JP5357507B2 - Test piece and foreign object detection device - Google Patents

Description

  The present invention relates to a foreign object detection device and a test piece that detect foreign substances mixed in an object to be inspected, such as raw meat, fish, processed food, and medicine, and in particular, an operation for confirming detection accuracy using a test piece. The present invention relates to a foreign object detection device and a test piece that perform confirmation processing.

  In general, in a production line for raw meat, fish, processed food, medicine, etc., an X-ray foreign matter detection device or a metal detection device is used as a foreign matter detection device in order to detect foreign matter mixed in an inspection object (product). ing.

  The X-ray foreign matter detection apparatus irradiates an inspection object conveyed on a conveyance line with X-rays, and the foreign matter in the inspection object is determined from the amount of X-rays transmitted through the inspection object in accordance with the X-ray irradiation. Whether or not is mixed is detected.

  In addition, the metal detection device generates an alternating magnetic field in the conveyance line, passes the inspection object of each type through the alternating magnetic field, and checks whether the metal is mixed from the detection output when the magnetic field is passed. Or a magnetic field in the inspection object is magnetized by generating a direct current magnetic field for each type of inspection object, and foreign matter is mixed in the inspection object by detecting the magnetism with a magnetic sensor. It is detected whether or not.

Conventionally, as this kind of foreign matter detection device, an operation confirmation process is performed in which the device is set to an operation confirmation mode before and after the operation of the production line and the detection accuracy is confirmed using a test piece in which a foreign matter piece for testing is stored. Is known (see, for example, Patent Document 1).
JP-A-9-72885

  However, in the conventional foreign object detection device, there is a risk that the operation confirmation may be performed by using a test piece selected from a plurality of types and sizes of test pieces. Therefore, the result of the operation confirmation is completely reliable. There was a problem that could not be done.

  In addition, information such as the type and size of the test piece to be used is input to the foreign object detection device in advance as a specified test piece, and the specified test piece is based on the detection value of the foreign object detection means using X-rays or a magnetic field. Even if it is detected as a test piece and not as a foreign object when it is detected, it may not be known whether the specified test piece has been used or a test piece other than the specified one. May be misrecognized as a prescribed test piece, and the result of the operation check cannot be completely trusted.

  In addition, when an RF tag is attached to a test piece to recognize that it is a prescribed test piece, the RF tag, which is an electronic circuit, affects the X-rays and magnetic field, so accurate operation confirmation is required. There was a problem that the result of the operation check could not be completely trusted.

  Therefore, the present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a test piece and a foreign object detection device that can improve the reliability of operation confirmation.

  A test piece according to the present invention includes a test foreign material piece and a storage member that stores the test foreign material piece, and the storage member optically includes at least identification information for identifying the test foreign material piece. It has an information recording part in which readable information is recorded.

  With this configuration, the foreign object detection apparatus using the test piece reads the identification information recorded in the information recording unit of the test piece by the optical passage sensor that is normally provided in the foreign object detection apparatus, and uses the read identification information. Because it is possible to identify the test foreign substance pieces stored in the test piece, it is possible to prevent misidentification between the test piece and the product, and whether or not a predetermined test piece is used from various test pieces. This makes it possible to improve the reliability of the operation confirmation.

  The test piece according to the present invention includes a connection member connected to the storage member, and the information recording unit is provided on the connection member.

  With this configuration, even when the information recording unit is not provided in the storage member or when it is difficult to provide the information recording unit, the test piece can be obtained by connecting the connecting member having the information recording unit to the storage member. It is possible to identify the test foreign object pieces stored in the container.

  The test piece according to the present invention is characterized in that the information recording unit includes a transmission part that transmits light and a non-transmission part that does not transmit light.

  With this configuration, the transmissive portion and the non-transmissive portion can be created by a simple method such as notching, painting, and pasting, and there is a risk of malfunction than the configuration in which information is electrically recorded and read. Since there are few, the manufacturing cost is low and the test piece which has durability can be provided.

  The test piece according to the present invention is characterized in that a transmissive portion and a non-transmissive portion corresponding to the identification information are formed larger than a transmissive portion and a non-transmissive portion corresponding to information other than the identification information.

  With this configuration, the transmissive part and the non-transmissive part corresponding to the identification information are optically reliably read.

