KR20180067219A - A needle error detection appratus for weaving loom - Google Patents

Abstract

The present invention relates to a loom needle error detection apparatus, comprising: an imaging device (120) for imaging a needle of a loom (10) and transmitting a current image of the imaged needle (hereinafter, a current needle image); and a needle error detector (110) having a needle area (20) set in one-to-one correspondence to each needle of the loom (10), obtaining an image of the needle area (20) by matching the current needle image received from the imaging device (120) with the preset needle area (20), and detecting deformation or cutting of the needle of the loom (10) (hereinafter, referred to as a needle error) based on brightness of the obtained image. Therefore, it is possible to easily and accurately detect an error of a needle.

Description

[0001] A NEEDLE ERROR DETECTION APPRATUS FOR WEAVING LOOM [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loom, and more particularly, to a loom needle error detecting device that is suitable for detecting broken, cut, broken or the like of a loom needle in a reliable and simple manner.

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

The weaving machine needle is attached to the needle barrel inside the weaving machine. Generally, the weaving machine is composed of two needle barrel, and more than 80 needles are installed in one needle barrel.

In the present technology of knitting a fabric using a weaving machine, if there is an abnormality in a needle (needle) which is a main component of a weaving machine, it is checked whether or not the needle It is true.

Therefore, since the manager resides in each loom and confirms the abnormality of the loom, there is a burden on the labor cost of the loom manager and depend on the sense or experience of the manager.

A technique for solving such a conventional problem

"IOT platform-based loom monitoring and management system" by Registration No. 10-1616413 (Published on Apr. 29, 2016) is known.

Since the technology according to the above-mentioned Japanese Patent No. 10-1616413 is described in the patent publication, a detailed description will be omitted.

However, according to the technique of Patent No. 10-1616413, a method of judging the abnormality of the needle is to compare and analyze the image itself. In this case, it is necessary to have a video image for each needle, The implementation of the program for comparative analysis of the image of a needle is costly and complicated and it is difficult to commercialize it realistically.

Literature 1. Published Japanese Patent Application No. 10-2014-0030305 (published on March 11, 2014) Document 2. Published Japanese Patent Application No. 10-2004-0026642 (Disclosure Date: March 31, 2004) Literature 3. Patent Registration No. 10-1616413 (Published on Apr. 29, 2016)

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a weft-

First, when there is an error such as when the needle of the loom is in a deformed state with warping or when it is cut or broken, the needle area is set and the needle error can be detected based on the brightness difference in each area,

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

Thirdly, when the loom is operated, the needle vibrates. By providing an image pickup element so as to vibrate together with the vibrating needle, it is possible to correct the error of the imaging of the image by the vibration of the needle, And to provide a woven needle error detecting apparatus which is suitable for enhancing the reliability of image photographing.

In order to accomplish the above object, the present invention provides a woven needle error detecting apparatus comprising: an image pickup element for picking up a needle of a loom, transmitting a current image of the taken needle (hereinafter referred to as a current needle image) A needle area corresponding to each needle is set in a one-to-one correspondence with the current needle image received from the image pickup element and the needle area previously set is matched to acquire an image of the needle area and based on the brightness of the acquired image And a needle error detector for detecting a deformation or cutting of the needle of the loom (hereinafter referred to as a needle error).

The present invention is directed to a woven needle error detecting apparatus which is characterized in that the needle error detector is provided with a needle region corresponding to each needle of the loom in a one-to-one correspondence with the current needle image of the needle received from the image sensor, A program storage unit for acquiring an image corresponding to the needle area and detecting a needle error of the loom based on the brightness of the acquired image, a program storage unit for executing a program stored in the program storage unit, And a control unit for outputting a beep light driving control signal.

In the woven needle error detecting apparatus according to the present invention, the program storage section may include a step S710 of setting a needle area corresponding one-by-one to the needles of the loom 10, (S720) of obtaining an image corresponding to the needle area by matching the image with the previously set needle area, comparing the current brightness of the acquired image with the reference brightness value, and if the current brightness value is larger than the reference brightness value, And a step S730 of determining that an error is present if the current brightness value is smaller than the reference brightness value.

The woven needle error detecting apparatus according to the present invention performs step S730 of converting an obtained image into a black and white image and performing step S740 of extracting an edge of the converted black and white image after performing step S720 of acquiring an image In the error determination step S750, the current brightness value of the extracted edge image is compared with the reference brightness value. If the current brightness value is larger than the reference brightness value, the error is determined to be a normal state. .

