JP6638420B2 - Cable with identification function, cable identification device and cable identification method - Google Patents

Description

  The present invention relates to a cable with a discriminating function having a function of easily discriminating a specific cable from a plurality of cables, a cable discriminating apparatus for discriminating a specific cable from a plurality of cables, and a cable discriminating apparatus. About the method.

  For example, in a cable pit or a duct of a power plant or a substation, many control cables may be laid in an untidy and intertwined manner. In such a case, in order to identify and specify the target control cable when removing the control cable or troubleshooting, etc., follow one end of one cable (for example, the terminal block side of the device) visually or by hand. I had to go, and it took a lot of effort and time.

  For this reason, a technique is known in which an optical fiber is disposed within a covering member of a signal line of a cable, light is incident from one end of the optical fiber, and light is emitted from the other end, thereby identifying a specific cable. (For example, see Patent Document 1). Also, identification information is obtained from a first IC tag provided on one connector of the cable and a second IC tag provided on the other connector, and one connector and the other connector are determined based on the two pieces of identification information. A technique for determining whether a cable belongs to the same cable is known (for example, see Patent Document 2).

JP 2013-196960 A JP 2006-243834 A

  By the way, many cables are laid in an overlapping manner in a cable pit of a power plant or a substation. Therefore, when the technique of Patent Document 1 is applied, the optical fiber may be damaged by the weight of the cable. Further, light is only emitted from the other end of the optical fiber, and the cable cannot be identified unless it is from the other end, and the cable cannot be identified in the middle of the cable (within the pit).

  Similarly, in the technique of Patent Document 2, the cable can be identified only by the IC tag provided on the connector of the cable, that is, only at both ends of the cable, and cannot be identified in the middle of the cable. In addition, IC tags must be provided on both connectors of the cable to manage identification information and the like, which increases equipment costs and management costs.

  Accordingly, it is an object of the present invention to provide a cable with a discriminating function, a cable discriminating apparatus, and a cable discriminating method that can easily discriminate a specific cable from a plurality of cables at an arbitrary position.

In order to solve the above-mentioned problem, the invention according to claim 1 includes a cable body having a core covered with a non-conductive core covering, and a longitudinal direction of the core covering the outer peripheral surface of the core covering . and exploration conductor of no gap disposed conductive along, and a conductor coating of non-conductive covering exploration conductor and pushed the measurement terminal to the conductor covering, the exploration and the measuring terminal A cable with a discriminating function, wherein the cable is electrically connected to a conductor for use.

  According to the present invention, for example, the first measuring terminal such as a tester is pushed into the conductor coating of the cable A with the discriminating function which is known as the discrimination target, and is electrically connected to the exploration conductor, so that the discrimination target is known. A second measuring terminal such as a tester is pushed into the conductor coating of the cable B having no discriminating function to electrically conduct with the exploration conductor. Next, an electric value between the first measuring terminal and the second measuring terminal is measured by a tester or the like, and the cable B with the distinguishing function is determined based on whether the measured value is a predetermined value. Determine whether the cable is the target cable.

An invention according to claim 2 is a first measurement terminal which is pushed into an arbitrary first measurement position of the conductor coating of the cable with the discrimination function according to claim 1 and is electrically connected to the search conductor. Pushed into an arbitrary second measurement position of the conductor coating, connected to a second measurement terminal electrically connected to the search conductor, the first measurement terminal and the second measurement terminal, A cable discriminating device comprising: a measuring unit that measures an electric value between the first measurement position and the second measurement position.

According to a third aspect of the present invention, in the cable determination device according to the second aspect , an output unit that determines whether an electrical value measured by the measurement unit is a predetermined value, and outputs a determination result. It is characterized by having.

A fourth aspect of the present invention, the first measurement position of any of the conductor coating of the discrimination function cable according to 請 Motomeko 1, wherein to search for conductor and electrically connected by pushing the first measurement terminal A first conduction step, a second conduction step of pushing a second measurement terminal into an arbitrary second measurement position of the conductor coating to electrically conduct with the search conductor, and the first measurement A measuring step of measuring an electrical value between the position and the second measurement position, and a determining step of determining whether the electrical value measured in the measuring step is a predetermined value, It is a cable discriminating method characterized by comprising:

According to the first, second and fourth aspects of the present invention, the two measuring terminals are pushed into the conductor coating of the cable with the discriminating function, and the electric value is measured. Can be easily determined and identified. Moreover, by pushing the measuring terminal into an arbitrary position of the conductor coating of the cable with the discriminating function, the cable can be discriminated at an arbitrary position.

