RFID reading device and detection device

Abstract

Provided is an RFID reading device capable of suppressing the occurrence of inconsistency between a product of an object to be detected as an RF tag in an RFID receiving device and a product to be detected in a metal detection device. The RFID reading device comprises an RFID receiving device used for receiving a signal sent by an RF tag on a product; the metal detection device is used for detecting unnecessary metal mixed in the product; and the shell is used for accommodating the RFID receiving device and the metal detection device.

Description

TECHNICAL FIELD

[0001] The utility model relates to RFID reading device and detection device. BACKGROUND

[0002] A tag detection device and a needle detection device of a needle detection part are disclosed in patent document 1. In the needle detection device of patent document 1, the tag detection device and the needle detection part are independently configured.

[0003] PRIOR ART DOCUMENTS

[0004] PATENT DOCUMENT

[0005] Patent document 1: CN213866992A SUMMARY

[0006] PROBLEMS TO BE SOLVED BY THE UTILITY MODEL

[0007] When the tag detection device and the needle detection part are independently configured, the time points when the tag detection device detects the tag on the product and the needle detection part detects the product may be deviated. In this case, the phenomenon that the product detected by the tag detection device and the product subjected to needle detection by the needle detection part should be consistent may occur.

[0008] MEANS FOR SOLVING THE PROBLEMS

[0009] One embodiment of the present disclosure relates to an RFID reading device comprising: an RFID receiving device for receiving a signal emitted by an RF tag on a product; a metal detection device for detecting unnecessary metal mixed into the product; and a housing for accommodating the RFID receiving device and the metal detection device.

[0010] According to the above configuration, since the RFID receiving device and the metal detection device are accommodated in the housing, the time difference between the detection of the RF tag on the product by the RFID receiving device and the needle detection of the product by the metal detection device can be reduced as much as possible. Therefore, the phenomenon that the product as a detection target in the RFID receiving device as the RF tag and the product as a detection target in the metal detection device are inconsistent can be suppressed.

[0011] In the above RFID reading device, the housing can also have a door type structure and be configured as a region surrounded by a door through which the product can pass.

[0012] According to the above configuration, the detection region of the RF tag on the product by the RFID receiving device and the needle detection region of the product by the metal detection device can be made consistent. This helps to reduce the time difference between the detection of the RF tag on the product by the RFID receiving device and the needle detection of the product by the metal detection device.

[0013] In the above-described RFID reading device, the housing is made of metal.

[0014] According to the above-described configuration, it is possible to suppress the influence of external interference such as electromagnetic waves. This contributes to improving the accuracy of the detection result of the RF tag on the product by the RFID receiving device and the accuracy of the detection result of the product by the metal detecting device.

[0015] The detection device provided with the above-described RFID reading device further includes a device main body and a conveyor belt through which the product passes, and the RFID reading device is installed on the device main body to detect the product passing through the conveyor belt as a detection target.

[0016] According to the above-described configuration, it is possible to realize a detection device that can suppress the occurrence of a phenomenon in which the product that is a detection target in the RFID receiving device and the product that is a detection target in the metal detecting device do not coincide.

[0017] In the above-described RFID reading device, when the RFID reading device is provided as a first RFID reading device, the detection device further includes a second RFID reading device for receiving a signal emitted from the RF tag on the product, the second RFID reading device being installed at a position different from the first RFID reading device with respect to the device main body and being located on a downstream side of the first RFID reading device in a conveying direction of the product conveyed on the conveyor belt to detect the product passing through the conveyor belt as a detection target.

[0018] According to the above-described configuration, it is possible to grasp the conveying state of the product detected by the first RFID reading device, i.e., the RFID receiving device and the metal detecting device, on the downstream side of the first RFID reading device in the conveying direction.

[0019] In the above-described RFID reading device, when the RFID reading device is provided as a first RFID reading device, the detection device further includes a third RFID reading device for receiving a signal emitted from the RF tag on the product, the third RFID reading device being installed at a position different from the first RFID reading device with respect to the device main body and being located on an upstream side of the first RFID reading device in a conveying direction of the product conveyed on the conveyor belt to detect the product passing through the conveyor belt as a detection target.

[0020] According to the above structure, the state of the product detected by the first RFID reading device, i.e., the RFID receiving device and the metal detector, can be grasped in the conveying direction on the upstream side of the first RFID reading device.

