KR101968252B1 - A needle error detection appratus for weaving loom - Google Patents

Abstract

The present invention relates to an apparatus for detecting a loom needle error. According to the present invention, an imaging device for photographing a needle of a loom 10 and transmitting a current image image (hereinafter, referred to as a current needle image) of the photographed needle ( The needle region 20 is set to correspond to the needles of the loom 10 and one-to-one, and the needle region 20 preset with the current needle image received from the imaging device 120 is set. Including a needle error detector 110 to obtain an image of the needle area 20 by matching and to detect the deformation or cutting of the needle of the weaving machine 10 (hereinafter referred to as needle error) based on the brightness of the acquired image It is characterized in that it is configured, according to this, there is an advantage that can easily and accurately detect the error of the needle.

Description

Loom needle error detection device {A NEEDLE ERROR DETECTION APPRATUS FOR WEAVING LOOM}

TECHNICAL FIELD The present invention relates to a weaving machine, and more particularly, to a weaving machine needle error detecting apparatus adapted to be able to detect breakage, cutting, breakage, etc. of a weaving needle in a reliable and simple manner.

In general, looms are machines for weaving fabrics using warp and weft yarns and are currently used by most weaving, weaving or wool companies.

Loom needles are mounted to the needle barrel inside the loom, the loom is generally composed of two needle barrels and more than 80 needles are installed in one needle barrel.

As such, in the current technology of mechanically weaving fabrics using a weaving machine, if there is an abnormality in the needle (needle), which is a major part of the weaving machine, it checks for the abnormality depending on the naked eye or the sense of the work manager. It is true.

Therefore, the managers resided at each loom and checked for abnormalities of the loom. Therefore, there was a burden on labor costs of the loom managers, and also depended on the senses and experiences of the looms.

The technique for solving such a conventional problem

It is known a "weaving machine monitoring and management system based on IOT platform" Patent No. 10-1616413 (published: April 29, 2016).

Since the technology according to the registered patent No. 10-1616413 is described in the registered patent publication detailed description thereof will be omitted.

By the way, the technique according to Korean Patent No. 10-1616413 is to compare and analyze the image image itself as a method of determining the abnormality of the needle, in this case, had to have the image image for each needle, the pre-stored image image and shooting The implementation of a program for the comparative analysis of the image of a needle is costly and complicated, and there are many difficulties in commercializing it.

Document 1 Publication No. 10-2014-0030305 (published: March 11, 2014) Document 2. Publication No. 10-2004-0026642 (published: March 31, 2004) Document 3. Patent Application Publication No. 10-1616413 (Announcement date: April 29, 2016)

The present invention was created to solve the problems of the prior art as described above, the object of the loom needle error detection apparatus according to the present invention,

First, if the needle of the weaving machine is in a deformed state, for example bent or cut or broken, the needle area can be set and the error of the needle can be detected based on the brightness difference in each area,

Secondly, it enables simple and reliable detection of needle errors.

Third, when the loom operates, the needle vibrates. By installing an image pickup device to vibrate with the vibrating needle, it is possible to correct an error in the imaging of the image due to the vibration of the needle. It is an object of the present invention to provide a loom needle error detection device suitable for making it possible to increase the reliability of image photographing.

The loom needle error detection device of the present invention for achieving the above object is an image pickup device for photographing the needle (needle) of the loom, and transmitting the current image image (hereinafter referred to as the current needle image) of the needle, A needle area is set to correspond to each needle in a one-to-one correspondence, an image of the needle area is obtained by matching a current needle image received from the imaging device with the preset needle area, and based on the brightness of the acquired image. And a needle error detector for detecting deformation or cutting of the needle of the loom (hereinafter referred to as needle error).

In the loom needle error detection device of the present invention, the needle error detector corresponds to each needle of the loom one-to-one, and a needle area is set, and the needle area in which the needle area is preset with the current needle image received from the imaging device. And a program storage unit for acquiring an image corresponding to the needle region, detecting a needle error of the loom based on the brightness of the obtained image, executing a program stored in the program storage unit, Characterized in that it comprises a control unit for outputting a warning light driving control signal.

In the loom needle error detection device of the present invention, in the program storage unit, the needle area is set in one-to-one correspondence with each needle of the loom 10 (S710), and the current needle of the needle photographed by the imaging device 120. Acquiring an image corresponding to the needle region by matching an image with the preset needle region (S720); comparing the current brightness with a reference brightness value of the acquired image, and if the current brightness value is greater than the reference brightness value, the normal value is normal. If it is determined that the current brightness value is less than the reference brightness value, it is characterized in that the loom needle error detection program comprising the step (S750) of determining that the error is recorded.

