CN107385668B

CN107385668B - Yarn breakage visual detection system with improved structure

Info

Publication number: CN107385668B
Application number: CN201710578945.5A
Authority: CN
Inventors: 游雄峰; 翁晓光
Original assignee: Fujian Rongrongxin Microelectronics Technology Co ltd
Current assignee: Fujian Rongrongxin Microelectronics Technology Co ltd
Priority date: 2017-07-17
Filing date: 2017-07-17
Publication date: 2022-12-23
Anticipated expiration: 2037-07-17
Also published as: CN107385668A

Abstract

The utility model provides a construction improvement's broken yarn visual detection system, includes and carries platform, plural number interval arrangement in carrying the yarn on the platform, be located the yarn transmission assembly that advances of carrying platform one side, be located the yarn transmission assembly that goes out of carrying platform opposite side, a fixed stores pylon that is located into between yarn transmission assembly and the yarn transmission assembly and install the embedded industry camera on this fixed stores pylon, embedded industry camera includes a camera housing, a visual detection circuit board, a display element, a CMOS camera, a light brightness adjustment unit and an at least lighting unit, the CMOS camera is located the plural number directly over the yarn. The yarn quantity monitoring device is simple in structure and strong in practicability, an embedded industrial camera is arranged to replace a detection mode that a traditional computer is matched with an industrial camera, the size is greatly reduced, the carrying is convenient, the cost is lower, the service life is longer, the yarn quantity can be accurately monitored, an alarm is given immediately when yarn breakage occurs, and the response is sensitive.

Description

Yarn breakage visual detection system with improved structure

Technical Field

The invention relates to a visual detection system for broken yarns, in particular to a visual detection system for broken yarns with an improved structure.

Background

The yarn breakage detection sensors of warp knitting machines used in the textile industry at present can be roughly divided into two categories, one category is contact type detection devices such as drop-out type detection devices, and the other category is non-contact type detection devices such as piezoelectric sensors, capacitance type sensors, photoelectric sensor detection devices and the like. The mechanical contact type warp stop motion device can not meet the requirements of various purposes developed by textile machinery and is gradually eliminated. High-speed/high-performance textile machinery requires the use of reliable non-contact sensors, but the capacitive sensors and photoelectric sensors commonly used at present have the defects of low detection accuracy, poor sensitivity, sensitivity to external environment influence, troublesome device installation and the like.

The Chinese invention patent (application number: 201310415128. X) discloses a grey cloth broken yarn on-line detection method and system based on computer vision, which comprises a control computer, wherein the control computer is connected with an industrial camera and a control module, the control module is connected with a warp knitting machine to operate a motor, and the industrial camera is arranged above a grey cloth to be detected on the warp knitting machine. Although the yarn breakage detection system improves the detection precision, the detection efficiency and the anti-interference capability, the following defects exist in the actual use process: the overall structure is huge, the circuit arrangement is various, the space utilization rate is low, the operation is carried out by means of a computer, and the cost is expensive.

Disclosure of Invention

The invention provides a broken yarn visual detection system with an improved structure, and mainly aims to overcome the defects of larger structure, more circuit arrangement and expensive equipment of the conventional broken yarn detection system.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a broken yarn vision detection system of institutional advancement which characterized in that: comprises a conveying table, a plurality of yarns which are arranged on the conveying table at intervals, a yarn feeding transmission assembly positioned on one side of the conveying table, a yarn discharging transmission assembly positioned on the other side of the conveying table, a fixed hanging frame positioned between the yarn feeding transmission assembly and the yarn discharging transmission assembly, and an embedded industrial camera arranged on the fixed hanging frame, the embedded industrial camera comprises a camera shell, a visual detection circuit board, a display unit, a CMOS camera, a light brightness adjusting unit and at least one lighting unit, the CMOS camera is positioned right above the plurality of yarns, the camera shell comprises an aluminum alloy cover body with an accommodating cavity arranged inside and an aluminum alloy cover plate, the aluminum alloy cover body comprises an aluminum alloy bottom plate and an aluminum alloy side plate extending upwards from the edge of the aluminum alloy bottom plate, the aluminum alloy cover plate is detachably covered on the top edge of the aluminum alloy side plate, the visual inspection circuit board is arranged in the accommodating cavity, the middle part of the aluminum alloy bottom plate is provided with a first through hole, the CMOS camera is arranged on one side of the visual detection circuit board and is aligned with the first through hole, a first through groove is formed in the middle of the aluminum alloy cover plate, the display unit is arranged on the other side of the visual detection circuit board and aligned with the first through groove, the aluminum alloy bottom plate is provided with at least one second through hole, the lighting unit is arranged on one side of the visual detection circuit board and is aligned with the second through hole, the lamp brightness adjusting unit comprises a shading sleeve which is arranged on the first through hole and can axially shift along the first through hole, and a power transmission unit which is used for driving the shading sleeve to axially shift.

