JP4469622B2 - RFID continuous body and cable - Google Patents

Description

  The present invention relates to an RFID continuous body used for identifying cables such as an optical fiber cable and a metal cable, and a cable provided with the RFID continuous body.

  For example, in order to identify (specify) a target cable from a large number of cables laid on a trough or the like, for example, in a cable replacement work, removal work, etc. (work related to cables) ) Is directly or indirectly attached with cable identification information for identifying the own cable and other cables.

  That is, the cable identification information is printed on the surface of the sheath using ink, transfer paper, or a laser, or a tag engraved with the cable identification information is attached to the surface of the sheath. Furthermore, as shown in Patent Document 1, two-dimensional QR-coded cable identification information is printed on QR code printing paper, and this QR code printing paper is attached to the surface of the sheath of the cable using a protective film. is doing.

  By the way, in recent years, the number of optical fiber cables in which optical fiber cores and optical fiber tape cores are gathered ranges from a small number to a large number of cores, and the amount of cable identification information for identifying a single cable is enormous. Become. For this reason, it is not easy to attach all the cable identification information of the cable only by printing on the surface of the sheath, engraving on the tag, or sticking QR code printing paper on the surface of the sheath. In addition, it becomes difficult to identify a target cable from among a large number of cables, and work efficiency of work related to the cable is deteriorated.

Furthermore, since the printed cable identification information and the engraved cable identification information are exposed on the outside (surface) of the cable, the cable identification information cannot be read due to rubbing etc. after a long period of time has elapsed since the cable was laid. Thus, a situation occurs in which the cable cannot be identified. Even when QR code printing paper is attached to the surface of the sheath using a protective film, the protective film is peeled off from the sheath, and the same problem as described above occurs.
Japanese Patent Laid-Open No. 2001-21730

  In order to solve the above problems, an object of the present invention is to identify a target cable from a number of cables easily and in a short time, an RFID continuous body for cable identification, and the RFID link It is to provide a cable with a long body.

The RFID continuous body of the present invention is an RFID continuous body used for identifying a cable,
A first bonding tape having a first bonding surface;
A second bonding tape having a second bonding surface bonded to the first bonding surface;
Cable identification information for discriminating between the own cable and the other cable is disposed between the first joining tape and the second joining tape at appropriate intervals (including equal intervals) along the longitudinal direction of the tape. Many RFID elements that can be read and written by transmission,
A tensile member disposed between the first joining tape and the second joining tape and extending along the longitudinal direction of the tape;
Have

The cable of the present invention is
A cable core,
An RFID continuous body vertically or horizontally wound on the cable core, the first joining tape having a first joining surface, and the second joining tape having a second joining surface joined to the first joining surface. And reading the cable identification information for identifying the own cable and the other cable, which is arranged at an appropriate interval along the longitudinal direction of the tape between the first bonding tape and the second bonding tape by transmitting electromagnetic energy. An RFID continuous body comprising a number of writable RFID elements;
A sheath covering the cable core and the RFID continuous body;
Have

  Preferably, the cable further includes a buffer layer provided between the sheath and the cable core.

  Preferably, the RFID continuous body of the cable includes a tensile member disposed between the first joining tape and the second joining tape and extending along the longitudinal direction of the tape.

  In the present specification, the cable core includes at least a transmission path such as an optical fiber core and a member such as a slot and a tensile body for supporting the transmission path.

  Also, “(cable core) vertical” means to be placed in parallel (cable core), and “(cable core) horizontal winding” means that it is spirally wound around (cable core). means. Therefore, presser winding or other members may or may not be interposed between the cable core and the RFID continuous body.

  Therefore, according to the present invention, there is provided an RFID continuous body for identifying a cable that can easily and quickly identify a target cable from among a large number of cables, and a cable including the RFID continuous body. Can be provided.

  Embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a cross-sectional view of an optical fiber cable according to the first embodiment of the present invention.

  As shown in FIG. 1, the fiber cable 1 of 1st Embodiment has the cable core 3 as a main component. The cable core 3 includes a slot 5 and a tensile body 7 made of a steel stranded wire disposed in the center of the slot 5. A plurality (five in the first embodiment) of storage grooves 9 are formed in the outer periphery of the slot 5 in a spiral shape, and a plurality (five in the first embodiment) of optical fiber tape cores are formed in each of the storage grooves 9. The line 11 is stored.

