JP4128572B2 - X-ray inspection method, system and apparatus - Google Patents

Description

  The present invention irradiates an object to be inspected during transport with X-rays, and based on the X-ray transmission amount of the object to be inspected, the presence or absence of a foreign object in the object to be inspected or a component to be inspected or missing X-ray inspection method, system and apparatus for performing inspections such as determining the presence or absence of abnormalities (for example, cracks, missing parts, deformations, alterations, etc.) of inspection objects, in particular, inspection data of inspected products can be accumulated and extracted. The present invention relates to an X-ray inspection method, system and apparatus.

  In this type of X-ray inspection system and method, the X-rays are transmitted through the entire inspection object while conveying the inspection object, thereby grasping the difference in the X-ray absorption amount of each part of the inspection object. It is known to perform a state inspection of an inspection object, for example, a state inspection such as determining the presence or absence of foreign matter in the inspection object, and a density corresponding to the X-ray transmission amount for each relative position of the inspection object Many display X-ray images.

  Recently, there has been an increasing demand for improving the quality of distribution products to protect consumers. For example, the enhancement of a food hygiene management system conforming to HACCP (Hazard Analysis Critical Control Point) is highly advanced. As well as being required, ensuring traceability for each product is also required.

In response to such demands, the conventional X-ray inspection method and system, for example, allow X-ray images to be stored in a storage memory outside the X-ray inspection apparatus, and bar code information on the product to be inspected at a later inquiry. The X-ray image of the product is extracted based on the data and used as inspection data at the time of product inspection (see, for example, Patent Document 1).
In this case, a barcode is previously added to the packaging material of the product to be inspected, and the X-ray image inspection data is accumulated by optically reading the barcode as identification information during the X-ray foreign matter inspection.

JP 2002-28821 A

  However, in the conventional X-ray inspection system and the X-ray inspection method described above, the barcode is used as the identifier information of the inspection object, and the inspection data is managed based on the optical reading information of the barcode. As a result, barcodes are difficult to read due to external light or deformation of the packaging material.Especially when barcodes are printed on packaging bags, bar codes are read incorrectly even though foreign matter inspection has been completed successfully. Further, there is a problem that the product is sorted and discharged due to the inability to read and the manufacturing yield is lowered.

  In addition, if the print quality of the barcode (including the number written together with it) has deteriorated when the product reaches the end consumer or end user, the barcode may be misread or unreadable. In some cases, retrospective inspection data corresponding to inspected products was lost.

  The present invention has been made in view of the problems of such a conventional X-ray inspection apparatus, realizes an X-ray inspection method capable of reliably extracting accumulated inspection data, and has excellent traceability. An object is to provide a line inspection system and an X-ray inspection apparatus.

The present invention also ( 1 ) inspects the state of the inspection object based on the X-ray transmission amount of each part of the inspection object wrapped in the packaging material or the packaging container, and the concentration corresponding to the X-ray transmission amount. An X-ray inspection system for generating an X-ray image of each of the inspected objects with unique serial number information consisting of visually readable and readable characters or symbols that are identifiable on the X-ray image An identification information adding device to be added to a material or the packaging container, and whether or not foreign matter is mixed in the inspection object by irradiating the inspection object with X-rays and detecting the X-ray transmission amount of each part of the inspection object And an X-ray inspection apparatus that includes the display content of the serial number information and generates one X-ray image for one inspection object together with the determination result of the presence or absence of the foreign matter. It is a feature.

  With this configuration, appearance identification, that is, visible identifier information is added to each inspection object, and this identifier information is displayed as an identifier on the X-ray image. Therefore, it is possible to refer to the X-ray image of the object to be inspected simultaneously with the X-rays under the same condition and the identifier information at the same time. Therefore, it is possible to reliably prevent the retroactive inspection data corresponding to the inspected product from being lost.

In the X-ray inspection system of the present invention, ( 2 ) the X-ray inspection apparatus irradiates each inspection object to which the unique serial number information is added with X-rays, and within a predetermined determination region of the inspection object On the basis of the X-ray transmission amount of each part transmitted through the inspection object, while determining whether or not foreign matter is mixed in the inspection object, the X-ray transmission amount of each part transmitted outside the predetermined determination region of the inspection object, It is preferable to generate a display content portion of the serial number information in the X-ray image.

