Article authentication and transport device
The authentication and transport device automates the identification of items using flexible antennas with coaxial cables, addressing inefficiencies in transporting rolled paper products by ensuring accurate and efficient item verification during transport.
Patent Information
- Application Number
- JP2024037327
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-11
- Publication Date
- 2025-09-25
AI Technical Summary
Existing methods for transporting rolled paper products lack efficiency and accuracy due to the need for manual verification of individual information, which can lead to misreading and incorrect transportation.
An authentication and transport device with a clamping mechanism that includes flexible antennas using coaxial cables with antenna elements for wireless communication with RF tags, enabling automated and accurate identification of items during transport.
Enables high-workability and high-accuracy article authentication and transport by automating the identification process, reducing errors and improving operational efficiency.
Smart Images

Figure 2025138312000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to an authentication and transport device for authenticating and transporting an item, such as a paper roll. [Background technology]
[0002] Conventionally, thin plate products and wire products have been stored in large quantities indoors, etc., in coil-like packaging (hereinafter also referred to as coils), and, for example, upon request, the target coils are supported and transported by support means such as C-hooks or coil lifters attached to an overhead crane (see, for example, Patent Documents 1 and 2). On the other hand, rolled paper products and the like are clamped and carried out by clamping means such as a roll clamp provided on a clamp lift (see, for example, Patent Document 3). [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-195583 [Patent Document 2] Japanese Patent Application Publication No. 2019-167184 [Patent Document 3] Japanese Patent Application Laid-Open No. 2013-112425 Summary of the Invention [Problem to be solved by the invention]
[0004] Stored coils of thin sheet products and wire products have RF tags (also called RFID tags) attached to them, and these RF tags store (record) identification information (individual information) such as specifications. When a coil is transported, this identification information is checked to authenticate the coil to be transported. However, rolled paper products (such as cardboard) are individually managed by attaching a sheet of paper with individual information such as specifications to the paper product in advance. Therefore, when transporting rolled paper products, the operator of the roll clamp lift must check the information written on the sheet of paper before transporting them. This makes the work less efficient and there is also a risk of misreading and transporting the wrong paper product.
[0005] An object of the present invention is to provide an article authentication and transport device that can perform article authentication with high workability and high accuracy. [Means for solving the problem]
[0006] The present invention is as follows. [1] An authentication and transport device having a clamping means with first and second arms for clamping an article, which reads the identification information of an RF tag attached to the outer surface of the article when clamping the article, and clamps and moves the article with the clamping means, The clamping means is provided with a flexible antenna using a coaxial cable, the tip of which is provided with an antenna element for transmitting and receiving electromagnetic waves to and from the RF tag, and an RF reader connected to the base of the flexible antenna for wireless communication with the outside, An article authentication and transportation device characterized in that the antenna element is arranged at the tip or center of the first and / or second arm.
[0007] [2] The authentication and transportation device for items described in [1] above, characterized in that the flexible antenna is arranged along the side of the first and / or second arm and has an excess length at a position corresponding to the drive joint of the first and / or second arm.
[0008] [3] The coaxial cable includes an inner conductor, a cylindrical insulator covering the peripheral surface of the inner conductor, an outer conductor covering the peripheral surface of the cylindrical insulator, and an outer jacket covering the peripheral surface of the outer conductor, which are arranged coaxially; The flexible antenna is 1) The antenna element has an element portion formed by extending only the inner conductor and the tubular insulator of the coaxial cable at the tip end of the coaxial cable, and the base end of the element portion is covered with a balun conductor made of a conductive tape or tube that is conductive with the outer conductor, and the antenna element is formed on the tip end of the element portion that is not covered with the balun conductor, with the peripheral surface of the tubular insulator exposed. Or, 2) Only the inner conductor is protruded from the tip side of the coaxial cable to form an element part without the tubular insulator, the outer conductor and the outer jacket, and the peripheral surface of the inner conductor on the base side of the element part is covered with a balun conductor made of a conductive tape or tube that is electrically connected to the outer conductor of the coaxial cable via a resin member, and the tip side of the element part that is not covered with the balun conductor becomes the antenna element with the peripheral surface of the inner conductor exposed, thereby improving the antenna performance of the element part and imparting an antenna function to the coaxial cable. The authentication and transportation device for articles according to the above [1] or [2].
