CN108364287A - A kind of monitoring foreign bodies method, apparatus and stamping system - Google Patents
A kind of monitoring foreign bodies method, apparatus and stamping system Download PDFInfo
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- CN108364287A CN108364287A CN201810140553.5A CN201810140553A CN108364287A CN 108364287 A CN108364287 A CN 108364287A CN 201810140553 A CN201810140553 A CN 201810140553A CN 108364287 A CN108364287 A CN 108364287A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012216 screening Methods 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 18
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/0008—Industrial image inspection checking presence/absence
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration by the use of local operators
- G06T5/30—Erosion or dilatation, e.g. thinning
-
- G06T5/70—
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/13—Edge detection
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30108—Industrial image inspection
Abstract
The present invention relates to monitoring technical field, a kind of monitoring foreign bodies method, apparatus and stamping system are disclosed.Monitoring foreign bodies method obtains stamped area image including the use of image capture device；The area-of-interest in stamped area image is filtered out according to the gray value information of stamped area image；The target area that gray value is in target zone is filtered out in the region of interest；Judge that stamped area whether there is foreign matter according to the geometric properties of target area.It can know whether method for distinguishing has foreign matter to fall to monitor in stamped area using gradation of image in this way, reduce the accuracy that manpower also improves monitoring.The monitoring foreign bodies device of the present invention includes image capture device, backlight, controller and warning device.The stamping system of the present invention includes above-mentioned monitoring foreign bodies device and press machine, can accurately monitor its stamped area in real time and whether there is foreign matter, save manpower, ensured the safety of punching production.
Description
Technical field
The present invention relates to monitoring technical fields, in particular to a kind of monitoring foreign bodies method, apparatus and press machine system
System.
Background technology
Press machine is a kind of efficient metal working machine tool, is widely used in the multiple fields such as machinery, automobile, aerospace
Part processing.Press machine makes flow of metal by the closure of upper/lower die, obtains the part of regulation shape.In punching course
In will appear because the reasons such as vibrations cause the parts such as screw on mold to fall on lower mold, while punching press in producing
Waste material also can adhesion on the upper mold, fallen to after being taken up by upper mold on lower mold.Since there are these foreign matter meetings for lower mold
Entire mold is destroyed after causing mold to be closed, needs to monitor situation in mold in real time, once occur that foreign matter is fallen or waste material is winged
It rises, cleaning can be shut down in time.Currently, situation in mold is checked often through the worker of operation press machine by many manufacturing enterprises,
It finds that foreign matter is fallen by operator, shuts down exclude foreign matter in time.But since press machine is lathe of working continuously, and punching press
Frequency is high, and actual needs cannot be met by only detecting by an unaided eye, and increases the labor intensity of worker.
Invention content
The first object of the present invention is to provide a kind of monitoring foreign bodies method, can monitor the Stamping Area of press machine in real time
Whether with the presence of foreign matter in domain, precision is high and reduces the labor intensity of worker.
The second object of the present invention is to provide a kind of monitoring foreign bodies device, can realize above-mentioned monitoring foreign bodies side
Method, whether the stamped area that can effectively monitor press machine has foreign matter, and precision is high.
The third object of the present invention is to provide a kind of stamping system comprising above-mentioned monitoring foreign bodies device, it can
Its stamped area is accurately monitored in real time and whether there is foreign matter, saves manpower, has ensured the safety of production.
What the embodiment of the present invention was realized in：
A kind of monitoring foreign bodies method is applied to press machine comprising：
Image capture device and backlight are relatively arranged on to the both sides of stamped area, is obtained and is rushed using image capture device
Pressure area area image；
The area-of-interest in stamped area image is filtered out according to the gray value information of stamped area image；
The target area that gray value is in target zone is filtered out in the region of interest；
Judge that stamped area whether there is foreign matter according to the geometric properties of target area.
In an embodiment of the present invention, after obtaining stamped area image using image capture device, to punching press
Area image carries out noise reduction, smooth pretreatment.
