CN107380053A - Vehicle-mounted lighting device, night vision system, vehicle and its night vision illumination control method - Google Patents

Vehicle-mounted lighting device, night vision system, vehicle and its night vision illumination control method Download PDF

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Publication number
CN107380053A
CN107380053A CN201610329168.6A CN201610329168A CN107380053A CN 107380053 A CN107380053 A CN 107380053A CN 201610329168 A CN201610329168 A CN 201610329168A CN 107380053 A CN107380053 A CN 107380053A
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vehicle
mrow
visibility
lighting
illumination
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CN107380053B (en
Inventor
邱欣周
刘国宁
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BYD Semiconductor Co Ltd
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BYD Co Ltd
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/804—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for lane monitoring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
    • B60R2300/8053—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for bad weather conditions or night vision

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

The invention discloses a kind of vehicle-mounted lighting device, night vision system, vehicle and its night vision illumination control method, the vehicle-mounted lighting device includes：Lighting module；Visibility detection module, for detecting the visibility of vehicle current driving environment；Control module, control module is connected with visibility detection module and lighting module respectively, control module is used for the lighting power that lighting module is calculated according to the visibility of vehicle current driving environment, and control lighting module to be illuminated with lighting power, so that the filming apparatus of vehicle obtains the road conditions image information in the range of pre-determined distance.The vehicle-mounted lighting device of the embodiment of the present invention, lighting power is controlled according to the visibility of vehicle current driving environment, so that filming apparatus can obtain the road conditions image information in the range of pre-determined distance under different visibility, so that the transparent effect of the night vision system of vehicle is kept under different visibility, the security of vehicle is improved, improves driving experience.

Description

Vehicle-mounted lighting device, night vision system, vehicle and its night vision illumination control method
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of vehicle-mounted lighting device, night vision system, vehicle and its night vision Illumination control method.
Background technology
Attention to health and safety trip so that people increasingly pay close attention to traffic safety.According to countries in the world highway Running situation statistics are shown, in all bad weather conditions, low visibility endangers traffic safety maximum.Pacifying The field such as anti-monitoring, automobile, cross-country, the near-infrared night vision system in correlation technique, which turns into, to be monitored and increase sighting distance has efficacious prescriptions Formula, night vision illumination are the essential composition parts of near-infrared night vision system, wherein, laser due to its high brightness and collimation and It is increasingly being applied to the illumination of near-infrared night vision system.But the near-infrared night vision system in correlation technique, in different meteorologies Under the conditions of its lighting control mode it is relatively simple, illuminating effect is bad, therefore has much room for improvement.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention One purpose is to propose a kind of vehicle-mounted lighting device, the vehicle-mounted lighting device, according to the visibility of vehicle current driving environment Lighting power is controlled, so that the filming apparatus of vehicle can obtain the road conditions image in the range of pre-determined distance under different visibility Information, so that keeping the transparent effect of the night vision system of vehicle under different visibility, the security of vehicle is improved, is carried Driving experience is risen.
Second object of the present invention is to propose a kind of night vision system.
Third object of the present invention is to propose a kind of vehicle.
Fourth object of the present invention is the night vision illumination control method for proposing a kind of vehicle.
To achieve these goals, the vehicle-mounted lighting device of first aspect present invention embodiment, including：Lighting module；Energy Degree of opinion detection module, for detecting the visibility of the vehicle current driving environment；Control module, the control module respectively with The visibility detection module is connected with the lighting module, and the control module is used for according to the vehicle current driving environment Visibility calculate the lighting power of the lighting module, and control the lighting module to be illuminated with the lighting power, So that the filming apparatus of the vehicle obtains the road conditions image information in the range of pre-determined distance.
Vehicle-mounted lighting device according to embodiments of the present invention, vehicle current driving environment is detected by visibility detection module Visibility, control module then calculates the lighting power of lighting module according to the visibility of vehicle current driving environment, and controls Lighting module is illuminated with the lighting power calculated, so that filming apparatus can obtain pre-determined distance under different visibility In the range of road conditions image information so that under different visibility keep vehicle night vision system transparent effect, lifting The security of vehicle, improves driving experience.
