JP2024116991A - System and method for inspecting continuous sheet-shaped fabric - Google Patents

Abstract

[Problem] To provide a continuous sheet-shaped fabric inspection system and method. [Solution] The continuous sheet-shaped fabric inspection system includes a damage detection unit 120 that recognizes continuously supplied fabric 1 in a non-contact manner, judges whether the fabric is damaged, and acquires measured damage information, a marker unit 140 that contacts the surface of the fabric to display a defect mark at the location of the damage on the fabric if damage occurs on the fabric based on the measured damage information, a cutting unit that cuts the fabric including at least one or more defect marks based on the measured damage information, and a fabric inspection device 10 including a control unit that sets reference damage information to acquire measured damage information from a remote end, and the control unit analyzes the measured damage information based on the reference damage information to generate damage result information for controlling the continuous sheet-shaped fabric inspection device. [Selected Figure] Figure 2

Description

The present invention relates to a continuous sheet-shaped fabric inspection system and method, and more specifically to a continuous sheet-shaped fabric inspection system and method that can determine in real time whether or not the continuously supplied fabric is damaged using a non-contact method, thereby minimizing the defective rate of UD (Uni-Directional) sheet fabric.

Generally speaking, textile fabrics used to make clothing should be completely free of defects, but in reality this is not the case.

Fabric that is damaged or has defects of any kind must not be used in garment manufacturing. For this reason, it is necessary to detect defects in the fabric and indicate their location on the fabric.

To date, the most common method for detecting defects in fabric has been to have a skilled worker directly inspect the fabric with the naked eye while unrolling it through a fabric inspection device.

The matters described above as background art are intended to enhance understanding of the background of the present invention and should not be accepted as prior art already known to those of ordinary skill in the art.

(Patent Document) Republic of Korea Registered Patent No. 10-2143354

The problem that this invention aims to solve is to provide a system and method for inspecting continuous sheet-like fabrics.

The problems that the present invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

The continuous sheet-shaped fabric inspection system according to one embodiment of the present invention for solving the above problem includes a damage detection unit that recognizes continuously supplied fabric in a non-contact manner, determines whether the fabric is damaged, and acquires measured damage information; a marker unit that contacts the surface of the fabric to display a defect mark at the location of the damage in the fabric if damage has occurred to the fabric based on the measured damage information; a cutting unit that cuts the fabric including at least one or more defect marks based on the measured damage information; and a fabric inspection device that includes a control unit that sets reference damage information to acquire measured damage information from the fabric, and is capable of generating damage result information that controls the fabric inspection device.

In one embodiment of the present invention, the marker unit is disposed between the damage detection unit and the cutting unit, and the distance between the damage detection unit and the marker unit and the distance between the marker unit and the cutting unit may be the same as or different from each other.

In one embodiment of the present invention, the damage detection unit simultaneously receives the fabric document information of the fabric, image information acquired from the surface of the fabric, and electromagnetic wave information on the irradiated terahertz waves transmitted and reflected from the fabric. The measured damage information that determines whether the fabric is damaged or not can be obtained.

In one embodiment of the present invention, when the fabric is a UD (Uni-Directional) sheet in which polyethylene yarns and para-aramid yarns are arranged in a single direction, the damage detection unit can be adjusted to an angle of 0° to 90° in accordance with the layered structure of the yarns, and can further include at least one light source unit formed partially above the fabric, spaced a predetermined distance from the center of the damage detection unit.

In one embodiment of the present invention, the device further comprises a supply roll that is provided to continuously grab the far end of the wound fabric, a take-up roll that winds up the fabric in the longitudinal direction that has not been cut by the cutting unit, a transport conveyor that is disposed below the damage detection unit, the marker unit, and the cutting unit and transports the far end unwound from the supply roll to the take-up roll, and a display unit that visually and audibly outputs result notification information generated based on the damage result information.

In one embodiment of the present invention, the machine includes a supply roll that is provided to continuously pick up the wound fabric, a take-up roll that takes up the fabric that has not been cut by the cutting section in the longitudinal direction, and a drive roll that is disposed between the supply roll and the take-up roll and rotates around a rotation axis in the forward direction.

In one embodiment of the present invention, the device further includes at least one sensor unit arranged in front of the marker unit at a horizontal interval in the winding direction of the fabric, and the sensor unit may include a sensor that detects foreign objects contained in the fabric.

In one embodiment of the present invention, the system may include a management server that analyzes and classifies the measured damage information in real time based on the reference damage information, and generates damage result information including a fabric cutting signal that causes the cutting section to cut the fabric in a width direction intersecting with the longitudinal direction when the damage cumulative length is equal to the predetermined reference cumulative length while the damage cumulative score accumulated corresponding to the measured damage information is equal to the preset reference cumulative score.

In addition, the continuous sheet-like fabric inspection method according to one embodiment of the present invention for solving the above-mentioned problems includes, in a continuous sheet-like fabric inspection method performed by a server, when a wound fabric is transported via a transport conveyor, recognizing the fabric on the top of the transport conveyor in a non-contact manner, determining whether or not the fabric is damaged, and generating measured damage information. If damage occurs in the fabric as a result of analyzing the measured damage information, the surface of the fabric is contacted to display a defective mark at the position of the damage in the fabric. Then, the measured damage information is analyzed in real time based on the reference damage information to classify the measured damage information, and if the damage cumulative score accumulated corresponding to the measured damage information is the same as the predetermined reference cumulative score, and the damage cumulative length is equal to the predetermined reference cumulative length, the damage result information includes a fabric cutting signal for cutting the fabric in a width direction intersecting with the longitudinal direction.

In one embodiment of the present invention, the process of generating the measured damage information includes obtaining fabric document information including at least one of the following information: fabric shape, area, color, label, size, thickness, characteristics, type, fabric characteristics, fabric type, and weaving form. Obtaining image information of the fabric, taking into account at least one of the angle, contrast, distance, brightness, and feed speed from the surface of the fabric. Obtaining electromagnetic wave information for the irradiated terahertz waves that are transmitted and reflected from the fabric. Comparing and analyzing the far-end document information, image information, and electromagnetic wave information received at the same time, removing redundant data, and generating a high-resolution measured image. Then, analyzing the measured image based on the reference damage information to generate measured damage information.