  The test piece according to the present invention is characterized in that the storage member is made of a resin material having a hollow structure.

  With this configuration, even when a test piece is used in a foreign matter detection device that detects foreign matter using X-rays, the housing member made of a resin material having a hollow structure transmits X-rays and affects the detection of test foreign matter pieces. Therefore, it is possible to confirm the operation with high accuracy.

  The foreign matter detection device according to the present invention is a foreign matter detection device that detects foreign matter mixed in an object to be transported on a transport line, wherein the reading means for optically reading the identification information from the test piece; An identification means for identifying the test piece based on the identification information read by the reading means, and an informing means for informing the identification result of the identification means are provided.

  With this configuration, the optical passage sensor normally provided in the foreign object detection device is used as a reading unit, the identification information is read from the test piece, and the result of identifying the test piece based on the identification information is notified. By referring, it is possible to know whether there is a misidentification between the test piece and the product and whether or not a predetermined test piece is used from various test pieces, and the reliability of the operation check can be improved. .

  The present invention can provide a test piece and a foreign object detection device that can accurately perform an operation check using the test piece.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, the configuration will be described.

  FIG. 1 is a block diagram showing a configuration of a foreign object detection device according to an embodiment of the present invention. FIG. 2 is a block diagram showing an example in which the detection unit of the foreign object detection device according to the embodiment of the present invention is configured as a metal detection unit. FIG. 3 is a block diagram showing an example in which the detection unit of the foreign object detection apparatus according to the embodiment of the present invention is configured as an X-ray detection unit. FIG. 4 (a) is a top view showing the conveyance unit of the foreign object detection apparatus according to the embodiment of the present invention, and FIGS. 4 (b) and 4 (c) are display examples of the display unit. .

  As shown in FIG. 1, the foreign object detection device 1 includes a transport unit 2, a detection unit 3, a setting unit 4, a foreign object determination unit 5, an operation confirmation processing unit 6, and a display unit 7.

  The foreign object detection device 1 is incorporated in a production line (not shown) through which inspection objects such as raw meat, fish, processed food, and medicine are conveyed, and detects foreign substances mixed in the inspection object W. For example, it has a function (operation confirmation function) for confirming whether or not foreign object detection can be performed correctly using the test piece P having the configuration shown in FIG.

  The transport unit 2 sequentially transports the inspected objects W of the varieties set in advance by the setting unit 4 from various varieties such as raw meat, fish, processed food, and medicine. Consists of horizontally arranged belt conveyors. The transport unit 2 is driven by a drive motor (not shown), and transports the inspected object W in the direction of the arrow in FIG. 1 at a predetermined transport speed set in advance.

  The detection unit 3 outputs a detection signal according to the type and size of the foreign matter contained in the inspection object W and the test foreign matter piece 11 in the test piece P. The metal having the configuration shown in FIG. The detection unit 3B or the X-ray detection unit 3A having the configuration shown in FIG.

  The metal detection unit 3B shown in FIG. 2 includes a signal generator 31, a transmission coil 32, a magnetic field change detection unit 33 having two reception coils 33a and 33b, and a detection unit 34.

  The signal generator 31 outputs a signal having a predetermined frequency. The transmission coil 32 receives a signal from the signal generator 31 and generates an alternating magnetic field having a predetermined frequency on the inspection object W (or test piece P).

  The two receiving coils 33a and 33b are arranged along the conveyance direction of the inspection object W at positions where the equal amounts of alternating magnetic fields generated by the transmitting coil 32 are received, and are differentially connected to each other. The magnetic field change detection unit 33 generates a signal corresponding to a magnetic field change caused by an object passing through an alternating magnetic field.

  The detector 34 synchronously detects the output signal of the magnetic field change detector 33 with a signal having the same frequency as the signal generated by the signal generator 31.

  In the metal detector 3B having such a configuration, when the inspection object W is not present in the alternating magnetic field, the balanced state in which the amplitudes of the signals generated in the two receiving coils 33a and 33b are equal and the phases are inverted. Therefore, the amplitude of the signal becomes zero, and the output of the detection unit 34 becomes zero (detection output). On the other hand, when the inspection object W exists in an alternating magnetic field, two objects are affected by the influence of the inspection object W itself and the metal (or test piece P) mixed in the inspection object W. The balanced state of both signals generated in the receiving coils 33a and 33b is lost, and a signal whose amplitude and phase change with the movement of the inspection object W is output from the detection unit 34 (detection output).

