JPH03215759A - Pair identifier - Google Patents

Abstract

PURPOSE:To shorten an operation time by receiving DC pulse voltages which are sent out to two conductors among two couples of conductors with a signal receiver and displaying two DC pulse voltages which has a voltage difference and the number of electrodes. CONSTITUTION:When the conductors to be collated are confirmed, the quad (bundle of 2 pairs of conductors) which are considered as corresponding conductors is selected and two conductors of the quad are held therebetween with clip terminals 21 and 22 atop of the reception cord 20 of the signal receiver 14. Consequently, when the conductors are connected, the low voltage of 3V applied between L1 and L2 of the conductors 24 and 25 of a cable 23 to be collated makes only green lamp 15 of the device 14 blink in matching with a pulse signal. At this time, when the voltage is higher than a constant voltage, the yellow lamp 17 does not illuminate even if a switch 18 for confirmation is pressed, so it is confirmed that the conductors clipped by the clip are conductors #1 (conductors 24 and 25) for which the low DC pulse voltage of 3V is sent out. Similarly, when the lamp 17 is blinked conductors #2 (conductors 26 and 27) are confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application in Industry 7] The present invention relates to a fiber identifer for identifying corresponding cable cores at both ends of a communication cable, or between one end and the middle.

[Prior Art] Conventionally, when connecting and wiring communication cables, as shown in an example in Fig. 7, the call control personnel who will be waiting at the end of the cable line CL (generally on the switching station side) are first determined. Connect the connecting ends of the lead wires 52 and 53 of the head-type track test transmitter 51 to the connecting terminals Ta and Tb of the connecting core wires La and Lb, respectively, put the head spring 54 on your head, and put the transmitter 55 around your mouth. Place the telephone receiver 56 to your ear, connect the connecting end of the lead wire 58 of the transmitter 57 that emits an audible signal to the connection terminal Ta of the contact line La, and place the other end of the cable line CL on the other end of the site. A worker connects the connecting ends of the lead wires 60 and 61 of the head-type track test transmitter 59 to the connecting terminals Tc and Td at the other ends of the telephone core wires La and Lb, and puts the head spring 62 over his head and connects it to the transmitter 63. Since the telephone receiver 64 is used to make a meeting with the person to be called via the call lines La and Lb, the person to be called is using the transmitter 57.
The on-site worker can connect the probe connector 66 of the lead wire 65 to the probe connector 68 of the probe lead wire 67, one end of which is connected to the connection terminal Tb of the communication core Lb, from the core wire L1 to any one of the Ln group. The connection terminals T3 and T3' of the core wire L3 were connected to each other and energized to each other, and field workers confirmed the audible signal sound and compared it while making a comparison.

[Problems to be Solved by the Invention] In the conventional cable core comparison method described above, even when comparing small pairs of core wires, it is difficult to create a communication line between an indoor worker and an outdoor worker, and to have an outdoor worker on-site. The disadvantage is that indoor workers must wait for a long time while moving to the next location.

An object of the present invention is to eliminate the need for creating connecting wires when performing specific cable core wire comparison of a communication cable with a large number of threads.
For indoor workers, it is necessary to provide unnecessary wire contrast equipment.

[A Thousand Steps to Solve the Problem] The fiber comparator of the present invention detects two pairs of core wires with a voltage difference between the two pairs of core wires of a navigation communication cable connected to a signal sending terminal. a signal sending device that sends out a DC pulse voltage with a voltage value that is not likely to interfere with the gas sensor and telephone line connected to the line; and two core wires of the two pairs of core wires connected to the signal receiving terminal. The DC pulse voltage is numbered, and the DC pulse voltage being sent to the two core wires is determined which of the two sets of DC pulse voltages with the voltage difference, and the polarity of the DC pulse voltage is determined. It consists of a signal receiving device for displaying.

[Function] If the signal receiving terminal of the No. 3 receiving device is connected to two of the two pairs of core wires of the communication cable, the DC pulse voltage sent to the two core wires will be transmitted to the two pairs of signal transmitting devices. Since the DC pulse voltage level and polarity are displayed, there is no need to install a communication line between the location where the signal sending device is installed and the location where the signal receiving device is installed. This eliminates the need for indoor workers to wait before moving to the site, and the voltage value of the DC pulse voltage sent to the core wire is a value that does not pose a risk of interfering with the gas sensor or telephone line. Even if a gas sensor is connected to the core, the core can be compared without any problem.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a first embodiment of the fiber compatibility device of the present invention, FIG. 2 is a perspective view showing the connection of the fiber compatibility device of FIG. 1 to the communication cable core, and FIG. FIG. 4 is a diagram illustrating a first usage example of the fiber locator shown in FIG. 1, and FIG. 4 is a diagram illustrating a second usage example of the fiber locator shown in FIG. 1.

