CN113503824A - Vehicle detection system based on machine vision - Google Patents
Vehicle detection system based on machine vision Download PDFInfo
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- CN113503824A CN113503824A CN202110597655.1A CN202110597655A CN113503824A CN 113503824 A CN113503824 A CN 113503824A CN 202110597655 A CN202110597655 A CN 202110597655A CN 113503824 A CN113503824 A CN 113503824A
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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Abstract
The invention relates to the technical field of visual detection, and discloses a vehicle detection system based on machine vision, which comprises a detection platform, an upper computer, a chassis image acquisition device, an engine compartment image acquisition device, a cockpit image acquisition device and a finished vehicle image acquisition device, wherein the chassis image acquisition device, the engine compartment image acquisition device, the cockpit image acquisition device and the finished vehicle image acquisition device are respectively and electrically connected with the upper computer.
Description
Technical Field
The invention relates to the technical field of visual detection, in particular to a vehicle detection system based on machine vision.
Background
At present, the defects of the vehicle are generally found through human eye observation in the traditional vehicle defect detection and evaluation, and the deformation of the vehicle is evaluated by depending on experience.
Disclosure of Invention
The invention mainly aims to provide a vehicle detection system based on machine vision, and aims to solve the technical problems that the existing vehicle detection is large in error and cannot accurately estimate the deformation of a vehicle by evaluating the deformation of the vehicle through experience, so that whether the vehicle is an accident vehicle or not can be accurately identified.
In order to achieve the purpose, the vehicle detection system based on machine vision provided by the invention comprises a detection platform, a chassis image acquisition device and an upper computer, wherein the upper computer is provided with an image processing module and a motion control module, two sides of the detection platform are parallelly provided with a supporting device, the chassis image acquisition device comprises an AGV trolley, a navigation magnetic stripe, a first electric sliding table, a second electric sliding table, a first mounting plate, a CCD area array camera and an annular light source, the navigation magnetic stripe is arranged at the bottom between the two supporting devices in an oval structure, the first electric sliding tables are respectively and vertically arranged at two sides of the rear end wall of the AGV trolley, two ends of the second electric sliding table are respectively connected with the first electric sliding table, the second electric sliding table is driven to slide up and down by the first electric sliding table, the first mounting plate is arranged on the second electric sliding table, the CCD area-array camera is vertically arranged on the first mounting plate, the annular light source is arranged above the CCD area-array camera, the CCD area array camera is driven to slide left and right by the second electric sliding table, a controller, a storage module and a wireless communication module are arranged in the AGV, the front end wall of the AGV trolley is provided with a fine positioning scanning camera, the detection platform is provided with a positioning mark, the fine positioning scanning camera can pass through the upper part of the positioning mark, and identifies the position information on the positioning mark, the first electric sliding table, the second electric sliding table, the CCD area array camera, the storage module and the wireless communication module are respectively and electrically connected with the controller, the upper computer is in wireless communication connection with the AGV, through AGV dolly and navigation magnetic stripe drive CCD area array camera is to berthing at strutting arrangement is last to wait to examine the chassis of vehicle and gather two at least images.
Further comprises an engine cabin image acquisition device, the engine cabin image acquisition device comprises a first mounting frame, a fourth electric sliding table, a fifth electric sliding table, a sixth electric sliding table, a second mounting plate and a CCD area array camera, the first mounting frame is arranged on one side of the detection platform in a zigzag shape, the fourth electric sliding table is arranged on the top of the first mounting frame, one end of the fifth electric sliding table is horizontally and vertically connected with the fourth electric sliding table, the sixth electric sliding table is vertically arranged at one end of the fifth electric sliding table, the second mounting plate is vertically arranged on the sixth electric sliding table, the CCD area-array camera is arranged on the second mounting plate, the fourth electric sliding table, the fifth electric sliding table and the sixth electric sliding table respectively drive the second mounting plate to slide back and forth, left and right and up and down.
Further comprises a cockpit image acquisition device, the cockpit image acquisition device comprises a second mounting rack, a seventh electric sliding table, an eighth electric sliding table, a rotation driving motor, a third mounting plate and a CCD area array camera, the second mounting rack is vertically arranged on one side of the detection platform, the seventh electric sliding table is vertically arranged on the upper end part of the second mounting rack, one end of the eighth electric sliding table is horizontally and vertically arranged on the seventh electric sliding table, the rotary driving motor is arranged on the eighth electric sliding table, one end of the third mounting plate is connected with the rotation driving motor, the CCD area array camera is arranged on the third mounting plate, the seventh electric sliding table, the eighth electric sliding table and the rotation driving motor respectively drive the third mounting plate to slide up and down, left and right and rotate.