[0021] In the above RFID reading device, when the RFID reading device is set as the first RFID reading device, the detection device further includes a second RFID reading device and a third RFID reading device, the second RFID reading device is installed at a position different from the first RFID reading device with respect to the device body and is located on the downstream side of the first RFID reading device in the conveying direction of the product conveyed on the conveying belt to detect the product conveyed by the conveying belt as a detection target, and the third RFID reading device is installed at a position different from the first RFID reading device with respect to the device body and is located on the upstream side of the first RFID reading device in the conveying direction of the product conveyed on the conveying belt to detect the product conveyed by the conveying belt as a detection target.

[0022] According to the above structure, the state of the product detected by the first RFID reading device, i.e., the RFID receiving device and the metal detector, can be grasped in the conveying direction on the downstream and upstream sides of the first RFID reading device.

[0023] In the above RFID reading device, further includes a shunting device for shunting the product conveyed by the conveying belt, the shunting device is connected with the part on the downstream side of the conveying belt, and includes a shunting mechanism for shunting the product, the shunting mechanism shunts the product according to at least one of the detection result of the RFID receiving device detecting the RFID tag on the product or the detection result of the metal detector detecting the product.

[0024] According to the above structure, the product 11 as a detection target can be shunted in the first RFID reading device 22, i.e., the RFID receiving device 31 and the metal detector 32, according to the detection result displayed in the first RFID reading device 22.

[0025] In the above RFID reading device, when the RFID reading device is set as the first RFID reading device, the detection device further comprises a fourth RFID reading device for receiving the signal emitted by the RF tag on the product, the shunting device further comprises a plurality of shunting paths through which the product passes, and the shunting mechanism is configured to shunt the product to any one of the plurality of shunting paths. The fourth RFID reading device is installed at a position different from the first RFID reading device to detect the product passing through the plurality of shunting paths as a detection object.

[0026] According to the above structure, the shunting condition of the product detected by the first RFID reading device, i.e., the RFID receiving device and the metal detection device, in the shunting device can be grasped.

[0027] In the above RFID reading device, the fourth RFID reading device comprises a plurality of RFID reading devices, and the plurality of fourth RFID reading devices are respectively installed on the plurality of shunting paths to detect the product passing through the plurality of shunting paths as a detection object.

[0028] The above structure is helpful to improve the accuracy of grasping the shunting condition.

[0029] In the above RFID reading device, when the RFID reading device is set as the first RFID reading device, the detection device further comprises a fifth RFID reading device for receiving the signal emitted by the RF tag on the product, the shunting device further comprises a single shunting path through which the product passes, and the shunting mechanism is configured to determine whether to shunt the product to pass through the shunting path. The fifth RFID reading device is installed on the shunting path to detect the product passing through the shunting path as a detection object.

[0030] According to the above structure, the shunting condition of the product detected by the first RFID reading device, i.e., the RFID receiving device and the metal detection device, in the shunting device can be grasped. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a diagram illustrating the structure of the detection device in the first embodiment.

[0032] Figure 2 is a diagram illustrating the structure of the RFID reading device in Figure 1 .

[0033] Figure 3 is a diagram illustrating the structure of the detection device in the second embodiment.

[0034] Figure 4This is a diagram illustrating the structure of the detection device in the third embodiment.

[0035] Figure 5 This is a diagram illustrating the structure of the detection device in the fourth embodiment.

[0036] Figure 6 This is a diagram illustrating the structure of the detection device in the fifth embodiment.

[0037] Figure 7 This is a diagram illustrating the structure of the detection device in the sixth embodiment. Detailed Implementation

[0038] First Implementation Method

[0039] The first embodiment will now be described with reference to the accompanying drawings.

[0040] like Figure 1 As shown, the needle detector 10 is a detection device used to detect whether unwanted metal is mixed into a product 11 before it is shipped as a product to be inspected. The product 11 is, for example, a sewn garment. Unwanted metal is, for example, a broken needle. In the following description, whether unwanted metal is mixed into the product 11 may be simply described as "needle detection".

[0041] Detection device

[0042] The detection device 10 is equipped with a device body 20. The device body 20 carries the components S constituting the detection device 10. The components S include a conveyor belt 21 and an RFID reader 22.