This fiber compatibility device is composed of a signal sending device 1 and a signal receiving device 14, and the signal sending device 1 includes a power switch 2, a red lamp 3.4, a yellow lamp 5.6, an adjustment knob 7, a test switch 8, and a signal sending device. Terminals 9, 10, I+, 12, transformers 100, 101, and stabilized power supply circuits 102, 103, 1
04, a flicker circuit 105, and a relay 106, the signal receiver 3 device 14 has a green lamp 15, a red lamp 16, a yellow lamp 17, a confirmation switch 18, a normal comparison confirmation buzzer 19, and a signal reception terminal 21.22. It is equipped with Signal sending device! In this case, the stabilized power supply circuits 102 and 103 are connected to the secondary side of the transformer 100, and the stabilized power supply circuit 104 is connected to the secondary side of the transformer 101, the plug is connected to the commercial power supply, and the power switch 2 is turned on. Then, DC voltages of 3 V, 4.5 V, and 6 V are output to the output sides of the stabilized power supply circuits 102, 103, and 104, respectively. The flicker circuit 105 receives the output voltage of the stabilized power supply circuit 104 and connects and disconnects the contacts of the relay 106 according to the flicker frequency adjusted by the adjustment knob 7. The output sides of the stabilized power supply circuits 102 and 103 are connected to red lamps 3 and 4 using light emitting diodes via resistors (400 ohm and 200 ohm), respectively, and when the power switch 2 is turned on, the red lamps are turned on. 3 and 4 will light up. Further, the output terminals of the stabilized power supply circuits 102 and 103 are connected in series with the contacts of the yellow lamps 5 and 6 of the light-emitting tie auto to the pointy relay 106 and to the signal sending terminals 9 and 11, respectively.
The sides are connected to direct signal output terminals 0 and 12, respectively. A contact of a test switch 8 is inserted in series with a 500 ohm resistor between the signal sending terminals 9 and 10 and 11 and 12, respectively, and when the test switch 8 is pressed, the DC pulse current caused by the connection and disconnection of the contact of the relay 106 turns yellow. Lamps 5 and 6 blink, allowing you to check the DC pulse voltage. In the signal receiving device 14, a normal comparison confirmation buzzer 19 is installed between clip-type signal receiving terminals 21 and 22.
A yellow lamp 17 is connected in parallel with two light emitting diodes connected in series in the same direction, and a green lamp 15 and a red lamp made of light emitting diodes are connected in series with the normally closed contact 28 of the confirmation switch 18. 16 are connected in parallel in opposite directions, and the directionality of the green lamp 15 is the same as that of the yellow lamp 17. The normal comparison confirmation buzzer 19 is a buzzer that goes off when the input polarities match, and when the signal receiving terminals 21 and 22 are respectively connected to the two wires to be compared, the normal comparison confirmation buzzer 19 goes off. ,
The direction of the polarity of the DC pulse voltage sent from the signal sending device 1 supplied to the two-core wire can be determined by whether the green lamp 15 lights up or the buzzer 19 does not move and the red lamp 16 lights up. Two yellow lamps 17 are connected in series and will not light up unless a relatively high voltage is applied, so when the green lamp 15 is lit, press the confirmation switch 18 to disconnect the green lamp 15 and red lamp 16. If the yellow lamp 17 lights up, it means that the DC pulse voltage sent to the two-core wire is 4.5 V on the output side, and if it does not light up, it means that the DC pulse voltage is 3 V on the output side. The DC pulse voltage sent to the core wire of the communication cable by this core wire comparator is 4.5V or 3V, so even if a scum sensor is connected to the core wire, it will not cause any particular trouble, and it will not affect other core wires. It has no effect.

Next, an example of the use of this fiber compatibility device will be explained.

In the example shown in FIGS. 2 and 3, at an unmanned telephone exchange,
This is for attaching pressure transmitters (gas sensors) to each specified core wire inside a manhole for all cables in the area. The signal sending device 1 is installed indoors where cables are concentrated, and the pulse voltage sending terminal 9,
+0.11.12 and the core wires 24, 25, 26.27 of the control cable 23 to be compared are connected in order with the transmission cord 13 for sending pulse voltage to the cable, and the power switch 2 is turned on. Check whether the yellow lamp 5.6 for pulse voltage confirmation blinks using the test switch 8. The above completes the installation of the signal transmitting device 1 as indoor work.