In one embodiment of the present invention, the method further includes a step of checking the number of defective marks on the cut fabric, a step of checking the cutting length of the cutting source end if the cumulative number of marks on the cutting source end is equal to or smaller than a preset reference number of marks based on the reference damage information, and a step of generating fabric grade information using the cutting length and the cumulative number of marks based on the reference damage information.

The program according to one embodiment of the present invention is combined with a computer, which is hardware, and is stored on a computer-readable recording medium so that the continuous sheet-type far-end inspection method can be executed.

Other specific details of the invention are included in the detailed description and drawings.

The present invention uses a non-contact method to determine in real time whether the continuously supplied fabric is damaged, thereby minimizing the defective rate of UD (Uni-Directional) sheet fabric.

According to the present invention, the system simultaneously receives the fabric document information, image information obtained from the surface of the fabric, and electromagnetic wave information on the terahertz waves transmitted and reflected from the fabric, and clearly determines in real time whether the fabric is damaged and cuts the damaged area, thereby minimizing the amount of excess fabric generated after cutting and reducing the defective rate of the resulting product.

The present invention can reduce the cost and error of fabric inspection compared to a method in which an operator manually detects damage to fabric or manually indicates the location of damage.

The effects of the present invention are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

FIG. 1 is a block diagram illustrating a continuous sheet-type far-end inspection system according to an embodiment of the present invention. FIG. 2 is a detailed diagram for explaining the fabric inspection device shown in FIG. 1 . FIG. 13 is a diagram for explaining the shape of a far-end lesion according to an embodiment of the present invention. FIG. 13 is a diagram for explaining a damage detection unit according to another embodiment of the present invention. FIG. 11 is a diagram for explaining a fabric inspection device according to another embodiment of the present invention. 1A to 1C are diagrams illustrating a method for inspecting a continuous sheet-like material according to an embodiment of the present invention. FIG. 7 is a diagram for generating the measured damage information shown in FIG. 6 . FIG. 7 is a diagram for generating the damage result information shown in FIG. 6 . FIG. 7 is a diagram for generating the fabric grade information shown in FIG. 6 .

Advantages and features of the present invention, and methods for achieving them, will become apparent from the following detailed description of the embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and can be implemented in various forms. The present embodiments are provided solely to complete the disclosure of the present invention and to fully inform those skilled in the art of the present invention of the scope of the present invention, and the present invention is defined only by the claims.

The terms used herein are for the purpose of describing the embodiments and are not intended to limit the present invention. In this specification, the singular form includes the plural form unless otherwise specified by the context. As used herein, "including" and "and/or" do not exclude the presence or addition of one or more other components in addition to the mentioned components. The same reference numerals refer to the same components throughout the specification, and "and/or" includes each of the mentioned components, and all combinations of one or more. Although "first", "second", etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used to distinguish only one component from other components. Therefore, it goes without saying that the first component referred to below may be the second component within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used in the sense commonly understood by a person of ordinary skill in the art to which the present invention belongs. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless specifically defined otherwise.

The following describes in detail an embodiment of the present invention with reference to the attached drawings.

Figure 1 is a block diagram for explaining a continuous sheet-like fabric inspection system according to one embodiment of the present invention, Figure 2 is a detailed diagram for explaining the fabric inspection device shown in Figure 1, Figure 3 is a diagram for explaining the shape of far-end damage according to one embodiment of the present invention, Figure 4 is a diagram for explaining a damage detection unit according to another embodiment of the present invention, and Figure 5 is a diagram for explaining a fabric inspection device according to another embodiment of the present invention.

As shown in FIG. 1, a continuous sheet-like fabric inspection system according to one embodiment of the present invention can include a fabric inspection device 10, a management server 20, and an administrator terminal 30. Here, the management server 20 and the administrator terminal 30 can be omitted.

Here, the fabric inspection device 10, management server 20 and administrator terminal (manager terminal) 30 can transmit and receive data synchronized in real time using a wireless communication network. The wireless communication network can support various long distance communication methods, such as Wireless LAN (WLAN), Digital Living Network Alliance (DLNA), Wireless Broadband (Wibro), World Interoperability for Microwave Access (Wimax), Global System for Mobile communication (GSM), Code Division MultiAccess (CDMA), Code Division Multi Access 2000 (CDMA2000), Enhanced Voice-Data Optimized or Enhanced Voice-Data Only (EV-DO), Wideband CDMA (WCDMA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), IEEE 802.16, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTEA), Wireless Broadband Service (WMBS), Bluetooth Low Energy (BLE), Zigbee (Zigbee), Radio Frequency (RF), LoRa (Long Various communication methods such as, but not limited to, the IEEE 802.11b/g/n (IEEE 802.11b/g/n) and IEEE 802.11b/g/n (IEEE 802.11b/g/n) can be applied, and various widely known wireless or mobile communication methods may also be applied.

First, the fabric inspection device 10 may be an inspection device that can determine in real time whether or not the fabric 1, which is continuously supplied using a non-contact method to manufacture UD (Uni-Directional) sheets, is damaged, thereby minimizing defects.

In this embodiment, the fabric inspection device 10 is disclosed as inspecting fabric 1 for defects, but it is not limited to this and can inspect various target items for defects.

Specifically, as shown in FIG. 2, the fabric inspection device 10 can include a transport conveyor 2, a supply roll 3, a take-up roll 4, a display unit 5, a drive unit 12, and a drive control unit 14 that controls the operation of the drive unit 12.

The drive unit 12 inspects defects in the fabric 1 that is supplied from the far end 1 in the direction of travel of the conveyor 2 from the supply roll 3, which is provided to continuously pick up the original end 1 in a wound state, and is transported by the conveyor 2, and can wind up the fabric 1 that has completed inspection in the longitudinal direction via the winding roll 4.

Specifically, the driving unit 12 can include a damage detection unit 120, a marker unit 140, and a cutting unit 160. In this embodiment, it is preferable that the damage detection unit 120, the marker unit 140, and the cutting unit 160 are arranged sequentially in the longitudinal direction from the distal end 1.

In addition, the spacing between the damage detection unit 120, the marker unit 140, and the cutting unit 160 may be equal to or different from each other.

For example, the distance between the damage detection unit 120 and the marker unit 140 and the distance between the marker unit 140 and the cutting unit 160, centered on the marker unit 140, may be equal to or different from each other.

The damage detection unit 120 can recognize the continuously supplied fabric 1 in a non-contact manner, determine whether or not the fabric 1 is damaged, and generate measurement damage information.

