CN208149176U - Rearview mirror adjustment system based on Ins location - Google Patents
Rearview mirror adjustment system based on Ins location Download PDFInfo
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- CN208149176U CN208149176U CN201820294366.8U CN201820294366U CN208149176U CN 208149176 U CN208149176 U CN 208149176U CN 201820294366 U CN201820294366 U CN 201820294366U CN 208149176 U CN208149176 U CN 208149176U
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- 230000004308 accommodation Effects 0.000 claims abstract description 6
- 238000013500 data storage Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001815 facial effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 3
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- 238000003384 imaging method Methods 0.000 description 3
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- 206010039203 Road traffic accident Diseases 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
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Abstract
The utility model relates to automobile technical fields, and in particular to a kind of rearview mirror adjustment system based on Ins location, the system comprises：Main operational module and the image collecting device being connect respectively with the main operational module, backsight mirror drive, the backsight mirror drive is connect with vehicle mirrors, the main operational module obtains the information of described image acquisition device, human eye is carried out to driver by human eye location algorithm according to the information of described image acquisition device to position to obtain operator accommodations' coordinate, so that the backsight mirror drive is adjusted the vehicle mirrors according to the space coordinate and is rotated.By the utility model, the optimal sight line of eye-observation rearview mirror can be quickly and accurately found.
Description
Technical field
The utility model relates to automobile technical fields, and in particular to a kind of rearview mirror adjustment system based on Ins location.
Background technique
With the development of the times, more and more families start the automobile for possessing oneself, and popularizing for automobile is gone on a journey to people
Great convenience is brought, also brings inevitable traffic accident at the same time, and increasing year by year.Automobile is expert at
During sailing or parking, since driver will cause traffic accident without understanding the environment of motor vehicle environment in time often, after
Visor observes the tool of rear and two sides situation as auxiliary driver, it is essential when being safe driving and parking.
What is generally installed on major part automobile at present is driven rearview mirrors, it has convenient and fast advantage, but still has deficiency
Place, such as when replacing the driver of different statures, driver needs repeatedly to be adjusted by button to be recognized in the car
There is very big danger if the attention of driver will be dispersed by being adjusted in driving procedure for the suitable rear ken
Property, in addition, some drivers especially fresh driver, the adjusting for not grasping best mirror field of view when visor after adjustment is former
Reason, may cause that mirror field of view range is unreasonable, to bury the security risk of driving.
Utility model content
For disadvantages mentioned above and deficiency, the utility model provides a kind of rearview mirror adjustment system based on Ins location,
Quickly and accurately to find the optimal sight line of eye-observation rearview mirror.
To achieve the above object, the utility model provides following technical solution：
A kind of rearview mirror adjustment system based on Ins location, the system comprises：Main operational module and respectively with
Image collecting device, the backsight mirror drive of main operational module connection, after the backsight mirror drive and vehicle
Visor connection, the main operational module obtains the information of described image acquisition device, according to the letter of described image acquisition device
Breath carries out human eye to driver by human eye location algorithm and positions to obtain operator accommodations' coordinate, makes institute according to the space coordinate
It states backsight mirror drive and adjusts the vehicle mirrors rotation.
Preferably, the main operational module includes：
Core processor and the power-switching circuit being electrically connected respectively with the core processor, data storage；
The power-switching circuit is electrically connected with automobile storage battery；
The core processor is also connect with described image acquisition device, backsight mirror drive respectively.
Preferably, the system also includes：
The switch being electrically connected with the core processor；After the core processor receives switching signal, described in control
Image collecting device work, and pass through the information of data storage storage described image acquisition device.
Preferably, the model of described image acquisition device：OV9655.
Preferably, the backsight mirror drive includes：
Motor driver and the backsight mirror motor being electrically connected with the motor driver；The motor driver with it is described
Core processor electrical connection, the backsight mirror motor and the vehicle mirrors are mechanically connected.
Preferably, the vehicle mirrors include：Left-hand mirror and right rear view mirror；
There are four the motor drivers, including：First left driver, the second left driver, the first right driver, second
Right driver；
There are four the backsight mirror motors, including：Behind first left-hand mirror motor, the second left-hand mirror motor, first right side
Visor motor, the second right rear view mirror motor.
Preferably, the model of the motor driver：UIM240.
Preferably, the model of the core processor：S3C2440.