  The metal detector 3B shown in FIG. 2 has the transmitting coil 32 arranged on one side with the conveying unit 2 interposed therebetween, and the two receiving coils 33a and 33b are arranged on the other side so as to face the transmitting coil 32. Although it has a so-called opposed arrangement configuration, it may have a coaxial arrangement configuration in which the transmission coil 32 and the reception coils 33a and 33b are arranged coaxially.

  On the other hand, the X-ray detector 3 </ b> A shown in FIG. 3 includes an X-ray generator 21 and an X-ray detector 22.

  The X-ray generator 21 is composed of a cylindrical X-ray tube provided inside a metallic box soaked in insulating oil, and irradiates the anode target with an electron beam from the cathode of the X-ray tube. X-rays are generated. The X-ray tube is arranged so that its longitudinal direction is orthogonal to the conveyance direction of the inspection object W. The X-rays generated by the X-ray tube are exposed to the lower X-ray detector 22 in the form of a substantially triangular X-ray through a slit along the longitudinal direction. It is like that.

  The X-ray detector 22 detects X-rays that pass through the inspection object W when the X-rays are exposed to the inspection object W, and according to the detected amount of X-ray transmission. An electrical signal is being output. The X-ray detector 22 includes, for example, a plurality of photodiodes arranged in a line in a direction orthogonal to the conveyance direction of the inspection object W conveyed on the belt conveyor constituting the conveyance unit 2, and on the photodiodes An arrayed line sensor including a provided scintillator is used.

  In the X-ray detection unit 3A having such a configuration, when X-rays are exposed to the inspection object W from the X-ray generator 21, X-rays transmitted through the inspection object W are detected by X-ray detection. It is received by the scintillator of the vessel 22 and converted into light. Further, the light converted by the scintillator is received by the photodiode of the X-ray detector 22 disposed below the scintillator. Each photodiode converts the received light into an electrical signal and outputs it (detection output).

  The setting unit 4 includes an operation for setting the type of the inspection object W to be conveyed by the conveyance unit 2 and an operation for inputting information on the test piece P used in the operation confirmation mode for confirming whether or not the apparatus operates correctly. This is for making various settings and instructions related to foreign object detection and operation confirmation processing of the inspection object W, and includes a plurality of keys and switches operated for setting and instructions. Note that when setting a specific test piece P (hereinafter referred to as a default test piece) as the test piece P used in the operation check mode, the default test piece is set by the setting unit 4. .

  The foreign matter determination unit 5 determines whether or not a foreign matter is included in the inspection object W based on the detection output (detection signal) from the detection unit 3 and displays the determination result on the display unit 7. It is supposed to let you.

  The operation confirmation processing unit 6 identifies the test piece P based on the test piece information (specifically, the test piece ID), and confirms whether the detection unit 3 operates correctly using the test piece P. The mode is executed, and the identification result and the determination result are displayed on the display unit 7. The test piece storage unit 6a, the test piece determination unit 6b, and the collation unit 6c are provided.

  The test piece storage unit 6a stores test piece information including a test piece ID that is identification information for identifying the test piece P being conveyed by the conveyance unit 2. The test piece information includes information on the test piece ID, type, and size, as well as detailed information on various test pieces P that can be used in the operation check mode. Note that the test piece storage unit 6a stores test piece information for each type of the inspection object W. Here, the test piece ID is, for example, information such as a number assigned to each test piece P for each individual or type of the test piece P. For example, “001”, “002” or “A” Information such as “,“ B ”. That is, the test piece ID is provided in the test piece P as will be described later, and is also stored in the test piece storage unit 6a. Here, the test piece information provided in the test piece P is basic information such as the test piece ID, type, size, parity, etc., as shown in FIG. 6A, and is stored in the test piece storage unit 6a. The test piece information is detailed information including not only the test piece ID, type, and size but also other information that can be used in the operation check mode.

  The test piece storage unit 6a stores correspondence information indicating a correspondence relationship between the type and size of the test piece P and the detection output to be output by the detection unit 3 according to these types. In the operation check mode, it is referred to when determining whether or not the detection unit 3 operates correctly.