[0043] main body of the device

[0044] The main body of the device 20 is Figure 1 The height is a cuboid shape with a diameter equal to the inside and outside of the paper. The main body 20 of the device is movable and mounted by means of wheels or the like. Figure 1 On the floor of the factory or other testing space, inside the paper. In the following description, directional terms such as "up" and "down" are defined based on the direction of gravity. The direction perpendicular to the "up and down direction" of the main body 20 of the device, i.e. Figure 1 The "vertical direction" refers to the "width direction" of the main body 20 of the device. The direction perpendicular to both the "vertical direction" and the "width direction" is... Figure 1 The left and right directions in the diagram represent the "transfer direction" of product 11 during inspection. The transfer direction is... Figure 1 The direction from right to left in the middle, i.e., the forward direction, or the return direction opposite to the forward direction.

[0045] Constituent components

[0046] The conveyor belt 21 is an endless strip-shaped component with a certain thickness. The width direction of the conveyor belt 21 is consistent with the width direction of the device body 20. The conveyor belt 21 is mounted on multiple rollers installed on the device body 20. The multiple rollers are driven to rotate, for example, by a motor installed on the device body 20. The conveyor belt 21 rotates along with the rotation of the multiple rollers, thereby conveying the product 11 along the conveying direction.

[0047] The RFID reader 22 is integrally assembled with the main body 20. The RFID reader 22 includes a housing 30, an RFID receiver 31, and a metal detector 32. The housing 30 is used to house the RFID receiver 31 and the metal detector 32. In other words, the RFID receiver 31 and the metal detector 32 are integrated together.

[0048] More specifically, such as Figure 1 and Figure 2 As shown, the housing 30 is made of metal and has the effect of suppressing external interference such as electromagnetic waves, and has a gate-shaped structure. The housing 30 has two parallel supporting parts 30a at both ends, and a main body 30b connected to the two supporting parts. The two supporting parts 30a are fixed to both sides of the main body 20 in the width direction. The main body 30b has a certain vertical space relative to the conveyor belt 21 and extends in the width direction. An RFID receiver 31 and a metal detector 32 are fixedly installed inside the main body 30b. A bracket, for example, is also provided inside the main body 30b, to which the RFID receiver 31 and the metal detector 32 are fixed respectively.

[0049] The RFID receiver 31 includes, for example, a radio wave transmitter and an information reader. The radio wave transmitter emits radio waves of a specific frequency. The information reader receives and reads the ID signal transmitted by the RF tag 12 (described later) in response to the radio waves emitted by the radio wave transmitter. In this way, the RFID receiver 31 detects the RF tag 12 by reading the ID signal transmitted by the RF tag 12 (described later) in response to the radio waves emitted by the radio wave transmitter.

[0050] The metal detection device 32, for example, internally includes a plurality of first sensors. These first sensors are arranged, for example, along the width of the conveyor belt 21. The device body 20 also internally includes a plurality of second sensors, arranged in a straight line along the width of the device body 20. Each first sensor is paired with one of the plurality of second sensors. Each second sensor is mounted on the side opposite to the metal detection device 32 relative to the conveyor belt 21. For example, when the product 11 is conveyed through the conveyor belt 21, the metal detection device 32 detects the distortion of the magnetic field between each pair of first and second sensors. In this way, the metal detection device 32 can detect whether unwanted metal has been mixed into the product 11 and perform a pin detection.

[0051] In the RFID reader 22, the housing 30 is configured such that the product 11 can pass through an area R enclosed by a door consisting of two support portions 30a and a main body portion 30b. Therefore, the RFID receiver 31 detects the ID signal transmitted from the RF tag 12 on the product 11 within the area R through which the product 11 can pass. The metal detector 32 detects whether unwanted metal has been mixed into the product 11 within the area R through which the product 11 can pass. In other words, the area where the RFID receiver 31 detects the RF tag 12 on the product 11 coincides with the area where the metal detector 32 performs pin detection.

[0052] Alternatively, the detection device 10 may also include a control unit. The control unit may be integrated into the device body 20 or mounted externally to the device body 20. The control unit is electrically connected, for example, to the RFID receiver 31 and the metal detector 32, i.e., the RFID reader 22, via wires. The control unit performs processing related to the detection of the product 11 based, for example, on signals input from the RFID receiver 31 and the metal detector 32, i.e., the RFID reader 22.

