CN117607054A - Dynamic inspection device and dynamic inspection method for vehicle sample - Google Patents
Dynamic inspection device and dynamic inspection method for vehicle sample Download PDFInfo
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- CN117607054A CN117607054A CN202311743609.3A CN202311743609A CN117607054A CN 117607054 A CN117607054 A CN 117607054A CN 202311743609 A CN202311743609 A CN 202311743609A CN 117607054 A CN117607054 A CN 117607054A
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- 238000007689 inspection Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 104
- 238000001514 detection method Methods 0.000 claims abstract description 95
- 230000000694 effects Effects 0.000 abstract description 9
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 208000028571 Occupational disease Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000003384 imaging method Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8806—Specially adapted optical and illumination features
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
Abstract
The invention discloses a dynamic inspection device and a dynamic inspection method for a vehicle sample, wherein the dynamic inspection device for the vehicle sample comprises a driving mechanism, a bracket and an image acquisition mechanism; the driving mechanism comprises a plate link chain and a detection unit, and the detection unit is used for detecting and feeding back the position information of the vehicle; the bracket comprises a cross beam and vertical beams respectively connected with two ends of the cross beam; the image acquisition mechanism comprises a first image acquisition mechanism and a second image acquisition mechanism, and the image acquisition mechanism is used for moving and shooting a vehicle shi-like image through the vehicle position information fed back by the detection unit. According to the dynamic inspection device for the vehicle sample, the image acquisition mechanism is used for realizing omnibearing shooting, the detection unit is used for detecting and feeding back the specific moving position of the vehicle, so that the image acquisition mechanism is controlled to move, the image acquisition and inspection of a more accurate position can be realized, the shooting effect is better, and the compatibility of the guiding equipment is improved when a vehicle type or hardware is newly added.
Description
Technical Field
The invention relates to the technical field of intelligent detection of vehicle shi sample, in particular to a dynamic detection device and a dynamic detection method for a vehicle shi sample.
Background
The Shi-like inspection refers to the inspection and confirmation of false and underrun of vehicle assembly parts. That is, it is checked whether the vehicle is equipped with the corresponding parts and whether the kind and specification of the assembled parts are accurate.
Currently, most of domestic manufacturers use manual visual inspection to confirm, i.e. to check a configuration table, whether the parts assembled by the vehicle body are underleaked or wrongly assembled. The method relies on artificial sensory judgment, is influenced by the state (fatigue and emotion) of the inspector, has low quality assurance degree and has poor outflow risk; and because of the numerous items of the shi-ke examination (not lower than 130 items/vehicle type), the number of people who carry out the shi-ke examination exceeds 4 people/value. The working time of the operators is too large, and more bending and squatting accompanying actions exist, so that occupational disease risks exist.
There are also few factories to try on the inspection scheme of the leading-in equipment, the assembly state pictures of the parts are collected by using a camera and are compared with the standard assembly part templates, and the identification detection results are judged. The related equipment setting scheme mainly comprises the following two types:
the first scheme is that a camera is fixed on a fixed beam frame and is collected by adopting a mode of combining the fixed camera with a fixed light source. However, the acquisition method is single, the flexibility is insufficient, the acquisition of more accurate positions cannot be realized, when the shooting position and the angle are not well matched, the inspection of parts with specific angles is difficult to realize, for example, the inspection of parts in an engine compartment is difficult to realize, the compatibility is low, the correspondence of a newly-added vehicle type is difficult, and the correspondence of newly-added hardware is required; the number of cameras is large, so that larger cost waste is caused.
The second scheme is to fix the acquisition camera on the robot hand, and realize flexible attitude and angle acquisition by utilizing the joint movement of the robot. However, this solution also has problems of insufficient installation space and high maintenance and introduction costs.
Disclosure of Invention
The invention mainly aims to provide a dynamic inspection device and a dynamic inspection method for a vehicle sample, and aims to solve the problems that the shooting and acquisition effects of leading-in equipment are deviated, the acquisition amount is small, the acquisition and inspection of more accurate positions cannot be realized and the compatibility is poor.
