CN113761655A - Light supplementing device for rear camera of automobile and light distribution optimization method - Google Patents
Light supplementing device for rear camera of automobile and light distribution optimization method Download PDFInfo
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- CN113761655A CN113761655A CN202110969141.4A CN202110969141A CN113761655A CN 113761655 A CN113761655 A CN 113761655A CN 202110969141 A CN202110969141 A CN 202110969141A CN 113761655 A CN113761655 A CN 113761655A
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- 238000005457 optimization Methods 0.000 title claims abstract description 19
- 238000009826 distribution Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000001502 supplementing effect Effects 0.000 title abstract description 21
- 239000013589 supplement Substances 0.000 claims abstract description 48
- 238000005286 illumination Methods 0.000 claims description 12
- 238000011161 development Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B15/00—Special procedures for taking photographs; Apparatus therefor
- G03B15/02—Illuminating scene
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
Abstract
The invention discloses a light supplementing device for a rear camera of an automobile and a light distribution optimization method, wherein the light supplementing device comprises a light supplementing lamp, the light supplementing lamp is a reversing lamp or a combination of the reversing lamp and a license plate lamp, the light of the light supplementing lamp is enabled to illuminate the irradiation range of the rear camera through light distribution optimization, the input end of the light supplementing lamp is connected with the output end of a vehicle controller, the vehicle controller is used for receiving a gear signal of the vehicle, and when the gear signal of the vehicle is reverse gear, the vehicle controller drives the light supplementing lamp to be turned on to supplement light for the rear camera. The existing resources of the whole vehicle can be effectively utilized, and the problem of insufficient ambient light during reversing is effectively solved.
Description
Technical Field
The invention relates to the technical field of automobile reversing assistance, in particular to an automobile rear camera light supplementing device and a light distribution optimization method.
Background
Along with the continuous development of economy, the living standard of people is gradually improved, and the automobile is also popularized and developed in the life of people, and the quantity of reserves is also steadily increased, so that the automobile becomes a common vehicle for people to go out, and the convenience for people to go out is improved. The automobile reserves are rapidly increased, so that the urban road is gradually blocked, the problem of parking space shortage is gradually highlighted, and when parking, the automobile is limited by objective conditions such as view shielding and narrow parking space, so that collision accidents are easy to happen, and unnecessary loss is brought. Especially, when parking in a low-light environment, due to insufficient light and large visual field blind area, the environment behind the automobile when the automobile is backed cannot be accurately judged, so that collision or scraping is very easy to occur during parking.
In order to solve the problem of the blind area of the field of vision when the automobile backs a car, a camera is installed behind the automobile at present, and an environment image behind the automobile shot by the camera behind the automobile is displayed on a multimedia display screen in the automobile or sent to an automatic parking system for processing, so that the camera behind the automobile is very popular. However, the general rear camera has only a camera shooting function and does not have a light supplementing function for the rear camera, so that light can not be supplemented for the rear camera when the ambient light is insufficient, the image of the rear environment shot by the camera is blurred, the rear environment of the automobile when the automobile is backed by the driver or an automatic parking system cannot be judged, the automobile cannot effectively avoid dangers, the automobile is scratched, damages are caused to the automobile, and economic losses are caused.
CN110351491A discloses a light supplement method, device and system under low-light environment, which first determines whether the driving environment is in low-light state; when the driving environment is determined to be in the low-light state, the light supplement lamp corresponding to the at least one all-round-looking camera is lightened so as to supplement light to the driving environment, and the light supplement lamp system is composed of an independent light supplement lamp and a control system. The light supplement lamp corresponding to the all-round-looking camera can supplement light to the driving environment, so that the images shot by the all-round-looking camera can accurately record the driving environment, the driving environment information such as lanes, parking spaces and obstacles can be accurately obtained according to the shot images when a driver or a vehicle automatically drives, accurate counter measures can be taken according to the driving environment information when the driver or the vehicle automatically drives, the occurrence of vehicle accidents caused by the fact that the all-round-looking camera cannot accurately obtain the driving environment information in the low-lighting environment is avoided, the influence of the low-lighting environment on the safety of the vehicle can be effectively overcome, and the safety of the vehicle is improved. According to the camera light supplement scheme, the light supplement lamp system comprises the optical sensor, the light supplement lamp, the corresponding controller and the like, the control method of the light supplement lamp system is complex, the separate light supplement lamp and the corresponding controller and other parts need to be developed, corresponding performance matching is conducted on software, the development matching period is long, and hardware development and software development investment are large. According to the scheme in the patent, an independent camera light supplement lamp and an independent camera light supplement system are needed to be added to supplement light when the camera is used for shooting, development cost and production cost are increased, and control over the cost of the whole vehicle is not facilitated.
Disclosure of Invention
The invention aims to provide a light supplementing device for a rear camera of an automobile and a light distribution optimization method, which can effectively utilize the existing resources of the whole automobile and effectively solve the problem of insufficient ambient light during reversing.
