CN110906972A - Automatic paper monitoring and breaking prevention system - Google Patents
Automatic paper monitoring and breaking prevention system Download PDFInfo
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- CN110906972A CN110906972A CN201911028465.7A CN201911028465A CN110906972A CN 110906972 A CN110906972 A CN 110906972A CN 201911028465 A CN201911028465 A CN 201911028465A CN 110906972 A CN110906972 A CN 110906972A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/20—Delivering or advancing articles from machines; Advancing articles to or into piles by contact with rotating friction members, e.g. rollers, brushes, or cylinders
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
The invention discloses an automatic paper monitoring and breakage preventing system which can automatically monitor the running state of paper, acquire the image information of the surface and the side of the paper in the paper transmission process in real time, automatically judge the running state of a paper machine through the image information of the paper, and adjust the running parameters of equipment in real time, thereby preventing the quality problems of paper breakage and the like in the paper transmission running process and effectively improving the production efficiency and the production quality of paper making equipment.
Description
Technical Field
The invention relates to the field of paper quality detection and equipment automatic control in the paper production process of a paper mill, in particular to an automatic paper monitoring and breaking prevention system.
Background
The following background is provided to aid the reader in understanding the present invention and is not admitted to be prior art.
Paper mill often appears in the paper production in-process paper and has paper fracture, quality problems such as crackle in the in-process of transmission, and the root cause is that paper pulp play paper speed and the transfer paper speed matching degree in the transfer process are inconsistent, and transmission speed is too slow, and the paper piles up and produces the crease easily, and transmission speed is too fast, and the paper is torn easily. The traditional detection equipment mostly detects the production quality of paper, and in case quality problems such as cracks and broken paper occur, the manual shutdown is generally adopted to adjust the operation parameters of the equipment or modify the equipment, but the production continuity is affected, and the problems of breakage and the like in the production process of the paper cannot be reduced by automatically realizing the optimal adjustment of the operation parameters of the production equipment.
Disclosure of Invention
The invention aims to provide an automatic paper breakage prevention system for monitoring, which can automatically monitor the running state of paper, acquire the paper surface image and the paper side image information in the paper transmission process in real time, automatically judge the running state of a paper machine through the paper image information, and adjust the running parameters of equipment in real time, thereby preventing the quality problems of paper breakage and the like in the paper transmission running process and effectively improving the production efficiency and the production quality of paper-making equipment.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a disconnected automatic monitoring system is prevented to paper, includes the treater and sets up in the camera of paper machine production line, and the camera is at least including the last camera of shooing paper upper surface image and the side camera of shooing paper side thickness, and in the image input treater that the camera acquireed, the treater carries out following operation: enabling a camera to shoot a paper image in real time, and recording the rotating speed and torque of a motor for conveying paper at a corresponding moment; identifying a paper surface image shot by an upper camera, judging whether the paper has cracks or not, marking the paper surface image without the cracks as qualified, marking the paper surface image with the cracks as unqualified, and recording the crack image; identifying a paper side image shot by a side camera, acquiring a paper thickness value, judging whether the paper thickness value is within a qualified thickness range, marking the paper side image within the qualified thickness range as qualified, and marking the paper side image outside the qualified thickness range as unqualified; the motor rotating speed and the torque at each moment correspond to the paper surface image and the paper side image respectively; when the unqualified image appears, the processor acquires the rotating speed and the torque of the motor at the current moment, judges whether the rotating speed at the moment is within the rotating speed range of the qualified product, and adjusts the rotating speed of the motor to be within the rotating speed range of the qualified product if the rotating speed at the moment exceeds the rotating speed range of the qualified product; if the rotating speed at the moment is within the rotating speed range of the qualified product, judging whether the torque at the moment exceeds the torque range of the qualified product, if so, adjusting the torque to be within the torque range of the qualified product, and if not, stopping the machine and giving out a fault alarm. It should be noted that the root cause of the paper breakage or crack during the paper transportation process is that the paper output speed of the paper pulp is not matched with the paper transportation speed during the paper transportation process, and the rotation speed and the torque output by the motor of the transmission line affect the transmission speed of the transmission line, so that the paper can be normally transported by adjusting the rotation speed and the torque of the motor. After the equipment is stopped and a fault alarm is given out, the working personnel processes the equipment and adjusts the operation parameters of the equipment to enable the equipment to recover to operate.