The damage detection unit 120 can simultaneously receive fabric document information of the fabric 1, image information acquired from the surface of the fabric 1, and electromagnetic wave information on the irradiated terahertz waves transmitted and reflected from the fabric 1, and generate measured damage information that can be used to determine whether or not the fabric 1 is damaged.

Specifically, the damage detection unit 120 can obtain fabric document information for fabric 1.

Here, the fabric document information may include at least one of the following information: shape, area, color, label, size, thickness, fabric characteristics, fabric type, weaving style, and quantity, but is not limited to these.

For example, the fabric document information may be pre-recorded in the fabric inspection device 10, or may be received in real time by the management server 20 according to the fabric 1 to be inspected.

The damage detection unit 120 can also acquire image information by photographing the surface of the fabric 1 using at least one camera in a non-contact manner. In this case, the camera can include, but is not limited to, a CCD camera, a CMOS camera, a DVR (Digital Video Recorder), an NVR (Network Video Recorder), an NVS (Network Video Server), an infrared camera, a thermo-graphic camera, a camera equipped with a wide-angle lens or a fisheye lens that is effective for waterproofing and dustproofing.

Specifically, the damage detection unit 120 can obtain an image of the surface of the fabric 1 photographed using a camera while taking into consideration at least one of the angle, contrast, distance, brightness, and conveying speed, and can preprocess the obtained image to generate image information. By preprocessing the obtained image by automatically adjusting the brightness and clarity while taking into consideration the surrounding environment, shaking, etc., it is possible to obtain clearer image information.

In contrast, if the imaging technique is a video, the damage detection unit 120 may extract normal images from the video, and then preprocess the images obtained through a filtering step to generate image information. In this case, the video may be at least 10 seconds long.

The damage detection unit 120 can also use at least one camera to irradiate terahertz waves onto the fabric 1 and generate electromagnetic wave information.

Specifically, the damage detection unit 120 irradiates the fabric 1 placed on the transport conveyor 2 with terahertz waves generated using a camera, simultaneously receives electromagnetic wave signals of the terahertz waves transmitted and reflected from the fabric 1, and can generate electromagnetic wave information using the electromagnetic wave signals.

At this time, the generated terahertz waves can have an intensity and pulse width that can be irradiated to and transmitted through or reflected by the fabric 1, but are not limited to this. For example, the damage detection unit 120 can generate and irradiate terahertz waves consisting of electromagnetic waves with a frequency of 0.1 THz to 10 THz.

According to the embodiment, the damage detection unit 120 can minimize the loss of terahertz waves and obtain high-resolution images.

According to an embodiment, the damage detection unit 120 can be placed in a measurement space such as a chamber to minimize the influence of the external environment. That is, to increase the transmission and/or reflectance of the fabric 1 to the terahertz wave, the damage detection unit 120 can be placed in a separate measurement space, for example, but not limited to, a chamber.

In addition, the damage detection unit 120 can simultaneously receive the fabric document information of the fabric 1, the image information acquired from the surface of the fabric 1, and the electromagnetic wave information for the terahertz waves transmitted and reflected from the fabric 1, and then compare and analyze them to remove redundant data, and generate a high-resolution measurement image.

The damage detection unit 120 can also use the high-resolution measurement image to determine whether or not there is damage to the fabric 1 and generate measurement damage information.

Specifically, when damage is present in fabric 1, the damage detection unit 120 can generate measurement damage information including position information of fabric damage A.

For example, as shown in FIG. 3, fabric damage A can include, but is not limited to, first damage symptoms such as twisting, overlapping, and chipping of yarns, second damage symptoms such as peeling of the yarn film, third damage symptoms such as uneven dyeing (color unevenness) and dyeing deviations caused by deviations in the dyeing behavior between different fibers during dyeing due to deviations in the physical properties of the yarn including its strength and elongation, and fourth damage symptoms such as water, dust, oil, and other contamination, whitening of the areas where the dyes have peeled off due to friction caused by the powdering of the dyes, and abnormal dye flames.

According to an embodiment, as shown in (a) and (b) of FIG. 4, the damage detection unit 120 includes a display unit 5 that can output symbols, letters, numbers, etc. on a screen, and a light source unit 122 is disposed around the damage detection unit 120.

When the fabric 1 is a UD (Uni-Directional) sheet in which polyethylene yarns and para-aramid yarns are arranged in one direction, the angle of the light source unit 122 can be adjusted from 0° to 90° according to the layered structure of the yarns, and at least one light source unit 122 can be placed partially above the fabric at a predetermined distance from the center of the damage detection unit 120.

In other words, the light source unit 122, which can be adjusted to an angle of 0° to 90°, can more accurately determine the far-end damage A and minimize the defective rate of the fabric 1.

For example, the light source unit 122 may include a lamp.

According to an embodiment, the lamp of the light source unit 122 includes a photocatalytic UV LED or a sterilizing UV LED that irradiates ultraviolet light, so that the fabric 1 can be sterilized and purified by irradiating visible light.

The marker unit 140 can display a defect mark on the position information of the fabric damage A in accordance with the measured damage information obtained from the damage detection unit 120.

Specifically, the marker unit 140 can display a defect mark on the position information of the fabric damage A corresponding to the measured damage information, and automatically save the position information of the defect mark.

According to an embodiment, the marker unit 140 can display defect marks with different shapes or colors for the first to fourth damage symptoms of fabric damage A based on the measured damage information.

The cutting unit 160 can cut the fabric 1 according to the damage result information generated by analyzing the measured damage information.

Specifically, the cutting unit 160 can cut the fabric 1 including at least one defective mark in a width direction intersecting with the longitudinal direction of the distal end 1 based on the damage result information. At this time, the cutting unit 160 can cut the fabric 1 using various methods such as a laser cutting method, an ultrasonic cutting method, a non-ultrasonic cutting method, a knife cutting method, and a hot wire cutting method.

For example, the cutting unit 160 can cut the fabric 1 when the damage cumulative score is the same as the preset reference cumulative score and the damage cumulative length is equal to the preset reference cumulative length.

According to the embodiment, if a defect mark does not appear on fabric 1 within a certain length, the cutting unit 160 can cut fabric 1 before the defect mark appears on fabric 1 based on the position information of fabric damage A.

The display unit 5 can visually and audibly output the result notification information generated based on the damage result information.