In an embodiment of the present invention, stamped area image is filtered out according to the gray value information of stamped area image
In area-of-interest, specifically include：
The first default gray value is determined according to the maximum gradation value in stamped area image；
The region that gray value in stamped area is more than the first default gray value is filtered out, the first default gray value is less than maximum
Gray value；
Identify that gray value is more than the maximum outer profile in the region of the first default gray value in stamped area.
In an embodiment of the present invention, stamped area image is filtered out according to the gray value information of stamped area image
In area-of-interest, further include specifically：
First time filling processing, corrosion treatment and second of filling processing are carried out to the region in maximum outer profile.
In an embodiment of the present invention, the target that gray value is in target zone is filtered out in the region of interest
Region specifically includes：
The second default gray value is determined according to the minimum gradation value in stamped area image；
It filters out gray value in area-of-interest and is less than the region of the second default gray value as target area；Second is default
Gray value is more than minimum gradation value, is less than the first default gray value.
In an embodiment of the present invention, when judgement stamped area there are when foreign matter, send out alarm signal.
A kind of monitoring foreign bodies device provided by the invention is applied to press machine comprising：
Backlight；
With the image capture device of backlight relative spacing setting, image capture device is for obtaining stamped area image；
Warning device；And
The controller being electrically connected with image capture device and warning device；
Wherein, controller includes for screening the region screening module of area-of-interest, for being sieved from area-of-interest
The object filtering module of selecting target area, the judgement mould for judging whether foreign matter according to the geometric properties of target area
Block and alarm control module for controlling warning device.
In an embodiment of the present invention, region screening module includes：
First gray count unit, for determining the first default gray value according to maximum gradation value in stamped area image,
First default gray value is less than the maximum gradation value in stamped area image；
Screening unit is more than the region of the first default gray value for filtering out gray value in stamped area image；
Outline identification unit, gray value is more than the region of the first default gray value most in stamped area image for identification
Big outer profile；
Regional processing unit, for optimizing processing to the region in maximum outer profile.
In an embodiment of the present invention, object filtering module includes：
Second gray count unit, for determining the second default gray value according to minimum gradation value in stamped area image,
Second default gray value is more than the minimum gradation value in stamped area image, and is less than the first default gray value；
Object-recognition unit, for identification in region of interest area image gray value be less than the second default gray value region,
To obtain target area.
A kind of stamping system of the present invention comprising press machine and the monitoring foreign bodies such as any one of claim 7-9
Device；Press machine includes upper mold and lower mold, and stamped area, backlight and Image Acquisition are formed between upper mold and lower mold
Equipment is located at the both sides of stamped area and is oppositely arranged.
The advantageous effect of the embodiment of the present invention is：
The monitoring foreign bodies method of the embodiment of the present invention includes that image capture device and backlight are relatively arranged on Stamping Area
The both sides in domain obtain stamped area image using image capture device；It is filtered out according to the gray value information of stamped area image
Area-of-interest in stamped area image；The target area that gray value is in target zone is filtered out in the region of interest
Domain；Judge that stamped area whether there is foreign matter according to the geometric properties of target area.Gradation of image identification can be utilized in this way
Whether method has foreign matter to fall to monitor in stamped area, reduces the accuracy that manpower also improves monitoring.
The monitoring foreign bodies device of the embodiment of the present invention includes image capture device, backlight, controller and warning device,
It can realize above-mentioned monitoring method and there are send out alarm signal when foreign matter in judgement.
The stamping system of the embodiment of the present invention includes above-mentioned monitoring foreign bodies device and press machine, can be accurately real
When monitor its stamped area whether there is foreign matter, save manpower, ensured the safety of punching production.
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 the schematic diagram of stamping system in an embodiment of the present invention；
Fig. 2 is the flow chart of monitoring foreign bodies method in an embodiment of the present invention；
Fig. 3 is the flow chart that stamped area image is obtained in an embodiment of the present invention；
Fig. 4 is the flow chart that the area-of-interest in stamped area image is filtered out in an embodiment of the present invention；
Fig. 5 is the flow chart that target area is filtered out in an embodiment of the present invention；
Fig. 6 is the schematic diagram of controller in an embodiment of the present invention；
Fig. 7 is the schematic diagram of image receiver module in an embodiment of the present invention；
Fig. 8 is the schematic diagram of region screening module in an embodiment of the present invention；
Fig. 9 is the schematic diagram of object filtering module in an embodiment of the present invention.