The inventors of the present invention loom needle detection, after the step of acquiring the image (S720), the step of converting the acquired image into a black and white image (S730) and the step of extracting the edge of the converted black and white image (S740) is performed The error determining step (S750) may compare the current brightness value and the reference brightness value of the extracted edge image to process a normal state if the current brightness value is greater than the reference brightness value, and to process an error state if it is dark. It is done.

The loom needle error detection device of the present invention is configured to further include the step (S760) of storing the error determination data in the error determination step (S750), the steps S720 to S760 is repeatedly performed a plurality of times (S770) Calculating a current average value of the error determination data stored by the error determination data storing step (S780); comparing the current average value with a reference average value (S785); and when the current average value is larger than the reference average value, If it is determined that the needle error, and if it is not large, it is characterized in that it comprises a step (S790) is further determined to be 'needle normal'.

In the loom needle error detecting apparatus of the present invention, the step of setting the needle region includes the step of loading an image image of the needle photographed by the image pickup device (hereinafter, 'region setting needle image') at a reference position (S810); Inputting the area setting data value (S820), and inputting the area setting data value one-to-one to each needle of the needle image image, and setting the number of needle areas corresponding to the number of needles. It features.

The loom needle error detection device of the present invention comprises a base for mounting the loom, and an image pickup device mount for being installed in the base and vibrating with the weaving machine to reduce the image shooting error due to vibration, the image pickup device is It is characterized in that it is installed on the image pickup device mounting table.

The loom needle error detection device of the present invention comprises the left and right pairs of legs in which the imaging device mounting stand is erected to the base, and an imaging device mounting rod provided across the leg at an upper end of the leg, wherein the imaging is performed. The device is characterized in that it is installed in the image pickup device mounting rod.

The loom needle error detection device of the present invention is the leg, the leg is composed of a leg plate mounted on the base, a leg rod upright on the leg plate, and an upper plate installed on the upper end of the leg rod, and is upright on the upper plate, The upper end of the image pickup device mounting rod is fastened to the image pickup device mounting rod is characterized in that it is configured to further comprise a gap to be spaced apart by a set distance.

The loom needle error detection device of the present invention corresponds to an LED substrate provided on the image pickup device mounting rod directly below the image pickup device, an LED mounted on the LED substrate to irradiate light with the needle of the loom, and the image pickup device. It is characterized in that the through-hole is formed directly below the image pickup device so that the light passing hole for passing the light through which the image pickup device can image the needle.

The loom needle error detection method of the present invention for achieving the above object, the imaging device photographing the needle of the loom (S610), and the current image image of the needle photographed by the imaging device is transmitted to the needle error detector And a needle error detector executing a needle error detection program stored in the internal memory to detect whether there is an error needle, and if there is an error by the detection, the loom drive controller provided in the loom. And outputting a stop control signal.

The loom needle detection method of the present invention is characterized in that it further comprises the step of outputting a warning light operation control signal to the warning light control unit for operating the warning light when there is an error by the determination.

In the loom needle error detection method of the present invention, the step of detecting whether there is an error of the needle, one to one corresponding to each needle of the loom set the needle area, the current image image of the needle photographed by the imaging device (hereinafter, Current needle image) and the preset needle area to obtain an image corresponding to the needle area, and detect an error of the corresponding needle based on the brightness of the acquired image.

The loom needle error detection method of the present invention comprises the steps of the needle error detection program corresponding to each needle contained in the needle barrel of the loom in one-to-one correspondence with the needle area is set, the current image image of the needle photographed by the imaging device and previously set Acquiring an image corresponding to the needle region by matching the needle region (S720), comparing the current brightness with the reference brightness value of the acquired image, and determining that the current brightness value is greater than the reference brightness value, If the current brightness value is smaller than the reference brightness value, it is determined that an error (S750).

In the loom needle detection method of the present invention, after the step of acquiring the image (S720), the step of converting the acquired image into a black and white image (S730), and the step of extracting the edge of the converted black and white image (S740) further The error determination step (S750) includes comparing the current brightness value and the reference brightness value of the extracted edge image to process the normal state if the current brightness value is greater than the reference brightness value, and to process the error state if it is dark. Characterized in that.