To achieve these goals, the night vision system of second aspect of the present invention embodiment, including first aspect present invention are real Apply the vehicle-mounted lighting device of example；Filming apparatus, for obtaining the road conditions image information in the range of pre-determined distance；And display dress Put, for showing the road conditions image information.
Night vision system according to embodiments of the present invention, vehicle-mounted lighting device are defeated according to the visibility of vehicle current driving environment Go out corresponding lighting power so that filming apparatus can obtain the road conditions image letter in the range of pre-determined distance under different visibility Breath, display device is then shown the road conditions image information that filming apparatus obtains, so that night vision system is in different visibility Under can keep identical transparent effect.
To achieve these goals, the vehicle of third aspect present invention embodiment, including second aspect of the present invention embodiment Night vision system.
Vehicle according to embodiments of the present invention, by the night vision system, it is saturating under different visibility can to obtain identical Depending on effect, so as to improve driving experience, improve security.
To achieve these goals, the night vision illumination control method of the vehicle of fourth aspect present invention embodiment, including with Lower step：Detect the visibility of the vehicle current driving environment；According to obtaining the visibility of the vehicle running environment The lighting power of vehicle；The lighting module of the vehicle is controlled to be illuminated with the lighting power, so that the bat of the vehicle The road conditions image information taken the photograph in the range of device acquisition pre-determined distance.
The night vision illumination control method of vehicle according to embodiments of the present invention, detection vehicle current driving environment can be shown in Degree, and according to the lighting power of the visibility of vehicle current driving environment calculating lighting module, and control lighting module is in terms of The lighting power calculated is illuminated, so that the filming apparatus of vehicle can be obtained in the range of pre-determined distance under different visibility Road conditions image information so that under different visibility keep vehicle night vision system transparent effect, improve vehicle Security, improve driving experience.
Brief description of the drawings
Fig. 1 is the schematic diagram in night vision system effective lighting region in visibility good in correlation technique；
Fig. 2 is the schematic diagram in night vision system effective lighting region when visibility is poor in correlation technique；
Fig. 3 is the block diagram of vehicle-mounted lighting device according to an embodiment of the invention；
Fig. 4 is the schematic diagram according to the night vision system of a specific embodiment of the invention；
Fig. 5 is the schematic diagram according to the night vision system of another specific embodiment of the invention；
Fig. 6 is the block diagram of night vision system according to an embodiment of the invention；
Fig. 7 is the flow chart of the night vision illumination control method of vehicle according to an embodiment of the invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
Near-infrared night vision system in correlation technique, generally use near-infrared laser are illuminated, its lighting control mode It is relatively simple, for example, its illumination intensity is generally fixing intensity.The weather condition that vehicle runs into when travelling is more complicated, works as car When travelling on different bad weather conditions, this lighting control mode can cause the performance of near-infrared night vision system occur compared with Big difference.In all bad weather conditions, harm of the visibility for traffic safety is maximum, wherein, visibility refers to The luminous flux of 2700K black body radiation, weaken the path length passed through to initial value 5% in an atmosphere.
Near-infrared night vision system in correlation technique is still applied in the case of visibility good, but when visibility is poor When, for example thick fog or dust and sand weather, the perspectivity of night vision system be remarkably decreased, " perspective " effect is had a greatly reduced quality.Especially thick fog Under state, poor visibility, air humidity is big, and drops of water fall down causes wet road surface on road surface, and road-adhesion coefficient reduces.At night Between under the conditions of equal speed, in the case of two kinds of visibility good and poor visibility, the operating distance of night vision system is to make a world of difference (as depicted in figs. 1 and 2), effective lighting region substantially reduces in the case of poor visibility, and the now braking of vehicle away from From also increasing, the driving experience of vehicle is reduced.
In order to solve the above problems, the present invention proposes a kind of vehicle-mounted lighting device, night vision system, vehicle and vehicle Night vision illumination control method.