In order to achieve the above object, the present invention provides a dynamic inspection device for a vehicle sample, comprising:
a drive mechanism comprising a plate link chain movable in a first direction for carrying and transporting a vehicle; the driving mechanism further comprises a detection unit, wherein the detection unit is used for acquiring the position information of the vehicle;
the support comprises a cross beam and vertical beams which are respectively connected with two ends of the cross beam, and one ends of the two vertical beams, which are far away from the cross beam, are connected with the ground; the two vertical beams are respectively positioned at two sides of the plate link chain, and the cross beam is positioned at the top of the plate link chain;
the plurality of image acquisition mechanisms comprise first image acquisition mechanisms and second image acquisition mechanisms, the number of the first image acquisition mechanisms is two, each first image acquisition mechanism is respectively connected with each vertical beam in a one-to-one correspondence manner, the second image acquisition mechanisms are connected with the cross beams, and the image acquisition mechanisms are used for moving and shooting vehicle shi-like images according to the vehicle position information.
Optionally, the image acquisition mechanism includes an image acquisition assembly and a driving assembly, the driving assembly is connected with the vertical beam or the cross beam, an output end of the driving assembly is connected with the image acquisition assembly, and the driving assembly is used for driving the image acquisition assembly to slide along a second direction, or the driving assembly is used for driving the image acquisition assembly to reciprocate in a linear motion along the second direction and a third direction
Optionally, the image acquisition component comprises a cradle head and a detection head, and the cradle head is connected with the output end of the corresponding driving component; the cradle head is connected with the detection head and used for controlling the rotation of the detection head.
Optionally, the detection head is a camera, and the image acquisition assembly further includes light sources separately disposed at two sides of the camera.
Optionally, the dynamic inspection device for the vehicle sample further comprises a darkroom, wherein an opaque material is adopted in the darkroom, the driving mechanism, the support and the image acquisition mechanism are arranged in the darkroom, an inlet and an outlet are formed in two ends of the darkroom along the first direction, and the plate link chain drives the vehicle to move from the inlet to the outlet.
Optionally, two sides of the darkroom entrance are provided with correlation switches, and the correlation switches are used for detecting the position information of the vehicle.
Optionally, the dynamic inspection device for a vehicle sample further comprises two tire detection mechanisms, wherein the two tire detection mechanisms are arranged in the darkroom and are respectively arranged at two sides of the plate link chain.
The invention also provides a dynamic checking method which is used for the dynamic checking device for the vehicle sample and is characterized in that after the checked vehicle moves to the plate link chain, the dynamic checking method comprises the following steps:
the control plate chain moves along a first direction;
acquiring the position of a vehicle to be inspected on a plate link chain in real time;
moving the image acquisition mechanism to the next preset detection position, and adjusting parameters of the image acquisition mechanism to be matched with the preset detection position;
when the vehicle to be inspected moves to a preset detection point, the image acquisition mechanism shoots a vehicle sample image;
and repeating the step of moving the image acquisition mechanism to the next preset detection position until the vehicle to be inspected moves to a preset end point.
Optionally, acquiring vehicle information, acquiring preset detection points according to the vehicle information, and generating a motion track of the image acquisition mechanism according to the moving distance of each preset detection point and the length direction of the vehicle.
Optionally, the step of moving the vehicle to be inspected to the plate link chain comprises: before the step of acquiring the position of the vehicle to be inspected on the plate link chain in real time, the method further comprises the following steps:
judging whether the vehicle reaches a preset starting point or not;
if yes, the position of the vehicle to be checked on the plate link chain is obtained in real time.
The technical scheme of the invention aims to solve the problems that the shooting and collecting effects of the leading-in equipment are deviated, the collection and the inspection of more accurate positions cannot be realized and the compatibility is poor by adopting the dynamic inspection device and the dynamic inspection method for the vehicle sample.
Specifically, after the vehicle moves onto the plate chain, starting dynamic inspection of the vehicle sample, firstly carrying and carrying the vehicle by the plate chain, moving the vehicle from front to back, detecting the specific moving position of the vehicle by the detection unit, and feeding back the real-time position of the vehicle to the image acquisition mechanism; then the image acquisition mechanism moves to the detection position according to the information fed back by the detection unit to shoot, the first image acquisition mechanism is positioned at two sides of the plate link chain and is used for shooting the shi-like images at the left side and the right side when the vehicle moves, and the second image acquisition mechanism is positioned at the top of the plate link chain and is used for shooting the shi-like images at the front side, the rear side and the two sides of the vehicle.