[0009] [4] The article authentication and transport device according to any one of [1] to [3] above, characterized in that it is a roll clamp lift.
[0010] [5] The article authentication transport device according to [4] above, characterized in that it transports a paper roll. [Effects of the Invention]
[0011] According to the article authentication and transport device of the present invention, article authentication can be performed with high workability and high accuracy. [Brief explanation of the drawings]
[0012] [Figure 1] FIG. 1A is an explanatory diagram of a clamp lift, which is an item authentication and transport device according to one embodiment of the present invention, in use; FIG. 1B is an explanatory diagram of the clamping means of the clamp lift, which is an item authentication and transport device according to the same embodiment of the present invention; [Figure 2] 10 is an explanatory diagram showing a state in which a paper roll is clamped by a clamping means of a clamp lift which is an authentication and transport device for the same article. FIG. [Figure 3] 1(a) is an explanatory diagram of first and second flexible antennas used in the article authentication and transportation device, and FIG. 1(b) is an explanatory perspective view of the flexible antennas. [Figure 4] 10(a) and 10(b) are respectively an explanatory diagram showing a partial cross-sectional side view of a first flexible antenna used in the authentication and transportation device for the same article, and an explanatory diagram showing a plan view of the same flexible antenna. [Figure 5] 10(a) and 10(b) are respectively an explanatory diagram showing a partial cross-sectional side view of a second flexible antenna used in the authentication and transportation device for the same article, and an explanatory diagram showing a plan view of the same flexible antenna. [Figure 6] 10A and 10B are explanatory diagrams of a clamping means according to a modified example. [Figure 7] 1 is an explanatory diagram of a system configuration of an authentication and transport device for articles; DETAILED DESCRIPTION OF THE INVENTION
[0013] Next, embodiments of the present invention will be described with reference to the accompanying drawings to facilitate understanding of the present invention. The authentication and transportation device for items (hereinafter also referred to simply as the authentication and transportation device) 10 according to one embodiment of the present invention shown in Figures 1(a), (b) and 2 is a clamp lift, and has a clamping means 14 equipped with first and second arms 12 and 13 for clamping an item 11. When clamping the item 11, the device reads the identification information (individual information) of an RF tag 15 attached to the outer surface of the item 11, and clamps and moves the item 11 with the clamping means 14. A detailed explanation is provided below.
[0014] The clamp lift shown in Figures 1(a), (b), and 2 is a lift equipped with a roll clamp, which is a clamping means 14 that directly clamps cylindrical or columnar articles (i.e., a roll clamp lift), but is not particularly limited as long as it has a clamping means equipped with a pair of first and second arms that clamp an article. For example, clamp lifts equipped with bale clamps, drum clamps, carton clamps, etc., as clamping means, are examples. Here, a bale clamp is used to clamp rectangular or cubic articles, a drum clamp is used to clamp articles such as drum cans, and a carton clamp is used to clamp articles such as box-shaped packages.
[0015] The article 11 shown in Figures 1(a), (b), and 2 is a roll-shaped (cylindrical) paper product whose outer surface is directly clamped from both sides (directions perpendicular to the axial direction) by clamping means 14 (roll clamp), but is not particularly limited to this as long as it is an article that can be clamped by clamping means having the first and second arms described above. For example, examples include mainly elastic waste paper, raw cotton, cloth, bagged grains, powder, etc., packed in a rectangular or cubic shape and clamped from both sides by bale clamps, drums, etc., clamped from both sides by drum clamps, box-shaped cargo, etc., clamped from both sides by carton clamps, etc. Note that the goods may be covered with packaging material as needed.
[0016] An RF tag 15 is attached to the outer peripheral surface (outer surface) of the article 11. 1(b) and 2, the attachment position of the RF tag 15 is sufficient as long as it is a position where it does not come into contact with the first and second arms 12, 13 of the clamping means 14 and is within a range visible to the operator of the clamp lift, and for example, it is preferable that it is on the outer circumferential surface of the article 11, in the upper region when the article 11 is turned on its side (when the axial direction of the article 11 is turned horizontally), and at the end in the axial direction. This RF tag 15 is available in, for example, sticker type and magnetic type, and can be selected appropriately depending on the object to be attached (the material of the article 11, packaging material, etc.).