Furthermore, the visual detection circuit board comprises a circuit board body, and an ARM processor, an image storage and at least one input/output interface unit which are arranged on the circuit board body, wherein the output end of the CMOS camera is connected with the enabling end of the ARM processor, the output end of the ARM processor is connected with the enabling end of the display unit, and the ARM processor is in two-way connection with the image storage.

Furthermore, the enabling end of the power transmission unit is connected to the output end of the ARM processor.

Furthermore, the light brightness adjusting unit further comprises at least one luminosity sensor, the shading sleeve is provided with an annular flange and a shooting hole positioned in the middle of the annular flange, the CMOS camera is aligned with the shooting hole, the luminosity sensor is arranged on the annular flange, and the output end of the luminosity sensor and the output end of the ARM processor are connected with each other

The input terminal is electrically connected.

Further, there are 8 photometric sensors, and the 8 photometric sensors are mounted on the annular flange in an annular array arrangement.

Furthermore, the lighting units are LED bulbs, the number of the LED bulbs is four, the two second through holes are respectively formed in the two sides of the first through hole of the aluminum alloy base plate, and each LED bulb is aligned with one second through hole.

Further, the display unit is a TFT screen or a touch screen.

Furthermore, the embedded industrial camera also comprises at least one input key, and the enabling end of the ARM processor is electrically connected with the output end of the input key.

Furthermore, a second through groove is formed in one side of the first through groove of the aluminum alloy cover plate, and the input key is arranged on the other side of the visual detection circuit board and aligned with the second through groove.

Furthermore, a third through groove is formed in the aluminum alloy side plate, and the input and output interface unit is aligned with the third through groove.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has simple structure and strong practicability, replaces the detection mode of the traditional computer matched with the industrial camera by arranging the embedded industrial camera, greatly reduces the volume, is convenient to carry, has lower cost and longer service life, and can precisely detect the position of the embedded industrial camera

The number of the yarns is monitored, and the alarm is given immediately when the yarn is broken, so that the response is sensitive.

The invention has simple structure and strong practicability, controls the shading sleeve to axially shift by arranging the power transmission unit, thereby playing a role of controlling the backlight intensity of the CMOS camera, ensuring that the camera is in a good backlight condition and further ensuring that the camera is in a good backlight condition

The photo shooting effect and the accuracy degree of recognition are improved, so that the influence of the illumination degree of the surrounding environment can be reduced, and the method can be applied to any production and living scenes.

In the invention, the backlight intensity of the CMOS camera can be detected in real time by arranging the luminosity sensor and fed back to the ARM processor, so that the power transmission unit is controlled to act by the luminosity sensor, therefore, the backlight intensity of the CMOS camera tends to a fixed value constantly, and the stability of picture shooting and recognition is greatly improved.

According to the invention, the camera shell is arranged into the aluminum alloy cover body and the aluminum alloy cover plate, and the aluminum alloy is a good thermal conductor, so that heat emitted by the visual detection circuit board during working can be directly conducted to the outside by the aluminum alloy cover body, the aluminum alloy cover body can generate a mechanical protection effect, and the effect of replacing a heat dissipation unit can be achieved, so that the industrial camera does not need to be provided with the heat dissipation unit, the internal space is greatly saved, and the production cost is reduced.

In the invention, the ARM processor is favorable for reducing the volume of the equipment and improving the precision, so that the invention can provide all functional images of the single-chip integrated camera and the image processor, an external PC (personal computer) is not needed, the manufacturing cost can be greatly reduced, and the installation is very convenient and simple.

Drawings

Fig. 1 is a schematic structural diagram of an embedded industrial camera according to the present invention.

Fig. 2 is a rear view of fig. 1.

Fig. 3 is a side view of fig. 1.

Fig. 4 is a schematic block diagram of the circuit of fig. 1.

