KR20220109627A - Pre-Delivery Inspection Apparatus - Google Patents

Abstract

The present invention relates to a pre-delivery inspection (PDI) apparatus. The apparatus includes: a housing including a vehicle entrance, a vehicle exit, and a vehicle inspection space located between the vehicle entrance and the vehicle exit; a guide including a round-trip route between a departure point at the vehicle entrance and a destination at the vehicle exit, which is laid via the vehicle inspection space; a combined inspection module comprising a camera module generating a plurality of partial vehicle images by discretely photographing the vehicle in the vehicle inspection space during a transfer procedure of the guide, and a laser scanning module continuously laser-scanning the vehicle in the vehicle inspection space during the transfer procedure of the guide; and a vehicle exterior inspection module analyzing the laser-scanning result to inspect scratches existing on the exterior of the vehicle. Therefore, the present invention is capable of quickly and accurately performing a vehicle exterior inspection.

Description

PDI Inspection Apparatus {Pre-Delivery Inspection Apparatus}

The present invention relates to a PDI (Pre-Delivery Inspection) inspection technology, and to a PDI inspection apparatus capable of quickly and accurately performing a vehicle exterior inspection by photographing and laser scanning the exterior of a vehicle in a vehicle inspection space.

PDI (Pre-Delivery) refers to a pre-inspection of interior/exterior inspection and polishing work before the vehicle is shipped out.

The work at the PDI Center is carried out in five steps: car washing and inspection, maintenance and replacement, polishing, and final inspection. At this time, it is the responsibility of the PDI Center to find defects that may have occurred in the car. When a factory order is received, the PDI process begins, and the car is cleaned first. Remove all plastic wrap from the outside of the car and wash thoroughly with a high-pressure water dispenser. After finishing the primary car wash, spray a mild detergent to remove the sticky residue from the vinyl and then wipe it again under high pressure. After washing the car, it goes through the inspection process. During the inspection process, multiple inspectors are placed around the car to find the parts that are damaged with the naked eye, attach stickers, and write the inspection statement by hand. It was difficult and there was a problem that it was difficult to trust the test results.

In particular, there is a problem in that it is difficult to know exactly whether defects in appearance, such as scratches, found in the process of delivery to the customer after the vehicle is shipped out, before shipment or during the consignment process, so that there is a potential for dispute.

Korea Patent No. 10-0889295 (2009.03.11)

An embodiment of the present invention is to provide a PDI inspection apparatus capable of quickly and accurately performing a vehicle exterior inspection by photographing and laser scanning the exterior of a vehicle in a vehicle inspection space.

An embodiment of the present invention performs a precise vehicle exterior inspection through image generation of a vehicle part in which the non-uniformity or scattering of the laser reflected wave is higher than a specific standard by continuously laser scanning the vehicle in the vehicle inspection space while moving the vehicle inspection space at a specific speed. An object of the present invention is to provide a PDI inspection device that can perform this.

An embodiment of the present invention inspects defects existing on the exterior of the vehicle through laser scanning and analysis of a plurality of vehicle part images taken by a camera, and records the location of the defect in each of a plurality of vehicle part images to be non-correctable after post-mortem. An object of the present invention is to provide a PDI inspection device that can perform inspection.

In embodiments, a Pre-Delivery Inspection (PDI) inspection device includes a housing including a vehicle entrance, a vehicle exit, and a vehicle inspection space between the vehicle entrance and the vehicle exit, the vehicle entrance via the vehicle inspection space. A guide including a reciprocal path between a departure point and a destination at the vehicle exit, a camera module for discretely photographing a vehicle in the vehicle inspection space during a movement process of the guide to generate a plurality of vehicle part images, and movement of the guide A complex inspection module composed of a laser scanning module that continuously laser scans a vehicle in the vehicle inspection space during the process, and a vehicle exterior inspection module that analyzes the laser scanning to inspect defects existing on the exterior of the vehicle.

The guide may be formed in an arch shape so that the composite inspection module can perform image capturing and laser scanning for the front, both sides and rear of the vehicle while moving between the departure and the destination.

The guide is a first guide formed to image and laser scan the front, upper and rear surfaces of the vehicle from the departure point to the destination, and a first guide formed to image and laser scan the seat surface of the vehicle from the departure point to the destination It may include a second guide, and a third guide formed to image and laser scan the right side of the vehicle from the starting point to the destination.