The beneficial effects of the utility model are：
Rearview mirror adjustment system provided by the utility model based on Ins location, main operational module obtain Image Acquisition
The information of device carries out human eye positioning to driver by human eye location algorithm according to the information of described image acquisition device, obtains
To operator accommodations' coordinate；The main operational module makes the backsight mirror drive adjust vehicle according to the space coordinate
Rearview mirror rotation.By the utility model, the optimal sight line of eye-observation rearview mirror can be quickly and accurately found.
Detailed description of the invention
Fig. 1 is the first structural schematic diagram of rearview mirror adjustment system of the utility model embodiment based on Ins location.
Fig. 2 is second of structural schematic diagram of rearview mirror adjustment system of the utility model embodiment based on Ins location.
Fig. 3 is the third structural schematic diagram of rearview mirror adjustment system of the utility model embodiment based on Ins location.
Fig. 4 is moving range schematic diagram inside and outside left-hand mirror.
Fig. 5 is left-hand mirror fluctuation range schematic diagram.
Fig. 6 is that schematic diagram is connected to motor in UIM240 in the utility model embodiment.
Specific embodiment
In order to enable those skilled in the art to be further understood that the feature and technology contents of the utility model, below with reference to
Drawings and embodiments elaborate to the utility model embodiment.
It is that the first structure of rearview mirror adjustment system of the utility model embodiment based on Ins location is shown as shown in Figure 1
It is intended to, the system comprises：Main operational module and the image collecting device being connect respectively with the main operational module, after
Visor driving device, the backsight mirror drive are connect with vehicle mirrors, and the main operational module obtains described image
The information of acquisition device carries out human eye positioning to driver by human eye location algorithm according to the information of described image acquisition device
Operator accommodations' coordinate is obtained, so that the backsight mirror drive is adjusted the vehicle mirrors according to the space coordinate and turns
It is dynamic.
It should be noted that human eye location algorithm is conventional algorithm, specifically, image collecting device in the present embodiment
(for example, infrared camera) collects the facial image of driver, and relatively stable Gray Projection can be selected in main operational module
Human eye location algorithm realize human eye positioning, and verify its effect, further, main operational module is first to the face of driver
Image carries out similarity calculation, the pixel gray value of the facial image of driver is become more uniform, so as to reduce
The influence of environmental factor improves the accuracy rate of detection.Specifically calculating formula of similarity is：
Wherein, f in formula1(x, y) is the pixel pair of target point in original image
The gray value answered, f (x, y) are obtained gray value after similarity calculation, and a, b, c are the parameter adjusted according to environmental demand
Value.After obtaining the image after similarity calculation, carry out binary conversion treatment, i.e., pixel all in image is all provided be set to it is white
Color or black, main function are that the background in facial image and image is carried out differentiation processing, make human face region more
Obviously, discrimination is improved.Image is needed to carry out Gray Projection, main function respectively in the vertical direction and the horizontal direction after binaryzation
It is to obtain the region both vertically and horizontally of face, one rectangular area of determination that thus can be rough, the area
Domain is human face region.After obtaining human face region, orientation range definitely, makes the accuracy rate of algorithm is opposite to improve in this way.
Therefore on the basis of human face region, edge detection is carried out to the region, major function is to delete the unrelated letter of this panel region
Breath only retains the important special human eye location algorithm for realizing Gray Projection of face area.By these features and human eye feature into
Apparent eye feature point is found in the operations such as row comparison, traversal, then the point is face eye locations, to realize that gray scale is thrown
The human eye location algorithm of shadow.
Specifically, as shown in Fig. 2, the main operational module includes：
Core processor and the power-switching circuit being electrically connected respectively with the core processor, data storage；Institute
Power-switching circuit is stated to be electrically connected with automobile storage battery；The core processor also respectively with described image acquisition device, backsight
Mirror drive connection.
The power-converting circuit, for converting the voltage of the automobile storage battery to the demand of the core processor
Voltage.For example, the demand voltage of core processor is 5V, automobile storage battery 12V, then power-converting circuit converts 12V to
5V。
Specifically, the data storage may include SDRAM (Synchronous Dynamic Random Access
Memory, synchronous DRAM) and NandFlash.
SDRAM is to provide ephemeral data parking space, SDRAM for the operation of linux system program and positioning application program
It is that can provide operational site and interim data processing space for systematic difference program, at the facial image of driver
The programs such as reason carry out in the synchronous dynamic random access memory.Therefore its action being mainly responsible for is operation human eye positioning
Code process driver's image.