[0053] RF tag

[0054] like Figure 1 As shown, each of the products 11 to be inspected by the needle detector 10 has an RF tag 12. For example, the RF tag 12 is directly attached to the product 11 or packaged together with the product 11. In other words, when transported by the conveyor belt 21, each product 11 is transported together with its RF tag 12.

[0055] The RF tag 12 includes an antenna and an IC chip. The antenna generates power using radio waves emitted by the radio wave transmitter of the RFID receiver 31. The antenna type is selected according to the communication method between the information detection device of the RFID receiver 31 and the RF tag 12. For example, when the communication method is radio wave, the antenna can be a plate antenna. When the communication method is electromagnetic induction, the antenna can be a coil antenna. The IC chip uses the power generated by the antenna to output an ID signal representing the electrical information stored internally. The IC chip internally includes a storage circuit. The storage circuit stores electrical information related to the RF tag 12 containing the IC chip. This electrical information becomes identification information related to the identification result of the product 11 with the RF tag 12. The identification information includes product information used to identify the product 11 with the RF tag 12. The product information includes information used to identify the product 11 with the RF tag 12, such as the product name, color, size, and shipping location of the product 11. Furthermore, the identification information may also include manufacturing information such as the manufacturing plant and production line of the product 11, or inspection information related to inspections performed during the manufacturing process.

[0056] Needle detector testing process

[0057] like Figure 1 As shown, product 11 and RF tag 12 are placed sequentially on the upstream side of the conveying direction and then conveyed to the downstream side of the conveying direction. Next, as product 11 is conveyed via conveyor belt 21, a series of checks, including needle detection and ID signal reading, are performed simultaneously when it passes the RFID reader 22.

[0058] If the test results indicate that no unwanted metal has been mixed in, product 11 will reach the downstream side of the conveyor belt 21 during its conveying process and will be removed from the conveyor belt 21 together with RF tag 12. At this point, the detection of product 11 in the needle detector 10 is complete.

[0059] On the other hand, if the test results indicate the presence of unwanted metal, product 11, after passing through RFID reader 22, will not continue to the downstream side of the transmission direction, but will be sent back to the upstream side of the transmission direction along with RF tag 12. Subsequently, needle detector 10 will perform re-inspection and other operations on product 11.

[0060] The function of this implementation method

[0061] The RFID reader 22 houses the RFID receiver 31 and the metal detector 32 together within the housing 30. This means that in the needle detection device 10, when the product 11 passes through the RFID reader 22, a series of detection operations, including needle detection and ID signal reading, can be performed simultaneously. In this way, the time difference between the RFID receiver 31's detection of the RF tag 12 on the product 11 and the metal detector 32's needle detection operation on the product 11 can be minimized.

[0062] Effects of this implementation method

[0063] (1-1) When performing detection, the needle detection device 10 can suppress the phenomenon that the product 11 to be detected as RF tag 12 in RFID receiver 31 and the product 11 detected by metal detector 32 are inconsistent.

[0064] (1-2) The housing 30 is designed to form a door-shaped structure with an area R surrounded by the door, which allows the product 11 to pass through. With this design, the area where the RFID receiver 31 detects the RF tag 12 on the product 11 coincides with the area where the metal detector 32 detects the needle on the product 11. This effectively reduces the time discrepancy between the RFID receiver 31's detection of the RF tag 12 on the product 11 and the metal detector 32's detection of the needle on the product 11.

[0065] (1-3) The housing 30 is designed to be made of metal. This design allows the housing 30 to suppress the effects of external interference, such as electromagnetic waves. This is very effective in improving the accuracy of the RFID receiver 31 in detecting the RF tag 12 on the product 11 and the accuracy of the metal detector 32 in detecting the pin on the product 11.

[0066] Second Implementation Method

[0067] The following description focuses on the differences between the second embodiment and the first embodiment, and is provided in conjunction with the accompanying drawings. Therefore, the same reference numerals are used for structures identical to those in the first embodiment, and detailed descriptions are omitted.

[0068] like Figure 3 As shown, component S includes a conveyor belt 21, an RFID reader 22, and an RFID reader 23. Hereinafter, the RFID reader 22 will be referred to as the first RFID reader 22, and the RFID reader 23 will be referred to as the second RFID reader 23.

