WO2018147478A1

WO2018147478A1 - Device and method for testing terminal crimping of wire harness cable by utilizing machine vision, and method for operating same

Info

Publication number: WO2018147478A1
Application number: PCT/KR2017/001412
Authority: WO
Inventors: 이규호; 홍승우
Original assignee: 인제대학교 산학협력단
Priority date: 2017-02-08
Filing date: 2017-02-09
Publication date: 2018-08-16

Abstract

The present invention relates to a device for testing terminal crimping of a wire harness cable by utilizing machine vision, the device comprising: a fixing unit (100) for fixing a wire harness; a photographing unit (200), which is installed on the top of the fixing unit (100), for photographing the wire harness; and a computation processing unit (300) which receives data photographed by the photographing unit (200) and determines whether or not there is a defect in the wire harness. The present invention utilizes machine vision and thus is configured with test functions such as flat panel display (FPD) test and PCB test, thereby having a remarkable effect of reducing a product defect in a wire harness, which is a product to be shipped, through test automation.

Description

Terminal Crimping Inspection Device and Inspection Method of Wire Harness Cable Using Machine Vision and Its Operation Method

The present invention relates to a terminal crimping inspection device and an inspection method of the wire harness cable using a machine vision and a method of operating the same, and more particularly, a fixing part for fixing the wire harness, and a wire installed on the fixing part. Terminal crimping inspection device and inspection method for a wire harness cable using a machine vision comprising a photographing unit for photographing the harness and a calculation processing unit for determining whether the wire harness is defective by receiving the data photographed by the photographing unit and its operation It is about a method.

In general, Hi-Wrap (TA-SC) cable used in harness assembly has technical difficulty of terminal crimping compared to general twisted pair cable, and defect variation by product is relatively high according to the skill of operator.

In general, the inspection process of the harness assembly company is to check the terminal crimping through visual inspection by using a magnifying glass.

Therefore, it is necessary to develop automated terminal crimping inspection equipment for product quality homeostasis and inspection efficiency because product inspection time and inspection accuracy are determined according to inspector's skill and inspection environment.

According to the inspection method and apparatus of the harness cable for electronic devices of the prior art Patent No. 10-1237292, both terminal terminals (110, 120) of the harness cable 100 mounted on the cable fixing substrate 200 The test connector pins 111 and 121 are individually connected to each other, and one of them is connected to the DAC pulse signal input device 10 for inputting a test pulse signal of a constant frequency to the harness cable 100, and the opposite side is connected. The other is connected to the ADC pulse signal receiver 20 is received by changing the pulse signal passed through the harness cable 100 digitally, between the DAC pulse signal input unit 10 and the ADC pulse signal receiver 20 In comparison, the signal input to the harness cable 100 and the signal passing through the harness cable 105 is analyzed to detect the difference, and then based on this, a fire that determines whether it is "normal" or "bad". The controller 30 for determining whether there is a quantity, but the cable fixing substrate 200 in which at least one harness cable 100 including the

terminal terminals

110 and 120 is set, is presently present in the harness cable 100. An apparatus for inspecting a harness assembly cable is further disclosed, which further includes a vibration generator 40 which is a mechanical vibration imparting means that can artificially derive the direct defects and potential defects that may appear in the future. .

According to another prior art wire harness inspection device of the Utility Model Publication No. 20-0448424, a wire harness inspection device that can be universally connected to all the measuring equipment 22 in order to inspect the defective wire harness manufactured In the pattern forming the terminal connecting portion 77 for connecting with the connecting terminal 76 of the ribbon cable 75 connected to the measuring equipment 22 and the upper surface of the pattern 86 connected to the terminal connecting portion 77 A main PCB (20) formed thereon; The left and right sub PCBs 16, which are connected to the main PCB 20 so as to be electrically connected to each other, and have an input terminal 83 and an output terminal 84 for connecting the input side and the output side of the wire harness on a circuit. 17); A copper plate 12 which weakens the static electricity generated by being integrally fastened to the bottom of the main PCB 20; A wire harness inspection apparatus is disclosed which includes a fixing panel 58 fixedly installed at the bottom of the copper plate 12.

However, the prior art as described above had a disadvantage in that the accuracy of product defect detection of the shipped wire harness is low.

