KR102284121B1 - Smart vision inspection module for display inspection - Google Patents

Abstract

The present invention relates to a smart vision inspection module for display inspection.
The present invention includes: a camera module that captures an object to be inspected, and adjusts focus according to a distance from the object; A lighting module comprising a plurality of LEDs along the circumferential surface; A mounting unit to which the camera module and the lighting module are detachably coupled, a controller for receiving a driving control signal in connection with a worker's portable terminal or a PC to receive a driving control signal to control the lighting module and the camera module, and a power connector for supplying power and a main body including an Ethernet connector connected to the control unit to transmit and receive the driving control signal and data as a result of whether or not there is a defect; and a lighting cover for fixing the lighting module to the mounting part, blocking the light emitted from the lighting module from being directed toward the camera module, and a lens cover for preventing foreign substances from being introduced into the mounting part. It is characterized in that it contains;

Description

Smart vision inspection module for display inspection

The present invention relates to a smart vision inspection module for display inspection. In more detail, by high-speed determination of defects in not only the color of the object to be inspected, but also the shape, size, character, and state of the image, and by adjusting the focus of the lens and the light source of illumination according to the distance from the object to be inspected, It relates to a smart vision inspection module for display inspection that can improve the reliability of empty audit results.

In general, machine vision systems use special optical devices to collect images using vision sensors that are protected inside industrial cameras, and computer hardware and software can process, analyze, and measure to determine various characteristics. Defects are determined in various fields such as semiconductors, electronics, displays, and automobiles.

A vision sensor according to the prior art includes an illumination unit to which light is irradiated, and a camera unit installed above the illumination unit to capture image information of various parts mounted on an object to be inspected.

However, the vision sensor according to the prior art simply determines whether there is a defect in the shape of the object to be inspected, and it is difficult and possible to determine whether there is a defect in the size, text, and image of the object to be inspected. However, there is a problem in that it is difficult to secure reliability.

In addition, when the magnification performance of the camera unit for acquiring the image information of the object to be inspected is not appropriate, precise inspection cannot be performed, and distortion of the acquired image information occurs, so accuracy and reliability of image information quality There is a problem that it cannot provide.

Republic of Korea Patent Registration No. 10-1099392

In order to solve this problem, the present invention has been devised by the above-described background technology, and a smart vision inspection for display inspection that quickly determines the presence or absence of defects not only in the color of the object to be inspected, but also in the shape, size, character and state of the image. The purpose is to provide a module.

In addition, the present invention is a smart display for inspection that can improve the reliability of the vision inspection result of the inspection object as the vision inspection is possible in various environmental conditions by adjusting the focus of the lens and the light source of the illumination according to the distance from the inspection object It aims to provide a vision inspection module.

In addition, the present invention enables real-time monitoring of result data for an inspection object in connection with a mobile device or a PC, and not only generates statistical data of the result data, but also enables individual management of the result data. It aims to provide a smart vision inspection module for

However, the object of the present invention is not limited thereto, and even if not explicitly mentioned, the object or effect that can be grasped from the solution or embodiment of the problem is also included therein.

According to an embodiment of the present invention for achieving the above object, a camera module that captures an object to be inspected, and adjusts focus according to a distance from the object to be inspected; A lighting module comprising a plurality of LEDs along the circumferential surface; A mounting unit to which the camera module and the lighting module are detachably coupled, a controller for receiving a driving control signal in connection with a worker's portable terminal or a PC to receive a driving control signal to control the lighting module and the camera module, and a power connector for supplying power and a main body including an Ethernet connector connected to the control unit to transmit and receive the driving control signal and data as a result of whether or not there is a defect; and a lighting cover for fixing the lighting module to the mounting part, blocking the light emitted from the lighting module from being directed toward the camera module, and a lens cover for preventing foreign substances from being introduced into the mounting part. It is characterized in that it contains;

According to an embodiment of the present invention, the camera module, the camera for imaging the inspection object; a driving member for driving to adjust the position of the lens; and a focus control unit connected to the control unit to receive a driving control signal including movement distance information of the camera and to drive the driving member according to the received driving control signal.