[0069] The second RFID reader 23 is assembled integrally with the main body 20. The second RFID reader 23 is located at a different position than the first RFID reader 22, positioned downstream of the first RFID reader 22. The second RFID reader 23 has the same structure as the housing 30; for example, it uses a metal housing 40, which has the effect of suppressing external interference such as electromagnetic waves. Inside the housing 40 is an RFID receiver 41 with the same structure as the RFID receiver 31, including, for example, a radio wave transmitting unit and an information reading unit. The second RFID reader 23, i.e., the RFID receiver 41, is used to detect the ID signal transmitted from the RF tag 12 on the product 11.

[0070] Furthermore, the detection device 10 may also include a control unit. When the detection device includes a control unit, the control unit is connected, for example, to the second RFID reader 23 via a wire. The control unit performs processing related to the detection of the product 11, for example, based on signals input from the second RFID reader 23.

[0071] like Figure 3 As shown, during the process of product 11 being conveyed by conveyor belt 21, checks such as detection by the detection probe and reading of the ID signal are performed simultaneously. After that, when product 11 passes the second RFID reader 23, the ID signal is read.

[0072] Effects of the second implementation method

[0073] According to the second embodiment described above, in addition to achieving the same functions and effects as the first embodiment, the following effects can also be obtained.

[0074] (2-1) In the inspection device 10, the second RFID reader 23 is located at a different position than the first RFID reader 22, and is located downstream of the first RFID reader 22. With this configuration, the transmission status of the product 11, which is to be inspected, in the transmission direction through the first RFID reader 22, the RFID receiver 31, and the metal detector 32, passing downstream of the first RFID reader 22.

[0075] Third Implementation Method

[0076] The following description focuses on the differences between the third embodiment and the first embodiment, and is provided in conjunction with the accompanying drawings. Therefore, for configurations identical to those in the first embodiment, the same reference numerals are used and their descriptions are omitted.

[0077] like Figure 4As shown, the constituent member S includes, in addition to the conveyer 21 and the first RFID reading device 22, a third RFID reading device 24. Hereinafter, the first RFID reading device 22 is referred to as a first RFID reading device 22, and the third RFID reading device 24 is referred to as a third RFID reading device 24.

[0078] The third RFID reading device 24 is assembled as one body with the device main body 20. The third RFID reading device 24 is located at a position different from that of the first RFID reading device 22, and is disposed on the upstream side of the first RFID reading device 22. The third RFID reading device 24 has the same structure as the housing 30, and for example, has a metal housing 50 capable of suppressing external disturbances such as electromagnetic waves. Inside the housing 50 is housed a structure identical to the RFID receiving device 31, for example, an RFID receiving device 51 including a wave transmitting portion and an information reading portion. The third RFID reading device 24, that is, the RFID receiving device 51, is capable of detecting an ID signal transmitted from the RF tag 12 on the product 11.

[0079] Further, the detection device 10 can include a control unit. When the detection device includes the control unit, the control unit is connected to the third RFID reading device 24, for example, through a cable. The control unit performs processing related to detection of the product 11, for example, based on a signal input from the third RFID reading device 24.

[0080] As shown, the product 11 is subjected to reading of the ID signal when passing through the third RFID reading device 24 during conveyance by the conveyer 21 and before detection operations such as needle detection and ID signal reading are performed in combination. Figure 3

[0081] Effects of the Third Embodiment

[0082] According to the above-described third embodiment, in addition to the same effects and advantages as those of the first embodiment, the following effects can be obtained.

[0083] (3-1) In the detection device 10, the third RFID reading device 24 is disposed at a position different from that of the first RFID reading device 22, and is located on the upstream side of the first RFID reading device 22. With this configuration, it is possible to grasp the conveyance condition of the product 11 as a detection target, which passes through the upstream side of the first RFID reading device 22 in the conveyance direction, in the first RFID reading device 22, the RFID receiving device 31, and the metal detector 32.

[0084] Fourth Embodiment

[0085] ​The following description focuses on the differences between the fourth embodiment and the first to third embodiments, and is provided in conjunction with the accompanying drawings. Therefore, for configurations identical to those in the first to third embodiments, the same reference numerals will be used and their descriptions will be omitted.

