CN206781554U - A kind of electric vehicle wireless charging alignment system - Google Patents
A kind of electric vehicle wireless charging alignment system Download PDFInfo
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- CN206781554U CN206781554U CN201720396785.8U CN201720396785U CN206781554U CN 206781554 U CN206781554 U CN 206781554U CN 201720396785 U CN201720396785 U CN 201720396785U CN 206781554 U CN206781554 U CN 206781554U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The utility model discloses a kind of electric vehicle wireless charging alignment system, including being arranged on the wireless charging transmitting coil on ground and being arranged at the electric energy receiving coil of vehicle bottom, also include ground line of reference, camera, image processing module, display, wireless communication module, wherein the wireless communication module includes onboard wireless communication module and terrestrial wireless communication module.The program is based on vehicle-mounted reverse image system, and under the cooperation of ground line of reference, completes wireless charging contraposition.The system accurately calculates offset distance by dynamic generation inner guide wire, and using image processing techniques according to inner guide wire and ground line of reference, can provide intuitive and accurate contraposition auxiliary information to driver.The alignment system has the advantages that hardware cost is low, function is strong, good using simple, significant effect, aligning accuracy height, versatility, is widely used in electric automobile wireless charging field.
Description
Technical field
The utility model is related to electric automobile wireless charging field, more particularly to a kind of electric vehicle of vision guide without
Micro USB electricity alignment system.
Background technology
Electric automobile is the popular research and developing direction of current auto industry field, is worldwide obtained in recent years
Fast-developing and popularization and application.Wireless charging have the advantages that it is non-contact, easy to use, stop to fill, be safe and reliable, can
Provide the user with good Consumer's Experience.But wireless charging technology also faces some in use urgently to be resolved hurrily asks
Topic, the problem of one of them is more crucial are charge coil alignment issues.Brigadier does not substantially reduce charging effect for charge coil contraposition
Rate, being even resulted in when offseting excessive to charge.For the wireless charging device of electric vehicle, because electric energy receiving coil is installed
In on vehicle chassis, electric energy transmitting coil is installed on ground, driver can not be observed during parking electric energy receiving coil and
The relative position of transmitting coil, therefore accurate contraposition can not be carried out.
Publication No. is that 103832337A patent discloses a kind of electric vehicle wireless charging guiding system, including shooting
Head, floor marking line and display.The image of floor marking line is carried on camera collection vehicle rear area, and is superimposed with and takes the photograph
As being transferred to display after head inner guide wire, display is by comparing the position of camera inner guide wire and floor marking line
To guide driver to complete the alignment of charging emitter and pick device.Although the utility model can provide letter for driver
List, guidance information is intuitively aligned, but still have some shortcomings, such as：Inner guide wire by generation inside camera, it is necessary to
Special camera is customized, and vehicle specification difference will cause camera inner guide wire and floor marking line to mismatch, therefore
Versatility deficiency；Only it is aligned by driver by comparing the coincidence degree of inner guide wire and floor marking line, by
Image resolution limits and the influence at driver visual angle, certainly exists certain error, therefore can not accomplish exactitude position；It is another
Aspect, it is impossible to calculate the offset between current-collecting device and emitter, therefore can not provide accurately quantify to align and join
Number.
Therefore the technology is necessary to be improved.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model be to provide it is a kind of it is simple in construction, versatility is good, display
Intuitively, the higher electric vehicle wireless charging contraposition accessory system of precision.
Technical scheme is used by the utility model：
The utility model provides a kind of electric vehicle wireless charging alignment system, including is arranged on the wireless charging hair on ground
Ray circle and the electric energy receiving coil for being arranged at vehicle bottom, the system also include：
Ground line of reference on the ground is set, and the ground line of reference is used to mark the wireless charging transmitting coil
Relative position；
Camera, it is used for collection vehicle rear area image；
Wireless communication module, the wireless communication module include onboard wireless communication module and the installation being installed on vehicle
Terrestrial wireless communication module in ground, the terrestrial wireless communication module are used to send current charging parking stall ground line of reference
Parameter value, the onboard wireless communication module are used for the parameter value for receiving current charging parking stall ground line of reference；
Image processing module, it is installed on vehicle, for the ground reference received according to the wireless communication module
The parameter value generation inner guide wire of line simultaneously calculates the offset distance between inner guide wire and ground line of reference；
Display, it is installed on vehicle, for showing inner guide wire, the skew letter of the generation of described image processing module
Breath and the rear view of vehicle region image of camera collection, by comparing inner guide wire and ground line of reference, and combine skew letter
Breath guiding driver accurately stops vehicle into specified location；
Wherein, the input of the output end of described image processing module and display connects, the output end of the camera,
Input of the output end of onboard wireless communication module with described image processing module is connected, the terrestrial wireless communication module
Output end be connected with the input of the onboard wireless communication module.