For example, when an operation stop signal or a fabric cut signal is generated, result notification information can be output visually and audibly to ensure the safety of the operator and minimize defects in the fabric 1.

According to an embodiment, the fabric inspection device 10 may further include at least one sensor unit arranged at a horizontal interval in front of the marker unit 140 in the winding direction of the fabric. The sensor unit may include a sensor that detects foreign objects, etc., contained in the fabric 1.

The drive control unit 14 is a device that controls the operation of the drive unit 12, and can operate using an application program (or application) in this disclosure, and such an application program performs wireless communication. It can be downloaded from an external server or the management server 20.

The drive control unit 14 may include a communication module 140, a display module 142, a memory module 144, a power supply module 146, and a control module 148.

The communication module 140 can send and receive data with the management server 20.

The display module 142 can visually and audibly display the current operating status of the fabric inspection device 10.

The memory module 144 can store data transmitted and received via the communication module 140 and data supporting various functions of the fabric inspection device 10.

The storage module 144 can store a plurality of application programs (application programs or applications) run by the fabric inspection device 10, as well as data and instructions for the operation of the fabric inspection device 10. At least some of such application programs can be downloaded from an external server via wireless communication.

The power supply module 146 is connected to the internal power supply of the fabric inspection device 10 under the control of the control module 148, and can supply power to each component included in the fabric inspection device 10.

According to an embodiment, the power module 146 is externally powered and includes a battery (not shown), allowing the remaining battery charge to be visually confirmed.

The battery can be charged from a 220V mains power source or by connecting the USB to a laptop or computer. The battery part can also be a mobile phone battery, and can be charged with a mobile phone battery charger using a 3.7V lithium-ion battery, which is the most economical and efficient secondary battery. In contrast, the battery can be a built-in battery or a replaceable form of battery.

When the fabric 1 to be inspected enters the transport conveyor 2, the control module 148 can analyze the measured damage information in real time based on the reference damage information and generate damage result information corresponding to the measured damage information.

Specifically, the control module 148 compares and analyzes the fabric document information with the image information and electromagnetic wave information of fabric 1 acquired from the damage detection unit 120 in a non-contact manner, removes duplicate data, and determines whether or not there is damage to fabric 1, thereby generating measured damage information. That is, the control module 148 compares and analyzes the far-end document information, image information, and electromagnetic wave information, and if there is damage to fabric 1, generates measured damage information including location information of fabric damage A.

For example, the control module 148 simultaneously acquires fabric document information of fabric 1, including at least one of the following information: shape, area, color, label, size, thickness, fabric characteristics, fabric type, weaving form, and quantity; image information of fabric 1 photographed while taking into consideration at least one of the angle, contrast, distance, brightness, and feed speed from the surface of fabric 1; and electromagnetic wave information of terahertz waves transmitted and reflected from fabric 1. The control module 148 then compares and analyzes the fabric document information, image information, and electromagnetic wave information, deletes duplicate data, generates a high-resolution measurement image, and analyzes the measurement image based on the reference damage information to generate measurement damage information in real time.

At this time, if the photographing technique for photographing the fabric 1 is a video, the control module 148 can extract a normal image from the video, and then pre-process the image obtained through a filtering step to generate image information. At this time, the video may be at least 10 seconds long.

Here, the fabric damage A can include, but is not limited to, the first damage symptom such as twisting, overlapping, or chipping of the yarn, the second damage symptom such as peeling of the yarn film, the third damage symptom such as uneven dyeing (color unevenness) and dyeing deviation caused by deviation in the dyeing behavior between different fibers during dyeing due to deviation in the physical properties of the yarn including yarn strength and elongation, and the fourth damage symptom such as whitening and dye flames caused by other contamination such as water, dust, oil, etc., or by the agents present on the surface being blown away in powder form when rubbed, resulting in the agents peeling off.

According to an embodiment, the control module 148 can receive the measured damage information from the management server 20.

The control module 148 can also control the marker unit 140 to display a defect mark at the location information of the fabric damage A based on the measured damage information.

Specifically, the marker unit 140 displays a defect mark in the position information of the fabric damage A in response to the measured damage information, and the control module 148 displays the defect mark by the marker unit 140. The position information can be automatically saved.

At this time, the control module 148 can reconfirm whether the position information of the fabric damage A and the position information of the defective mark are the same.

If the position information of the fabric damage A and the position information of the defective mark are not identical, an operation stop signal can be generated to control the operation of the fabric inspection device 10.

In addition, after displaying the defective mark, the control module 148 analyzes and classifies the measured damage information in real time based on the reference damage information, and generates damage result information including a fabric cutting signal that causes the cutting unit 160 to cut the fabric 1 in a direction intersecting the longitudinal direction when the accumulated damage score corresponding to the measured damage information is equal to the preset reference accumulated score and the accumulated damage length is equal to the preset reference accumulated length.

Specifically, the control module 148 analyzes the measured damage information based on the reference damage information, classifies the defective marks according to the damage symptoms of the fabric damage A according to the classification criteria, adds the damage scores of the damage symptoms to calculate the damage accumulation score, and can calculate the damage accumulation length corresponding to the damage accumulation score.

At this time, the cumulative damage score represents the damage score accumulated according to the damage symptoms of fabric damage A, and the cumulative damage length is the same as the cumulative damage score and the reference cumulative score starting from the position information of the defective mark displayed first. It can indicate the length of fabric 1 ending at the position information of the defective mark displayed at the viewpoint, but is not limited to this.

For example, when the damage cumulative score accumulated by adding classification scores according to the classification criteria is equal to the preset reference cumulative score, and the damage cumulative length is equal to the preset reference cumulative length, the control module 148 can generate damage result information including a fabric cutting signal that instructs the cutting unit 160 to cut the fabric 1 in the width direction intersecting with the longitudinal direction.

On the other hand, if the damage cumulative score, which is accumulated by adding the classification score according to the classification criteria, is not the same as the preset reference cumulative score, the control module 148 can generate damage result information including an operation stop signal or an operation progress signal for the fabric inspection device 10.

For example, if the damage cumulative score, which is accumulated by adding classification scores according to the classification criteria, is greater than a preset reference cumulative score, the control module 148 can generate an operation stop signal to stop the operation of the fabric inspection device 10.

