CN104781656A - X-ray inspection device - Google Patents
X-ray inspection device Download PDFInfo
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- CN104781656A CN104781656A CN201380059007.4A CN201380059007A CN104781656A CN 104781656 A CN104781656 A CN 104781656A CN 201380059007 A CN201380059007 A CN 201380059007A CN 104781656 A CN104781656 A CN 104781656A
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
- G01N23/083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption the radiation being X-rays
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Abstract
Provided is an X-ray inspection device capable of obtaining accurate results for inspecting the number of a plurality of articles arranged in rows by a partition material inside a packaging material. An X-ray inspection device (10) is provided with an X-ray irradiation unit (13), an X-ray detection unit (14), and an inspection control unit (20). A target product (P) contains packaging material (m1) and a plurality of articles (G). The plurality of articles is arranged in rows by a partition material (m2) inside the packaging material. The X-ray irradiation unit irradiates X-rays at the target product. The X-ray detection unit detects transmitted X-rays, which are X-rays that have been transmitted through the target product. The inspection control unit inspects the number of the plurality of articles on the basis of the transmitted X-rays. The inspection control unit has an X-ray image generation unit (22a), a rectangle generation unit (22c), an area generation unit (22d), and a number inspection execution unit (22e). The X-ray image generation unit generates an X-ray image on the basis of the transmitted X-rays. The rectangle generation unit generates a rectangle that surrounds the plurality of articles on the basis of the X-ray image. The area generation unit divides the interior of the rectangle on the basis of predetermined information and generates a dividing line area (da) and a plurality of small areas (sa) inside the rectangle. The number inspection execution unit incorporates the dividing line area into the X-ray image, identifies each the plurality of articles included in the X-ray image, and performs a number inspection of the plurality of articles.
Description
Technical field
The present invention relates to X ray checking device.
Background technology
All the time, carry out x-ray bombardment while known a kind of article (object product) utilizing supply unit conveyance wrappage to pack, and carry out the X ray checking device of deficient product inspection based on the X ray (through X ray) through object product.And such as, proposing in patent documentation 1 (Japanese Patent Laid-Open 2002-228761 publication) can to the X ray checking device being carried out deficient product inspection in the inside of wrappage by the isolated multiple article of interval insulant.
Summary of the invention
The technical matters that invention will solve
But, mask (the マ ス Network) region that the X ray checking device shown in above-mentioned document detects at product of owing based on setting on the radioscopic image generated through X ray.In specialized range regulation on the x-ray image coordinate axis position on set masked areas.Its result, when the degree of tilt of the object product transported when utilizing supply unit is not fixed, can not obtain number check result accurately.
Problem of the present invention is to provide a kind of X ray checking device that can obtain the accurate result checked in the number of inner utilization interval insulant multiple article side by side of wrappage.
The technical scheme of technical solution problem
Relating to X ray checking device of the present invention is X ray checking device for check object product, comprises x-ray bombardment portion, X ray test section and checks control part.Object product comprises wrappage and multiple article.Multiple article are arranged side by side at the inner utilization interval insulant of wrappage.X-ray bombardment portion is to object product X-ray irradiation.X ray test section detects through the X ray of object product, namely through X ray.Check that control part is based on the quantity detecting multiple article through X ray.Further, check that control part has radioscopic image generating unit, rectangle generating unit, Area generation portion and number and checks enforcement division.Radioscopic image generating unit generates radioscopic image based on through X ray.Rectangle generating unit generates the rectangle of the multiple article comprised shown by radioscopic image.Area generation portion is split the inside of information according to the rules to rectangle, and generates cut-off rule region and multiple zonule at rectangle inside.Number checks that cut-off rule region is incorporated to radioscopic image by enforcement division, and each in identifying multiple article that radioscopic image comprises, carry out the number inspection of multiple article.
Relate to the rectangle that X ray checking device of the present invention generates the multiple article comprised shown by radioscopic image.Further, cut-off rule region and multiple zonule is generated in the inside of rectangle.Number checks that cut-off rule region is incorporated to radioscopic image by enforcement division, and identifies each in multiple article, carries out the number inspection of article.Thus, even if adjacent article contacts, the accurate result that number checks also can be obtained.
And number checks enforcement division preferably according to the radioscopic image being incorporated to cut-off rule region, identifies multiple article profile separately, carries out the number inspection of multiple article.The divided line region segmentation of image of overlapping article.Thus, each article can be specified.
And, number check enforcement division preferably generate from radioscopic image, eliminate cut-off rule region image, namely process image, and carry out the number inspection of multiple article according to the image of multiple article that process image comprises.Owing to forming border at the image section of the article of overlap in radioscopic image, therefore, it is possible to the number of the article comprised in check object product definitely.
And number checks whether each region that enforcement division is preferably based in multiple zonule has multiple article, carries out the number inspection of multiple article.Thus, can judge to utilize the isolated each region of interval insulant with or without article.
And, check that control part preferably has and columns information storage part.And columns information storage part stores and column number information.And the information of the column number information regulation that to be at least one party in the line number arranged side by side to multiple article and columns relevant.Further, Area generation quality award from the ministry choosing basis also column number information, generates multiple zonule and cut-off rule region in the inside of rectangle.Due to according to and column number information and cut-off rule region is incorporated to equably radioscopic image, therefore, can judge whether distinguished definitely at the multiple article in the inside of wrappage.