Therefore, the present invention has been devised to solve the above problems, and since it utilizes machine vision, inspection functions such as FPD (Flat Panel Display) inspection and PCB inspection are configured, and product defects of the wire harness, which is a shipped product through inspection automation, are provided. The aim is to provide a terminal crimping inspection device for wire harness cables that utilizes machine vision to improve detection accuracy.

The present invention relates to a terminal crimping inspection device for a wire harness cable using a machine vision, the fixing portion 100 for fixing the wire harness, and the upper portion of the fixing portion 100 is photographed to shoot the wire harness The unit 200 and the operation processing unit 300 is configured to determine whether the wire harness is defective by receiving the data photographed by the photographing unit 200.

Therefore, since the present invention utilizes machine vision, inspection functions such as a flat panel display (FPD) inspection and a PCB inspection are configured, and there is a remarkable effect of increasing the accuracy of product defect detection of a wire harness, which is a shipped product, through inspection automation. .

1 is a picture of the terminal crimping inspection device of the wire harness cable utilizing the machine vision of the present invention.

Figure 2 is an enlarged photograph of the present invention.

3 and 4 are enlarged pictures of the present invention fixing part.

5 is a photograph of the present invention processing unit.

Figure 6 is a photo display of the present invention.

7 is a photograph of the present invention wire harness.

Figure 8 is a partial photograph of the present invention feature extraction.

9 is a photograph comparing the rotation and movement of the extracted image of the present invention.

10 is a left borderline photograph of the terminal barrel portion of the present invention.

Figure 11 is a photograph pattern recognition based algorithm for distance measurement of the present invention.

12 is a right border photograph of the terminal barrel portion of the present invention.

Figure 13 is a photograph pattern recognition algorithm for distance measurement of the present invention.

14 is a photograph showing a zoning state of the labeling algorithm of the present invention.

15 and 16 are photographs showing the line setting for determining whether there is a defect in the inner city of the present invention.

17 is a partially enlarged view showing the present invention fine adjustment unit.

18 is a cross-sectional view showing a coupling relationship between the gear and the handle of the present invention fine adjustment unit.

100: fixed part 110: support frame

120: guide frame 121: lower plate

122: linear guide 123: ball screw

124 handle

130: horizontal movement plate

200: recording unit 210: vertical frame

220: vertical movement plate 221: vertical guide frame

221-1: guide rail

222: moving member 223: horizontal guide frame

224: fixed frame

230: Recording device

231: camera 232: lens

233: lighting

240: lighting fixing frame 241: first fixing stand

242: second station 243: third station

244: lighting fixture

250: fixing member

260: roller magnet 261: magnet case

262: cylindrical magnet

270: fine adjustment unit 271: upper fine adjustment frame

272: lower fine adjustment frame 273: roller

274: gear 274-1: space

274-2: Fixing groove

275 handle 275-1 fixed bundle

275-2: Fixing protrusion

300: arithmetic processing unit

400: trigger

In addition, the fixing part 100 is provided on the support frame 110, the guide frame 120 is installed on the upper portion of the support frame 110, and the upper portion of the guide frame 120 is moved to the left, right It is characterized by consisting of a horizontal plate (130).

In addition, the photographing unit 200 is a vertical frame 210 is installed on the upper surface of the support frame 110 of the fixing part 100, and the vertical movable plate 220 is installed on the vertical frame 210 and moved up and down And, characterized in that consisting of the photographing device 230 is installed on the vertical movable plate (220).

The vertical moving plate is a vertical guide frame 221 is fixed to the vertical frame, a moving member 222 coupled to the vertical guide frame to move up and down along the longitudinal direction of the vertical frame, and one side of the moving member It is composed of a horizontal guide frame 223 coupled to the movable member to move up and down with the moving member, and a fixed frame 224 coupled to one side at the end of the horizontal guide frame, the fixed frame camera is Combined.

In addition, the photographing device 230 installed in the vertical movable plate 220 is characterized in that the camera 231, the lens 232, the illumination 233 in order from top to bottom.

In addition, the operation processing unit 300 is characterized in that using a computer with a grabber (Grabber) is installed.

In addition, a trigger 400 is additionally connected to the operation processor 300.

