamp 2a and the second lamp 2b independently of each other. Then, the determination unit 20 of the present embodiment compares the light distribution pattern PTN imaged by the image pickup apparatus 4 with the light distribution pattern PTN imaged by the image pickup apparatus 4 in a state where one lamp is lit and the other lamp is extinguished, and lights the reference pattern PTNr. It is determined that foreign matter adheres to the light emitting surface 16 of the lamp.
- the image pickup device 4 of the present embodiment includes the first image pickup device 4a housed in the housing 14 of the first lamp tool 2a and the second image pickup device 4 housed in the housing 14 of the second lamp tool 2b. It has 4b and.
- the determination unit 20 includes a light distribution pattern PTN imaged by the imaging device 4 housed in the housing 14 of the lamp that is turned off while one lamp is on and the other lamp is off, and a reference pattern PTNr. Is compared to determine the adhesion of foreign matter to the light emitting surface 16 of the lit lamp.
- FIG. 1 shows a state in which the front region is imaged by the second imaging device 4b in a state where the first lamp 2a is lit and the second lamp 2b is extinguished.
- the light distribution pattern PTN included in the image IMG obtained from the second imaging device 4b is compared with the reference pattern PTNr of the first lamp 2a, and foreign matter adheres to the light emitting surface 16 of the first lamp 2a. It is judged.
- the cleaning control unit 24 controls the cleaning device 8 based on the determination result of the determination unit 20. For example, when the determination unit 20 determines that foreign matter is attached to the light emitting surface 16, it transmits a signal indicating that the foreign matter is attached to the cleaning control unit 24. Upon receiving the signal, the cleaning control unit 24 transmits a drive signal to the cleaning device 8. Upon receiving the drive signal, the cleaning device 8 injects the cleaning liquid onto the light emitting surface 16.
- the notification control unit 26 controls the notification device 10 based on the determination result of the determination unit 20. For example, when the determination unit 20 determines that foreign matter is attached to the light emitting surface 16, it transmits a signal indicating that the foreign matter is attached to the notification control unit 26. Upon receiving the signal, the notification control unit 26 transmits a drive signal to the notification device 10. Upon receiving the drive signal, the notification device 10 turns on the warning light.
- the foreign matter determination device 6 executes the foreign matter adhesion determination in a situation where the light distribution pattern PTN is stably formed.
- the situation in which the light distribution pattern PTN is stably formed is, for example, when the traveling vehicle 100 is stopped, when the engine is started, or the like.
- the foreign matter determination device 6 can detect it by receiving a vehicle speed signal from the ECU or the like of the vehicle 100.
- the foreign matter determination device 6 can detect it by receiving an engine rotation signal from the ECU or the like of the vehicle 100.
- FIG. 3 is a flowchart of a foreign matter determination control according to an embodiment. This flow is repeatedly executed by the foreign matter determination device 6 at a predetermined timing when the ignition switch of the vehicle 100 is on.
- the foreign matter determination device 6 determines whether or not the light distribution pattern PTN is stably formed (S101). If the light distribution pattern PTN is not in a stable formation state (N in S101), this routine is terminated.
- the foreign matter determination device 6 turns on the first lamp 2a and turns off the second lamp 2b (S102). In this state, the foreign matter determination device 6 images the front region of the vehicle 100 by the second image pickup device 4b (S103). Subsequently, the foreign matter determination device 6 turns off the first lamp 2a and turns on the second lamp 2b (S104). In this state, the foreign matter determination device 6 images the front region of the vehicle 100 with the first image pickup device 4a (S105).
- the foreign matter determination device 6 compares the light distribution pattern PTN imaged by the second imaging device 4b with the reference pattern PTNr of the first lamp 2a held in the storage unit 18, and compares the light emitting surface of the first lamp 2a. It is determined whether or not foreign matter is attached to 16 (S106). Further, the foreign matter determination device 6 compares the light distribution pattern PTN imaged by the first imaging device 4a with the reference pattern PTNr of the second lamp 2b held in the storage unit 18, and compares the light of the second lamp 2b. It is determined whether or not foreign matter is attached to the exit surface 16 (S106).