Preferably, the obtaining of the rotation speed range of the surface pattern non-defective product includes the following operations: the paper machine runs, and an upper camera shoots in real time to obtain a paper surface video image; identifying whether cracks exist on the surface image of each frame of paper and marking the cracks, storing the paper pattern with a qualified surface in a surface qualified database, and correspondingly recording the motor speed, the torque and the time of the pattern at the current time; storing the image with cracks on the surface in a surface defect database, and correspondingly recording the motor rotating speed and the torque of the pattern at the current moment; and counting the motor rotating speed interval and the motor torque interval in the surface qualified database.
Preferably, the surface crack information is obtained using a mask. The algorithm of the mask uses existing models and algorithms.
Preferably, the obtaining of the rotation speed range of the qualified thickness product comprises the following operations: the paper making machine operates, the side camera is aligned to the side face of the paper in the front view direction, the side camera shoots in real time to obtain a paper side face video image, and each frame of paper side face image corresponds to the motor rotating speed and the torque at the current moment; identifying a paper area for each frame of paper side image to obtain a paper thickness value; and counting the rotating speed range and the torque range corresponding to the paper with the thickness value in the qualified thickness area range. Sheet thickness values are obtained from industry standards.
Preferably, when the camera shoots the paper image in real time, the system records the rotating speed and the torque of the roller for conveying the paper at the corresponding moment. The reason of equipment trouble has the multiple, and one of them is that the rotational speed and the moment of torsion of roller have taken place the change, receives the roller to produce stress easily to stress accumulation gradually along with the influence of factors such as temperature, external force, thereby the moment of torsion changes, because moment of torsion and rotational speed are the inverse proportion relation, the moment of torsion increase, the rotational speed then reduces, thereby produce the speed difference between the roller and cause the paper fracture. Whether the rotating speed and the torque of the roller are abnormal or not is checked by obtaining the rotating speed and the torque of the roller for conveying the paper at the corresponding moment, and if the rotating speed and the torque of the roller are abnormal, the rotating speed and the torque of the roller are adjusted, or the roller is maintained and replaced.
Preferably, the quality of each production batch is automatically evaluated according to the information collected in real time, and the evaluation result is transmitted to a display screen to be displayed in real time. The information comprises a paper surface image, paper side image information, and the rotating speed and the torque of a motor and a roller.
Preferably, when the unqualified image appears, the abnormal diary is formed by the rotating speed and the torque of the corresponding motor and the corresponding roller, and the abnormal diary data is transmitted to the display in real time to be displayed in real time. The abnormal diary data serves as a basis for staff to check, maintain and modify the equipment.
Preferably, the system comprises a motor, a motor torque sensor and a motor speed sensor which are arranged on the motor, a roller torque sensor and a roller speed sensor which are arranged on the roller, a motor which drives the roller to rotate, and a processor which collects and processes the obtained information. The motor is provided with a torque sensor and a rotating speed sensor, so that the torque and the rotating speed of the motor can be detected in real time, and the roller is provided with a torque sensor and a rotating speed sensor, so that the torque and the rotating speed of the roller can be detected in real time. It should be noted that the torque sensor and the rotation speed sensor need not be distributed over the whole paper conveying production line, and only need to be installed at a position where paper is easy to break. The processor collects the paper surface image and the paper side image obtained by real-time monitoring and the motor rotating speed and torque information, processes the information to obtain effective paper image information, the motor rotating speed and torque, compares the motor rotating speed and torque with the rotating speed range of the surface pattern qualified product and the rotating speed range of the thickness qualified product obtained in advance, and automatically adjusts the operation parameters of the equipment according to the comparison result until the paper is normally transmitted.