To confirm the core wire to be used as a reference, cut the core wire that seems to be applicable (two pairs of four core wires grouped together) in the manhole through which the target cable passes through which the sensor needs to be installed. , and sandwich the two cut wires with the clip terminals 21 and 22 at the end of the receiving cord 20 of the signal receiving device 14. As a result, as shown in FIG. 3(a), if the core wire is not connected, the low voltage of 3V applied between Ll and L2 of #l from the signal sending device 1 causes the signal receiving device 14 to turn green. Only the lamp 15 blinks in accordance with the pulse signal. At this time, if the voltage is not above the specified value, even if you press the confirmation switch 18, the yellow lamp 17 will not emit light, so the core wire held by the clip will be under low voltage (3V).
It is confirmed that the DC pulse voltage is being sent from core wire #1.

If the yellow lamp 17 blinks in the same operation, it can be seen that the core wire #2, to which a high voltage (4.5 V) is applied, is being gripped normally, as shown in FIG.

At this time, if the green lamp 15 and yellow lamp 17 do not light up and the red lamp 16 blinks, as shown in FIG. It can be seen that voltage is being applied, and that the reference core wires Ll and L2 and the coat destination clips Ll and L2 have been inserted incorrectly. Figure 3(b) is #1
This figure shows the case where the core wires are checked in the opposite direction, but (d) in the same figure shows the case where the #2 core wire is checked in the reverse direction. become,
By grasping the clip properly again, you can perform the procedure described in F to accurately check the core wire.

If the core wire is grabbed by mistake as shown in FIG. 3(e), none of the lamps of the signal receiving device 14 will light up.

Using this core wire calibrator, it was possible to easily confirm the core wire to be compared in a manhole located approximately 2 km away from the indoor location where the signal sending device 1 was installed. In addition, even in manholes located further away, a clear lamp display was obtained using a prototype signal receiving device with a built-in battery, despite the voltage drop. This prototype device has a distance of 2000 between the signal sending device 1 and
Normal operation is also shown when an ohm resistor is inserted. Considering that the line resistance from the telephone exchange to the farthest subscriber is specified by NTT as 1500 ohms, it has been confirmed that it can be used virtually anywhere within the area of one telephone exchange. Additionally, it has been confirmed that the pressure transmitter attached to the reference core wire has no effect because both the voltage and current of the sent signal are low. As a result of the above, there is no need for indoor workers, and there is no need to connect and create communication lines and reference lines, resulting in a significant improvement in the working method.

The example shown in FIG. 4 was used for construction work to create a "meeting line" to be installed on NTT's distribution cables. A "meeting line" is a core wire used for communication between the exchange office and outdoor workers during new telephone installation work, etc., and is commonly connected to all wiring cables in one area. be.

Figure 4 shows that, similar to the example shown in Figure 3, "
A signal is sent from the low-voltage side terminal 9.10 of the signal sending device 1 to the first core wire of the original cable (usually the first wire of the cable) used as a meeting wire. The outdoor worker places the clip signal receiving terminals 21 and 22 of the signal receiving device 14 on the first line of the main overhead cable 44 connected to the underground cable 43 at point A, and the lamp indicates that the signal is being sent to the first line. Make sure there is.

Next, among the 200 pairs of core wires 44 of the confirmed wiring cable, 100 pairs of branch wiring cables 46 are connected to numbers 1 to 100, and 100 pairs of main wires are connected to numbers 101 to 200. The first line of the 200-pair main line wiring cable 44 on the side of the signal sending device 1 which has been confirmed to be connected to the first line of each of the cables 45 is multi-connected. Next, move to point B, make a connection at point A, and then check the No. 1 line of the 100-pair main overhead wiring cable 45 using the signal receiving device 14. Of the 100 pairs of core wires, 50 pairs of main wiring cables 47 are connected to wires 1 to 50, and 50 pairs of branch wiring cables 48 are connected to wires 51 to 100. 1 of 100 pair main wiring cable 45 on the signal sending device side
Connect multiple wires.