- the foreign matter determining device 6 drives the cleaning device 8 to clean the light emitting surface 16 and drives the notification device 10.
- the driver of the vehicle 100 is notified of the adhesion of foreign matter (S107). After that, this routine ends.
- the foreign matter determining device 6 attaches the foreign matter to the light emitting surface 16. Only the corresponding cleaning device 8 may be driven, or both cleaning devices 8 may be driven uniformly.
- the vehicle lighting system 1 captures the vehicle lighting 2 capable of emitting light to the front region of the vehicle 100 to form a predetermined light distribution pattern PTN and the front region.
- a foreign matter determination device 6 having a determination unit 20 for determining adhesion of foreign matter to the light emitting surface 16 by comparing the light distribution pattern PTN and the reference pattern PTNr.
- the foreign matter determination device 6 automatically determines that foreign matter is attached to the light emitting surface 16. This makes it possible to eliminate the annoyance that the driver feels when he / she is forced to monitor the adhesion of foreign matter. Further, it is possible to prevent the state in which foreign matter is attached to the light emitting surface 16 from being left for a long period of time. Therefore, the safety of vehicle driving can be enhanced. Further, the foreign matter determination device 6 uses the light distribution pattern PTN as a criterion for determining foreign matter adhesion. Therefore, the degree of freedom in installing the image pickup device 4 can be increased as compared with the case where the image pickup device 4 directly images the light emitting surface 16 to detect the adhesion of foreign matter.
- the vehicle lamp 2 includes the first lamp 2a and the second lamp 2b
- the foreign matter determination device 6 has a lamp control unit 22 that independently switches the on / off of the first lamp 2a and the second lamp 2b. Then, the determination unit 20 compares the light distribution pattern PTN imaged by the image pickup apparatus 4 with the light distribution pattern PTN imaged by the image pickup apparatus 4 in a state where one lamp is lit and the other lamp is extinguished, and compares the reference pattern PTNr with the lit lamp. It is determined that foreign matter adheres to the light emitting surface 16.
- the vehicle lamp system 1 includes a plurality of lamps, it is possible to determine which lamp has foreign matter attached to it. It is also possible to use the cleaning device 8 to clean only the lamps to which foreign matter is attached.
- the lighting of the first lamp 2a and the second lamp 2b may be uniformly switched to determine the adhesion of foreign matter without distinguishing between the first lamp 2a and the second lamp 2b.
- the vehicle lamp 2 has a light source unit 12 and a housing 14 accommodating the light source unit 12, and the imaging device 4 is housed in the housing 14.
- the reference pattern PTNr can be imaged by the image pickup apparatus 4 and stored in the storage unit 18 before assembling the vehicle lamp 2 to the vehicle 100. Therefore, the vehicle lighting system 1 according to the present embodiment can be realized more easily. Further, the projection angle of the light distribution pattern PTN of the vehicle lamp 2 and the angle of view of the image pickup apparatus 4 can be brought close to each other. Therefore, it is possible to more accurately detect the presence or absence of foreign matter adhering, the adhering position, and the like.
- the image pickup device 4 may be arranged outside the housing 14. As a result, the size of the vehicle lamp 2 can be reduced. Further, for example, the camera in the vehicle interior can be used as the image pickup device 4, and the number of parts and the mounting cost of the vehicle lighting system 1 can be reduced.
- the first lamp 2a and the second lamp 2b each have a light source unit 12 and a housing 14, and the image pickup device 4 has a first image pickup device 4a housed in the housing 14 of the first lamp 2a.
- the second imaging device 4b housed in the housing 14 of the second lamp 2b.
- the determination unit 20 has a light distribution pattern PTN imaged by the image pickup device 4 housed in the housing 14 of the lamp that is turned off while one lamp is on and the other lamp is off, and a reference pattern. By comparing with PTNr, it is determined that foreign matter adheres to the light emitting surface 16 of the lit lamp.
