JP2013191335A - Method and device for checking core wire connection of multi-core cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable confirmation work without distributing personnel on the equipment body side, at the necessity of confirming the core wire connection of an intermediate cable before electric conduction, in such a case that the equipment body is remote from an operation room.SOLUTION: Relay interfaces RI1, RI2 are connected to the plugs at of both ends of an intermediate cable CC. The line of each core wire is divided into four, i.e. A, B, C and D. Two wires A, B are connected to a communication line, whereas two wires C, D are connected to a measurement circuit. By switching a relay of each line on and off by personal computers PC1, PC2, conduction check and insulation check are performed for each core wire.

Description

  The present invention relates to a multi-core cable core line connection check method and apparatus for checking whether or not a plug at both ends and each core wire of an intermediate cable are correctly connected for a multi-core cable.

  Large electric devices are generally composed of a body part that has the original functions of the equipment and an operation part that operates the equipment. However, depending on the equipment, the operation part and the body part are installed at a distance. There is a case. For example, lighting, communication equipment, air conditioning equipment, etc. in a ship are distributed and arranged in various places in the ship, and these are generally operated in a central operation room. In such a case, since there is a wall or a distance between the operation part and the main body part, it is common to connect them with a multi-core intermediate cable having a length corresponding to the distance. The intermediate cable is provided with multi-core plugs at both ends, and the operation part and the main body part are connected by inserting one end into the operation part (master) outlet and the other end into the main body part (slave) outlet.

  The multi-core cable is usually composed of several tens of core wires depending on the device, and about 100 core wires when there are many. The plug is arranged in a predetermined order on a planting surface made of a circular or rectangular insulating material provided in a metal casing, and the surrounding casing is provided with a key or the like in the fitting portion, It is designed so that it can only be inserted in a certain direction with respect to the other party's outlet.

  When a device is newly manufactured and installed, or when repairs such as replacement of the core wire are performed, before turning on the power, each core wire is attached to a predetermined pin fixed to the planting surface of the plugs on both sides. It is necessary to confirm that the connection is correct.

  This check is done in two ways: for every core wire, whether there is continuity between the pins on the same position on both sides, and whether there is continuity between the core wire to be checked and the other core wire or the surrounding grounding part. Need to do. Hereinafter, this is referred to as “continuity check” and “insulation check”.

This operation will be described with reference to FIG. For convenience of explanation, here, four core wires C1, C2, C3, and C4 are used.
As shown in (a), first, the corresponding pins of the plugs on both sides of the core C1 are connected by a line, and a continuity check is performed by the tester T. If confirmation is not obtained, the core wire is changed and the confirmed core wire is used as a reference.
(B) Next, another core wire C2 is selected and its continuity is checked. The tester T is connected to the reference core wire C1 and the core wire C2 to be checked on the joint J1 side, and the joint J2 side on the opposite side shorts the pins of the two core wires. Since the continuity of the core wire C1 has been confirmed in advance, if the continuity is obtained with this, the continuity of the core wire C2 has also been confirmed.
Subsequently, a similar check is performed between the core wires C1 and C3. Furthermore, a check is performed between the core wires C1 and C4, and if continuity is obtained, all four continuity checks are completed.
(C) Subsequently, an insulation check is performed. In order to check whether the core wire C1 and the core wire C2 are insulated, the plug pin on the joint J2 side is not short-circuited at all, and the current between the core wire C1 and the core wire C2 is measured on the joint J1 side, Check that the current value is “0”, that is, there is no conduction. The same test is performed on all four core combinations (C1 and C3, C1 and C4, C2 and C3, C2 and C4, and C3 and C4) to confirm insulation.
This completes the continuity check and insulation check of the four core wires.

  Conventionally, such work has been done by placing workers on the operation room side and the equipment body side and contacting them by telephone, etc., but requires at least two people and the equipment side is high. In many cases, the working environment is poor due to high temperature, etc. Also, if the operation room is separated from the main body of the equipment and there is a wall in the middle, it will be complicated to communicate between workers, and a cable with 100 core wires will be used. There are problems such as short circuit between pins, change and removal of the pins, and a lot of manpower, which easily causes work mistakes, and the connection check not only takes a long time but also has insufficient reliability.

  In Patent Document 1, when a multi-core cable is newly manufactured, the core wires are aligned so as to correspond to the pin arrangement, and the continuity check is performed by connecting the cutter to the continuity check terminal while cutting the core wires. However, it cannot be applied to repair of ready-made cables.

JP-A-7-201234

  The present invention eliminates such problems, eliminates the labor on the equipment body side by installing personal computers on both the operation room side and the equipment body side, and performs the work only on the operation room side to ensure accurate connection. It is an object of the present invention to provide a method and an apparatus for checking a core connection of a multi-core cable in which checking is efficiently performed.

