JP2006208098A - Detector for x-ray foreign matter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detector for X-ray foreign matter for surely extracting accumulated inspection data, regardless of whether specific identification information is hard or easy to read. <P>SOLUTION: This X-ray foreign matter detector executes inspection for determining whether there are foreign matters exist in objects under inspection, based on the amount of X rays transmitted by respective parts of the objects, while preparing X-ray images of densities corresponding to the amount of X rays transmitted. This detector is provided with a composite inspection image preparation means 30 and a cumulative record means 33. At each inspection on the object, the preparation means 30 prepares a composite inspection image, obtained by combining an appearance visible image in inspection and an X-ray image into a single image file, the visible image, including visible specific identification information on each object and the X-ray image being prepared as the object, is inspected. The record means 33 accumulates/records the inspection images on the respective objects, obtained through compositing performed by the preparation means 30 under a file name that corresponds to the identification information on the object in an identifiable and readable manner. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention irradiates X-rays toward an object to be inspected during transportation, and determines an X-ray foreign object detection device that determines the presence or absence of foreign objects in the object to be inspected based on the X-ray transmission amount of the object to be inspected. The present invention relates to an X-ray foreign matter detection apparatus capable of accumulating and extracting inspection data of inspected products.

  In the X-ray foreign matter detection device, there is a device that determines the foreign matter by grasping the difference in X-ray absorption amount of each part of the inspection object by transmitting the X-ray through the entire inspection object while conveying the inspection object. Many of them are known and display an X-ray image having a density corresponding to an X-ray transmission amount for each relative position of an inspection object.

  Recently, there has been an increasing demand for quality improvement of distribution products for consumer protection. For example, the enhancement of 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 a request, in the conventional X-ray foreign object detection device, for example, an X-ray image can be stored in a storage memory outside the X-ray foreign object detection device, and bar code information on the product to be inspected at a later inquiry. In some cases, an X-ray image of the product is extracted based on the data and used as inspection data at the time of product inspection (for example, see Patent Document 1).

  In this apparatus, a barcode is added in advance to a packaging material of a product to be inspected, and the X-ray image inspection data is accumulated by reading the barcode as identification information at the time of X-ray foreign matter inspection.

JP 2002-28821 A

  However, in the conventional X-ray foreign matter detection apparatus, since the barcode is used as the unique identification information of the inspection object and the inspection data is managed based on the reading information of the barcode, the external light The barcode is difficult to read due to the deformation of the packaging material, especially when the barcode is printed on the packaging bag. There is a problem in that the production yield is reduced due to sorting and discharging.

  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 foreign matter detection device, and an object thereof is to provide an X-ray foreign matter detection device capable of reliably extracting accumulated examination data. To do.

  In order to achieve the above object, the present invention performs (1) an inspection for determining the presence or absence of foreign matter in the inspection object based on the X-ray transmission amount of each part of the inspection object, and supports the X-ray transmission amount An X-ray foreign matter detection apparatus for creating an X-ray image having a density to be detected, and for each inspection of the inspection object, an external appearance visible image at the time of inspection including unique identification information that can be visually checked for each inspection object, and the inspection object Composite inspection image creation means for creating a composite inspection image by combining the X-ray image created by inspection of an object into a single image file, and composite inspection of each object to be inspected synthesized by the composite inspection image creation means And an accumulation recording means for accumulating and recording the image so as to be identified and readable with a file name corresponding to the unique identification information of the object to be inspected.

  With this configuration, for each inspection of the inspection object, an external appearance visible image including unique identification information that can be visually checked for each inspection object and an X-ray image created by the inspection of the inspection object are a single image. A composite inspection image combined with the file is created, and the composite inspection image is stored and recorded so as to be identifiable and readable with a file name corresponding to the unique identification information of the inspection object. Therefore, even if it is difficult to read the unique identification information of the object to be inspected until it reaches the end user, the inspection data of the object to be inspected is stored from the stored record information based on the visible image including the unique identification information. It is possible to reliably identify and extract.