The camera module is arranged so that the corresponding vehicle part images between adjacent stopping points have an overlapping area with each other, and when stopped at one of the plurality of stopping points, calculates the corresponding camera angle toward the center of the vehicle inspection space, and the corresponding camera It may consist of a plurality of cameras that photograph the vehicle from an angle.

The laser scanning module varies the wavelength band of the laser transmission wave to perform laser scanning for the same section a plurality of times, calculates the angle of the laser transmission wave toward the center of the vehicle inspection space, and calculates the angle of the laser transmission wave from the angle of the laser transmission wave. Vehicles can be laser scanned.

The laser scanning module detects non-uniformity and scattering of the laser reflected wave, and when the non-uniformity or scattering is greater than or equal to a specific standard, generates a corresponding vehicle part image to perform a relatively precise vehicle exterior inspection.

The complex inspection module may perform a relatively precise vehicle exterior inspection by enlarging the image of the vehicle part through the camera module when a defect of the vehicle is detected in a specific vehicle part image or non-uniformity and scattering of the laser reflected wave are detected. .

When the specific vehicle image is enlarged, the complex inspection module may generate the specific vehicle image with illumination of a different wavelength band for the vehicle.

The disclosed technology may have the following effects. However, this does not mean that a specific embodiment should include all of the following effects or only the following effects, so the scope of the disclosed technology should not be construed as being limited thereby.

The PDI inspection apparatus according to an embodiment of the present invention can quickly and accurately perform a vehicle exterior inspection by photographing and laser scanning the exterior of a vehicle in a vehicle inspection space.

The PDI inspection apparatus according to an embodiment of the present invention continuously laser scans the vehicle in the vehicle inspection space while moving the vehicle inspection space at a specific speed, thereby generating an image of the part of the vehicle in which the non-uniformity or scattering of the laser reflected wave is higher than a specific standard. Precise vehicle exterior inspection can be performed.

The PDI inspection apparatus according to an embodiment of the present invention inspects defects existing on the exterior of a vehicle through laser scanning and analysis of a plurality of vehicle part images taken by a camera, and corrects the location of the defect in each of the plurality of vehicle part images Impossible to record so that a follow-up check can be performed.

1 is a view for explaining a PDI inspection system according to the present invention.
FIG. 2 is a view for explaining a system configuration of the PDI inspection apparatus of FIG. 1 .
FIG. 3 is a view for explaining an essential configuration of the PDI inspection apparatus of FIG. 1 .
FIG. 4 is a view for explaining the arrangement structure of the complex inspection module in FIG. 3 .
5 is a flowchart illustrating a PDI inspection process according to an embodiment of the present invention.

Since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment is capable of various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

On the other hand, the meaning of the terms described in the present application should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component.

When a component is referred to as being “connected” to another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. On the other hand, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the embodied feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

Identifiers (eg, a, b, c, etc.) in each step are used for convenience of description, and the identification code does not describe the order of each step, and each step clearly indicates a specific order in context. Unless otherwise specified, it may occur in a different order from the specified order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

The present invention can be embodied as computer-readable codes on a computer-readable recording medium, and the computer-readable recording medium includes all types of recording devices in which data readable by a computer system is stored. . Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like. In addition, the computer-readable recording medium may be distributed in a network-connected computer system, and the computer-readable code may be stored and executed in a distributed manner.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present application.

1 is a view for explaining a PDI (Pre-Delivery Inspection) inspection system according to the present invention.

Referring to FIG. 1 , the PDI inspection system 100 may include a vehicle 110 , a PDI inspection apparatus 130 , and a database 150 .

The vehicle 110 is a transportation means for transporting passengers or cargo using power produced by an engine, and may correspond to a vehicle as a representative example. Here, the vehicle 110 may correspond to an inspection target before transporting the finished vehicle produced in the automobile manufacturing plant to the shipping center using the TP transport equipment or delivering it to the customer.

The PDI inspection apparatus 130 may correspond to a computing device capable of performing a Pre-Delivery Inspection (PDI) inspection for defects on the exterior of the vehicle 110 and generating and providing inspection results. The PDI inspection apparatus 130 may inspect defects existing on the exterior of the vehicle 110 . Here, the PDI inspection device 130 inspects the assembly state of the vehicle exterior to check whether there is a step in the seam, whether the uniformity of the gap is constant, and whether the balance of the vehicle exterior is correct, and whether the painted surface is uneven or may be Scratches and scratches on the glass can be checked.