[0086] like Figure 5 As shown, in addition to the conveyor belt 21 and the RFID reader 22, the component S also includes the RFID reader 23 in the second embodiment and the RFID reader 24 in the third embodiment.

[0087] like Figure 5 As shown, during the process of product 11 being conveyed by conveyor belt 21, and before the simultaneous implementation of detection operations such as pin detection and ID signal reading, the ID signal is read when it passes through the third RFID reader 24. Furthermore, during the process of product 11 being conveyed by conveyor belt 21, and after the simultaneous implementation of detection operations such as pin detection and ID signal reading, the ID signal is also read when it passes through the second RFID reader 23.

[0088] Effects of the fourth implementation method

[0089] According to the fourth embodiment described above, in addition to achieving the same functions and effects as the first embodiment, the following effects can also be obtained.

[0090] (4-1) The detection device 10, i.e. the component S, includes the second RFID reader 23 and the third RFID reader 24. With this configuration, the transmission status of the product 11, which is to be detected, in the transmission direction of the first RFID reader 22 downstream and upstream of the first RFID reader 22, the RFID receiver 31 and the metal detector 32 can be monitored.

[0091] Fifth Implementation Method

[0092] The following description focuses on the differences between the fifth embodiment and the first embodiment, and is provided in conjunction with the accompanying drawings. Therefore, for configurations identical to those in the first embodiment, the same reference numerals will be used and their descriptions will be omitted.

[0093] like Figure 6 As shown, the component S includes a conveyor belt 21, an RFID reader 22, a diversion device 5, and an RFID reader 25, in addition to the conveyor belt 21 and the RFID reader 22. Hereinafter, the RFID reader 22 will be referred to as the first RFID reader 22, and the RFID reader 25 will be referred to as the fourth RFID reader 25.

[0094] Flow divider

[0095] like Figure 6As shown, the diversion device 5 is a device connected to the downstream section of the conveyor belt 21. After passing through the first RFID reader 22, the diversion device 5 diverts the products 11 that have undergone checks such as needle detection and ID signal reading. The diversion of the products 11 is based on at least one of the needle detection result and the ID signal reading result. The diversion device 5 includes a diversion mechanism 5a and two diversion paths 5b. The diversion mechanism 5a diverts the products 11 to either of the two diversion paths 5b.

[0096] A fourth RFID reader 25 is installed on each of the two diversion paths 5b. The fourth RFID reader 25 is integrated with the diversion path 5b and positioned differently from the first RFID reader 22. The fourth RFID reader 25 has the same structure as the housing 30, for example, a metal housing 60 capable of suppressing external interference such as electromagnetic waves. Inside the housing 60, a device with the same structure as the RFID receiver 31 is provided, for example, an RFID receiver 61 including a radio wave transmitter and an information reader. The fourth RFID reader 25, i.e., the RFID receiver 61, is used to detect the ID signal transmitted from the RF tag 12 on the product 11.

[0097] Additionally, the detection device 10 may also include a control unit. When the detection device includes a control unit, the control unit is connected, for example, to the diversion device 5 and the fourth RFID reader 25 via wires. The control unit performs processing related to the detection of product 11, for example, based on signals input from the diversion device 5 and the fourth RFID reader 25.

[0098] like Figure 6 As shown, when product 11 is conveyed via conveyor belt 21, after completing the combined detection related to needle detection and ID signal reading, it passes through either of the two diversion paths 5b. During its passage through diversion path 5b, when product 11 passes the fourth RFID reader 25, its ID signal is read.

[0099] Effects of the fifth implementation method

[0100] According to the fifth embodiment described above, in addition to obtaining the same functions and effects as the first embodiment, the following effects can also be obtained.

[0101] (5-1) The detection device 10 includes a diversion device 5. Through this device, the product 11 to be detected is diverted in the first RFID reader 22, i.e., the RFID receiver 31 and the metal detector 32, based on the detection result displayed in the first RFID reader 22.

[0102] (5-2) The detection device 10, i.e. the component S, includes the fourth RFID reader 25. Thus, the diversion status of the product 11 detected by the first RFID reader 22 (i.e., the RFID receiver 31 and the metal detector 32) in the diversion device 5 can be determined.