  Moreover, in the X-ray foreign material detection apparatus of this invention, (2) Inspection value image which produces | generates the visible inspection value image relevant to the inspection conditions or inspection result of each to-be-inspected object for every inspection of the to-be-inspected object A generating unit is provided, and for each object to be inspected, the visual appearance image and the X-ray image, and the inspection value image generated by the inspection value image generating unit are combined into a single combined inspection by the combined inspection image creating unit. More preferably, the image is combined with the image.

  With this configuration, inspection value information such as the determination threshold value of each object to be inspected, the number of pixels of the X-ray image, and the determination result (OK / NG) is displayed as a single image together with the appearance visible image and the X-ray image including the unique identification information. Combined to file. Therefore, more detailed inspection data can be extracted.

  In the X-ray foreign matter detection apparatus of the present invention, preferably, (3) the appearance visible image is an image obtained by photographing the appearance of at least a part of the inspection object including the visible unique identification information. In this way, by referring to the composite inspection image, the unique identification information of the object to be inspected can be surely visually grasped, and inspection data can be reliably extracted.

  (4) It is more preferable that the visible visible image is an image obtained by photographing the entire image of the inspection object. Thereby, the position of the unique identification information is slightly shifted, or simple and clear identification information that becomes unique identification information in combination with other information can be employed.

  Alternatively, (5) the appearance visible image includes a plurality of images including a photographed image of the inspection object from the viewing direction of the visible unique identification information and a photographed image from another direction different from the predetermined direction. It may be. According to this configuration, the detailed appearance visible image is included in the composite inspection image, and more detailed inspection data can be extracted.

  In the X-ray foreign object detection device of the present invention, (6) an identification information adding means for sequentially adding the visible unique identification information for each inspection object while changing the predetermined identification conditions is provided, and the composite inspection image is provided. Based on the time information when the identification information adding means adds the unique identification information to the object to be inspected by the creating means, the visible external image and the X-ray image at the time of inspection including the visible unique identification information are obtained. It is preferable that the composite inspection image is created by associating each inspection object.

  If comprised in this way, based on the time information which added the unique identification information to the to-be-inspected object, the synthetic | combination inspection image which linked | related the external appearance visible image and X-ray image containing unique identification information for every to-be-inspected object is produced. Therefore, even when a lot of inspection objects are inspected per unit time with a narrow conveyance pitch, a composite inspection image for each inspection object that reliably corresponds to the appearance visible image and the unique identification information is surely created. become.

  In the X-ray foreign matter detection apparatus of the present invention, further, (7) identification information adding means for sequentially adding the visible unique identification information for each inspection object while changing under a predetermined condition is provided, and the storage recording means However, based on time information or procedure information in which the unique identification information is added to the inspection object by the identification information adding means, the composite inspection images for a plurality of inspection objects are grouped, and the plurality of the grouped inspection objects are grouped. By identifying a composite inspection image of an inspection object between groups based on part or all of the visible unique identification information, and referring to a plurality of the combined inspection images of the corresponding group, specific specific identification information is obtained. You may enable it to specify the synthetic | combination test | inspection image which has.

  With this configuration, the combined inspection images for a plurality of objects to be inspected are grouped based on time information or procedure information for grouping. Therefore, if a group of composite inspection images can be identified based on the visual appearance information including visible unique identification information, the composite inspection images of a plurality of inspection objects of the group can be obtained based on the visual appearance information including unique identification information. By referencing, it is possible to extract a composite inspection image having specific unique identification information. That is, even when the unique identification information is difficult to read, a highly probable group is specified based on the unique identification information, and the individual visible information as well as the unique identification information is combined to have specific unique identification information. The inspection object can be easily specified.