FIG. 5 is a schematic view of the present invention.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Reference is made to fig. 1, 2, 3, 4 and 5. A structure-improved visual detection system 9 for broken yarn comprises a conveying table 90, a plurality of yarns 91 arranged on the conveying table 90 at intervals, a yarn feeding transmission assembly 92 positioned on one side of the conveying table 90, a yarn discharging transmission assembly 93 positioned on the other side of the conveying table 90, a fixed hanger 94 positioned between the yarn feeding transmission assembly 92 and the yarn discharging transmission assembly 93, and an embedded industrial camera 1 mounted on the fixed hanger 94, wherein the embedded industrial camera 1 comprises a camera shell 2, a visual detection circuit board 3, a display unit 4, a CMOS camera 5, a light brightness adjusting unit 8 and at least one lighting unit 6, the camera shell 2 comprises an aluminum alloy cover body 20 with a containing cavity and an aluminum alloy cover plate, the aluminum alloy cover body 20 comprises an aluminum alloy bottom plate and an aluminum alloy side plate extending upwards from the edge of the aluminum alloy bottom plate, the aluminum alloy cover plate is detachably arranged on the top edge of the aluminum alloy side plate in a covering mode, the visual detection circuit board 3 is arranged in the containing cavity, a first through hole is formed in the middle of the aluminum alloy bottom plate, the CMOS camera 5 is arranged on one side of the visual detection circuit board 3 and is aligned with the first through hole, a first through groove is formed in the middle of the aluminum alloy cover plate, the display unit 4 is arranged on the other side of the visual detection circuit board 3 and is aligned with the first through groove, at least one second through hole is formed in the aluminum alloy bottom plate, the illuminating unit 6 is arranged on one side of the visual detection circuit board 3 and is aligned with the second through hole, the lamplight brightness adjusting unit 8 comprises a shading sleeve 80 and a power transmission unit 81, the shading sleeve 80 is mounted on the first through hole and can axially shift along the first through hole, and the power transmission unit 81 is used for driving the shading sleeve 80 to axially shift .

Reference is made to fig. 1, 2, 3 and 4. The visual detection circuit board 3 comprises a circuit board body, an ARM processor 30, an image storage 31 and at least one input/output interface unit 32, wherein the ARM processor 30, the image storage 31 and the at least one input/output interface unit 32 are installed on the circuit board body, the output end of the CMOS camera 5 is connected to the enabling end of the ARM processor 30, the output end of the ARM processor 30 is connected to the enabling end of the display unit 4, and the ARM processor 30 is in two-way connection with the image storage 31.

Reference is made to fig. 1, 2, 3 and 4. The enable terminal of the power transmission unit 81 is connected to the output terminal of the ARM processor 30. In the present embodiment, the power transmission unit 81 may be a miniature transmission mechanism used in a camera, such as an electronic gear, which is well known in the art, and thus, the detailed structure thereof will not be described in detail herein.

Reference is made to fig. 1, 2, 3 and 4. The light brightness adjusting unit 8 further comprises at least one luminosity sensor 82, the light shielding sleeve 80 is provided with an annular flange and a shooting hole located in the middle of the annular flange, the CMOS camera 5 is aligned with the shooting hole, the luminosity sensor 82 is installed on the annular flange, and the output end of the luminosity sensor 82 is electrically connected with the input end of the ARM processor 30.

Reference is made to fig. 1, 2, 3 and 4. The photometric sensors 82 are provided in 8, the 8 photometric sensors 82 being mounted in an annular array arrangement on the annular flange.

Reference is made to fig. 1, 2, 3 and 4. The lighting unit 6 is an LED bulb, the number of the LED bulbs is four, the two second through holes are respectively formed in the two sides of the first through hole of the aluminum alloy base plate, and each LED bulb is aligned with one second through hole.

Reference is made to fig. 1, 2, 3 and 4. The display unit 4 is a TFT screen or a touch screen.

Reference is made to fig. 1, 2, 3 and 4. The industrial camera 1 further comprises at least one input key 33, and the enable terminal of the ARM processor 30 is electrically connected with the output terminal of the input key 33.

Reference is made to fig. 1, 2, 3 and 4. The aluminum alloy cover plate is provided with a second through groove at one side of the first through groove, and the input key 33 is arranged at the other side of the visual detection circuit board 3 and aligned with the second through groove.

Refer to fig. 1, 2, 3 and 4. A third through groove is formed in the aluminum alloy side plate, and the input/output interface unit 32 is aligned with the third through groove.

Reference is made to fig. 1, 2, 3 and 4. The input/output interface unit 32 includes a power-on input interface unit for providing a switching value signal, at least one output interface unit directly used for outputting a switching value of the PLC, and a power supply interface unit for inputting a 22V-28V power supply.

Reference is made to fig. 1, 2, 3 and 4. And at least one threaded hole used for being installed with the rack is formed in the aluminum alloy side plate.

Compared with the prior art, the invention has the beneficial effects that:

The invention has simple structure and strong practicability, controls the shading sleeve 80 to axially shift by arranging the power transmission unit 81, thereby playing a role of controlling the backlight intensity of the CMOS camera 5, ensuring that the camera is in a good backlight condition, further improving the photo shooting effect and the accuracy degree of identification, and reducing the influence of the illumination degree of the surrounding environment, so that the invention can be applied to any production and living scenes.

In the invention, the backlight intensity of the CMOS camera 5 can be detected in real time by arranging the luminosity sensor 82 and fed back to the ARM processor 30, so that the ARM processor controls the power transmission unit 81 to act, therefore, the backlight intensity of the CMOS camera 5 tends to a fixed value constantly, and the stability of picture shooting and recognition is greatly improved.