According to the technical scheme, the vehicle sample dynamic checking device is adopted, the image acquisition mechanisms arranged on the cross beam and the vertical beam are used for realizing omnibearing shooting, and the specific moving positions of the vehicle are detected and fed back through the arranged detection units, so that the image acquisition mechanisms are controlled to move for shooting, more accurate image acquisition and checking can be realized, the shooting effect is better, shooting deviation is avoided, and when a vehicle type or hardware is newly added, the image acquisition mechanisms can be controlled to move for shooting through changing or adding feedback points of the detection units, so that the compatibility of the leading-in equipment is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a dynamic inspection device for a vehicle according to an embodiment of the present invention;
FIG. 2 is a top view of an embodiment of a vehicle sample dynamic inspection device according to the present invention;
FIG. 3 is a schematic view showing a first configuration of a bracket and an image acquisition mechanism in the dynamic inspection device for a vehicle of the present invention;
FIG. 4 is a second schematic view of the frame and image acquisition mechanism of the dynamic inspection device for a vehicle according to the present invention;
FIG. 5 is a flow chart of an embodiment of the dynamic inspection method of the present invention;
FIG. 6 is a flow chart of a dynamic inspection method according to another embodiment of the invention.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention mainly aims to provide a dynamic inspection device and a dynamic inspection method for a vehicle sample, and aims to solve the problems that the shooting and collecting effects of leading-in equipment are deviated, the collection and inspection of more accurate positions cannot be realized and the compatibility is poor.
As shown in fig. 1, the first direction is a front-to-back direction; the second direction is from top to bottom; the third direction is a left-to-right direction.
The invention provides a dynamic inspection device for a vehicle sample.
As shown in fig. 1 to 4, in an embodiment of the present invention, a vehicle sample dynamic inspection device 100 includes a stand 2 and a plurality of image acquisition mechanisms 3; the drive mechanism 1 comprises a plate link chain 11 movable in a first direction, the plate link chain 11 being intended to carry and transport a vehicle; the driving mechanism 1 further comprises a detection unit for acquiring position information of the vehicle; the bracket 2 comprises a beam 21 and vertical beams 22 respectively connected with two ends of the beam 21, and one end, far away from the beam 21, of each vertical beam 22 is connected with the ground; two vertical beams 22 are respectively positioned at two sides of the plate link chain 11, and a cross beam 21 is positioned at the top of the plate link chain 11; the plurality of image acquisition mechanisms 3 comprise first image acquisition mechanisms 3a and second image acquisition mechanisms 3b, the number of the first image acquisition mechanisms 3a is two, each first image acquisition mechanism 3a is respectively connected with each vertical beam 22 in a one-to-one correspondence mode, the first image acquisition mechanisms 3a are connected with the cross beams 21, and the image acquisition mechanisms 3 are used for moving according to vehicle position information and shooting vehicle shi-like images.
In an embodiment, after a vehicle moves onto a plate link chain 11, starting a dynamic inspection of a vehicle sample, firstly, the plate link chain 11 carries and carries the vehicle to move from front to back, then a detection unit is used for acquiring a specific moving position of the vehicle, and the real-time position of the vehicle is fed back to a processor and an image acquisition mechanism 3; then the image acquisition mechanism 3 moves to a detection position for shooting according to the vehicle position information fed back by the processor, the first image acquisition mechanism 3a is positioned at two sides of the plate link chain 11 and is used for shooting the sample images of the left side and the right side when the vehicle moves, and the second image acquisition mechanism 3b is positioned at the top of the plate link chain 11 and is used for shooting the sample images of the front side, the rear side, the left side and the right side of the vehicle.
According to the technical scheme, the vehicle sample dynamic inspection device 100 is adopted, the image acquisition mechanisms 3 arranged on the cross beam 21 and the vertical beam 22 are used for realizing omnibearing shooting, and the specific moving positions of the vehicle are detected and fed back through the arranged detection units, so that the image acquisition mechanisms 3 are controlled to move for shooting, more accurate image acquisition and inspection can be realized, the shooting effect is better, shooting deviation is avoided, and when a new vehicle model or a new hardware is added, the image acquisition mechanisms 3 can be controlled to move for shooting through changing or adding the detection positions, so that the compatibility of the imported equipment is improved.