  With this configuration, it is possible to generate an image of identifier information that does not affect the inspection data of the inspection object by using an area that is masked outside the determination area in normal X-ray inspection. .

  According to the present invention, appearance identification, that is, visible identifier information is added to each inspection object, and this identifier information is projected as an identifier on the X-ray image. Therefore, an X-ray image of the inspection object is displayed. As an integral part of the identifier information imaged simultaneously with X-rays under the same conditions, the inspection data of the object to be inspected can be reliably extracted from the identifier information, and the retroactiveness can be reliably prevented from being interrupted. As a result, an X-ray inspection method capable of reliably extracting the accumulated inspection data can be realized, and an X-ray inspection system and an X-ray inspection apparatus excellent in traceability can be provided.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[First embodiment]
1 to 5 are views showing a first embodiment according to an X-ray inspection system and an X-ray inspection apparatus of the present invention.
First, the configuration will be described.

  As shown in FIGS. 1 and 2, the X-ray inspection system 1 of the present embodiment includes an X-ray inspection apparatus 10, and the X-ray inspection apparatus 10 transports an inspection object W and an endless transport belt 11. It has. The inspection object W is, for example, a specific product wrapped in a packaging material or a packaging container having a metal-based coating film part or a label part. Further, the transport belt 11 is driven at a predetermined speed by a transport drive motor (not shown), and transports the inspection object W from the upstream side to the downstream side through a predetermined inspection region in the X-ray inspection apparatus 10. Yes.

  On the other hand, a stamping machine 5 for marking the inspection object W is arranged on the upstream side (left side in FIG. 1) of the conveyor belt 11 or in the vicinity of the upstream conveyor belt. This marking machine 5 is, for example, an identification information adding means for sequentially adding a serial number as visible identifier information for each inspection object W or a plurality of identification information corresponding to each inspection object W while changing them under a predetermined condition. And it has a built-in operation program.

  The stamping by the stamping machine 5 is a process for locally crushing the metal film on a label or packaging material having a metal film attached to the inspection object W, for example. Visible identifier information added to the inspection object W by this marking is information unique to the inspection object W such as a serial number, and the X-ray transmittance is partially different from the surrounding area of the inspection object W. Are formed so as to produce a significant difference (a difference that is significant to the extent that it is projected on an X-ray image).

This identifier information is, or may be in characters and symbols, and the like. In addition, the identifier information referred to here is a paint having a different X-ray absorption rate from other parts, such as a paint having a higher X-ray absorption rate (difficult to transmit X-rays) than other packaging material parts. It may be engraved with etc. The identifier information may be a metal film or label formed with a through hole, a slit, or the like in a predetermined shape or pattern to form a specific shape high X-ray transmittance pattern or character, etc. The material W or the thick material constituting a part of the packaging material may have a concavity and convexity that gives an effective difference in the X-ray transmittance by conspicuous concavity and convexity. A combination may be used.

  As shown in FIG. 2, in the inspection area on the downstream side of the stamping machine 5, when the inspection object W enters the inspection area, the inspection detection sensor 13 including, for example, a light projecting / receiving device detects the inspection object W. The X-ray source 14 (X-ray irradiating means) for irradiating X-rays downward in FIG. 1 toward the object W to be inspected and the object W to be inspected are disposed below the upper running surface of the conveyor belt 11. An X-ray line sensor 15 for measuring the X-ray transmission amount of each part is provided. Further, a sorter 17 capable of selectively distributing and discharging the inspection object W on the transport belt 11 to the outside of the transport path is installed downstream of the inspection area.

  The X-ray source 14 is an X-ray tube that generates X-rays by colliding a thermoelectron from a cathode filament with an anode target by a high voltage between the cathode and the anode, for example. The sensor 15 is irradiated with a substantially triangular screen by a slit (not shown).

  The X-ray line sensor 15 is configured to perform X-ray detection at a predetermined resolution by arranging, for example, a plurality of X-ray detection elements in the width direction of the conveyor belt 11 and outputs a detection signal having a predetermined number of bits that can be image-processed. It is designed to output.