  In the cable 1, an RFID continuous body 15 for identifying the optical fiber cable 1, which will be described later, is provided around the cable core 3. More specifically, the RFID continuous body 15 is arranged in parallel to the cable core 3 (attached vertically), or is wound around the cable core 3 in a spiral shape (laterally wound).

  A presser winding 13 is provided on the outer peripheral portion of the slot 5 so that the optical fiber ribbon 11 does not separate from the housing groove 9 and the RFID continuous body 15 is pressed. The presser winding 13 is disposed outside the RFID continuous body 15, but may be disposed inside the RFID continuous body 15.

  A buffer layer 29 made of a fiber body such as plastic yarn is provided on the outside of the presser winding 13.

  A sheath 27 that covers the cable core 3 and the RFID continuous body 15 is provided outside the buffer layer 29. The sheath 27 is made of PE (polyethylene) or PVC (polyvinyl chloride). In the first embodiment, the outer diameter of the sheath 27, in other words, the outer diameter of the optical fiber cable 1 is 18 mm.

  On the surface of the sheath 27, a position display (not shown) indicating the positions of RFID (Radio Frequency Identification) elements 23 (not shown in FIG. 1) arranged at equal intervals in the RFID continuous body 15 is provided in the longitudinal direction of the cable. Are attached at equal intervals. The interval of the position display is set to be the same as the interval of the RFID elements 23 in the cable longitudinal direction when the RFID continuous body 15 is accommodated in the optical fiber cable 1.

  Hereinafter, the configuration of the RFID continuous body 15 which is a main part of the embodiment of the present invention will be described in detail.

  FIG. 2 is a plan view of the RFID continuous body 15. 3 is a cross-sectional view of the RFID continuous body 15 taken along the line III-III in FIG.

  As shown in FIG. 3, the RFID continuous body 15 is sandwiched between the first bonding tape 17 and the second bonding tape 19 in the thickness direction (y direction) and the first bonding tape 17 and the second bonding tape 19. And a pair of tensile strengths sandwiched between the first bonding tape 17 and the second bonding tape 19 in the thickness direction and disposed on both sides of the RFID element 23 in the width direction (x direction). Member 25. The first bonding tape 17 and the second bonding tape 19 are bonded to each other with a thermosetting adhesive 21.

  Each RFID element 23 has an IC chip (not shown) that can read and write cable identification information for identifying its own cable and other cables by transmission of electromagnetic energy such as electromagnetic waves. The cable identification information includes the manufacturer, the date of manufacture, the name of the cable, the length of the cable, the content of the optical fiber ribbon, and the like. As a method for transmitting electromagnetic energy, an electromagnetic induction method is used in this embodiment, but a microwave method or an electromagnetic coupling method may be used. In the present embodiment, the RFID element 23 is cylindrical and has an outer diameter of 2.1 mm.

  The RFID elements 23 are equally spaced along the longitudinal direction of the first joining tape 17 and the second joining tape 19 (z direction), in other words, along the longitudinal direction of the cable core 3 (direction perpendicular to the paper surface in FIG. 1). Placed in. The distance in the cable longitudinal direction of a large number of RFID elements 23 when housed in the optical fiber cable 1 is approximately the maximum communication distance between the read / write device (not shown) and the RFID element 23 (about 1 m in the case of electromagnetic induction). It is set to be the same.

  The tensile member 25 is made of an aramid fiber or FRP (a general term for reinforced plastic) and has a string-like shape extending in the longitudinal direction of the tape.

  FIG. 4 is a perspective view showing the first bonding tape 17 and the second bonding tape 19. As shown in the figure, the first bonding tape 17 has a first bonding surface 17f to which the thermosetting adhesive 21 can be applied, and the second bonding tape 19 has a second bonding to which the thermosetting adhesive 21 can be applied. It has a surface 19f. The first bonding tape 17 and the second bonding tape 19 can be made of a PET material (polyethylene terephthalate). In this embodiment, the tape width of the first bonding tape 17 and the second bonding tape 19 is 6 mm, and the tape thickness of the first bonding tape 17 and the second bonding tape 19 is 0.1 mm (thermosetting adhesive 21). 0.11 mm) including the layer.

  In the present embodiment, the first bonding surface 17f of the first bonding tape 17 and the second bonding surface 19f of the second bonding tape 19 are bonded by adhesion, but may be configured to be bonded by thermal fusion. .

  Next, a method for manufacturing the RFID continuous body 15 and the optical fiber cable 1 according to the first embodiment will be described.