The loom needle error detection method of the present invention is configured to further include the step (S760) of storing the error determination data in the error determination step (S750), the steps S720 to S760 is repeatedly performed a plurality of times, the error Calculating a current average value of the error determination data stored by the determination data storing step; comparing the current average value with a reference average value; and when the current average value is larger than the reference average value, it is determined as a 'needle error' and is not large. In this case, the method may further include determining that the needle is normal.

In the loom needle error detection method of the present invention, the step of setting the needle area, the step of loading the image image of the needle (hereinafter referred to as the 'zone setting needle image') photographed by the image pickup device at the reference position, and the area setting data When the value is input, and the area setting data value is input, it is characterized in that it comprises a step of setting the number of the needle area corresponding to the number of the needle corresponding to each needle of the needle image image one-to-one.

The loom needle error detection device of the present invention having the configuration as described above has the following advantages.

First, when the needle of the weaving machine has an error such as when the needle is deformed with bending or when it is cut or broken, there is an effect of setting the needle area and detecting the error of the needle based on the brightness difference in each area. .

Second, as described above, there is an effect that the error of the needle can be detected simply and reliably.

Third, when the loom operates, the needle vibrates. By installing the image pickup device to vibrate with the vibrating needle, there is an effect of correcting an error in video image photographing caused by the vibration of the needle. There is an effect that can increase the reliability of photographing the needle image.

1 is a block diagram of a loom needle error detection apparatus according to an embodiment of the present invention.
FIG. 2 is a detailed block diagram of the needle error detector in FIG. 1.
3 is a main configuration diagram of a loom needle error detection apparatus according to an embodiment of the present invention.
4 is a perspective view of the image pickup device mounting stand 160 in FIG. 3.
FIG. 5 is a bottom view of the LED substrate 171 provided in the imaging device mounting stand 160 in FIG. 4.
6 is a flowchart of a loom needle error detection method according to an embodiment of the present invention.
7 is a flowchart of a loom needle error detection program according to an embodiment of the present invention.
FIG. 8 is a detailed flowchart of the needle region setting step S710 of FIG. 7.
9 is an exemplary view in which the needle region 20 is set on the needle of the loom.

The following will be described in detail with reference to the accompanying drawings a preferred embodiment of the loom needle error detection device of the present invention.

As shown, the loom needle error detection apparatus according to an embodiment of the present invention, photographing the needle (needle) of the loom 10, and transmits the current image image of the needle (hereinafter, the current needle image) The needle region 20 is set in one-to-one correspondence with the image pickup device 120 and the needles of the weaving machine 10, and the needle area 20 is set in advance with the current needle image received from the image pickup device 120. 20) to obtain an image of the needle region 20 (specifically, the image in the needle region 20), and to deform or cut the needle of the loom 10 based on the brightness of the acquired image (hereinafter referred to as needle error). It is characterized in that it comprises a needle error detector 110 for detecting.

When there is an error needle, the needle error detector 110 outputs a loom driving stop control signal to the loom driving controller 131, and the loom 10 which receives it from the loom driving controller 131 stops operation.

The loom driving controller 131 may be provided together with the loom 10 or may be implemented in a separate configuration.

The needle error detector 110 transmits the needle state information (normal or error) to the manager computer 140.

In addition, the needle error detector 110 outputs a beacon driving control signal to the beacon controller 132 when the error needle is present, and the beacon controller 132 receives the light and operates the beacon 133.

In the loom needle error detection device according to an embodiment of the present invention, the needle error detector 110 corresponds to each needle of the loom 10 one-to-one, and the needle area 20 is set, and the imaging device The image corresponding to the needle region is obtained by matching the current image image of the needle received from the needle with the preset needle region 20, and the needle error of the weaving machine 10 is based on the brightness of the acquired image. And a control unit 112 for executing a program stored in the program storage unit 114 and outputting a loom driving stop control signal and a warning lamp driving control signal. do.

In addition, the needle error detector 110 should be provided with an interface for transmitting and receiving a video image and a signal.

In the loom needle error detection apparatus according to an embodiment of the present invention, in the program storage unit 114, the needle region 20 is set to correspond to each needle of the loom 10 one-to-one (S710) and Acquiring an image corresponding to the needle region by matching the current needle image photographed by the imaging device 120 with the preset needle region 20 (S720); A loom needle error detection program comprising the step of comparing the reference brightness value and determining that the current brightness value is greater than the reference brightness value is normal and determining that the current brightness value is less than the reference brightness value is an error (S750) is recorded. It is characterized by being.