In figure：10- stamping systems；Mold under 11-；12- backlights；13- image capture devices；14- height adjustment mechanisms；
15- warning devices；16- workpiece；100- controllers；110- image receiver modules；112- receiving units；114- pretreatment units；
The regions 120- screening module；122- the first gray count units；124- screening units；126- outline identification units；The regions 128-
Processing unit；130- object filtering modules；132- the second gray count units；134- object-recognition units；140- judgment modules；
150- alarm control modules.
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
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment 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 implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without creative efforts belongs to the model that the present invention protects
It encloses.
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 the description of the embodiment of the present invention, it should be noted that the side of the instructions such as term "upper", "lower", "inner", "outside"
Position or position relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the side usually put
Position or position relationship, are merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device or member
Part must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.This
Outside, term " first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
In the description of the embodiment of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term
" setting ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, can also be electrical connection；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned term with concrete condition
Concrete meaning in embodiments of the present invention.
Fig. 1 is the schematic diagram of stamping system 10 in an embodiment of the present invention.Fig. 1 is please referred to, in a kind of reality of the present invention
It applies in example, stamping system 10 includes press machine and monitoring foreign bodies device.Press machine includes upper mold (not shown)
And lower mold 11, form stamped area between upper mold and lower mold 11.In a kind of optional, band-like workpiece 16
It is sent along its length to the upper surface placement of lower mold 11, and by upper mold punch forming.
Monitoring foreign bodies device includes image capture device 13, backlight 12, warning device 15 and is acquired with described image
The controller 100 that equipment 13 and warning device 15 are electrically connected, controller 100 simultaneously also with punching press mechatronics.Image Acquisition is set
It is respectively arranged at the both sides of stamped area for 13 and backlight 12, is preferably located in the both sides of strip transmission direction, backlight 12
Light towards image capture device 13, the camera lens of image capture device 13 is towards backlight 12.Image capture device 13 is used for
Stamped area image is obtained, backlight 12 is used to provide enough light to image capture device 13 to improve entire stamped area
Brightness the light of the offer of backlight 12 can be blocked, therefore by image when foreign matter is fallen between upper mold and lower mold 11
Collecting device 13 captures the lower region of gray value, and to judge stamped area, there are foreign matters.
When the judgement of controller 100 is there are when foreign matter, controller 100 controls 15 alert of warning device, to remind
Worker's stamping press is abnormal.In an embodiment of the present invention, controller 100 is monitoring, there are when foreign matter, may be used also
To stop press machine operation, production accident is prevented.
In an embodiment of the present invention, image capture device 13 is industrial camera, is set to height adjustment mechanism
On 14, height adjustment mechanism 14 includes cylinder (not shown), and cylinder is electrically connected with controller 100 so that Image Acquisition is set
Standby 13 height is adjustable.In the embodiment in figure 1, can multiple images collecting device 13 be set along the conveying direction of workpiece 16, than
Such as 4, in further embodiments, the number of image capture device 13 can be increased and decreased according to actual conditions；Height is adjusted
The cylinder of section mechanism 14 could alternatively be other driving devices such as hydraulic cylinder, linear motor, and image capture device 13 can also be set
It is placed on the uncontrollable fixing bracket of height.
Preferably, the height of backlight 12 should be more than the maximum spacing of upper/lower die 11, so that entire Stamping Area
Domain can be illuminated, and backlight 12 is chosen as LED light.
In an embodiment of the present invention, controller 100 can be have program stored therein the microcontroller of module, PLC or
PC.The alarm signal that warning device 15 can be sent out includes the light and alarm of flicker.
Fig. 2 is the flow chart of monitoring foreign bodies method in an embodiment of the present invention.The monitoring foreign bodies method can be applied to
In above-mentioned stamping system 10, please refers to Fig. 2 and combine Fig. 1, in an embodiment of the present invention, monitoring foreign bodies method packet
It includes：
S1, the both sides that image capture device 13 and backlight 12 are relatively arranged on to stamped area, are set using Image Acquisition
Standby 13 obtain stamped area image.