In addition, the PDI inspection apparatus 130 may be implemented by including various sensors necessary for the exterior inspection of the vehicle 110 . For example, the PDI inspection apparatus 130 may be implemented including a laser scan sensor, a camera sensor, an illumination sensor, and the like.

In an embodiment, the PDI inspection apparatus 130 may be implemented in a form that is fixedly installed on the ground, or may be implemented in a form that is movable so that the position can be freely changed during the inspection process. On the other hand, when the vehicle 110 is placed in a fixed place, the PDI inspection apparatus 130 can be operated as a component of a process of sequentially or simultaneously performing inspections on various items according to a series of inspection scenarios. and the results can be integrated and provided. Here, the PDI inspection device 130 may provide a vehicle inspection space in the form of a housing, and when the vehicle 110 enters the vehicle inspection space, the vehicle 110 moves with respect to the vehicle 110 located in the vehicle inspection space. can be discretely photographed to generate a plurality of vehicle part images, and the vehicle 110 is continuously laser scanned to perform a complex analysis of the laser scanning and captured images to perform an exterior defect inspection of the vehicle 110 . have.

In addition, the PDI inspection apparatus 130 may be implemented including the database 150 , and may be implemented independently of the database 150 . When implemented independently of the database 150 , the PDI inspection apparatus 130 may be connected to the database 150 by wire or wirelessly to exchange data.

The database 150 may store various pieces of information necessary for the PDI inspection regarding the exterior of the vehicle 110 . The database 150 may store information about the vehicle 110 and the exterior, and may store information about inspection rules and conditions for exterior PDI inspection, but is not necessarily limited thereto, and exterior PDI inspection of the vehicle 110 . information collected or processed in various forms in the process of performing

FIG. 2 is a view for explaining a system configuration of the PDI inspection apparatus of FIG. 1 .

Referring to FIG. 2 , the PDI test apparatus 130 may be implemented including a processor 210 , a memory 230 , a user input/output unit 250 , and a network input/output unit 270 .

The processor 210 may execute a procedure for processing each step in the process in which the PDI test apparatus 130 operates, and manage the memory 230 read or written throughout the process, and the memory 230 ) can schedule the synchronization time between volatile and nonvolatile memory in The processor 210 may control the overall operation of the PDI test apparatus 130 , and is electrically connected to the memory 230 , the user input/output unit 250 , and the network input/output unit 270 to control the data flow therebetween. can The processor 210 may be implemented as a central processing unit (CPU) of the PDI inspection apparatus 130 .

The memory 230 is implemented as a non-volatile memory, such as a solid state drive (SSD) or a hard disk drive (HDD), and may include an auxiliary storage device used to store overall data required for the PDI test device 130, It may include a main memory implemented as a volatile memory such as random access memory (RAM).

The user input/output unit 250 may include an environment for receiving a user input and an environment for outputting specific information to the user. For example, the user input/output unit 250 may include an input device including an adapter such as a touch pad, a touch screen, an on-screen keyboard, or a pointing device, and an output device including an adapter such as a monitor or a touch screen. In an embodiment, the user input/output unit 250 may correspond to a computing device connected through a remote connection, and in such a case, the PDI test device 130 may be performed as a server.

The network input/output unit 270 includes an environment for connecting with an external device or system through a network, for example, a local area network (LAN), a metropolitan area network (MAN), a wide area network (WAN), and a VAN (Wide Area Network) (VAN). It may include an adapter for communication such as Value Added Network).

FIG. 3 is a view for explaining an essential configuration of the PDI inspection apparatus of FIG. 1 .

Referring to FIG. 3 , the PDI inspection device 130 may include a housing 310 , a guide 330 , a composite inspection module 350 , a vehicle exterior inspection module 370 , and a control module (not shown in the drawing). have.

The housing 310 may include a vehicle entrance, a vehicle exit, and a vehicle inspection space between the vehicle entrance and the vehicle exit. The vehicle inspection space may correspond to a space in which the PDI inspection regarding the exterior of the vehicle 110 is performed. In one embodiment, the housing 310 has a predetermined length, width, and height, and may be implemented in a structure in which the vehicle 110 enters and exits sequentially. Here, the housing 310 may form a vehicle inspection space by securing an extra space of a predetermined length or more between the vehicle entrance and the vehicle exit. The housing 310 may separately include an inlet and an outlet so that the vehicle does not interfere with the entry and exit of the vehicle.