- the image pickup device 4 When the image pickup device 4 is housed in the housing 14, when the light source unit 12 housed in the same housing 14 is turned on, the light reflected on the light emitting surface 16 may be irradiated to the image pickup device 4. When the light reflected on the light emitting surface 16 hits the image pickup device 4, the light is reflected on the image IMG, and it becomes difficult to acquire the image IMG in which the light distribution pattern PTN is accurately captured. As a result, the accuracy of determining foreign matter adhesion may decrease.
- the light distribution pattern PTN projected on the front region is imaged by the imaging device 4 housed in the lighting equipment that is turned off. Therefore, the light distribution pattern PTN can be imaged more accurately, and the accuracy of determining foreign matter adhesion can be improved. Further, since the light source unit 12 and the image pickup device 4 can be arranged without worrying about the reflection of the reflected light on the image IMG, the degree of freedom in designing the vehicle lamp system 1 can be increased.
- the light distribution pattern PTN may be acquired by the image pickup device 4 housed in the same housing 14 as the lighting fixture.
- the image pickup device 4 is housed only in the housing 14 of the first lamp tool 2a, and the light distribution pattern PTN of the first lamp tool 2a and the light distribution pattern PTN of the second lamp tool 2b are imaged by the image pickup device 4, respectively. ..
- the number of image pickup devices 4 can be reduced, and the mounting cost of the vehicle lighting equipment system 1 can be reduced.
- the vehicle lamp system 1 includes a cleaning device 8 for cleaning the light emitting surface 16 of the vehicle lamp 2, and the foreign matter determination device 6 controls the cleaning device 8 based on the determination result of the determination unit 20. It has a part 24. As a result, foreign matter adhering to the light emitting surface 16 can be removed.
- the vehicle lighting system 1 includes a notification device 10 for notifying the occupants of the vehicle 100 of the adhesion of foreign matter to the light emitting surface 16 of the vehicle lighting tool 2, and the foreign matter determination device 6 includes the determination result of the determination unit 20. It has a notification control unit 26 that controls the notification device 10 based on the above. This makes it possible to notify the driver of the adhesion of foreign matter.
- the foreign matter determination device 6 may include only one of the cleaning control unit 24 and the notification control unit 26.
- the vehicle lamp 2 capable of emitting light to the front region of the vehicle 100 to form a predetermined light distribution pattern PTN forms a light distribution pattern PTN in the front region in a state where no foreign matter is attached to the light emitting surface 16.
- a storage unit 18 that stores as a reference pattern PTNr A determination unit 20 for determining the adhesion of foreign matter to the light emitting surface 16 by comparing the light distribution pattern PTN imaged by the imaging device 4 that images the front region with the reference pattern PTNr.
- Foreign matter determination device 6 The vehicle lamp 2 capable of emitting light to the front region of the vehicle 100 to form a predetermined light distribution pattern PTN forms a light distribution pattern PTN in the front region in a state where no foreign matter is attached to the light emitting surface 16.
- a storage unit 18 that stores as a reference pattern PTNr
- the vehicle lamp 2 capable of emitting light to the front region of the vehicle 100 to form a predetermined light distribution pattern PTN has a light distribution pattern PTN formed in the front region in a state where no foreign matter is attached to the light emitting surface 16.
- a method for determining a foreign substance which comprises comparing the light distribution pattern PTN imaged by the imaging device 4 that images the front region with the light distribution pattern PTN, and determining the adhesion of the foreign substance to the light emitting surface 16.
- the present invention can be used in a vehicle lamp system, a foreign matter determination device, and a foreign matter determination method.
- Vehicle lamp system 2 Vehicle lamp, 2a 1st lamp, 2b 2nd lamp, 4 Imaging device, 4a 1st imaging device, 4b 2nd imaging device, 6 Foreign matter judgment device, 8 Cleaning device, 10 Notification device, 12 light source unit, 14 housing, 16 light emitting surface, 18 storage unit, 20 judgment unit, 22 lamp control unit, 24 cleaning control unit, 26 notification control unit.