S2, the area-of-interest in stamped area image is filtered out according to the gray value information of stamped area image.
By taking monitoring foreign bodies device provided in an embodiment of the present invention as an example, the controller 100 of monitoring foreign bodies device may include
Region screening module, to filter out area-of-interest by the gray value of image.Because the picture material of stamped area may wrap
Containing the part having lost focus, such as when upper mold is depressed, the image with upper mold in image, and on area-of-interest is often
Part between lower mold 11, the foreign matter in area-of-interest is to be easy to influence stamping press, therefore only to area-of-interest
The foreign matter of middle appearance is monitored.
S3, the target area that gray value is in target zone is filtered out in the region of interest.
By taking monitoring foreign bodies device provided in an embodiment of the present invention as an example, the controller 100 of monitoring foreign bodies device may include
Object filtering module, to filter out the target area that gray value is in target zone from area-of-interest.
S4, judge that stamped area whether there is foreign matter according to the geometric properties of target area.
By taking monitoring foreign bodies device provided in an embodiment of the present invention as an example, the controller 100 of monitoring foreign bodies device may include
Judgment module, to judge that the geometric properties of target area judge whether target area is caused by foreign matter, to judge punching press
Region whether there is foreign matter, and the standard of judgement can be size or/and shape, for example the size on a preset direction is in
It can be determined that for foreign matter, long and narrow slice may be band-like workpiece 16 for another example, therefore will not be judged between 0.5cm~10cm
Break as foreign matter.
In an embodiment of the present invention, when there are execute step S41 when foreign matter for judgement：Send out alarm signal；When sentencing
Step S42 is executed when foreign matter being not present surely：Continue monitoring foreign bodies.It should be appreciated that in some embodiments of the invention, step
Rapid S41 can also include stopping press machine operation.
Fig. 3 is the flow chart that stamped area image is obtained in an embodiment of the present invention.Fig. 3 is please referred to, the present invention's
In a kind of embodiment, may include in step S1：
S11, the stamped area image that image capture device 13 acquires is received.
S12, noise reduction, smooth pretreatment are carried out to the stamped area image of reception.
By taking monitoring foreign bodies device provided in an embodiment of the present invention as an example, it can be wrapped in the controller 100 of monitoring foreign bodies device
Receiving unit and pretreatment unit are included to realize step S11 and step S12 respectively.
Fig. 4 is the flow chart that the area-of-interest in stamped area image is filtered out in an embodiment of the present invention.It please join
According to Fig. 4, in an embodiment of the present invention, step S2 can specifically include：
S21, the first default gray value is determined according to the maximum gradation value in stamped area image.
S22, the region that gray value in stamped area is more than the first default gray value is filtered out.Wherein, the first default gray scale
Value is less than maximum gradation value.
Gray value is more than the maximum outer profile in the region of the first default gray value in S23, identification stamped area.
S24, the region in maximum outer profile is carried out at first time filling processing, corrosion treatment and second of filling
Reason.
By taking the monitoring foreign bodies device in the embodiment of the present invention as an example, the region screening module in controller 100 can wrap
The first gray count unit, screening unit, outline identification unit and regional processing unit are included, to execute step S21, step respectively
Rapid S22, step S23 and step S24.Region ash as a result of backlight 12, therefore between upper mold and lower mold 11
Angle value is higher, and brightness is larger, this region is screened as area-of-interest, therefore it is also to be understood that is moved in upper mold
In the process, the profile of area-of-interest is real-time change.First default gray value can subtract one with maximum gradation value
Offset obtains.For example, maximum gradation value is 220, offset 20 is can use, then the first default gray value is 200, then feeling
The standard in interest region is then region of the gray value 200~220.Due to, there may be foreign matter, causing to carry on the back in area-of-interest
The light of light source 12 is blocked, and then display gray shade value is relatively low on image.In this case this can be screened out by above-mentioned screening technique
Therefore the low gray value region in part needs the target area monitored to retain this part, identify that gray value is big in stamped area
Maximum outer profile in the region of the first default gray value, all ranges in maximum outer profile are all used as area-of-interest.