In this way, the same operation as at points A and B is performed on the signal sending device 1 while checking the signal of the signal sending device 1 using the signal receiving device 14 at the point where the cable branches and the point where the logarithm decreases. A "meeting line" can be created by sequentially starting from the closest location. The advantages of this method are that, as in the example shown in Figure 3, there is no need for workers on the exchange side, and the time required for comparison is short. To make contact with a subscriber, it is possible to avoid the inconvenient and troublesome method of using a core wire connecting an exchange and a telephone subscriber for a meeting with a mobile phone while the subscriber is not using it.

FIG. 5 is a block diagram of a second embodiment of the fiber locator of the present invention, and FIG. 6 is a perspective view of the fiber locator of FIG. 5.

This core fiber comparator includes a signal sending device 31 and a signal receiving device 32.
It is becoming more and more. As shown in FIGS. 5(a) and 6(a), the signal sending device 31 includes a power switch 33, an indicator lamp 34, a test switch 35, an adjustment knob 36, transformers 201, 202, 203, and a control power circuit 2.
04, high voltage power supply circuit 205, and low voltage power supply circuit 20
6, oscillation circuit 207, and transistor on/off circuit 208
, 209, 210, rectifiers 2l1, 212, and signal sending terminals 21:11, 214, 215, 216.
．． 2] superimposed on the output voltages of the high-voltage power supply circuit 205 and the low-voltage power supply circuit 206 through the rectifier 2]1, 212, and then output to the signal sending terminal 21.
A high voltage DC pulse voltage is sent between the test switch 3 and 214, and a low voltage DC pulse voltage is sent between the signal sending terminals 215 and 216.
By operating 5, the display lamp 34 blinks and the high voltage DC pulse voltage and low voltage DC pulse voltage can be confirmed. Signal sending terminal 213,2
14, 215, and 216 are connected to the core wire of the communication cable by means of a transmission coat 38.

The signal receiving device 32 includes a power switch 37 and an indicator lamp 39.
, 40, 41, 42, signal receiving terminals 221, 222, high resistances 223, 224, piezoelectric buzzer oscillation circuit 225, reference voltage generation circuit 226, high voltage positive connection, human care health judgment circuit 227, low voltage positive connection, human power level judgment Circuit 228, high voltage reverse connection human power level determination circuit 229, low voltage reverse connection human power level determination circuit 230, and display switching circuit 231.232
and buzzer on circuit 233, piezoelectric buzzer 234, display buffer 235.2:16.2:17,238, high voltage positive connection LED display 239, and low voltage positive connection LED display 24
0 and high voltage reverse connection LED display 241 and low voltage reverse connection LE
D display 242. Signal receiving terminal 212,2
22 to the core wire to be compared, and turn on the power switch 3.
7, the DC pulse voltage manually applied from the signal receiving terminals 212, 222 through the high resistances 232, 234 is connected to the high voltage reference power supply and low voltage reference voltage generated from the reference voltage generation circuit 226. It is compared by the human power level determination circuit 227, the low voltage positive connection human power level determination circuit 228, the high voltage reverse connection human power level determination circuit 229, the low voltage reverse connection human power level determination circuit 230, and each input level determination circuit 227, 228, 229, 230 and display switching circuits 231 and 232, if the polarity of the human-powered DC pulse voltage is positive connection and high voltage, high voltage positive connection L.
The indicator lamp 39 lights up due to the ED display 239, and if the voltage is also low, the indicator lamp 40 lights up due to the low voltage positive connection LED display 240, and the buzzer on circuit 233
The piezoelectric buzzer 234 sounds by the power supply of the piezoelectric buzzer oscillation circuit 225 via the piezoelectric buzzer 234. At this time, the polarity of the manually applied DC pulse voltage is reverse connection, and if the voltage is high, the display lamp 41 will be lit by the high voltage reverse connection LED display 241, and if the voltage is also low, the low voltage reverse connection LED display 242 will indicate. The lamp 42 lights up.

In the signal receiving device of this core wire comparator, the difference between high voltage and low voltage of the human-powered DC pulse voltage is not detected by the voltage drop caused by the series connection of light emitting diodes as in the core wire comparator shown in Fig. Since a level judgment circuit is provided and a display lamp is lit by a display switching circuit, the judgment is easy to understand and the difference between high voltage and low voltage can be clearly displayed with a single operation. In addition, since a high resistance is inserted between the signal receiving terminals of the signal receiving device, experiments have shown that even if it is accidentally connected to the core wire used for PC communication or data lines, the line will not be affected. Confirmed by.