In addition, the fixing unit 100 for fixing the wire harness, the photographing unit 200 installed on the fixing unit 100 to photograph the wire harness, and the data photographed by the photographing unit 200 are transmitted to the wire. Comprised of arithmetic processing unit 300 for determining whether the harness is defective,

The fixing part 100 is a support frame 110, the guide frame 120 is installed on the upper portion of the support frame 110, the horizontal movement is installed on the top of the guide frame 120 to move left and right Plate 130,

The photographing unit 200 and the vertical frame 210 is installed on the upper surface of the support frame 110 of the fixing unit 100, and the vertical movable plate 220 is installed on the vertical frame 210 and moved up and down It consists of a photographing device 230 is installed on the vertical movable plate 220,

In the operation processing unit 300 is a method of operating a terminal crimping inspection device for a wire harness cable using a machine vision using a computer with a grabber installed,

Placing a wire harness to be inspected on an upper surface of the horizontal movable plate 130;

Moving the horizontal plate 130 to the left and right to position the wire harness under the photographing apparatus 230;

Moving the vertical plate 220 downward;

Photographing the wire harness with a photographing apparatus 230;

Step 5 of determining whether the wire harness is defective by receiving data photographed by the photographing apparatus 230 from the operation processor 300;

Characterized in that consists of.

In addition, after moving the vertical movement plate 220 in the three steps to the bottom, the horizontal movement plate 130 to the left and right to move the wire harness placed on the upper surface of the horizontal movement plate 130 to the lower portion of the photographing device 230 It is characterized by fine tuning to move more precisely.

In addition, the horizontal movable plate 130 is made of a magnetic material, the wire harness placed on the upper surface of the horizontal movable plate 130 is characterized in that the magnetic coupling.

In addition, the fixing unit 100 for fixing the wire harness, the photographing unit 200 installed on the fixing unit 100 to photograph the wire harness, and the data photographed by the photographing unit 200 are transmitted to the wire. In the cable clamping inspection method of the wire harness utilizing the machine vision consisting of the calculation processing unit 300 for determining the failure of the harness,

A first step of acquiring a reference image of the wire harness, which is a superior product, in order to determine whether the wire harness is defective;

Obtaining an article image of the wire harness to be inspected by the photographing apparatus 230;

Extracting a reference pattern from the acquired article image to collect area information of a wire harness as an inspection part;

Performing a rotation, movement, and resizing process to compare the article image with the reference image;

5 steps of comparing the article image and the reference image to determine whether there is a defect;

Characterized in that consists of.

In addition, in step 4, the article image is rotated to compare the reference image with the article image, the article image is moved, and the pattern distance between the reference image pattern and the article image is extracted by extracting the pattern of the reference image and the pattern of the article image. Measure and adjust the size of the article image to the same size as the reference image.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a picture of the terminal crimping inspection device of the wire harness cable utilizing the machine vision of the present invention, Figure 2 is an enlarged photograph of the present invention, Figure 3, 4 is an enlarged photograph of the present invention, Figure 5 is the present invention processing unit Figure 6 is a picture of the present invention, Figure 7 is a picture of the present invention wire harness, Figure 8 is a partial photograph of the feature extraction point of the present invention, Figure 9 is a picture comparing the rotation and movement of the extracted image of the present invention, Figure 10 Is a left boundary photograph of the terminal barrel portion of the present invention, FIG. 11 is a photograph of an algorithm based on pattern recognition for measuring the distance of the present invention, FIG. 12 is a right boundary photograph of the terminal barrel portion of the present invention, and FIG. 13 is a pattern for distance measurement of the present invention. Recognition-based algorithm picture, FIG. 14 is a picture showing a region setting state of the labeling algorithm of the present invention, FIGS. 15 and 16 show a line setting for determining whether there is a defect in the inner city of the present invention. Photo, 17 is a partial enlarged view of the present invention, Figure 18 shows the fine adjustment element is a cross-sectional view illustrating a coupling relationship of the gear and the handle of the present invention, the fine adjustment section.

The present invention relates to a terminal crimping inspection device for a wire harness cable using a machine vision, the fixing portion 100 for fixing the wire harness, and the upper portion of the fixing portion 100 is photographed to shoot the wire harness The unit 200 and the operation processing unit 300 receives the data photographed by the photographing unit 200 and determines whether the wire harness is defective.

The wire harness is an assembly product consisting of a cable and a connector, and is generally used for signal transmission purposes between a power supply source of an electronic product and a PCB assembly.

The fixing part 100 for fixing the wire harness includes a support frame 110, a guide frame 120 installed on the support frame 110, and an upper portion of the guide frame 120. It consists of a horizontal movement plate 130 moving to the right.