When the damage cumulative score, which is accumulated by adding classification scores according to the classification criteria, is smaller than a preset reference cumulative score, the control module 148 can generate an operation progress signal to proceed with the operation of the fabric inspection device 10.

On the other hand, when the damage cumulative score, which is accumulated by adding classification scores according to the classification criteria, is the same as the predetermined reference cumulative score, but the damage cumulative length is not the same as the predetermined reference cumulative length, the control module 148 can generate damage result information including an operation stop signal or an operation progress signal for the fabric inspection device 10.

For example, the control module 148 can generate an operation stop signal to stop operation of the fabric inspection device 10 if the damage cumulative length is longer than a preset reference cumulative length.

The control module 148 can generate an operation proceeding signal to proceed with the operation of the fabric inspection device 10 if the damage cumulative length is shorter than a preset reference cumulative length.

The control module 148 can also generate fabric grade information using the length of the cut fabric and the cumulative number of marks based on the reference damage information.

Specifically, the control module 148 can determine the number of defective marks on the cut fabric and generate fabric grade information proportional to the cut length of the cut fabric.

For example, if the accumulated number of marks is less than a preset reference number of marks, the control module 148 can generate fabric grade information in which the longer the cut length, the higher the grade.

In other words, the control module 148 can generate fabric grade information with an S grade when there is no accumulated cumulative mark number and the cut length is long, and generate fabric class information with a class A when the number of accumulated marks is less than the predetermined reference mark number and the cut length is long.

In contrast, if the accumulated cumulative mark number is the same as the predefined reference mark number, the control module 148 may generate fabric grade information with a higher grade for longer cut lengths.

In other words, the control module 148 can generate fabric grade information with grade A when the cut length is long and the accumulated mark count is the same as the predetermined reference mark count, and generate fabric grade information with grade B when the cut length is short.

If the accumulated cumulative mark number is equal to the preset reference mark number, the control module 148 can generate fabric grade information with a higher grade for longer cut lengths.

In other words, if the accumulated number of marks is greater than a preset reference number of marks, the control module 148 can generate fabric grade information for the cut fabric as a discard grade regardless of the cut length.

For example, grade S may be fabric cut with no defect marks, grade A with one defect mark, grade B with 2-3 defect marks, and discard grade may be fabric cut with 3 or more defect marks. In this case, the grade information may be adjusted upwards if the length is longer in proportion to the length of the fabric 1 to be cut.

According to the embodiment, fabric grade information can be generated using the cumulative number of marks based on the reference damage information, regardless of the length of the cut fabric.

According to the embodiment, with the length of the cut fabric fixed, fabric grade information can be generated using the cumulative number of marks based on the reference damage information.

The control module 148 can also set standard damage information that can be used to determine whether or not the fabric 1 is damaged and the fabric grade.

In this case, the reference damage information may include, but is not limited to, information regarding damage symptoms, damage score, classification criteria, classification score, reference cumulative length, reference cumulative score, reference mark number, and fabric grade.

In this embodiment, the damage symptoms of fabric damage A include first to fourth damage symptoms, the operation of the fabric inspection device 10 is set to stop for the first damage symptom, the damage score for the second damage symptom is set to 3 points, the damage score for the third damage symptom is set to 2 points, and the damage score for the fourth damage symptom is set to 1 point, but is not limited to this.

The classification criteria are used to classify the damage symptoms of fabric damage A, with the second damage symptom set to the first classification criterion, the third damage symptom set to the second classification criterion, the fourth damage symptom set to the third classification criterion, and the first damage symptom set to the third classification criterion, but are not limited to this.

The classification score is a score where the first to fourth damage scores are matched according to the first to fourth classification criteria, and the first classification score may be 3 points, the second classification score may be 2 points, the third classification score may be 1 point, and the fourth classification score may be 0 points, but is not limited to this.

The reference cumulative length indicates the case where the length of the fabric 1 after the total inspection, including the position information of the first displayed defect mark, is 2 mm, and the reference cumulative score can indicate the case where the accumulated damage score is 5 points regardless of the number of defect marks, but is not limited to this.

The number of reference marks indicates the number of accumulated defective marks displayed within the cut end, and in this embodiment, it is set to 3 as the standard, and the fabric grade is set to S grade, A grade, B grade, and discard grade in proportion to the number of accumulated defective marks displayed within the cut end, but is not limited to this.

When cut to a length of 2mm or more, grade S is fabric that has been cut to have no defective marks, grade A is fabric that has been cut to have one defective mark, grade B is fabric that has been cut to have two or three defective marks, and discard grade may be fabric that has been cut to have three or more defective marks. In this case, the grade information may be adjusted upward if the length is longer in proportion to the length of the far-end machine to be cut.

Instead, the fabric grade is displayed in the cut fabric and is set to S grade, A grade, B grade, or discard grade in proportion to the number of accumulated defective marks and the cut length, but is not limited to this.

According to an embodiment, the reference damage information can be generated by iterative learning based on big data.

According to an embodiment, the control module 148 can receive reference damage information from the management server 20.

The control module 148 can update the baseline damage information in real time in response to the measured damage information, fabric grade information, and damage result information.

On the other hand, the far-end inspection device 10 may further include a drive roll 6 as shown in FIG. 5.

For example, if the drive roll 6 is disposed between the supply roll 3 and the take-up roll 4, the damage detection unit 120 is disposed between the supply roll 3 and the drive roll 6, and the marker unit 140 and the cut unit 160 can be disposed corresponding to the drive roll 6 (see FIG. 5(a)).

On the other hand, when the drive roll 6 is disposed between the supply roll 3 and the take-up roll 4, the damage detection unit 120 is disposed between the supply roll 3 and the drive roll 6. The marker unit 140 may be disposed corresponding to the drive roll 6, and the cut unit 160 may be disposed between the drive roll 6 and the take-up roll 4 (see FIG. 5(b)). That is, the marker unit 140 is disposed on the underside of the far end 1, and a defect mark can be displayed on the underside of the far end 1.

The management server 20 may include a data communication unit 22, a database unit 24, a monitoring unit 26, and a server control unit 28.

The data communication unit 22 can send and receive data with the far-end inspection device 10.

The database unit 24 can store data transmitted and received with the far-end inspection device 10 via the wireless communication network.

The database unit 24 can store data supporting various functions of the management server 20. The database unit 24 can store a plurality of application programs (application programs or applications) run by the management server 20, as well as data and instructions for the operation of the management server 20. At least some of such application programs can be downloaded from an external server via wireless communication.