According to an embodiment of the present invention, the lighting module includes: a connection terminal connected to the control unit to receive a driving control signal to control light emission of the LED; a fixing pin for fixing the lighting module to the mounting part; and a reflector for reflecting the light emitted from the LED to emit light only forward.

According to an embodiment of the present invention, the mounting portion includes a lighting seating portion configured to expose the lens of the camera module, forming a front circumferential surface, and in which the lighting module is detachably coupled, the lighting module and the controller It is characterized in that the connection guide hole is further configured to guide the electrical connection between the two.

According to an embodiment of the present invention, the control unit, the power supply connected to the power connector; a module control unit for controlling the driving of the lighting module and the camera module, analyzing the captured image of the inspection object to determine whether there is a defect, and transmitting the determined result data to a driving control program; and a display unit for displaying driving states of the lighting module and the lens module.

According to an embodiment of the present invention, the driving control program displays an image captured through the portable terminal or a PC, or uses a control value of the LED and distance value information for the moving distance of the camera module as a driving control signal converted to and transmitted to the module control unit through an Ethernet connector to control the lighting module and the camera module.

According to this embodiment of the present invention, by adjusting the focal point of the lens and the light source of illumination according to the type of the object to be inspected, high-speed determination of the presence or absence of defects in the shape, size, character and image state as well as the color of the inspection object This has a possible effect.

In addition, according to an embodiment of the present invention, by adjusting the focus of the lens and the light source of illumination according to the distance from the inspection object, the reliability of the vision inspection result of the inspection object can be improved as vision inspection is possible in various environmental conditions. there is an effect

In addition, according to an embodiment of the present invention, it is possible to monitor the result data for the inspection object in real time by interworking with a mobile device or a PC, and to generate statistical data of the result data, as well as individual It has a manageable effect.

In addition, various and beneficial advantages and effects of the present invention are not limited to the above, and will be more easily understood in the course of describing specific embodiments of the present invention.

1 and 2 are perspective views showing a smart vision inspection module for display inspection according to an embodiment of the present invention;
3 is a front view showing a smart vision inspection module for display inspection according to an embodiment of the present invention;
4 is a rear view showing a smart vision inspection module for display inspection according to an embodiment of the present invention;
5 is an internal configuration diagram illustrating a smart vision inspection module for display inspection according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, it should be noted that in adding reference numerals to the components of each drawing, the same components are given the same reference numerals as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It should be understood that elements may be “connected,” “coupled,” or “connected.”

In particular, the means for executing the driving control program according to the embodiment of the present invention may be an application or a web server, and as a terminal that is a means for reading a recording medium recording the application or the web server, , may include not only general PCs such as general desktops or laptops, but also mobile terminals such as smart phones, tablet PCs, personal digital assistants (PDAs) and mobile communication terminals, as well as all computing devices. should be interpreted as

1 and 2 are perspective views showing a smart vision inspection module for display inspection according to an embodiment of the present invention, and FIGS. 3 and 4 are front views showing a smart vision inspection module for display inspection according to an embodiment of the present invention. and a rear view, FIG. 5 is an internal configuration diagram illustrating a smart vision inspection module for display inspection according to an embodiment of the present invention.

As shown, the smart vision inspection module of the present invention is mounted in a facility where manufacturing is made in semiconductor, electronics, display, automobile fields, etc., and through a camera module 400 made of an industrial camera, the shape, size, As a component for determining whether an object to be inspected is defective by imaging characters, patterns, and images, the body part 100, the cover member 200, the lighting module 300, the camera module 400, and the fixing bracket 500 are included. consists of including

The body part 100 is detachably coupled to the front body part 102 and the rear side of the front body part 102 configured to capture an object to be inspected, and supplies power for imaging of the object to be inspected and is used for imaging. It consists of a rear body portion 104 that allows the transmission of images.