[0017] The RF tag 15 is an identifier that stores (holds, records) the specifications of the item 11, such as identification information (data) such as material and dimensions, and when it receives a query wave via electromagnetic waves, it transmits a reply wave containing the identification information via electromagnetic waves. It is preferable that the identification number of the item 11 is printed in the margin on the surface of the RF tag 15, and furthermore, it is desirable that this printing be large enough to be visually identifiable by the operator of the clamp lift without getting out of the driver's seat. The types of this RF tag 15 include, for example, electronic tags, IC tags, ID tags, transponders, wireless tags, and wireless IC tags, and are further divided into metal compatible tags and non-metal compatible tags.
[0018] The RF tag 15 is preferably a passive type (no on-board battery) that operates only with power supplied from an RF reader (transmitter / receiver) 17 connected to a flexible antenna (hereinafter simply referred to as the antenna) 16, which will be described later, but it may also be a semi-passive type (with on-board battery (dedicated to sensor)) that communicates with power supplied from the RF reader, or an active type (with on-board battery (for communication and sensor)) that operates entirely with power supplied from a built-in (on-board) battery.
[0019] A flexible antenna 16 and an RF reader 17 connected to the base side of the flexible antenna 16 are installed on the clamping means 14. The flexible antenna 16 uses a coaxial cable 18 and has an antenna element 19 at its tip that transmits and receives electromagnetic waves (particularly radio waves, the same applies hereinafter) to and from the RF tag 15, and the RF reader 17 communicates wirelessly with the outside. The flexible antenna 16 is not particularly limited as long as it uses a coaxial cable 18, but it is preferable to use a cable-type non-directional flexible antenna as described in Japanese Patent No. 7178451.
[0020] Below, with reference to Figures 3(a), (b), 4(a), (b), 5(a), (b), we will briefly explain the flexible antennas (hereinafter also referred to simply as antennas) 20, 20a used as the flexible antenna 16 of the authentication and transportation device 10 for items of the present invention, and the RF reader 21 used as the RF reader 17. The flexible antennas 20 and 20 a use a coaxial cable 22 (antenna type) connectable to an RF reader 21 , and transmit and receive electromagnetic waves to and from the RF tag 15 attached to the outer surface of the article 11 .
[0021] The coaxial cable 22 used in the antenna 20 (antenna 20a as well) has a cross section that resembles multiple layers of concentric circles, and is a conventionally known cable that coaxially comprises an inner conductor (core wire: annealed copper wire) 23, an insulator (insulating member: polyethylene or the like) 24 that covers the peripheral surface of the inner conductor 23, an outer conductor (mesh-like copper wire or the like) 25 that covers the peripheral surface of the insulator 24, and an outer sheath (protective coating (insulator): vinyl) 26 that covers the peripheral surface of the outer conductor 25. The thickness of this coaxial cable 22 is, for example, about 2 to 20 mm.
[0022] An inner conductor 23 covered with an insulator 24 protrudes from the tip end surface of the coaxial cable 22 to form an element portion 27, and this element portion 27 has an antenna element 28 on the tip end. This antenna element 28 transmits and receives electromagnetic waves to and from the RF tag 15, and the length of the antenna element can be changed depending on the frequency of the electromagnetic waves, with the length L1 being adjustable within the range of 20 to 100 mm, for example.
[0023] The base side of the element section 27 (excluding the antenna element 28) is the portion that becomes the balun main body (balun conductor) 30 shown in Figures 3(a) and (b), and more specifically, as shown in Figures 4(a) and (b), the peripheral surface of the base-side insulator 24 is covered with a resin tube 29, and the peripheral surface of this tube 29 is covered with a balun conductor 30a. The tube 29 and the balun conductor 30a are arranged with a gap between them and the coaxial cable 22, and the balun conductor 30a is soldered to the outer conductor 25 of the coaxial cable 22 through this gap, and electrical continuity is achieved by this solder 31. As a result, the tube 29 and the balun conductor 30a function as a balun to improve the antenna performance of the element section 27, while also being able to intentionally pass current through the coaxial cable 22, thereby giving the coaxial cable 22 an antenna function.
[0024] 5(a) and (b), the peripheral surface of the insulator 24 on the base side of the element section 27 (excluding the antenna element 28) can be directly covered (coated) with a balun conductor 30b (having the same configuration as the balun conductor 30a) without using the resin tube 29 described above for the portion that becomes the balun main body (balun conductor) 30 shown in Figures 3(a) and (b). Note that in Figures 5(a) and (b), the same components as those in the flexible antenna 20 are denoted by the same reference numerals.