The monitoring unit 26 can monitor the operating status of the far-end inspection device 10, the operating status of the management server 20, and data transmitted and received between the fabric inspection device 10 and the management server 20 by displaying the screen. In other words, by checking the usage status of the fabric inspection device 10 in real time, it is possible to simplify the use by the administrator and give the administrator a greater sense of trust.

When the fabric 1 to be inspected enters the transport conveyor 2, the server control unit 28 can analyze the measured damage information in real time based on the reference damage information and generate damage result information corresponding to the measured damage information.

The server control unit 28 can also control the marker unit 140 to display a defect mark at the location information of fabric damage A based on the measured damage information.

In addition, after displaying the defective mark, the server control unit 28 analyzes and classifies the measured damage information in real time based on the reference damage information, and generates damage result information including a damage accumulation score accumulated corresponding to the measured damage information and a preset reference accumulation score. If the damage accumulation length during the operation is equal to the preset reference accumulation length, the server control unit 28 can generate damage result information including a fabric cutting signal that causes the cutting unit to cut the fabric in the width direction intersecting with the longitudinal direction.

The server control unit 28 can also generate fabric grade information using the length of the cut fabric and the cumulative number of marks based on the reference damage information.

The server control unit 28 can also set standard damage information that can be used to determine whether or not fabric 1 is damaged and the fabric grade.

Such a management server 20 may be implemented using hardware circuits (e.g., CMOS-based logic circuits), firmware, software, or a combination thereof. For example, it may be implemented using transistors, logic gates, and electronic circuits in the form of various electrical structures.

The administrator terminal 30 is a terminal owned by a separate administrator, and can transmit and receive data in real time in synchronization with the fabric inspection device 10 and the management server 20 using a wireless communication network. At this time, the administrator terminal 30 can transmit and receive data using an application program (or application).

The administrator terminal 30 can control the fabric inspection device 10 and the management server 20 to analyze the measured damage information in real time based on the reference damage information and generate damage result information corresponding to the measured damage information.

The administrator terminal 30 may include various portable electronic communication devices that support communication with the fabric inspection device 10 and the management server 20. For example, the administrator terminal 30 may include various portable terminals such as a smart phone, a PDA (Personal Digital Assistant), a tablet, a wearable device, a watch-type terminal (including a smart glass, a head mounted display (HMD), etc.), and various IoT (Internet of Things) terminals as separate smart devices, but may also include electronic communication devices such as a desktop computer and a workstation computer that are not portable.

The operation of the continuous sheet-like fabric inspection system according to one embodiment of the present invention having such a structure is as follows. Figure 6 is a diagram for explaining a continuous sheet-like fabric inspection method according to one embodiment of the present invention, Figure 7 is a diagram for generating the measurement damage information shown in Figure 6, Figure 8 is a diagram for generating the damage result information shown in Figure 6, and Figure 9 is a diagram for generating the fabric grade information shown in Figure 6.

In this embodiment, the method for inspecting continuous sheet-like fabric is performed by the management server 20, but is not limited to this and can also be performed by the fabric inspection device 10.

First, as shown in FIG. 6, the management server 20 can generate reference damage information (S10).

Specifically, the management server 20 can set standard damage information that can be used to determine whether or not fabric 1 is damaged and the fabric grade.

For example, the reference damage information may include, but is not limited to, information regarding damage symptoms, damage score, classification criteria, classification score, reference cumulative length, reference cumulative score, reference mark number, and fabric grade.

Next, the management server 20 can acquire the measured damage information from the fabric inspection device 10 (S12).

Specifically, referring to FIG. 7, the fabric inspection device 10 can acquire document information of fabric 1 and generate fabric document information (S100).

For example, the fabric document information may include, but is not limited to, at least one of the following: shape, area, color, label, size, thickness, fabric characteristics, fabric type, weaving style, and quantity.

Next, the fabric inspection device 10 can photograph the fabric 1 using a camera (S110).

Next, if the imaging technique is video (S120), the fabric inspection device 10 can extract at least 10 normal images from the video (S130).

Next, the fabric inspection device 10 preprocesses the images obtained through a filtering step of the extracted normal images (S140) to generate image information consisting of high-resolution images (S150).

On the other hand, if the imaging technique is photography (S120), the fabric inspection device 10 can acquire an image from the surface of the fabric 1 (S190).

Next, the fabric inspection device 10 preprocesses the acquired image (S140) and generates image information consisting of a high-resolution image (S150).

Specifically, the fabric inspection device 10 can automatically adjust the brightness and sharpness of the acquired image taking into account the surrounding environment, shaking, etc. In this case, the application used in the image correction method may be an application built into the fabric inspection device 10, or an application downloaded from an application distribution server and installed in the fabric inspection device 10.

In this embodiment, the images may include at least one image, but are not limited to this, and may include a video of 10 seconds or more, or may include both an image and a video.

Next, the fabric inspection device 10 can generate terahertz waves and irradiate the terahertz waves onto the fabric 1 (S200).

At this time, the generated terahertz waves can have an intensity and pulse width that can be irradiated to and transmitted through and reflected by at least one or more far ends 1, but are not limited to this. For example, terahertz waves consisting of electromagnetic waves with a frequency of 0.1 THz to 10 THz can be generated.

Next, the fabric inspection device 10 can irradiate the fabric 1 with terahertz waves using at least one camera and simultaneously receive electromagnetic wave signals corresponding to the irradiated terahertz waves that are transmitted and reflected from the fabric 1 (S210).

For example, the fabric inspection device 10 can acquire images using a camera moved in the x-axis, y-axis, and z-axis directions via a line scan system.

According to the embodiment, the fabric inspection device 10 can detect an electromagnetic wave signal including a transmitted wave and a reflected wave due to the irradiated terahertz wave, taking into account the thickness of the fabric 1 based on the fabric document information of the fabric 1.

According to the embodiment, the fabric inspection device 10 detects an electromagnetic wave signal including a transmitted wave and a reflected wave generated by terahertz waves irradiated in the chamber A while taking into account the distance between the fabric 1 and the camera.

Next, the fabric inspection device 10 can generate high-resolution electromagnetic wave information using the detected electromagnetic wave signal (S220).

