CN107012717B - A kind of paper production control device and method - Google Patents
A kind of paper production control device and method Download PDFInfo
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- CN107012717B CN107012717B CN201710221156.6A CN201710221156A CN107012717B CN 107012717 B CN107012717 B CN 107012717B CN 201710221156 A CN201710221156 A CN 201710221156A CN 107012717 B CN107012717 B CN 107012717B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G9/00—Other accessories for paper-making machines
- D21G9/0009—Paper-making control systems
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F7/00—Other details of machines for making continuous webs of paper
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/94—Investigating contamination, e.g. dust
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
- G01N2021/8416—Application to online plant, process monitoring and process controlling, not otherwise provided for
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- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Paper (AREA)
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Abstract
The present invention provides a kind of paper production control device and methods, including：The video for receiving the video flowing for acquiring paper production machine production paper by camera, and is streaming to analyzer by network hard disk video recorder；The analyzer is converted to gray-scale map for the image in the video flowing by reception, and according to the gray value of pixel in the gray-scale map, detects and whether there is spot in the paper of production, and exports control instruction according to testing result；The control instruction is used to control the production operation mode of the paper production machine.Invention additionally discloses corresponding paper production control methods.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of paper production control device and method.
Background technology
Currently, paper is mainly produced by mechanical paper machine, paper machine includes the forming for completing process above process, pressure
Squeeze, 3 major parts of drying, and equipped with necessary ornamenting, batch and transmission device, and for slurry, slurry and plain boiled water cycle, true
The auxiliary systems such as sky, vented exhaust, broke treatment and lubrication, automatic control will meet the paper pulp water suspension of papermaking requirement through strainer
Drainage and formation, mechanical presses dehydration and the processes such as dry and copy the machine that paper is made.It, can not but in producing paper process
Whether there is spot in automatic detection paper, when it is even more impossible to occur spot in paper, automatically controls the mode of production of paper machine.
Invention content
In view of this, the purpose of the present invention is to provide a kind of paper production device and method, to try hard to solve or extremely
It is few alleviate above there are the problem of.
In a first aspect, the embodiment of the present invention provides a kind of paper production control device, including：
Network hard disk video recorder acquires the video flowing that paper production machine produces paper for receiving by camera, and will
The video is streaming to analyzer；
The analyzer is converted to gray-scale map for the image in the video flowing by reception, and according to picture in the gray-scale map
The gray value of vegetarian refreshments detects and whether there is spot in the paper of production, and exports control instruction according to testing result；The control
Instruct the production operation mode for controlling the paper production machine.
Optionally, further include：
Programmable logic controller (PLC) PLC interface, the control instruction for receiving the analyzer, and by the control instruction
It is transferred to PLC；
The PLC, the production operation mode for controlling the paper production machine according to the control instruction.
Optionally, the analyzer is specifically used for：
When the analyzer detects in the paper of production there are when spot, the control instruction include to give an order in
It is one or more：
Cut off paper；
Suspend paper production；
Reduce paper production speed.
Optionally, the analyzer is specifically used for whether there is spot in the paper according to following steps detection production：
According to the gray value of pixel in the gray-scale map, determine that corresponding gray value is more than the pixel of the first gray threshold
The number of point；
When the number of the pixel is more than first number threshold value, determine that there are spots in the paper of the production.
Optionally, the analyzer is specifically used for whether there is spot in the paper according to following steps detection production：
According to setting pixel coverage, the gray-scale map is divided into multiple block of pixels；
For each block of pixels of division, according to the gray value of each pixel in the block of pixels, the pixel is determined
Corresponding gray value is more than the number of the pixel of the second gray threshold in block；
According to the number of the corresponding pixel of each block of pixels described in division, determine in the paper of production whether
There are spots.
Optionally, the analyzer is specifically used for：
In the block of pixels of division, the number there are the corresponding pixel of at least one block of pixels is more than second number
When threshold value, determine that there are spots in the paper of production；Alternatively,
According to the number of the corresponding pixel of each block of pixels described in division, the corresponding pixel is determined
Number be more than second number threshold value block of pixels number；
When the number of the block of pixels is more than third number threshold value, determine that there are spots in the paper of production.
