Wire core identifier for multiple wires and wire core specification method

Abstract

To provide a technique allowing a user to intuitively and accurately perform wire core specification operations even if the user is not familiar with using a tester for measuring a resistance value.SOLUTION: A wire core identifier for multiple wires comprises: a plurality of conductive routes whose one ends are connected in parallel with each other; connection terminal parts connected respectively to the other ends of the plurality of conductive routes; and an identification part for identifying the plurality of conductive routes. The plurality of conductive routes include: a first conductive route on which a resistor is not arranged; and a plurality of second conductive routes on each of which the resistor is arranged. The identification part of the first conductive route includes display to which a wiring number 0 is applied, and the identification parts of the plurality of second conductive routes include displays to which wiring numbers of natural numbers in order from 1 are applied. Resistance values are set to the resistors of the plurality of second conductive routes such that an integer read value obtained by discarding digits after the decimal point when the resistance value is represented by kilo-ohm is the wiring number.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a technique for a multi-wire fiber identifier suitable for use in fiber identification work to identify one end of a plurality of installed fiber conductors and the other end that is paired with the other end. [Background technology]

[0002] Patent Document 1 discloses a technique for identifying identical wiring when wiring multiple wires between distant locations. The device of this technique includes a turnaround unit and a measurement unit. The turnaround unit has multiple terminals connectable to one end of a wire bundle, and the resistance value between any two of the multiple terminals is set to be different from the resistance value between any other two terminals. With this configuration, by connecting one end of the multiple electrical wirings to multiple terminals of the turnaround unit and connecting the other ends of the multiple electrical wirings to a measurement unit, and measuring the resistance value between any two of the multiple terminals of the measurement unit with a tester or the like, it is possible to determine which terminal of the measurement unit is connected to which terminal of the turnaround unit by electrical wiring. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-20188 Summary of the Invention [Problem to be solved by the invention]

[0004] Elevator intercom wiring consists of multiple core wires running from the control room to the machine room. It is sometimes necessary to identify the paired ends of these multiple core wires. The technology of Patent Document 1 could be applied to this task. The technology of Patent Document 1 identifies paired connection combinations by reading the resistance value between any two terminals measured with a tester or other device. However, the technology of Patent Document 1 requires the user to memorize the relationship between the measured resistance value and the paired connection combination or to refer to a document on the spot, which may lead to human error when reading the tester and identifying the combination. As such, the technology of Patent Document 1 is not user-friendly for users unfamiliar with testers, and there is room for improvement.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide a technology that enables even a user who is unfamiliar with using a tester that measures resistance values to intuitively and accurately identify the core wire. [Means for solving the problem]

[0006] The multi-wire core identifier disclosed herein is connected to one end of each of a plurality of cores under test and identifies the other end paired with one end based on the measurement of the resistance between two of the other ends of the plurality of cores. The multi-wire core identifier includes a plurality of conductive paths whose one ends are connected in parallel to each other, connection terminals connected to the other ends of the plurality of conductive paths and configured to be freely connectable to one end of each of the plurality of cores, and an identification unit for identifying the plurality of conductive paths. The plurality of conductive paths include a first conductive path without a resistor and a plurality of second conductive paths each with a resistor. In the first conductive path, the identification unit includes a marking with a wiring number starting from 0. In each of the plurality of second conductive paths, the identification unit includes a marking with a wiring number assigned in natural numbers starting from 1, and the resistors have resistance values set so that the wiring number is an integer reading obtained by truncating the decimal point when the resistance value is expressed in kiloohms.

[0007] The core wire identification method of the present disclosure is a core wire identification method that uses the above-mentioned multi-wire core wire identifier to identify the other end that pairs with one end of each of multiple core wires being inspected, and includes a connection step of connecting the connection terminal portion of the multi-wire core wire identifier to one end of each of the multiple core wires, and a measurement step of measuring the resistance value between any two of the other ends of each of the multiple core wires with a tester set to the kilohm range, and identifying one end that pairs with the any two ends based on an integer reading obtained by truncating the measured value to the nearest integer. [Effects of the Invention]

[0008] According to the technology disclosed herein, the wiring numbers corresponding to multiple conductive paths match the integer read values of the resistance values, so even users who are unfamiliar with using testers to measure resistance values can intuitively and accurately identify the core wires based on the integer read values read from the tester. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is an external view of a fiber identification device according to an embodiment; [Figure 2] FIG. 2 is a diagram showing the circuit configuration of a board in the optical fiber identification device according to the embodiment. [Figure 3] 10 is a flowchart showing the procedure of a user's work in a measurement process. [Figure 4] FIG. 10 is a diagram showing the relationship between wiring combinations and resistance values. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment will be described with reference to the drawings. Note that elements common to the various drawings are given the same reference numerals and redundant explanations will be omitted.