The light supplementing device for the rear camera of the automobile comprises a light supplementing lamp, wherein the light supplementing lamp is a reversing lamp or a combination of the reversing lamp and a license plate lamp, the light supplementing lamp illuminates the rear camera within an illumination range through light distribution optimization, the input end of the light supplementing lamp is connected with the output end of a vehicle controller, the vehicle controller is used for receiving a gear signal of the vehicle, and when the gear signal of the vehicle is reverse gear, the vehicle controller drives the light supplementing lamp to be turned on to supplement light for the rear camera.
Furthermore, the input end of the whole vehicle controller is connected with the output end of the gearbox controller or the engine controller, the input end of the gearbox controller or the engine controller is connected with the output end of the gear shifting mechanism, and a whole vehicle gear signal is sent out through the gearbox controller or the engine controller.
A light distribution optimization method of a light supplement device of a rear camera of an automobile comprises the following steps:
s1, arranging model data of a rear camera and a light supplement lamp in a finished automobile model in three-dimensional modeling software, wherein the rear camera and the light supplement lamp meet modeling requirements and finished automobile arrangement requirements;
s2, importing the arrangement data of the supplementary lighting lamp in the S1 into light distribution software, simulating the road illumination by adopting the light distribution software, dividing grids on an irradiated surface behind the vehicle and recording the brightness values on the grid points;
s3, determining the target brightness value of each point on the grid point according to the shooting range of the rear camera and the brightness value on the grid point recorded in S2;
s4, optimizing the light distribution of the light supplement lamp on the basis of S2, enabling the brightness values of the points on the grid of the light within the range of the grid irradiated by the light supplement lamp to be as large as possible under the premise that the light supplement lamp meets the light distribution required by corresponding regulations, enabling the brightness within the range of the grid to be uniform or to be uniformly changed, and recording the brightness values of the points on the grid after optimization;
s5, comparing the brightness value of each point on the grid obtained in S4 with the target brightness value in S3, if the brightness value of each point on the grid obtained in S4 is not less than the target brightness value, the optimization is completed, and if the brightness value of each point on the grid obtained in S4 is less than the target brightness value, S3 and S4 are carried out again.
The invention depends on the existing hardware, adopts the combination of the reversing light or the reversing light and the license plate light as the light supplement light of the rear camera to supplement light, improves the illumination of the camera environment of the rear camera in the low-illumination environment of the automobile, ensures that the image shot by the rear camera can accurately feed back the environment after the automobile, is convenient for a driver or the automobile to take accurate counter measures according to the driving environment information when the automobile parks automatically, increases the driving safety, does not correspondingly increase the production cost because of no newly added parts, has high practical value and is beneficial to popularization and use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic flow chart of a light distribution optimization method of the light supplement device for the rear camera of the automobile according to the present invention;
fig. 3 is a schematic diagram of the mesh partitioning according to the present invention.
In the figure, 1 is a light supplement lamp, 2 is a vehicle control unit, 3 is a gearbox controller or an engine controller, and 4 is a gear shifting mechanism.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, camera light filling device behind shown car, including light filling lamp 1, make the illumination of light filling lamp 1 to the scope of irradiation of camera behind through the grading optimization, the input of light filling lamp 1 is connected with vehicle control unit 2's output, vehicle control unit 2 is used for receiving whole car and keeps off a position signal, and when whole car keeps off a position signal and is reverse gear, vehicle control unit 2 drive light filling lamp 1 opens and carries out the light filling for the back camera.
The light supplementing lamp 1 is a reversing lamp or a combination of the reversing lamp and the license plate lamp, when the automobile reverses, if a small lamp of the whole automobile is not started, namely the position lamp and the license plate lamp are not started, the light supplementing lamp is only started by the reversing lamp to supplement light for the shooting environment of the rear camera. If the small lamp of the whole vehicle is turned on, namely the position lamp and the license plate lamp are turned on, the light supplementing lamp is turned on for the reversing lamp and the license plate lamp simultaneously to supplement light for the shooting environment of the rear camera.
The sending and receiving of the gear signals of the whole vehicle are specifically as follows: the input end of the whole vehicle controller 2 is connected with the output end of the gearbox controller or the engine controller 3, the input end of the gearbox controller or the engine controller 3 is connected with the output end of the gear shifting mechanism 4, and the gearbox controller or the engine controller 3 is used for receiving a whole vehicle gear signal sent by the gear shifting mechanism 4 and sending the whole vehicle gear signal to the whole vehicle controller 2.
Referring to fig. 2, the light distribution optimization method of the light supplement device for the rear camera of the automobile includes the following steps:
and S1, arranging model data of the rear camera and the light supplement lamp in a finished automobile model in three-dimensional modeling software, wherein the rear camera and the light supplement lamp 1 are used as visible parts on the finished automobile and need to meet the modeling requirement of the finished automobile. The rear camera meets the arrangement requirement of the camera on the whole vehicle, so that the angle of the rear camera can be adjusted according to the installation height of the whole vehicle and the wide angle of the camera, the image shot by the rear camera looks natural and can feed back the environment behind the vehicle truly, and the light supplement lamp 1, namely a backup lamp or a license plate lamp, needs to meet the corresponding lamp regulation requirement due to being a lamp required by the regulation at the installation position.