[0025] This balun conductor 30b is arranged with a gap between it and the coaxial cable 22, and the balun conductor 30b and the outer conductor 25 of the coaxial cable 22 are connected via this gap by, for example, soldering, and are electrically connected by this solder 31. As a result, the antenna 20a shown in Figures 5(a) and (b) has a simpler configuration than the antenna 20 shown in Figures 4(a) and (b), and by reducing the leakage current to the coaxial cable 22 side, the antenna performance of the element section 27 can be improved.
[0026] As shown in FIG. 3(a), the base end of the coaxial cable 22 is detachably connected via a connector 33 to a feeder line 32 (coaxial cable) connected to the RF reader 21. A ferrite core 34 is attached to the tip of the feeder line 32, at the connection between the feeder line 32 and the coaxial cable 22. This ferrite core 34 prevents (decouples) the leakage current flowing through the coaxial cable 22 from flowing to the feeder line 32. Therefore, it can be attached near the connection between the feeder line 32 and the coaxial cable 22, for example, to the base end of the coaxial cable 22, but it may not be used depending on the magnitude of the leakage current flowing through the coaxial cable 22.
[0027] The RF reader 21 sends a predetermined high-frequency current to the flexible antenna 20 (similarly to the flexible antenna 20a), and has a configuration similar to that of an existing RF tag reader (reader / writer). It is preferable that the RF reader 21 supplies power to the RF tag, but it is not necessary that the RF reader 21 does not supply power. This RF reader 21 uses the RF-ID mechanism to transmit a high-frequency current to the flexible antenna 20 and send it out as an electromagnetic wave. The RF tag receives the electromagnetic wave sent out from this flexible antenna 20 and returns preset identification information (data) as an electromagnetic wave. This returned electromagnetic wave is read by the flexible antenna 20.
[0028] As shown in Figure 1(b), in the authentication and transportation device 10 for items of the present invention, the flexible antenna 16 is arranged in an area from the base side (vehicle body side) to the tip side of the first arm 12 of the clamping means 14 so as to follow the shape of the first arm 12 and not come into contact with the item 11, and the RF reader 17 is arranged on the base side of the clamping means 14. A detailed explanation is provided below.
[0029] As shown in FIG. 1(a), the clamp means 14 is attached and fixed to a lift bracket 41 that is provided so as to be slidable in the up and down direction along a mast 40 attached to the front of the vehicle body. The clamping means 14 comprises an arm holder 42, which has an attachment portion (not shown) that is fixedly attached to the lift bracket 41, and a rotating portion 43 that is rotatably attached to the attachment portion around a horizontal axis, and the base portions of the pair of first and second arms 12, 13 are rotatably attached to the rotating portion 43 so that the tip ends of the first and second arms 12, 13 can be opened and closed (clamped).
[0030] 1(b), a flexible antenna 16 is directly attached and fixed to the widthwise side (side surface) of the first arm 12, and an RF reader 17 is attached and fixed to the side surface of the rotating part 43 of the arm holder 42. In this case, the antenna element 19 of the flexible antenna 16 is disposed at the tip of the first arm 12, but may be disposed at the center. In addition, a battery, an access point (not shown), etc. are connected to the RF reader 17. This makes it possible to prevent twisting from occurring between the flexible antenna 16 and the RF reader 17 when the rotating portion 43 of the arm holder 42 rotates relative to the attachment portion.
[0031] The flexible antenna 16 may be placed in an area that does not come into contact with the item 11, from its base side (vehicle body side) to its tip side, so as to follow the shape of the second arm 13, rather than the first arm 12. However, since the attachment position of the RF tag 15 may be irregular depending on the situation, it is preferable to place the flexible antenna 16 on both the first and second arms 12 and 13. Furthermore, although the flexible antenna 16 is attached and fixed to the side portion in the width direction of the first arm 12, it can also be attached and fixed to the back surface of the end portion in the width direction (the side facing the driver's seat). Furthermore, although the RF reader 17 is fixed to the side surface of the rotating part 43 , it may be attached to the top or bottom surface, or may be attached to the base of the first arm 12 .