  The present invention according to claim 1 is a multi-core cable for confirming the connection between the plugs at both ends of the multi-core cable connecting the operation portion and the main body portion of the electrical equipment and the core wires of the intermediate cable and the insulation between the core wires. A core connection check method, wherein a master side relay interface to which one end of the multicore cable is connected, a slave side relay interface to which the other end of the multicore cable is connected, and a master side relay interface Master side personal computer and measuring device, and slave side personal computer connected to the slave side relay interface, each circuit in the master side relay interface and slave side relay interface is for control, two lines for each core Branches into a total of 4 lines, 2 lines, The multi-core cable is characterized in that each of the circuits branched according to the instructions of the slave-side personal computer can be turned on and off individually, so that two core wires of the cable are connected to the measuring device and the connection check and insulation check are performed. This is a core wire connection check method.

  According to a second aspect of the present invention, in the first aspect of the present invention, two of the core wires of the multi-core cable are short-circuited in the slave-side relay interface according to instructions from the master-side personal computer and the slave-side personal computer. Then, a method for checking a core connection of a multi-core cable is characterized in that a continuity check is performed by connecting a line in a master side relay interface to a measurement line and measuring a current.

  According to a third aspect of the present invention, in the first aspect of the present invention, two of the core wires of the multi-core cable are opened in the slave-side relay interface according to instructions from the master-side personal computer and the slave-side personal computer. Then, a method for checking a core connection of a multi-core cable is characterized in that a line in the master side relay interface is connected to a measurement line and an insulation check is performed by measuring a current.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the measurement is performed under vibration conditions by providing an excitation means in the vicinity of the slave-side relay interface. This is a method for checking the core connection of a multicore cable.

  The present invention according to claim 5 is a multi-core cable for confirming the connection between the plugs at both ends of the multi-core cable connecting the operation portion and the main body portion of the electrical equipment and the core wires of the intermediate cable and the mutual insulation between the core wires. A core wire connection check device, which is connected to a master side relay interface to which one end of the multicore cable is connected, a slave side relay interface to which the other end of the multicore cable is connected, and the master side relay interface. A master-side personal computer and a measuring device, and a slave-side personal computer connected to the slave-side relay interface, and the master-side relay interface is paired with each other to transmit a control signal from the master-side personal computer 2 Line and power supply for measurement used for continuity and insulation check The two lines that are paired with each other are branched to each core wire, and each of the branched lines has an on / off means that can be individually turned on and off, and the four lines are grouped for each core wire to be connected to the outlet of the cable connector. The slave-side relay interface is connected to each of the core circuit from the cable connector into four systems, and each of the branched lines has an on / off means that can enter and exit independently. The paired two lines that transmit the control signal are connected to the slave-side personal computer, send the on / off signal of each line from the master-side personal computer to the master-side relay interface, and send the control signal to the slave-side personal computer through the control signal line The slave side relay interface from the slave side PC A core wire connection checking apparatus for a multi-core cable characterized in that to send a switching on and off signals of each line of the scan.

  According to a sixth aspect of the present invention, in the fifth aspect of the invention, the core wire of the multi-core cable is provided with a vibration means for performing measurement under vibration conditions in the vicinity of the slave-side relay interface. It is a connection check device.

  According to the present invention, since it is not necessary to place a worker on the main body part that is separated from the distance or the wall, the continuity check and the insulation check can be efficiently performed, and a signal error is reduced and the test accuracy is also improved. It has an excellent effect.

It is a block diagram of the core wire connection check apparatus of the multi-core cable of this invention. It is explanatory drawing which shows a master side relay interface. It is explanatory drawing which shows a slave side relay interface. It is a circuit diagram which shows the measurement circuit of a continuity check and an insulation check in this invention. It is a circuit diagram which shows the connection state in the continuity check of an Example. It is a circuit diagram which shows the connection state in the insulation check of an Example. It is explanatory drawing explaining the procedure of a continuity check and an insulation check concerning this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram of a multi-core cable core connection check device according to the present invention. The operation part of the equipment related to the target multi-core cable is in the operation room, the main part of the equipment to be operated is located away from this, and the multi-core intermediate cable connecting between them is the object of the connection check .

  There is a personal computer (hereinafter referred to as “master-side personal computer”, equipped with a keyboard for input and a display for display) PC1 in the operation room, and for control signals (AC) and communication with a relay interface RI1 to be described later. Two lines A and B that are shared for the power supply (direct current) are connected.

  Apart from this, a power supply for measurement for measuring voltage in the connection check and two ground lines C and D are connected to the same relay interface RI1.