Specifically, step S23 may include identifying that gray value is more than first in stamped area using limb recognition algorithm
The profile in the region of default gray value, then largest contours are filtered out by conditional filtering operator.Step S24 may include using unrestrained
Water filling algorithm carries out first time filling processing to profile；Then corrosion treatment is carried out, the reflective interference at edge is eliminated；It is right again
Image after corrosion treatment carries out second of filling processing, obtains good area-of-interest.
Fig. 5 is the flow chart that target area is filtered out in an embodiment of the present invention.Fig. 5 is please referred to, the one of the present invention
In kind embodiment, step S3 can specifically include：
S31, the second default gray value is determined according to the minimum gradation value in stamped area image.
S32, it filters out gray value in area-of-interest and is less than the region of the second default gray value as target area.Second
Default gray value is more than minimum gradation value, but is less than the first default gray value.
By taking the monitoring foreign bodies device in the embodiment of the present invention as an example, the object filtering module in controller 100 can wrap
The second gray count unit and object-recognition unit are included, to realize step S31 and step S32 respectively.Executing S32 steps
Before, it can first cut out area-of-interest and carry out step S32 again.Second default gray value can add one by minimum gradation value
A offset obtains, for example minimum gradation value is 40, offset 20, then the second default gray value is 60, region of interest
Target area in domain is then region of the gray value 40~60.
Fig. 6 is the schematic diagram of controller 100 in an embodiment of the present invention.Fig. 6 is please referred to, in a kind of implementation of the present invention
In example, controller 100 includes：
Image receiver module 110, the image information for receiving the conveying of image capture device 13.
Region screening module 120, for filtering out area-of-interest.
Object filtering module 130, for filtering out target area from area-of-interest.
Judgment module 140, for judging whether foreign matter according to the geometric properties of target area.
Alarm control module 150, for when there are control warning device 15 when foreign matter to alarm for judgement；The present invention's
In some embodiments, it is out of service that alarm control module 150 can also control press machine.
Fig. 7 is the schematic diagram of image receiver module 110 in an embodiment of the present invention.Image receiver module 110 can wrap
It includes：
Receiving unit 112, the stamped area image for receiving the acquisition of image capture device 13.
Pretreatment unit 114 carries out noise reduction, smooth pretreatment for the stamped area image to reception.
Fig. 8 is the schematic diagram of region screening module 120 in an embodiment of the present invention.Region screening module 120 can wrap
It includes：
First gray count unit 122, for determining the first default gray scale according to maximum gradation value in stamped area image
Value.
Screening unit 124 is more than the region of the first default gray value for filtering out gray value in stamped area.Wherein,
First default gray value is less than maximum gradation value.
Outline identification unit 126, gray value is more than the region of the first default gray value most in stamped area for identification
Big outer profile.
Regional processing unit 128, for in maximum outer profile region carry out first time filling processing, corrosion treatment with
And second of filling processing, to obtain good area-of-interest.
Fig. 9 is the schematic diagram of object filtering module 130 in an embodiment of the present invention.Object filtering module 130 can wrap
It includes：
Second gray count unit 132, for determining the second default gray scale according to minimum gradation value in stamped area image
Value.
Object-recognition unit 134 is less than the region of the second default gray value for filtering out gray value in area-of-interest
As target area.Wherein, the second default gray value is more than minimum gradation value, but is less than the first default gray value.
After target area is selected, judgment module 140 can judge this according to the size of target area or/and shape
Whether target area is as caused by the foreign matter in stamped area, and target area not generates for foreign matter in some cases；
In some cases, foreign matter size is excessively tiny to ignore.When being determined to have foreign matter, the control report of alarm control module 150
Alarm device 15 sends out alarm signal, to remind staff that stamping press is abnormal, if it is decided that be not present foreign matter when, then after
Continuous monitoring.