And S2, importing the arrangement data of the light supplement lamp in the S1 into light distribution software, performing pavement illumination simulation by adopting the light distribution software on the premise that the light supplement lamp 1 meets the light distribution requirement of corresponding regulations, irradiating light of the light supplement lamp to the camera shooting range of the rear camera as much as possible, dividing a grid on an irradiated surface behind a vehicle and recording brightness values on grid points, wherein the grid is positioned right behind the whole vehicle, the length of the X direction is 10m, the widths of the Y direction and the left direction are respectively 4m, and the distance a is 1 m.
And S3, determining the target brightness value of each point on the grid point according to the shooting range of the rear camera and the brightness value on the grid point recorded in the S2.
And S4, optimizing the light distribution of the light supplement lamp on the basis of S2, enabling the brightness values of all points on the grid of the light irradiated by the light supplement lamp in the grid range to be as large as possible under the premise that the light supplement lamp meets the light distribution required by corresponding regulations, enabling the brightness in the grid range to be uniform or to be uniformly changed, and recording the brightness values of all points on the grid after optimization.
S5, comparing the brightness value of each point on the grid obtained in S4 with the target brightness value in S3, if the brightness value of each point on the grid obtained in S4 is not less than the target brightness value, the optimization is completed, and if the brightness value of each point on the grid obtained in S4 is less than the target brightness value, S3 and S4 are carried out again.
The invention relies on the existing hardware, and considers that the back-up lamp or the combination of the back-up lamp and the license plate lamp is used as the light supplement lamp of the rear camera for light supplement at the beginning of design, so that the illumination of the shooting environment of the rear camera in a low-illumination environment is improved, and the image shot by the rear camera can accurately feed back the rear environment, so that a driver or an automatic parking system of the vehicle can accurately obtain the rear environment information according to the image shot by the rear camera, the driver or the automatic driving of the vehicle can take accurate counter measures according to the rear environment information, the occurrence of vehicle accidents caused by the fact that the rear camera cannot accurately obtain the rear environment information in the low-illumination environment is avoided, the influence of the low-illumination environment on the safety of the vehicle can be effectively overcome, the driving safety is improved, and the user experience is improved. In addition, because hardware and corresponding software are not added, the analysis design is only carried out at the initial design stage, the production cost is not increased, the cost of the vehicle is well reduced, and the method has high practical value and is beneficial to popularization and use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. The utility model provides a camera light filling device behind car which characterized in that: including the light filling lamp, the light filling lamp is the combination of reversing lamp or reversing lamp and license plate lamp, makes the illumination of light filling lamp to the scope of irradiation of back camera through grading optimization, and the input of light filling lamp is connected with vehicle control unit's output, vehicle control unit is used for receiving whole car and keeps off a position signal, and when whole car kept off a position signal and is reversed gear, vehicle control unit drive light filling lamp opened and carries out the light filling for back camera.
2. The light supplement device for the rear camera of the automobile according to claim 1, wherein: the input end of the whole vehicle controller is connected with the output end of the gearbox controller or the engine controller, the input end of the gearbox controller or the engine controller is connected with the output end of the gear shifting mechanism, and a whole vehicle gear signal is sent out through the gearbox controller or the engine controller.
3. A light distribution optimization method of a light supplement device of a rear camera of an automobile is characterized by comprising the following steps:
s1, arranging model data of a rear camera and a light supplement lamp in a finished automobile model in three-dimensional modeling software, wherein the rear camera and the light supplement lamp meet modeling requirements and finished automobile arrangement requirements;
s2, importing the arrangement data of the supplementary lighting lamp in the S1 into light distribution software, simulating the road illumination by adopting the light distribution software, dividing grids on an irradiated surface behind the vehicle and recording the brightness values on the grid points;
s3, determining the target brightness value of each point on the grid point according to the shooting range of the rear camera and the brightness value on the grid point recorded in S2;
s4, optimizing the light distribution of the light supplement lamp on the basis of S2, enabling the brightness values of the points on the grid of the light within the range of the grid irradiated by the light supplement lamp to be as large as possible under the premise that the light supplement lamp meets the light distribution required by corresponding regulations, enabling the brightness within the range of the grid to be uniform or to be uniformly changed, and recording the brightness values of the points on the grid after optimization;
s5, comparing the brightness value of each point on the grid obtained in S4 with the target brightness value in S3, if the brightness value of each point on the grid obtained in S4 is not less than the target brightness value, the optimization is completed, and if the brightness value of each point on the grid obtained in S4 is less than the target brightness value, S3 and S4 are carried out again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110969141.4A CN113761655B (en) | 2021-08-23 | 2021-08-23 | Light supplementing device for rear camera of automobile and light distribution optimization method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110969141.4A CN113761655B (en) | 2021-08-23 | 2021-08-23 | Light supplementing device for rear camera of automobile and light distribution optimization method |
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| CN113761655A true CN113761655A (en) | 2021-12-07 |
| CN113761655B CN113761655B (en) | 2024-01-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114299749A (en) * | 2021-12-28 | 2022-04-08 | 北京畅停天下停车场服务有限公司 | Domestic vehicle parking system with charging function |
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| CN113761655B (en) | 2024-01-19 |
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