Further, still include whole car image acquisition device, whole car image acquisition device includes third mounting bracket and CCD area array camera, the vertical setting of third mounting bracket is in testing platform's one side, the upper end of third mounting bracket is located testing platform's top sets up, CCD area array camera set up in the upper end of third support.
Further, still include laser rangefinder sensor, laser rangefinder sensor set up in the upper end of first mounting panel.
Furthermore, the CCD area-array camera adopts a CMOS industrial CCD area-array camera with 2000 ten thousand pixels, and the resolution ratio of the CCD area-array camera is 0.02 mm.
By adopting the technical scheme of the invention, the invention has the following beneficial effects: according to the technical scheme, the CCD area array camera is used for measuring the hole distances of the automobile chassis and the engine, the deformation degree of the automobile is judged by comparing the hole distances with the standard value, and the method has the advantages of low cost, high precision, simplicity in installation and the like, is simple to operate, convenient to use, high in precision, and has the characteristics of non-contact property, instantaneity, flexibility, accuracy and the like, the problems of the traditional detection method can be effectively solved, the workload of detection personnel is reduced, and the efficiency and the accuracy of automobile detection are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic diagram of an overall structure of a vehicle inspection system based on machine vision according to an embodiment of the present invention;
FIG. 2 is a schematic partial structural diagram of a chassis image capturing device of a vehicle inspection system based on machine vision according to an embodiment of the present invention;
FIG. 3 is another schematic structural diagram of a portion of a chassis image capturing device of a vehicle inspection system based on machine vision according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another part of a chassis image capturing device of a vehicle inspection system based on machine vision according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of an engine room image capturing device of a vehicle inspection system based on machine vision according to an embodiment of the present invention;
FIG. 6 is an enlarged view taken at A in FIG. 5;
FIG. 7 is a schematic structural diagram of a cockpit image acquisition device of a vehicle detection system based on machine vision according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a vehicle image acquisition device of a vehicle detection system based on machine vision according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a vehicle detection system based on machine vision.
As shown in fig. 1 to 8, in an embodiment of the present invention, the vehicle inspection system based on machine vision includes an inspection platform 100, a chassis image capturing device 200, and an upper computer (not shown), the upper computer is provided with an image processing module and a motion control module, two sides of the inspection platform 100 are provided with a supporting device 101 in parallel, the chassis image capturing device 200 includes an AGV cart 201, a navigation magnetic stripe 202, a first electric slide 203, a second electric slide 204, a first mounting plate 205, a CCD area array camera 206, and an annular light source 207, the navigation magnetic stripe 202 is disposed at the bottom between the two supporting devices 101 in an oval structure, the first electric slides 203 are respectively disposed at two sides of a rear end wall of the AGV cart 201 vertically, two ends of the second electric slide 204 are respectively connected with the first electric slide 203, the first electric slide 103 drives the second electric slide 204 to slide up and down, the first mounting plate 205 is arranged on the second electric sliding table 204, the CCD area array camera 206 is vertically arranged on the first mounting plate 205, the annular light source 207 is arranged above the CCD area array camera 206, the CCD area array camera 206 is driven to slide left and right by the second electric sliding table 204, a controller (not shown), a storage module (not shown) and a wireless communication module (not shown) are arranged in the AGV trolley 201, the front end wall of the AGV trolley 201 is provided with a fine positioning scanning camera 208, the detection platform 100 is provided with a positioning mark (not shown), the fine positioning scanning camera 208 can pass above the positioning mark and identify the position information on the positioning mark to complete the accurate positioning, the first electric sliding table 203, the second electric sliding table 204, the CCD area array camera 206, the storage module and the wireless communication module are equally divided into a whole to be electrically connected with the controller, the host computer with AGV dolly 201 wireless communication connection, through AGV dolly 201 and the drive of navigation magnetic stripe 202 CCD area array camera 206 is to berthhing at two at least images are gathered to the chassis of waiting to examine the vehicle on the strutting arrangement 101, and the positional information of the accurate positioner of image processing module accessible obtains the positional relationship of two arbitrary images that CCD area array camera 206 gathered, and calculate the distance between the specified point on the image.