  According to the present invention, the unique identification information of the inspection object is imaged, combined with the X-ray image, and stored and recorded, so that it is difficult to read the unique identification information of the inspection object before it reaches the end user. Even in such a case, based on the visible image including the unique identification information, the inspection data of the object to be inspected can be reliably identified from the accumulated record information, and the accumulated inspection data is related to the difficulty of reading the unique identification information. Therefore, it is possible to provide an X-ray foreign object detection device that can reliably extract.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[First embodiment]
1-5 is a figure which shows 1st Embodiment of the X-ray foreign material detection apparatus of this invention.
First, the configuration will be described.

  As shown in FIGS. 1 and 2, the X-ray foreign object detection device 10 of the present embodiment includes an endless transport belt 11 that transports the inspection object W, and the transport belt 11 is driven by a transport drive motor (not shown). Driven at a predetermined speed, the inspection object W is transported from the upstream side to the downstream side through a predetermined inspection area in the apparatus.

  On the upstream side (left side in FIG. 1) of the conveyor belt 11 or in the vicinity of the upstream conveyor belt, a printer 12 that prints a serial number, which is unique identification information visible on the object W to be conveyed. Is disposed downstream of the printer 12, and an intrusion detection sensor 13 comprising, for example, a light projecting / receiving device for detecting the inspection object W when the inspection object W enters the inspection area is provided. The visible unique identification information of the inspected object W is a kind of identifier that constitutes the unique identification information as a whole together with other characters and symbols that specify the expiration date, production date, lot, product type, production number, and the like. There may be.

  In the inspection region, an X-ray source 14 that irradiates X-rays downward in FIG. 1 toward the inspection object W, and each part of the inspection object W that is disposed below the upper running surface of the conveyor belt 11. An X-ray line sensor 15 that measures the amount of X-ray transmission and an imaging means such as a camera or an image sensor that captures an external visible image of the inspection object W, for example, a CCD camera 16 are provided. Further, a sorter 17 capable of selectively discharging the inspection object W on the transport belt 11 out of the transport path is installed on the downstream side of the inspection region.

  The appearance visible image is obtained by photographing the appearance of at least a part of the inspection object W so as to include the unique identification information from a predetermined direction in which the serial number or the unique identification information of the inspection object W including the serial number can be visually recognized. In this embodiment, the whole image of the inspection object W is taken from the predetermined direction. The appearance visible image may be a plurality of images including a captured image from the viewing direction of the visible unique identification information and a captured image from another direction different from the predetermined capturing direction. For example, the unique identification information may be composed of a plurality of identifiers distributed on the packaging material of the inspection object W.

  The operations of the conveyor belt 11, the printer 12, the approach detection sensor 13, the X-ray source 14, the X-ray line sensor 15, the CCD camera 16, and the sorter 17 are controlled by a control unit 20, respectively. The unit 20 determines the presence / absence of a foreign substance in the inspection object W based on the measurement information of the X-ray line sensor 15, and sorts the discharge operation of the inspection object W determined to have a foreign object according to the determination result. 17 is made to execute.

  The control unit 20 includes, for example, a microcomputer configuration having a CPU, a ROM, a RAM, and an I / O interface, an image processing processor, a timer, a video memory, an image mixture, and the like, and is stored in the ROM. According to the control program, the CPU executes predetermined arithmetic processing while exchanging data with the RAM so that functions such as inspection value image generation means, composite inspection image generation means, and storage recording means described later can be realized. It has become.

  More specifically, the X-ray source 14 detects X-rays in a range that covers the entire width (width) direction of the conveyor belt 11 near the intermediate position when the inspection object W on the conveyor belt 11 passes through the inspection region. Can be irradiated. 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 detects an X-ray transmission amount of the inspection object when the inspection object W on the transport belt 11 reaches the inspection region. The detection elements are arranged side by side in the width direction of the conveyor belt 11 to perform X-ray detection at a predetermined resolution, and a detection signal having a predetermined number of bits that can be processed is output. Further, with respect to the conveyance direction, the conveyance belt 11 is conveyed so that the X-ray transmission amount of the object to be inspected 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. The 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, so that the original data of the X-ray image is obtained. It can be acquired.