  After the thermosetting adhesive 21 is applied to the second bonding surface 19f of the second bonding tape 19, a plurality of RFID elements 23 are arranged at equal intervals along the tape longitudinal direction, and the pair of tensile members 25 are arranged in the tape longitudinal direction. Arranged on both sides of the plurality of RFID elements 23 along the direction. Next, the thermosetting adhesive 21 is applied to the first bonding surface 17 f of the first bonding tape 17, and the first bonding surface 17 f and the second bonding surface 19 f of the second bonding tape 19 are overlapped. Finally, the first joint surface 17f and the second joint surface 19f are joined by adhesion using a heating roller (not shown). As a result, the plurality of RFID elements 23 and the pair of tensile members 25 are held in a state of being sandwiched between the first bonding tape 17 and the second bonding tape 19. As described above, the RFID continuous body 15 having the plurality of RFID elements 23, the pair of tensile members 25, and the bonding tape (the first bonding tape 17 and the second bonding tape 19) is manufactured.

  Next, the RFID continuous body 15 is vertically attached or laterally wound on the separately manufactured cable core 3, the presser winding 13 is wound, and a buffer layer 29 is provided on the outer side thereof. By providing the sheath 27 outside the buffer layer 29, the optical fiber cable 1 in which the RFID continuous body 15 is housed is manufactured.

  As described above, according to the optical fiber cable 1 of the first embodiment, the following advantages can be obtained.

(1) Since the RFID continuous body 15 includes the RFID element 23, even if the cable identification information of the optical fiber cable 1 becomes enormous, all cables can be operated by appropriately operating the read / write device. The identification information can be written into the RFID element 23 easily and in a short time. Similarly, all the cable identification information can be read from the RFID element 23 easily and in a short time. Therefore, the target optical fiber cable 1 can be easily identified from a large number of cables in a short time, and the efficiency of work related to the cables (cable replacement work, removal work, etc.) is improved.

(2) Even after a long period of time has elapsed since the optical fiber cable 1 was laid, the cable identification information written in the RFID element 23 does not disappear, and the optical fiber cable 1 can be identified over a long period of time. it can.

(3) A large number of RFID elements 23 are arranged in the optical fiber cable 1 at equal intervals along the longitudinal direction of the cable, and the intervals are substantially the same as the maximum communication distance between the read / write device and the RFID element 23. The optical fiber cable 1 can be identified at any work area along the fiber cable 1.

(4) Since the tensile strength member 25 provided on the RFID continuous body 15 bears the tension acting on the optical fiber cable 1 at the time of laying the cable and after the laying, the RFID element 23 is damaged by the laying tension and the tension after laying. Can be prevented. This also improves the life of the RFID element 23 and maintains the identification function of the optical fiber cable 1 for a long period of time.

(5) Since the buffer layer 29 provided outside the RFID continuous body 15 absorbs the side pressure acting on the optical fiber cable 1, the RFID element 23 can be prevented from being damaged by the side pressure. This also improves the life of the RFID element 23 and maintains the identification function of the optical fiber cable 1 for a long period of time.

(6) Since the RFID continuous body 15 includes a plurality of RFID elements 23 arranged at equal intervals along the tape longitudinal direction, the RFID continuous body 15 is disposed along the cable core 3 or wound in a spiral shape. Thus, it is easy to store a large number of RFID elements 23 in the optical fiber cable 1 (inside the sheath 27) at equal intervals along the cable longitudinal direction.

(7) Since the plurality of RFID elements 23 are fixed to the bonding tapes 17 and 19, there is no positional deviation of the RFID elements 23 inside the optical fiber cable 1, and the optical fiber cable 1 can be identified stably. . Further, a member such as a presser winding for fixing each RFID element to the cable core 3 is not necessary.

(8) Since the RFID continuous body 15 has a tape shape, it can be placed in the optical fiber cable 1 in the same manner as a label tape or a tear string, and the current manufacturing speed of the optical fiber cable can be maintained. Can do.

(9) Since the RFID continuous body 15 can be manufactured in a separate process with respect to the optical fiber cable manufacturing line, a device for supplying the RFID element and a position detecting device for arranging the RFID elements at regular intervals are used as the optical fiber. There is no need to add it to the cable production line. Therefore, the only necessary change in the current optical fiber cable production line is the addition of a feeding device for the RFID continuous body 15.

(10) Since the RFID continuous body 15 has the shape of a tape having a small thickness, the optical fiber cable 1 can be provided even if the RFID continuous body 15 is arranged along the cable core 3 or wound around the outer periphery of the cable core 3. The outer diameter of the does not increase. Therefore, the space required for storage and laying of the optical fiber cable is the same as before.