Next, the fabric inspection device 10 compares and analyzes the generated fabric document information of the fabric 1, the image information acquired from the surface of the fabric 1, and the electronic wave information for the terahertz waves transmitted and reflected from the fabric 1 to eliminate duplicate data (S160), and can generate a high-resolution measurement image (S170).

Next, the fabric inspection device 10 can analyze the measurement image based on the reference damage information to generate measurement damage information (S180).

Next, the management server 20 may control the marker unit 140 to display a defect mark at the position information of the fabric damage A based on the measured damage information (S14).

Specifically, the fabric inspection device 10 displays a defect mark in the position information of the fabric damage A in response to the measured damage information, and the control module 148 can automatically store the position information where the defect mark is displayed by the marker unit 140.

Next, the management server 20 can analyze the measured damage information in real time based on the reference damage information and generate damage result information corresponding to the measured damage information (S16).

Specifically, as shown in FIG. 8, after a defect mark is displayed on the fabric 1 in response to the measured damage information (S300), the management server 20 can analyze the measured damage information based on the reference damage information and classify it according to the classification criteria (S310).

For example, the management server 20 can classify defect marks according to the damage symptoms of fabric damage A.

In this case, the classification criteria are set as criteria for classifying the damage symptoms of fabric damage (A), with the second damage symptom set to the first classification criterion, the third damage symptom set to the second classification criterion, the fourth damage symptom set to the third classification criterion, and the first damage symptom set to the third classification criterion, but are not limited to this.

Here, the fabric damage A can include, but is not limited to, the first damage symptom such as twisting, overlapping, or chipping of the yarn, the second damage symptom such as peeling of the yarn film, the third damage symptom such as uneven dyeing (color unevenness) and dyeing deviation caused by deviation in the dyeing behavior between different fibers during dyeing due to deviation in the physical properties of the yarn including yarn strength and elongation, and the fourth damage symptom such as whitening and dye flames caused by other contamination such as water, dust, oil, etc., or by the agents present on the surface being blown away in powder form when rubbed, resulting in the agents peeling off.

Next, if the measured damage information is classified according to the first classification criterion (S320), the management server 20 can add the first damage score to calculate the cumulative damage score (S330).

Specifically, the classification score is a score where the first to fourth damage scores are matched according to the first to fourth classification criteria, and the first classification score may be 3 points, the second classification score may be 2 points, the third classification score may be 1 point, and the fourth classification score may be 0 points, but is not limited to this.

For example, when the measured damage information is matched with a second damage symptom, such as peeling of the film on the yarn, and classified into the first classification criteria, the management server 20 can add three points to the first classification score to calculate the cumulative damage score.

On the other hand, if the measured damage information is classified according to the second classification criterion (S400), the management server 20 can add the second damage score to calculate the cumulative damage score (S410).

For example, when the measured damage information is matched with a third damage symptom such as deviations in the physical properties of the yarn including its strength and elongation, uneven dyeing (color unevenness) caused by deviations in the dyeing behavior between different types of fibers during dyeing, or dyeing deviations, and classified as meeting the second classification criteria, the management server 20 can add a second classification score of 2 points to calculate a cumulative damage score.

In addition, if the measured damage information is classified as falling under the third classification criterion (S420), the management server 20 can add a third damage score to calculate the cumulative damage score (S430).

For example, if the measured damage information matches the fourth damage symptom such as water, dust, oil, or other contamination, powdered paint present on the surface caused by friction, whitening of the areas where the paint has peeled off, or dye residue, and is classified as falling under the third classification criteria, the management server 20 can add one point to the third classification score to calculate the cumulative damage score.

On the other hand, if the measured damage information is classified as falling under the fourth classification criterion (S440), the management server 20 can generate an operation stop signal to control the operation of the fabric inspection device 10 (S450).

For example, when the measured damage information is matched with a first damage symptom such as twisting, overlapping, or chipping of the yarn and classified into the fourth classification criterion, the management server 20 can generate an operation stop signal because the fourth classification score is 0 points.

According to the embodiment, when the measured damage information is matched with a first damage symptom such as twisting, overlapping, or chipping of the yarn and classified into the fourth classification criterion, the management server 20 can generate a far-end cut signal to cut the fabric in the width direction intersecting with the longitudinal direction, and cut the fabric 1.

Next, after adding the classification score and calculating the cumulative damage score, if the cumulative damage score to be accumulated is equal to the preset reference cumulative score and the cumulative damage length is equal to the preset reference cumulative length (S340), the management server 20 can calculate the cumulative damage length (S350).

Next, when the cumulative damage score accumulated in response to the measured damage information is equal to the predetermined reference cumulative score, and the cumulative damage length is equal to the predetermined reference cumulative length, the management server 20 can generate a fabric cutting signal to cut the fabric 1 in the width direction intersecting with the longitudinal direction (S370).

On the other hand, if the damage cumulative score, which is accumulated by adding classification scores according to the classification criteria, is not the same as the predetermined standard cumulative score (S340), the management server 20 can generate an operation progress signal to proceed with the operation of the fabric inspection device (10) (S400).

In addition, if the damage cumulative score, which is accumulated by adding classification scores according to the classification criteria, is the same as the predetermined standard cumulative score, but the damage cumulative length is not the same as the predetermined standard cumulative length (S360), the management server (20) can generate an operation progress signal to proceed with the operation of the fabric inspection device 10 (S390).

Next, the management server 20 can generate damage result information including a fabric cutting signal, an operation progress signal, and an operation status signal (S380).

According to an embodiment, the management server 20 can transmit result notification information generated based on the damage result information to the display unit 5, which outputs the result visually and audibly.

Next, the management server 20 can control the operation of the fabric inspection device 10 based on the damage result information (S18).

Next, the management server 20 can generate fabric grade information using the length of the cut fabric and the cumulative number of marks based on the reference damage information (S20).

Specifically, as shown in FIG. 9, the management server 20 checks the number of defective marks on the cut fabric (S500), and if the accumulated number of marks is not less than a preset reference number of marks (S510), it can generate fabric grade information in proportion to the cut length of the cut fabric (S520, S530).

On the other hand, when the accumulated number of marks is equal to the preset reference number of marks (S540), the management server 20 can generate fabric grade information in proportion to the cutting length of the raw cutting end (S520, S530). That is, the management server 20 can generate fabric grade information of a higher grade as the cutting length is longer.