The horizontal plate 130 is made of a magnetic material, the wire harness placed on the upper surface of the horizontal plate 130 is magnetically coupled.

In addition, the horizontal movable plate is made of a metal material, the upper surface may be combined with a separate magnetic material, the magnetic body and the wire harness can be magnetically coupled.

In addition, the fixing member 250 may be coupled to the upper surface of the horizontal moving plate by bolts, and a roller magnet 260 may be installed inside the fixing member to magnetically couple the fixing member and the wire harness.

The roller magnet 260 coupled to the fixing member includes a magnet case 261 and a cylindrical magnet 262 inserted into the magnet case and formed into a cylindrical shape having a long cross section and having a long length and moving inside the magnet case. .

The roller magnets coupled to the fixing member may rotate toward the opposite S and N poles by rotating inside the magnet case, even though the magnet polarities of the magnet poles have any one of the N and S poles. The roller magnet coupled to the fixing member is coupled to the wire harness and the horizontal moving plate.

And the method of coupling the roller magnet to the fixing member is formed by applying a pressure by forming a magnetic coupling groove in the fixing member and forcibly coupling the roller magnet.

Alternatively, there is a method of forming a magnet coupling groove in the fixing member and attaching a roller magnet by a bond or the like.

Alternatively, when the fixing member is made of a synthetic resin material such as PP, there is a conventional insert injection method for manufacturing by injecting a synthetic resin melt after first placing a roller magnet in a mold having the shape of the fixing member.

On the other hand, the guide frame 120 is provided with a linear guide (liner guide, 122) spaced apart from each other before and after the upper surface of the lower plate 121, the ball screw 123 is a rod-shaped bar is formed in the front, rear linear guide ( Liner guides are installed in left and right directions. Both ends of the ball screw, that is, left and right sides are provided with a fixed support block formed with holes left and right, and both ends of the ball screw are coupled therein. A nut part is installed in the middle of the ball screw.

In addition, the handle 124 is installed at one end of the ball screw.

Therefore, when the user rotates the handle and the ball screw rotates clockwise or counterclockwise, the nut portion is moved back and forth. Since the horizontal plate is coupled to the nut by a bolt, the horizontal plate is moved left and right by rotating the ball screw.

In addition, the photographing unit 200 is a vertical frame 210 is installed on the upper surface of the support frame 110 of the fixing part 100, and the vertical movable plate 220 is installed on the vertical frame 210 and moved up and down ) And the photographing apparatus 230 installed on the vertical movable plate 220.

The vertical guide frame has a guide rail 221-1 having gear teeth formed in a longitudinal direction, and a gear is installed inside the moving member coupled to the vertical guide frame to move up and down. The outer side of the handle is connected to the inner gear is formed when the handle is rotated to move the moving member is moved up and down along the vertical guide frame.

In addition, the horizontal guide frame coupled to the movable member is formed with a plurality of long holes penetrated to the left and right along the longitudinal direction of the horizontal guide frame, the bolt is inserted into the long hole is coupled to the movable member.

Accordingly, the horizontal guide frame coupled to the moving member by releasing the bolt can be moved forward and backward. At this time, it is appropriate that two long holes formed in the horizontal guide frame are formed, and since the two long holes are formed, the horizontal guide frame is not rotated and is moved only before and after.

On the other hand, the fixed frame is coupled to the fine adjustment unit for finely moving back and forth in a state coupled to the horizontal guide frame.

The fine adjustment unit 270 has upper and lower fine adjustment frames 271 and 272 formed at the rear of the fixed frame, respectively, and rollers 273 are coupled to the side surfaces of the upper fine adjustment frame 271, and the lower fine adjustment is performed. Gear 274 is coupled to the side of the frame 272.

A handle 275 for rotating the gear is formed on the side of the gear, and the handle is installed to be rotatable through the lower fine adjustment frame.

In this case, two horizontal holes penetrating left and right are formed in the horizontal guide frame, rollers are coupled to upper ones of the two long holes, and gears are coupled to the lower ones. Gear teeth are formed on the inner lower surface of the hole, and the long hole and the gear are geared together.

Thus, when the user grasps the handle and rotates, the fine adjustment unit connected to the gear is finely moved back and forth.

Meanwhile, the gear has a space 274-1 formed therein, and a handle coupled to the side of the gear is rotatably coupled with a portion of the handle inserted into a space formed inside the gear.