Specifically, the detecting unit may use an encoder or a sensor, and the detecting unit may be disposed in the plate link chain 11 or on both sides of the plate link chain 11 to detect a specific moving position of the vehicle.
As shown in fig. 3, in the first embodiment, in order to be able to flexibly collect an image, more accurate positioning is performed during shooting, and deviation is avoided, the image acquisition mechanism 3 includes an image collection assembly 31 and a driving assembly 32, the driving assembly 32 is connected with the vertical beam 22 or the cross beam 21, an output end of the driving assembly 32 is connected with the image collection assembly 31, the driving assembly 32 is used for driving the image collection assembly 31 to slide along the second direction, or the driving assembly 32 is used for driving the image collection assembly 31 to reciprocate in the second direction and the third direction.
The image acquisition component 31 of the first image acquisition mechanism 3a can slide up and down along the vertical beam 22, so that the height of the image acquisition component 31 can be adjusted according to the requirements of vehicle sample inspection, more accurate positioning is realized, and thus, sample images on the left side and the right side of a vehicle are shot when the vehicle moves, and shooting deviation is avoided; two second image acquisition mechanisms 3b are arranged at intervals along the cross beam 21, and can respectively shoot sample images on the left side and the right side of the vehicle, and the image acquisition assemblies 31 of the second image acquisition mechanisms 3b can reciprocate linearly left and right and reciprocate linearly up and down along the cross beam 21 through the driving assemblies 32, so that the positions of the image acquisition assemblies 31 in the vehicle width direction (namely the left and right directions) can be adjusted firstly according to the requirements of sample inspection of the vehicle, and then the image acquisition assemblies 31 are adjusted to move up and down so as to achieve more accurate shooting positions, thereby flexibly acquiring images and avoiding shooting deviation.
Specifically, the driving component 32 of the second image acquisition mechanism 3b may adopt two linear guide rail modules, the base of the first linear guide rail module is connected with the beam 21, the slide block of the first linear guide rail module is vertically connected with the base of the second linear guide rail module, the slide block of the second linear guide rail module is connected with the image acquisition component 31, the left-right reciprocating linear motion is realized through the first linear guide rail module, and the up-down reciprocating linear motion is realized through the second linear guide rail module, so that the image acquisition component 31 reaches a more accurate shooting position, and the shooting deviation is avoided.
In other embodiments, the driving assembly 32 may also adopt a motor or a cylinder to drive a gear and a rack to realize the reciprocating linear motion, and the kind of the driving assembly 32 is not limited in this embodiment.
Based on the above embodiment, in order to adjust the shooting posture and angle of the image capturing assembly 31, the image capturing assembly 31 includes a cradle head 311 and a detection head 312, and the cradle head 311 is connected with the output end of the corresponding driving assembly; the cradle head 311 is connected with the detection head 312, and the cradle head 311 is used for controlling the rotation of the detection head 312; in the first image acquisition mechanism 3a, a cradle head 311 is slidably connected with the vertical beam 22, a detection head 312 is connected with the cradle head 311, and the detection head 312 can realize up-and-down reciprocating linear motion and rotation through the cradle head 311; in the second image acquisition mechanism 3b, the cradle head 311 is slidably connected with the drive assembly 32, the detection head 312 is connected with the cradle head 311, and the detection head 312 realizes up-and-down reciprocating linear motion, left-and-right reciprocating linear motion and rotation through the drive assembly 32 and the cradle head 311; compared with the fixed camera, the cradle head 311 and the detection head 312 are adopted, the shooting posture and the angle can be adjusted according to the moving position of the vehicle, and the acquisition shooting can be realized at different spatial positions corresponding to different vehicle positions, so that the imaging is close to shooting of sample images at ideal positions and ideal angles to the assembled parts, the flexibility of image acquisition is improved, and the positive clear acquisition of each assembled part to be inspected is realized.
