JPH0575697A - Communication terminal equipment and core wire identification device employing the same - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a communication line terminal device and a core line identifying device using the communication line terminal device that enable easy and appropriate management of a database regarding the core line. [Composition] The communication line terminal device 101 is provided with a means for outputting unique information corresponding to each core wire 100 connected to each other, and each communication line terminal device 101 is based on the unique information from each output means. By identifying the core wire in
Even if the number of cores or the number of connections increases, the core number identification and the management of the wire number table can be facilitated, and mistakes in the wire number table can be prevented and labor can be saved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication line terminal device and a core identifying device using the communication line terminal device.

[0002]

2. Description of the Related Art Conventionally, in a telephone communication line, a connector used for connecting an optical cord in which optical fibers are bundled or a metal cord such as a coated electric wire, for example, a general use example of an optical connector is shown in FIG. Follow the instructions below.

That is, as shown in the configuration of the conventional optical communication line of FIG. 12, a plurality of optical communication terminals 71 provided on the telephone office 87 side are respectively connected via optical connectors 73 for wiring made of optical fibers. The optical distribution frame 77 is connected to the cord 75, and further from the optical cord 75 through the optical connector 73.
Via the pair of optical connectors 73 connected to the opposite side of the light distribution rack 77, the optical fiber core wires 75a are bundled as an optical cable 79 and connected by a connection box 88. Further, it is divided into individual optical fiber core wires 75a via the optical cable 81, and the optical connector 7
3 and the optical cord 75, and is connected to each optical communication terminal 83.

In the connection box 88, the optical fiber core wires 75a forming the optical cable 79 are connected to the optical fiber core wire 75a via a pair of optical connectors 73, 73 connected to each other. Each optical fiber core wire 7
5a are put together to form an optical cable 81.

Further, in the above-mentioned optical communication line of FIG. 12, an optical pulse tester 89 is provided on the telephone station side in preparation for a line failure test, and this optical pulse tester 98 passes through an optical cord 75. Optical connector 7 connected to the light distribution rack 77
3 from the optical connector 73 to the light distribution rack 77.
The optical cable 73 is connected to the optical connector 73 of the pair, and the optical cable 79 is connected via the optical fiber core wire 75a to be connected to the optical communication line.

As described above, the optical connector is mainly used only for optical connection of the optical fiber core wire in the light distribution rack 77, the connection box 88, etc., and also in the case of the metal connector in the metal communication line. , Is similar to the above in that it is used only for electrical connection.

Further, in the conventional maintenance management system for the optical communication line constructed as shown in FIG. 12, the optical pulse tester 89 has been described above when the line is faulty and communication is interrupted. As shown in the figure, it connects to the failed optical communication line, measures the disconnection position, and tracks the connection status based on the line number table etc. recorded in the database recorded at the time of line construction to identify the disconnection core wire number in the optical cable. Then
Furthermore, after detecting an empty core wire, that is, an unused core wire from the wire number table in the same way, after repairing the faulty core wire by changing the core wire connection and repairing the faulty core wire, manually enter the changes in the database. ing.

[0008]

The above-mentioned conventional communication line maintenance management system, when recovering from a fault, identifies the broken core number and the unused core line from the database at the time of manually constructing the line as described above. If there is a description error in the database or a computer input error because the changes have been made, or if wiring has been changed due to separate construction immediately before the failure occurred and the change status has not been entered in the database There is a possibility of causing serious damage to the work of connecting the cores when recovering from an emergency.

Further, in the future, when the number of core wires in the optical or metal communication line increases, a large amount of operations will be required for the description and the contents modification work in the database in the normal core wire connection change work, and the core wire number. It is expected that not only quick response such as identification will become difficult, but also mistakes in writing in the database and mistakes in connecting cores will occur frequently.

The present invention has been made in view of the above,
It is an object of the present invention to provide a communication line terminal device and a core line identifying device using the communication line terminal device, which enables easy and appropriate management of a database regarding the core line.

[0011]

In order to achieve the above object, in a communication line terminal device for connecting core wires terminals to each other, the present invention comprises means for outputting unique information corresponding to each core wire to be connected. The point is to do.

Further, according to the present invention, a plurality of communication terminal devices each having an output unit for the unique information corresponding to each core wire connected to each other, and each communication terminal device based on the unique information from each output unit. The gist is to have an identification means for identifying the core wire in.