The front body portion 102 has a mounting portion 110 to which the cover member 200, the lighting module 300, and the camera module 400 are detachably coupled to the upper center for imaging of the object to be inspected, respectively.

The mounting unit 110 divides the inside and outside of the front body unit 102 so that the camera module 400 is mounted inside, and the cover member 200 and the lighting module 300 are mounted outside. It is a component that supports the

The mounting portion 110 is formed through the center, the insertion hole 116 into which the lens support flange 214 configured in the lighting cover 210 is inserted, and configured in the camera 410 of the camera module 400 The lens is configured to be exposed, the front side circumferential surface is formed, and the lighting seating part 114 is formed in which the detachable coupling of the lighting module 300 is made.

Here, the lighting seating portion 114 is formed through the circumferential surface at equal intervals, and a coupling hole 112 through which a screw or the like is fastened is formed. As a result, the cover member 200 and the lighting module 300 are fastened to the coupling hole 112, so that the coupling is made.

In addition, a through hole 115 into which the fixing pin 216 configured in the lighting cover 210 is inserted is formed in the upper center of the lighting receiving part 114 . Here, the through hole 115 guides the lighting cover 210 and the lighting module 300 to be matched.

In addition, a connection terminal 330 configured in the lighting module 300 is inserted into the lower center of the lighting seating unit 114 to form a connection guide hole 118 for electrical connection with the control unit 120 to be described later. do.

In addition, in the front main body 102, the brightness of the lighting module 300 is controlled, the focus of the camera module 400 is controlled, and a driving control signal is interlocked with the operator's portable terminal or PC through wired/wireless communication. The control unit 120 configured to transmit and receive is configured.

The control unit 120 controls the power supply unit 122 for supplying power for driving the smart vision inspection module, the lighting module 300 and the camera module 400, and analyzes the captured image of the inspection object to be defective. It is composed of a module control unit 124 that determines whether or not and transmits the determined result data to the driving control program.

Here, the power supply unit 122 is connected to a power connector 122 to be described later to control whether power is supplied.

In addition, the module control unit 124 is connected to an Ethernet connector 140 to be described later to receive a driving control signal of the lighting module 300 and the camera module 400 from the driving control program, or control the driving of a captured image. It is configured to send to the program.

Here, the module control unit 124 of the present invention controls the light intensity, brightness, etc. of the LED 310 of the lighting module 300 according to the control of the driving control program, preferably a plurality of LEDs 310 . Each is configured to be individually controlled.

At this time, the module control unit 124 controls to adjust the intensity and brightness of the light emitted from the LED 310, in particular, so that the light is emitted with a uniform illuminance and luminance according to the area and height according to the type of the object to be inspected. Control.

In addition, the module control unit 124 receives a driving control signal including movement distance information of the camera 410 transmitted from the driving control program, and moves a lens configured in the camera 410 according to the received driving control signal. control to make this happen.

Here, the driving control program displays the captured image through the operator's portable terminal or PC, or a control value of the LED 310 input by the operator, and a distance value for the moving distance of the camera module 400 The information is converted into a driving control signal and transmitted to the module control unit 124 through the Ethernet connector 140 .

In this case, the control value may be numerical information indicating the intensity or brightness of light emitted from the LED 310 in stages.

In addition, the control unit 120 of the present invention may further include a display unit 126 for displaying the driving state of the lighting module 300 and the camera module 400 .

The display unit 126 may display status information regarding whether the object to be inspected is being captured, an analysis progress status of the captured image, and whether the analysis is completed.

In this case, the display unit 126 may be formed of a multi-color LED that is displayed for each color, but is not limited thereto.

The rear main body 104 is mounted inside the main body 100 and a power connector 130 for supplying power to drive the smart vision inspection module of the present invention, and is connected to the controller 120 to drive the drive. An Ethernet connector 140 is configured to link the control program and the control unit 120 to transmit/receive a driving control signal and result data.