  On the other hand, an adapter cable A1 is connected to the relay interface RI1, and one end (for example, a female side, also referred to as a plug) of the joint J1 is attached to the tip thereof. In some cases, the adapter cable A1 may be omitted, and the plug of the joint J1 may be provided directly on the relay interface RI1. The same applies to the device body side.

  A personal computer PC2 serving as a slave is installed at the device main body, and two lines A and B for control signals and power are connected to the relay interface RI2. An adapter cable A2 is connected to the relay interface RI2, and one end (for example, a female side, also referred to as a plug) of the joint J2 is attached to the tip of the relay cable RI2.

  A multi-core intermediate cable CC to be tested is connected between the joint J1 and the joint J2.

  For example, if the intermediate cable CC is for 100 lines, 100 core wires are bundled and connected to the pins of the joints (male side, also referred to as plugs) at both ends. Since it can be coupled only in a predetermined direction, the corresponding pin hole should be inserted into the corresponding pin hole. However, the cable length may be 100 m or more, and when wiring work, It is necessary to check whether the core wire between the joint J2 side is correctly connected to the corresponding pin and whether it is in contact with another core wire or the ground (hereinafter abbreviated as GND) in the middle.

  FIG. 1 shows a state in which a continuity check and an insulation check are performed. When the measurement is completed, the original operation device is connected instead of the relay interface RI1, and the main device is connected instead of the relay interface RI2. Needless to say.

  FIG. 2 is an explanatory diagram showing the relay interface RI1 on the operation room side.

  Two lines A and B of the control signal from the personal computer PC1 and two lines C and D of the power supply for measurement and ground branch to n + 1 (number of joint pins) (one is the ground line G), Each core wire is put together via a relay that can be turned on / off, and connected to the plug of the joint J1. Each relay can be operated from the personal computer PC1.

  FIG. 3 is an explanatory diagram showing the relay interface RI2 on the device body side. From the plug of the joint J2 via the adapter cable or directly, the extended line branches into four lines A, B, C, D, respectively, and A, B, C, The lines A and B are connected to the slave personal computer PC2. Each relay decodes the serial signal sent from the personal computer P1, and operates from the personal computer P2.

  Hereinafter, for each relay in the relay interfaces RI1 and RI2, for example, an A-line relay corresponding to the first core wire of the J1 joint is abbreviated as K (J1-1A).

  A measurement circuit in the following continuity check and insulation check is shown in FIG. G is GND (ground), E is a measurement power source, for example, DC 20V, R1 and R2 are resistors, for example, 10Ω, V is a voltmeter, and two wires between the joints J1 and J2 are core wires to be measured. In this figure, the two core wires on one joint J2 side are short-circuited, which is a continuity check circuit. If the short circuit is removed, an insulation check circuit is obtained.

(1) Initial setting Turn on the master and slave personal computers, PC1 and PC2.
For the relay interface RI2 on the device body side, the relays of odd number A lines, K (J2-1A), K (J2-3A),... K (J2- (2n + 1)) are turned on.
Each relay K (J2-2B), K (J2-4B),... K (J2-2n) of the even-numbered B line is turned on. All other relays remain off.
Turn on K (J1-1A) and K (J1-2B) of the relay interface RI1 on the operation room side. Other relays remain off.
The transmission and reception between the master and the slave by signals etc. are performed using the A and B lines, and the transmission / reception function by the A and B lines is confirmed. If transmission / reception is possible, the process proceeds to the next “LABEL 100”.
If not, turn off relays K (J1-1A) and K (J1-2B) on the master side, switch to cores 3 and 4, and turn on relays K (J1-3A) and K (J1-4B) Try to send and receive. This is repeated to secure two communication lines. It is assumed that communication is established between the joint J1-1 and the joint J1-2.
Each relay other than the established line is turned off once for both the master and slave.

(2) LABEL100 (Continuity check)
The continuity check of each core wire 3 and 4 (J1-3 and J1-4) is performed.
Turn on the slave side relays K (J2-3C) and K (J2-4C).
The master side relays K (J1-3C) and K (J2-4D) are turned on.
A voltage is applied to the master C line from the measuring power source through the resistor R1.
The master D line is connected to the return of the power supply through resistor R2.
The connection state at this time is shown in FIG. On the relay interface RI1 side, the relays 3C and 4D are on, on the relay interface RI2 side, the relays 3C and 4C are on, and everything else is off. Since the relays 3C and 4C are connected to the same line in the relay interface RI2 and are short-circuited, the current of the core wire 3 returns to the core wire 4.
Measure the voltage across resistor R2 on the D line. Since the current value is obtained according to Ohm's law, the conduction between the core wires 3 and 4 is determined to be OK if a current value within a predetermined range is recognized.
Thereafter, the measurement is repeated for all the core wires such as the core wire 3 and the core wire 5, the core wire 3 and the core wire 6.
Finally, the communication system is changed to the core wire 3 and the core wire 4, and the continuity between the core wire 1 and the core wire 2 is checked. This completes the continuity check for all core wires.