Second aspect, embodiments herein provide a kind of paper production control method, including：
It is received using network hard disk video recorder and the video flowing that paper production machine produces paper is acquired by camera；
Image in the video flowing of reception is converted into gray-scale map；
According to the gray value of pixel in the gray-scale map, detects and whether there is spot in the paper of production；
The production operation mode of the paper production machine is controlled according to testing result.
Optionally, the gray value according to pixel in the gray-scale map detects and whether there is spot in the paper of production,
Including：
According to the gray value of pixel in the gray-scale map, determine that corresponding gray value is more than the pixel of the first gray threshold
The number of point；
When the number of the pixel is more than first number threshold value, determine that there are spots in the paper of the production.
Optionally, the gray value according to pixel in the gray-scale map detects and whether there is spot in the paper of production,
Including：
According to setting pixel coverage, the gray-scale map is divided into multiple block of pixels；
For each block of pixels of division, according to the gray value of each pixel in the block of pixels, the pixel is determined
Corresponding gray value is more than the number of the pixel of the second gray threshold in block；
According to the number of the corresponding pixel of each block of pixels described in division, determine in the paper of production whether
There are spots.
Optionally, the number according to the corresponding pixel of each block of pixels described in division determines production
Paper in whether there is spot, including：
In the block of pixels of division, the number there are the corresponding pixel of at least one block of pixels is more than second number
When threshold value, determine that there are spots in the paper of production；Alternatively,
According to the number of the corresponding pixel of each block of pixels described in division, the corresponding pixel is determined
Number be more than second number threshold value block of pixels number；
When the number of the block of pixels is more than third number threshold value, determine that there are spots in the paper of production.
According to the technique and scheme of the present invention, by the way that the image in video flowing is converted to gray-scale map, according to picture in gray-scale map
The gray value of vegetarian refreshments detects and whether there is spot in the paper of production, and generates control instruction according to testing result, controls paper
The working method of manufacturing machine can effectively improve the quality of production of paper, reduce cost of labor, improve working efficiency.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural schematic diagram of paper production equipment provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of the gray-scale map including block of pixels provided in an embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of spot gray-scale map provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of another spot gray-scale map provided in an embodiment of the present invention；
Fig. 5 is a kind of schematic diagram of application scenarios provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of paper production equipment provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Middle attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be arranged and designed with a variety of different configurations.Therefore, below to provide in the accompanying drawings the present invention
The detailed description of embodiment is not intended to limit the range of claimed invention, but is merely representative of the selected reality of the present invention
Apply example.Based on the embodiment of the present invention, the institute that those skilled in the art are obtained without making creative work
There is other embodiment, shall fall within the protection scope of the present invention.
A kind of paper production control device of this embodiment of the present invention offer and method, to solve the prior art in paper
In production process, paper spot can not be detected, and paper production is controlled when generation spot in paper.Wherein, institute of the present invention
It states device and method and is based on same inventive concept, since the principle that device and method solve the problems, such as is similar, apparatus and method for
Implementation can be with cross-reference, overlaps will not be repeated.
Fig. 1 is according to a kind of structural schematic diagram of paper production equipment provided in an embodiment of the present invention.As shown in Figure 1, should
Equipment includes：Network hard disk video recorder 110 and analyzer 120.
Network hard disk video recorder 110 is used to receive acquires the video flowing that paper production machine produces paper by camera, and
The video is streaming to analyzer.
((Network Video Recorde, NVR) is a kind of video record equipment to network hard disk video recorder, is taken the photograph with network
Camera or video encoder match, and realize record to the digital video frequency flow to come by transmission of network, can with positioned at
The equipment of network any position is interconnected, and realizes rapid deployment, without geographical restrictions.
Camera can be but not limited to web camera (IPC), video encoder (DVS), depth camera, have and take the photograph
As the mobile terminal etc. of function, video flowing is generally digital video frequency flow, and the present invention is not intended to be limited in any this.