  The test piece determination unit 6b determines whether the inspection object W is a product or a test piece P based on the presence or absence of the test piece ID with respect to the inspection object W sequentially conveyed during the foreign object inspection operation. The result is displayed on the display unit 7, and the operation mode is switched between the normal foreign object detection mode and the operation confirmation mode based on the determination result.

  Further, the test piece determination unit 6b uses the test piece P to determine whether or not the detection unit 3 operates correctly, and based on the test piece ID provided on the test piece P, the test piece P It is determined whether the prescribed test piece P to be used is predetermined through the setting unit 4 and the determination result is displayed on the display unit 7.

  Specifically, the test piece determination unit 6b reads the test piece information provided in the test piece P by the test piece information acquisition unit 8 and the collation unit 6c and executes the test piece information in the test piece information during the normal foreign object detection mode. When the test piece ID is verified and it is confirmed that the test piece P is transported, the operation check process using the test piece P is performed by switching the operation mode from the normal foreign object detection mode to the operation check mode. At the same time, the result of the operation check process and the read test piece information are displayed on the display unit 7. In the operation confirmation process, the detection unit 3 is correctly determined based on whether or not the detection output of the detection unit 3 matches the detection output corresponding to the type and size of the test piece P (or whether or not it is within an allowable range). It is determined whether or not to operate.

  Further, the test piece determination unit 6b extracts detailed test piece information having a test piece ID that matches the test piece ID included in the basic test piece information read from the test piece P from the test piece storage unit 6a. The information is displayed on the display unit 7 together with basic test piece information read from the test piece P.

  In addition, when the detailed test piece information corresponding to the basic test piece information acquired from the test piece P is not stored in the test piece storage unit 6a, the test piece determination unit 6b may acquire the basic information acquired from the test piece P. Only typical test piece information is displayed on the display unit 7.

  In addition, the collation unit 6c is a default test piece in which the test piece P used for the operation check process is set in advance by the setting unit 4 based on the test piece ID included in the basic test piece information read from the test piece P. Whether or not it matches with P is checked. The test piece determination unit 6b displays the collation result of the collation unit 6c on the display unit 7.

  The display unit 7 is configured by, for example, a liquid crystal display or the like, and is set by the setting unit 4 in addition to the set value when the setting unit 4 sets the type of the inspection object W and the setting value related to the switching of the operation mode. Various indications such as indicated values and various determination results are displayed, and the contents thereof are notified.

  For example, as shown in FIG. 4B, the display unit 7 executes the normal foreign object detection mode for the inspection object W having the management number “No. 0001” and the product name “Chocolate”. When the test piece P is detected, information indicating that the type of the test piece P is “Fe (iron)” and the size is “diameter 2.0 mm” is displayed. Further, for example, as shown in FIG. 4C, when the test piece P is placed obliquely on the transport unit 2 and only the test piece ID can be obtained, the display unit 7 displays “test piece P "Detection", "Material / size unknown", "Test piece is slanted" are displayed. The indication “test piece is slanted” is not based on the result of detecting that the test piece P is actually placed diagonally on the transport unit 2, but the test piece ID. For the result that only the information can be acquired, the state that can cause the error is notified.

  As shown in FIG. 4A, the test piece information acquisition unit 8 includes a light projector 8a and a light receiver 8b that are also used as a passage detection unit that detects the passage of the inspection object W on the transport unit 2. The information recording unit 13 of the test piece P is read to acquire test piece information indicating the type, size, and the like of the test foreign object piece 11 of the test piece P.

  That is, in the present embodiment, the light projector 8a and the light receiver 8b that are conventionally provided in the foreign object detection device 1 as the passage detection means are used not only as the passage detection means but also as the test piece information acquisition unit 8 as the reading means. It is like that.

  When the test piece P to be used at the time of the operation check is set in advance as a predetermined test piece, the collation unit 6c includes the test piece information acquired from the test piece P by the test piece information acquisition unit 8 and the test piece storage unit 6a. The test piece information of the predetermined test piece stored in the table is collated.

  FIG. 5 is a perspective view of the test piece according to the embodiment of the present invention. FIGS. 6A and 6B are side views of the test piece according to the embodiment of the present invention. Moreover, Fig.7 (a), (b) is a side view which shows the other example of the test piece which concerns on embodiment of this invention. FIGS. 8A and 8B are perspective views of the test piece according to the embodiment of the present invention. 9A is a perspective view of the test piece according to the embodiment of the present invention, FIG. 9B is a bottom view, and FIG. 9C is a side view. .