As the improvement of the technical scheme, the inner guide wire of described image processing module generation includes being used for laterally aligning
Inner guide wire and the inner guide wire for longitudinally aligning.
As the improvement of the technical scheme, the ground line of reference includes the ground line of reference for laterally aligning and is used for
The ground line of reference longitudinally aligned.
Further, the wireless communication module includes WIFI, bluetooth.
Further, the camera is installed on vehicle.
The beneficial effects of the utility model are：Electric vehicle wireless charging alignment system provided by the utility model, is base
In vehicle-mounted reverse image system, and under the cooperation of ground line of reference, wireless charging contraposition is completed.The system passes through dynamic generation
Inner guide wire, and offset distance, energy are accurately calculated according to inner guide wire and ground line of reference using image processing techniques
It is enough to provide intuitive and accurate contraposition auxiliary information to driver.The locating assist system has that hardware cost is low, function is strong, makes
With simple, significant effect, aligning accuracy is high, versatility is good the advantages that.
Brief description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the structural representation of the electric vehicle wireless charging contraposition accessory system of the utility model first embodiment；
Fig. 2 is the parameter schematic diagram for being used to generate inner guide wire in the display of the utility model first embodiment；
Fig. 3 is the inner guide wire position view of the generation of the utility model first embodiment；
Fig. 4 is the schematic diagram of the offset hints information shown in the display of the utility model first embodiment；
Fig. 5 is that the electric vehicle wireless charging of the utility model second embodiment aligns the structural representation of accessory system；
Fig. 6 is the parameter schematic diagram for being used to generate inner guide wire in the display of the utility model second embodiment；
Fig. 7 is the inner guide wire position view of the generation of the utility model second embodiment；
Fig. 8 is the schematic diagram of the offset hints information shown in the display of the utility model second embodiment；
Fig. 9 is the schematic diagram of the ROI region of the utility model 3rd embodiment；
Figure 10 is the module connection diagram of the utility model fourth embodiment.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.
The utility model provides a kind of electric vehicle wireless charging alignment system, including is arranged on the wireless charging on ground
Transmitting coil and the electric energy receiving coil for being arranged at vehicle bottom, the system also include：
Ground line of reference on the ground is set, and the ground line of reference is used to mark the wireless charging transmitting coil
Relative position；
Camera, it is used for collection vehicle rear area image；
Wireless communication module, the wireless communication module include onboard wireless communication module and the installation being installed on vehicle
Terrestrial wireless communication module in ground, the terrestrial wireless communication module are used to send current charging parking stall ground line of reference
Parameter value, the onboard wireless communication module are used for the parameter value for receiving current charging parking stall ground line of reference；
Image processing module, it is installed on vehicle, for the ground reference received according to the wireless communication module
The parameter value generation inner guide wire of line simultaneously calculates the offset distance between inner guide wire and ground line of reference；
Display, it is installed on vehicle, for showing inner guide wire, the skew letter of the generation of described image processing module
Breath and the rear view of vehicle region image of camera collection, by comparing inner guide wire and ground line of reference, and combine skew letter
Breath guiding driver accurately stops vehicle into specified location；
Wherein, the input of the output end of described image processing module and display connects, the output end of the camera,
Input of the output end of onboard wireless communication module with described image processing module is connected, the terrestrial wireless communication module
Output end be connected with the input of the onboard wireless communication module.
As the improvement of the technical scheme, the inner guide wire of described image processing module generation includes being used for left and right (horizontal stroke
To) contraposition inner guide wire and for front and rear (longitudinal direction) align inner guide wire.
As the improvement of the technical scheme, the ground line of reference includes the ground line of reference for being used for left and right (transverse direction) contraposition
With the ground line of reference aligned for front and rear (longitudinal direction).
Further, the wireless communication module includes WIFI, bluetooth.