According to the first aspect of the present invention , the search conductor is provided over the entire circumferential direction of the cable body, and the measurement terminal is electrically connected to the search conductor regardless of where the measurement terminal is pushed in the conductor coating. Therefore, the cable can be determined more easily and quickly.

According to the third aspect of the present invention, it is determined whether or not the electrical value measured by the measuring unit is a predetermined value, that is, whether or not the cables into which the two measuring terminals are pushed are the same cable. Is output from the output unit, so that anyone can easily and quickly determine the cable.

FIG. 1A is a front view showing a cable with a determination function according to Embodiment 1 of the present invention, and FIG. It is a schematic structure figure showing the cable discrimination device concerning an embodiment of the invention. FIG. 3 is a conceptual diagram illustrating an operation state of the cable determination device in FIG. 2. FIG. 3 is a cross-sectional view illustrating a state in which the cable with a determination function in FIG. 1 is sandwiched between measurement terminals of the cable determination device in FIG. 2. FIG. 3 is a conceptual diagram showing how the cable with a determination function of FIG. 1 is determined by the cable determination device of FIG. It is sectional drawing which shows the cable with a discriminating function which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the cable with another discrimination function which concerns on embodiment of this invention.

  Hereinafter, the present invention will be described based on the illustrated embodiment.

(Embodiment 1)
FIGS. 1 to 5 show this embodiment, and FIG. 1 is a front view (a) showing a cable 1 with a discriminating function according to this embodiment, and an AA sectional view (b) thereof. FIG. 2 is a schematic configuration diagram showing the cable identification device 10 according to the present embodiment. The cable 1 with a discriminating function is a cable having a function of easily discriminating a specific cable from a plurality of cables. In this embodiment, the cable 1 with a discriminating function is a control cable. This will be mainly described.

  The cable 1 with a discriminating function mainly includes a cable main body 30, a search conductor 4, and a conductor coating 5.

  The cable main body 30 is a cable in which the core 2 is covered with a non-conductive core 3. In this embodiment, the three cores 2 are covered with the core 3. Here, the core wire 2 is an electric wire composed of an electric conductor, and the periphery thereof may be covered with an insulator. The core coating 3 is an insulating protection coating that covers and protects the outer peripheral surface of the core 2 and is made of a material (for example, a rubber material) having predetermined flexibility and strength. Such a cable main body 30 has a configuration equivalent to an existing or existing control cable.

  The search conductor 4 is an electric conductor disposed along the longitudinal direction of the cable main body 30, and is disposed over the entire circumference of the cable main body 30. That is, it is made of a metal film such as copper, and covers the outer peripheral surface of the core coating 3 of the cable body 30 and is laid without any gap in the longitudinal direction of the core coating 3.

  The conductor coating 5 is a non-conductive coating that covers the search conductor 4. That is, it is an insulating protective coating that covers and protects the outer peripheral surface of the exploration conductor 4, and is made of a material (for example, a rubber material) having predetermined flexibility, strength, and the like, similarly to the core coating 3. . The hardness of the conductor coating 5 is set so that the measuring terminals 11 and 12 of the cable discriminating device 10 can be pushed (inserted). Alternatively, a plurality of notches or opening / closing windows (terminal insertion portions) into which the measurement terminals 11 and 12 can be inserted may be continuously provided along the longitudinal direction of the conductor coating 5. Then, when the measuring terminals 11 and 12 are pushed into the conductor coating 5, the measuring terminals 11 and 12 and the search conductor 4 are electrically connected. In other words, the two measurement terminals 11 and 12 are energized via the search conductor 4.