Specifically, still include engine compartment image acquisition device 300, engine compartment image acquisition device 300 includes first mounting bracket 301, fourth electronic slip table 302, fifth electronic slip table 303, sixth electronic slip table 304, second mounting panel 305 and CCD area array camera 306, first mounting bracket 301 is the setting of several font and is in detection platform 100's one side, fourth electronic slip table 203 sets up the top of first mounting bracket 301, the one end of fifth electronic slip table 303 with fourth electronic slip table 302 level is connected perpendicularly, the vertical setting of sixth electronic slip table 304 is in the one end of fifth electronic slip table 303, the vertical setting of second mounting panel 305 is in on sixth electronic slip table 304, CCD area array camera 306 set up in on second mounting panel 305, through fourth electronic slip table 302, fifth electronic slip table 303 and sixth electronic slip table 304 drive respectively around second mounting panel 305, Sliding left and right and up and down.
Specifically, the cockpit image acquisition device 400 further comprises a cockpit image acquisition device 400, the cockpit image acquisition device 400 comprises a second mounting frame 401, a seventh electric sliding table 402, an eighth electric sliding table 403, a rotation driving motor 404, a third mounting plate 405 and a CCD area array camera 406, the second mounting frame 401 is vertically arranged on one side of the detection platform 100, the seventh electric sliding table 402 is vertically arranged at the upper end of the second mounting frame 401, one end of the eighth electric sliding table 403 is horizontally and vertically arranged on the seventh electric sliding table 402, the rotation driving motor 404 is arranged on the eighth electric sliding table 403, one end of the third mounting plate 405 is connected with the rotation driving motor 404, the CCD area array camera 406 is arranged on the third mounting plate 405, and the third mounting plate 405 is driven by the seventh electric sliding table 402, the eighth electric sliding table 403 and the rotation driving motor 404 respectively, Sliding left and right and rotating.
Specifically, still include whole car image acquisition device 500, whole car image acquisition device 500 includes third mounting bracket 501 and CCD area array camera 502, the vertical setting of third mounting bracket 501 is in one side of testing platform 100, the upper end of third mounting bracket 501 is located testing platform 100's top sets up, CCD area array camera 502 set up in the upper end of third support 501.
Specifically, still include laser rangefinder sensor 600, laser rangefinder sensor 600 sets up the upper end of first mounting panel 205 adjusts the height of area array camera through the data that laser rangefinder sensor measured, ensures the accuracy of area array camera focus to guarantee image acquisition's purge degree, effectively improve measuring precision.
Specifically, the CCD area-array camera 206 adopts a CMOS industrial CCD area-array camera with 2000 ten thousand pixels, and the resolution of the CCD area-array camera 206 is 0.02 mm.
During detection of the vehicle, a vehicle to be detected is parked above a detection platform, the hole distance of a vehicle chassis is measured through a chassis image acquisition device, a CCD area-array camera of the chassis image acquisition device carries a camera and a light source to move along the X axis and the Y axis of the bottom of the vehicle through a linear motion module, and primary photographing is carried out on the vehicle chassis to acquire images; after the image acquisition of the automobile chassis is finished, performing secondary image acquisition according to coordinates of preset hole sites to be measured, adjusting the height of the CCD area array camera at the coordinates of each hole site through data measured by a laser ranging sensor, ensuring the accuracy of the focal length of the CCD area array camera, ensuring the cleaning degree of the image acquisition, improving the measurement accuracy, after the secondary image acquisition is finished, transmitting the image data to an upper computer for processing, calculating the corresponding position and the coordinate position of each hole site through a preset software algorithm in the upper computer, outputting a comparison result with standard data in real time, and judging as an automobile accident when the relative position and the coordinate position of each hole site are greater than or less than a factory standard value; measuring the hole distance of the engine by an engine compartment image acquisition device, wherein the detection mode of the engine compartment is the same as that of the chassis; the image acquisition is carried out on an instrument panel and a rear row seat of the vehicle cockpit through a cockpit image acquisition device, and the images are uploaded to an upper computer for storage; and the whole appearance is measured by the whole vehicle image acquisition device to acquire images, the images are uploaded to an upper computer to be stored, and the vehicle change degree is evaluated by a built-in algorithm.