The guide 330 may include a round-trip route between the departure point Sp at the vehicle entrance and the destination Dp at the vehicle exit via the vehicle inspection space. In one embodiment, the guide 330 performs imaging and laser scanning of the front and rear, both sides and upper surfaces of the vehicle 110 while the complex inspection module 350 moves between the departure point Sp and the destination Dp. It may be formed in an arch shape so that The complex inspection module 350 may be installed in the guide 330 . At this time, when the guide 330 is of the fixed type, the composite inspection module 350 may be moved along the guide 330 , and when the guide 330 is of the movable type, the composite inspection module 350 is the guide 330 . can be fixedly placed on the

The guide 330 is a first guide 331 formed to image and laser scan the front, upper and rear surfaces of the vehicle 110 from the departure point Sp to the destination Dp, from the departure point Sp to the destination (Dp). A second guide 333 formed to image and laser scan the left surface of the vehicle 110 to A guide 335 may be included. Here, the second and third guides 333 and 335 may be disposed to face each other. In one embodiment, the guide 330 is formed as a single unit in which the second guide 333 and the third guide 335 are respectively connected to both sides around the first guide 331 or the first guide 331 is formed. The second guide 333 and the third guide 335 may be independently disposed on both sides of the center. When the guide 330 is movable, it may include a moving member 337 capable of reciprocating along a reciprocating path between the departure point Sp and the destination Dp. Here, the moving member 337 may be configured to form a guide groove on the ground of the vehicle inspection space and to receive power from a motor to move the guide 330 along the guide groove. The configuration of the moving member 337 is not limited thereto. When the guide 330 is a fixed type, the first to third guides 331 , 333 , 335 may be configured in the form of a moving rail, and the composite inspection module 350 may be configured to move along the moving rail by the power of a motor.

The complex inspection module 350 may include a camera module 351 and a laser scanning module 353 . In one embodiment, the complex inspection module 350 is to inspect the defects of the vehicle by using a plurality of vehicle part images generated by shooting through the camera module 351 and laser scanning of the laser scanning module 353 in combination. can

The camera module 351 may generate a plurality of vehicle part images by discretely photographing the vehicle 110 in the vehicle inspection space during the movement process of the guide 330 . In an embodiment, the camera module 350 may generate a plurality of vehicle part images by photographing in a specific direction of the vehicle inspection space at each of the plurality of stop points during the movement process of the guide 330 . Here, in the camera module 351 , a plurality of cameras are disposed on the arch-shaped guide 330 at regular intervals to move along the guide 330 . The camera module 351 may generate a plurality of vehicle part images by photographing the front, rear, side, and upper surfaces of the vehicle 110 in the vehicle inspection space while moving between the departure point Sp and the destination Dp.

In one embodiment, the camera module 351 is disposed so that the corresponding vehicle part images between adjacent stopping points have overlapping areas with each other, and when stopped at one of the plurality of stopping points, the corresponding camera angle toward the center of the vehicle inspection space It may be composed of a plurality of cameras that calculate and photograph a vehicle from a corresponding camera angle. Here, the camera module 351 may photograph the vehicle 110 in the vehicle inspection space while the guide 330 is stopped for a predetermined time at a plurality of predetermined stopping points on the reciprocating path in the course of movement of the guide 330 .

The camera module 351 may generate a plurality of vehicle part images by photographing the vehicle 110 at corresponding positions of the front, top, rear and both sides of the vehicle 110 in the vehicle inspection space for each of the plurality of stopping points. .

The laser scanning module 353 may continuously laser scan the vehicle 110 in the vehicle inspection space during the movement process of the guide 330 . In one embodiment, the laser scanning module 353 provides a laser transmission wave to a specific section in a specific direction of the vehicle inspection space while moving at a specific speed in the guide 330 and receives the laser reflected wave for the specific section to receive the vehicle ( 110) can be laser scanned. Here, the laser scanning module 353 may vary the wavelength band of the laser transmission wave to perform laser scanning for the same section a plurality of times.