Preferably, the motor speed sensor is arranged on the motor output shaft.
Preferably, the system comprises a first coupler and a second coupler, the output shaft of the motor is sequentially connected with the first coupler, the motor torque sensor and the second coupler, and the output shaft of the second coupler is connected with the roller.
Preferably, the roller torque sensor and the roller rotating speed sensor are respectively arranged at the end part of the roller.
Preferably, an upper camera and a side camera are in a group, the upper camera and the side camera in the same group are arranged adjacently, and the system is provided with a plurality of groups of cameras. It should be noted that the camera does not need to be fully distributed on the whole paper conveying production line, and only needs to be installed at a position where paper is easy to break, and at the position where paper is easy to break, the image of the surface of the paper and the image of the side face of the paper need to be acquired simultaneously.
Preferably, the upper camera is positioned directly above the sheet. Thus, the image on the surface of the obtained paper is clearer.
Preferably, the side camera is installed at a side portion of the conveyed sheet. The method is favorable for obtaining clear paper side images.
Preferably, the side cameras are mounted between adjacent rollers. The rollers were avoided to obtain a clear image of the paper side.
Preferably, the system comprises a display. The display is used for displaying the abnormal diary data and the evaluation result of each production batch in real time.
The invention has the beneficial effects that:
1. in the paper transmission process, the paper surface image, the paper side image information and the rotating speed and the torque value of the motor are collected in real time, the running state of the paper machine is automatically judged according to the collected information, and the running parameters of the equipment are automatically adjusted in real time, so that the paper breaking phenomenon in the transmission process is prevented, the production continuity is ensured, and the production efficiency and the production quality of the paper making equipment are effectively improved.
2. And when the unqualified image appears, forming an abnormal diary by the rotating speed and the torque of the corresponding motor and the corresponding roller, and transmitting the abnormal diary data to a display in real time for displaying in real time as the basis for the inspection, maintenance and equipment improvement of workers.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Fig. 2 is a partially enlarged view of a in fig. 1.
The labels in the figure are: the device comprises a motor 11, a motor torque sensor 111, a motor rotating speed sensor 112, a first coupler 113, a second coupler 114, a roller 12, a roller torque sensor 121, a roller rotating speed sensor 122, a processor 13, an upper camera 141, a side camera 142, paper 15 and a display 16.
Detailed Description
The present invention will be further described with reference to the structures or terms used herein. The description is given for the sake of example only, to illustrate how the invention may be implemented, and does not constitute any limitation on the invention.
A paper breakage-preventing automatic monitoring system comprises a processor and a camera arranged on a paper machine production line, wherein the camera at least comprises an upper camera 141 for shooting an image of the upper surface of paper and a side camera 142 for shooting the side thickness of the paper, and the image obtained by the camera is input into the processor, and the processor 13 executes the following operations: enabling a camera to shoot a paper image in real time, and recording the rotating speed and torque of a motor for conveying paper at a corresponding moment; identifying the surface image of the paper shot by the upper camera 141, judging whether the paper has cracks or not, marking the surface image of the paper without the cracks as qualified, marking the surface image of the paper with the cracks as unqualified, and recording the crack image; identifying the paper side image shot by the side camera 142, obtaining a paper thickness value, judging whether the paper thickness value is within a qualified thickness range, marking the paper side image within the qualified thickness range as qualified, and marking the paper side image outside the qualified thickness range as unqualified; the rotation speed and torque of the motor 11 at each moment correspond to the respective paper surface image and paper side image; when the unqualified image appears, the processor acquires the rotating speed and the torque of the motor at the current moment, judges whether the rotating speed at the moment is within the rotating speed range of the qualified product, and adjusts the rotating speed of the motor to be within the rotating speed range of the qualified product if the rotating speed at the moment exceeds the rotating speed range of the qualified product; if the rotating speed at the moment is within the rotating speed range of the qualified product, judging whether the torque at the moment exceeds the torque range of the qualified product, if so, adjusting the torque to be within the torque range of the qualified product, and if not, stopping the machine and giving out a fault alarm. It should be noted that the root cause of the paper breakage or crack during the paper transportation process is that the paper output speed of the paper pulp is not matched with the paper transportation speed during the paper transportation process, and the rotation speed and the torque output by the motor of the transmission line affect the transmission speed of the transmission line, so that the paper can be normally transported by adjusting the rotation speed and the torque of the motor. After the equipment is stopped and a fault alarm is given out, the working personnel processes the equipment and adjusts the operation parameters of the equipment to enable the equipment to recover to operate.