Specifically, in the above embodiment, the cradle head is of an existing structure, the cradle head 311 includes a horizontal motor for driving the detection head 312 to rotate horizontally and a vertical motor for driving the detection head 312 to rotate up and down; when the detection head 312 needs to horizontally rotate to adjust the shooting angle, a horizontal motor can be started; when the detection head 312 is required to rotate up and down to adjust the shooting angle, a vertical motor can be started; when the detection head 312 needs to be moved again to adjust the shooting angle, the horizontal motor and the vertical motor can be started simultaneously, so that the detection head 312 can be adjusted to the ideal position and the ideal angle through horizontal rotation and up-down rotation.
Further, to improve the shooting effect and realize clear shadowless acquisition, the detection head 312 is a camera, and the image acquisition assembly 31 further comprises light sources 313 respectively arranged at two sides of the camera; specifically, the camera can adopt a zoom camera, and compared with a fixed camera, the zoom camera can solve the problem of shooting interval difference caused by different sizes of assembled parts at all positions, and realize the right and clear collection of each assembled part to be inspected; in the traditional scheme, general light sources 313 are uniformly arranged outside equipment, although indiscriminate illumination coverage of a vehicle can be realized, the shooting and acquisition effects are poor in shadow areas such as an engine cabin.
The detection head 312 can specifically adopt an electronic zoom lens to realize automatic focusing of target positions with different intervals, and clear collection is realized.
In the second embodiment, in order to improve the shooting and collecting effect, the vehicle sample dynamic inspection device 100 further includes a darkroom 4, the driving mechanism 1, the bracket 2 and the image acquisition mechanism 3 are all disposed in the darkroom 4, two ends of the darkroom 4 along the first direction form an inlet and an outlet, and the plate link chain 11 drives the vehicle to move from the inlet to the outlet; in the conventional scheme, the dynamic inspection device 100 for the vehicle sample is directly exposed in a factory building, because the sensitivity of machine vision inspection is higher, the change of the external light source 313 can influence the illuminance of picture acquisition, so that the accuracy of the detection result can be influenced.
In this embodiment, the inside of the darkroom 4 is made of a light-proof material, and the light-proof material may be a light-proof film, a light-proof cloth or a black felt.
Further, in order to judge whether a vehicle needs to be subjected to sample-like inspection, two sides of the entrance of the darkroom 4 are provided with correlation switches 5, and the correlation switches 5 are used for detecting the position information of the vehicle; specifically, the correlation switch 5 is used for detecting whether the vehicle is located at the entrance of the darkroom 4, the correlation switch 5 can be used in cooperation with the detection unit, the correlation switch 5 is used for controlling the detection unit to reset, if the correlation switch 5 detects that the vehicle is located at the entrance of the darkroom 4, it indicates that the vehicle needs to be subjected to sample test, the vehicle sample test dynamic test device 100 can be started to work, and the detection unit detects the position information of the vehicle.
Based on the above embodiment, in order to realize the omnibearing inspection of the vehicle, the vehicle sample dynamic inspection device 100 further includes two tire detection mechanisms 6, wherein the number of the tire detection mechanisms 6 is two, and the two tire detection mechanisms 6 are arranged in the darkroom 4 and are respectively arranged at two sides 11 of the plate link chain; specifically, the tire detecting mechanism 6 may include a dome light source and a fixed-focus color camera, and when the tire of the vehicle moves to the position of the tire detecting mechanism 6 during the process that the plate link chain 11 carries and carries the vehicle to move from front to back, the tire of the vehicle can be detected, so as to more comprehensively realize dynamic inspection of the vehicle if the tire of the vehicle meets the detection requirement.