And the rectilinear region of crosscut is preferably carried out in the inside of rectangle by cut-off rule region.Thus, suitable deficient product inspection can be carried out to interval insulant.
And, check that control part preferably has input acceptance division.Input acceptance division receives the input of the information of regulation.Further, the choosing of Area generation quality award from the ministry, according to the information of the regulation received by input acceptance division, generates multiple zonule and cut-off rule region in the inside of rectangle.Thus, the demand of user can easily be reflected.
And, and columns information storage part preferably stores line number corresponding to interval insulant and columns.And columns information storage part stores the quantity in cut-off rule region according to often kind of wrappage.Thus, cut-off rule region can be automatically incorporated to according to wrappage.
Invention effect
According to relating to X ray checking device of the present invention, the accurate result checked in the number of inner utilization interval insulant multiple article side by side of wrappage can be obtained.
Accompanying drawing explanation
Fig. 1 relates to the stereoscopic figure of the X ray checking device of an embodiment of the invention.
Fig. 2 is the skeleton diagram of the inspection line (X-ray inspection system) comprising X ray checking device.
Fig. 3 is the simple and easy pie graph of the shielding box inside of X ray checking device.
Fig. 4 is the curve map that the example through X ray amount detected by x-ray detection device is shown.
Fig. 5 is the example of the picture shown by display.
Fig. 6 is control block diagram.
Fig. 7 is the figure of the example that the rectangle generated based on binary image is shown.
Fig. 8 is the figure of the example that cut-off rule region and the multiple zonule generated in the inside of rectangle is shown.
Fig. 9 is the process flow diagram of the treatment scheme that X ray checking device is shown.
Figure 10 is the figure of the example that radioscopic image is shown.
Figure 11 is the figure of the example that binary image is shown.
Figure 12 is the figure of the example that the rectangle generated based on binary image is shown.
Figure 13 is the figure for illustration of rectangle fitting (Off ィ ッ テ ィ Application グ).
Figure 14 is the figure for illustration of rectangle fitting.
Figure 15 is the figure for illustration of rectangle fitting.
Figure 16 is the figure for illustration of rectangle fitting.
Figure 17 is the figure of the process being incorporated to cut-off rule region for illustration of the inside at rectangle.
Figure 18 is the figure of the example that process image is shown.
Figure 19 is the example of the process for illustration of the X ray checking device relating to variation A.
Figure 20 is the example being stored in the information related in variation B columns information storage area.
Embodiment
Below, with reference to accompanying drawing, the X ray checking device relating to embodiments of the present invention is described.
(1) the outlining of X ray checking device
Fig. 1 is the stereographic map of the outward appearance that the X ray checking device 10 relating to an embodiment of the invention is shown.Further, Fig. 2 illustrates the example of the inspection line (X-ray inspection system) 100 being built-in with X ray checking device 10.Checking that line 100 carries out the inspection of the product P such as food.Check that line 100 is except comprising X ray checking device 10, also comprises upstream supply unit 60 and distributor gear 70.Upstream supply unit 60 is arranged on the upstream of X ray checking device 10.Distributor gear 70 is arranged on the downstream of X ray checking device 10.
X ray checking device, by the product P X-ray irradiation come utilizing upstream supply unit 60 to transport continuously, carries out the judgement of the quality of product P.Specifically, the number that X ray checking device 10 carries out according to the X ray amount through product P the article G that product P comprises judges (number inspection).As shown in Figure 3, product P comprises multiple article G, packs the wrappage m1 of multiple article G and the interval insulant m2 at the inner multiple article G in interval of wrappage m1.To be arranged side by side multiple article G by interval insulant m2 in the inside of wrappage m1.
When the quantity of the article G that product P comprises is consistent with the value of regulation, X ray checking device 10 judges that product P is non-defective unit.Otherwise, when the number of the article G that product P comprises and the value of regulation inconsistent time, X ray checking device 10 judges that product P is defective products.Check result in X ray checking device 10 is sent to distributor gear 70.Distributor gear 70 is connected with line supply unit 73 and defective products exhausting line 74.Distributor gear 70 will be judged as that in X ray checking device 10 product P of non-defective unit distributes to line supply unit 73, will be judged as that the product P of defective products distributes to defective products exhausting line 74.
(2) detailed description of X ray checking device
As shown in Fig. 1, Fig. 3 or Fig. 6, X ray checking device 10 is formed primarily of shielding box 11, supply unit 12, x-ray irradiation device (x-ray bombardment portion) 13, X ray line sensor (X ray test section) 14, the display 30 being with touch panel function and control device (inspection control part) 20.
(2-1) shielding box
Shielding box 11 is the boxes holding supply unit 12 described later, x-ray irradiation device 13, X ray line sensor 14, control device 20 etc.The front upper of shielding box 11, except display 30, is also configured with keyboard jack and power switch etc.Two sides of shielding box 11 are formed with opening 11a.Opening 11a is used for product P being moved into and taking out of inside and outside shielding box 11.Opening 11a crested curtain 19 blocks.Shielding curtain 19 prevents the X ray of the inside of shielding box 11 from externally leaking.Shielding curtain 19 is formed by leaded rubber.When product P is by opening 11a, shielding curtain 19 is pushed open by product P.