  Here, the search conductor 4 is not electrically connected to the circuit, but is electrically insulated from the outside. That is, when the cable 1 with the discriminating function is used, only the cable main body 30 is connected to the device or grounded, and the search conductor 4 is not electrically connected to the outside or grounded. Absent. As described above, the exploration conductor 4 is attached to the cable main body 30 only in an incidental manner.

  On the other hand, the cable determination device 10 is a device for determining a specific cable from a plurality of cables, and mainly includes a first measurement terminal 11, a second measurement terminal 12, and a device main body 13. Prepare.

  The first measurement terminal 11 is a terminal that is pushed into an arbitrary first measurement position of the conductor coating 5 of the cable 1 with a discriminating function and is electrically connected to the search conductor 4. That is, as shown in FIG. 4, both ends 11a and 11b are clip-shaped (tongue-shaped) and pointed, as shown in FIG. Then, both ends 11a and 11b are inserted into arbitrary positions of the conductor coating 5 with the cable 1 with the discriminating function interposed between the first measuring terminals 11, thereby electrically conducting with the exploration conductor 4.

  The second measurement terminal 12 is a terminal that is pushed into an arbitrary second measurement position of the conductor coating 5 of the cable 1 with a discriminating function and is electrically connected to the exploration conductor 4. It has the same configuration.

  Further, the first measurement terminal 11 is connected to one end of the first test lead 111, and the other end of the first test lead 111 is connected to the measurement unit 131 in the device main body 13. Similarly, the second measurement terminal 12 is connected to one end of a second test lead 112, and the other end of the second test lead 112 is connected to a measurement unit 131 in the device body 13. Further, in this embodiment, the test leads 111 and 112 have a length equal to or longer than that of the cable 1 with the discriminating function, and can be measured anywhere on the cable 1 with the discriminating function. On the other hand, the lengths of the test leads 111 and 112 may be shortened, and one of the test leads 111 and 112 may be connected to the cable 1 with the discriminating function and the other may be grounded.

  Further, in this embodiment, the test leads 111 and 112 are housed in the apparatus main body 13 and can be freely inserted and removed. On the other hand, the test leads 111 and 112 may be made detachable from the apparatus main body 13 so that they can be carried and stored separately from the apparatus main body 13.

  The device body 13 has a negative terminal and a positive terminal, a first test lead 111 (first measuring terminal 11) is connected to the negative terminal, and a second test lead 112 (second measuring terminal 12) is connected to the positive terminal. ) Is connected. In addition, the device main body 13 includes a measurement unit 131 and an output unit 132.

  The measurement unit 131 is connected to the first measurement terminal 11 and the second measurement terminal 12 via the test leads 111 and 112, and measures an electrical value between the first measurement position and the second measurement position. Is measured. That is, similarly to the tester, this is an electric measuring instrument that measures an electric value including a voltage value, a current value, and an electric resistance value between two points where the measuring terminals 11 and 12 are in contact.

  For example, as shown in FIG. 3, a current I is caused to flow while the measurement terminals 11 and 12 sandwich the measurement positions P1 and P2 of the cable 1 with the discrimination function, respectively, so that the first measurement position of the exploration conductor 4 is measured. The resistance value (electrical value) between P1 and the second measurement position P2 is measured. Similarly, a current value between the measurement positions P1 and P2 is measured by applying a voltage.

  Here, the apparatus main body 13 is provided with a display unit (not shown) for displaying a measurement value by the measurement unit 131. Further, it is possible to select which value to measure from among electric values including a voltage value, a current value, and an electric resistance value.

  The output unit 132 determines whether the electrical value measured by the measuring unit 131 is a predetermined value, and outputs a determination result. That is, it is determined whether or not the value measured by the measuring unit 131 is a value (predetermined value) to be measured between two points of the cable 1 with the same discriminating function. For example, “discrimination is good” is output, and if the value is not a predetermined value, “discrimination is not performed” is output by a sound or a lamp.

  For example, as described above, when the resistance value between the measurement positions P1 and P2 is measured, if the resistance value is between the measurement positions P1 and P2 of the cable 1 with the same discrimination function, the value to be measured is almost zero. Therefore, if the measured value by the measuring unit 131 is substantially zero, “discriminating good” is output, and if the measured value by the measuring unit 131 is not substantially zero, “discriminating failure” is output. Similarly, when a voltage is applied, it is determined whether or not the measured value by the measuring unit 131 is a predetermined current value (predetermined value) (non-zero or zero) and output. In this manner, it is determined whether or not the two measuring terminals 11 and 12 are pushed into the same cable 1 with the discriminating function, and output.