  The CCD camera 16 is installed at a position deviating from the direction (including the reflection direction) in which X-ray irradiation is directed, and the X-ray from the X-ray source 14 is the unique identification information portion of the inspection object W. The appearance of the inspection object W is imaged immediately before or immediately after the irradiation. As shown in FIG. 1, the CCD camera 16 may be installed such that the optical axis (line-of-sight axis) direction may be tilted in the transport direction, or may be tilted in the front-rear direction perpendicular to the transport direction. Further, depending on the printing position of the unique identification information and the transport posture of the inspection object W, the CCD camera 16 or an image sensor instead thereof can be installed in the horizontal direction, or can be arranged close to the X-ray line sensor 15. . Of course, in this case, in order to secure a light transmission path for imaging, the conveyance belt 11 may be a plurality of conveyance belts adjacent in the conveyance direction or the front-rear direction, or a light transmission portion (for example, flexible transparent Window portion).

  As shown in FIG. 3, the control unit 20 includes a conveyance / detection control circuit 21 that executes foreign object determination, image processing, and the like using the detected object W as a trigger each time the intrusion detection sensor 13 detects the X-ray. A transmission amount data memory 22 that can sequentially store X-ray transmission amount line detection signals from the line sensor 15 and store X-ray transmission amount data for the entire inspection object W; An X-ray image having a density distribution corresponding to the X-ray transmission amount is created based on the foreign substance determination unit 23 that determines the presence or absence of a foreign substance in the inspection object W based on the stored data and the stored data in the transmission amount data memory 22. The image processing unit 24 and the display unit 25 that can display and output the X-ray image created by the image processing unit 24 and the determination result of the foreign matter determination unit 23.

The foreign matter determination unit 23 performs, for example, logarithmic conversion and differentiation processing to extract a steep change in the amount of X-ray absorption by the substance, and determines the foreign matter. The image processing unit 24 includes, for example, an image processing processor.
The control unit 20 further includes an appearance visible image from the CCD camera 16 according to a detection signal from the approach detection sensor 13 so that an appearance visible image and an X-ray image of each inspection object W are input in synchronization. The synchronous input unit 31 that adjusts the input timing of the X-ray image from the image processing unit 24, and the externally visible image and the X-ray image that are input via the synchronous input unit 31 are digitally synthesized, and these are used as a plurality of component images. An image composition unit 32 that creates a single combined image, and an accumulation recording unit 33 that accumulates and records the composite image created by the image composition unit 32 are provided.

  Here, the synchronization input unit 31 and the image composition unit 32 use the detection signal from the approach detection sensor 13 as a trigger, and the appearance visible image from the CCD camera 16 and the X-ray from the image processing unit 24 for each inspection object W. The composite inspection image creation means 30 for creating the composite inspection image that combines the image and the single image file (mixture image file) of a predetermined format is configured. It is an accumulation recording means for accumulating and recording the synthesized inspection image of each inspected object W with a file name corresponding to the unique identification information of the inspection object W so as to be identified and readable.

  Specifically, the accumulation recording unit 33 records and saves the image file of the composite inspection image in an image file format such as JPEG suitable for storage in, for example, a removable disk-shaped recording medium, for example, in an internal hard disk drive. be able to. Of course, the storage / recording unit 33 can be equipped with a removable recording medium such as a DVD (Digital Versatile Disk), a semiconductor memory card or the like, and a disk drive or reader / writer capable of writing and reading. Of course, when a relatively large-capacity storage device is built in, a data communication port may be provided.