According to the industrial camera, the camera shell 2 is arranged into the aluminum alloy cover body and the aluminum alloy cover plate, and the aluminum alloy is a good thermal conductor, so that heat emitted by the visual detection circuit board 3 during working can be directly conducted to the outside by the aluminum alloy cover body, the aluminum alloy cover body can generate a mechanical protection effect, and can also play a role in replacing a heat dissipation unit, so that the industrial camera 1 does not need to be provided with the heat dissipation unit, the internal space is greatly saved, and the production cost is reduced.

In the invention, the ARM processor 30 is beneficial to reducing the volume of the equipment and improving the precision, so that the invention can provide all functional images of the single-chip integrated camera and the image processor, an external PC is not needed, the manufacturing cost can be greatly reduced, and the installation is very convenient and simple.

The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.

Claims

1. The utility model provides a broken yarn vision detection system of institutional advancement which characterized in that: comprises a conveying table, a plurality of yarns which are arranged on the conveying table at intervals, a yarn feeding transmission assembly positioned on one side of the conveying table, a yarn discharging transmission assembly positioned on the other side of the conveying table, a fixed hanging frame positioned between the yarn feeding transmission assembly and the yarn discharging transmission assembly, and an embedded industrial camera arranged on the fixed hanging frame, the embedded industrial camera comprises a camera shell, a visual detection circuit board, a display unit, a CMOS camera, a light brightness adjusting unit and at least one lighting unit, the CMOS camera is positioned right above the plurality of yarns, the camera shell comprises an aluminum alloy cover body with an accommodating cavity arranged inside and an aluminum alloy cover plate, the aluminum alloy cover body comprises an aluminum alloy bottom plate and an aluminum alloy side plate extending upwards from the edge of the aluminum alloy bottom plate, the aluminum alloy cover plate is detachably covered on the top edge of the aluminum alloy side plate, the visual inspection circuit board is arranged in the accommodating cavity, the middle part of the aluminum alloy bottom plate is provided with a first through hole, the CMOS camera is arranged on one side of the visual detection circuit board and is aligned with the first through hole, a first through groove is formed in the middle of the aluminum alloy cover plate, the display unit is arranged on the other side of the visual detection circuit board and aligned with the first through groove, the aluminum alloy bottom plate is provided with at least one second through hole, the lighting unit is arranged on one side of the visual detection circuit board and is aligned with the second through hole, the lamp brightness adjusting unit comprises a shading sleeve which is arranged on the first through hole and can axially shift along the first through hole, and a power transmission unit which is used for driving the shading sleeve to axially shift.

2. The vision inspection system for broken yarn with improved structure as claimed in claim 1, wherein: the visual detection circuit board comprises a circuit board body, and an ARM processor, an image storage and at least one input/output interface unit which are arranged on the circuit board body, wherein the output end of the CMOS camera is connected with the enabling end of the ARM processor, the output end of the ARM processor is connected with the enabling end of the display unit, and the ARM processor is in two-way connection with the image storage.

3. The vision inspection system for broken yarn of claim 2 with improved structure, characterized in that: and the enabling end of the power transmission unit is connected to the output end of the ARM processor.

4. The vision inspection system for broken yarn of claim 3 with improved structure, characterized in that: the light brightness adjusting unit further comprises at least one luminosity sensor, the shading sleeve is provided with an annular flange and a shooting hole located in the middle of the annular flange, the CMOS camera is aligned with the shooting hole, the luminosity sensor is installed on the annular flange, and the output end of the luminosity sensor is electrically connected with the input end of the ARM processor.

5. The vision inspection system for broken yarn of claim 4 with improved structure, characterized in that: the photometric sensor is provided with 8, and the 8 photometric sensors are arranged in an annular array and are arranged on the annular flange.

6. The vision inspection system for broken yarn of claim 5 with improved structure, characterized in that: the lighting unit is an LED bulb, the number of the LED bulbs is four, the two second through holes are respectively formed in the two sides of the first through hole of the aluminum alloy base plate, and each LED bulb is aligned with one second through hole.

7. The vision inspection system for broken yarn of claim 6 with improved structure, characterized in that: the display unit is a TFT screen or a touch screen.

8. The vision inspection system for broken yarn of claim 7 with improved structure, wherein: the embedded industrial camera also comprises at least one input key, and the enabling end of the ARM processor is electrically connected with the output end of the input key.

9. The vision inspection system for broken yarn of claim 8 with improved structure, wherein: the aluminum alloy cover plate is provided with a second through groove on one side of the first through groove, and the input key is arranged on the other side of the visual detection circuit board and aligned with the second through groove.

10. The vision inspection system for broken yarn of claim 9 with improved structure, wherein: and a third through groove is formed in the aluminum alloy side plate, and the input and output interface unit is aligned with the third through groove.