  As shown in FIGS. 5 and 6, the test piece P is one in which one test foreign object piece 11 is stored in a rectangular parallelepiped storage member 12 made of a resin material. A recess is formed on the upper surface of the storage member 12, and the test foreign object piece 11 is stored in the recess. The recess is closed by the seal member 14 in a state in which the test foreign object piece 11 is accommodated.

  As the test foreign object piece 11 stored in the storage member 12 of the test piece P, for example, a stainless steel ball having a diameter of 3.0 mm is used as shown in FIG. 6A, or as shown in FIG. An iron ball having a diameter of 2.0 mm is used. Various types and sizes of the test foreign material pieces 11 are used.

  An information recording unit 13 in which test piece information including a test piece ID, type, size, parity, and the like is recorded is formed at the lower end of one or both side surfaces of the storage member 12 of the test piece P. The information recording unit 13 includes a transmission unit 13a that transmits light and a non-transmission unit 13b that does not transmit light, and is optically read by a test piece information acquisition unit 8 including a projector 8a and a light receiver 8b. It is supposed to be. The test piece P is placed on the transport unit 2 so that the side surface on which the information recording unit 13 is formed is orthogonal to the light beam between the projector 8a and the light receiver 8b. In other words, the test piece P is placed on the transport unit 2 such that the side surface on which the information recording unit 13 is formed faces the direction orthogonal to the transport direction of the transport unit 2.

  When the storage member 12 of the test piece P is made of a material that does not transmit light, the transmission portion 13a of the information recording unit 13 is configured as a notch penetrating both side surfaces of the storage member 12, and the test piece P In the case where the storage member 12 is made of a material that transmits light, such as a transparent resin, the information recording unit 13 is formed by coloring one or both side surfaces of the storage member 12 as a non-transmission part 13b. be able to.

  Here, the test piece ID of the information recording unit 13 is information for identifying that the inspection object W is the test piece P, or for identifying a certain test piece P and another test piece P, The type is information representing the material (iron, stainless steel, etc.) of the test foreign material piece 11, and the size is information representing the size (diameter 2.0 mm, 3.0 mm, etc.) of the test foreign material piece 11. Yes, the parity is information for performing error correction so that these pieces of test piece ID, type, and size can be read accurately.

  Of these test piece ID, type, size, and parity test piece information, the transmission unit 13a and the non-transmission unit 13b corresponding to the test piece ID include the transmission unit 13a and the non-transmission unit corresponding to the type, size, and parity, respectively. It is formed larger than the portion 13b. For this reason, the transmission part 13a and the non-transmission part 13b corresponding to the test piece ID are reliably read by the test piece information acquisition part 8.

  As shown in FIG. 7A, the identification information portion 13 of the test piece P is not limited to the lower end of one or both side surfaces of the storage member 12, but only a predetermined distance from the lower end of one or both side surfaces of the storage member 12. It may be formed above. It is preferable that the position of the information recording unit 13 is appropriately determined so as to coincide with the position through which the light beam of the test piece information acquisition unit 8 passes.

  As shown in FIG. 7 (b), the test piece P is connected to the storage member 12 storing the test foreign object piece 11 and the storage member 12 as necessary, and as the connection member formed with the information recording unit 13. The adapter 15 may be configured.

  Thus, when it comprises so that the adapter 15 may be connected to the storage member 12, the information recording part 13 can be added also to the conventional storage member 12 in which the information recording part 13 is not formed.

  In this case, even if the adapter 15 is larger than the storage member 12, there is no inconvenience in handling, and the size of the adapter 15 can be increased, so that the area where the information recording unit 13 can be formed is larger and more. Can be formed as the information recording unit 13.

  Further, when the size of the adapter 15 is large, the size of the transmission part 13a and the non-transmission part 13b of the information recording part 13 can be increased, so that the information recording part 13 is received with the light projector 8a of the test piece information acquisition part 8. It can be accurately read by the device 8b.

  As shown in FIG. 8A, when the storage member 12 of the test piece P is made of a material that transmits light, such as a transparent resin, the test piece P is placed on one side surface of the storage member 12 with the information The plate member 16 on which the recording portion 13 is formed can be constituted by being fixed by means such as adhesion. When the plate member 16 is fixed to one side surface of the storage member 12 of the test piece P, the plate member 16 may be a sheet-like material coated with an adhesive.