The apparatus for fabricating loom needles according to the present invention further includes a step S760 of storing error determination data in the error determination step S750, and the steps S720 through S760 are repeated a plurality of times in operation S770. A step S780 of calculating a current average value of the error judgment data stored in the error judgment data storing step, a step S785 of comparing the current average value with a reference average value, and if the current average value is larger than the reference average value, (S790) that the needle is determined to be 'needle error', and if not, it is determined that the needle is 'normal'.

In the woven needle error detecting apparatus of the present invention, the step of setting the needle area includes a step (S810) of loading a video image of a needle taken by an image pickup element (hereinafter referred to as an 'area setting needle image' A step S820 of inputting an area setting data value and a step of setting a number of needle areas corresponding to the number of needles one by one to each needle of the needle image image when the area setting data value is inputted .

A woven needle error detecting apparatus according to the present invention comprises a base for placing a weaving machine and an imaging element mounting block installed on the base for vibrating together with the weaving machine to lower imaging errors due to vibration, And is mounted on an image pickup device mounting base.

The woven needle error detecting device according to the present invention is characterized in that the imaging element mounting base includes a pair of left and right legs standing upright on the base and an imaging element mounting bar provided across the legs from the upper end of the leg, And the element is installed in the imaging element mounting rod.

A woven needle error detecting apparatus according to the present invention is characterized in that the leg is constituted by a leg plate mounted on a base, a leg bar standing upright on the leg plate, and an upper plate provided on the upper end of the leg bar, And an interval adjusting rod which is fastened to an upper portion of the imaging element mounting bar so that the imaging element mounting rod is spaced from the leg by a predetermined distance.

A woven needle error detecting apparatus according to the present invention comprises an LED substrate mounted on the imaging element mounting bar directly below the imaging element, an LED provided on the LED substrate and illuminating the needle with a needle of a loom, And a light passing hole formed to penetrate the imaging element directly below the imaging element so that the imaging element passes light capable of taking a picture of the needle.

According to still another aspect of the present invention, there is provided a method for detecting a needle for a woven fabric needle, comprising the steps of (S610) photographing an needle of a woven machine, And a needle error detecting program stored in an internal memory to execute a needle error detecting program to detect whether or not there is an erroneous needle. When there is an error, the loom is driven by a loom controller provided in the loom, And outputting a stop control signal.

The woven needle error detecting method according to the present invention is characterized in that it further comprises a step of outputting a beacon operation control signal to a beacon controller for operating a beacon in the event of an error in accordance with the determination.

The method for detecting a needle for weaving needle according to the present invention is characterized in that the step of detecting whether or not there is an erroneous needle comprises the steps of setting a needle area in correspondence with each needle of the loom one by one and detecting a current image of the needle The current needle image is matched with the previously set needle area to acquire an image corresponding to the needle area, and an error of the needle is detected based on the brightness of the acquired image.

A method for detecting a needle thread error in a weaving machine according to the present invention is characterized in that the needle error detecting program includes a step of setting a needle area in a one-to-one correspondence with each needle contained in a needle cylinder of a weaving machine, (S720); comparing the current brightness of the acquired image with a reference brightness value to determine whether the current brightness value is greater than the reference brightness value, and if the current brightness value is greater than the reference brightness value, And determining that the current brightness value is an error if the current brightness value is smaller than the reference brightness value (S750).

The woven needle error detecting method of the present invention is characterized in that after performing the step S720 of obtaining an image, a step S730 of converting the obtained image into a monochrome image and a step S740 of extracting an edge of the converted monochrome image The error determination step S750 compares the current brightness value of the extracted edge image with the reference brightness value, and if the current brightness value is greater than the reference brightness value, the normal brightness state value is processed. If the current brightness value is greater than the reference brightness value, .

The woven needle error detecting method according to the present invention further includes a step (S760) of storing error judgment data in the error judging step (S750), wherein the steps S720 to S760 are repeated a plurality of times, Calculating a current average value of the error judgment data stored in the judgment data storing step; comparing the current average value with a reference average value; and if the current average value is larger than the reference average value, And a step of determining that the needle is normal if the needle is normal.

In the woven needle error detecting method of the present invention, the step of setting the needle area includes the steps of loading a video image of a needle taken by the image pickup element (hereinafter referred to as 'area setting needle image') into a reference position, And a step of setting a number of needle areas corresponding to the number of needles one by one to each needle of the needle image image when the area setting data value is inputted.

The woven needle error detecting apparatus of the present invention having the above-described structure has the following effects.

First, when there is an error such as when the needle of the loom is in a deformed state with warping or when it is cut or broken, it is effective to set the needle area and to detect the needle error based on the brightness difference in each area .