In the loom needle error detection apparatus according to an embodiment of the present invention, after performing the step (S720) of acquiring an image, converting the acquired image into a black and white image (S730) and extracting an edge of the converted black and white image. Step S740 is performed, and the error determining step S750 compares the current brightness value and the reference brightness value of the extracted edge image, and if the current brightness value is greater than the reference brightness value, the steady state (eg, binary data 1). If it is dark, it is characterized by processing in an error state (for example, binary data 0).

In the loom needle error detection apparatus according to an embodiment of the present invention, further comprising the step (S760) of storing the error determination data (binary data of the normal state and error state) in the error determination step (S750) In step S720, the image acquiring step of the step S720 and the step of storing the error determination data of step S760 are repeatedly performed (S770), and calculating the current average value of the error determination data stored by the error determination data storing step (S780). And comparing the current average value with the reference average value (S785), and if the current average value is larger than the reference average value, determine that the error is 'needle error', and if the current average value is not greater than the reference average value, determine that the needle is normal. Step (S790) is characterized in that it further comprises.

In the loom needle error detection apparatus according to an embodiment of the present invention, the step of setting the needle region (S710), the imaging device 120 photographs the needle of the loom 10, the imaging device 120 The image image of the needle (hereinafter referred to as 'area setting needle image') is loaded by the control unit 112 to a reference position of a specific sector of the internal memory (S810) and the area setting data value is inputted In operation S820, when the region setting data value is input, a plurality of needle regions equal to the number of needles are set in one-to-one correspondence to each needle of the needle image image.

The input of the area setting data value may be input by including an input unit in the needle error detector 110 itself, but may be implemented in the needle error detector 110 by using an area setting terminal (not shown) (for example, a smartphone or a PC). ] Can be connected and the area setting data value can be input through this area setting terminal.

When the area setting terminal is connected to the needle error detector 110 by wire or wirelessly, the area setting terminal connected to the needle error detector 110 by the controller 112 is loaded with the 'area setting needle image' loaded at the reference position. The needle region 20 may be set by being displayed on the display unit of the display unit and inputting region setting data values from an input unit (not shown) of the region setting terminal.

The area setting data value is, for example, a reference coordinate value and a height and width value and the number of areas.

If the reference coordinate value (for example, the upper left coordinate value), the height of the entire region, the width of the entire region, and the number of regions (for example, 40 as shown in FIG. 9) are input, the region is set in accordance with the corresponding image.

9 shows an example in which this area is set to the user through the display unit.

As shown in FIG. 9, there are 40 needle regions 20 on the upper side, 40 needle regions 20 on the lower side, and a needle exists in each needle region 20, and the 40 needle regions One imaging device 120 is in charge of photographing each of the forty needles in the interior.

By the way, there are three black portions in the upper needle region, and the needle region is lost and is shown in black. In the case of this needle region, binary data will be treated as zero.

In the loom needle error detection device according to an embodiment of the present invention, the base 150 for mounting the loom 10, and the base 150 is installed on the base 150 to vibrate together with the loom 10, resulting from the vibration An imaging device mounting stand 160 is further included to reduce an imaging error, and the imaging device 120 is installed on the imaging device mounting stand 160.

Since the imaging device 120 moves together with the weaving machine 10, the needle imaging error due to vibration can be reduced.

In the loom needle error detection apparatus according to an embodiment of the present invention, the image pickup device mounting table 160, a pair of left and right legs 161 standing upright on the base 150, and the upper end of the leg 161 And an image pickup device mounting rod 162 installed across the leg 161, and the image pickup device 120 is installed on the image pickup device mounting rod 162.

In the loom needle error detection device according to an embodiment of the present invention, the leg 161, the leg is a leg plate (161a) is mounted to the base 150, and a leg rod (upright leg leg 161a ( 161b and an upper plate 161c installed at an upper end of the leg rod 161b, upright to the upper plate 161c, and an image pickup device mounting rod 162 is fastened to an upper end from the leg 161. The image pickup device mounting rod 162 is characterized in that it is configured to further include a gap adjusting rod 163 to be spaced apart by a set distance.