A fixed bundle 275-1 is formed at the shaft end of the handle in which a part is inserted into the gear inner space. A plurality of fixing protrusions 275-2 are formed on the side of the fixing bundle, and a plurality of fixing grooves 274-2 through which fixing protrusions can be inserted are formed on the inner space side of the gear corresponding to the fixing protrusion.

Therefore, when the user uses the microadjustment part, the user pushes or pulls the handle to engage the fixing protrusion formed in the handle with the fixing groove inside the gear, and then rotates it, and when not in use, the fixing protrusion coupled to the fixing groove is removed by pushing or pulling. You just have to.

On the other hand, the photographing device 230 installed on the vertical movable plate 220 is installed in the order from the top to the bottom of the camera 231, the lens 232, the illumination 233, the illumination is a separate illumination fixing frame 240 Installed by).

The illumination fixing frame 240 is coupled to the side of the vertical frame, the first fixing rod 241 long in length, front and rear, the second fixing rod 242 coupled to one side at the end of the first fixing rod, A third fixing stand 243 coupled to the upper surface of the second fixing stand, and an illumination fixing stand 244 coupled to the third fixing stand.

The first fixing stand is formed with a plurality of long holes penetrated to the left and right along the longitudinal direction of the first fixing stand, the bolt is inserted into the long hole is coupled to the side of the vertical frame.

Thus, the first fixing rod can be adjusted in length before, after loosening the bolt in a state coupled to the side of the vertical frame. At this time, it is appropriate that two long holes formed in the first fixing stand are formed, and since the two long holes are formed, the first fixing stand does not rotate, but only moves forward and backward.

In addition, a second fixing rod is coupled to the bolt at the front end of the first fixing rod, and a third fixing rod is coupled to the end of the second fixing rod, and penetrates up and down along the longitudinal direction of the second fixing rod. A plurality of long holes are formed, and the third holes are coupled to the ends of the second fasteners by inserting bolts into the long holes.

Thus, the third fixing stand is capable of adjusting the length left and right along the length direction of the second fixing stand. At this time, it is appropriate to form two long holes formed in the third fixing stand, and since the two long holes are formed, the third fixing stand is not rotated and is moved only in the left and right directions.

In addition, the third fixing stand is provided with a lighting fixture in the rear, the lighting fixture is moved with the third fixing stand.

In addition, the lighting fixture has a through-hole formed in the center, the through hole is formed, the through-hole lens is installed in the lower portion of the camera.

In addition, the lower surface of the lighting fixture is provided with lighting, the lighting is coupled to the lighting fixture by bolts.

And some of the coupling is coupled to the lighting fixture is dome-shaped, the upper and lower through-holes are formed in the center, and the lens coupled to the lower part of the camera is inserted into the gourmet.

Therefore, when shooting the wire harness using the shooting device, it is possible to shoot precisely without tilting.

At this time, the lens is installed 50mm to 80mm away from the wire harness, the optimum value of the lens and the wire is 65mm is appropriate.

The illumination is installed at a distance of 1 to 10 mm from the wire harness, and an optimal value of the lens and the wire is 3 mm.

The camera uses a high-resolution, high-speed GigE (Gigbit Ethernet) type CCD camera to acquire an image, and a camera resolution of 2456 * 2053 is appropriate.

The lens has a short working distance (WD) because the size of an object for image acquisition is very small, and a telecentric lens having almost no distortion is used because the inspection result may be wrong when the measurement of dimensions is changed by height deviation and distortion.

At this time, it is appropriate to make the lens magnification 1.5 times.

The illumination may be free from light that is shadowed or reflected at the surface of the object, and uses dome illumination, which is one of the indirect lighting suitable for inspection of metal surfaces and deep objects.

In addition, the arithmetic processing unit 300 uses a computer installed with a grabber of a PCI-Express method, and uses a large display showing the presence or absence of a defect to the user.

In addition, the calculation processing unit 300 is further connected to the trigger (Trigger) so that the user can easily inspect.

Meanwhile, a method of operating a terminal crimping inspection device for a wire harness cable using machine vision is described as follows.

The wire harness to be inspected is placed on the upper surface of the horizontal movable plate 130, and the horizontal harness plate 130 is moved to the left and right to position the wire harness under the photographing apparatus 230.

The vertical movable plate 220 is moved downward, and the wire harness is photographed by the photographing apparatus 230.