Analyzer 120 is used to the image in the video flowing of reception being converted to gray-scale map, and according to pixel in the gray-scale map
The gray value of point detects and whether there is spot in the paper of production, and exports control instruction according to testing result.Wherein, it controls
Instruct the production operation mode for controlling paper production machine.
Analyzer can be but not limited to computing device, the terminal with processing function, server etc., the present invention to this not
Do any restrictions.
Under normal circumstances, image refers to an image in video flowing in above-mentioned video flowing, which is coloured image, that is,
The color of each pixel in the image has red (red, R), green (green, G), blue (blue, B) 3 components to determine, Mei Gefen
The interval of amount is [0,255], traditional, and described image is carried out gray processing processing, has various ways, such as weighting is put down
Equal method, mean value method and maximum value process etc., the present invention does not limit this.
By above-mentioned discussion it is found that carrying out binary conversion treatment to above-mentioned image, gray-scale map is generated, each pixel in gray-scale map
Gray value be 0~255.
Optionally, analyzer 120 is specifically used for whether there is spot in the paper according to following steps detection production：
According to the gray value of pixel in gray-scale map, determine that corresponding gray value is more than the pixel of the first gray threshold
Number；
When the number of pixel is more than first number threshold value, determine that there are spots in the paper of production.
For example, counting the gray value of each pixel in gray-scale map, gray value is screened in statistical result and is more than the first ash
Spend the number of the pixel of threshold value such as 100.If the number of the pixel filtered out is more than first number threshold value (such as 100),
Think that there are spots in paper.The size of first gray threshold and first number threshold value should be determined on a case-by-case basis, herein example
It is only schematical.
Optionally, analyzer 120 is specifically used for whether there is spot in the paper according to following steps detection production：
According to setting pixel coverage, the gray-scale map is divided into multiple block of pixels；
For each block of pixels of division, according to the gray value of each pixel in the block of pixels, the pixel is determined
Corresponding gray value is more than the number of the pixel of the second gray threshold in block；
According to the number of the corresponding pixel of each block of pixels described in division, determine in the paper of production whether
There are spots.
Such as with reference to figure 2, gray-scale map is divided into setting pixel coverage (such as n*n) 4 block of pixels, counts each block of pixels
In each pixel gray value, count gray value in each block of pixels be more than the second gray threshold such as 50 pixel it is a
Number.The size of second gray threshold should be determined on a case-by-case basis, and no limitations are hereby intended.
Optionally, analyzer 120 is determined according to the number of the corresponding pixel of each block of pixels described in division
It whether there is spot in the paper of production, realized using any one following mode：
In the block of pixels of division, the number there are the corresponding pixel of at least one block of pixels is more than second number
When threshold value, determine that there are spots in the paper of production；
Alternatively,
According to the number of the corresponding pixel of each block of pixels described in division, the corresponding pixel is determined
Number be more than second number threshold value block of pixels number；
When the number of the block of pixels is more than third number threshold value, determine that there are spots in the paper of production.
Such as with reference to figure 3, counting the number that pixel is more than the second gray threshold in each block of pixels (4 block of pixels) is
No more than second number threshold value (such as 50) is considered as depositing in the paper of production as long as finding the above situation in a block of pixels
In spot.The size of second number threshold value should be determined on a case-by-case basis, and no limitations are hereby intended.
Such as with reference to figure 4, the gray value for counting pixel in each block of pixels (such as 4 block of pixels) is more than the second gray scale threshold
The number of the pixel of value, the number of statistical pixel point are more than the number (such as 2) of the block of pixels of second number threshold value.Then,
Judge whether the number of above-mentioned block of pixels is more than third number threshold value (such as 1), if the number of block of pixels is more than third number
Threshold value, it is believed that there are spots in the paper of production.
Optionally, analyzer 120 is specifically used for detecting in the paper of production there are when spot when analyzer, control instruction
Include with one or more in giving an order：
Cut off paper；Suspend paper production；Reduce paper production speed.