(3-1) LABEL210 (insulation check)
All slave relays other than the communication system (for example, core wire 1 and core wire 2) are turned off. As a result, the joint J2 side is completely open without a short circuit.
An insulation check between the core wire 3 and the core wire 4 (J1-3 and J1-4) is performed.
Turn on the relays K (J1-3C) and K (J1-4D) on the master side.
A voltage is applied to the C line on the master side through a resistor.
Connect the D line on the master side to the return of the power supply through a resistor.
In this state, the voltage of the master D line is measured. The connection state at this time is shown in FIG. If the voltage is “0” or less than a predetermined value, it is OK.
Subsequently, the measurement is repeated for every two combinations of the core wire 3 and the core wire 5, the core wire 3 and the core wire 6.

(3-2) LABEL220 (insulation check)
When the LABEL 210 is completed, the core wire 4 and the core wire 5, the core wire 4 and the core wire 6 are measured using the core wire 4 as a new reference.
Further, the measurement is repeated for a new combination based on the core wire 5, the core wires 6.
Finally, the communication system is changed to the core wire 3 and the core wire 4, the insulation check of the core wire 1 and the core wire 2 is performed, and all the processes are completed.

  In each of the above measurements, in order to cope with the case where the device is running in the practical stage or operating in a vibration environment such as an engine, an electrical excitation means, etc. is provided near the slave side relay interface, and a joint or cable is provided. It is desirable to be able to measure by giving vibration to the etc.

  A1, A2 ... adapter cable, C1-Cn ... core wire, CC ... multi-core cable, J1, J2 ... joint, PC1, PC2 ... personal computer, RI1, RI2 ... relay interface.

Claims (6)

A method for checking the connection of core wires of a multi-core cable for confirming the connection between the plugs at both ends of the multi-core cable connecting the operation part of the electrical equipment and the main body part and each core wire of the intermediate cable and the mutual insulation between the core wires,
A master-side relay interface to which one end of the multi-core cable is connected; a slave-side relay interface to which the other end of the multi-core cable is connected; a master-side personal computer connected to the master-side relay interface; The slave side personal computer connected to the slave side relay interface,
Each circuit in the master side relay interface and slave side relay interface is branched into 2 lines for control and 2 lines for measurement for each core wire, and each circuit branched according to instructions from the master side personal computer and slave side personal computer. A method for checking the connection of cores of a multi-core cable, wherein the connection check and the insulation check are performed by connecting two cable cores to a measuring device by making each of them individually accessible.   For two of the core wires of the multi-core cable, a line is short-circuited in the slave-side relay interface according to instructions from the master-side personal computer and slave-side personal computer, and the line in the master-side relay interface is connected to the measurement line. The core wire connection check method for a multi-core cable according to claim 1, wherein a continuity check is performed by measuring a current.   About two of the core wires of the multi-core cable, a line is opened in the slave side relay interface according to an instruction from the master side personal computer and the slave side personal computer, and the line in the master side relay interface is connected to the measurement line. The core wire connection check method for a multi-core cable according to claim 1, wherein an insulation check is performed by measuring a current.   4. The multi-core cable core connection check method according to claim 1, wherein measurement is performed under vibration conditions by providing an excitation means in the vicinity of the slave-side relay interface. A multi-core cable core wire connection check device for confirming the connection between the plugs at both ends of the multi-core cable connecting the operation part of the electrical equipment and the main body part and each core wire of the intermediate cable and the mutual insulation between the core wires,
A master-side relay interface to which one end of the multi-core cable is connected; a slave-side relay interface to which the other end of the multi-core cable is connected; a master-side personal computer connected to the master-side relay interface; The slave side personal computer connected to the slave side relay interface,
The master side relay interface is composed of two lines paired with each other for transmitting a control signal from the master side personal computer and two lines paired with each other for a power supply for measurement used for continuity and insulation check. Branching into each core wire, and having the on / off means that each branch line can be turned on and off individually, and the four lines are grouped for each core wire and connected to the outlet of the cable connector,
The slave-side relay interface has each core line circuit from the cable connector branched into 4 systems, and each of the branched lines has an on / off means that can be turned on and off individually. The pair of two lines for transmitting the signal is connected to the slave-side personal computer,
Sending the ON / OFF signal of each line from the master PC to the master relay interface, sending the control signal to the slave PC through the control signal line, and sending the ON / OFF signal of each line of the slave relay interface from the slave PC. A device for checking a core connection of a multi-core cable.   6. The apparatus for checking a core connection of a multi-core cable according to claim 5, further comprising an oscillating means for performing measurement under vibration conditions in the vicinity of the slave relay interface.

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