Preferably, the obtaining of the rotation speed range of the surface pattern non-defective product includes the following operations: the paper machine runs, and an upper camera shoots in real time to obtain a paper surface video image; identifying whether cracks exist on the surface image of each frame of paper and marking the cracks, storing the paper pattern with a qualified surface in a surface qualified database, and correspondingly recording the motor speed, the torque and the time of the pattern at the current time; storing the image with cracks on the surface in a surface defect database, and correspondingly recording the motor rotating speed and the torque of the pattern at the current moment; and counting the motor rotating speed interval and the motor torque interval in the surface qualified database.
Preferably, the surface crack information is obtained using a mask. The algorithm of the mask uses existing models and algorithms.
Preferably, the obtaining of the rotation speed range of the qualified thickness product comprises the following operations: the paper machine runs, the side camera 142 is aligned to the side of the paper in the front view direction, the side camera 142 shoots in real time to obtain a paper side video image, and each frame of paper side image corresponds to the motor rotating speed and the torque at the current moment; identifying a paper area for each frame of paper side image to obtain a paper thickness value; and counting the rotating speed range and the torque range corresponding to the paper with the thickness value in the qualified thickness area range. Sheet thickness values are obtained from industry standards.
Preferably, when the camera shoots the paper image in real time, the system records the rotating speed and the torque of the roller for conveying the paper at the corresponding moment. The reason of equipment trouble has the multiple, and one of them is that the rotational speed and the moment of torsion of roller have taken place the change, receives the roller to produce stress easily to stress accumulation gradually along with the influence of factors such as temperature, external force, thereby the moment of torsion changes, because moment of torsion and rotational speed are the inverse proportion relation, the moment of torsion increase, the rotational speed then reduces, thereby produce the speed difference between the roller and cause the paper fracture. Whether the rotating speed and the torque of the roller are abnormal or not is checked by obtaining the rotating speed and the torque of the roller for conveying the paper at the corresponding moment, and if the rotating speed and the torque of the roller are abnormal, the rotating speed and the torque of the roller are adjusted, or the roller is maintained and replaced.
Preferably, the quality of each production batch is automatically evaluated according to the information collected in real time, and the evaluation result is transmitted to a display screen to be displayed in real time. The information comprises a paper surface image, paper side image information, and the rotating speed and the torque of a motor and a roller.
Preferably, when the unqualified image appears, the abnormal diary is formed by the rotating speed and the torque of the corresponding motor and the corresponding roller, and the abnormal diary data is transmitted to the display in real time to be displayed in real time. The abnormal diary data serves as a basis for staff to check, maintain and modify the equipment.