In addition, the rear body portion 104 may further include a heat dissipation panel 150 that emits heat generated during imaging of an object to be inspected and opens or closes the inner space of the body portion 100 .

In addition, the rear main body 104 of the present invention has at least a bracket fixing hole 160 to which the fixing bracket 500 is coupled so that a smart vision inspection module can be mounted on various facilities to determine whether an object to be inspected is defective or not. It is preferable to consist of two or more.

The cover member 200 improves the fixing force of the lighting module 300 mounted on the mounting part 110 , while the lighting cover 210 blocks the light emitted from the lighting module 300 from being directed toward the camera module 400 . ) and a lens cover 220 that prevents foreign substances from entering the inside of the mounting unit 110 .

The lighting cover 210 has a light emitting hole 212 in which the LED 310 of the lighting module 300 is inserted along the circumferential surface, and the light emitted from the LED 310 is emitted only in the forward direction. , is configured in a cylindrical pipe shape in the center, and a lens support flange 214 in which the camera 410 is accommodated is formed.

Here, the lens support flange 214 is configured to prevent the light emitted from the LED 310 from being directed toward the camera 410, thereby preventing the image of the inspection object from being distorted by the light during imaging of the inspection object. .

This lens support flange 214 is configured such that the front part is in contact with the inner surface of the lens cover 220, the rear part is inserted into the insertion hole 116 of the above-described mounting part 110, the end of the lighting receiving part 114. is configured to be mounted on the

In addition, the lighting cover 210 may be fixedly coupled to the mounting unit 110 toward the upper center, and a fixing pin 216 configured to be matched with the lighting module 300 may be configured.

In addition, the light emitted from the LED 310 is reflected in the light emitting hole 212 so that the light is directed only forward, and the loss of the light is minimized, so that the inspection object has uniform illuminance and luminance. A reflective plate 218 is further configured to be imaged with the .

In this case, it is preferable that the reflection plate 218 is further configured with a reflective groove having a polygonal shape to reflect the light, but is not limited thereto.

The lens cover 220 is coupled to the outer circumferential surface of the mounting unit 110 by a screw fastening method, the light of the LED 310 is transmitted through the central portion, and a transparent window 222 to enable imaging of an object to be inspected by the camera 410 . ) are separably combined. Accordingly, according to the present invention, it will be possible to inspect whether the object to be inspected is defective even in a state in which the lens cover 220 is not removed.

The lens cover 220 fixes the transparent window 222 to the lens cover 220 and is detachable from the inner surface of the lens cover 220 so that the transparent window 222 can be easily cleaned and replaced. A window fixing unit 224 to be fastened may be further configured.

The window fixing unit 224 may be configured in a shape of a ring through which the center is penetrated and a screw thread is formed on the outer circumferential surface, but is not limited thereto.

This window fixing unit 224 is configured to make contact with the front end of the lens support flange 224 to prevent foreign substances such as fine dust from entering the camera 410 side, but is not limited thereto. .

The lighting module 300 is configured such that a lens receiving part 320 in which the camera 410 is accommodated is formed in the center to capture an object to be processed, and a plurality of LEDs 310 are configured to be spaced apart from each other at a predetermined interval along the circumferential surface. do.

The lighting module 300 is configured to emit light at any one or two or more of the plurality of LEDs 310 under the control of the module controller 124 individually, or to emit light with different light intensities. can be configured.

In addition, the lighting module 300 is connected to the module control unit 124 and configured in the connection terminal 330 to allow the LED 310 to emit light according to the control of the module control unit 124 , and the lighting cover 210 . A pin through hole 340 through which the fixing pin 216 passes is further configured.

The camera module 400 includes a camera 410 made of an industrial camera to image an object to be inspected, a driving member 420 that drives to adjust the position of a lens configured in the camera 410, and the module controller 124 ) connected to receive a driving control signal, and includes a focus control unit 430 for driving the driving member 420 according to the received driving control signal.

Here, the driving member 420 may be a small motor, but is not limited thereto.