Second, the error of the needle can be detected simply and reliably as described above.

Thirdly, when the loom is operated, the needle vibrates. By providing an image pickup element so as to vibrate together with the vibrating needle, there is an effect that the error of the imaging of the image by the vibration of the needle can be corrected, The reliability of the imaging of the image of the needle can be improved.

1 is a block diagram of a woven needle error detecting apparatus according to an embodiment of the present invention.
2 is a detailed block diagram of the needle error detector of FIG.
3 is a block diagram of a woven needle error detecting apparatus according to an embodiment of the present invention.
4 is a perspective view of the image pickup device mounting base 160 in Fig.
Fig. 5 is a bottom view of the LED substrate 171 provided in the image pickup device mounting base 160 in Fig.
6 is a flowchart of a method for detecting a loom needle error according to an embodiment of the present invention.
FIG. 7 is a flowchart of a woven needle error detecting program according to an embodiment of the present invention.
FIG. 8 is a detailed flowchart of the needle area setting step (S710) in FIG.
9 is an exemplary view in which a needle area 20 is set on a needle of a loom.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a woven needle error detecting device according to the present invention will be described in detail below with reference to the accompanying drawings.

As shown in the figure, the apparatus for detecting a woven needle needle according to an embodiment of the present invention is configured to take a needle of a loom 10 and to transmit a current image of the taken needle (hereinafter referred to as a current needle image) The needle area 20 is set so as to correspond one-to-one to the needles of the image pickup device 120 and the loom 10. The needle area 20 is set in correspondence with the current needle image received from the image pickup device 120, 20) to obtain an image of the needle region 20 (specifically, an image in the needle region 20), and to deform or cut the needles of the loom 10 based on the brightness of the acquired image And a needle error detector 110 for detecting a needle error.

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 receiving the loom driving stop signal from the loom driving controller 131 stops its operation.

The loom driving controller 131 may be incorporated in the loom 10 or may be implemented as a separate structure.

Then, the needle error detector 110 transmits the status information (normal or error) of the needle to the manager computer 140.

If there is an error needle, the needle error detector 110 outputs a warning light drive control signal to the warning light controller 132, and the warning light controller 132 receives the error signal and operates the warning light 133. [

In the weft needle error detecting apparatus according to an embodiment of the present invention, the needle error detector 110 is provided with a needle region 20 corresponding to one needle of each needle of the loom 10, The needle image of the needle 10 is obtained on the basis of the brightness of the obtained image by matching the current image of the needle received from the needle 120 with the predetermined needle area 20, And a control unit 112 for executing a program stored in the program storage unit 114 and outputting a woofer driving stop control signal and a beep light driving control signal, do.

Needless to say, the needle error detector 110 must include an interface for transmitting and receiving a video image and a signal.

In the weaving machine needle error detecting apparatus according to an embodiment of the present invention, the program storage unit 114 may include a step S710 in which the needle region 20 is set in one-to-one correspondence with the needles of the weaving machine 10 A step S720 of acquiring an image corresponding to the needle area by matching the current needle image of the needle taken by the image pickup device 120 with the needle area 20 already set in step S720, Comparing the reference brightness value to determine if the current brightness value is greater than the reference brightness value and determining that the current brightness value is an error if the current brightness value is smaller than the reference brightness value (S730), a woven needle error detection program is recorded .

In the woven needle error detecting apparatus according to an embodiment of the present invention, after the step S720 of obtaining an image is performed, a step S730 of converting the obtained image into a monochrome image and a step of extracting an edge of the converted monochrome image (S740), and the error determination step S750 compares the current brightness value of the extracted edge image with the reference brightness value. If the current brightness value is greater than the reference brightness value, the normal state (e.g., binary data 1) And processes it as an error state (e.g., binary data 0) if it is dark.

In the woven needle error detecting apparatus according to an embodiment of the present invention, the step S760 may further include storing error determination data (binary data of a normal state and an error state) in the error determination step S750 In operation S770, the current average value of the error judgment data stored in the error judgment data storing step is calculated in operation S780. (S785) comparing the current average value with a reference average value, and if the current average value is greater than the reference average value, it is determined to be a needle error. If the current average value is not greater than the reference average value, (Step S790).

The step S710 of setting the needle area in the weaving machine needle error detecting apparatus according to an embodiment of the present invention includes the steps of photographing the needle of the weaving machine 10 by the image pickup element 120, (S810) in which a video image of a needle (hereinafter, referred to as an 'area setting needle image') taken at a reference position of a specific sector of the internal memory is loaded by the controller 112, Step S820, and when the area setting data value is inputted, step S830 is performed in which the number of needle areas corresponding to the number of needles is one-to-one corresponded to each needle of the needle image image.