As shown in fig. 1 and 2, the system comprises a motor 11, a motor torque sensor 111 and a motor speed sensor 112 arranged on the motor 11, a roller 12, a roller torque sensor 121 and a roller speed sensor 122 arranged on the roller 12, the motor 11 driving the roller 12 to rotate, and a processor 13 collecting and processing the obtained information. A torque sensor and a rotating speed sensor are mounted on an output shaft of the motor, so that the torque and the rotating speed of the motor 11 can be detected in real time, and a torque sensor and a rotating speed sensor are mounted on the roller 12, so that the torque and the rotating speed of the roller 12 can be detected in real time. It should be noted that the torque sensor and the rotation speed sensor need not be distributed over the whole paper conveying production line, and only need to be installed at a position where paper is easy to break. The processor 13 collects the paper surface image and the paper side image obtained by real-time monitoring and the motor rotating speed and torque information, processes the information to obtain effective paper image information, the motor rotating speed and torque, compares the motor rotating speed and torque with the rotating speed range of the surface pattern qualified product and the rotating speed range of the thickness qualified product obtained in advance, and automatically adjusts the operation parameters of the equipment according to the comparison result until the paper is normally transmitted.
The motor speed sensor 112 is provided on the motor output shaft. The system comprises a first coupler 113 and a second coupler 114, wherein the output shaft of the motor is sequentially connected with the first coupler 113, the motor torque sensor 111 and the second coupler 114, and the output shaft of the second coupler 114 is connected with the roller 12, as shown in fig. 2.
As shown in fig. 1, a roller torque sensor 121 and a roller speed sensor 122 are respectively provided at the end portions of the rollers 12.
As shown in fig. 1, one upper camera 141 and one side camera 142 form a group of cameras, the upper camera 141 and the side camera 142 in the same group are arranged adjacently, and the system is provided with a plurality of groups of cameras. It should be noted that the camera does not need to be fully distributed on the whole paper conveying production line, and only needs to be installed at a position where paper is easy to break, and at the position where paper is easy to break, the image of the surface of the paper and the image of the side face of the paper need to be acquired simultaneously. The upper camera 141 is positioned directly above the sheet of paper 15. Thus, the image on the surface of the obtained paper is clearer. The side camera 142 is installed at the side of the conveyed sheet 15, which is advantageous for obtaining a clear sheet side image. Side cameras 142 are mounted between adjacent rollers, avoiding rollers 12 to obtain a clear image of the side of the paper.
As shown in fig. 1, the system includes a display 16. The display 16 is used to display the abnormal diary data and the evaluation result of each production lot in real time.
The invention shown and described herein may be practiced in the absence of any element or elements, limitation or limitations, which is specifically disclosed herein. The terms and expressions which have been employed are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding any equivalents of the features shown and described or portions thereof, and it is recognized that various modifications are possible within the scope of the invention. It should therefore be understood that although the present invention has been specifically disclosed by various embodiments and optional features, modification and variation of the concepts herein described may be resorted to by those skilled in the art, and that such modifications and variations are considered to be within the scope of this invention as defined by the appended claims.
The contents of the articles, patents, patent applications, and all other documents and electronically available information described or cited herein are hereby incorporated by reference in their entirety to the same extent as if each individual publication was specifically and individually indicated to be incorporated by reference. Applicants reserve the right to incorporate into this application any and all materials and information from any such articles, patents, patent applications, or other documents.
Claims (10)
1. The utility model provides a paper monitoring prevents disconnected system automatically which characterized in that, includes the treater and sets up in the camera of paper machine production line, and the camera includes the last camera of shooting paper upper surface image at least, and shoots the side camera of paper side thickness, and in the image input treater that the camera acquireed, the treater carries out following operation: enabling a camera to shoot a paper image in real time, and recording the rotating speed and torque of a motor for conveying paper at a corresponding moment; identifying a paper surface image shot by an upper camera, judging whether the paper has cracks or not, marking the paper surface image without the cracks as qualified, marking the paper surface image with the cracks as unqualified, and recording the crack image; identifying a paper side image shot by a side camera, acquiring a paper thickness value, judging whether the paper thickness value is within a qualified thickness range, marking the paper side image within the qualified thickness range as qualified, and marking the paper side image outside the qualified thickness range as unqualified; the motor rotating speed and the torque at each moment correspond to the paper surface image and the paper side image respectively; when the unqualified image appears, the processor acquires the rotating speed and the torque of the motor at the current moment, judges whether the rotating speed at the moment is within the rotating speed range of the qualified product, and adjusts the rotating speed of the motor to be within the rotating speed range of the qualified product if the rotating speed at the moment exceeds the rotating speed range of the qualified product; if the rotating speed at the moment is within the rotating speed range of the qualified product, judging whether the torque at the moment exceeds the torque range of the qualified product, if so, adjusting the torque to be within the torque range of the qualified product, and if not, stopping the machine and giving out a fault alarm.