Vehicle-mounted lighting device, night vision system, vehicle and its night vision illumination of the embodiment of the present invention are described below in conjunction with the accompanying drawings Control method.
Fig. 3 is the block diagram of vehicle-mounted lighting device according to an embodiment of the invention.As shown in figure 3, the present invention is implemented The vehicle-mounted lighting device 100 of example, including：Lighting module 10, visibility detection module 20 and control module 30.
In one embodiment of the invention, lighting module 10 is near-infrared semiconductor laser lamp.
Specifically, near-infrared semiconductor laser lamp sends near-infrared laser, thinks car lighting.
Visibility detection module 20 is used for the visibility for detecting vehicle current driving environment.
Specifically, visibility detection module 20 can be visibility detector, for detecting vehicle current driving environment Visibility, and the visibility detected is supplied to control module 3030.
Control module 30 is connected with visibility detection module 20 and lighting module 10 respectively, and control module 30 is used for according to car The visibility of current driving environment calculates the lighting power of lighting module 10, and controls lighting module 10 to be carried out with lighting power Illumination, so that the filming apparatus 200 of vehicle obtains the road conditions image information in the range of pre-determined distance.
Specifically, the visibility that control module 30 detects according to visibility detection module 20 calculates the photograph of lighting module 10 Bright power, and the lighting power for controlling lighting module 10 to calculate is illuminated.Wherein, vehicle-mounted lighting device 100, shooting dress The night vision system 1000 of 200 and the composition vehicle of display device 300 is put, what control module 30 controlled lighting module 10 to calculate Lighting power is illuminated, to cause filming apparatus 200 to shoot the road conditions image information of vehicle and be provided by display device 300 To driver, so that when vehicle is in the environment of different visibility, night vision system 1000 can provide together for driver The image of sample distance range, for example, under different visibility, it is visible to be attained by target at 200m.
In one embodiment of the invention, control module 30 is used for：Acquisition visibility is more than corresponding during predetermined threshold value Actual scene illumination E'0, and atmospheric spectral transmittance τ is obtained according to the visibility of vehicle current driving environment1, and according to energy Degree of opinion is more than corresponding actual scene illumination E' during predetermined threshold value0With atmospheric spectral transmittance τ1Obtain corresponding to lighting module 10 Equivalent illumination E, and the equivalent illumination E and area S in target illumination face calculates lighting module according to corresponding to lighting module 10 10 lighting power.
Introduce in detail below.
First, Koschmieder (section applies a meter DS) visibility equation is：
Wherein, R represents visibility, and ε represents contrast threshold, and L represents perspective thickness, τ1Represent atmospheric spectral transmittance.
So, it a meter DS visibility equation is applied by section can obtain atmospheric spectral transmittance and be：
Fig. 4 is the schematic diagram according to the night vision system of a specific embodiment of the invention.As shown in figure 4, in low visibility Under situation, the laser that the complexity of propagation in atmosphere to propagate wherein produces scattering, absorption etc. influence, so that laser Lighting power is decayed with transmission range, then, it is visible to reach the target of same distance, in visibility under different conditions, The lighting power needed is different.In a practical situation, according to illumination field of view size and the Spectral matching coefficient of filming apparatus To determine, the minimal illumination E in target illumination face1Calculated by below equation：
Wherein, E0Expression standard scene illumination, τ1Represent atmospheric spectral transmittance, τ2Represent that the spectrum of shooting die device is saturating Rate is crossed, ρ represents the reflectivity of illuminated target,The relative aperture of camera lens in filming apparatus is represented, c represents actual contrast.