  In addition, as shown in FIG. 8B, when the storage member 12 of the test piece P is made of a material that transmits light, such as a transparent resin, the test piece P is parallel to the side surface in the storage member 12. The plate member 16 on which the information recording unit 13 is formed may be fixed on a flat surface.

  As shown in FIGS. 9A to 9E, the test piece P stores the sheet 17 in which the storage member 12 is made of a resin having a hollow structure and a plurality of test foreign material pieces 11 having different sizes are fixed. You may comprise from what was accommodated in the member 12. FIG.

  The storage member 12 of the test piece P shown in FIGS. 9A to 9E is configured so that the storage member 12 is made of resin, and the amount of X-ray transmitted by the storage member 12 is reduced by reducing the amount of resin constituting the storage member 12. By adopting a hollow structure so as to avoid attenuation, when the detection unit 3 of the foreign object detection device 1 is composed of the X-ray detection unit 3A, the X-ray transmission amount is attenuated by the storage member 12 and the test foreign object piece 11 Can be prevented from affecting the detection.

  FIG. 9A shows a state in which the side surface on the near side of the drawing of the storage member 12 is removed in order to explain the state in which the test foreign material piece 11 is stored inside the storage member 12 having a hollow structure. . Further, the sheet 17 to which the plurality of test foreign object pieces 11 are fixed is formed on the inner wall of the side surface of the storage member 12 with one side surface of the storage member 12 removed as shown in FIG. It is designed to slide in the groove.

  Further, the information recording unit 13 of the test piece P is formed at the lower part of one side surface of the storage member 12 as shown in FIGS. 9A, 9B, 9C, or FIG. As shown to (e), you may form in the lower part of the surface parallel to the side surface in the storage member 12. FIG.

  A test piece P shown in FIGS. 9A to 9E has six metal balls (for example, aluminum balls) having a diameter of 2.0 mm, 3.0 mm, 4.0 mm, 5.0 mm, 6.0 mm, and 7.0 mm. ) Are arranged in a line at predetermined intervals as a plurality of test foreign object pieces 11 having different sizes, and fixed on the sheet 17.

  The storage member 12 of the test piece P is not limited to a hollow structure, and the storage member 12 is molded as thin as possible in order to avoid attenuation of the amount of X-ray transmission by the storage member 12. It is good also as a structure which reduced the quantity of resin which comprises.

  Next, the operation of the foreign object detection apparatus 1 using the test piece P will be described.

  Hereinafter, a case where the test piece P is transported on the transport unit 2 while the normal mode for inspecting the inspection object W is executed will be described.

  First, the type of the inspected object W is set in the setting unit 4, and the inspection object W of the set type is conveyed by the conveying unit 2 and inspected by the detecting unit 3 (normal foreign matter) In the detection mode), the foreign matter determination unit 5 determines whether or not a foreign matter is included in the inspection object W based on the detection output of the detection unit 3, and causes the display unit 7 to display the determination result.

  Then, when the test piece information acquisition unit 8 reads the test piece ID (included in the test piece information) from the test piece P conveyed with the inspection object W as shown in FIG. 4A, the test piece determination unit 6b. Switches the operation mode from the normal foreign object detection mode to the operation confirmation mode for confirming the operation of the detection unit 3. That is, the test piece determination unit 6b determines whether the inspection object W is a product or a test piece P based on the presence or absence of the test piece ID with respect to the inspection object W sequentially conveyed during the foreign object inspection operation. .

  When the switching to the operation check mode is set, the test piece determination unit 6b displays the test piece information read from the test piece P on the display unit 7 in the manner illustrated in FIGS. 7B and 7C. Further, the test piece determination unit 6b stores the test piece storage in the case where the detailed test piece information whose basic test piece information read from the test piece P matches the test piece ID is stored in the test piece storage unit 6a. Detailed test piece information stored in the unit 6 a is extracted and displayed on the display unit 7. For this reason, the user can confirm whether or not the test piece P used for the operation confirmation was the desired one.