[0011] Embodiment 1. External configuration of the fiber optic identifier according to the embodiment FIG. 1 is an external view of a fiber optic identifier according to an embodiment. Fiber optic identifier 100 is a device used in fiber optic identification work to identify which end of a plurality of fiber optics in a cable installed in a facility or the like corresponds to the other end. The facility may be, for example, an elevator facility installed in a building, and the cable may be an intercom cable installed between a machine room and a control room. In fiber optic identification work, fiber optic identifier 100 is connected to one end of the plurality of fiber optics to be inspected.

[0012] As shown in FIG. 1 , the fiber optic identifier 100 includes a circuit board 102, a case 104, a plurality of wires 106, a plurality of clips 108, and a plurality of labels 110. The circuit board 102 is, for example, a universal circuit board. The case 104 covers the front and back surfaces of the circuit board 102 to protect the circuit board 102 from contact. One end of each of the plurality of wires 106 is connected to a connector 14 mounted on the circuit board 102. The other ends of the plurality of wires 106 are connected to a plurality of clips 108, respectively. The plurality of clips 108 function as connection terminals that detachably connect to one ends of the plurality of fiber optics to be inspected. The plurality of clips 108 are, for example, alligator clips. A plurality of labels 110 are attached to the plurality of wires 106 near the connection points with the clips 108. The plurality of labels 110 function as identification devices bearing unique wiring numbers assigned to each of the plurality of wires 106. The wiring numbers are natural numbers assigned in order from 0 and 1.

[0013] 2. Circuit configuration of the fiber optic identifier according to the embodiment 2 is a diagram showing the circuit configuration of a board in a fiber optic cable identifier according to an embodiment. As shown in this figure, a board 102 of the fiber optic cable identifier 100 includes a plurality of conductive circuits 10, a plurality of resistors 12, and a connector 14. One ends of the plurality of conductive circuits 10 are connected in parallel with each other, and the other ends are each connected to a terminal of the connector 14.

[0014] The plurality of conductive circuits 10 includes a first conductive circuit 10(0) in which the resistor 12 is not arranged, and n second conductive circuits 10(k) (k = 1, 2,... n; n is a natural number of 2 or more) in which the resistors 12(k) are respectively arranged. In the example shown in FIG. 2, a circuit including nine second conductive circuits 10(k) (k = 1, 2,... 9) is illustrated.

[0015] The first conductive circuit 10(0) is connected to the wiring 106 with the wiring number "0" via the connector 14. Also, the second conductive circuit 10(k) is connected to the wiring 106 with the wiring number "k" via the connector 14, respectively. The first conductive circuit 10(0) including the wiring 106 with the wiring number "0" and the clip 108 is also referred to as the "first conductive path" hereinafter. Also, each of the second conductive circuits 10(k) including the wiring 106 with the wiring number "k" and the clip 108 is also referred to as the "second conductive path", respectively. Also, in the following description, the first conductive path and the plurality of second conductive paths are collectively referred to as the "plurality of conductive paths".

[0016] The resistor 12(k) is configured by mounting, for example, a 1 / 4W carbon resistor on the substrate 102. The resistance values Rk of the resistors 12(k) are set to different values. Specifically, the resistance value Rk [kΩ] of the resistor 12(k) is set to be included in the allowable error range of k - 0 [kΩ] ≤ Rk < k + 0.5 [kΩ]. According to such a resistance value Rk, the integer reading value obtained by truncating the decimal part when displayed in kiloohms is "k".

[0017] 3. Core identification method using the core comparator of the embodiment Next, a core identification method using the core comparator 100 according to the embodiment will be described along with a specific example. 3-1. Preparation step In the preparation step, the user prepares a core comparator 100 and a tester capable of measuring resistance values as devices to be used for the core identification work. There is no limitation on the type of the tester. Here, for example, a digital multimeter (SD770 manufactured by SANWA) is prepared as the tester.