Further, the camera is installed on vehicle.
Its corresponding electric vehicle wireless charging alignment method of alignment system provided by the utility model, including following step
Suddenly：
The wireless charging transmitting coil of current charging parking stall is longitudinally aligned line of reference by terrestrial wireless communication module to ground
Distance send to onboard wireless communication module；
The onboard wireless communication module fills according to the installation site of vehicle-mounted camera with the current charging parking stall received
The distance that electric transmitting coil longitudinally aligns line of reference to ground generates inner guide wire；
Image processing module marks off area-of-interest in the rear view of vehicle region image that camera collects；
Image processing module extracted from the area-of-interest laterally contraposition ground line of reference image, and with transverse direction
Align inner guide wire to compare, calculate transmitting coil and the lateral shift distance Lx of receiving coil and inclination angle, and export extremely
Display, wherein Lx are defined as the midpoint of inner guide wire to the distance of laterally contraposition ground line of reference；
Driver according to the offset parameter calculated, control vehicle cause laterally the image of contraposition ground line of reference with
Laterally contraposition inner guide wire overlaps, and then returns positive direction and continues to move car until longitudinal direction contraposition ground line of reference appears in the sense
In interest region；
Image processing module extracts the image of longitudinal direction contraposition ground line of reference from the area-of-interest, and with indulging
Compared to contraposition inner guide wire, calculate the vertical misalignment distance of transmitting coil and receiving coil, and be output to display；
Driver advances again according to the offset parameter calculated, control vehicle, until longitudinal direction contraposition ground line of reference
Image stops when being overlapped with longitudinal direction contraposition inner guide wire, completes contraposition；
Image processing module extracts ground line of reference from the area-of-interest again, and is compared with inner guide wire,
The offset parameter of transmitting coil and receiving coil is calculated, if in default error range, prompts driver to align successfully simultaneously
Start charging, otherwise prompt driver to re-start contraposition.
Further, the area-of-interest includes the bottom center region that camera gathers image.
Further, the contraposition is aligned according to first left and right (transverse direction) the contraposition order that front and rear (longitudinal direction) aligns again.
Wherein, pixel distance D of the inner guide wire longitudinally aligned to display lower boundaryyCalculation formula be：Wherein fyThe mapping relations between y direction pixel distances and physical distance are represented,Represent fyInverse function,
L1Represent wireless charging transmitting coil to the distance of longitudinal direction contraposition ground line of reference, L2Represent electric energy receiving coil to camera
Distance.
Further, pixel distance D of the inner guide wire laterally aligned to display transverse direction axisxCalculation formula
For：Wherein, fxThe mapping relations between x direction pixel distances and physical distance are represented,Represent fxIt is anti-
Function, negative sign "-" represent DxWith L3In opposite direction, L3Represent the journal offset distance of electric energy receiving coil and camera.
A kind of electric vehicle wireless charging alignment system of view-based access control model guiding, including：Ground line of reference, it is arranged on
On ground, for marking the relative position of surface-based wireless charging transmitting coil；
Wireless communication module, including the onboard wireless communication module being installed on vehicle and the ground for being installed on ground installation
Wireless communication module, terrestrial wireless communication module are used for the parameter value for sending current charging parking stall ground line of reference, onboard wireless
Communication module is connected with image processing module, for receiving the parameter value of current charging parking stall ground line of reference and being sent to image
Processing module；
Camera, it is installed on vehicle, for collection vehicle rear area image, and is superimposed with image processing module life
Into inner guide wire and offset information, then be transferred to display；
Image processing module, it is installed on vehicle, is connected respectively with camera, onboard wireless communication module and display
Connect, the parameter value of the ground line of reference for being received according to wireless communication module generates inner guide wire and calculates internal guiding
Offset distance between line and ground line of reference；
Display, it is installed on vehicle, for display image processing module generation inner guide wire, offset information and
The rear view of vehicle region image of camera collection, then by comparing inner guide wire and ground line of reference, and combine offset information
Guiding driver accurately stops vehicle into specified location.
Described image processing module can draw inside the actual parameter dynamic generation according to the current charging parking stall received
Wire.
The ground reference that described image processing module can collect according to the inner guide wire and the camera of generation
Relative position relation between line image calculates offset distance.
The contraposition can carry out left and right (transverse direction) contraposition and front and rear (longitudinal direction) contraposition respectively.