In addition, the focus control unit 430 may be configured to control the lens position of the camera 410 according to a driving control signal received from the module control unit 124 , but is not limited thereto, and the power supply unit 122 . When power is applied by , it may be configured to measure the distance to the object to be inspected, and automatically move the position of the lens according to the measured distance to adjust the focus of the lens of the camera 410 .

At this time, it is preferable that the camera module 400 further comprises a measurement sensor for measuring the distance between the camera 410 and the object to be inspected.

The fixing bracket 500 is to mount the body part 100 to a facility where the object to be inspected is manufactured so that the inspection for the presence or absence of a defect on the object to be inspected is made. It is configured to be fastened to the bracket fixing hole 160 configured in (104).

The fixing bracket 500 is a second fastening hole 510 formed in a circular shape so that the fastening means passes through and the fixing bracket 500 is rotated from the main body 100 by a predetermined angle. A fastening hole 520 is configured.

Such a fixing bracket 500 may be installed at various angles depending on the form in which the smart vision inspection module is mounted in the facility.

Terms such as "include", "compose" or "have" described above mean that the corresponding component may be embedded unless otherwise stated, so it does not exclude other components. It should be construed as being able to further include other components, and all terms including technical or scientific terms are generally understood by those of ordinary skill in the art to which the present invention belongs, unless otherwise defined. have the same meaning as

In addition, the above description is merely illustrative of the technical idea of the present invention, and various modifications and variations are possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

100: body portion 102: front body portion
104: rear body part 110: mounting part
120: control unit 130: power connector
140: Ethernet connector 150: heat dissipation panel
160: bracket fixing hole 200: cover member
210: light cover 220: lens cover
300: lighting module 310: LED
320: lens receiving unit 330: connection terminal
340: pin through hole 400: camera module
410: camera 420: driving member
430: focus control unit 500: fixing bracket

Claims (6)

a camera module that captures an object to be inspected, and adjusts focus according to a distance from the object;
A lighting module comprising a plurality of LEDs along the circumferential surface;
The LED is inserted, and a lens support flange that prevents the light of the LED from being directed toward the camera, a fixing pin that fixes the lighting module to the mounting part, and the light of the LED are reflected so that the inspection object can be imaged with uniform illuminance and luminance a cover member comprising: a lighting cover configured with a reflector to allow the light;
The lens support flange is inserted, the lens of the camera module is exposed, and the fixing pin is inserted into the front circumferential surface to guide the matching of the lighting cover and the lighting module, and the lighting module and the controller A mounting part composed of a lighting mounting part for guiding electrical connection, a control unit for receiving a driving control signal in connection with the operator's portable terminal or PC to control the lighting module and the camera module, a power connector for supplying power; A main body including an Ethernet connector that is connected to the control unit and transmits and receives the driving control signal and data as a result of whether or not there is a defect;
The control unit is
a power supply connected to the power connector;
Controls the driving of the lighting module and the camera module, analyzes the captured image of the inspection object to determine whether there is a defect, transmits the determined result data to a driving control program, and a plurality of the LEDs according to the control of the driving control program Controls the intensity and brightness of light individually, controls to emit light with uniform illuminance and luminance according to the area and height according to the type of object to be inspected, and includes camera movement distance information transmitted from the driving control program a module control unit for receiving a driving control signal to control the movement of a lens configured in the camera;
a display unit for displaying driving states of the lighting module and the lens module;
Displaying an image captured through the portable terminal or PC, or converting the control value of the LED and distance value information on the moving distance of the camera module into a driving control signal and transmitting it to the module control unit through an Ethernet connector the driving control program for controlling the lighting module and the camera module;
Smart vision inspection module for display inspection, characterized in that consisting of.
According to claim 1,
The camera module,
a camera for imaging the inspection object;
a driving member for driving to adjust the position of the lens;
a focus control unit connected to the control unit to receive a driving control signal including movement distance information of the camera and to drive the driving member according to the received driving control signal;
A smart vision inspection module for display inspection comprising a.
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