Next, if the accumulated number of marks is greater than a preset reference number of marks, the management server 20 can generate fabric grade information with the cut fabric being graded as a waste grade regardless of the cut length (S550).

Next, the management server 20 can update the reference damage information in real time in response to the measured damage information, fabric grade information, and damage result information (S22).

Finally, the administrator terminal 30 can monitor the fabric inspection device 10 and the management server 20 in real time (S24).

According to an embodiment, the administrator terminal 30 can generate a feedback signal according to the monitoring results.

The steps of the methods or algorithms described in connection with the embodiments of the present invention may be implemented directly in hardware, in software modules executed by hardware, or in a combination thereof. The software modules may reside in Random Access Memory (RAM), Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Flash Memory, a hard disk, a removable disk, a CD-ROM, or any form of computer-readable recording medium known in the art to which the present invention pertains.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains will understand that the present invention can be embodied in other specific forms without changing its technical concept or essential features. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

REFERENCE SIGNS LIST 1 Fabric 2 Feeding conveyor 3 Supply roll 4 Winding roll 5 Display unit 6 Driving roll 10 Fabric inspection device 12 Driving unit 14 Driving control unit 20 Management server 120 Damage detection unit 122 Light source unit 140 Marking unit 160 Cutting unit

Claims (12)

a damage detection unit that recognizes a continuously supplied continuous sheet-shaped fabric in a non-contact manner, determines whether or not the fabric is damaged, and acquires measured damage information;
a marker unit that, when it is determined that damage has occurred in the fabric based on the measured damage information, comes into contact with a surface of the fabric to display a defect mark at the position of the damage in the fabric;
a cutting unit for cutting the fabric including at least one or more defect marks based on the measured damage information;
a fabric inspection device including a control unit that sets reference damage information to obtain the measured damage information from the fabric;
The control unit analyzes the measured damage information based on the reference damage information to generate damage result information for controlling the continuous sheet-shaped fabric inspection device.
A continuous sheet-shaped fabric inspection system. The marker unit is disposed between the damage detection unit and the cutting unit,
The continuous sheet-form fabric inspection system according to claim 1 , wherein a distance between the damage detection unit and the marker unit and a distance between the marker unit and the cutting unit are equal to or different from each other. The continuous sheet-shaped fabric inspection system according to claim 1, wherein the damage detection unit simultaneously receives fabric document information of the fabric, image information acquired from the surface of the fabric, and electromagnetic wave information on the irradiated terahertz waves transmitted and reflected from the fabric, and acquires the measured damage information that determines whether or not the fabric is damaged. The continuous sheet-shaped fabric inspection system according to claim 3, wherein the damage detection unit can adjust the angle from 0° to 90° in accordance with the layered structure of the yarns when the fabric is a UD (Uni-Directional) sheet in which polyethylene yarns and para-aramid yarns are arranged in a single direction, and further includes at least one light source unit that is spaced a predetermined distance from the center of the damage detection unit and partially formed above the fabric. a supply roll for continuously drawing out the wound fabric;
a take-up roll that takes up the fabric that has not been cut by the cutting section in a longitudinal direction;
a transport conveyor disposed below the damage detection unit, the marker unit, and the cutting unit, for transporting the fabric unwound from the supply roll to the take-up roll;
The continuous sheet-shaped fabric inspection system according to claim 1 , further comprising a display unit that visually and audibly outputs result notification information generated based on the damage result information. a supply roll for continuously drawing out the wound fabric;
a take-up roll that takes up the fabric that has not been cut by the cutting section in a longitudinal direction;
a drive roll disposed between the supply roll and the take-up roll and rotating about a rotation axis in a traveling direction;
2. The continuous sheet-shaped fabric inspection system according to claim 1, wherein the marker unit is disposed on the underside of the fabric, facing the damage detection unit disposed on the upper surface of the fabric with the fabric at the center. At least one sensor unit is further provided in front of the marker unit in a winding direction of the fabric, the sensor unit being spaced apart from the marker unit at a horizontal interval.
The continuous sheet-shaped fabric inspection system according to claim 1 , wherein the sensor unit includes a sensor that detects foreign matter contained in the fabric. The continuous sheet-shaped fabric inspection system according to claim 1, further comprising a management server that analyzes and classifies the measured damage information in real time based on the reference damage information, and generates the damage result information including a fabric cutting signal that causes the cutting unit to cut the fabric in a width direction intersecting with the longitudinal direction when the cumulative damage score accumulated in response to the measured damage information is equal to a preset reference cumulative score and the cumulative damage length is equal to a preset reference cumulative length. A method for inspecting a continuous sheet-shaped fabric, the method comprising:
When the wound fabric is transported through a transport conveyor, the fabric is recognized in a non-contact manner above the transport conveyor to determine whether the fabric is damaged and generate measurement damage information;
analyzing the measured damage information and if damage occurs on the fabric, touching the surface of the fabric to display a defect mark on the location of the damage on the fabric;
analyzing the measured damage information in real time based on reference damage information, and classifying the measured damage information based on reference damage information; and generating damage result information including a fabric cutting signal for cutting the fabric in a width direction intersecting with a longitudinal direction when a damage cumulative length is equal to a predetermined reference cumulative length in a state where a damage cumulative score accumulated corresponding to the measured damage information is equal to a predetermined reference cumulative score. The step of generating measured damage information comprises:
obtaining fabric document information, the fabric document information including at least one of the following information: fabric shape, area, color, label, size, thickness, characteristic, type, fabric characteristic, fabric type, and weaving form;
Obtaining image information of the fabric, taking into consideration at least one of an angle, a contrast, a distance, a brightness, and a feed speed from a surface of the fabric;
acquiring electromagnetic wave information for the terahertz waves transmitted and reflected from the fabric;
comparing and analyzing the simultaneously received texture document information, image information, and the electromagnetic wave information to eliminate redundant data and generate a high-resolution measurement image;
and analyzing the measured image based on the reference damage information to generate measured damage information. checking the number of defective marks on the cut fabric;
If the cumulative mark number of the cut fabric is equal to or smaller than a preset reference mark number based on the reference damage information, checking the cut length of the cut fabric;
The method for inspecting fabric in a continuous sheet form according to claim 9, further comprising the step of generating fabric grade information using the cut length and the accumulated mark number based on the reference damage information. A computer program stored on a computer-readable recording medium so as to be able to execute the method according to any one of claims 9 to 11 in combination with a computer that is hardware.