The area setting data value may be input to the needle error detector 110 by providing an input unit to the needle error detector 110. However, the area error data may be input to the needle error detector 110 by an area setting terminal (not shown) ], And input the area setting data value through the area setting terminal.

When the area setting terminal is connected to the needle error detector 110 wirelessly or by wire, the 'area setting needle image' loaded at the reference position is transmitted to the area setting terminal (not shown) connected to the needle error detector 110 by the controller 112 (Not shown), and an area setting data value is input from an input unit (not shown) of the area setting terminal, so that the needle area 20 can be set.

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

When a reference coordinate value (e.g., coordinate value at the upper left corner), a height of the entire area, a width of the entire area, and the number of areas (for example, 40 pieces as shown in FIG. 9) are input, the area is set to match the corresponding image.

FIG. 9 shows an example of setting this area to the user through the display unit.

9, there are 40 needle regions 20 on the upper side and 40 needle regions 20 on the lower side. Needles are present for each needle region 20, and the 40 needle regions And one imaging element 120 takes charge of imaging the forty needles in the imaging device 120. [

In the needle area on the upper side, there are three black parts, and the needles are lost and appear black in the needle area. In the case of this needle area, the binary data will be processed as zero.

The apparatus for detecting a loom of a loom according to an embodiment of the present invention includes a base 150 for placing a loom 10 and a base 150 installed on the base 150 for vibrating together with the loom 10, The image pickup device 120 further includes an image pickup device mounting base 160 for lowering an image pickup error, and the image pickup device 120 is installed in the image pickup device mount 160.

Since the image pickup element 120 moves together with the loom 10, the needle shooting error due to vibration can be reduced.

The image pickup device mounting base 160 includes a pair of left and right legs 161 standing upright on the base 150 and a pair of right and left legs 161 extending upward from the top of the leg 161. [ And the imaging element mounting bar 162 installed across the leg 161 in the imaging element mounting rod 162. The imaging element mounting rod 162 is provided with the imaging element 120.

In the weft knitting needle error detecting apparatus according to the embodiment of the present invention, the legs 161 are formed such that the legs have leg plates 161a mounted on the base 150, leg bars 161a that stand upright on the leg plates 161a And an upper plate 161c provided at an upper end of the leg bar 161b and is mounted on the upper plate 161c and an imaging element mounting bar 162 is fastened to the upper end of the leg 161b And an interval adjusting rod 163 for spacing the imaging element mounting rod 162 by a predetermined distance.

The apparatus for detecting a loom of a woven needle according to an embodiment of the present invention includes an LED substrate 171 mounted on the imaging element mounting bar 162 directly below the imaging element 120, An LED 172 which is installed and irradiates light to the needle of the weaving machine 10 and a light which is formed through the lower portion of the imaging element 120 in correspondence with the imaging element 120 so that the imaging element can shoot the needle And a light passing hole 173 for allowing the light to pass therethrough.

According to this, since the light of the LED 172 brightens the needle, accurate image shooting can be performed, so that the image can be obtained more accurately.

A method for detecting an error of a loom needle using a loom needle error detecting apparatus according to an embodiment of the present invention will now be described.

The image pickup element 120 photographs the needles of the loom 10 (S610).

The current image (current needle image) of the needle taken by the imaging element 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 due to the detection, a loom stop control signal is output to the loom drive controller 131 provided in the loom (S640).

If there is an error due to the detection, the warning lamp control unit 112 for operating the warning lamp 133 outputs a warning lamp operation control signal (S640).

The step S630 of detecting whether or not there is an erroneous needle sets the needle area 20 to be one-to-one corresponded to each needle contained in the needle cylinder of the loom, (Hereinafter referred to as " needle image ") and the previously-set needle area 20 to obtain an image corresponding to the needle area, and detecting an error of the needle based on the brightness of the acquired image .

The step (S630) of detecting whether or not there is an needle with the error is performed by execution of a needle error detecting program. Specifically, the needle error detecting program is performed in the following order.

First, a step S710 is performed in which the needle area 20 is set so as to correspond one-to-one with each needle previously contained in the needle cylinder (not shown) of the loom.

The step of setting the needle area (S710) is implemented by sequentially performing the following steps.

The control unit 112 loads the image of the needle taken by the image pickup device 120 (refer to 'area setting needle image' below) at a reference position of a specific sector of the internal memory (S810).