Then, the data photographed by the photographing apparatus 230 is received by the operation processor 300 to determine whether the wire harness is defective.

In addition, after moving the vertical movement plate 220 to the lower side, the horizontal movement plate 130 to the left, right to move the wire harness placed on the upper surface of the horizontal movement plate 130 more accurately to the lower portion of the photographing device 230 Fine tune to move.

Meanwhile, the cable clamping test method of the wire harness using machine vision is described as follows.

In order to determine whether the wire harness is defective, the reference image of the wire harness, which is a good product, is acquired in advance by a photographing apparatus.

Then, the article image of the wire harness to be inspected is acquired by the photographing apparatus 230.

In addition, the reference pattern is extracted from the acquired article image to collect area information of the wire harness as the inspection part.

And it performs rotation, movement and resizing process to compare the article image with the reference image.

The article image is compared with the reference image to determine whether there is a defect.

The article image is rotated to compare the reference image with the article image, the article image is moved, the pattern distance of the reference image and the pattern of the article image are measured by extracting the pattern of the reference image and the pattern of the article image. The size of the image is adjusted to be the same as the reference image.

In addition, the algorithm for automatically crimping wire harness cables is as follows.

When acquiring an image, it is necessary to find a feature point that can be easily identified even when the shape, size, or position of an object changes, and a place where the corresponding point can be easily found in an image even when the camera's point of view or lighting changes.

In addition, as a result of analyzing the image of the object satisfying the above conditions, the most ideal part is the terminal barrel part.

In addition, the barrel detection algorithm of the terminal is as follows.

Histogram of Oriented Gradient (HOG) is a vector that divides the target area into cells of a certain size, obtains a histogram of the direction of edge pixels (pixels whose gradient magnitude is above a certain value) in each cell, and then connects the histogram bin values in a line. to be.

In the case of template matching, matching can be performed while maintaining the geometric information of the original image, but there is a problem that the matching is difficult even if the shape or position of the object is changed slightly.

On the other hand, the histogram matching can be matched even if the shape of the object is changed, but since the geometric information of the object is lost and only the distribution (composition ratio) information is stored, there is a problem of matching with the wrong object.

However, HOG can be seen as a matching method in the middle stage of template matching and histogram matching. It maintains geometric information in units of blocks, but has histogram inside each block, which is somewhat robust to local changes.

In addition, since HOG uses edge direction information, it can be viewed as a kind of edge-based template matching method, and since HOG is basically less sensitive to brightness change and illumination change of image, HOG also has similar characteristics.

In addition, since the HOG uses silhouette (contour) information of the object, the HOG is suitable for identifying an object having unique unique contour information without complicated internal patterns.

In view of these characteristics, HOG is a suitable method when the shape of the object is not severe, the internal pattern is simple, and the object can be identified by the outline of the object.

It is most suitable for the detection of the terminal barrel part that is produced by using the mechanism in the area setting by combining the existing pattern recognition and HOG, and the detection is excellent.

In addition, the pattern recognition based algorithm for distance measurement is described as follows.

In order to use the difference in brightness between the areas, it is determined whether the object to be detected is well matched with the characteristics, and the feature of the object is extracted using the difference in brightness in the set area.

The user directly sets the optimal value for the threshold required for identification of the object.

Basically, by using the Harr-like feature that maintains the geometric information of the object and uses the brightness difference in the unit of area, it can cover the shape change and the slight position change of the object in the area.

In addition, the right part of the inner city also analyzes the characteristics of the object to be detected based on good quality and selects the most suitable part.

The algorithm is applied in the same way as the feature point extraction method in the left part, but in the case of the threshold part, the area is set to a dark part differently from the left part.

Blob labeling algorithm that can check the boundary value of the inner city.

In the case of the inner city of the acquired image, the boundary part is divided by the characteristics of grayscale.

It is necessary to use this property to separate the boundary into data, which is called labeling.

Label adjacent pixels and use unconnected pixels to store coordinates of the area where the other number is set.

It measures the maximum and minimum size obtained in the blob set area to prevent the error of distance measurement caused by noise or overlap.

In addition, the algorithm of the presence or absence of the inner city is as follows.

Based on the development of a pattern recognition based algorithm for distance measurement, the left part creates a line based on the point of the part that changes from black to white, and the right part is reversed from white to black ( Create a line based on Point on the part that changes to Black).

The difference in length is used by excluding the inner part of the entire length from the end of each other.