The laser scanning module 353 may calculate the angle of the corresponding laser transmission wave toward the center of the vehicle inspection space, and may laser scan the vehicle 110 at the angle of the laser transmission wave. In one embodiment, the laser scanning module 353 transmits a laser to the vehicle 110 in the vehicle inspection space at regular intervals and then receives the laser reflected from the vehicle 110 as a set of points distributed on the coordinates. An exterior shape of the vehicle 110 may be generated. Here, the laser scanning module 353 laser scans the vehicle 110 at the positions of the front, top, rear and both sides of the vehicle 110 in the vehicle inspection space, and varies the wavelength band of the laser transmission wave for the section. By performing laser scanning a plurality of times, it is possible to obtain all exterior information of the vehicle 110 without a section that is not scanned. The laser scanning module 353 may acquire various information, such as the location and size of defects in the vehicle 110 by varying the wavelength band of the laser transmission wave. For example, when the laser transmission wave is propagated on the exterior surface of the vehicle 110 , the wavelength is changed in the region where corrosion and delamination occur.

The complex inspection module 350 detects the non-uniformity and scattering of the laser reflected wave from the laser scanning module 353, and when the non-uniformity or scattering is greater than a specific standard, the camera module 351 generates an image of the vehicle part to inspect a relatively precise vehicle exterior. can be performed. The region in which the defect occurs has a characteristic in which the frequency and amplitude appear as large values. Here, the complex inspection module 350 detects a defect of the vehicle 110 in a specific vehicle part image generated by shooting by the camera module 351 or when non-uniformity or scattering of the laser reflected wave is detected by the laser scanning module 353 . It is possible to generate an enlarged image by magnifying the image of the corresponding vehicle part through the camera module 351, and through this, even fine defects present on the exterior of the vehicle 110 are greatly enlarged and easily found, and the relative size and location can be identified. When a specific vehicle image is enlarged by the camera module 351 , the complex inspection module 350 may generate a specific vehicle image with illumination of a different wavelength band for the vehicle 110 . To this end, the complex inspection module 350 may include a lighting member capable of providing illumination to the vehicle 110 in the vehicle inspection space within the housing 310 .

When the vehicle 110 enters the vehicle inspection space, the lighting member may provide spot lighting for the vehicle 110 around the vehicle inspection space while varying the color temperature. The lighting member may include a plurality of LEDs (Light Emitting Diodes) disposed on the upper portion of the vehicle 110 to provide illumination toward the center of the vehicle inspection space. Here, the plurality of LEDs may be arranged in an arch shape along the guide 330 or may be fixedly installed on the ceiling of the housing 310 . When a plurality of LEDs are disposed on the guide 330 , the lighting angle may be adjusted according to the camera angle. When a plurality of LEDs are fixedly installed on the ceiling of the housing 310, the lighting angle may be adjusted to provide lighting toward the center of the vehicle inspection space. The lighting member may provide illumination to the vehicle 110 while changing the color temperature to generate a specific vehicle image with illumination of a different wavelength band for the vehicle 110 in the process of enlarging the specific vehicle image through the camera module 351. . In one embodiment, the lighting member may change the color temperature of the plurality of LEDs in stages from the first reference temperature to the second reference temperature according to the image enlargement stage of the camera module 351 . The lighting member may adjust the color temperature change range of the LED lighting in consideration of the color of the vehicle 110 . When the color temperature of the LED light is changed, the ratio of the wavelengths incident on the vehicle 110 is changed, thereby affecting color vision. Accordingly, the lighting member may have a suitable color temperature for each color of the vehicle 110 and a variable range of the color temperature so that color visibility in the vehicle inspection space may be well displayed.

The vehicle exterior inspection module 370 may analyze the laser scanning to inspect defects existing on the exterior of the vehicle. In one embodiment, when the presence of a defect is detected, the vehicle exterior inspection module 370 may record the position of the defect in the image of the corresponding vehicle part in an uncorrectable way and store it in the vehicle inspection database. Here, the vehicle inspection database may be implemented by being included in the vehicle exterior inspection module 370 , and may be implemented as an independent database 150 if necessary.

In an embodiment, the vehicle exterior inspection module 370 may perform an exterior inspection of the vehicle 110 that has entered the vehicle inspection space. Here, the vehicle exterior inspection module 370 may inspect exterior defects such as scratches, cracks, broken marks, scratches, and discoloration of the exterior of the vehicle 110 . The vehicle exterior inspection module 370 moves at a specific speed in the guide 330 while capturing an image and laser scanning for the vehicle 110 through the camera module 351 and the laser scanning module 353 of the complex inspection module 350 . It is possible to accurately and quickly inspect where any defects exist on the exterior of the vehicle 110 by performing the .