In the loom needle error detection device according to an embodiment of the present invention, the LED substrate 171 and the LED substrate 171 which is installed on the image pickup device mounting rod 162 directly below the image pickup device 120, LED 172 which is installed and irradiates light with the needle of the loom 10, and light corresponding to the imaging device 120 to be penetrated directly below the imaging device 120 so that the imaging device can photograph the needle. Light passing hole 173 for passing through is further characterized in that it is configured to be included.

According to this, since the light of the LED 172 brightens the needle, it is possible to take an accurate image, thereby obtaining an image more accurately.

The following describes a method of detecting an error of the loom needle using the loom needle error detecting apparatus according to an embodiment of the present invention.

The imaging device 120 photographs the needle of the loom 10 (S610).

The current image image (current needle image) of the needle photographed by the imaging device 120 is transmitted to the needle error detector 110 (S620).

The needle error detector 110 executes the needle error detection program stored in the internal memory to detect whether there is an error needle (S630).

If there is an error by the detection, the loom stop control signal is output to the loom driving controller 131 provided in the loom (S640).

If there is an error by the detection, the beacon operation control signal is output to the beacon control unit 112 for operating the beacon 133 (S640).

Detecting whether there is an error needle (S630) corresponds to each needle contained in the needle barrel of the loom one-to-one to set the needle region 20, the current image image of the needle photographed by the imaging device 120 (Hereinafter, referred to as a current needle image) and the preset needle region 20 to obtain an image corresponding to the needle region, and is performed by detecting an error of the corresponding needle based on the brightness of the acquired image. It is characterized by.

Detecting whether there is a needle having an error (S630) is performed by the execution of a needle error detection program, the needle error detection program is, specifically, in the following order.

First, step S710 is performed in which the needle region 20 is set in advance by one-to-one correspondence to each needle contained in a needle barrel (not shown) of the loom.

The step S710 of setting the needle region is implemented by sequentially performing the following steps.

The image image of the needle photographed by the imaging device 120 (hereinafter, 'region setting needle image') is loaded by the controller 112 at a reference position of a specific sector of the internal memory (S810).

Thereafter, step S820 of inputting an area setting data value is performed.

The input of the region setting data value may be input by including an input unit and a display unit in the needle error detector 110 itself, but by connecting a region setting terminal (not shown) to the needle error detector 110 and connecting the region setting terminal. You can also enter the area setting data value.

The region setting needle image loaded at the reference position is displayed on the display unit of the region setting terminal connected to the needle error detector 110 by the controller 112, and the region setting data value is input from the input unit of the region setting terminal. Can be set.

The area setting data value is, for example, a reference coordinate value and a height and width value and the number of areas.

If the reference coordinate value (for example, the upper left coordinate value), the height of the entire region, the width of the entire region, and the number of regions (for example, 40 as shown in FIG. 9) are input, the region is set in accordance with the corresponding image.

9 shows an example in which this area is set to the user through the display unit.

When the area setting data value is input, the number of needle areas corresponding to the number of needles is set in one-to-one correspondence with each needle of the needle image image (S830).

In the state where the needle region is set as described above, the loom 10 operates to detect whether the needle in the process of weaving is in error.

The image corresponding to the needle region is obtained by matching the current image image (hereinafter, the current needle image) of the needle photographed by the imaging device 120 with the preset needle region 20 (S720).

After the step of acquiring the image (S720), the step (S730) of converting the acquired image into a black and white image is performed.

Extracting an edge of the converted black and white image (S740) is performed.

This is to make the image sharper and extract the current brightness value accurately.

In operation S750, when the current brightness value is greater than the reference brightness value and the current brightness value is greater than the reference brightness value, it is determined that the current brightness value is greater than the reference brightness value. .

In the error determining step (S750), the current brightness value of the extracted edge image and the reference brightness value are compared, and if the current brightness value is larger than the reference brightness value, the normal state (binary data 1) is processed. Data 0).

The error determination step of step S750 is to determine whether there is an error with only one image value.

Incidentally, in order to improve the reliability of the judgment, a plurality of times (for example, 30 times per minute) are performed, and the error is judged based on the average value of the plurality of performances.

The step S760 of storing error determination data (normal state and binary data of an error state) in the error determination step S750 is performed.

Steps S720 to S760 are repeated a plurality of times n times (for example, as a natural number larger than 2, 30) (S770).

The step S780 of calculating the current average value of the error determination data stored by the error determination data storing step is performed.