(2-2) supply unit
Supply unit 12 transports product P in shielding box 11.As shown in Figure 1, supply unit 12 is configured to the opening 11a of two sides be formed through at shielding box 11.As shown in Figure 3, supply unit 12 is formed primarily of band 12d, the conveyer belt roller 12c of endless, conveying motor 12a (with reference to Fig. 6).Conveyer belt roller 12c drives by carrying motor 12a.Rotated by the driving of conveyer belt roller 12c with 12d, the product P on band 12d is transported to downstream.The setting speed that the speed that supply unit 12 transports product P inputs according to operator and changing.Control device 20 carries out conversion according to setting speed to conveying motor 12a and controls, and fine controls the conveyance speed of product P.And, conveying motor 12a is provided with the conveyance speed detecting supply unit 12 and the scrambler 12b being sent to control device 20 (with reference to Fig. 6).
(2-3) x-ray irradiation device
As shown in Figure 3, x-ray irradiation device 13 is configured in the top of supply unit 12.X-ray irradiation device 13 at fan-shaped range of exposures X to X ray line sensor 14 X-ray irradiation.Range of exposures X extends vertically up to the feed surface of supply unit 12.Further, range of exposures X is fan-shaped expansion on the direction that the throughput direction with supply unit 12 intersects.That is, the X ray irradiated from x-ray irradiation device 13 is expanded at the Width of band 12d.
(2-4) X ray line sensor
As shown in Figure 3, X ray line sensor 14 is configured in the below of supply unit 12.X ray line sensor 14 is formed primarily of multiple x-ray detection device 14a.X-ray detection device 14a ground in alignment horizontal arrangement is on the direction vertical with the conveyance direction of supply unit 12.
And each x-ray detection device 14a detects the X ray amount (through X ray amount) through product P and supply unit 12, and exports based on the X-ray transparent signal through X ray amount.In other words, X-ray transparent signal export based on through the X-ray transparent signal of intensity of X ray.In addition, through the intensity-dependent of X ray in the size through X ray amount.The brightness (shading value) of radioscopic image is by X-ray transparent signal deciding (with reference to Fig. 4).Fig. 4 is the curve map that the example through X ray amount (detection limit) detected by the x-ray detection device 14a of X ray line sensor 14 is shown.The transverse axis of curve map corresponds to the position of each x-ray detection device 14a.And the transverse axis of curve map corresponds to the distance in the direction vertical with the conveyance direction of supply unit 12.And the longitudinal axis of curve map represents the transit dose (detection limit) of the X ray detected by x-ray detection device 14a.That is, the place that detection limit is large is shown as the radioscopic image of bright (light), and the place that detection limit is little is shown as the radioscopic image of dimness (dense).That is, the light and shade (deep or light) of radioscopic image is corresponding to the detection limit of X ray.
And X ray line sensor 14 also plays a role as being used for the sensor of testing product P by the timing of fan-shaped x-ray bombardment scope X (with reference to Fig. 3).Namely, when the product P transported on the band 12d of supply unit 12 arrives top position (the range of exposures X) of X ray line sensor 14, X ray line sensor 14 exports the X-ray transparent signal (the first signal) of the voltage representing below defined threshold.On the other hand, product P is by after range of exposures X, and X ray line sensor 14 exports the X-ray transparent signal (secondary signal) representing and exceed the voltage of defined threshold.Be transfused to control device 20 described later by the first signal and secondary signal, can detect in range of exposures X with or without product G.
(2-5) display
Display 30 plays a role as display part and input part.Specifically, display 30 is liquid crystal display.Display 30 shows the check result (with reference to Fig. 5) of product P.Fig. 5 is the example of the check result of product P.Further, display 30 has the function of touch panel.Therefore, display 30 receives the input of the inspection Parameter and Action set information that operator carries out etc.
Here, check that parameter is the call parameter of the number correctness for judging the article G that product P comprises.Further, action set information is the information of the conveyance direction of inspection speed and supply unit 12 etc.Further, display 30 receives input that is that operator carries out and column number information.And column number information is the information that Area generation portion 22d described later uses.The inspection parameter that display 30 receives is stored in storage part 21 described later.Display 30 is electrically connected with control device 20, carries out the signal transmitting and receiving with control device 20.
(2-6) control device
Control device 20 is primarily of formations such as CPU, ROM, RAM and HDD (hard disk).Control device 20 also has not shown display control circuit, button inputting circuits, communication port etc.Display control circuit is the circuit of the data display controlled on display 30.Button inputting circuits is the circuit obtaining the key-press input data that operator is inputted by the touch panel of display 30.Communication port can be connected with networks such as external unit and LAN such as printers.
And control device 20 is also electrically connected with above-mentioned conveying motor 12a, scrambler 12b, x-ray irradiation device 13, X ray line sensor 14 and display 30 etc.The data that the revolution that control device 20 obtains conveying motor 12a from scrambler 12b is correlated with, and the displacement of product P is grasped based on these data.Further, as mentioned above, control device 20 is by receiving the signal exported by X ray line sensor 14, and the product P detected on the band 12d of supply unit 12 arrives the timing of range of exposures X.