  The operation of the marking machine 5, the conveyor belt 11, the approach detection sensor 13, the X-ray source 14, the X-ray line sensor 15 and the sorting machine 17 is controlled by a control unit 20. The inspection of the state of the inspection object W, for example, inspection for determining the presence or absence of foreign matter in the inspection object W (for example, a metal having a different X-ray absorption rate from other parts in the inspection object). In addition to the execution, the sorting machine 17 is caused to execute the discharge operation of the inspected object W determined as having foreign matter according to the inspection result. In the case of shortage detection rather than foreign matter detection, the presence or absence of a specific component that is not a foreign matter but has a different X-ray absorption rate from other parts in the inspection subject is detected. When detecting abnormalities such as cracks, missing parts, deformations, alterations, etc., the cracks, missing parts, etc. having different X-ray absorption rates from other parts in the inspection object are detected.

  The control unit 20 includes, for example, a computer configuration having a CPU, a ROM, a RAM, and an I / O interface, an auxiliary storage device, an image processor, a timer, a video memory, and the like, and is stored in the ROM or the like. In accordance with the control program, the CPU executes predetermined arithmetic processing while exchanging data with the RAM or the like, thereby controlling the conveyance and the X-ray detection system, as well as generating an image and creating a storage information file, which will be described later. Etc. can be realized.

  When the inspection object W on the conveyor belt 11 passes through the inspection area, the X-ray source 14 is within the inspection area and covers the entire width (width) direction of the conveyor belt 11 under the control of the control unit 20. The X-ray line sensor 15 detects the X-ray transmission amount of the inspection object W at a predetermined position in the transport direction. Further, with respect to the conveyance direction, the X-ray transmission amount of the object W is sequentially sampled at a sampling pitch corresponding to the X-ray dose sampling pitch on the element row line of the X-ray line sensor 15. A conveyance speed is set, and X-ray transmission amount detection signals from a plurality of detection elements of the X-ray line sensor 15 are accumulated and stored as density data over the entire conveyance direction of the inspection object W, so that the source of the X-ray image is obtained. Data can be acquired.

  As shown in FIG. 3, the control unit 20 includes a time information generation unit 21 a, and whenever an inspection object W is detected by the intrusion detection sensor 13, this is used as a trigger for conveyance, foreign object determination, and image generation. The X-ray transmission amount data for the entire inspection object W is stored and held by sequentially accumulating the X-ray transmission amount line detection signal from the conveyance / detection control circuit 21 for executing the processing and the like and the X-ray line sensor 15. A transmission amount data memory 22, a state determination unit 23 (state determination unit) for determining the presence or absence of foreign matter in the inspection object W based on data stored in the transmission amount data memory 22, and a state by the state determination unit 23 X-rays based on the incidental information generation unit 24 (accompanying information generation means) that generates incidental information (inspection value information) such as determination conditions and determination results, and data stored in the transmission amount data memory 22 And an X-ray image generation unit 25 that generates an X-ray image having a density distribution corresponding to the excessive amount. Further, the X-ray image generated by the X-ray image generation unit 25 and the determination result by the state determination unit 23 And a storage information file creation for creating a storage information file in a predetermined format in which inspection value information is added to the X-ray image with a file name corresponding to the inspection time, based on the inspection value information generated by the accompanying information generation unit 24 Part 26 is provided.

  Here, the state determination unit 23 includes a determination program for performing a logarithmic conversion or differentiation process to extract a steep change in the amount of X-ray absorption by the substance and determining a foreign substance. Further, the X-ray image generation unit 25 has an image processor, for example. In addition, the X-ray image generation unit 25 and the accumulated information file creation unit 26 generate a first X-ray image that is an X-ray image of the inspection object W, and display the identifier information that is captured simultaneously with the inspection object W. X-ray image generation means for generating a second X-ray image showing the contents inseparably from the first X-ray image, and in this embodiment, a program for performing image processing that makes it easy to refer to the identifier information And consists of memory. The time information generation unit 21a of the transport / detection control circuit 21 stores information for specifying the time (for example, the time until the second, such as 14:15:16 on December 13, 2005) in the control unit 20. Can be output to other functional units.