The vehicle exterior inspection module 370 may store information of the vehicle 110 together when storing the image of a specific vehicle part in which the presence of defects is detected in the vehicle inspection database. The vehicle exterior inspection module 370 may perform a post-inspection based on vehicle information and a plurality of vehicle part images stored in the vehicle inspection database.

The control module may control the overall operation of the PDI inspection apparatus 130 , and manage a control flow or data flow between the guide 330 , the complex inspection module 350 , and the vehicle exterior inspection module 350 .

FIG. 4 is a view for explaining the arrangement structure of the complex inspection module in FIG. 3 .

Referring to FIG. 4 , the complex inspection module 350 may include a camera module 351 including a plurality of cameras 351a to 350g and a laser scanning module 353 .

The camera module 351 is arranged in an arcuate shape along the shape of the guide 330 so that the plurality of cameras 351a to 351g have an overlap area between the physically adjacent cameras to photograph the corresponding vehicle part in the designated shooting area. A plurality of vehicle part images may be generated. Here, the plurality of cameras (351a to 351g) may be arranged so that the photographing angle faces the center of the vehicle inspection space.

The laser scanning module 353 is configured to move at a specific speed in the guide 330 . Here, the laser scanning module 353 may continuously perform laser scanning on the front, rear, both, and upper surfaces of the vehicle 110 while reciprocating along the guide 330 . The laser scanning module 353 transmits a laser of a specific wavelength to the vehicle 110 in the vehicle inspection space and receives the reflected laser to acquire shape information required to inspect the exterior defects of the vehicle 110 . The laser scanning module 353 may vary the wavelength band of the laser transmission wave to perform laser scanning for the same section a plurality of times. The scan range and the number of scans of the laser scanning module 350 can be arbitrarily set by the examiner. The laser scanning module 353 may detect the non-uniformity and scattering of the laser reflected wave by laser scanning the vehicle at the angle of the laser transmitted wave and measuring the angle of the laser reflected wave compared to the angle of the laser transmitted wave and the arrival time of the laser reflected wave.

The complex inspection module 350 may operate to perform a vehicle exterior inspection using a combination of image capturing through the camera module 351 and laser scanning through the laser scanning module 353 . The complex inspection module 350 analyzes a plurality of vehicle part images in the exterior inspection module 370 of the vehicle and analyzes a plurality of vehicle part images to detect defects in the exterior or analyzes laser scanning to analyze the laser scanning to determine if the non-uniformity or scattering of the laser reflected waves is greater than or equal to a specific standard, the camera module Through 351, the image of the corresponding vehicle part may be enlarged to operate to perform a relatively precise vehicle exterior inspection. In an embodiment, the camera module 351 may enlarge the plurality of vehicle part images in stages so that the size of an overlap region between physically adjacent cameras is reduced. In this case, the camera module 351 may stop the enlargement of the vehicle part image when the size of the overlap area does not exist while the enlargement is in progress. Here, the camera module 351 may search for overlapping areas in a plurality of photographed images captured by cameras disposed at physically adjacent positions, and may enlarge and adjust the magnification so that there is no overlapping area. In an embodiment, the camera module 351 may extract a plurality of feature points from each of a plurality of photographed images and determine points corresponding to each other from among the extracted feature points as a corresponding pair to search for an overlap area.

When a specific vehicle image is enlarged through the camera module 351 , the plurality of inspection module 350 may generate a specific vehicle image with illumination of a different wavelength band for the vehicle 110 , and provide this to the vehicle exterior inspection module 370 . can do.

5 is a flowchart illustrating a PDI inspection process according to an embodiment of the present invention.

Referring to FIG. 5 , when the vehicle to be inspected 110 enters the vehicle inspection space through the vehicle entrance of the housing 310 , the PDI inspection apparatus 130 includes the camera module 351 and laser scanning of the complex inspection module 350 . The module 353 may discretely photograph the vehicle 110 in the vehicle inspection space during the movement process of the guide 330 and continuously perform laser scanning (step S510). In addition, the PDI inspection apparatus 130 may analyze a plurality of vehicle part images and laser scanning through the vehicle exterior inspection module 370 to inspect defects existing on the exterior of the vehicle 110 (step S520 ).