And as shown in Figure 6, control device 20 plays a role mainly as storage part 21 and control part 22.Control device 20 is based on the quantity of the multiple article G contained by X-ray examination product P.
(2-6-1) storage part
Storage part 21 stores the various program and inspection parameter that are performed by control part 22.As mentioned above, the touch panel function input checking parameter of display 30 is used by operator.
Storage part 21 mainly has radioscopic image storage area 21a, binary image storage area 21b and columns information storage area 21c and process image memory region 21d.
(a) radioscopic image storage area
The data (view data) relevant to the radioscopic image that image production part 22a described later generates are stored in radioscopic image storage area 21a.Radioscopic image comprises wrappage m1, interval insulant m2 included by product P and multiple article G (with reference to Figure 10).
(b) binary image storage area
The data (binaryzation data) relevant to the binary image that image production part 22a described later generates are stored in binary image storage area 21b.Binary picture similarly is the image after the binarized process of radioscopic image, only to demonstrate wrappage m1, the interval insulant m2 included by product P and the multiple article G in multiple article G (with reference to Figure 11).In addition, binary image in binary image storage area 21b is stored in and the data (view data) relevant to the radioscopic image before binarized store explicitly.
(c) columns information storage area
And columns information storage area 21c stores the information (and column number information) (with reference to Fig. 8) that the inside being used for the rectangle sq generated at rectangle generating unit 22c described later generates cut-off rule region da and zonule sa.And the column number information information that to be multiple article G of being arranged side by side to the inside at wrappage m1 relevant.Specifically, and column number information refers to the information (information of regulation) that at least one party in " line number " and " columns " be arranged side by side to multiple article G is relevant.And column number information separates the relevant information of the mode of multiple article G in other words.Such as, for checking that product P shown in Fig. 3 is necessary and in column number information, including expression line number: 2, columns: the information of 3.Further, for checking that to pack the product P of article G in the mode shown in Fig. 8 necessary and in column number information, include expression line number: 4, columns: the information of 3.
(d) process image memory region
Stores processor image in process image memory region 21d.Process image checks by number described later the image that enforcement division 22e generates.Specifically, process image refer to be incorporated in binary image based on and image after the cut-off rule region da of column number information.In addition, process in image memory region 21d the process image that stores also to store explicitly with the view data that stores in radioscopic image storage area 21a.
(2-6-2) control part
As image production part (radioscopic image generating unit) 22a, input acceptance division 22b, rectangle generating unit 22c, Area generation portion 22d, number, control part 22, by performing the various programs stored in storage part 21, checks that enforcement division 22e and good no detection unit 22f plays a role.
(a) image production part
Image production part 22a detected by X ray line sensor 14 through X ray amount make radioscopic image.Specifically, the X-ray transparent signal that each x-ray detection device 14a that image production part 22a obtains X ray line sensor 14 with the tiny time interval exports, and generate radioscopic image based on the intensity (brightness) of the X-ray transparent signal obtained.That is, image production part 22a is when product P is by the range of exposures X of fan-shaped X ray (with reference to Fig. 3), based on the X-ray transparent signal that each x-ray detection device 14a exports, generates the radioscopic image comprising product P.With or without product P in range of exposures X, the signal exported by X ray line sensor 14 is judged.
Image production part 22a, by the data in each tiny time interval relevant to the intensity (brightness) of the X ray obtained by each x-ray detection device 14a, couples together according to time series with rectangular, generates the radioscopic image about product P.The radioscopic image generated by image production part 22a is stored in radioscopic image storage area 21a.
And image production part 22a generates the binary image of radioscopic image.Specifically, the threshold value of regulation and the shading value of each pixel forming radioscopic image compare by image production part 22a, judge that the shading value of each pixel forming radioscopic image is whether below the threshold value specified, and by radioscopic image binaryzation.Wherein, the threshold value of regulation refers to the threshold value set for identifying multiple article G contained by product P and the part beyond it.Specifically, image production part 22a carries out the filtration treatment of view data, for forming in whole pixels of radioscopic image, the pixel that brightness (intensity) through X ray exceeds defined threshold represents with the gray scale (255) corresponding to white, represents with the gray scale (0) corresponding to black for the pixel below defined threshold.In addition, relevant to the binary image that image production part 22a generates data (binaryzation data) are stored in above-mentioned binary image storage area 21b.
(b) input acceptance division
Input acceptance division 22b receives the various information such as the inspection parameter that inputted from display 30 by operator and action set information.And input acceptance division 22b receives the also column number information inputted from display 30 by operator.The information that input acceptance division 22b receives is stored in storage part 21.In addition, as mentioned above, and column number information be stored in and columns information storage area 21c in.
(c) rectangle generating unit
Rectangle generating unit 22c generates the rectangle sq (with reference to Fig. 7) comprising multiple article G based on radioscopic image.Specifically, rectangle generating unit 22c obtain be included in binarized after radioscopic image (binary image) in the such minimum rectangle sq (rectangle fitting) of multiple article G of display.