  The control unit 20 can also display and output the X-ray image generated by the X-ray image generation unit 25, the determination result by the state determination unit 23, and the inspection value information generated by the accompanying information generation unit 24, respectively. The storage information file created by the display unit 27 and the storage information file creation unit 26 is temporarily stored in a memory or a hard disk so that it can be read by designating time information, and in a predetermined format in response to an external request. And a stored information output unit 28 that can output from a data communication port (not shown).

  The X-ray inspection apparatus 10 is further provided with a recording device 40 that can store inspection data. The recording device 40 includes an information input storage unit 41 that inputs and stores a storage information file every predetermined time from the storage information output unit 28, and an inspection time that specifies the time information based on the unique identification information of the object W to be inspected. An identification unit 42, an X-ray image extraction unit 46 that extracts an X-ray image group corresponding to an examination time identified from a plurality of stored information files that have been captured based on the time information, and a plurality of stored storage information And an accompanying information extracting unit 47 for extracting accompanying information corresponding to the specified inspection time from the file, and extracting the specified identification information of the inspection object W from the external computer 50 to the inspection time specifying unit 42 By sending the command, the stored information frame corresponding to the unique identification information of the inspection object W from the stored information in the information input storing unit 41 via the X-ray image extracting unit 46 and the accompanying information extracting unit 47 is sent. Yl or stored information files for each predetermined time including that it is to be extracted.

  Here, the information input storage unit 41 has a known storage device such as a large-capacity hard disk and / or a disk array device, and stores the stored information file group including the X-ray image and the accompanying information in the device at the inspection time. And an accumulation processing program for accumulating and storing the information together with time information for specifying. Although not shown in detail, the information input storage unit 41 further includes a disk drive that can store and record stored information on a removable disk-shaped recording medium such as a DVD or other storage medium.

  The inspection time specifying unit 42 includes an inspection time specifying program and a table memory, and a data lookup table (hereinafter referred to as a time information table) for specifying the inspection time information based on the unique identification information of the inspection object W. It has a memory to be stored and held by prior input and an inspection specific program. When the specific identification information of the object to be inspected W is designated and inputted, the inspection time information and the extraction command corresponding to the designated input are output to the X-ray image extraction unit 46 and the accompanying information extraction unit 47.

  The X-ray image extracting unit 46 and the accompanying information extracting unit 47 extract an X-ray image and accompanying information corresponding to the examination time information specified by the examination time specifying unit 42. Then, the extracted X-ray image and accompanying information are taken into the computer 50 in the order of inspection, and are displayed on the screen, for example, by the display 51.

  Further, the recording device 40 groups the inspection images for the plurality of inspection objects W as inspection data groups for each predetermined time based on the inspection time information, and the inspection images of the grouped inspection objects W are grouped. And identifying between groups based on examination time information corresponding to unique identification information such as serial numbers, and having specific identification information such as specific serial numbers while referring to a plurality of X-ray images and associated information of the corresponding group An image of the inspection object W can be visually selected and extracted.

  As schematically shown in FIG. 5A, the inspection object W includes an X-ray transmission region (hereinafter referred to as a determination region) Wa that contributes to a state determination based on an X-ray transmission amount, and a region outside the determination region Wa. Wb and a mask area (for example, an area that is not used for state determination because the object to be inspected does not exist or only corresponds to a packaging material or a container), and the images included in each accumulated information file are For example, as shown in FIG. 5B, the image portion (W in the figure) of the inspection object W and the identifier information SC (enlarged relative to the image portion of the inspection object may be enlarged or enlarged. The inspection value information Pm obtained from the accompanying information is displayed on the same screen in an image or character format. The inspection value information includes, for example, the number of pixels (or pixel pitch), a threshold value used for foreign object determination, a determination value (OK / NG) indicating a determination result of the presence or absence of a foreign object, a measurement value displayed on the screen together with an X inspection image at the time of inspection, etc. All or any of the above is added.

  As shown in FIG. 1, the computer 50 is equipped with a keyboard 52. The computer 50 accesses the recording device 40 based on the operation of the keyboard 52, and stores the stored information file in the recording device 40. A serial number of the inspection object W (some wildcards may be included), or an inspection period, a product type of the inspection object W, etc. are specified and extracted, and the data is taken in Built in. The extracted information is attached with a time information table in which the serial number included in the extracted information is associated with the stamping time, and the search using the search code described above can be executed on the computer 50 side. Of course, such serial number and time information may be inserted into the extracted information file in the form of an image file name or the like.