Specifically, for empirically, it is considered that the photosensitive illumination of reality of filming apparatus (for example, ccd video camera) is (i.e. E1) 10 times of minimum photosensitive illumination that need to reach ccd video camera sign just have preferable image quality, then, it is possible to E is calculated according to formula (3)0, and the spectral responsivity δ of light wave is sent according to ccd video camera to lighting module 10, it can obtain The actual scene illumination corresponding to (visibility is more than predetermined threshold value, for example, predetermined threshold value is 2000 meters) in visibility good E'0, wherein, calculate E' according to following formula0：
E'0=E0/ δ, (4)
Wherein, δ represents that filming apparatus sends the spectral responsivity of light wave to lighting module 10.
Further, when visibility is R, the equivalent illumination E according to corresponding to following formula calculate lighting module 10：
The equivalent illumination E according to corresponding to above-mentioned formula can calculate lighting module 10 of control module 30：
Wherein, E'0Corresponding actual scene illumination when being more than predetermined threshold value for visibility, τ1For atmospheric spectral transmittance, E For equivalent illumination corresponding to lighting module 10, R is the visibility of vehicle current driving environment, and ε is contrast threshold, and L is Apparent thickness.
Further, actual need can be obtained to the spectral responsivity of light wave according to luminous flux conversion formula and filming apparatus The radiant energy flux asked
So as to draw the lighting power of lighting module 10：
Wherein, P0The lighting power of lighting module 10 is represented, E represents equivalent illumination corresponding to lighting module 10, and S is represented The area in target illumination face, δ represent the light wave spectral responsivity of filming apparatus, KmFor the filming apparatus under photopic conditions Absolute spectral luminous efficiency, k are the optical coupling rate of the lighting module 10.
So, summary formula (6) and (8) understand that control module 30 calculates lighting module 10 according to following formula Lighting power：
Wherein, P0For the lighting power of lighting module 10, R is the visibility of vehicle current driving environment, and ε is contrast threshold Value, L for perspective thickness, S be target illumination face area, δ be filming apparatus light wave spectral responsivity, KmFor photopic conditions The absolute spectral luminous efficiency of lower filming apparatus, k are the optical coupling rate of lighting module 10.
In one embodiment of the invention, control module 30 is additionally operable to：Controlled and illuminated according to the angle of visual field a of filming apparatus The light angle b of module 10, wherein, 0.7*a ＜ b ＜ a.
For example, as shown in figure 5, the angle of visual field of filming apparatus is 4 °, the light angle of lighting module 10 is 3 °, can be improved The validity of illumination, while ensure well to observe the image-region being absorbed in.
The vehicle-mounted lighting device of the embodiment of the present invention is described with reference to a specific example.
As shown in figure 5, ccd video camera of the filming apparatus 200 using black and white, its angle of visual field are 4 °, its photosensitive size is 8.47mm*6.35mm minimum photosensitive illumination is 0.0003lx, lens focus 120mm, relative aperture isCamera lens Spectral transmittance τ2=0.8, reflectivity ρ=0.5 of illuminated target, actual contrast c=0.3；Lighting module 10 is near red Outer semiconductor laser lamp, its light angle are 3 °, and the wavelength for sending light is 808nm.
Empirically, it is considered that photosensitive illumination (the i.e. E of reality of filming apparatus (for example, ccd video camera)1) need to reach 10 times of the minimum photosensitive illumination of ccd video camera sign just have preferable image quality, (the example in the case of visibility good Such as, visibility is more than 2000 meters), corresponding actual scene illumination E'0, atmospheric spectral transmittance τ1For 0.8, can now calculate To the minimum illuminance requirement in the target illumination face under normal illumination.
By formula (3)It can obtain：E0=0.6lx.Again because shooting fills Put to 808nm light wave spectral responsivities δ=0.4, therefore in visibility good, actual scene illumination E'0=0.6/0.4= 1.5lx。
It can be calculated according to the size (photosensitive width 6.35mm and lens focus 120mm) of CCD sensitive chips in filming apparatus The scenery radius that can be imaged when going out distance L=200m is：
So, the area that target illumination face can be obtained according to scenery radius is：
S=π × r2=87.9m2。
The absolute spectral luminous efficiency K of video camera under photopic conditions known to againmFor 683lm/w, the optocoupler of lighting module 10 Conjunction rate k=0.85, contrast threshold 0.02, then the power output required for can obtaining semiconductor laser (illuminates Power)：
It can be drawn under different visibility according to above formula, the vehicle-mounted photograph of the embodiment of the present invention visible to reach 200m targets The lighting power of lighting module 10, see the table below shown in 1 in bright device.