The adjusting that NandFlash stores application program designed by linux system main program and the present invention and needs record
Data.Nand-flash memory is one kind of flash memory, internal to use non-linear macroelement mode, is that solid-state is big
The realization of capacity memory provides cheap effective solution scheme.Nand-flash memory has capacity larger, rewrites speed
The advantages that fast, suitable for the storage of mass data, thus is in the industry cycle more and more widely used, in embedded product
Including digital camera, MP3 walkman memory card, USB flash disk of compact etc..The capacity of Nand Flash is sufficiently large, and reads and writes
Speed is fast, and internal structure is that have non-volatile with NAND gate composition storage unit with very high Density Units.This reality
The novel main read-only memory for selecting Nand Flash as system is used, Nand Flash concrete model can be
K9F1208UOM。
Specifically, in the utility model embodiment, the model of the core processor can be S3C2440.Core processing
Device can complete the functions such as Image Acquisition, framing operation, the transmission of control instruction and driving adjusting.
Further, as shown in Fig. 2, the system also includes：
The switch being electrically connected with the core processor；After the core processor receives switching signal, described in control
Image collecting device work, and pass through the information of data storage storage described image acquisition device.
Specifically, in the utility model embodiment, the model of described image acquisition device can be：OV9655.This is practical
In new embodiment, Image Acquisition is that a mistake of core processor is sent to after digitizing driver's analog image
Journey, the first step which realizes as system automatic regulation function have important influence.Image capture device is wanted
Guarantee to can be realized high in the process of moving for driver in real time under the premise of for the driving operation of its embedded system
The acquisition image of effect, and have acquired image and clearly meet fixed condition enough.It, must for the accuracy for guaranteeing door mirror angle
It must accomplish the following aspects premised on the acquisition quality of image：
1. considering the variability of car steering environment, internal illumination factor cannot be guaranteed, then in low illumination
In the case where night, the higher infrared camera of clarity should be used, it is wider to the dynamic range range of light perception, it protects
For card in the insufficient situation of light, imaging clearly meets location condition enough.
2. the lens focus of camera is divided into fixed focal length and variable focal length, the focal length of camera lens decides the big of shooting imaging
Small, variable focal length is the camera lens that a kind of continuous variable changes focal length, and this system be shot in normal driving space, and
And need to guarantee camera on fixed position, resolution ratio is improved to acquire image there is no need to zoom, selects fixed coke
Also to guarantee that accurate face characteristic can be presented in acquired image on picture-taking position away from camera lens, guarantee that driver exists
Areas imaging in image is conducive to the reliability and stability of human eye fixation and recognition.In conclusion model can be used
The digital camera head of OV9655.
Specifically, in the utility model embodiment, the backsight mirror drive includes：
Motor driver and the backsight mirror motor being electrically connected with the motor driver；The motor driver with it is described
Core processor electrical connection, the backsight mirror motor and the vehicle mirrors are mechanically connected.It should be noted that this is practical new
In type embodiment, automobile storage battery may be that motor driver provides power supply.Specifically, motor driver receives at core
Backsight mirror motor is controlled after driving signal transmitted by reason device, the operating of backsight mirror motor drives the rotation axis of rearview mirror to make
Rearview mirror is adjusted onto target position.
The utility model specifically executes process：Main operational processor is automatically turned on the starting of automobile, then
System initializes each hardware device, sends data information and obtains information to hardware or from hardware, and according to volume
The application program transmitting-receiving requestor write, detection device whether there is abnormal conditions or error message.Initialization is completed laggard
Enter system loitering phase, the switching information of switch is identified, after receiving the signal that switch sends over, opens image and adopt
Acquisition means and the information for reading image collecting device after confirmation obtains the image of driver, start the position identification of driver, first
Human eye positioning first is carried out to image, correction is carried out to coordinate to obtain correct operator accommodations' seat after obtaining position coordinates
Mark, the rotation angle of left and right rearview mirror is calculated separately according to the transformational relation of the space coordinate and rearview mirror, after the completion letter
Breath is sent to motor driver, and backsight mirror motor adjusts on vehicle mirrors to corresponding position.