The invention also provides a dynamic checking method, which is used for the vehicle sample dynamic checking device, the specific structure of the vehicle sample dynamic checking device refers to the embodiment, and as the dynamic checking method adopts all the technical schemes of all the embodiments, the dynamic checking method at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted. As shown in fig. 5, after the vehicle to be inspected moves to the plate link chain, the dynamic inspection method includes:
s10, controlling the plate link chain to move along a first direction;
s20, acquiring the position of a vehicle to be inspected on a plate link chain in real time;
s30, moving the image acquisition mechanism to a next preset detection position, and adjusting parameters of the image acquisition mechanism to be matched with the preset detection position;
and acquiring preset detection points according to the vehicle information, wherein each preset detection point of the vehicle is provided with the detection position of the corresponding moving image acquisition mechanism and the camera parameter information. Specifically, the camera parameter information may include camera shooting angle (pan-tilt rotation angle), camera focal length, exposure, aperture setting. Different shooting parameters are set for different detection points, so that the definition of the acquired shi-like image is improved. The driving assembly drives the image acquisition assembly to reach a preset shooting position in advance, and the driving assembly realizes movement control in the second direction and the third direction; at the same time, the cradle head adjusts the shooting angle of the camera, and performs parameter adjustment (zooming) of the lens on the camera, so that the operations are synchronously implemented, and the shooting preparation time can be reduced.
S40, when the vehicle to be inspected moves to a preset detection point, the image acquisition mechanism shoots a vehicle sample image;
s50, repeating the step of moving the image acquisition mechanism to the next preset detection position until the vehicle to be inspected moves to a preset end point.
Specifically, as shown in fig. 5, after the vehicle to be inspected is moved onto the plate link chain 11, the plate link chain 11 is controlled to move from front to back while the plate link chain 11 carries and carries the vehicle to be inspected to move from front to back; at this time, the detection unit on the plate link chain 11 may detect the real-time position information of the vehicle to be inspected and transmit the real-time position information of the vehicle to be inspected to the image acquisition mechanism 3; the image acquisition mechanism 3 moves to the next detection position in advance according to the real-time position information of the vehicle to be detected fed back by the detection unit, and adjusts the shooting angle; when the vehicle to be inspected moves to a preset detection point, the image acquisition mechanism 3 shoots a vehicle shi-like image of the preset detection point; the step of moving the image acquisition mechanism 3 to the next detection position in advance is then repeated until the vehicle to be inspected moves to the preset end point, and all the sample images are shot. And judging whether the false-mounted or missed-mounted parts exist or not by using the acquired vehicle assembly part picture (sample image) and using an AI technology.
The dynamic inspection method is adopted in the technical scheme of the invention, is used for the vehicle sample dynamic inspection device 100, and the image acquisition mechanism 3 is controlled to move to reach the detection position in advance by acquiring the position information of the vehicle on the plate link chain 11 in real time, so that the vehicle sample image is shot.
In the first embodiment, for a vehicle to be detected, vehicle information is also required to be acquired in advance, preset detection points are acquired according to the vehicle information, and a motion track of the image acquisition mechanism 3 is generated according to the moving distance of each preset detection point and the length direction of the vehicle; specifically, before a certain amount of vehicles to be detected is dynamically checked, specific position information of the vehicles to be checked is required to be acquired, detection points are preset for the vehicles according to the specific position information of the vehicles to be checked, and then the moving track of the image acquisition mechanism 3 reaching each detection position is planned according to the preset detection points of the vehicles and the moving distance of the vehicle in the length direction; when the vehicle is dynamically detected, the moving track of the image acquisition mechanism 3 is preset in advance, and the image acquisition mechanism 3 only needs to move to the corresponding detection position according to the information fed back by the detection unit; and when a new vehicle model or new hardware is added, the moving track of the image acquisition mechanism 3 can be changed or added in advance to control the image acquisition mechanism 3 to reach a changed or new detection position, so that the compatibility of the dynamic inspection method is improved.
As shown in fig. 6, based on the above embodiment, the step of moving the vehicle to be inspected to the plate link chain includes: before the step of acquiring the position of the vehicle to be inspected on the plate link chain in real time, the method further comprises the following steps:
step S11, judging whether the vehicle reaches a preset starting point or not;
if yes, the position of the vehicle to be checked on the plate link chain is obtained in real time.
Specifically, the correlation switch 5 is used for detecting whether the vehicle reaches a preset starting point, the correlation switch 5 and the detection unit can be used in cooperation, the correlation switch 5 is used for controlling the detection unit to reset, and if the correlation switch 5 detects that the vehicle reaches the preset starting point, the detection unit resets, and the real-time position of the vehicle to be inspected on the plate link chain 11 is acquired again.