Table 1
So, control module 30 can calculate lighting module with the visibility that is detected according to visibility detection module 20 10 lighting power, so as to reach the purpose adaptively illuminated, so that under different visibility, the perspective of night vision system can be kept Effect., can be by the adjust automatically of control module 30 in the case of low visibility by the vehicle-mounted lighting device of the embodiment of the present invention The lighting power of lighting module 10, realize under DIFFERENT METEOROLOGICAL CONDITIONS, near-infrared night vision laser lighting still can reach same Distance, that is, improve the operating distance of the night vision system under low visibility, be beneficial to improve big greasy weather traffic safety, can The chain of rings is taken precautions against to knock into the back, collide the fogday traffic accidents such as front disabled vehicle.
The vehicle-mounted lighting device of the embodiment of the present invention, the energy of vehicle current driving environment is detected by visibility detection module Degree of opinion, control module then calculate the lighting power of lighting module according to the visibility of vehicle current driving environment, and control illumination Module is illuminated with the lighting power calculated, so that filming apparatus can obtain pre-determined distance scope under different visibility Interior road conditions image information, so that keeping the transparent effect of the night vision system of vehicle under different visibility, improve car Security, improve driving experience.
In order to realize above-described embodiment, the invention also provides a kind of night vision system.
Fig. 6 is the block diagram of night vision system according to an embodiment of the invention.As shown in fig. 6, the present invention is implemented The night vision system 1000 of example includes vehicle-mounted lighting device 100, filming apparatus 200 and display device 300.
Wherein, vehicle-mounted lighting device 100 is described in detail in embodiment above, will not be repeated here.
Filming apparatus 200 is used to obtain the road conditions image information in the range of pre-determined distance.
Display device 300 is used for the road conditions image information for showing that filming apparatus 200 obtains.
Specifically, vehicle-mounted lighting device 100 adjusts the lighting power of lighting module according to the size of visibility, so that shooting Device 200 all obtains the road conditions image information in the range of pre-determined distance under different visibility, and display device 300 then fills shooting Put the road conditions image information in the range of the pre-determined distance of 200 shootings to be shown, so that driver uses.
The night vision system of the embodiment of the present invention, vehicle-mounted lighting device export phase according to the visibility of vehicle current driving environment The lighting power answered so that filming apparatus can obtain the road conditions image information in the range of pre-determined distance under different visibility, Display device then by filming apparatus obtain road conditions image information shown so that night vision system under different visibility all Identical transparent effect can be kept.
In order to realize above-described embodiment, the invention also provides a kind of vehicle.The vehicle includes the night of the embodiment of the present invention Viewing system.
The vehicle of the embodiment of the present invention, by the night vision system, identical perspective effect can be obtained under different visibility Fruit, so as to improve driving experience, improve security.
In order to realize above-described embodiment, the invention also provides a kind of night vision illumination control method of vehicle.
Fig. 7 is the flow chart of the night vision illumination control method of vehicle according to an embodiment of the invention.As shown in fig. 7, The night vision illumination control method of the vehicle of the embodiment of the present invention, comprises the following steps：
S1, detect the visibility of vehicle current driving environment.
For example, the visibility of vehicle current driving environment is detected by visibility detector.
S2, the lighting power of vehicle is obtained according to the visibility of vehicle running environment.
In one embodiment of the invention, the lighting power of vehicle, bag are obtained according to the visibility of vehicle running environment Include：Obtain visibility and be more than corresponding actual scene illumination during predetermined threshold value；Obtained according to the visibility of vehicle current driving environment Take atmospheric spectral transmittance；Corresponding actual scene illumination and atmospheric spectral transmittance obtain when being more than predetermined threshold value according to visibility Take equivalent illumination corresponding to lighting module；And the area in equivalent illumination and target illumination face according to corresponding to lighting module Calculate the lighting power of lighting module.