For example, there are control instruction when spot, is generated in the paper for determining production, which can control paper life
Cutting machine cut-out in production machine has the paper of spot, and paper production machine can continue to produce paper；Alternatively, the control instruction can be with
The pause paper production work of paper production machine is controlled, paper is handled by field personnel, then again by staff
Start paper production machine；Alternatively, control instruction control paper production machine reduces paper production speed, that is, reduce paper production machine
Speed, so that staff is to there is the paper of spot to handle, then, restore paper production machine speed.
As an alternative embodiment, the present invention can also include：Programmable logic controller (PLC) (PLC) interface and can
Programmed logic controller (PLC).
PLC interface is used to receive the control instruction of the analyzer, and the control instruction is transferred to PLC.PLC is used for
The production operation mode of the paper production machine is controlled according to the control instruction.
Such as with reference to figure 5, there are spot and after generating control instruction, control instruction is led in detecting paper for analyzer
It crosses PLC interface and is sent to PLC, PLC controls paper production machine and carries out such as cut-out paper, pause paper production, reduces paper production
The operations such as speed.There are many controllers for controlling the working method of paper production machine, and the present invention does not limit this.
According to the technique and scheme of the present invention, by the way that the image in video flowing is converted to gray-scale map, according to picture in gray-scale map
The gray value of vegetarian refreshments detects and whether there is spot in the paper of production, and generates control instruction according to testing result, controls paper
The working method of manufacturing machine can effectively improve the quality of production of paper, reduce cost of labor, improve working efficiency.
Fig. 6 is a kind of flow chart of paper production control method provided in an embodiment of the present invention.As shown in fig. 6, this method
It is executed in paper production control device, starts from step S610.
In step S610, is received using network hard disk video recorder and paper production machine production paper is acquired by camera
Video flowing.
In step S620, the image in the video flowing of reception is converted into gray-scale map.
In step S630, according to the gray value of pixel in the gray-scale map, detect in the paper of production with the presence or absence of dirt
Stain.
Optionally, the gray value according to pixel in the gray-scale map detects and whether there is spot in the paper of production,
Including：
According to the gray value of pixel in the gray-scale map, determine that corresponding gray value is more than the pixel of the first gray threshold
The number of point；
When the number of the pixel is more than first number threshold value, determine that there are spots in the paper of the production.
Optionally, the gray value according to pixel in the gray-scale map detects and whether there is spot in the paper of production,
Including：
According to setting pixel coverage, the gray-scale map is divided into multiple block of pixels；
For each block of pixels of division, according to the gray value of each pixel in the block of pixels, the pixel is determined
Corresponding gray value is more than the number of the pixel of the second gray threshold in block；
According to the number of the corresponding pixel of each block of pixels described in division, determine in the paper of production whether
There are spots.
Optionally, the number according to the corresponding pixel of each block of pixels described in division determines production
Paper in whether there is spot, including：
In the block of pixels of division, the number there are the corresponding pixel of at least one block of pixels is more than second number
When threshold value, determine that there are spots in the paper of production；Alternatively,
According to the number of the corresponding pixel of each block of pixels described in division, the corresponding pixel is determined
Number be more than second number threshold value block of pixels number；
When the number of the block of pixels is more than third number threshold value, determine that there are spots in the paper of production.
In step S640, the production operation mode of the paper production machine is controlled according to testing result.
Optionally, according to one or more in giving an order：Cut off paper；Suspend paper production；Reduce paper production
The production operation mode of speed control paper production machine.
A kind of paper production control device that the embodiment of the present invention is provided can be specific hardware or peace in equipment
Loaded on the software or firmware etc. in equipment.The technique effect of the device that the embodiment of the present invention is provided, realization principle and generation
Identical with preceding method embodiment, to briefly describe, device embodiment part does not refer to place, can refer to preceding method embodiment
Middle corresponding contents.It is apparent to those skilled in the art that for convenience and simplicity of description, foregoing description is
The specific work process of system, device and unit can refer to the corresponding process in above method embodiment, no longer superfluous herein
It states.