[0018] Next, the user identifies the multiple cores to be inspected. Here, the example shows the task of identifying pairs of four 6V single-pole cores TL1, TL2, TL3, and TL4 laid between the machine room and the control room as intercom wiring used in an elevator. Note that there are no limitations on the type or number of the multiple cores to be inspected. In other words, the multiple cores may be, for example, multiple 6V multi-pole cores.

[0019] Next, the user disconnects both ends of the identified core wires TL1, TL2, TL3, and TL4 from the circuit. Note that simply removing voltage from the circuit may cause sneak current to flow, so it is preferable to disconnect the core wires from the circuit.

[0020] 3-2.Connection process In the connection step, the user connects the required number of wires to one end of each of the multiple wires in numerical order, starting with wire number "0" and wire number "1" of the wire identification device 100. Here, clips 108 of wire numbers 0, 1, 2, and 3 of the wire identification device 100 are connected to one end of each of the four wires.

[0021] 3-3. Measurement process In the measurement step, the user measures the resistance between any two ends of the other ends of the multiple core wires. Figure 3 is a flowchart showing the procedure performed by the user in the measurement step.

[0022] In step S100, the user sets the tester's measurement range to kiloohms (kΩ) and places the tester's first and second probes on any two ends of the core wires TL1, TL2, TL3, and TL4 to measure the resistance (kΩ). The user then rounds down the measured value to the nearest integer and reads it as an integer readout. The user then identifies the wiring combination that results in a 1 kΩ integer readout. Note that the only combination that results in a 1 kΩ resistance is the combination of wire numbers "0" and "1," so the user can identify the wiring combination that results in a 1 kΩ resistance as wire numbers "0" and "1."

[0023] In step S102, the user applies the second probe to another wire while keeping the first probe connected. In step S104, the user determines whether the tester's integer reading is 2 kΩ. The only combination that results in 2 kΩ is the combination of wire numbers "0" and "2." Therefore, if the determination is successful, in step S106, it can be determined that the wire to which the first probe is connected is wire number "0."

[0024] On the other hand, if the determination in step S104 is not successful, the process proceeds to step S108, where the user determines whether the tester's integer reading is 4 kΩ. The only combination that results in 4 kΩ is the combination of wire numbers "1" and "3." Therefore, if the determination here is successful, in step S110, it can be determined that the wire to which the first probe is connected is wire number "1," and therefore it can be determined that the original connection destination of the second probe is wire number "0."

[0025] When the wire with wire number "0" is identified in step S106 or step S110, the process proceeds to step S112. In step S112, the user connects a first probe to the other end of the wire identified as wire number "0" and sequentially measures the resistance values when the second probe is applied to the other ends of the other wires.

[0026] In step S114, the user identifies the integer read values of the measured resistance as the wire numbers of each wire. Specifically, the wires with integer read values of 1 kΩ, 2 kΩ, and 3 kΩ are identified as wire numbers "1," "2," and "3," respectively.

[0027] 4. Functions and Effects of the Fiber Identifier of the Embodiment According to the optical fiber identification device 100 configured as above, the following actions and effects can be obtained.

[0028] The resistance value Rk [kΩ] of the resistor 12(k) of the core wire comparator 100 is set to be included in the error range of k - 0 [kΩ] ≦ Rk < k + 0.5 [kΩ]. According to such a resistance value Rk, the integer reading value of the resistance value Rk becomes the wiring number "k" of the second conductive circuit 10(k). Therefore, even for a user who is not familiar with using a tester to measure the resistance value, the core wire identification operation can be performed intuitively and accurately.

[0029] Also, the resistance value Rk [kΩ] of the resistor 12(k) is set with a tolerance upper error of "+0.5 [kΩ]" and a tolerance lower error of "-0 [kΩ]". According to such a setting of the tolerance upper error, it is possible to avoid the occurrence of carry-over to the integer digit when measuring the resistance values of any two wirings. Since the resistance value Rk does not become small during use, the tolerance lower error is set to "-0".