  Next, an operation of the X-ray detection system having the above-described configuration and an embodiment of the X-ray inspection method of the present invention implemented thereby will be described.

  FIG. 5 is a flowchart showing a procedure for storing and retrieving examination data (X-ray image and accompanying information) in this embodiment. FIG. 5A shows a processing procedure for storing and recording examination results. FIG. (B) shows a procedure for extracting inspection data having specific identifier information from the stored and recorded information.

  In the accumulation recording process shown in FIG. 5A, first, identifier information such as a serial number, which is identifiable on the inspection object W and appears on the X-ray image on the upstream side of the conveyor belt 11, is displayed. Then, the latest stamped identifier information is written in the stamp time information table of the inspection time specifying unit 42 in association with the information of the time when the stamp was performed (step S12; identification information adding step) (step S12). ).

  Next, the apparatus waits for the conveyance time until the inspection object W reaches the inspection area (step S13). When the intrusion detection sensor 13 confirms that the inspection object W has entered the inspection area (step S14), X-rays are detected. Detection by the X-ray line sensor 15 of X-rays transmitted through the inspection object W by X-ray irradiation from the source 14 is started (detection process), and detection information of the X-ray transmission amount by the X-ray line sensor 15 in a predetermined period. Based on the above, the foreign matter mixing determination is performed in the state determination unit 23 (state determination step). At the same time, the X-ray image generation unit 25 generates the X-ray image Px including the identifier information as a visible image (X-ray image generation process), and the accompanying information generation unit 24 generates the accompanying information (step). S15). That is, the inspection for each inspection object W is executed.

At this time, in the state determination step, the presence / absence of foreign matter in the inspection object W is determined based on the X-ray transmission amount of each part transmitted through a predetermined determination area of the inspection object W. Further, in the X-ray image generation step, the display content portion SC of the identifier information in the X-ray image Px is generated based on the X-ray transmission amount of each part transmitted outside the predetermined determination area of the inspection object W.
In the identification information adding step, the identifier information is added to the labeled packaging material or packaging container including the metal film, but causes a significant difference in the amount of X-ray transmission in the inspection object W or the packaging container. Identification information consisting of the unevenness may be formed. Alternatively, identifier information including holes and slits can be formed in the inspection object W or its packaging container. Further, an X-ray image including the display content of the identifier information, that is, each stored information file is given a file name corresponding to examination time information that changes with time.

  Next, based on the X-ray image Px from the X-ray image generation unit 25 and the accompanying information from the accompanying information generation unit 24, the stored information file creation unit 26, for example, an image file of the X-ray image Px in JPEG format and the accompanying information. Is stored for each inspection of the inspection object W (step S16), temporarily stored in the storage information output unit 28, and then sequentially output to the recording device 40 side (step S16). S17).

On the other hand, each time the serial number is stamped on the inspection object W by the stamping machine 5, the above-described series of processing is sequentially executed in parallel, and inspection data for each inspection object W is stored in the information input of the recording device 40. The data are sequentially stored in the unit 41 (steps S11 to S17).
In this state, the inspection data (X-ray image and accompanying information) for each inspection object W accumulated in the recording device 40 is recorded and stored in association with the information on the time when identifier information such as a serial number is imprinted. ing.

  In the present embodiment, as described above, the X-ray image of the inspection object W and the identifier information of the inspection object W are visible in the image file for each inspection of the inspection object W in the recording device 40. Unlike conventional X-ray inspection systems and methods that use only bar code reading information as a reference, the stored information is retroactively detected by misreading the bar code because it is processed and stored as integrated information. There is no fear that will be lost.

  Further, the computer 50 can access the recording device 40, and the stored information in the recording device 40 can be output to the computer 50 as appropriate, and the data is stored in a removable disk-shaped recording medium such as a DVD or various known storages. Easily record and save on the device.

  Therefore, when there is an inquiry about the state at the time of inspection of the product at a later date, the information stored in the recording device 40 is recorded if it is relatively new, and is recorded and stored in another storage medium if it is old. The stored information can be easily searched and extracted.