Since minute differences may occur for each object to be inspected, a baseline for determining whether there is a defect by providing an error range based on several samples is prepared.

Therefore, since the present invention utilizes machine vision, inspection functions such as FPD (Flat Panel Display) inspection, PCB inspection, etc. are configured, and there is a remarkable effect of reducing product defects of the shipped wire harness through inspection automation.

Claims

The fixing part 100 for fixing the wire harness, the photographing part 200 installed on the fixing part 100 to photograph the wire harness, and the data photographed by the photographing part 200 are received to receive the wire harness. Terminal crimping inspection device for wire harness cable utilizing a machine vision, characterized in that the operation processing unit 300 for determining the defect
The method of claim 1,

The fixing part 100 is a support frame 110, the guide frame 120 is installed on the upper portion of the support frame 110, the horizontal movement is installed on the top of the guide frame 120 to move left and right Terminal crimping inspection device for wire harness cable using machine vision, characterized in that the plate 130
The method of claim 1,

The photographing unit 200 and the vertical frame 210 is installed on the upper surface of the support frame 110 of the fixing unit 100, and the vertical movable plate 220 is installed on the vertical frame 210 and moved up and down , Terminal crimping inspection device of the wire harness cable using a machine vision, characterized in that consisting of the photographing device 230 is installed on the vertical movable plate 220
The fixing part 100 for fixing the wire harness, the photographing part 200 installed on the fixing part 100 to photograph the wire harness, and the data photographed by the photographing part 200 are received to receive the wire harness. In the crimping method of the terminal of the wire harness cable using a machine vision consisting of arithmetic processing unit 300 to determine whether there is a defect,

A first step of acquiring a reference image of the wire harness, which is a superior product, in order to determine whether the wire harness is defective;

Obtaining an article image of the wire harness to be inspected by the photographing apparatus 230;

Extracting a reference pattern from the acquired article image to collect area information of a wire harness as an inspection part;

Performing a rotation, movement, and resizing process to compare the article image with the reference image;

5 steps of comparing the article image and the reference image to determine whether there is a defect;

Terminal crimping test method for wire harness cables using machine vision
The method of claim 4, wherein

Step 4 rotates the article image to compare the reference image and the article image, moves the article image, extracts the pattern of the reference image and the pattern of the article image to measure the pattern distance of the pattern of the reference image and the article image Terminal crimping test method of wire harness cable using machine vision, which is characterized in that the size of the product image is the same as the reference image
The fixing part 100 for fixing the wire harness, the photographing part 200 installed on the fixing part 100 to photograph the wire harness, and the data photographed by the photographing part 200 are received to receive the wire harness. Is made of arithmetic processing unit 300 to determine the presence or absence of the,

The fixing part 100 is a support frame 110, the guide frame 120 is installed on the upper portion of the support frame 110, the horizontal movement is installed on the top of the guide frame 120 to move left and right Plate 130,

The photographing unit 200 and the vertical frame 210 is installed on the upper surface of the support frame 110 of the fixing unit 100, and the vertical movable plate 220 is installed on the vertical frame 210 and moved up and down It consists of a photographing device 230 is installed on the vertical movable plate 220,

In the operation processing unit 300 is a method of operating a terminal crimping inspection device for a wire harness cable using a machine vision using a computer with a grabber installed,

Placing a wire harness to be inspected on an upper surface of the horizontal movable plate 130;

Moving the horizontal plate 130 to the left and right to position the wire harness under the photographing apparatus 230;

Moving the vertical movable plate 220 downward;

Photographing the wire harness with a photographing apparatus 230;

Step 5 of determining whether the wire harness is defective by receiving data photographed by the photographing apparatus 230 from the operation processor 300;

To operate terminal crimping inspection device for wire harness cable using machine vision
The method of claim 6,

After moving the vertical movement plate 220, which is the third step, to the bottom, the horizontal movement plate 130 is moved left and right to further move the wire harness placed on the upper surface of the horizontal movement plate 130 to the lower portion of the photographing apparatus 230. How to operate terminal crimping inspection device for wire harness cable using machine vision characterized by fine adjustment for precise transfer
The method of claim 6,

The horizontal movable plate 130 is made of a magnetic material, the wire harness placed on the upper surface of the horizontal movable plate 130 is a terminal crimping test device operating method of the wire harness cable using a machine vision, characterized in that the magnetic coupling.