2. The paper monitoring automatic breakage-preventing system of claim 1, wherein the acquisition of the rotation speed range of the qualified surface pattern product comprises the operations of: the paper machine runs, and an upper camera shoots in real time to obtain a paper surface video image; identifying whether cracks exist on the surface image of each frame of paper and marking the cracks, storing the paper pattern with a qualified surface in a surface qualified database, and correspondingly recording the motor speed, the torque and the time of the pattern at the current time; storing the image with cracks on the surface in a surface defect database, and correspondingly recording the motor rotating speed and the torque of the pattern at the current moment; and counting the motor rotating speed interval and the motor torque interval in the surface qualified database.
3. The paper monitoring automatic breakage prevention system of claim 2, wherein the mask is used to obtain surface crack information.
4. A paper monitoring automatic breakage prevention system as recited in claim 3, wherein the acquisition of the rotation speed range of the thickness-qualified product includes the operations of: the paper making machine operates, the side camera is aligned to the side face of the paper in the front view direction, the side camera shoots in real time to obtain a paper side face video image, and each frame of paper side face image corresponds to the motor rotating speed and the torque at the current moment; identifying a paper area for each frame of paper side image to obtain a paper thickness value; and counting the rotating speed range and the torque range corresponding to the paper with the thickness value in the qualified thickness area range.
5. The paper monitoring automatic breakage-preventing system of claim 4, wherein when the camera takes an image of the paper in real time, the system records the rotating speed and torque of the roller which conveys the paper at the corresponding moment.
6. The paper monitoring automatic breakage-preventing system as claimed in claim 5, wherein each production lot is automatically evaluated for quality according to the information collected in real time, and the evaluation result is transmitted to a display screen for real-time display.
7. The paper sheet monitoring automatic breakage-proof system as claimed in claim 6, wherein when the unqualified image appears, the abnormal diary is formed by the rotation speed and the torque of the corresponding motor and the corresponding roller, and the abnormal diary data is transmitted to the display in real time to be displayed in real time.
8. The paper monitoring automatic breakage-preventing system of claim 7, wherein the system comprises a motor, a motor torque sensor and a motor speed sensor arranged on the motor, a roller torque sensor and a roller speed sensor arranged on the roller, and a processor for collecting and processing the obtained information.
9. The paper monitoring automatic breakage-proof system of claim 8, wherein the motor speed sensor is arranged on a motor output shaft, the system comprises a first coupler and a second coupler, the motor output shaft is sequentially connected with the first coupler, the motor torque sensor and the second coupler, and an output shaft of the second coupler is connected with the roller; the roller torque sensor and the roller rotating speed sensor are respectively arranged at the end parts of the roller.
10. The paper monitoring automatic breakage-preventing system of claim 9, wherein an upper camera and a side camera are in a group, the upper camera and the side camera of the same group are arranged adjacently, and the system is provided with a plurality of groups of cameras; the upper camera is positioned right above the paper, the side camera is arranged on the side part of the paper, and the side camera is arranged between the adjacent rollers.
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| CN201911028465.7A CN110906972B (en) | 2019-10-28 | 2019-10-28 | Automatic paper monitoring and breaking prevention system |
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| CN201911028465.7A CN110906972B (en) | 2019-10-28 | 2019-10-28 | Automatic paper monitoring and breaking prevention system |
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| CN110906972A true CN110906972A (en) | 2020-03-24 |
| CN110906972B CN110906972B (en) | 2021-06-18 |
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