  That is, as shown in the schematic procedure in FIG. 5B, when identifier information such as the serial number of the inquired product is input (step S21), by referring to the stamp time information table attached to the extracted information, Even in the case of the inspected object W manufactured in a large amount, a stored information file group in a certain time zone including the inspection data of the specific inspected object W is read out from the inspected object W (step S22). Displayed simultaneously or in a scrollable manner (step S23). Then, referring to the image group of the extracted information, a product having specific identifier information can be visually selected from the display image group, or a product having an overlooked appearance defect can be visually found ( Step S24).

By the way, while the inspection object W passes as a product to the final consumer or end user, the product is damaged during transportation or other handling, and the visible serial number of the inspection object W is somewhat difficult to read. There may be cases.
In this embodiment, even in such a case, based on the readable identifier information, the illegible part is searched and input as a wild card, for example (step S21), and the probability that the inspection data of the inspection object W is included. The stored information file group in the high time zone is read (step S22), the extracted image group is displayed (step S23), and the inspection object W is specified based on the visible information (step S24), and the inspection is performed. Data can be reliably extracted.

  Further, since inspection value information such as the determination threshold value of each inspection object W, the number of pixels of the X-ray image, and the determination result (OK / NG) is displayed together with the X-ray image including the identifier information, more detailed inspection is performed. Data can be extracted. Needless to say, the stored information file creation unit 26 may combine the inspection value information together with the X-ray image including the identifier information into a single image file by digital synthesis or the like.

  As described above, in the present embodiment, the appearance identification, that is, visible identifier information is added to each inspection object W, and this identifier information is displayed as an identifier on the X-ray image. The X-ray images that make up the W inspection data are inseparably integrated with the identifier information captured by X-rays at the same time under the same conditions, and it is ensured that the inspection data corresponding to the inspected product is not retroactively interrupted. It becomes possible to do. Moreover, if inspection value information is referred to together with the X-ray image, detailed inspection data can be referred to at the same time as the X-ray image.

  Further, by using an area masked outside the determination area in normal X-ray inspection, an image of identifier information that does not affect the inspection data of the inspection object can be generated, and the identifier information Can be visually confirmed by the final consumer.

  Further, if an X-ray image including the display contents of identifier information is given a file name corresponding to examination time information that changes with time, the X-ray image and the identifier information are integrated in the image file. Furthermore, the image file can be easily identified from the identification information unique to the inspection object only by grasping the correspondence between the identifier information of the inspection object and the time information. Verification can be ensured.

  In addition, even if the inspected object or the material of the packaging container is provided with an uneven shape or a hole or slit is drilled, a significant difference is caused in the amount of X-ray transmission, and the identifier information is changed to X-ray. It can be projected on the image.

[Second Embodiment]

  FIG. 6 is a diagram showing a second embodiment according to the X-ray inspection apparatus and the X-ray inspection system of the present invention.

  The X-ray inspection system of the present embodiment differs from the X-ray inspection system of the above-described embodiment in the processing contents of the storage information file creation unit 26 of the control unit 20 and the configuration of the storage information extraction unit of the recording device 40. Are different, and other main configurations and operations are the same as those of the above-described embodiment. Therefore, only the differences will be described in detail.

In the present embodiment, as shown in FIG. 6, the accumulated information file creation unit 26 of the control unit 20 further attaches to the X-ray image of the inspection object W in which the identifier information is integrated by the X-ray image generation unit 25. An image in which information is combined is created by, for example, digital synthesis processing.
Note that only the accompanying information is independent of the X-ray image (first X-ray image and second X-ray image) in which only the identifier information is integrated without combining the accompanying information such as the inspection value information. It can also be a file. In that case, the second information file is generated by the accompanying information generation unit 24, and the stored information file creation unit 26 performs adjustment of the file name for associating two image files in the same examination.

  The image files for each examination created by the accumulated information file creating unit 26 are sequentially accumulated in the information input accumulating unit 41 of the recording device 40, and in response to an extraction command from the computer 50 by specifying the unique identification information of the inspection object W. Then, it is extracted via the accumulated information extraction unit 28. In other words, according to the unique identification information, the examination time identification unit 42 identifies the examination time information corresponding to the designated unique identification information, and the accumulated information file group in this examination time zone is extracted.