[0030] Also, the resistance value Rk of the resistor 12(k) is set to a resistance value on the order of kilo-ohm [kΩ]. Generally, the resistance value of the wiring 106 is about 50Ω, and since other resistance values such as the internal resistance of the core wire comparator 100 and the contact resistance of the contacts are 1Ω or less, if these resistance values are sufficiently small with respect to the resistance value Rk, the influence of the error can be reduced. In this regard, for a low resistance with Rk < 1kΩ, there is a possibility that the resistance value will increase significantly due to the resistance value of the wiring and affect the measurement result. On the other hand, for a high resistance with Rk > 10kΩ, it may be difficult to distinguish from another circuit, or depending on the type of tester used, the measurement range may be exceeded. According to the core wire comparator 100 of the present embodiment, the above problems can be solved by adopting a resistance value on the order of kilo-ohm [kΩ] for the resistance value Rk.

[0031] Since the substrate 1 of the core wire comparator 100 is covered with the case 104, it is possible to protect the mounted components and prevent short circuits in the circuit.

[0032] 5. Variation of the core wire comparator according to the embodiment The optical fiber identification device 100 according to the embodiment may adopt the following modified forms.

[0033] 5-1. Wiring 106 There is no limitation on the number and length of the multiple wirings 106.

[0034] 5-2. Clip 108 There are no limitations on the shape and structure of the clip 108 as long as it is configured to be freely connectable to the core wire to be inspected.

[0035] 5-2. Label 110 The label 110 is not limited in shape, structure, or placement as long as it is configured to identify the wire number of the wiring near the clip 108 connected to the core wire under test. For example, the label 110 may be attached to the clip 108.

[0036] 6. Modification of the fiber optic identification method using the fiber optic identifier of the embodiment The method for identifying a core wire using the core wire identifier 100 of the embodiment may employ the following modified aspects.

[0037] In the core wire identification method of the above-described embodiment, the measurement step first identifies the wire with wire number "0" from among multiple wires, and then measures the resistance value of the combination of wire "0" with other wires, thereby identifying the integer read value of the tester as the wire number. However, the core wire identification method is not limited to the above method, and other methods for identifying wire numbers using combinations of wires may also be used.

[0038] FIG. 4 is a diagram showing the relationship between wiring combinations and resistance values. FIG. 4 also shows a quick reference table showing the relationship between each combination of two wirings and their resistance values. According to this diagram, even if the wiring number identified initially is "No. 1," it is possible to identify the combination of wiring numbers for the other wirings by searching the quick reference table in FIG. 4 for the detected resistance values for the combinations of wiring "No. 1" and other wirings.

[0039] A concealing member may be attached to the portion of the tester's measurement value display that displays the decimal point. With such a tester, only the integer portion of the measurement value is visible, preventing misreading of the integer reading from the tester's measurement value.

[0040] 6.Other Although the preferred embodiments have been described in detail above, the present disclosure is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the claims.

[0041] Various aspects of the present disclosure are summarized below as appendices.