In embodiment provided by the present invention, it should be understood that disclosed device and method, it can be by others side
Formula is realized.The apparatus embodiments described above are merely exemplary, for example, the division of the unit, only one kind are patrolled
Volume function divides, formula that in actual implementation, there may be another division manner, in another example, multiple units or component can combine or can
To be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
It connects, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in embodiment provided by the invention can be integrated in a processing unit, also may be used
It, can also be during two or more units be integrated in one unit to be that each unit physically exists alone.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing, in addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific implementation mode of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention.The protection in the present invention should all be covered
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. a kind of paper production control device, which is characterized in that including：
Network hard disk video recorder for receiving the video flowing for acquiring paper production machine production paper by camera, and this is regarded
Frequency is streaming to analyzer；
The analyzer is converted to gray-scale map for the image in the video flowing by reception, will be described according to setting pixel coverage
Gray-scale map is divided into multiple block of pixels, for each block of pixels of division, according to the ash of each pixel in the block of pixels
Angle value determines that corresponding gray value in the block of pixels is more than the number of the pixel of gray threshold, according to the described each of division
The number of the corresponding pixel of a block of pixels, determines and whether there is spot in the paper of production, in the block of pixels of division,
When being more than first number threshold value there are the number of the corresponding pixel of at least one block of pixels, determines and deposited in the paper of production
In spot, and control instruction is exported according to testing result；The production that the control instruction is used to control the paper production machine is made
Industry mode.
2. equipment as described in claim 1, which is characterized in that further include：
Programmable logic controller (PLC) PLC interface, the control instruction for receiving the analyzer, and the control instruction is transmitted
To PLC；
The PLC, the production operation mode for controlling the paper production machine according to the control instruction.
3. equipment as described in claim 1, which is characterized in that the analyzer is specifically used for：
When the analyzer detects in the paper of production there are when spot, the control instruction includes with one in giving an order
Kind is a variety of：
Cut off paper；
Suspend paper production；
Reduce paper production speed.
4. equipment as described in claim 1, which is characterized in that the analyzer is specifically used for：
According to the number of the corresponding pixel of each block of pixels described in division, of the corresponding pixel is determined
Number of the number more than the block of pixels of first number threshold value；
When the number of the block of pixels is more than second number threshold value, determine that there are spots in the paper of production.
5. a kind of paper production control method, which is characterized in that including：
It is received using network hard disk video recorder and the video flowing that paper production machine produces paper is acquired by camera；
Image in the video flowing of reception is converted into gray-scale map；
According to setting pixel coverage, the gray-scale map is divided into multiple block of pixels；
For each block of pixels of division, according to the gray value of each pixel in the block of pixels, determine in the block of pixels
Corresponding gray value is more than the number of the pixel of gray threshold；
According to the number of the corresponding pixel of each block of pixels described in division, determines and whether there is in the paper of production
Spot；
In the block of pixels of division, the number there are the corresponding pixel of at least one block of pixels is more than first number threshold value
When, determine that there are spots in the paper of production；
The production operation mode of the paper production machine is controlled according to testing result.
6. method as claimed in claim 5, which is characterized in that described according to the corresponding institute of each block of pixels described in division
The number of pixel is stated, determines and whether there is spot in the paper of production, including：
According to the number of the corresponding pixel of each block of pixels described in division, of the corresponding pixel is determined
Number of the number more than the block of pixels of first number threshold value；
When the number of the block of pixels is more than second number threshold value, determine that there are spots in the paper of production.
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| CN201710221156.6A CN107012717B (en) | 2017-04-06 | 2017-04-06 | A kind of paper production control device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221156.6A CN107012717B (en) | 2017-04-06 | 2017-04-06 | A kind of paper production control device and method |
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| CN108460900A (en) * | 2018-03-02 | 2018-08-28 | 深圳怡化电脑股份有限公司 | A kind of method, apparatus, equipment and storage medium for calculating bank note and being stained grade |
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| JPH04352895A (en) * | 1991-05-30 | 1992-12-07 | Toshiba Corp | Controller of paper machine |
| WO2005076230A1 (en) * | 2004-02-05 | 2005-08-18 | Nv Bekaert Sa | Optical system for controlling value documents |
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2017
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