  Also in the present embodiment, identifier information capable of identifying the appearance is added to each inspection object W, and this identifier information is displayed as an identifier on the X-ray image. Therefore, X constituting the inspection data of the inspection object W The line image has an inseparable relationship with the identifier information captured by X-rays simultaneously under the same conditions, and it is possible to reliably prevent the retroactive inspection data corresponding to the inspected product from being interrupted. The same effect as that of the embodiment can be obtained.

  As described above, according to the present invention, according to the present invention, identifier information that can be visually identified is added to each inspection object, and this identifier information is also displayed as an identifier on an X-ray image. The X-ray image of the object to be inspected is inseparable from the identifier information captured with X-rays simultaneously under the same conditions, so that the inspection data of the object to be inspected can be reliably extracted from the identifier information, and the retroactiveness is stopped. As a result, an X-ray inspection method capable of reliably extracting accumulated inspection data can be realized, and an X-ray inspection system and an X-ray inspection apparatus excellent in traceability can be provided. An X-ray inspection method, system, and method for irradiating X-rays toward an object being transported and inspecting the state of the object based on the amount of X-ray transmission through the object. Device, in particular, the inspection data of the inspected products, later, X-ray inspection method to be able to identify and extract from the stored information is useful for X-ray inspection systems and X-ray examination apparatus in general.

1 is a schematic configuration diagram of an X-ray inspection system according to a first embodiment of the present invention. 1 is a schematic front configuration diagram of an X-ray inspection system according to a first embodiment of the present invention. It is a block diagram of the control system of the X-ray inspection system which concerns on the 1st Embodiment of this invention. It is a figure explaining the accumulation | storage information in the X-ray inspection system which concerns on the 1st Embodiment of this invention, (a) is a schematic diagram of the to-be-inspected object, (b) is an X-ray which includes identifier information in part It is explanatory drawing of an image. FIG. 2 is a flowchart showing an information storage record and search / read processing procedure in the X-ray inspection system according to the first embodiment of the present invention, wherein (a) shows the storage record processing procedure, and (b) shows the stored information. The search and read processing procedures are respectively shown, and one embodiment of the X-ray inspection method of the present invention will be described. It is a block diagram of the control system which shows the X-ray inspection system which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

1 X-ray inspection system 5 Stamping machine (identifier information adding means, identifier information adding device)
10 X-ray Inspection Device 11 Conveyor Belt (Conveyor)
13 Intrusion detection sensor 14 X-ray source (X-ray irradiation means)
15 X-ray line sensor (X-ray detection means)
20 control unit 23 state determination unit (state determination means)
24 Accompanying information generation unit (accompanying information generating means)
25 X-ray image generator (X-ray image generator, inspection value image generator)
26 Accumulated information file creation unit (X-ray image generation means, inspection value image creation means)
27 Display section (display means)
28 Storage Information Output Unit 40 Recording Device 41 Information Input Storage Unit 42 Inspection Time Identification Unit 46 X-ray Image Extraction Unit 47 Accompanying Information Extraction Unit 50 Computer Px X-ray Image Wa Determination Area Wb Mask Area (Non-determination Area, Outside Determination Area) portion)

Claims (2)

X-ray for inspecting the state of the inspection object based on the X-ray transmission amount of each part of the inspection object wrapped in the packaging material or the packaging container and creating an X-ray image having a density corresponding to the X-ray transmission amount An inspection system,
Identification information addition device (5) for adding unique serial number information consisting of visually readable and legible characters or symbols that are identifiable on the X-ray image to the packaging material or the packaging container of each inspection object When,
Irradiating the inspection object with X-rays, detecting the X-ray transmission amount of each part of the inspection object to determine the presence or absence of foreign matter in the inspection object, including the display content of the serial number information, An X-ray inspection system comprising: an X-ray inspection apparatus (10) that generates one X-ray image for one inspection object together with a determination result of the presence or absence of foreign matter. The X-ray inspection apparatus irradiates each inspection object to which the unique serial number information is added with X-rays, and based on each part X-ray transmission amount transmitted through a predetermined determination region of the inspection object While determining the presence or absence of foreign matter in the inspection object, the display content of the serial number information in the X-ray image based on the X-ray transmission amount of each part transmitted outside the predetermined determination area of the inspection object X-ray inspection system according to claim 1, characterized in that to generate the partial (SC).

Images