In conclusion the monitoring foreign bodies method of the present invention includes that image capture device and backlight are relatively arranged on punching press
The both sides in region obtain stamped area image using image capture device；It is screened according to the gray value information of stamped area image
Go out the area-of-interest in stamped area image；The target area that gray value is in target zone is filtered out in the region of interest
Domain；Judge that stamped area whether there is foreign matter according to the geometric properties of target area.Gradation of image identification can be utilized in this way
Whether method has foreign matter to fall to monitor in stamped area, reduces the accuracy that manpower also improves monitoring.
The monitoring foreign bodies device of the embodiment of the present invention includes image capture device, backlight, controller and warning device,
It can realize above-mentioned monitoring method and there are send out alarm signal when foreign matter in judgement.
The stamping system of the embodiment of the present invention includes above-mentioned monitoring foreign bodies device and press machine, can be accurately real
When monitor its stamped area whether there is foreign matter, save manpower, ensured the safety of punching production.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of monitoring foreign bodies method is applied to press machine, which is characterized in that it includes：
Image capture device and backlight are relatively arranged on to the both sides of stamped area, is obtained and is rushed using described image collecting device
Pressure area area image；
The area-of-interest in the stamped area image is filtered out according to the gray value information of the stamped area image；
The target area that gray value is in target zone is filtered out in the area-of-interest；
Judge that the stamped area whether there is foreign matter according to the geometric properties of the target area.
2. monitoring foreign bodies method according to claim 1, it is characterised in that：
After obtaining stamped area image using described image collecting device, noise reduction is carried out to the stamped area image, is put down
Sliding pretreatment.
3. monitoring foreign bodies method according to claim 1, which is characterized in that the ash according to the stamped area image
Angle value information sifting goes out the area-of-interest in the stamped area image, specifically includes：
The first default gray value is determined according to the maximum gradation value in the stamped area image；
Filter out the region that gray value in the stamped area is more than the described first default gray value, the first default gray value
Less than the maximum gradation value；
Identify that gray value is more than the maximum outer profile in the region of the described first default gray value in the stamped area.
4. monitoring foreign bodies method according to claim 3, which is characterized in that the ash according to the stamped area image
Angle value information sifting goes out the area-of-interest in the stamped area image, further includes specifically：
First time filling processing, corrosion treatment and second of filling processing are carried out to the region in the maximum outer profile.
5. monitoring foreign bodies method according to claim 3, which is characterized in that filter out gray scale in the area-of-interest
Target area of the value in target zone, specifically includes：
The second default gray value is determined according to the minimum gradation value in the stamped area image；
It filters out gray value in the area-of-interest and is less than the region of the second default gray value as the target area；It is described
Second default gray value is more than the minimum gradation value, is less than the described first default gray value.
6. monitoring foreign bodies method according to any one of claims 1-5, it is characterised in that：
When judging that the stamped area there are when foreign matter, sends out alarm signal.
7. a kind of monitoring foreign bodies device is applied to press machine, which is characterized in that it includes：
Backlight；
With the image capture device of backlight relative spacing setting, described image collecting device is for obtaining stamped area figure
Picture；
Warning device；And
The controller being electrically connected with described image collecting device and the warning device；
Wherein, the controller includes for screening the region screening module of area-of-interest, being used for from the area-of-interest
In filter out the object filtering module of target area, for judging whether foreign matter according to the geometric properties of the target area
Judgment module and alarm control module for controlling the warning device.
8. the monitoring foreign bodies device according to any one of claim 7, which is characterized in that the region screening module packet
It includes：
First gray count unit, for determining the first default gray value according to maximum gradation value in the stamped area image,
The first default gray value is less than the maximum gradation value in the stamped area image；
Screening unit is more than the region of the first default gray value for filtering out gray value in the stamped area image；
Outline identification unit, gray value is more than the region of the first default gray value most in the stamped area image for identification
Big outer profile；
Regional processing unit, for optimizing processing to the region in the maximum outer profile.
9. according to the monitoring foreign bodies device described in claim 8, which is characterized in that the object filtering module includes：
Second gray count unit, for determining the second default gray value according to minimum gradation value in the stamped area image,
The second default gray value is more than the minimum gradation value in the stamped area image, and is less than the described first default gray scale
Value；
Object-recognition unit, for identification in the region of interest area image gray value be less than the described second default gray value area
Domain, to obtain target area.