Thereafter, step S820 in which the area setting data value is input is performed.

The area setting data value may be input to the needle error detector 110 by providing an input unit and a display unit, but it is also possible to connect an area setting terminal (not shown) to the needle error detector 110, You can also enter the area setting data value.

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

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

When a reference coordinate value (e.g., coordinate value at the upper left corner), a height of the entire area, a width of the entire area, and the number of areas (for example, 40 pieces as shown in FIG. 9) are input, the area is set to match the corresponding image.

FIG. 9 shows an example of setting this area to the user through the display unit.

When the area setting data value is input, a number of needle areas corresponding to the number of needles are set so as to correspond one-by-one to each needle of the needle image image (S830).

As described above, when the needle area is set, the loom 10 is operated to detect whether there is an error in the needle in the weaving process.

The image corresponding to the needle area is acquired by matching the current image of the needle taken by the image pickup device 120 (hereinafter referred to as the current needle image) and the needle area 20 previously set (S720).

After the step of acquiring the image (S720), the step of converting the acquired image into the monochrome image (S730) is performed.

The step of extracting the edge of the converted monochrome image (S740) is performed.

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

If the current brightness value is larger than the reference brightness value, it is determined that the current brightness value is normal. If the current brightness value is smaller than the reference brightness value, it is determined that the current brightness value is an error (S750) .

In the error determination step S750, the current brightness value of the extracted edge image is compared with the reference brightness value. If the current brightness value is larger than the reference brightness value, the error is determined to be a normal state (binary data 1) Data 0).

The error determination in step S750 determines whether there is an error with only one image value.

However, in order to increase the reliability of judgment, it is performed a plurality of times (for example, 30 times per minute), and an error is judged based on the average value of the plurality of performances. Hereinafter, this method will be described.

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

The steps S720 to S760 are repeated n times (n: 30, for example, natural number greater than 2) in a plurality of circuits (S770).

The current average value of the error judgment data stored in the error judgment data storing step is calculated (S780).

Then, the current average value and the reference average value are compared (S785).

If the current average value is greater than the reference average value, it is determined to be a 'needle error', and if not, it is determined that the needle is normal (S790).

The control unit 112 outputs the control signal to the woofer driving controller 131 and outputs the woofer driving control signal to the woofer controller 132. [

Then, the manager computer 140 outputs the status information of the needle.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is self-evident to those who have.

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

10: loom 110: needle error detector
20: Needle area 112:
114: Program storage unit 120: Image pickup element
131: loom drive controller 132: beacon controller
130: a warning lamp 140: a manager computer
150: base 160: imaging element mounting table
161: Leg 161a: Leg plate
161b: leg rod 161c: upper plate
162: Imaging element mounting rod 163:
171: LED substrate 172: LED
173: Light passing hole

Claims (4)

An imaging device 120 that shoots a needle of the loom 10 and transmits a current image of the taken needle (hereinafter referred to as a current needle image)
The needle area 20 is set so as to correspond one-to-one with the needles of the weaving machine 10 and the current needle image received from the image pickup device 120 is matched with the needle area 20 previously set, And a needle error detector 110 for detecting the deformation or cutting of the needle of the loom 10 (hereinafter referred to as " needle error ") based on the brightness of the obtained image, Of the weft needle needle.
The method according to claim 1,
The needle error detector (110)
A needle area 20 is set in correspondence with each needle of the loom 10 on a one-to-one basis and the needle image of the needle received from the image sensor 120 is matched with the needle area 20 previously set A program storage 114 for acquiring an image corresponding to the needle area and detecting a needle error of the loom 10 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 beep light driving control signal.
The method of claim 2,
In the program storage unit 114,
A step S710 in which the needle area 20 is set so as to correspond one-to-one to the needles of the loom 10,
A step S720 of acquiring an image corresponding to the needle area by matching the current needle image of the needle taken by the image pickup device 120 with the needle area 20 already set,
Comparing the current brightness of the acquired image with the reference brightness value, and determining that the current brightness value is normal if the current brightness value is greater than the reference brightness value and determining that the current brightness value is an error if the current brightness value is less than the reference brightness value (S730) And a needle error detection program is recorded on the needle detection unit.
The method of claim 3,
After performing the step S720 of acquiring an image,
Converting the acquired image into a monochrome image (S730)
The step of extracting the edge of the converted monochrome image (S740) is performed,
In the error determination step S750, the current brightness value of the extracted edge image is compared with the reference brightness value. If the current brightness value is greater than the reference brightness value, the error is determined to be a normal state. If the current brightness value is dark, Needle error detection device.

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