Preferably, the contraposition is aligned according to first left and right (transverse direction) the contraposition order that front and rear (longitudinal direction) aligns again.
Wherein, terrestrial wireless communication module longitudinally aligns current charging parking stall transmitting coil to ground the distance of line of reference
It is sent to onboard wireless communication module；
Vehicle mounted communication module is currently filled according to what the installation site and onboard wireless communication module of vehicle-mounted camera received
The distance that electric car position transmitting coil longitudinally aligns line of reference to ground generates inner guide wire；
Image processing module marks off area-of-interest (Region in the rear view of vehicle region image that camera collects
Of Interest, ROI)；
Image processing module extracts laterally contraposition ground line of reference from ROI, and aligns inner guide wire ratio with horizontal line
It is right, transmitting coil and the lateral shift distance of receiving coil and inclination angle are calculated, and be output on display；
Under guiding of the driver according to the offset parameter calculated, control vehicle causes the shadow of laterally contraposition ground line of reference
As being overlapped with laterally contraposition inner guide wire, then return positive direction and continue to move backward；
Image processing module extracts longitudinal direction contraposition ground line of reference from ROI, and aligns inner guide wire ratio with longitudinal direction
It is right, the vertical misalignment distance of transmitting coil and receiving coil is calculated, and be output on display；
Under guiding of the driver according to the above-mentioned offset parameter calculated, control vehicle is advanced, until longitudinal direction contraposition ground
The image of line of reference stops when being overlapped with longitudinal direction contraposition inner guide wire, completes contraposition；
Image processing module extracts ground line of reference from ROI again, and is compared with inner guide wire, calculates emission lines
The offset parameter of circle and receiving coil, if in default error range, driver is prompted to align successfully and start charging, it is no
Then prompting driver re-starts contraposition.
Embodiment 1
Reference picture 1, the present embodiment provide a kind of electric vehicle wireless charging alignment system of vision guide, including electric energy connects
Take-up circle 1, camera 2, image processing module 3, display 4, inner guide wire 5, ground line of reference 6, wireless charging emission lines
Circle/electric energy transmitting coil 7, wireless communication module 8, charging vehicle 9 and wireless charging parking stall 10.The inner guide wire includes using
The inner guide wire 5-1 aligned in left and right (transverse direction) the and inner guide wire 5-2 for front and rear (longitudinal direction) contraposition；The ground ginseng
Include the ground line of reference 6-1 for being used for left and right (transverse direction) contraposition and the ground line of reference 6-2 for front and rear (longitudinal direction) contraposition according to line,
To increase the identifiability of ground line of reference 6, can use from charging parking stall ground and the different particular color of other graticules or
Line style is distinguish between；The wireless communication module includes onboard wireless communication module 8-1 and terrestrial wireless communication module 8-2；Institute
Image processing module 3 is stated to be electrically connected with the camera 2, display 4 and onboard wireless communication module 8-1.
Driver is aligned by the way of reversing is put in storage in the present embodiment, and detailed process is：
Shown in reference picture 2, electric energy that (1) described terrestrial wireless communication module 8-2 installs current wireless charging electric car position 10
Transmitting coil 7 arrives the distance L that front and rear (longitudinal direction) aligns ground line of reference 6-21It is sent to onboard wireless communication module 8-1；
(2) the parameter L that image processing module 3 receives according to onboard wireless communication module 8-11, and combine current charging
The electric energy receiving coil 1 that vehicle 9 is installed arrives the distance L of camera 22, generated on display 4 for front and rear (longitudinal direction) contraposition
Inner guide wire 5-2, shown in reference picture 3, the inner guide wire 5-2 to display lower boundary pixel distance DyCalculating
Formula is：Wherein, fyThe mapping relations between y direction pixel distances and physical distance are represented,Represent fy
Inverse function；
(3) image processing module 3 is according to electric energy receiving coil 1 and the journal offset distance L of camera 23, in display 4