More specifically, rectangle generating unit 22c is by generating vertical line and parallel line to X-axis, make its high order end by multiple article G of showing in binary image, low order end, part, bottom topmost, thus try to achieve the rectangle sq (with reference to Figure 13 to Figure 16) comprising multiple article G.
And, as shown in Figure 13 to Figure 16, rectangle generating unit 22c with binary image a bit for benchmark, binary image is rotated with predetermined angular (being 10 ° in present embodiment) at every turn, often rotate a binary image, obtain the rectangle sq comprising the multiple article G shown in postrotational binary image.Rectangle (minimum rectangle) sq specifying area minimum multiple rectangle sq that rectangle generating unit 22c tries to achieve from rotating binary image.
(d) Area generation portion
Area generation portion 22d according to and column number information (information of regulation) inside of rectangle sq is split.In other words, Area generation portion 22d generates cut-off rule region da and multiple zonule sa (with reference to Figure 17) in the inside of rectangle sq.In addition, the inner rectangle sq split by Area generation portion 22d is the minimum rectangle sq specified by rectangle generating unit 22c.
The also column number information that Area generation portion 22d receives according to input acceptance division 22b, generates cut-off rule region da and multiple zonule sa in the inside of rectangle sq.Wherein, as shown in Figure 8, cut-off rule region da is the rectilinear region of the inside of crossing rectangle sq.Parallel with the limit forming rectangle sq or vertically generate cut-off rule region da.And zonule sa refers to the region generated in the inside of rectangle sq by generating cut-off rule region da in the inside of rectangle sq.That is, zonule sa is the region in the interior zone of rectangle sq beyond the da of cut-off rule region, is the region adjacent with cut-off rule region da.
Cut-off rule region da according to and column number information by the inner homogeneous Ground Split of rectangle sq.In other words, the cut-off rule region da generated by Area generation portion 22d is configured in the inside of rectangle sq equably.Further, the size approximate equality of the zonule sa generated by Area generation portion 22d.
E () number checks enforcement division
Number checks that enforcement division 22e carries out the number inspection of the article G that product P comprises.In other words, number checks that enforcement division 22e carries out the number inspection of multiple article G of the inside being arranged side by side at wrappage m1.Radioscopic image (binary image) after number checks enforcement division 22e use binaryzation and the cut-off rule region da generated by Area generation portion 22d, carry out the number inspection of multiple article G.
Specifically, number checks that enforcement division 22e is incorporated to cut-off rule region da in binary image, generating process image (with reference to Figure 18).As mentioned above, process image be incorporated in binary image based on and the image of cut-off rule region da of column number information.In process image, the gray scale of cut-off rule region da part is set to 255.That is, in process image, cut-off rule region da is represented with white.In other words, process image to form in whole pixels of binary image, and the pixel of the part overlapping with cut-off rule region da replaces to the image after white.Specifically, the image after the image display part that removal is overlapping with cut-off rule region da from the image of the article G shown by binary image is processed.
Number checks that the image of multiple article G that enforcement division 22e is comprised by identifying processing image carries out number inspection.Specifically, number checks that enforcement division 22e is to forming in whole pixels of process image, and the part being set to the color of neighbor different is specified.Be set to the part that the different part of the color of neighbor can become the profile representing article G.Specifically, number checks that enforcement division 22e obtains the area of pixel (black picture element) continuous print part (black part) or the girth of black part that are set to black.Namely, number checks that parts different for the color being set to neighbor is judged to be the pixel (contour pixel) of the profile forming article G by enforcement division 22e, obtain the quantity (area) of the pixel of being surrounded by contour pixel, or the quantity of contour pixel (girth).Further, number checks that the threshold value of regulation and the area of black part or the girth of black part compare by enforcement division 22e, when the area of black part or the girth of black part exceed the threshold value of regulation, is judged to be that this black part is the image of article G.On the other hand, number checks that the threshold value of regulation and the area of black part or the girth of black part compare by enforcement division 22e, time below the threshold value that the area of black part or the girth of black part are regulation, be judged to be that this black part is not the image of article G, ignore this black part.
Number checks the quantity of the article G that enforcement division 22e determination processing image comprises, and result of determination is stored in above-mentioned storage part 21.In other words, number checks the quantity of the image of the article G of enforcement division 22e contained by the threshold determination process image of process image and regulation, and information relevant for the number (judgement number) of the article G to judgement is stored in above-mentioned storage part 21.
(f) good no detection unit
Good no detection unit 22f checks the number of the article G that enforcement division 22e judges according to number, carries out the judgement of the non-defective unit/defective products relevant to product P.In other words, good no detection unit 22f, according to the information relevant to the judgement number stored in storage part 21, carries out the judgement of the non-defective unit/defective products to product P.
Specifically, the number of the article G represented by the number (standard number) of the article G represented by the inspection parameter stored in storage part 21 and the information relevant to judging number compares by good no detection unit 22f, judges that whether the quantity of the article G contained by product P is correct.More specifically, whether good no detection unit 22f criterion number is consistent with judgement number, when standard number is consistent with judgement number, is then judged to be the quantity correct (being non-defective unit) of the article G contained by product P.Otherwise when standard number is with when judging that number is inconsistent, good no detection unit 22f judges the quantity incorrect (being defective products) of the article G contained by product P.