Specifically, according to the technical scheme, the CCD area-array camera is used for measuring the hole distances of the automobile chassis and the engine, the deformation degree of the automobile is judged by comparing the hole distances with a standard value, and the method has the advantages of being low in cost, high in precision, simple and easy to install, simple to operate, convenient to use, high in precision, non-contact, real-time, flexible, accurate and the like, can effectively solve the problems existing in the traditional detection method, reduces the workload of detection personnel, and improves the efficiency and the precision of automobile detection.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A vehicle detection system based on machine vision is characterized by comprising a detection platform, a chassis image acquisition device and an upper computer, wherein the upper computer is provided with an image processing module and a motion control module, two sides of the detection platform are parallelly provided with a supporting device, the chassis image acquisition device comprises an AGV trolley, a navigation magnetic stripe, a first electric sliding table, a second electric sliding table, a first mounting plate, a CCD area array camera and an annular light source, the navigation magnetic stripe is arranged at the bottom between the two supporting devices in an oval structure, the first electric sliding tables are respectively vertically arranged at two sides of the rear end wall of the AGV trolley, two ends of the second electric sliding table are respectively connected with the first electric sliding table, the second electric sliding table is driven by the first electric sliding table to slide up and down, the first mounting plate is arranged on the second electric sliding table, the CCD area-array camera is vertically arranged on the first mounting plate, the annular light source is arranged above the CCD area-array camera, the CCD area array camera is driven to slide left and right by the second electric sliding table, a controller, a storage module and a wireless communication module are arranged in the AGV, the front end wall of the AGV trolley is provided with a fine positioning scanning camera, the detection platform is provided with a positioning mark, the fine positioning scanning camera can pass through the upper part of the positioning mark, and identifies the position information on the positioning mark, the first electric sliding table, the second electric sliding table, the CCD area array camera, the storage module and the wireless communication module are respectively and electrically connected with the controller, the upper computer is in wireless communication connection with the AGV, through AGV dolly and navigation magnetic stripe drive CCD area array camera is to berthing at strutting arrangement is last to wait to examine the chassis of vehicle and gather two at least images.
2. The vehicle detecting system based on machine vision of claim 1, further comprising an engine room image collecting device, wherein the engine room image collecting device comprises a first mounting rack, a fourth electric sliding table, a fifth electric sliding table, a sixth electric sliding table, a second mounting plate and a CCD area array camera, the first mounting rack is arranged on one side of the detecting platform in a shape like a Chinese character 'ji', the fourth electric sliding table is arranged on the top of the first mounting rack, one end of the fifth electric sliding table is horizontally and vertically connected with the fourth electric sliding table, the sixth electric sliding table is vertically arranged at one end of the fifth electric sliding table, the second mounting plate is vertically arranged on the sixth electric sliding table, the CCD area array camera is arranged on the second mounting plate, and the fourth electric sliding table, the fifth electric sliding table and the sixth electric sliding table respectively drive the front and back parts of the second mounting plate, Sliding left and right and up and down.
3. The machine vision-based vehicle detection system of claim 1, further comprising a cockpit image collection device, wherein the cockpit image collection device comprises a second mounting bracket, a seventh electric sliding table, an eighth electric sliding table, a rotary driving motor, a third mounting plate and a CCD area array camera, the second mounting bracket is vertically arranged on one side of the detection platform, the seventh electric sliding table is vertically arranged on the upper end portion of the second mounting bracket, one end of the eighth electric sliding table is horizontally and vertically arranged on the seventh electric sliding table, the rotary driving motor is arranged on the eighth electric sliding table, one end of the third mounting plate is connected with the rotary driving motor, the CCD area array camera is arranged on the third mounting plate, and the seventh electric sliding table, the eighth electric sliding table and the rotary driving motor respectively drive the third mounting plate to move up and down, Sliding left and right and rotating.
4. The vehicle detecting system based on machine vision of claim 1, characterized in that, still include whole car image acquisition device, whole car image acquisition device includes third mounting bracket and CCD area array camera, the vertical setting of third mounting bracket is in testing platform's one side, the upper end of third mounting bracket is located testing platform's top setting, CCD area array camera set up in the upper end of third support.
5. The machine-vision-based vehicle detection system of claim 1, further comprising a laser ranging sensor disposed at an upper end of the first mounting plate.
6. The machine-vision-based vehicle detection system of claim 1, wherein the CCD area-array camera is a CMOS industrial CCD area-array camera with 2000 ten thousand pixels, and the resolution of the CCD area-array camera is 0.02 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110597655.1A CN113503824A (en) | 2021-05-31 | 2021-05-31 | Vehicle detection system based on machine vision |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110597655.1A CN113503824A (en) | 2021-05-31 | 2021-05-31 | Vehicle detection system based on machine vision |
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| CN113503824A true CN113503824A (en) | 2021-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029706A (en) * | 2023-10-10 | 2023-11-10 | 上海荣成汽车装备科技有限公司 | Be used for vehicle chassis quick detection device |
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2021
- 2021-05-31 CN CN202110597655.1A patent/CN113503824A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029706A (en) * | 2023-10-10 | 2023-11-10 | 上海荣成汽车装备科技有限公司 | Be used for vehicle chassis quick detection device |
| CN117029706B (en) * | 2023-10-10 | 2023-12-08 | 上海荣成汽车装备科技有限公司 | Be used for vehicle chassis quick detection device |
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