In operation S785, the current average value and the reference average value are compared.

If the current average value is larger than the reference average value, it is determined as 'needle error', and if it is not large, it is determined as 'needle normal' (S790).

If it is determined that the needle error, the control unit 112 outputs the loom driving stop control signal to the loom driving controller 131, and outputs the warning lamp driving control signal to the beacon controller 132.

Then, the manager computer 140 outputs the needle state information.

As described above, a preferred embodiment according to the present invention has been described, and the fact that the present invention can be embodied in other specific forms in addition to the above-described embodiments without departing from the spirit or scope thereof is known to those skilled in the art. It is obvious to those who have it.

Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive, and thus, the present invention is not limited to the above description but may be modified within the scope of the appended claims and their equivalents.

10: loom 110: needle error detector
20: needle area 112: control unit
114: program storage unit 120: image pickup device
131: loom driving controller 132: warning light controller
130: warning light 140: administrator computer
150: base 160: image pickup device mounting table
161: leg 161a: leg plate
161b: leg rod 161c: top plate
162: image pickup device mounting rod 163: gap adjustment rod
171: LED substrate 172: LED
173: light passing hole

Claims (4)

An imaging device 120 which photographs a needle of the loom 10 and transmits a current video image of the photographed needle (hereinafter referred to as a "current needle image"),
The needle region 20 is set in correspondence with each needle of the loom 10 in a one-to-one manner, and the needle region 20 is matched with the current needle image received from the imaging device 120 and the preset needle region 20. A needle error detector 110 which acquires the image of 20 and detects deformation or cutting of the needle of the loom 10 (hereinafter referred to as "needle error") based on the brightness of the acquired image. Become,
The needle error detector 110,
The needle region 20 is set in correspondence with each needle of the loom 10 in a one-to-one manner, and the needle region 20 is matched with a preset needle image received from the imaging device 120. A program storage unit 114 for acquiring an image corresponding to the needle region and detecting a needle error of the loom 10 based on the brightness of the acquired image;
And a controller 112 for executing a program stored in the program storage unit 114 and outputting a loom driving stop control signal and a warning lamp driving control signal.
The program storage unit 114,
In step S710, the needle region 20 is set to correspond to each needle of the weaving machine 10 one by one,
Acquiring an image corresponding to the needle region by matching the current needle image photographed by the imaging device 120 with the preset needle region 20 (S720);
Converting the acquired image into a black and white image (S730),
Extracting an edge of the converted black and white image (S740);
Comparing the current brightness and the reference brightness value of the acquired image, if the current brightness value is greater than the reference brightness value is determined to be normal, if the current brightness value is less than the reference brightness value is determined to be an error, but the current brightness value of the extracted edge image A loom needle error detection program comprising an error determination step (S750) of comparing the reference brightness value with the reference brightness value and processing if the current brightness value is greater than the reference brightness value and processing the error state if the current brightness value is darker, the error state (S750) is recorded. Loom needle error detection apparatus.
The method according to claim 1,
A base 150 for mounting the loom 10,
Installed on the base 150 to vibrate with the weaving machine 10, it is configured to further include an image pickup device mounting unit 160 for reducing the imaging error due to vibration,
Loom needle error detection device, characterized in that the image pickup device 120 is installed on the image pickup device mounting table (160).
The method according to claim 2,
The imaging device mounting stand 160,
A pair of left and right legs 161 standing upright on the base 150,
It is configured to include an image pickup device mounting rod 162 installed across the leg 161 at the upper end of the leg 161,
The imaging device 120 is installed on the imaging device mounting rod 162,
The leg 161 is,
The leg is a leg plate (161a) mounted to the base 150,
A leg rod 161b standing upright on the leg plate 161a,
It consists of an upper plate (161c) which is installed on the upper end of the leg rod (161b),
The upper plate 161c, and the upper end further includes an interval adjusting rod 163 is fastened to the image pickup device mounting rod 162 is spaced apart from the leg 161 by a set distance from the leg 161, Loom needle error detection device, characterized in that.
The method according to claim 3,
An LED substrate 171 installed on the imaging device mounting rod 162 directly below the imaging device 120;
An LED 172 installed on the LED substrate 171 and irradiating light with the needle of the loom 10;
And a light passing hole 173 corresponding to the image pickup device 120 so as to penetrate directly under the image pickup device 120 so that the image pickup device can pass the light for photographing the needle. Loom needle error detection device.

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