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Abstract
Description
車両100の前方領域に光を出射して所定の配光パターンPTNを形成可能な車両用灯具2が、光出射面16に異物が付着していない状態で前方領域に形成する配光パターンPTNを、基準パターンPTNrとして記憶する記憶部18と、
前方領域を撮像する撮像装置4が撮像した配光パターンPTNと基準パターンPTNrとを比較して、光出射面16への異物の付着を判定する判定部20と、
を備える異物判定装置6。
車両100の前方領域に光を出射して所定の配光パターンPTNを形成可能な車両用灯具2が、光出射面16に異物が付着していない状態で前方領域に形成する配光パターンPTNと、前方領域を撮像する撮像装置4が撮像した配光パターンPTNとを比較して、光出射面16への異物の付着を判定することを含む異物判定方法。
Claims (8)
- 車両の前方領域に光を出射して所定の配光パターンを形成可能な車両用灯具と、
前記前方領域を撮像する撮像装置と、
前記車両用灯具が、光出射面に異物が付着していない状態で前記前方領域に形成する配光パターンを、基準パターンとして記憶する記憶部、および前記撮像装置が撮像した配光パターンと前記基準パターンとを比較して前記光出射面への異物の付着を判定する判定部を有する異物判定装置と、
を備える車両用灯具システム。 - 前記車両用灯具は、第1灯具および第2灯具を含み、
前記異物判定装置は、前記第1灯具および前記第2灯具の点消灯を独立に切り替える灯具制御部を有し、
前記判定部は、一方の灯具が点灯し他方の灯具が消灯している状態で前記撮像装置が撮像した配光パターンと、前記基準パターンとを比較して、点灯している灯具の前記光出射面への異物の付着を判定する請求項1に記載の車両用灯具システム。 - 前記車両用灯具は、光源部と、前記光源部を収容する筐体と、を有し、
前記撮像装置は、前記筐体に収容される請求項1または2に記載の車両用灯具システム。 - 前記第1灯具および前記第2灯具は、それぞれ光源部と、前記光源部を収容する筐体と、を有し、
前記撮像装置は、前記第1灯具の筐体に収容される第1撮像装置と、前記第2灯具の筐体に収容される第2撮像装置と、を含み、
前記判定部は、一方の灯具が点灯し他方の灯具が消灯している状態で消灯している灯具の筐体に収容される撮像装置が撮像した配光パターンと、前記基準パターンとを比較して、点灯している灯具の前記光出射面への異物の付着を判定する請求項2に記載の車両用灯具システム。 - 前記車両用灯具システムは、前記光出射面を洗浄する洗浄装置を備え、
前記異物判定装置は、前記判定部の判定結果に基づいて前記洗浄装置を制御する洗浄制御部を有する請求項1乃至4のいずれか1項に記載の車両用灯具システム。 - 前記車両用灯具システムは、前記光出射面への異物の付着を車両の搭乗者に報知する報知装置を備え、
前記異物判定装置は、前記判定部の判定結果に基づいて前記報知装置を制御する報知制御部を有する請求項1乃至5のいずれか1項に記載の車両用灯具システム。 - 車両の前方領域に光を出射して所定の配光パターンを形成可能な車両用灯具が、光出射面に異物が付着していない状態で前記前方領域に形成する配光パターンを、基準パターンとして記憶する記憶部と、
前記前方領域を撮像する撮像装置が撮像した配光パターンと前記基準パターンとを比較して、前記光出射面への異物の付着を判定する判定部と、
を備える異物判定装置。 - 車両の前方領域に光を出射して所定の配光パターンを形成可能な車両用灯具が、光出射面に異物が付着していない状態で前記前方領域に形成する配光パターンと、前記前方領域を撮像する撮像装置が撮像した配光パターンとを比較して、前記光出射面への異物の付着を判定することを含む異物判定方法。
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