In one embodiment of the invention, the equivalent illumination according to corresponding to formula (6) calculates lighting module.
In one embodiment of the invention, the lighting power of lighting module is calculated according to formula (9).
S3, control the lighting module of vehicle to be illuminated with lighting power so that the filming apparatus of vehicle obtain it is default away from Road conditions image information from the range of.
In one embodiment of the invention, lighting module is near-infrared semiconductor laser lamp.
Specifically, the visibility detected according to visibility detector calculates the lighting power of lighting module, and controls photograph Bright module is illuminated with the lighting power calculated.Wherein, vehicle-mounted lighting device, filming apparatus and display device form car Night vision system, control lighting module is illuminated with the lighting power calculated, with cause filming apparatus shooting default away from The road conditions image information of vehicle and driver is supplied to by display device from the range of, can seen so that vehicle is in different During the environment of degree, night vision system can provide the image of same distance range for driver, for example, under different visibility, It is visible to be attained by target at 200m.
In one embodiment of the invention, the night vision illumination control method of vehicle, in addition to：According to regarding for filming apparatus Rink corner a controls the light angle b of lighting module, wherein, 0.7*a ＜ b ＜ a.The validity of illumination can be so improved, is protected simultaneously Card well observes the image-region being absorbed in.
It should be noted that part not deployed in the night vision illumination control method of the vehicle of the embodiment of the present invention is (such as public affairs Formula derivation, citing etc.), the corresponding part of the vehicle-mounted lighting device of preceding embodiment is referred to, is no longer developed in details herein.
The night vision illumination control method of the vehicle of the embodiment of the present invention, the visibility of vehicle current driving environment is detected, and The lighting power of lighting module, and control lighting module is calculated according to the visibility of vehicle current driving environment to calculate Lighting power is illuminated, so that the filming apparatus of vehicle can obtain the road conditions in the range of pre-determined distance under different visibility Image information, so that keeping the transparent effect of the night vision system of vehicle under different visibility, improve the safety of vehicle Property, improve driving experience.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc. Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects Connect or electrically connect；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements The connection in portion or the interaction relationship of two elements, limited unless otherwise clear and definite.For one of ordinary skill in the art For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changed, replacing and modification.

Claims (13)

  1. A kind of 1. vehicle-mounted lighting device, it is characterised in that including：
    Lighting module；
    Visibility detection module, for detecting the visibility of the vehicle current driving environment；
    Control module, the control module are connected with the visibility detection module and the lighting module respectively, the control Module is used for the lighting power that the lighting module is calculated according to the visibility of the vehicle current driving environment, and described in control Lighting module is illuminated with the lighting power, so that the filming apparatus of the vehicle obtains the road conditions in the range of pre-determined distance Image information.
  2. 2. vehicle-mounted lighting device as claimed in claim 1, it is characterised in that the control module is used for：
    Obtain visibility and be more than corresponding actual scene illumination E' during predetermined threshold value0, and according to the vehicle current driving environment Visibility obtains the atmospheric spectral transmittance τ1, and corresponding actual scenery when being more than predetermined threshold value according to the visibility Illumination E'0With the atmospheric spectral transmittance τ1Equivalent illumination E corresponding to the lighting module is obtained, and according to the illumination Equivalent illumination E corresponding to the module and area S in the target illumination face calculates the lighting power of the lighting module.