[0013]

In the present invention, the communication line terminal device is provided with the output means of the unique information corresponding to each core wire connected to each other, and each communication terminal device is based on the unique information from each output means. I try to identify the core line in.

[0014]

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

FIG. 1 is a diagram showing a schematic configuration of an embodiment of the present invention.

In FIG. 1, each communication line terminal device 101 connecting the core wires 100 to each other is provided with an electric circuit element 102 composed of two resistors and one Zener diode which constitute means for outputting unique information. Formed and deployed as one. The core wire identification device 103 includes a plurality of communication wire terminal devices 10.
A circuit element selection unit 104 that selects a circuit element 102 incorporated in a certain communication line terminal device 101 from a plurality of circuit elements 102, and an applied voltage setting function for identifying the impedance value of each circuit element 102. And an electric signal converter 105 having an output voltage measuring function, a signal for calculating an impedance value, converting the impedance value into a digital signal, and performing signal processing according to a command from an external communication destination such as a host computer arranged in the telephone station or the like. Receive a command from the processing unit 106 and an external communication destination,
It is configured by a communication unit 107 for transferring the data regarding the impedance value via the dedicated communication line 108, and the remote / automatic / real-time core wire identification can be performed by measuring and transferring the impedance value. It is a thing.

In FIG. 1, the electric circuit element 10 is
Although 2 is shown as being composed of two resistors and one Zener diode, it is not limited to this, and for example, one consisting of only one resistor, capacitor and inductance are used. In addition, various elements such as a combination of these elements with a resistor or a diode can be used.

FIG. 2 is a diagram showing a circuit configuration of an electric circuit element 102 which constitutes the communication line terminal device 101 shown in FIG. 1, and a portion surrounded by a broken line corresponds to the electric circuit element 102. This electric circuit element 102 includes resistors R1 and R2.
Are connected in series, and the Zener diode ZD is connected in parallel to the resistor R2. R0 corresponds to the internal resistance of the power supply unit or the internal resistance of the transistor switch connected in series with the power supply unit. FIG. 2A shows the resistance R0 from the terminals a and b corresponding to the lead electrodes of the electric circuit element 102.
A circuit state diagram in the case where a voltage E1 in the range in which the Zener diode ZD does not operate is applied via, and a circuit state diagram in the case where a voltage E2 in the range in which the Zener diode ZD also operates is added.

The resistance values R1 and R2 are obtained from the relational expressions for obtaining the currents i1 and i2 and the voltages V1 and V2 in the circuit state diagrams of FIGS.

From the figure, R1 and R2 are calculated as follows.

R1 = (V2-Vz) * R0 / (E2-V2) R2 = [V1 (E2-V2)-(E1-V1) (V2-Vz)] * R0 / (E1-V1) (E2- V2) Thus, two resistors and Zener diode ZD
The resistance values R1 and R2, which are the core wire identification information, can be obtained by applying two kinds of power supply voltages to the electric circuit element 102 composed of one combination and two lead electrodes.

For example, let the resistance values of the resistors R1 and R2 be n.
If you prepare as many as n, you can have n ² combinations,
= 100, 10,000 kinds of identification can be performed, and even when a large number of core wire connections are concentrated, it can be sufficiently dealt with. Furthermore, by adopting chip-shaped resistors and diodes, the communication line terminal device 101 can be downsized and can be constructed at low cost.

FIG. 3 is a diagram showing another circuit configuration of the electric circuit element 102 constituting the communication line terminal device 101. This circuit element is a general-purpose diode D instead of the Zener diode ZD in the embodiment of FIG. Is used. In FIG. 3, the portion surrounded by the broken line is the electric circuit element 1.
It corresponds to 02.

In FIG. 3, assuming that the voltage E is larger than the forward voltage of the diode D, the voltage E is applied to the diode D so as to be reverse-biased, as shown in FIG.
In (b), the polarity of the voltage E is switched and applied so that the forward bias is applied. Also in this electric circuit element 102, the core wire identification information R1 and R2 can be obtained in the same manner as in the case of FIG. 2, and by adopting chip-shaped resistors and diodes, the communication line terminal device 101 can be obtained.
Can be made compact and can be constructed at a low price.

FIG. 4 is a diagram showing another circuit configuration of the electric circuit element 102 constituting the communication line terminal device 101, which is a general-purpose diode D, D1 to Dn, D ', D.
1'-Dn 'and Zener diodes ZD1-ZDn, Z
D1 'to ZDn' are combined and the polarity is switched while the power supply voltage level is multistaged (E1 to En, -E1 to
-En), the resistance value or the combined resistance value is read, and each resistance value is used as the core wire identification information. Similarly,
The portion surrounded by the broken line corresponds to the electric circuit element 102.