[Effects of the Invention] As explained above, the present invention provides two sets of gas sensors with a voltage difference between the two pairs of core wires of a communication cable and a direct current voltage detector that is not likely to interfere with the telephone line. Sending out a pulse voltage, and receiving the DC pulse voltage being sent to two core wires of the two pairs of core wires with a signal receiving device,
By displaying which of the two sets of DC pulse voltages with the voltage difference and the polarity, there is no need to create an extra connection line for cable comparison work, and the core cable can be compared at one end on the outdoor side. This eliminates the need for indoor workers to be on standby, allowing the outdoor work team to freely choose the work location and time, and the signal receiving device is small and easy to carry, eliminating the need for extra tools. This reduces the number of personnel required indoors and shortens work time.In addition, since there is no problem with the gas sensor or telephone line, it is possible to change the cable core, including the comparison of the gas sensor installation core, and new data. This has the effect of making it possible to efficiently perform line creation and comparing the connection points of intervening optical cable pairs.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a first embodiment of the fiber compatibility device of the present invention, FIG. 2 is a perspective view showing the connection of the fiber compatibility device of FIG. 1 to the communication cable core, and FIG. FIG. 4 is a diagram illustrating a second usage example of the fiber locator shown in FIG. 1, FIG. FIG. 6 is a block diagram of a second embodiment of the wire locator, FIG. 6 is a perspective view of the wire locator shown in FIG. 5, and FIG. 7 is a diagram showing a conventional wire locator. 1,3l...Signal sending device, 2,33.37...Power switch, 3.4...Red lamp (power supply), 5.6-...Yellow lamp (pulse confirmation), 7.36-・・・
Adjustment knob, 8.35...Test switch, 9.10, l1, 12.213.214, 215, 21
6...Signal sending terminal, 13.38...Transmission coat, 14.32...Signal receiving device, I5...Green lamp (confirm normality), 16...Red lamp (confirm reverse connection) , 17... Yellow lamp (for confirmation), l8... Confirmation switch, 1 9-... Normal comparison confirmation buzzer 20... Receiving code, 21, 22, 221, 222 -... Signal receiving terminal ,2
3...Cable containing control core wire, 24...#1
L1 core wire of wire, L2 core wire of 25-#1 wire, 26...#
2-wire L1 core wire, 27... #2 wire L2 core wire, 28.
...contact of confirmation switch 18, 34, 39, 40, 41.42--indication lamp, 43
-200 pairs underground cable, 44...200 pairs main line overhead wiring cable, 45...
100 pair main line overhead wiring cable, 46-100 pair branch wiring cable, 47...50 pair main line wiring cable, 48-50 pair branch wiring cable, 100, lot...transformer, 102,103.104...stable power supply circuit, 105
...flicker circuit, +06...relay 201.2
02,203...Transformer, 204...Control power supply circuit, 205...High voltage power supply circuit, 206...Low voltage power supply circuit, 207...Oscillation circuit, 208,209.210...・Transistor on/off circuit, 211, 212 - Rectifier, 217, 218... Test switch contact, 223, 2
24 - High resistance, 225 Piezoelectric buzzer oscillation circuit, 226 Reference voltage generation circuit, 227 High voltage positive connection person/boyfriend determination circuit, 228
...Low voltage positive connection human power level judgment circuit, 229...
High voltage reverse connection person's fault determination circuit, 230...Low voltage reverse connection person's fault determination circuit, 2:]I. 232... Display switching circuit, 233... Buzzer on circuit, 234 -... Piezoelectric buzzer 235, 236, 237, 238 -... Display puffer, 239... High voltage positive connection LED display, 240...
・Low voltage positive connection LED display, 241-...High voltage reverse connection LED display, 242-...Low voltage reverse connection LED display.

Claims (1)

[Scope of Claims] 1. A wire identifier for identifying corresponding cable core wires at both ends of a communication cable, or at one end and midway, comprising two pairs of the communication cables connected to a signal sending terminal. A signal sending device that sends out DC pulse voltage to each of the core wires with a voltage value that is not likely to cause a problem to the gas sensor and telephone line connected to the core wire, which have a voltage difference; and a signal reception device. A DC pulse voltage is received from the two core wires in the two pairs of core wires connected to the terminal, and the DC pulse voltage sent to the two core wires is one of the two sets of DC pulse voltages with the voltage difference. A core wire comparator comprising a signal receiving device that displays the polarity of the DC pulse voltage and the polarity of the DC pulse voltage.