  3. 3. vehicle-mounted lighting device as claimed in claim 2, it is characterised in that the control module calculates institute according to following formula State equivalent illumination corresponding to lighting module：
    <mrow> <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mrow> <mi>E</mi> <mo>=</mo> <msubsup> <mi>E</mi> <mn>0</mn> <mo>&amp;prime;</mo> </msubsup> <mo>/</mo> <msubsup> <mi>&amp;tau;</mi> <mn>1</mn> <mn>2</mn> </msubsup> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>&amp;tau;</mi> <mn>1</mn> </msub> <mo>=</mo> <msup> <mi>e</mi> <mfrac> <mrow> <mi>l</mi> <mi>n</mi> <mi>&amp;epsiv;</mi> <mo>&amp;times;</mo> <mi>L</mi> </mrow> <mi>R</mi> </mfrac> </msup> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>,</mo> </mrow>
    Wherein, E'0Corresponding actual scene illumination when being more than predetermined threshold value for the visibility, τ1Passed through for the atmospheric optical spec Rate, E are equivalent illumination corresponding to the lighting module, and R is the visibility of the vehicle current driving environment, and ε is contrast Threshold value, L are perspective thickness.
  4. 4. vehicle-mounted lighting device as claimed in claim 3, it is characterised in that the control module calculates institute according to following formula State the lighting power of lighting module：
    <mrow> <msub> <mi>P</mi> <mn>0</mn> </msub> <mo>=</mo> <mfrac> <mrow> <msubsup> <mi>E</mi> <mn>0</mn> <mo>&amp;prime;</mo> </msubsup> <mo>&amp;times;</mo> <msup> <mi>e</mi> <mrow> <mo>-</mo> <mn>2</mn> <mfrac> <mrow> <mi>ln</mi> <mi>&amp;epsiv;</mi> <mo>&amp;times;</mo> <mi>L</mi> </mrow> <mi>R</mi> </mfrac> </mrow> </msup> <mo>&amp;times;</mo> <mi>S</mi> </mrow> <mrow> <msup> <mi>&amp;delta;</mi> <mn>2</mn> </msup> <mo>&amp;times;</mo> <msub> <mi>K</mi> <mi>m</mi> </msub> <mo>&amp;times;</mo> <mi>k</mi> </mrow> </mfrac> <mo>,</mo> </mrow>
    Wherein, P0For the lighting power of the lighting module, R is the visibility of the vehicle current driving environment, and ε is contrast Threshold value, L for perspective thickness, S be the target illumination face area, δ be the filming apparatus light wave spectral responsivity, KmFor The absolute spectral luminous efficiency of the filming apparatus under photopic conditions, k are the optical coupling rate of the lighting module.
  5. 5. vehicle-mounted lighting device as claimed in claim 1, it is characterised in that the control module is additionally operable to：
    The light angle b of the lighting module is controlled according to the angle of visual field a of the filming apparatus, wherein, 0.7*a ＜ b ＜ a.
  6. 6. vehicle-mounted lighting device as claimed in claim 1, it is characterised in that the lighting module is near-infrared semiconductor laser Lamp.
  7. A kind of 7. night vision system, it is characterised in that including：
    Such as the vehicle-mounted lighting device any one of claim 1-6；
    Filming apparatus, for obtaining the road conditions image information in the range of pre-determined distance；And
    Display device, for showing the road conditions image information.
  8. 8. a kind of vehicle, it is characterised in that including night vision system as claimed in claim 7.
  9. 9. the night vision illumination control method of a kind of vehicle, it is characterised in that comprise the following steps：
    Detect the visibility of the vehicle current driving environment；
    The lighting power of the vehicle is obtained according to the visibility of the vehicle running environment；
    The lighting module of the vehicle is controlled to be illuminated with the lighting power, so that the filming apparatus of the vehicle obtains in advance If the road conditions image information in distance range.
  10. 10. the night vision illumination control method of vehicle as claimed in claim 9, it is characterised in that described according to the vehicle row The visibility for sailing environment obtains the lighting power of the vehicle, including：
    Obtain visibility and be more than corresponding actual scene illumination during predetermined threshold value；
    The atmospheric spectral transmittance is obtained according to the visibility of the vehicle current driving environment；
    Corresponding actual scene illumination and the atmospheric spectral transmittance obtain institute when being more than predetermined threshold value according to the visibility State equivalent illumination corresponding to lighting module；And
    The lighting module according to the areal calculation in equivalent illumination corresponding to the lighting module and the target illumination face Lighting power.