  Next, the test piece determination unit 6b is set by the setting unit 4 to use the default test piece P when the default test piece P to be used for the operation check process is determined in advance, that is, If the test piece ID, type, size, etc. of the predetermined test piece are stored in the test piece storage unit 6a, whether or not the used test piece P matches a predetermined test piece P is determined. The determination result is displayed on the display unit 7 as “default test piece” or “not default test piece”. For this reason, the user can know whether or not the prescribed test piece P to be used is actually used for the operation check.

  Next, the test piece determination unit 6b determines whether or not the detection output of the detection unit 3 for the test piece P matches the detection output corresponding to the “type” and “size” of the test piece information (or the allowable range). Is determined by referring to correspondence information indicating the relationship between the type and size of the test piece P stored in advance in the test piece storage unit 6a and the detected output, and the determination result is displayed on the display unit 7. Display. For this reason, the user can confirm whether the detection part 3 operate | moves correctly.

  Next, when the operation check process in the operation check mode ends, the test piece determination unit 6b switches the operation mode so as to return from the operation check mode to the normal foreign object detection mode.

  The above processing is performed each time the test piece information acquisition unit 8 acquires test piece information from the test piece P conveyed with the inspection object W.

  Note that the test piece storage unit 6a may store a series of operation confirmation histories including determination results for each type of the inspection object W based on the determination results of the test piece determination unit 6b. In this case, the operation check history stored in the test piece storage unit 6a can be printed out by, for example, a printer or transferred to various external storage media or an external terminal device according to an instruction from the setting unit 4. Even after the confirmation is completed, a series of operation contents including the determination result can be confirmed, and can be used for quality management as a quality record.

  As described above, the test piece P according to the present embodiment includes the test foreign material piece 11 and the storage member 12 that stores the test foreign material piece 11, and the storage member 12 holds the test foreign material piece 11. The information recording unit 13 includes test piece information that is optically readable information including at least a test piece ID as identification information for identification.

  For this reason, the foreign object detection device 1 using the test piece P is recorded in the information recording unit 13 of the test piece P by the projector 8a and the light receiver 8b, which are optical pass sensors provided as a standard in the foreign object detection device 1. The test piece ID read can be read and the test foreign substance piece 11 stored in the test piece P can be identified by the read test piece ID, so that misidentification between the test piece P and the product can be prevented, It is possible to determine whether or not a predetermined test piece P is used from among the various test pieces P, and it is possible to improve the reliability of operation confirmation.

  Further, since the test foreign object piece 11 is identified by the optical passage sensor and automatically switched from the foreign object detection mode to the operation confirmation mode, even if the product and the test piece P are mixed and sequentially conveyed on the conveyance unit 2. In addition, the number of test pieces P can be excluded from the statistics such as the number of inspections, the number of non-defective products, the number of defective products (the number of foreign matter mixed), and the correct statistics can be performed only for products.

  Further, the test piece P according to the present embodiment includes an adapter 15 (connection member) connected to the storage member 12, and the information recording unit 13 is provided in the adapter 15.

  Therefore, even when the information recording unit 13 is not provided in the storage member 12 or when it is difficult to provide the information recording unit 13, the adapter 15 having the information recording unit 13 is connected to the storage member 12. Thus, the test foreign object piece 11 housed in the test piece P can be identified.

  In the test piece P according to the present embodiment, the information recording unit 13 includes a transmission unit 13a that transmits light and a non-transmission unit 13b that does not transmit light.

  For this reason, the transmission part 13a and the non-transmission part 13b can be created by a simple method such as notching, painting, and pasting, and there is a risk of malfunctioning more than a configuration in which information is electrically recorded and read. Therefore, it is possible to provide a test piece P having low manufacturing cost and durability.

  In the test piece P according to the present embodiment, the transmission part 13a and the non-transmission part corresponding to the information (type, size, parity) other than the test piece ID are transmitted by the transmission part 13a and the non-transmission part 13b corresponding to the test piece ID. It is characterized by being formed larger than 13b.

  For this reason, the transmissive part 13a and the non-transmissive part 13b corresponding to the test piece ID are optically reliably read.

  In the test piece P according to the present embodiment, the storage member 12 is made of a resin material having a hollow structure.

  For this reason, even when the test piece P is used in the foreign matter detection apparatus 1 that detects foreign matter using X-rays, the housing member 12 made of a resin material having a hollow structure transmits X-rays to detect the test foreign matter pieces 11. Since there is no influence, it is possible to perform highly accurate operation confirmation.