In addition, when a defect of the vehicle 110 is detected in a specific vehicle part image or non-uniformity or scattering of the laser reflected wave is detected, the PDI inspection apparatus 130 enlarges the image of the vehicle part through the camera module 351 to provide a relatively precise vehicle. An appearance inspection may be performed (step S530). In addition, when the presence of a defect is detected through the vehicle exterior inspection module 370, the PDI inspection apparatus 130 records the position of the defect in each of a plurality of vehicle part images to be non-correctable and can be stored in the vehicle inspection database. (Step S540).

In one embodiment, the PDI inspection device 130 movably arranges a camera module and a laser scanning module on a guide formed in an arcuate shape in the vehicle inspection space, so that the images on the front and rear, upper and both sides of the vehicle in the vehicle inspection space Acquire shape information about the exterior of the vehicle without blind spots by shooting and laser scanning, and perform a precise vehicle exterior inspection by magnifying the image for flaws. It can be recorded and stored in the vehicle inspection database to perform post-inspection on the exterior of the vehicle.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it can be done.

100: PDI inspection system
110: vehicle 130: PDI inspection device
150: database
210: processor 230: memory
250: user input/output unit 270: network input/output unit
310: housing 330: guide
331: first guide 333: second guide
335: third guide 337: movable member
350: complex inspection module 351: camera module
351a~351g: multiple cameras 353: laser scanning module
370: vehicle exterior inspection module
Sp: origin Dp: destination

Claims (8)

a housing including a vehicle entrance, a vehicle exit, and a vehicle inspection space between the vehicle entrance and the vehicle exit;
a guide including a round-trip route between a departure point at the vehicle entrance and a destination point at the vehicle exit via the vehicle inspection space;
A camera module for generating a plurality of vehicle part images by discretely photographing a vehicle in the vehicle inspection space during the movement process of the guide, and a laser for continuously laser scanning a vehicle in the vehicle inspection space during the movement process of the guide a complex inspection module consisting of a scanning module; and
A PDI (Pre-Delivery Inspection) inspection device comprising a vehicle exterior inspection module that analyzes the laser scanning to inspect defects existing on the exterior of the vehicle.
According to claim 1, wherein the guide
PDI inspection apparatus, characterized in that the composite inspection module is formed in an arch shape so as to perform imaging and laser scanning for the front, both sides and rear of the vehicle while moving between the departure and the destination.
The method of claim 2, wherein the guide
a first guide formed to image and laser scan the front, upper and rear surfaces of the vehicle from the departure point to the destination location;
a second guide formed to image and laser scan the seat surface of the vehicle from the departure point to the destination; and
and a third guide formed to image and laser scan the right side of the vehicle from the departure point to the destination location.
According to claim 1, wherein the camera module
When the corresponding vehicle part images between adjacent stopping points are arranged to have an overlapping area with each other and stopped at one of a plurality of stopping points, a corresponding camera angle toward the center of the vehicle inspection space is calculated, and the vehicle at the corresponding camera angle is calculated. PDI inspection apparatus, characterized in that it is composed of a plurality of cameras for photographing.
According to claim 1, wherein the laser scanning module is
By varying the wavelength band of the laser transmission wave, performing laser scanning for the same section a plurality of times, calculating the angle of the corresponding laser transmission wave toward the center of the vehicle inspection space, and laser scanning the vehicle at the angle of the corresponding laser transmission wave PDI inspection device, characterized in that.
According to claim 1, wherein the laser scanning module is
A PDI inspection apparatus, characterized in that by detecting the non-uniformity and scattering of the laser reflected wave, and generating a corresponding vehicle part image if the non-uniformity or scattering is greater than a specific standard, a relatively precise vehicle exterior inspection is performed.
According to claim 1, wherein the complex inspection module is
When a defect of the vehicle is detected in a specific vehicle part image or non-uniformity and scattering of the laser reflected wave are detected, the PDI inspection apparatus characterized in that a relatively precise vehicle exterior inspection is performed by enlarging the corresponding vehicle part image through the camera module .
According to claim 1, wherein the complex inspection module is
When the specific vehicle image is enlarged, the PDI inspection apparatus, characterized in that for generating the specific vehicle image with illumination of a different wavelength band for the vehicle.

Images