When after the difference of non-defective unit/defective products judging product P, good no detection unit 22f exports and represents that product P is the signal (result of determination) of the meaning of in non-defective unit/defective products.The signal exported by good no detection unit 22f is sent to distributor gear 70.Product P, according to the result of determination of good no detection unit 22f, is assigned to line supply unit 73 or defective products exhausting line 74 by distributor gear 70.
(3) treatment scheme
With reference to Fig. 9 to Figure 18, the treatment scheme utilizing X ray checking device 10 to carry out is described.
Product P is dropped into after in X ray checking device 10, in step S1, generated the radioscopic image (with reference to Figure 10) of product P by image production part 22a.After radioscopic image generates, the data (view data) relevant to radioscopic image are stored in radioscopic image storage area 21a.View data is stored in after in radioscopic image storage area 21a, enters step S2.
In step S2, generated the binary image (with reference to Figure 11) of radioscopic image by image production part 22a.Specifically, the threshold value of regulation and the shading value of each pixel forming radioscopic image compare by image production part 22a, judge that the shading value of each pixel is whether below the threshold value of regulation, and according to judged result, radioscopic image are carried out binaryzation.The binaryzation data generated in step S2 are stored in binary image storage area 21b.Then, step S3 is entered.
Rectangle fitting is carried out in step S3.Specifically, in step S3, obtained by rectangle generating unit 22c and comprise the so minimum rectangle sq (with reference to Fig. 7 and Figure 12) of multiple article G of showing in binary image.More specifically, rectangle generating unit 22c generates the line vertical with X-axis and parallel line, makes its high order end by multiple article G of showing in binary image, low order end, part (reference Figure 13 to Figure 16), bottom topmost.Specifically, as shown in Figure 13 to Figure 16, rectangle generating unit 22c with binary image a bit for benchmark, binary image is rotated with predetermined angular (being 10 ° in present embodiment) at every turn, often rotate a binary image, obtain the rectangle sq comprising the multiple article G shown in postrotational binary image.Then, the rectangle generating unit 22c rectangle sq that specifies area minimum from multiple rectangle sq.Afterwards, step S4 is entered.
In step S4, the inside of rectangle sq is undertaken splitting (with reference to Figure 17) by Area generation portion 22d.In other words, Area generation portion 22d according to and column number information (information of regulation), the inside of rectangle generate cut-off rule region da and multiple zonule sa.Then, step S5 is entered.
In step S5, check that cut-off rule region da is incorporated to (with reference to Figure 18) in binary image by enforcement division 22e by number.By being incorporated to cut-off rule region da generating process image in binary image.Then, step S6 is entered.
In step S6, the image of the article G contained by determination processing image.Specifically, number checks that enforcement division 22e specifies the contour pixel formed in whole pixels of process image, the pixel count (area) surrounded according to contour pixel or the quantity (girth) of contour pixel, the image of the article G contained by determination processing image.After number checks the image of the article G contained by enforcement division 22e determination processing image, information (with judging the information that number is relevant) relevant for the quantity of the image to judged article G is stored in storage part 21.Then, step S7 is entered.
In step S7, according to the inspection parameter (threshold value of regulation) relevant to standard number and the information relevant with the judgement number that stores in storage part 21, carried out the number inspection of the article G contained by product P by good no detection unit 22f.Specifically, whether good no detection unit 22f criterion number is consistent with judgement number.Wherein, when standard number is consistent with judgement number, good no detection unit 22f judges that product P is as non-defective unit.Otherwise when standard number with when judging that number is inconsistent, good no detection unit 22f judges that product P is as defective products.Then, step S8 is entered.
In step S8, the result of determination display of good no detection unit 22f on the display 30 (with reference to Fig. 5).In addition, on the display 30, except the result of determination that display is relevant to the number inspection of product P, as shown in Figure 5, the image of article G can also be shown simultaneously.Wherein, the image of the article G of display is the image (manuscript picture) after processing process image.Such as, manuscript similarly is eliminate the image after the black part being judged as the image not being article G from the whole pixels forming process image.
(4) feature
(4-1)
The X ray checking device 10 relating to above-mentioned embodiment generates the rectangle sq comprising multiple article G contained in binary image.Binary picture similarly is carry out the image after binaryzation to radioscopic image.Further, in X ray checking device 10, be incorporated to cut-off rule region sa in the inside of rectangle sq, identify each in multiple article G, carry out the number inspection of article G.Thus, even if adjacent article G contacts, also high-precision number inspection can be carried out.
The check object product P of X ray checking device transports by upstream supply unit 60 continuously.Here, the product P transported by upstream supply unit 60 is not transported with the degree of tilt fixing relative to conveyance direction.That is, product P is transferred unit 12 and transports under the state having various degree of tilt relative to conveyance direction.Here, such as, when setting masked areas on the x-ray image to carry out the number inspection of the article G contained by product P, the coordinate axis position of the scope regulation on the x-ray image of regulation sets masked areas.Its result, is difficult to carry out number inspection accurately.