In another embodiment, the dynamic inspection method further comprises detecting the tires for a more comprehensive proof inspection of the vehicle, by providing a tire detecting mechanism 6 for detecting the tires of the moving vehicle.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A dynamic inspection device for a vehicle sample is characterized by comprising
A drive mechanism comprising a plate link chain movable in a first direction for carrying and transporting a vehicle; the driving mechanism further comprises a detection unit, wherein the detection unit is used for acquiring the position information of the vehicle;
the support comprises a cross beam and vertical beams which are respectively connected with two ends of the cross beam, and one ends of the two vertical beams, which are far away from the cross beam, are connected with the ground; the two vertical beams are respectively positioned at two sides of the plate link chain, and the cross beam is positioned at the top of the plate link chain;
the plurality of image acquisition mechanisms comprise first image acquisition mechanisms and second image acquisition mechanisms, the number of the first image acquisition mechanisms is two, each first image acquisition mechanism is respectively connected with each vertical beam in a one-to-one correspondence manner, the second image acquisition mechanisms are connected with the cross beams, and the image acquisition mechanisms are used for moving and shooting vehicle shi-like images according to the vehicle position information.
2. A vehicle sample dynamic inspection device according to claim 1, wherein the image acquisition mechanism comprises an image acquisition assembly and a driving assembly, the driving assembly is connected with the vertical beam or the transverse beam, the output end of the driving assembly is connected with the image acquisition assembly, the driving assembly is used for driving the image acquisition assembly to slide along a second direction, or the driving assembly is used for driving the image acquisition assembly to reciprocate in a linear motion along the second direction and a third direction.
3. The vehicle sample dynamic inspection device according to claim 2, wherein the image acquisition assembly comprises a cradle head and a detection head, the cradle head being connected with the output end of the corresponding driving assembly; the cradle head is connected with the detection head and used for controlling the rotation of the detection head.
4. A vehicle sample dynamic inspection device according to claim 3, wherein the inspection head is a camera and the image acquisition assembly further comprises light sources spaced on either side of the camera.
5. The dynamic vehicle sample inspection device according to claim 1, further comprising a darkroom, wherein the driving mechanism, the bracket and the image acquisition mechanism are all arranged in the darkroom, wherein the darkroom forms an inlet and an outlet along two ends of the first direction, and the plate link chain drives the vehicle to move from the inlet to the outlet.
6. The dynamic inspection device for a vehicle as claimed in claim 5, wherein two sides of the entrance of the darkroom are provided with correlation switches for detecting the position information of the vehicle.
7. The dynamic vehicle sample inspection device according to claim 5, further comprising two tire detection mechanisms, wherein the two tire detection mechanisms are disposed in the darkroom and are disposed separately on both sides of the plate link chain.
8. A dynamic inspection method for a vehicle sample dynamic inspection device according to any one of claims 1 to 7, comprising, after a vehicle to be inspected has moved to a plate link chain:
the control plate chain moves along a first direction;
acquiring the position of a vehicle to be inspected on a plate link chain in real time;
moving the image acquisition mechanism to the next preset detection position, and adjusting parameters of the image acquisition mechanism to be matched with the preset detection position;
when the vehicle to be inspected moves to a preset detection point, the image acquisition mechanism shoots a vehicle sample image;
and repeating the step of moving the image acquisition mechanism to the next preset detection position until the vehicle to be inspected moves to a preset end point.
9. The dynamic inspection method according to claim 8, wherein vehicle information is acquired, preset detection points are acquired based on the vehicle information, and a motion trajectory of the image acquisition mechanism is generated based on a moving distance of each preset detection point from a vehicle length direction.
10. The dynamic inspection method of claim 8, wherein the step of moving the vehicle to be inspected to the plate link chain comprises: before the step of acquiring the position of the vehicle to be inspected on the plate link chain in real time, the method further comprises the following steps:
judging whether the vehicle reaches a preset starting point or not;
if yes, the position of the vehicle to be checked on the plate link chain is obtained in real time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311743609.3A CN117607054A (en) | 2023-12-15 | 2023-12-15 | Dynamic inspection device and dynamic inspection method for vehicle sample |
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| CN202311743609.3A CN117607054A (en) | 2023-12-15 | 2023-12-15 | Dynamic inspection device and dynamic inspection method for vehicle sample |
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