Further, as shown in figure 3, the vehicle mirrors include：Left-hand mirror and right rear view mirror；The motor driver
There are four, including：First left driver, the second left driver, the first right driver, the second right driver；The rearview mirror electricity
There are four machines, including：First left-hand mirror motor, the second left-hand mirror motor, the first right rear view mirror motor, the second right rear view mirror
Motor.Wherein, all motor drivers are electrically connected with core processor, and the first left driver and the first left-hand mirror motor connect
It connects, the second left driver is connect with the second left-hand mirror motor, and the first left-hand mirror motor, the second left-hand mirror motor are also distinguished
It is electrically connected with left-hand mirror；First right driver is connect with the first right rear view mirror motor, the second right driver and the second right backsight
Mirror motor connection, the first right rear view mirror motor, the second right rear view mirror motor are also connect with right rear view mirror respectively.Further, in Fig. 3
Middle automobile storage battery can also be respectively the first left driver in backsight mirror drive, the second left driver, the first right driving
Device, the second right driver power supply.
Specifically, the transformational relation of space coordinate and rearview mirror is as follows：
It is able to observe that outside vehicle for optimum field by left-hand mirror driver, moving range such as Fig. 4 inside and outside left-hand mirror
Shown, when the eye locations of driver are (rear) mobile forward along x-axis, rear-view mirror needs the central point along i axis to move, phase
U point inwardly (outer) rotation for the left margin of rearview mirror.
Left-hand mirror is set as 0 degree of angle in outermost extreme position, and left-hand mirror is inwardly until the angle that the limit is rotated
For αmax, at this point, the distance that corresponding driver eye position moves forward then is xmax, it can be seen that driver eye position is mobile
Distance and left-hand mirror adjust angle at certain proportionate relationship.If：Inside and outside adjustment parameter is d, be can be obtained：αmax=
dxmax。
Left-hand mirror fluctuation range is as shown in figure 5, the eye locations as driver are moved along y-axis to upper (lower)
When, left-hand mirror needs the central point along j axis to move, i.e. V point (preceding) rotation backward relative to edge on rearview mirror.Left-hand mirror
0 degree of angle is set as in the extreme position on most, left-hand mirror is to until the angle of extreme rotational is βmax, driver is corresponded at this time
The distance that eye locations move up then is ymax。
If：Up and down adjustment parameter is e, be can be obtained：βmax=eymax。
If actual position coordinate (i.e. space coordinate) is (x ' y ') in the car for driver institute, needed for being calculated
Inside and outside rotation angle △ α of left-hand mirror, up and down adjustment rotation angle △ β be respectively：
Wherein：βk-1、βkRespectively angle locating for rearview mirror and this angle adjusted, when △ α or △ β value is timing, control
Stepper motor processed rotates forward, when △ α or △ β value is negative, control stepper motor reversion.Needed for obtaining rearview mirror from origin
Angle (△ α, △ β) that is inside and outside, adjusting rotation respectively up and down.
Specifically, in the utility model embodiment, the model of the motor driver can be：UIM240.Such as Fig. 6 institute
Show, UIM240 is a series of miniature high performance stepper motor drivers, it is characterized in that small in size, driving capability is strong, high
Fast electric current compensation function, can small electromotor high-speed rotation when reaction gesture caused by influence, using 12V DC be power port
(VCC, GND) power supply, meets vehicle power supply voltage.Wherein the port DIR is direction signal input terminal.It is controlled by high and low level
It turns to, vacant state is defaulted as high level.STP port is stepper motor pulse input end.Failing edge is an effective impulse.
The duration of pulses low should be greater than 8us.Signal frequency is up to 50KHz.The port EN is off line signal input part, low electricity
Usually electric current is cut off, and rotor is in free state.High level or it is hanging when, motor is in slave mode.There is low level switching
High level retransmits step-by-step impulse after should waiting 1ms.In the case where non-overload, the angle and motor of stepper motor rotation are received
The pulse signal arrived is related, i.e., when stepper motor driver often receives a pulse signal, it will drive stepper motor setting
Fixed direction rotates a fixed angle.Therefore this system can control the rotation of stepper motor by control pulse number
Angle, thus the angle adjusted needed for reaching rearview mirror automatic regulating system.In Fig. 6, M refers to the electricity connecting with motor driver
Machine, model 28byj-48-12, it is five lines, four facies pattern motor, has tetra- ports A+, A-, B+, B-.