[0032] As mentioned above, the bases of the first and second arms 12, 13 are rotatably attached to the rotating portion 43 of the arm holder 42, so when the flexible antenna 16 is attached along the side of the first and / or second arms 12, 13, there is a risk that it may be pulled by the drive joint of the first and / or second arms and cut off. Therefore, as shown in Fig. 6, it is preferable that flexible antenna 16 has an excess length at a position corresponding to the drive joint of the first and / or second arm. The length of this excess length may be set to a length that does not apply a pulling force to flexible antenna 16 (a length that does not cause it to break) even when first and / or second arms 12, 13 rotate relative to rotating part 43. Note that when there are multiple drive joints, it is preferable to provide an excess length at a position corresponding to each drive joint, but it is also possible to provide an excess length at some of the drive joints in consideration of the operating range of the drive joints. The above method is possible only if a flexible antenna 16 using a coaxial cable 18 is used.
[0033] Next, the system configuration of the article authentication and transport device 10 described above will be described with reference to FIG. The authentication and transport device 10 for goods is connected to the office, the office server room, inside the warehouse, and in front of the warehouse by, for example, a LAN cable.
[0034] Here, an office terminal (computer) is installed in the office so that workers in the office can check the management status (carry-in and carry-out) of the item 11, and this is connected to a LAN cable. In addition, the office server room is equipped with an inventory management system and a storage system server, which are connected to a LAN cable via a SW-HUB (switching hub). The storage system server is also connected to a UPS (uninterruptible power supply).
[0035] Inside the warehouse, there are BCRs (barcode readers, same below) for the inventory management system used by workers and on-site tablets, which are connected wirelessly to an access point (wireless device or wireless network) connected to a LAN cable so that they can communicate wirelessly. Meanwhile, an access point connected to a LAN cable is installed in front of the warehouse, and is connected wirelessly to the BCR for the inventory control system used by workers outside the warehouse (on the apron).
[0036] The clamp lift system in the warehouse will be described below. An operation terminal (terminal) is installed in the driver's cab of the clamp lift, and this operation terminal is connected to an access point (wireless device or wireless network) installed in the warehouse so that it can communicate wirelessly. In addition, an antenna is connected to the operation terminal via the access point (AP), so that signals from the operation terminal can be transmitted into the warehouse via the antenna, and signals from within the warehouse can be received by the operation terminal via the antenna. The antenna described above can wirelessly transmit and receive signals to and from an access point (AP) connected to the RF reader 17. A battery is connected to the RF reader 17 and the access point to enable power supply.
[0037] As a result, the operation terminal is wirelessly connected to the RF reader 17, and therefore, in response to instructions (operations) from the operation terminal, operations between the RF reader 17 and the flexible antenna 16, specifically operations between the RF reader 21 and the flexible antenna 20, can be automatically and repeatedly performed at predetermined intervals based on a preset program. The contents of the data read by the RF reader 17 and the operating status of the RF reader 17 are transmitted to and saved in this operation terminal.
[0038] Next, a method of using the article authentication and transport device 10 of the present invention will be described with reference to FIGS. The operator of the clamp lift operates the clamp lift to move it to the storage location of the target item 11 (to be transported). At this time, electromagnetic waves are not emitted from the flexible antenna 16 to authenticate the identification information of the RF tag 15. Next, the article 11 is clamped from its outer periphery by the first and second arms 12, 13 of the clamping means 14. Then, the operator of the clamp lift operates the operation terminal 44 installed in the driver's seat to irradiate electromagnetic waves from the flexible antenna 16 in order to authenticate the identification information of the RF tag 15. This authentication of the identification information of the RF tag 15 may be performed either before or after the article 11 is clamped by the clamping means 14.
[0039] On the other hand, when the first and second arms 12, 13 of the clamping means 14 clamp the article 11 (when the gripping operation button is pressed), a signal is automatically sent to the operation terminal 44, which can be used as a trigger to automatically irradiate electromagnetic waves. At this time, the host system notifies the result of authentication of the designated item (target article 11). In this way, the irradiation of electromagnetic waves can be performed manually (at the operator's own discretion) or automatically by the operator of the clamp lift, and it is not necessary to use a higher-level system, but the operator of the clamp lift can perform authentication while checking the layout of the storage area (arrangement environment) of the item 11. The irradiation of electromagnetic waves can be stopped after authentication of the RF tag 15, but can also be stopped by a signal to release the clamping state of the item 11 by the clamping means 14, which will be described later.