  Further, the foreign object detection apparatus 1 according to the present embodiment optically transmits a test piece ID from the test piece P in the foreign object detection apparatus 1 that detects foreign objects mixed in the inspection object W conveyed on the conveyance unit 2. The test piece information acquisition unit 8 to be read automatically, the operation confirmation processing unit 6 for identifying the test piece P based on the test piece ID read by the test piece information acquisition unit 8, and the identification result of the operation confirmation processing unit 6 The display part 7 to be provided.

  For this reason, the test piece ID is read from the test piece P using the projector 8a and the light receiver 8b, which are optical pass sensors normally provided in the foreign object detection device 1, as the test piece information acquisition unit 8, and based on the test piece ID. As a result, the result of identifying the test piece P is notified. Therefore, by referring to the notification content, whether or not there is a misidentification between the test piece P and the product, and a predetermined test piece P is used from various test pieces P. Whether or not the operation has been confirmed can be improved.

  The embodiment disclosed this time is illustrative in all respects and is not limited to this embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

  As described above, the foreign object detection device and the test piece according to the present invention have an effect that the operation can be accurately confirmed, and the foreign object mixed in the inspected object such as raw meat, fish, processed food, and medicine. It is useful as a foreign object detection device and a test piece for detecting

It is a block diagram which shows the structure of the foreign material detection apparatus which concerns on embodiment of this invention. It is a block diagram which shows the example by which the detection part of the foreign material detection apparatus which concerns on embodiment of this invention was comprised as a metal detection part. It is a block diagram which shows the example by which the detection part of the foreign material detection apparatus which concerns on embodiment of this invention was comprised as an X-ray detection part. (A) is a top view which shows the conveyance part of the foreign material detection apparatus which concerns on embodiment of this invention, (b), (c) is a display example of a display part. It is a perspective view of the test piece which concerns on embodiment of this invention. (A), (b) is a side view of the test piece which concerns on embodiment of this invention. (A), (b) is a side view which shows the other example of the test piece which concerns on embodiment of this invention. (A), (b) is a perspective view of the test piece which concerns on embodiment of this invention. (A) is a perspective view of the test piece which concerns on embodiment of this invention, (b), (d) is a bottom view, (c), (e) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Foreign object detection apparatus 2 Conveyance part (conveyance line)
DESCRIPTION OF SYMBOLS 3 Detection part 3A X-ray detection part 3B Metal detection part 4 Setting part 5 Foreign material determination part 6 Operation | movement confirmation process part (identification means)
6a Test piece storage unit 6b Test piece determination unit 6c Verification unit 7 Display unit (notification means)
8 Test piece information acquisition unit (reading means)
8a Emitter 8b Light receiver 11 Foreign matter piece for test 12 Storage member 13 Information recording part 13a Transmission part 13b Non-transmission part 14 Seal member 15 Adapter (connection member)
16 Plate member 17 Sheet 21 X-ray generator 22 X-ray detector 31 Signal generator 32 Transmitting coil 33a, 33b Receiving coil 34 Detector P Test piece W Inspected object

Claims (5)

A foreign object piece (11) for testing;
A storage member (12) for storing the test foreign material piece,
Said housing member (12) have a said test foreign material piece (11) information recording section at least includes optically readable information identification information for identifying is recorded (13),
The test piece, wherein the information recording unit (13) includes a transmission part (13a) that transmits light and a non-transmission part (13b) that does not transmit light . A connection member (15) connected to the storage member;
The test piece according to claim 1, wherein the information recording unit is provided on the connection member. The transmission part (13a) and the non-transmission part (13b) corresponding to the identification information are formed larger than the transmission part (13a) and the non-transmission part (13b) corresponding to information other than the identification information. The test piece according to claim 1 or 2. The test piece according to any one of claims 1 to 3, wherein the storage member (12) is made of a resin material having a hollow structure . In the foreign matter detection device (1) for detecting foreign matter mixed in the inspection object (W) transported on the transport line (2),
Reading means (8) for optically reading the identification information from the test piece according to any one of claims 1 to 4, while detecting the passage of the inspection object.
Identification means (6) for identifying the test piece based on the identification information read by the reading means (8);
A foreign matter detection apparatus comprising: notification means (7) for notifying the identification result of the identification means (6).

Images