It is middle to generate for the inner guide wire 5-1, the inner guide wire 5-1 that left and right (transverse direction) aligns to display transverse direction axis
Pixel distance DxCalculation formula be：Wherein, fxRepresent reflecting between x direction pixel distances and physical distance
Penetrate relation,Represent fxInverse function, negative sign "-" represent DxWith L3It is in opposite direction, such as when camera connects relative to electric energy
When the axis of take-up circle is offset to the left as shown in Fig. 2 then the inner guide wire 5-1 in display relative to display transverse direction
Axis is offset to the right as shown in Figure 3, and vice versa；Especially, L is worked as3=0, i.e., in electric energy receiving coil and camera
When axis overlaps, as long as generating inner guide wire 5-1 on the horizontal axis of display；
(4) ground line of reference 6- is extracted in the rear view of vehicle region image that image processing module 3 collects from camera 2
1, and calculate its pixel distance d with inner guide wire 5-1x, and then left and right (transverse direction) offset distance L is shown in the displayxWith
And adjustment direction, as shown in Figure 4, LxCalculation formula be：Lx=fx(dx), wherein, fxRepresent x direction pixel distances and physics
Mapping relations between distance；
(5) ground line of reference 6- is extracted in the rear view of vehicle region image that image processing module 3 collects from camera 2
2, and calculate its pixel distance d with inner guide wire 5-2y, and then (longitudinal direction) offset distance L before and after display in the displayy,
As shown in Figure 4, LyCalculation formula be：Ly=fy(dy), wherein, fyRepresent between y direction pixel distances and physical distance
Mapping relations；
(6) driver is by comparing the image 6-1 ' of inner guide wire 5-1 and ground line of reference 6-1 in display, and
With reference to left and right (transverse direction) offset distance LxLeft and right (transverse direction) contraposition is carried out, until inner guide wire 5-1 and ground line of reference 6-1
Image 6-1 ' aligns, and returns positive direction and continues to move backward；
(7) driver is by comparing the image 6-2 ' of inner guide wire 5-2 and ground line of reference 6-2 in display, and
(longitudinal direction) offset distance L with reference to before and aftery(longitudinal direction) aligns before and after progress, until inner guide wire 5-2 and ground line of reference 6-2
Image 6-2 ' aligns, and stops reversing；
(8) system judges LxAnd LyWhether in default error range, if so, then prompting driver aligns successfully, and lead to
Crossing wireless communication module, earthward charging device sends chargeable signal, otherwise, prompts driver to re-start contraposition.
Embodiment 2
A kind of electric vehicle wireless charging alignment system of vision guide, its structure are identical with implementing 1.As shown in figure 5, this
Driver is aligned by the way of headstock storage in embodiment, and detailed process is：
(1) before the terrestrial wireless communication module 8-2 arrives the electric energy transmitting coil 7 that current wireless charging electric car position 10 is installed
(longitudinal direction) contraposition ground line of reference 6-2 distance L afterwards1, as shown in fig. 6, being sent to onboard wireless communication module 8-1；
(2) the parameter L that image processing module 3 receives according to onboard wireless communication module 8-11, and combine current charging
The electric energy receiving coil 1 that vehicle 9 is installed arrives the distance L of camera 22, generate on display 4 and aligned for front and rear (longitudinal direction)
Inner guide wire 5-2, as shown in fig. 7, pixel distance Ds of the inner guide wire 5-2 to display lower boundaryyCalculating it is public
Formula is：Wherein, fyThe mapping relations between y direction pixel distances and physical distance are represented,Represent fy's
Inverse function；
(3) image processing module 3 is according to electric energy receiving coil 1 and the journal offset distance L of camera 23, in display 4
It is middle to generate for the inner guide wire 5-1, the inner guide wire 5-1 that left and right (transverse direction) aligns to display transverse direction axis
Pixel distance DxCalculation formula be：Wherein, fxRepresent reflecting between x direction pixel distances and physical distance
Penetrate relation,Represent fxInverse function, negative sign "-" represent DxWith L3It is in opposite direction, for example, in this example when camera phase
When being offset to the left for the axis of electric energy receiving coil, as shown in fig. 6, then the inner guide wire 5-1 in display relative to
The horizontal axis of display is offset to the left, as shown in fig. 7, vice versa；Especially, L is worked as3=0, i.e., electric energy receiving coil and
When the axis of camera overlaps, as long as generating inner guide wire 5-1 on the horizontal axis of display；