[0042] (Appendix 1) A multi-wire core identifier that is connected to one end of each of a plurality of core wires to be inspected, and identifies the other end paired with the one end based on a measurement result of a resistance value between two of the other ends of the plurality of core wires, a plurality of conductive paths, one end of which is connected in parallel to one another; a connection terminal portion connected to the other end of each of the plurality of conductive paths and configured to be freely connected to the one end of each of the plurality of core wires; an identification unit for identifying the plurality of conductive paths; The plurality of conductive paths are a first conductive path in which no resistor is disposed; a plurality of second conductive paths in which the resistors are disposed; In the first conductive path, The identification unit includes a marking having a wiring number of 0, In each of the plurality of second conductive paths, the identification portion includes a marking on which wiring numbers are assigned in natural numbers in numerical order starting from 1, A multi-wire core wire identifier in which the resistance value of the resistor is set so that the wiring number is the integer reading obtained by rounding down the decimal point when the resistance value is expressed in kiloohms. (Appendix 2) In each of the plurality of second conductive paths, The resistor is set so that the tolerance of the resistance value ranges from the integer reading of -0 kΩ to the integer reading of +0.5 kΩ. A multi-wire core identifier as described in Appendix 1. (Appendix 3) the conductive path includes a wiring and a conductive circuit of a substrate to which the wiring is connected; The resistor is mounted on the substrate. A multi-wire core wire identifier as described in Appendix 1 or Appendix 2. (Appendix 4) The identification portion includes a label attached to the wiring. A multi-wire core identifier as described in Appendix 3. (Appendix 5) 5. The multi-wire core identifier according to claim 3 or 4, further comprising a case covering the front and back surfaces of the substrate. (Appendix 6) A core wire identification method for identifying one end of each of a plurality of core wires to be inspected and a paired end of the other end of the multiple core wires using the multiple core wire identifier according to any one of Supplementary Note 1 to Supplementary Note 5, a connecting step of connecting the connection terminal portion of the multi-wire wire identifier to one end of each of the plurality of wires; a measuring step of measuring a resistance value between any two of the other ends of each of the plurality of core wires with a tester set to a kilo-ohm range, and identifying one end paired with the any two ends based on an integer reading obtained by truncating the decimal point of the measurement value; A core wire identification method comprising: (Appendix 7) The connecting step includes: The connection terminal portions are connected to one ends of the plurality of core wires in numerical order, starting from the conductive path corresponding to wiring number 0, The measuring step includes: Based on the integer reading, identify the other end that is paired with the one end corresponding to the wiring number 0; The integer reading value between the other end portion paired with the one end portion corresponding to the wiring number 0 and the other other end portion is identified as the wiring number corresponding to the one end portion paired with the other other end portion. A method for identifying a core wire as described in Appendix 6. [Explanation of symbols]

[0043] 10 conductive circuit, 10(0) first conductive circuit, 10(k) second conductive circuit, 12 resistor, 14 connector, 100 wire identifier, 102 board, 104 case, 106 wiring, 108 clip, 110 label

Claims

1. a multi-wire core identifier connected to one end of each of a plurality of cores to be inspected, and identifying the other end paired with the one end based on a measurement result of a resistance value between two of the other ends of the plurality of cores, a plurality of conductive paths, one end of which is connected in parallel to one another; a connection terminal portion connected to the other end of each of the plurality of conductive paths and configured to be freely connected to the one end of each of the plurality of core wires; an identification unit for identifying the plurality of conductive paths; The plurality of conductive paths are a first conductive path in which no resistor is disposed; a plurality of second conductive paths in which the resistors are disposed; In the first conductive path, The identification portion includes a marking having a wiring number of 0, In each of the plurality of second conductive paths, the identification portion includes a marking on which wiring numbers are assigned in natural numbers in numerical order starting from number 1, A multi-wire core wire identifier in which the resistance value of the resistor is set so that the wiring number is the integer reading obtained by rounding down the decimal point when the resistance value is expressed in kiloohms.

2. In each of the plurality of second conductive paths, The resistor is set so that the tolerance of the resistance value ranges from the integer reading of −0 kΩ to the integer reading of +0.5 kΩ. The multi-wire core identifier according to claim 1.

3. the conductive path includes a wiring and a conductive circuit of a substrate to which the wiring is connected; The resistor is mounted on the substrate.

3. The multi-wire core identifier according to claim 1 or 2.

4. The identification portion includes a label attached to the wiring. The multi-wire core identifier according to claim 3.

5. 4. The multi-wire core identifier according to claim 3, further comprising a case for covering the front and rear surfaces of the substrate.

6. 2. A method for identifying a core wire by using the multi-wire core wire identifier according to claim 1, the method comprising: a connecting step of connecting the connection terminal portion of the multi-wire wire identifier to one end of each of the plurality of wires; a measuring step of measuring a resistance value between any two of the other ends of each of the plurality of core wires with a tester set to a kilo-ohm range, and identifying one end paired with the any two ends based on an integer reading obtained by truncating the decimal point of the measurement value; A core wire identification method comprising:

7. The connecting step includes: the connection terminal portions are connected to one ends of the plurality of core wires in numerical order, starting from the conductive path corresponding to wiring number 0; The measuring step includes: Based on the integer reading, identify the other end that is paired with the one end corresponding to the wiring number 0; The integer reading value between the other end portion paired with the one end portion corresponding to the wiring number 0 and the other other end portion is identified as the wiring number corresponding to the one end portion paired with the other other end portion. The method for identifying a core wire according to claim 6.

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