  Next, the operation of the cable 1 with the discriminating function having such a configuration and the cable discriminating apparatus 10, a cable discriminating method by the cable discriminating apparatus 10, and the like will be described.

  Here, as shown in FIG. 5, one end of the control cable 1A, 1B, 1C constituted by the cable 1 with the discriminating function is connected to the control panel (equipment) 202 in the substation building 201, and the control cable 1A, 1B and 1C are laid in a cable pit 205 below the floor G, and the other end is connected to an operation box 204 of a circuit breaker (device) 203. Then, a case where the first control cable 1A is determined and replaced in the cable pit 205 will be described. The length of the cable pit 205 is several hundred meters.

  First, on the control panel 202 side, since one end is connected to the control panel 202, an operator can easily and reliably recognize and identify the first control cable 1A. One end of the first control cable 1A (arbitrary first measurement position) is inserted into the conductor coating 5 with the first measurement terminal 11 interposed therebetween, and the first measurement terminal 11 is electrically connected to the search conductor 4. (First conduction step). Here, the first measurement terminal 11 (first test lead 111) may be connected to the ground, or may be connected to the negative terminal of the apparatus main body 13. Thus, in the present invention, the ground connection is also included in the connection to the measurement unit 131.

  Next, in the cable pit 205, the conductor coating 5 is placed at the center of any of the control cables 1A, 1B, and 1C (the site in the pit 205, an arbitrary second measurement position) with the second measurement terminal 12 interposed therebetween. To electrically connect the second measuring terminal 12 with the search conductor 4 (second conducting step). In this state, the measurement unit 131 of the cable determination device 10 measures an electrical value between the measurement terminals 11 and 12 (between the first measurement position and the second measurement position) (measurement step). For example, the electric resistance value is measured as described above.

  Subsequently, the output unit 132 determines whether the measured electrical value is a predetermined value (determination step). As a result, when the value is not the predetermined value, that is, when the first control cable 1A is not sandwiched between the second measurement terminals 12, the output unit 132 outputs “No determination”. Similar measurement and determination are performed with the second measurement terminal 12 interposed between the control cables 1A, 1B, and 1C.

  When the measurement is performed with the second measurement terminal 12 interposed between the first control cable 1A and the output section 132 outputs “good discrimination”, the operator can use the cable 1 with the discrimination function in the first control cable 1A. Can be determined as the control cable 1A. Further, when the first control cable 1A is determined at a position other than the cable pit 205, for example, at the operation box 204 side (arbitrary second measurement position) on the other end side of the first control cable 1A, Similarly, measurement and determination are performed on the control cables 1A, 1B, and 1C.

  As described above, according to the cable 1 with the discriminating function, the cable discriminating apparatus 10 and the cable discriminating method, the two measurement terminals 11 and 12 are pushed into the conductor coating 5 of the cable 1 with the discriminating function to measure the electric value. By simply performing, the cable 1 with the specific and desired discriminating function can be easily and quickly discriminated and identified from the plurality of cables 1 with the discriminating functions. Moreover, by pushing the measuring terminals 11 and 12 into arbitrary positions in the longitudinal direction of the conductor coating 5 of the cable 1 with the discriminating function, the cable 1 with the discriminating function can be discriminated at any position. As a result, it is possible to avoid a power failure due to erroneous disconnection of the cable 1 with a discrimination function, and to reduce the time and labor required for substation work and troubleshooting.

  In addition, the exploration conductor 4 and the conductor coating 5 are provided over the entire circumferential direction of the cable body 30, and the measurement terminals 11 and 12 are connected to the exploration conductor 4 no matter where the measurement terminals 11 and 12 are pushed into the conductor coating 5. It becomes electrically conductive. That is, since the measurement can be performed at any position in the circumferential direction as well as in the longitudinal direction of the cable 1 with the discriminating function, the cable 1 with the discriminating function can be determined more easily and quickly.