But the X ray checking device 10 relating to above-mentioned embodiment generates the rectangle sq comprising the image of the article G shown in binary image, and is incorporated to cut-off rule region da in the inside of rectangle sq further.Thus, multiple article G divided line region da of contact are split, and therefore, can obtain number check result accurately.
(4-2)
And the X ray checking device 10 relating to above-mentioned embodiment, according to the binary image being incorporated to cut-off rule region da, identifies multiple article G profile separately, carries out the number inspection of multiple article G.The article G of cut-off rule region to overlap is utilized to carry out Iamge Segmentation, and the profile of image according to each article G of cut-off rule Area generation.Thus, each article G can be specified.
(4-3)
And, the X ray checking device 10 relating to above-mentioned embodiment generates and eliminate the image after the pixel of formation cut-off rule region da from whole pixel of the binarized radioscopic image of formation, namely, image is processed, and based on the image of multiple article G contained by process image, carry out the number inspection of multiple article G.Due to the image section of article G overlapping in radioscopic image forming border by cut-off rule region da, therefore, it is possible to the number of article G more properly contained by check object product P.
(4-4)
And the X ray checking device 10 relating to above-mentioned embodiment has and columns information storage area (and columns information storage part) 21c.And columns information storage area 21c stores and column number information.And column number information is the information relevant at least one item in the line number that multiple article are arranged side by side and columns.Further, X ray checking device 10 based on and column number information, generate multiple zonule sa and cut-off rule region da in the inside of rectangle sq.Due to cut-off rule region da based on and column number information and be incorporated to binary image equably, therefore, can judge the inside at wrappage m1, whether multiple article G is properly spaced out.
(4-5)
And the X ray checking device 10 relating to above-mentioned embodiment, in the inside of the rectangle sq generated binary image, crosses rectilinear region, is split equably the inside of rectangle sq.In this way, the deficient product inspection (number inspection) being applicable to interval insulant m2 can be carried out.
(4-6)
And, in the X ray checking device 10 relating to above-mentioned embodiment, receive by input acceptance division 22b the various information inputted by display 30.Input acceptance division 22b receives the input of the various information comprising number information side by side.Area generation portion 22d, according to the information received by input acceptance division 22b, generates multiple zonule sa and cut-off rule region da in the inside of rectangle sq.Thus, the demand of user can easily be reflected.
(5) variation
(5-1) variation A
In the X ray checking device 10 relating to above-mentioned embodiment, the cut-off rule region da (and zonule sa) of the inside of segmentation rectangle sq is generated by Area generation portion 22d, then, by number, cut-off rule region da checks that enforcement division 22e is merged in binary image.Specifically, number checks that the pixel forming part overlapping with cut-off rule region da in whole pixels of binary image is replaced to white by enforcement division 22e, will represent that the image section of overlapping article G separates by white line.Further, number checks that enforcement division 22e replaces to the image after white according to by the pixel with cut-off rule region da lap, judges the number of article G.
Wherein, as shown in figure 19, number checks whether enforcement division also by being incorporated to both rectangle sq and cut-off rule region da in binary image, can exist the image of article G to each region decision of the multiple zonule sa generated in rectangle sq, thus judges product of owing.Specifically, as mentioned above, number checks that enforcement division generates and is incorporated to the process image after the da of cut-off rule region to binary image, and each in the image of multiple article G contained by identifying processing image.And number checks that enforcement division judges whether the article G identified is included in each in multiple zonule sa.Its result, can judge in each zonule sa by interval insulant m2 interval with or without article G.That is, can judge whether article G is suitably arranged in the inside of wrappage m1.
(5-2) variation B
In the X ray checking device 10 relating to above-mentioned embodiment, by input acceptance division 22b receive and column number information to be stored in and in the 21c of columns information storage area, Area generation portion 22d according to and column number information splits the inside of rectangle sq.And in the 21c of columns information storage area, also can store the information relevant with columns to the multiple line number of kind corresponding to interval insulant m2 here.Specifically, as shown in figure 20, and in the 21c of columns information storage area, also can store the multiple information after the kind of interval insulant m2 being associated with line number and columns.In other words, also can store according to often kind of interval insulant m2 and in the 21c of columns information storage area and generate the necessary information of zonule sa.
And, and columns information storage area 21c also can store " quantity of cut-off rule region da " of the kind corresponding to interval insulant m2, to substitute " line number " and " columns " of the kind corresponding to interval insulant m2.That is, to the product P shown in Fig. 3, can store and represent X-direction: 2, Y direction: the information of 1, to the product P shown in Fig. 8, store and represent X-direction: 2, Y direction: the information of 3.
In either case, by selecting in advance to be used for the interval insulant m2 as the product P of check object, the cut-off rule region da corresponding to interval insulant m2 can be automatically incorporated to.
(5-3) variation C
Relate to the number of the article G of X ray checking device 10 contained by product P of above-mentioned embodiment, carry out the judgement of product quality.Here, X ray checking device 10, except the number of article G, also can judge according to defect the good no judgement carrying out article G.Wherein, defect refers to that each article G does not have complete shape, but has the state of defect.Defect judges also to carry out according to process image.In addition, when carrying out defect and judging, consider the image of article G due to cut-off rule region da the situation of defect, preferably in advance setting has the threshold value of width.