10. a kind of stamping system, which is characterized in that it include press machine and as claimed in any one of claims 7-9 it is different
Object monitoring device；The press machine includes upper mold and lower mold, and Stamping Area is formed between the upper mold and the lower mold
Domain, the backlight are located at the both sides of the stamped area with described image collecting device and are oppositely arranged.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109409282A (en) * | 2018-10-24 | 2019-03-01 | 珠海瑞天安科技发展有限公司 | A kind of airfield runway foreign object detection method and system |
| CN111751898A (en) * | 2020-07-03 | 2020-10-09 | 广东科学技术职业学院 | Device and method for detecting whether core print falls off |
| CN112308072A (en) * | 2020-11-06 | 2021-02-02 | 中冶赛迪重庆信息技术有限公司 | Scattered blanking identification method and system for scrap steel yard, electronic equipment and medium |
| CN116228751A (en) * | 2023-05-06 | 2023-06-06 | 武汉新威奇科技有限公司 | Screw press abnormality early warning method, system and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180374A (en) * | 1998-12-15 | 2000-06-30 | Matsushita Electric Ind Co Ltd | Method for detecting defect |
| JP2003018372A (en) * | 2001-06-29 | 2003-01-17 | Konica Corp | Image pickup device |
| CN104441526A (en) * | 2014-09-24 | 2015-03-25 | 上海智觉光电科技有限公司 | Online mold monitoring and protecting system and method based on contour matching |
| CN104616275A (en) * | 2013-11-04 | 2015-05-13 | 北京兆维电子(集团)有限责任公司 | Defect detecting method and defect detecting device |
| CN105911067A (en) * | 2016-05-17 | 2016-08-31 | 无锡赛默斐视科技有限公司 | Cable protective jacket surface defect detector and detection method thereof |
| CN107154039A (en) * | 2017-04-28 | 2017-09-12 | 北京简易科技有限公司 | The online defect detecting device of sebific duct and method |
| CN107253485A (en) * | 2017-05-16 | 2017-10-17 | 北京交通大学 | Foreign matter invades detection method and foreign matter intrusion detection means |
-
2018
- 2018-02-11 CN CN201810140553.5A patent/CN108364287B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180374A (en) * | 1998-12-15 | 2000-06-30 | Matsushita Electric Ind Co Ltd | Method for detecting defect |
| JP2003018372A (en) * | 2001-06-29 | 2003-01-17 | Konica Corp | Image pickup device |
| CN104616275A (en) * | 2013-11-04 | 2015-05-13 | 北京兆维电子(集团)有限责任公司 | Defect detecting method and defect detecting device |
| CN104441526A (en) * | 2014-09-24 | 2015-03-25 | 上海智觉光电科技有限公司 | Online mold monitoring and protecting system and method based on contour matching |
| CN105911067A (en) * | 2016-05-17 | 2016-08-31 | 无锡赛默斐视科技有限公司 | Cable protective jacket surface defect detector and detection method thereof |
| CN107154039A (en) * | 2017-04-28 | 2017-09-12 | 北京简易科技有限公司 | The online defect detecting device of sebific duct and method |
| CN107253485A (en) * | 2017-05-16 | 2017-10-17 | 北京交通大学 | Foreign matter invades detection method and foreign matter intrusion detection means |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109409282A (en) * | 2018-10-24 | 2019-03-01 | 珠海瑞天安科技发展有限公司 | A kind of airfield runway foreign object detection method and system |
| CN109409282B (en) * | 2018-10-24 | 2022-07-08 | 珠海瑞天安科技发展有限公司 | Method and system for detecting foreign objects on airfield runway |
| CN111751898A (en) * | 2020-07-03 | 2020-10-09 | 广东科学技术职业学院 | Device and method for detecting whether core print falls off |
| CN112308072A (en) * | 2020-11-06 | 2021-02-02 | 中冶赛迪重庆信息技术有限公司 | Scattered blanking identification method and system for scrap steel yard, electronic equipment and medium |
| CN116228751A (en) * | 2023-05-06 | 2023-06-06 | 武汉新威奇科技有限公司 | Screw press abnormality early warning method, system and storage medium |
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