In conclusion system provided by the utility model using embeded processor as core, is acquired using single camera
The image of driver in the car carries out eye positioning to driver's image by human eye location algorithm, to obtain driver's eye
Adjustment angle needed for the spatial position in portion and rearview mirror, driving backsight mirror motor positioning, which is adjusted, obtains correct position, passes through this
Utility model can fast and accurately find the optimal sight line of eye-observation rearview mirror, both maintain driven rearview mirrors electric adjustable
The advantages of section, and overcome and need multiple adjusting rearview mirror and cannot be guaranteed the shortcomings that obtaining optimum field, application prospect is wide
It is general.
The utility model embodiment is described in detail above, specific embodiment used herein is practical to this
It is novel to be expounded, the above embodiments are only used to help understand the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range, to sum up
Described, the content of the present invention should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of rearview mirror adjustment system based on Ins location, which is characterized in that the system comprises：Main operational module with
And image collecting device, the backsight mirror drive being connect respectively with the main operational module, the backsight mirror drive
It is connect with vehicle mirrors, the main operational module obtains the information of described image acquisition device, is acquired according to described image
The information of device carries out human eye to driver by human eye location algorithm and positions to obtain operator accommodations' coordinate, according to the space
Coordinate makes the backsight mirror drive adjust the vehicle mirrors rotation.
2. the rearview mirror adjustment system according to claim 1 based on Ins location, which is characterized in that the main operational
Module includes：
Core processor and the power-switching circuit being electrically connected respectively with the core processor, data storage；
The power-switching circuit is electrically connected with automobile storage battery；
The core processor is also connect with described image acquisition device, backsight mirror drive respectively.
3. the rearview mirror adjustment system according to claim 2 based on Ins location, which is characterized in that the system is also wrapped
It includes：
The switch being electrically connected with the core processor；After the core processor receives switching signal, described image is controlled
Acquisition device work, and pass through the information of data storage storage described image acquisition device.
4. the rearview mirror adjustment system according to claim 3 based on Ins location, which is characterized in that described image acquisition
The model of device：OV9655.
5. the rearview mirror adjustment system according to claim 4 based on Ins location, which is characterized in that the rearview mirror drives
Dynamic device includes：
Motor driver and the backsight mirror motor being electrically connected with the motor driver；The motor driver and the core
Processor electrical connection, the backsight mirror motor and the vehicle mirrors are mechanically connected.
6. the rearview mirror adjustment system according to claim 5 based on Ins location, which is characterized in that the vehicle rearview
Mirror includes：Left-hand mirror and right rear view mirror；
There are four the motor drivers, including：First left driver, the second left driver, the first right driver, the second right drive
Dynamic device；
There are four the backsight mirror motors, including：First left-hand mirror motor, the second left-hand mirror motor, the first right rear view mirror
Motor, the second right rear view mirror motor.
7. the rearview mirror adjustment system according to claim 6 based on Ins location, which is characterized in that the motor driven
The model of device：UIM240.
8. the rearview mirror adjustment system according to claim 7 based on Ins location, which is characterized in that the core processing
The model of device：S3C2440.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294366.8U CN208149176U (en) | 2018-03-02 | 2018-03-02 | Rearview mirror adjustment system based on Ins location |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294366.8U CN208149176U (en) | 2018-03-02 | 2018-03-02 | Rearview mirror adjustment system based on Ins location |
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| CN208149176U true CN208149176U (en) | 2018-11-27 |
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| CN201820294366.8U Expired - Fee Related CN208149176U (en) | 2018-03-02 | 2018-03-02 | Rearview mirror adjustment system based on Ins location |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918337A (en) * | 2021-04-02 | 2021-06-08 | 东风汽车集团股份有限公司 | Intelligent cabin adjusting system and method for identifying eye position |
| CN113370901A (en) * | 2021-07-22 | 2021-09-10 | 中国第一汽车股份有限公司 | Rearview mirror adjusting method, device, equipment and storage medium |
-
2018
- 2018-03-02 CN CN201820294366.8U patent/CN208149176U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112918337A (en) * | 2021-04-02 | 2021-06-08 | 东风汽车集团股份有限公司 | Intelligent cabin adjusting system and method for identifying eye position |
| CN113370901A (en) * | 2021-07-22 | 2021-09-10 | 中国第一汽车股份有限公司 | Rearview mirror adjusting method, device, equipment and storage medium |
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