[0040] If the result of authenticating the identification information of the RF tag 15 indicates that the item 11 is the target item, the item 11 is clamped and moved by the clamping means 14 of the clamp lift. On the other hand, if the item is not the target item, the clamping operation is stopped, or the clamped state of the item 11 is released and the clamping means 14 is pulled away, and then the clamp lift is moved to the storage location of the target item, and the above operation is repeated. The operator of the clamp lift then lifts up the target item 11 while it is clamped by the clamping means 14, moves it, and then moves the item 11 to the front of the warehouse for shipping. Note that inside the warehouse and on the apron (outside the warehouse), workers use a BCR for the inventory management system to check the removal of the item 11, based on a barcode attached to the item 11 separately from the RF tag 15, and the removal is managed by the inventory management system in the office server room.
[0041] Although the present invention has been described above with reference to one embodiment, the present invention is not limited to the configuration described in the above embodiment and includes other embodiments and modifications that are conceivable within the scope of the claims. For example, the scope of the present invention also includes a case in which an authentication and transport system for articles of the present invention is configured by combining some or all of the above-described embodiments and modifications. In the above embodiment, the authentication and transport device for items is described as a clamp lift, but there is no particular limitation as long as it has a clamp means with first and second arms that clamp an item, and clamps and moves an item that requires authentication. [Industrial Applicability]
[0042] INDUSTRIAL APPLICABILITY The present invention is industrially useful because it can provide an article authentication and transport device that can perform article authentication with high workability and high accuracy. [Explanation of symbols]
[0043] 10: Authentication conveyance device for article, 11: article, 12: first arm, 13: second arm, 14: clamping means, 15: RF tag, 16: flexible antenna, 17: RF reader, 18: coaxial cable, 19: antenna element, 20, 20a: flexible antenna, 21: RF reader, 22: coaxial cable, 23: inner conductor, 24: insulator, 25: outer conductor, 26: outer jacket, 27: element portion, 28: antenna element, 29: tube (resin member), 30: balun body (balun conductor), 30a, 30b: balun conductor, 31: solder, 32: feeder line, 33: connector, 34: ferrite core, 40: mast, 41: lift bracket, 42: arm holder, 43: rotating portion, 44: operation terminal
Claims
1. An authentication and transport device having a clamping means with first and second arms for clamping an article, wherein when clamping the article, the device reads identification information of an RFID tag attached to an outer surface of the article, and clamps and moves the article with the clamping means, The clamping means is provided with a flexible antenna using a coaxial cable, the tip of which is provided with an antenna element for transmitting and receiving electromagnetic waves to and from the RF tag, and an RF reader connected to the base of the flexible antenna for wireless communication with the outside, An article authentication and transport device, characterized in that the antenna element is disposed at the tip or center of the first and / or second arms.
2. An authentication and transportation device for items as described in claim 1, characterized in that the flexible antenna is arranged along the side of the first and / or second arm and has an excess length at a position corresponding to the drive joint of the first and / or second arm.
3. The coaxial cable includes an inner conductor, a cylindrical insulator covering the peripheral surface of the inner conductor, an outer conductor covering the peripheral surface of the cylindrical insulator, and an outer jacket covering the peripheral surface of the outer conductor, which are arranged coaxially; The flexible antenna is 1) The antenna element has an element portion formed by extending only the inner conductor and the tubular insulator of the coaxial cable at the tip end of the coaxial cable, and the base end of the element portion is covered with a balun conductor made of a conductive tape or tube that is conductive with the outer conductor, and the antenna element is formed on the tip end of the element portion that is not covered with the balun conductor, with the peripheral surface of the tubular insulator exposed. Or, 2) Only the inner conductor is protruded from the tip side of the coaxial cable to form an element part without the tubular insulator, the outer conductor and the jacket, and the peripheral surface of the inner conductor on the base side of the element part is covered with a balun conductor made of a conductive tape or tube that is electrically connected to the outer conductor of the coaxial cable via a resin member, and the tip side of the element part that is not covered with the balun conductor becomes the antenna element with the peripheral surface of the inner conductor exposed, thereby improving the antenna performance of the element part and imparting an antenna function to the coaxial cable.
2. The article authentication and transport device according to claim 1.
4. 4. The article authentication and transport device according to claim 1, wherein the article authentication and transport device is a roll clamp lift.
5. 5. The article authentication transport device according to claim 4, wherein the transport device transports a paper roll.
Citation Information
Patent Citations
Material yard management system
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