  11. 11. the night vision illumination control method of vehicle as claimed in claim 10, it is characterised in that calculate institute according to following formula State equivalent illumination corresponding to lighting module：
    <mrow> <mfenced open = "{" close = ""> <mtable> <mtr> <mtd> <mrow> <mi>E</mi> <mo>=</mo> <msubsup> <mi>E</mi> <mn>0</mn> <mo>&amp;prime;</mo> </msubsup> <mo>/</mo> <msubsup> <mi>&amp;tau;</mi> <mn>1</mn> <mn>2</mn> </msubsup> </mrow> </mtd> </mtr> <mtr> <mtd> <mrow> <msub> <mi>&amp;tau;</mi> <mn>1</mn> </msub> <mo>=</mo> <msup> <mi>e</mi> <mfrac> <mrow> <mi>l</mi> <mi>n</mi> <mi>&amp;epsiv;</mi> <mo>&amp;times;</mo> <mi>L</mi> </mrow> <mi>R</mi> </mfrac> </msup> </mrow> </mtd> </mtr> </mtable> </mfenced> <mo>,</mo> </mrow>
    Wherein, E'0Corresponding actual scene illumination when being more than predetermined threshold value for the visibility, τ1For atmospheric spectral transmittance, E For equivalent illumination corresponding to the lighting module, R is the visibility of the vehicle current driving environment, and ε is contrast threshold, L is perspective thickness.
  12. 12. the night vision illumination control method of vehicle as claimed in claim 11, it is characterised in that calculated and stated according to following formula The lighting power of lighting module：
    <mrow> <msub> <mi>P</mi> <mn>0</mn> </msub> <mo>=</mo> <mfrac> <mrow> <msubsup> <mi>E</mi> <mn>0</mn> <mo>&amp;prime;</mo> </msubsup> <mo>&amp;times;</mo> <msup> <mi>e</mi> <mrow> <mo>-</mo> <mn>2</mn> <mfrac> <mrow> <mi>ln</mi> <mi>&amp;epsiv;</mi> <mo>&amp;times;</mo> <mi>L</mi> </mrow> <mi>R</mi> </mfrac> </mrow> </msup> <mo>&amp;times;</mo> <mi>S</mi> </mrow> <mrow> <msup> <mi>&amp;delta;</mi> <mn>2</mn> </msup> <mo>&amp;times;</mo> <msub> <mi>K</mi> <mi>m</mi> </msub> <mo>&amp;times;</mo> <mi>k</mi> </mrow> </mfrac> <mo>,</mo> </mrow>
    Wherein, P0For the lighting power of the lighting module, R is the visibility of the vehicle current driving environment, and ε is contrast Threshold value, L for perspective thickness, S be the target illumination face area, δ be the filming apparatus light wave spectral responsivity, KmFor The absolute spectral luminous efficiency of the filming apparatus under photopic conditions, k are the optical coupling rate of the lighting module.
  13. 13. the night vision illumination control method of vehicle as claimed in claim 9, it is characterised in that also include：
    The light angle b of the lighting module is controlled according to the angle of visual field a of the filming apparatus, wherein, 0.7*a ＜ b ＜ a.
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CN114585133A (en) * 2020-12-01 2022-06-03 常州星宇车灯股份有限公司 Control system and method for multi-light source headlamp

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CN204164893U (en) * 2014-09-22 2015-02-18 山东华光光电子有限公司 A kind of car and boat high power laser illumination module

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CN103747980A (en) * 2011-08-23 2014-04-23 罗伯特·博世有限公司 Method and device for controlling headlamp of vehicle
CN204124035U (en) * 2014-08-21 2015-01-28 成都易默生汽车技术有限公司 A kind of Der Scheinwerfer mit FernlichtAbblendlichtStandlicht Contrast tuned imaging system
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CN114585133A (en) * 2020-12-01 2022-06-03 常州星宇车灯股份有限公司 Control system and method for multi-light source headlamp

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