  The storage recording unit 33 is also configured to record and save a composite inspection image of a plurality of inspection objects W together with a time information table in which the serial number of the inspection object W is associated with the inspection time. A specific composite inspection image can be read out in order of inspection time or specified by inspection time, or a predetermined manufacturing period or lot unit specified by serial number, manufacturing time, etc. The stored information can be read according to the procedure information. The record information search code here is created by combining the manufacturing time and the serial number. For example, the composite inspection image of the 1234th inspection object W manufactured at 8:00 on December 1, 2005 is manufactured. Then, it is specified in the form of 051201081234.

  As shown in FIG. 4, the read composite inspection images M1 to M3 include information for visual file identification including, for example, a sequential heading number N corresponding to a serial number and a date / time display (which may include time) T. An image field F1, an inspection result image field F2 on the inspection result display screen including the X-ray image Px from the image processing unit 24, and an appearance image field F3 indicating the appearance visible image Pa of the inspection object W are configured. . Furthermore, the inspection result image column F2 includes a display portion F2a that displays inspection value information Pi at the time of inspection that created the X-ray image Px.

  The inspection value information Pi here is information related to the inspection condition or inspection result of each inspection object W, for example, the number of pixels (or pixel pitch), the threshold used for foreign object determination, and the determination result of the presence or absence of foreign objects. The judgment value to be expressed (OK / NG), all or any of the measurement values displayed on the screen together with the X inspection image at the time of inspection.

  That is, for each inspection of the inspection object W, the image processing unit 24 also serves as inspection value image generation means for inputting inspection value information from the foreign matter determination unit 23 and generating a visually inspectable inspection value image corresponding to the input information. Thus, an inspection result image in which the generated inspection value image Pi is incorporated into the inspection value information display unit F2a is created. Then, the composite inspection image creation means 30 uses the visual appearance image and the inspection result image (including images Pi and Px) generated by the image processing unit 24 for each inspection object W as a single composite inspection image. It is supposed to be combined with.

  On the other hand, the printer 12 cooperates with the control unit 20 and serial numbers as unique identification information that can be visually checked for each inspection object W or a plurality of identification information for each inspection object W (for example, expiration date, The identification information adding means sequentially adds the identifier (which constitutes the unique identification information by any one of a manufacturing number, lot number, manufacturing time, etc.) under a predetermined condition, and the composite inspection image creation means 30 Based on the time information when the unique identification information is added to the inspection object W by the identification information adding means, the above-described combining function is exhibited at a predetermined timing.

  Further, the storage and recording unit 33 keeps the composite inspection images for the plurality of inspection objects W based on the time information when the unique identification information is added to the inspection object W by the printer 12 as the identification information adding means. Grouped as a group of inspection data for each time zone of the time interval, and combined inspection images of the plurality of inspection objects W grouped together with unique identification information such as serial numbers (if the part cannot be read, information on the remaining part) ) Based on the group, and it is possible to visually select a composite inspection image having specific specific identification information with reference to a plurality of composite inspection images of the corresponding group, that is, finally, visible information It is displayed so that it can be judged visually based on the above.

  1 and 2, the storage / recording unit 33 includes a computer 50 having at least a display 51 and a keyboard 52 for data communication by a known network connection technology, for example, Ethernet (registered trademark) connection (which may be a wireless LAN or the like). The storage and recording unit 33 is accessed from the computer 50 based on the operation of the keyboard 52, and the storage information in the storage and recording unit 33 is stored as a serial number (partial wild card (a symbol indicating an arbitrary character). ), Or the inspection period and the type of the inspection object W can be specified and extracted, and the data can be output from the storage / recording unit 33 to the computer 50. The extracted information is attached with a print time information table in which the serial number included in the extracted information is associated with the print time, and the search by the search code described above is performed on the storage recording unit 33 side (apparatus body) and the computer. Each can be executed on the 50 side. Of course, such extracted serial number and time information may be included in the form of an image file name or the like.

  Next, the operation will be described.