  On the other hand, the determination result as to whether or not the electric value measured by the measurement unit 131 is a predetermined value, that is, the cable 1 with the discrimination function into which the measurement terminals 11 and 12 are pushed in is the same cable 1 with the discrimination function. Since the presence or absence of the cable is output from the output unit 132, anyone can easily and quickly determine the cable 1 with the determination function.

(Embodiment 2)
FIG. 6 is a cross-sectional view (a cross-sectional view in a plane perpendicular to the axis) showing the cable 1 with a discriminating function according to this embodiment. In this embodiment, the exploration conductor 4 and the conductor coating 5 constitute an exploration electric wire 50 integrally, and the exploration electric wire 50 is disposed along the longitudinal direction of the cable main body 30. 1 are different from those of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  That is, the exploration electric wire 50 is formed of an existing or existing covered electric wire, and the outer periphery of the linear and conductive exploration conductor 4 is covered with the electrically insulating conductor coating 5. Then, such an exploration electric wire 50 is provided along the longitudinal direction of the cable main body 30. Here, any arrangement method may be used. For example, the exploration electric wire 50 is attached to the cable main body 30 by a fastening means such as a band, or the exploration electric wire 50 is connected by a joining means such as an adhesive. It may be joined to the main body 30.

  According to such an embodiment, since the integral exploration wire 50 is merely provided in the cable main body 30, the cable 1 with the discriminating function can be used by using an existing or off-the-shelf cable or wire. It can be easily manufactured. For example, by simply arranging the existing and ready-made exploration wires 50 on the existing and ready-made cable main body 30, the cable can be manufactured easily and at low cost.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like within a range not departing from the gist of the present invention, the present invention is not limited thereto. Included in the invention. For example, in the above-described embodiment, although the output unit 132 is provided in the device main body 13 of the cable determination device 10, the cable determination device 10 may be configured with an existing or existing tester without the output unit 132. Good.

  In the first embodiment, the conductor 4 for search, which is a conductive paint, is laid and applied on the entire peripheral surface of the cable body 30, and the conductor 4 for search is covered with the conductor coating 5, which is a non-conductive paint. You may. Further, in the second embodiment, as shown in FIG. 7, an electric wire-shaped search conductor 4 may be provided in contact with the cable body 30, and the search conductor 4 may be covered with the conductor coating 5.

DESCRIPTION OF SYMBOLS 1 Cable with discrimination function 2 core wire 3 core wire covering 30 Cable main body 4 Search conductor 5 Conductor coating 50 Search wire 10 Cable discriminator 11 First measurement terminal (measurement terminal)
12 Second measurement terminal (measurement terminal)
13 Main unit 131 Measuring unit 132 Output unit

Claims (4)

A cable body whose core is covered with a non-conductive core coating,
A conductive search conductor that covers the outer peripheral surface of the core coating and is disposed without a gap along the longitudinal direction of the core coating ,
A non-conductive conductor coating covering the exploration conductor,
A cable with a discriminating function, wherein when the measuring terminal is pushed into the conductor coating, the measuring terminal and the search conductor are electrically connected. A first measurement terminal that is pushed into an arbitrary first measurement position of the conductor coating of the cable with the determination function according to claim 1 and is electrically connected to the search conductor.
A second measurement terminal that is pushed into any second measurement position of the conductor coating and is electrically connected to the search conductor;
A measurement unit that is connected to the first measurement terminal and the second measurement terminal and measures an electrical value between the first measurement position and the second measurement position;
A cable discriminating device comprising: The cable discriminating apparatus according to claim 2 , further comprising: an output unit configured to determine whether the electrical value measured by the measuring unit is a predetermined value, and to output a determination result. A first conduction step of pushing a first measurement terminal into an arbitrary first measurement position of the conductor coating of the cable with the discrimination function according to claim 1 to electrically conduct with the search conductor,
A second conduction step of pushing a second measurement terminal into an arbitrary second measurement position of the conductor coating to electrically conduct with the search conductor;
A measurement step of measuring an electrical value between the first measurement position and the second measurement position;
A determining step of determining whether the electrical value measured in the measuring step is a predetermined value,
A cable discriminating method comprising:

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