(11) The RFID element 15 is arranged along the cable core 3 or wound around the outer periphery of the cable core 3 so that the RFID element 23 is arranged relatively outside the optical fiber cable 1. Therefore, transmission of electromagnetic energy between the read / write device and the RFID element 23 can be performed efficiently.

  FIG. 5 is a sectional view of an optical fiber cable according to the second embodiment of the present invention.

  As shown in FIG. 5, the optical fiber cable 31 of the second embodiment has a cable core 33 as a main component. The cable core 33 includes a tension member 35, and the tension member 35 has a strength member 37 disposed at the center. A plurality (twelve in the second embodiment) of optical fiber cords 39 are collectively twisted and provided on the outer periphery of the tension member 35. A presser winding 41 is provided on the outer peripheral portion of the plurality of optical fiber cords 39 so that the plurality of optical fiber cords 39 are not detached from the tension member 35.

  An RFID continuous body 43 for identifying the optical fiber cable 33 is vertically attached or horizontally wound on the cable core 33. Since the RFID continuous body 43 has substantially the same configuration as the RFID continuous body 15 of the first embodiment, a detailed description thereof is omitted (see FIGS. 2 to 4). In FIG. 5, the RFID continuous body 43 is disposed outside the presser winding 41, but may be disposed inside the presser winding 41.

  A buffer layer 47 made of a fiber body such as a plastic yarn is provided on the outer periphery of the cable core 33.

  A sheath 45 that covers the cable core 33 and the RFID continuous body 43 is provided outside the cable core 33. The sheath 45 is made of PE (polyethylene) or PVC (polyvinyl chloride). In the second embodiment, the outer diameter of the sheath 45, in other words, the outer diameter of the optical fiber cable 33 is 16 mm.

  On the surface of the sheath 45, position indication (not shown) indicating the position of the RFID element 23 in the RFID continuous body 43 is given at equal intervals along the cable longitudinal direction (direction perpendicular to the paper surface in FIG. 5). . The position display interval is set to be the same as the interval between the RFID elements 23 in the cable longitudinal direction when the RFID continuous body 43 is accommodated in the optical fiber cable 33.

  According to the second embodiment, the same advantages as in the first embodiment can be obtained.

  Note that the present invention is not limited to the described embodiment, and can be implemented in various other modes by making appropriate modifications. For example, the RFID continuous body 15 (43) may be used as a metal cable instead of the optical fiber cables 1 and 33.

It is sectional drawing of the optical fiber cable of 1st Embodiment of this invention. It is a top view of the RFID continuous body of 1st Embodiment of this invention. It is sectional drawing along the III-III line in FIG. It is a perspective view which shows the joining tape which is a component of the RFID continuous body of FIG. It is sectional drawing of the optical fiber cable of 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical fiber cable 3 Cable core 13 Press winding 15 RFID continuous length body 17 1st joining tape 17f 1st joining surface 19 2nd joining tape 19f 2nd joining surface 23 RFID element 25 Tensile member 27 Sheath 29 Buffer layer 31 Optical fiber cable 33 Cable core 43 RFID continuous body 45 Sheath 47 Buffer layer

Claims (4)

A cable core,
An RFID continuous body vertically or horizontally wound on the cable core, the first joining tape having a first joining surface, and the second joining tape having a second joining surface joined to the first joining surface. And reading the cable identification information for identifying the own cable and the other cable, which is arranged at an appropriate interval along the longitudinal direction of the tape between the first bonding tape and the second bonding tape by transmitting electromagnetic energy. An RFID continuous body comprising a plurality of writable RFID elements;
A sheath covering the cable core and the RFID continuous body;
Having cable. The cable according to claim 1 , further comprising a buffer layer provided between the sheath and the cable core. The RFID Renchotai, the first is placed adhesive tape and between the second bonding tape, and cable according to claim 1 or 2 having a tensile strength member extending along the longitudinal direction of the tape. An RFID runner used to identify a cable,
A first bonding tape having a first bonding surface;
A second bonding tape having a second bonding surface bonded to the first bonding surface;
Cable identification information for identifying the own cable and other cables arranged between the first joining tape and the second joining tape at an appropriate interval along the longitudinal direction of the tape can be read and written by transmitting electromagnetic energy. A plurality of RFID elements,
A tensile member disposed between the first joining tape and the second joining tape and extending along the longitudinal direction of the tape;
An RFID continuous body having:

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