  FIG. 5 is a flowchart showing a procedure for accumulating and retrieving composite inspection images in the present embodiment. FIG. 5A shows a processing procedure for accumulating and recording inspection results, and FIG. 5B shows accumulating and recording. The procedure for extracting test data having specific unique identification information from the obtained information is shown.

  First, in FIG. 5A, first, a serial number (or other identifier) is printed on the inspection object W on the upstream side of the conveyor belt 11, and the printing is performed in association with information on the time when this printing was performed. The latest serial number already written is written in the print time information table (step S11).

  Next, the apparatus waits for the conveyance time until the inspection object W reaches the inspection area (step S12), and when the entry detection sensor 13 confirms that the inspection object W has entered the inspection area (step S13), the CCD camera. 16, an appearance visible image Pa of the inspection object W is captured (step S14). At almost the same time, detection of the amount of X-ray transmission by the X-ray line sensor 15 is started, and the X-ray transmission by the X-ray line sensor 15 is started. Based on the amount detection information, the foreign matter determination unit 23 performs foreign matter mixing determination, and the image processing unit 24 creates an X-ray image Px, and further includes an inspection result image including cutting inspection value information Pi. Is created (step S15). That is, the inspection for each inspection object W is executed.

  The generated external appearance visible image Pa and inspection result image are taken into the image synthesizing unit 32 by the synchronization input unit 31 using the detection signal from the approach detection sensor 13 as a trigger, in synchronization with each other. The transfer timing is adjusted as described above, and then the image composition unit 32 creates a composite inspection image obtained by combining these images as a plurality of component images by digital composition (step S16).

Next, the composite inspection image is accumulated and recorded by the accumulation recording unit 33 in association with the printing time information of the serial number in the printer 12 (step S17).
On the other hand, each time the serial number is printed on the inspection object W by the printer 12, the above-described series of processing is sequentially executed in parallel, and the combined inspection images for each inspection object W are sequentially stored in the storage recording unit 33. (Steps S11 to S17).

  In this state, the composite inspection image for each inspection object W accumulated in the accumulation recording unit 33 is in a compressed image file format (for example, JPEG) suitable for storage in a removable recording medium, and is serial. Unique identification information such as a number is recorded and stored in association with information on the time of printing.

In the present embodiment, as described above, the composite recording image for each inspection object W is sequentially stored in the accumulation recording unit 33 even at a short time interval (for example, from a fraction of a second to a time interval of several seconds). Accurately accumulated. That is, since the barcode reading information is not used as a reference as in the prior art, the problem of misreading does not occur.
Further, it is possible to access the storage / recording unit 33 from an external computer 50 connected to the storage / recording unit 33 via a network, and to output the stored information in the storage / recording unit 33 to the computer 50 as appropriate. It can be recorded and stored in a removable disk-shaped recording medium or various known storage devices.

  Therefore, when there is an inquiry about the state at the time of inspection of the product at a later date, if it is relatively new, it is recorded and stored in another storage medium from the accumulated information in the accumulation recording unit 33 if it is older. It is possible to easily search and extract from the stored information.

  That is, as shown in the outline procedure in FIG. 5B, when the serial number of the inquired product is input (step S21), it is manufactured in large quantities by referring to the print time information table attached to the extracted information. The accumulated information of the composite inspection image group in a certain time zone including the inspection data of the specific inspection object W is read out from the inspection object W (step S22). Alternatively, it is displayed so as to be scrollable (step S23). Then, referring to the composite inspection image group, a product having a specific serial number or unique identification information can be selected from the display image group, or a product having an overlooked defect can be visually found. Yes (step S24). Therefore, the state at the time of inspection can be objectively evaluated by referring to the X-ray image, the visible visible image at the time of inspection, and the inspection value information.