[0103] (5-3) Each fourth RFID reader 25 is installed on the corresponding diversion path 5b to detect the product 11 passing through the corresponding diversion path 5b. This significantly improves the accuracy of situation assessment when monitoring diversion status.

[0104] Sixth Implementation Method

[0105] The following description focuses on the differences between the sixth embodiment and the first embodiment, and is provided in conjunction with the accompanying drawings. Therefore, for configurations identical to those in the first embodiment, the same reference numerals will be used and their descriptions will be omitted.

[0106] like Figure 7 As shown, the component S includes a conveyor belt 21, an RFID reader 22, a diversion device 6, and an RFID reader 26, in addition to the conveyor belt 21 and the RFID reader 22. Hereinafter, the RFID reader 22 will be referred to as the first RFID reader 22, and the RFID reader 26 will be referred to as the fifth RFID reader 26.

[0107] Flow divider

[0108] like Figure 7 As shown, the diversion device 6 is a device connected to the downstream section of the conveyor belt 21. The diversion device 6 functions similarly to the diversion device 5; after detection by the first RFID reader 22, and after the detection operations such as needle detection and ID signal reading are performed simultaneously, it diverts the product 11. The diversion device 6 includes a diversion mechanism 6a and a single diversion path 6b. The diversion mechanism 6a is responsible for deciding whether to allow the product 11 to pass through the diversion path 6b. If it is decided not to allow the product 11 to pass through the diversion path 6b, the diversion mechanism 6a removes the product 11 from the detection process of the detection device 10.

[0109] A fifth RFID reader 26 is installed on the diversion path 6b. The fifth RFID reader 26 is integrated with the diversion path 6b and is located in a different position from the first RFID reader 22. The fifth RFID reader 26 has the same structure as the housing 30; for example, it is equipped with a metal housing 70 to suppress the influence of external interference such as electromagnetic waves. An RFID receiver 71 is installed inside the housing 70, and its structure is the same as that of the RFID receiver 31, including, for example, a radio wave transmitter and an information reader. The fifth RFID reader 26, i.e., the RFID receiver 71, is responsible for detecting the ID signal transmitted from the RF tag 12 on the product 11.

[0110] Furthermore, the detection device 10 may also include a control unit. When the detection device includes a control unit, the control unit is connected, for example, via wires to the diversion device 6 and the fifth RFID reader 26. The control unit performs processing related to the detection of the product 11 based on signals input from the diversion device 6 and the fifth RFID reader 26.

[0111] like Figure 7 As shown, when product 11 is conveyed via conveyor belt 21, after completing the combined inspection related to needle detection and ID signal reading, it will either pass through diversion path 6b or be discharged from the inspection process of inspection device 10. When product 11 passes through diversion path 6b, it will pass through the 5th RFID reader 26 for ID signal reading.

[0112] Effects of the sixth implementation method

[0113] According to the sixth embodiment described above, in addition to obtaining the same functions and effects as the first embodiment, the following effects can also be obtained.

[0114] (6-1) The detection device 10 includes a diversion device 6. With this configuration, the diversion status of the product 11 detected by the first RFID reader 22, i.e., the RFID receiver 31 and the metal detector 32, can be determined.

[0115] Other implementation methods

[0116] The above-described embodiments can be modified and implemented as follows. The embodiments and the following modifications can be combined and implemented within the scope of technical inconsistency.

[0117] In the detection device 10 of the fifth embodiment, the construction of the second RFID reader 23 or the third RFID reader 24 can be applied using the same method as described in the second to fourth embodiments. The other embodiments described herein are also applicable to the sixth embodiment.

[0118] In the fifth embodiment, there can be multiple diversion paths 5b, and the number can be appropriately changed, for example, more than three. In this case, the number of the fourth RFID reader 25 should be adjusted according to the number of diversion paths 5b.

[0119] In the fifth embodiment, the diversion device 5 only needs to have at least a diversion mechanism 5a. In this case, the diversion path 5b can be configured as a device separately provided with the detection device 10. The other embodiments described herein can also be applied to the sixth embodiment.