(4) ground line of reference 6- is extracted in the rear view of vehicle region image that image processing module 3 collects from camera 2
1, and calculate its pixel distance d with inner guide wire 5-1x, and then left and right (transverse direction) offset distance L is shown in the displayxWith
And adjustment direction, as shown in figure 8, Lx=fx(dx), wherein, fxRepresent that the mapping between x direction pixel distances and physical distance is closed
System；
(5) ground line of reference 6- is extracted in the rear view of vehicle region image that image processing module 3 collects from camera 2
2, and calculate its pixel distance d with inner guide wire 5-2y, and then (longitudinal direction) offset distance L before and after display in the displayy,
As shown in figure 8, LyCalculation formula be：Ly=fy(dy), wherein, fyRepresent reflecting between y direction pixel distances and physical distance
Penetrate relation；
(6) driver is by comparing the image 6-1 ' of inner guide wire 5-1 and ground line of reference 6-1 in display, and
With reference to left and right (transverse direction) offset distance LxLeft and right (transverse direction) contraposition is carried out, until inner guide wire 5-1 and ground line of reference 6-1
Image 6-1 ' aligns, and returns positive direction and moves on；
(7) driver is by comparing the image 6-2 ' of inner guide wire 5-2 and ground line of reference 6-2 in display, and
(longitudinal direction) offset distance L with reference to before and afteryFront and rear contraposition is carried out, until inner guide wire 5-2 and ground line of reference 6-2 image 6-
2 ' alignment, stop immediately；
(8) system judges LxAnd LyWhether in default error range, if so, then prompting driver aligns successfully, and lead to
Crossing wireless communication module, earthward charging device sends chargeable signal, otherwise, prompts driver to re-start contraposition.
Embodiment 3
Electric vehicle wireless charging alignment method, comprises the following steps corresponding to the present embodiment：
(1) terrestrial wireless communication module longitudinally aligns current charging parking stall transmitting coil to ground the distance hair of line of reference
Give onboard wireless communication module；
(2) vehicle mounted communication module receives current according to the installation site and onboard wireless communication module of vehicle-mounted camera
The distance that the parking stall transmitting coil that charges longitudinally aligns line of reference to ground generates inner guide wire；
(3) shown in reference picture 9, image processing module marks off in the rear view of vehicle region image that camera collects
Area-of-interest (Region of Interest, ROI)；
(4) image processing module extracts the image 6-1 ' of laterally contraposition ground line of reference from ROI, and is aligned with horizontal line
Inner guide wire 5-1 is compared, and calculates the lateral shift distance L of transmitting coil and receiving coilxAnd inclined angle alpha, and be output to
On display, wherein LxInner guide wire 5-1 midpoint is defined as to the distance of laterally contraposition ground line of reference；
(5) under the guiding for the offset parameter that driver calculates in step (4), control vehicle causes laterally contraposition ground
The image 6-1 ' of line of reference overlaps with laterally contraposition inner guide wire 5-1, then returns positive direction and continues reversing until longitudinal direction contraposition
Ground line of reference occurs in the roi；
(6) image processing module extracted from ROI longitudinal direction contraposition ground line of reference image 6-2 ', and with longitudinal contraposition
Inner guide wire 5-2 is compared, and calculates the vertical misalignment distance of transmitting coil and receiving coil, and be output on display；
(7) under the guiding for the offset parameter that driver calculates in step (6), control vehicle is advanced, until longitudinal direction is right
The image 6-2 ' of position ground line of reference stops when being overlapped with longitudinal direction contraposition inner guide wire 5-2, completes contraposition；
(8) image processing module extracts ground line of reference from ROI again, and is compared with inner guide wire, and calculating is set out
The offset parameter of ray circle and receiving coil, if in default error range, driver is prompted to align successfully and start charging,
Otherwise prompting driver re-starts contraposition.
Preferably, ROI is the FX chosen, and it includes a region of camera review bottom center, i.e.,
The region that Fig. 9 centers come out.
It should be noted that：In above-described embodiment, camera parameter fxAnd fyExpression formula can be obtained by camera calibration
Arrive, and camera calibration technology and implementation process are known to image processing field technical staff.