By the way, while the inspection object W passes as a product to the end consumer or end user, the product is damaged during transportation or other handling, and the visible unique identification information of the inspection object W is slightly read. It can be difficult.
In this embodiment, even in such a case, based on the identifiable identification information that can be read, the unreadable portion is searched and input as a wild card, for example (step S21), and the inspection data of the inspection object W is included. The stored information of the composite inspection image group in the time zone with a high probability load is read (step S22), the composite inspection image group is displayed on the display unit 25 (step S23), and the inspection object W is specified based on the appearance visible image. By doing so (step S24), it becomes possible to extract the inspection data reliably.

  That is, based on the time information at which the unique identification information is added to the inspection object W, the accumulation recording unit 33 accumulates the combined inspection images for the plurality of inspection objects W, and stores the grouped inspection objects. Since the composite inspection image group of the inspection object W can be identified between the groups based on the search input corresponding to part or all of the visible unique identification information, it is easy to refer to the plurality of composite inspection image groups of the corresponding group. can do. Therefore, even when the unique identification information is difficult to read, a highly probable group is specified based on the unique identification information, and individual appearance visible information as well as unique identification information is combined to have specific unique identification information. The inspection object can be easily specified.

  Further, the 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 appearance visible image and the X-ray image including the unique identification information. Since this is combined, more detailed inspection data can be extracted.

  Furthermore, since the appearance visible image of the inspection object W is an image obtained by photographing at least a part of the inspection object W including unique identification information such as a serial number, the inspection object W can be obtained by referring to the composite inspection image. The unique identification information can be surely grasped visually, and inspection data can be surely extracted and easy.

  Further, in the present embodiment, based on time information or procedure information in which unique identification information is added to the object to be inspected W, a composite inspection in which an appearance visible image including unique identification information and an X-ray image are associated for each object to be inspected. Since the image is created, when the transport pitch is narrow and many inspection objects are inspected per unit time, for example, even when multiple inspection objects are inspected within the same time in seconds, the appearance A combined inspection image for each inspection object in which the visible image and the unique identification information correspond to each other reliably is created.

  In the present embodiment, since the appearance visible image of the inspection object W is an image obtained by photographing the entire image of the inspection object W, the position of the unique identification information is slightly shifted or in combination with other information. Simple and clear identification information that is unique identification information can be employed.

  In the above-described embodiment, the visible visible image of the inspection object W is a captured image of at least a part of the inspection object from a predetermined direction in which the unique identification information can be visually recognized. It is not limited, and a plurality of images including captured images from other directions different from the predetermined direction may be used. By doing so, for example, the identification information may be composed of a plurality of identifiers distributed in a distributed manner, and a more detailed appearance visible image is included in the composite inspection image, so that a more detailed inspection is possible. Data can be extracted.

  In the above-described embodiment, the combined inspection image is created by integrally combining the inspection value information Pi with the X-ray image Px and the appearance visible image Pa. However, the inspection value information Pi is exclusively selected and indexed by visual inspection. The inspection value information Pi is a data file separate from the combined inspection image obtained by combining the X-ray image Px and the appearance visible image Pa, and is combined with the unique identification information of the inspection object W. Management data associated with the inspection image can also be used, and even in this case, the effect of the present invention can be sufficiently expected.

  As described above, the present invention does not have a problem of misreading the unique identification information, and even if it is difficult to read the unique identification information that is visible to the inspected object before passing to the end user, the unique identification information is displayed. Based on the included visible image, the inspection data of the object to be inspected can be reliably identified from the stored record information, and there is an effect that it is possible to provide an X-ray foreign object detection device that can be extracted, An X-ray foreign object detection device that irradiates X-rays toward an object to be inspected and determines the presence or absence of foreign objects in the object to be inspected based on the X-ray transmission amount of the object to be inspected. This is useful for all X-ray foreign matter detection apparatuses that can specify and extract inspection data from stored information at a later date.