And X ray checking device 10 also can judge the weight of each article G according to the shading value of radioscopic image, and carry out the defect judgement of each article G according to judged weight.
And X ray checking device 10, while carrying out above-mentioned inspection, also can carry out inspection of foreign substance.
Symbol description
10 X ray checking devices, 11 shielding boxs, 12 supply units, 13 x-ray irradiation devices (x-ray bombardment portion), 14 X ray line sensors (X ray test section), 14a x-ray detection device, 20 control device (inspection control part), 21 storage parts, 21a radioscopic image storage area, 21b binary image storage area, 21c columns information storage area, 21d processing image information storage area, 22 control parts, 22a radioscopic image generating unit, 22b inputs acceptance division, 22c rectangle generating unit, 22d Area generation portion, 22e number checks enforcement division, the good no detection unit of 22f, 30 displays, 70 distributor gears, 80 line supply units, 90 defective products exhausting lines, 100 check line (X-ray inspection system)
At first technical literature
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2002-228761 publication
Claims (8)
1. an X ray checking device, for checking the object product of the multiple article comprising wrappage and be arranged side by side by interval insulant in the inside of described wrappage, described X ray checking device comprises:
X-ray bombardment portion, to described object product X-ray irradiation;
X ray test section, detects through X ray, should be through the described X ray of described object product through X ray; And
Check control part, based on the described quantity through article multiple described in X-ray examination,
Described inspection control part has:
Radioscopic image generating unit, generates radioscopic image based on described through X ray;
Rectangle generating unit, generates the rectangle comprising in described radioscopic image the described multiple article shown;
Area generation portion, the inside of information according to the rules to described rectangle is split, and generates cut-off rule region and multiple zonule in the inside of described rectangle; And
Number checks enforcement division, is incorporated to described cut-off rule region, identifies each in the described multiple article contained by described radioscopic image, carry out the number inspection of described multiple article in described radioscopic image.
2. X ray checking device according to claim 1, wherein,
Described number checks that enforcement division is based on the described radioscopic image being incorporated to described cut-off rule region, identifies described multiple article profile separately, carries out the number inspection of described multiple article.
3. X ray checking device according to claim 1 and 2, wherein,
Described number checks that enforcement division generates the image remove described cut-off rule region from described radioscopic image after, namely processes image, and based on the image of the described multiple article contained by described process image, carries out the number inspection of described multiple article.
4. X ray checking device according to claim 1 and 2, wherein,
Described number check enforcement division based on described multiple zonule separately in whether there are described multiple article, carry out the number inspection of described multiple article.
5. X ray checking device according to any one of claim 1 to 4, wherein,
Described inspection control part also has and columns information storage part, described and columns information storage part store relevant at least one party in the line number that described multiple article are arranged side by side and columns as described in the also column number information of information that specifies,
Described Area generation portion, based on described and column number information, generates described multiple zonule and described cut-off rule region in the inside of described rectangle.
6. X ray checking device according to any one of claim 1 to 5, wherein,
Described cut-off rule region is the rectilinear region of the inside of crossing described rectangle.
7. X ray checking device according to any one of claim 1 to 6, wherein,
Described inspection control part also has input acceptance division, and described input acceptance division receives the input of the information of described regulation,
The information of the described regulation that described Area generation portion receives based on described input acceptance division, generates described multiple zonule and described cut-off rule region in the inside of described rectangle.
8. X ray checking device according to claim 5, wherein,
Described and columns information storage part stores the described line number corresponding with described interval insulant and described columns.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012268110A JP5864404B2 (en) | 2012-12-07 | 2012-12-07 | X-ray inspection equipment |
| JP2012-268110 | 2012-12-07 | ||
| PCT/JP2013/081604 WO2014087862A1 (en) | 2012-12-07 | 2013-11-25 | X-ray inspection device |
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| Publication Number | Publication Date |
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| CN104781656A true CN104781656A (en) | 2015-07-15 |
| CN104781656B CN104781656B (en) | 2016-08-31 |
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| JP (1) | JP5864404B2 (en) |
| CN (1) | CN104781656B (en) |
| WO (1) | WO2014087862A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108120728A (en) * | 2016-11-29 | 2018-06-05 | 株式会社岛津制作所 | The X ray checking device of battery |
| CN113740365A (en) * | 2020-05-15 | 2021-12-03 | 东芝It·控制系统株式会社 | Nondestructive inspection device |
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| WO2016117372A1 (en) * | 2015-01-20 | 2016-07-28 | 株式会社イシダ | Examination device |
| JP6512035B2 (en) * | 2015-08-28 | 2019-05-15 | 日立金属株式会社 | Automatic inspection method and automatic inspection apparatus |
| JP6539893B1 (en) * | 2018-01-26 | 2019-07-10 | 株式会社 システムスクエア | Inspection line |
| CN116990874A (en) * | 2021-06-09 | 2023-11-03 | 同方威视技术股份有限公司 | Security data association method and device and X-ray security system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104781656B (en) | 2016-08-31 |
| WO2014087862A1 (en) | 2014-06-12 |
| JP2014115138A (en) | 2014-06-26 |
| JP5864404B2 (en) | 2016-02-17 |
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