Embodiment 4
Reference picture 10, it is the module connection diagram of the utility model fourth embodiment.A kind of electric vehicle wireless charging
Alignment system, including be arranged on the wireless charging transmitting coil on ground and be arranged at the electric energy receiving coil of vehicle bottom, institute
Stating system also includes：
Ground line of reference on the ground is set, and the ground line of reference is used to mark the wireless charging transmitting coil
Relative position；
Camera, it is used for collection vehicle rear area image；
Wireless communication module, the wireless communication module include onboard wireless communication module and the installation being installed on vehicle
Terrestrial wireless communication module in ground, the terrestrial wireless communication module are used to send current charging parking stall ground line of reference
Parameter value, the onboard wireless communication module are used for the parameter value for receiving current charging parking stall ground line of reference；
Image processing module, it is installed on vehicle, for the ground reference received according to the wireless communication module
The parameter value generation inner guide wire of line simultaneously calculates the offset distance between inner guide wire and ground line of reference；
Display, it is installed on vehicle, for showing inner guide wire, the skew letter of the generation of described image processing module
Breath and the rear view of vehicle region image of camera collection, by comparing inner guide wire and ground line of reference, and combine skew letter
Breath guiding driver accurately stops vehicle into specified location；
Wherein, the input of the output end of described image processing module and display connects, the output end of the camera,
Input of the output end of onboard wireless communication module with described image processing module is connected, the terrestrial wireless communication module
Output end be connected with the input of the onboard wireless communication module.
Electric vehicle wireless charging alignment system provided by the utility model, it is to be based on vehicle-mounted reverse image system, and
Under the cooperation of ground line of reference, wireless charging contraposition is completed.The system is used at image by dynamic generation inner guide wire
Reason technology accurately calculates offset distance according to inner guide wire and ground line of reference, and it is directly perceived, accurate to be provided to driver
Contraposition auxiliary information.The locating assist system has that hardware cost is low, function is strong, using simple, significant effect, aligning accuracy
High, the advantages that versatility is good.
Above is preferably implement to be illustrated to of the present utility model, but the invention is not limited to the reality
Example is applied, those skilled in the art can also make a variety of equivalent changes on the premise of without prejudice to the utility model spirit
Shape or replacement, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of electric vehicle wireless charging alignment system, including be arranged on the wireless charging transmitting coil on ground and be arranged at
The electric energy receiving coil of vehicle bottom, it is characterised in that the system also includes：
Ground line of reference on the ground is set, and the ground line of reference is used for the phase for marking the wireless charging transmitting coil
To position；
Camera, it is used for collection vehicle rear area image；
Wireless communication module, the wireless communication module include the onboard wireless communication module being installed on vehicle and are installed on ground
The terrestrial wireless communication module in face, the terrestrial wireless communication module are used for the parameter for sending current charging parking stall ground line of reference
Value, the onboard wireless communication module are used for the parameter value for receiving current charging parking stall ground line of reference；
Image processing module, it is installed on vehicle, for the ground line of reference that is received according to the wireless communication module
Parameter value generates inner guide wire and calculates the offset distance between inner guide wire and ground line of reference；
Display, it is installed on vehicle, for show described image processing module generation inner guide wire, offset information and
The rear view of vehicle region image of camera collection, draw by comparing inner guide wire and ground line of reference, and with reference to offset information
Driver is led accurately to stop vehicle into specified location；
Wherein, the input of the output end of described image processing module and display connects, the output end of the camera, vehicle-mounted
Input of the output end of wireless communication module with described image processing module is connected, the terrestrial wireless communication module it is defeated
Go out end to be connected with the input of the onboard wireless communication module.
2. electric vehicle wireless charging alignment system according to claim 1, it is characterised in that：Described image processing module
The inner guide wire of generation includes the inner guide wire for laterally aligning and the inner guide wire for longitudinally aligning.
3. electric vehicle wireless charging alignment system according to claim 2, it is characterised in that：The ground line of reference bag
Include the ground line of reference for laterally aligning and the ground line of reference for longitudinally aligning.
4. electric vehicle wireless charging alignment system according to claim 3, it is characterised in that：The wireless communication module
Including WIFI, bluetooth.
5. electric vehicle wireless charging alignment system according to claim 1, it is characterised in that：The camera is installed on
On vehicle.
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| CN201720396785.8U CN206781554U (en) | 2017-04-14 | 2017-04-14 | A kind of electric vehicle wireless charging alignment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107054136A (en) * | 2017-04-14 | 2017-08-18 | 深圳大学 | A kind of electric vehicle wireless charging alignment system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107054136A (en) * | 2017-04-14 | 2017-08-18 | 深圳大学 | A kind of electric vehicle wireless charging alignment system and method |
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