1 is a system configuration diagram including a schematic front view of an X-ray foreign substance detection device according to a first embodiment of the present invention. 1 is a system configuration diagram including a schematic plan view of a main part of an X-ray foreign object detection device according to a first embodiment of the present invention. It is a block diagram which shows schematic structure of the control unit of the X-ray foreign material detection apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing of the partial extraction image of the accumulation | storage information in the accumulation | storage recording part of the X-ray foreign material detection apparatus which concerns on the 1st Embodiment of this invention. FIG. 5 is a flowchart showing a composite inspection image accumulation recording and retrieval / readout processing procedure in the X-ray foreign object detection device according to the first embodiment of the present invention. FIG. b) shows a processing procedure for retrieving and reading from the stored information.

Explanation of symbols

10 X-ray foreign matter detection device 11 Conveying belt 12 Printer (identification information adding means)
13 Intrusion detection sensor 14 X-ray source (X-ray generation means)
15 X-ray line sensor (X-ray detection means)
16 CCD camera (imaging means of visible external image)
20 Control unit (identification information adding means)
22 Transmission amount data memory 23 Foreign matter determination unit 24 Image processing unit (X-ray image creation means, inspection value image creation means)
25 Display unit 30 Composite inspection image creation unit 31 Synchronous input unit 32 Image composition unit 33 Accumulation recording unit (accumulation recording unit)
50 External computer Px X-ray image Pa Appearance visible image Pi Inspection value information image

Claims (7)

Based on the X-ray transmission amount of each part of the inspection object (W), an inspection for determining the presence or absence of foreign matter in the inspection object is performed, and an X-ray image (Px) having a density corresponding to the X-ray transmission amount is obtained. An X-ray foreign object detection device to be created,
For each inspection of the inspection object, an external appearance visible image (Pa) including unique identification information that can be visually checked for each inspection object and the X-ray image created by the inspection of the inspection object are single. Synthetic inspection image creation means (30) for creating a composite inspection image (M1, M2, M3) combined with the image file;
An accumulation recording means (33) for accumulating and recording the composite inspection image of each object to be inspected synthesized by the composite inspection image creating means with a file name corresponding to the unique identification information of the object to be inspected and readable; An X-ray foreign matter detection apparatus comprising: For each inspection of the inspection object, an inspection value image generating means (24) for generating a visible inspection value image (Pi) related to the inspection condition or inspection result of each inspection object is provided,
For each inspection object, the appearance visible image and the X-ray image and the inspection value image generated by the inspection value image generation unit are combined into a single combined inspection image by the synthetic inspection image creation unit. The X-ray foreign object detection device according to claim 1, wherein   The X-ray foreign object detection device according to claim 1, wherein the visible external image is an image obtained by capturing an external appearance of at least a part of the inspection object including the visible unique identification information.   The X-ray foreign object detection device according to claim 3, wherein the visible external image is an image obtained by capturing an entire image of the inspection object.   The appearance visible image is a plurality of images including a photographed image of the inspection object from a viewing direction of the visible unique identification information and a photographed image from another direction different from the predetermined direction. The X-ray foreign material detection apparatus according to claim 3. An identification information adding means (12) for sequentially adding the visible unique identification information for each object to be inspected under predetermined conditions is provided,
Based on the time information when the identification information adding means adds the unique identification information to the object to be inspected by the synthetic inspection image creating means, the appearance visible image at the time of inspection including the visible unique identification information and the X 6. The X-ray foreign object detection apparatus according to claim 1, wherein the composite inspection image is created by associating a line image with each inspection object. Providing identification information adding means for sequentially adding the visible unique identification information for each object to be inspected under a predetermined condition;
The accumulation recording means groups the composite inspection images for a plurality of inspection objects based on time information or procedure information obtained by adding the unique identification information to the inspection objects by the identification information adding means, and the grouping is performed. Identifying a plurality of inspected composite inspection images between groups based on a part or all of the visible unique identification information, and referring to a plurality of the composite inspection images of the corresponding group The X-ray foreign object detection device according to claim 1, wherein a composite inspection image having unique identification information can be specified.

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