[0120] Explanation of reference numerals in the attached figures

[0121] 5, 6... diversion means

[0122] 5a, 6a... diversion mechanism

[0123] 5b, 6b... diversion path

[0124] 10... detection means

[0125] 11... product

[0126] 12... RFID tag

[0127] 20... device main body

[0128] 21... conveyer

[0129] 22, 23, 24, 25, 26... RFID reading means (1st RFID reading means, 2nd RFID reading means, 3rd RFID reading means, 4th RFID reading means, 5th RFID reading means)

[0130] 30, 40, 50, 60, 70... cabinet

[0131] 31, 41, 51, 61, 71... RFID receiving means

[0132] 32... metal detection means

Claims

1. An RFID reading device, characterized in that the RFID reading device comprising: an RFID receiving device for receiving a signal emitted from an RF tag on a product; a metal detecting device for detecting an unnecessary metal mixed into the product; and a housing for housing the RFID receiving device and the metal detecting device.

2. The RFID reading device according to claim 1, wherein the housing is a door type structure and configured so that the product can pass through an area surrounded by the door. the housing is made of metal.

3. The RFID reading device of claim 2, wherein, 4. An inspection device comprising the RFID reading device according to any one of claims 1 to 3, the inspection device further comprising a device main body and a conveyer through which the product passes, characterized in that the RFID reading device being installed on the device main body to inspect the product conveyed through the conveyer as an object to be inspected. when the RFID reading device is provided as a first RFID reading device, the inspection device further comprising a second RFID reading device for receiving a signal emitted from the RF tag on the product, 5. The detection device of claim 4, wherein, the second RFID reading device being installed at a position different from the first RFID reading device with respect to the device main body and on a downstream side of the first RFID reading device in a conveyance direction of the product conveyed on the conveyer to inspect the product conveyed through the conveyer as an object to be inspected. when the RFID reading device is provided as a first RFID reading device, the inspection device further comprising a third RFID reading device for receiving a signal emitted from the RF tag on the product, 6. The detection device of claim 4, wherein, the third RFID reading device being installed at a position different from the first RFID reading device with respect to the device main body and on an upstream side of the first RFID reading device in a conveyance direction of the product conveyed on the conveyer to inspect the product conveyed through the conveyer as an object to be inspected. when the RFID reading device is provided as a first RFID reading device, the inspection device further comprising a second RFID reading device and a third RFID reading device, 7. The detection device of claim 4, wherein, the second RFID reading device being installed at a position different from the first RFID reading device with respect to the device main body and on a downstream side of the first RFID reading device in a conveyance direction of the product conveyed on the conveyer to inspect the product conveyed through the conveyer as an object to be inspected, the third RFID reading device being installed at a position different from the first RFID reading device with respect to the device main body and on an upstream side of the first RFID reading device in a conveyance direction of the product conveyed on the conveyer to inspect the product conveyed through the conveyer as an object to be inspected. the inspection device further comprising a diverging device for diverging the product conveyed through the conveyer, 8. The detection device of claim 4, wherein, the diverging device being installed at a position different from the first RFID reading device with respect to the device main body and on a downstream side of the first RFID reading device in a conveyance direction of the product conveyed on the conveyer to diverge the product conveyed through the conveyer as an object to be inspected. The shunting device is connected to a portion of the downstream side of the conveyor belt, and includes a shunting mechanism for shunting the product, The shunting mechanism shunts the product based on at least one of a detection result of the RFID receiving device detecting the RF tag on the product or a detection result of the metal detector detecting the product.

9. The detection device of claim 8, wherein, When the RFID reading device is a first RFID reading device, the detection device further includes a fourth RFID reading device for receiving a signal emitted by the RF tag on the product, The shunting device further includes a plurality of shunting paths through which the product passes, The shunting mechanism is configured to shunt the product to any one of the plurality of shunting paths, The fourth RFID reading device is installed at a position different from the first RFID reading device to detect the product passing through the plurality of shunting paths as a detection target.

10. The detection device according to claim 9, wherein The fourth RFID reading device includes a plurality of RFID reading devices, The plurality of fourth RFID reading devices are respectively installed on the plurality of shunting paths to detect the product passing through the plurality of shunting paths as a detection target.

11. The detection device of claim 8, wherein, When the RFID reading device is a first RFID reading device, the detection device further includes a fifth RFID reading device for receiving a signal emitted by the RF tag on the product, The shunting device further includes a single shunting path through which the product passes, The shunting mechanism is configured to determine whether to shunt the product through the shunting path, The fifth RFID reading device is installed on the shunting path to detect the product passing through the shunting path as a detection target.

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