In the figure, general-purpose diodes D, D1 ...
Dn, D ', D1' to Dn 'are those having a common VI characteristic, and Zener diodes ZD1 to ZDn and ZD1' to ZDn 'are arranged such that the Zener voltage VZ is sequentially increased and the power supply voltage level is Voltage values E1 to En and −E1 to −En for operating any number of these Zener diodes ZD1 to ZDn and ZD1 ′ to ZDn ′.
The composite resistance value corresponding to the operating state of one or a plurality of Zener diodes can be used as the core wire identification information. Here, the power supply voltage is passed through E, and resistors R, R1 to Rn and R ', R1' to Rn 'are used.
If n types are prepared, E ^{2n types} can be identified and the number of identifications can be increased.

FIG. 5 is a diagram showing the structure of the communication line terminal device 101. FIG. 5A is a perspective view of the communication line terminal device 101 for butt-coupling connection of metal core wires, and FIG.
Is a perspective view of a package of the electric circuit element 102, which is also formed of a resistor, etc., (c) is a perspective view of a metal core connection example, and (d) is a mounting view on a printed circuit board.

In the communication line terminal device 101, a lead electrode 2 is connected to an electric circuit element 102 composed of a resistor and a diode as shown in FIG. And the like to form the circuit element package 3 and the circuit element package 3 corresponding to each core number is incorporated into the frame 4 and integrated, and further, as shown in FIG. 100
a and 100a 'are butt-connected by the grooved electrode 6 and integrated as shown in FIG. Then, the lead electrode 2 of this communication line terminal device 101
Is mounted on the printed wiring board 7 and electrically connected as shown in FIG. 3D, and the core wire identifying device 103 selects the circuit element 102 and measures the impedance value.

The circuit element 102 is preferably as small as possible in order to make the connecting portion of the core wire terminal small, and the communication wire terminal device 101 can be made small by adopting a chip-shaped one.

In both cases of the metal core wire and the optical core wire, a plurality of communication wire terminal devices 101 shown in FIG. 5A can be assembled to mechanically connect the core wire terminals together. Therefore, as shown in FIG. 5D, it is possible to collectively mount the printed circuit board 7.

On the other hand, the communication line terminal device 101 is not limited to the structure shown in FIG. 5, but may have the structure shown in FIGS. 6 to 8, for example.

FIG. 6 shows a communication wire terminal device 10 for connector type metal core wire connection for connecting a metal cord such as a covered electric wire.
It is a perspective view of 1. Communication line terminal device 101 in FIG.
Uses a frame 9 to connect a part of the metal core wire 5 of the balanced metal communication line to a connector, and the circuit element 102 and its lead electrode 2 are integrally formed on this connector on the same side surface as the metal core wire lead electrode 8. It is a thing. And
In this communication line terminal device 101, the metal core wire 5 is connected by inserting the metal core wire lead electrode 8 into another connector or adapter, and the lead electrode 2 is directly connected to the receiving electrode on the adapter side or the printed wiring board. Alternatively, it is indirectly connected to the core identification device 103 to output core identification information based on the impedance value.

FIG. 7 is a perspective view of a communication line terminal device 101 for a push-pull coupling type optical connector. In the communication line terminal device 101 in the figure, the circuit element 102 is made of an insulating resin as a package 3, and the lead electrode 2 of the circuit element 102 is protruded from the package 3 to form a pin insertion type in the same direction as the insertion direction of the frame 11. As a push-pull coupling type optical connector. At the same time when the optical connector is connected, the lead electrode 2 is directly or indirectly connected to a not-shown adapter-side receiving electrode or a printed wiring board.
3 to output core wire identification information based on the impedance value. In FIG. 7, 1
Reference numeral 2 is a ferrule, and 13 is an optical fiber cord.

In FIG. 8, two circuit elements 102 are provided in the package 3 in the communication line terminal device 101 of FIG. 7, one of the lead electrodes 2 of each circuit element 102 is commonly used, and three lead electrodes are provided. 2 shows the communication line terminal device 101 configured as No. 2, and other configurations are the same as those in FIG. 7.

FIG. 9 is a block diagram of the core identifying device 103.

In the figure, the core identifying device 103 includes analog switches 21-1 to 21-n, a DA converter 22, an A / D converter 23, a CPU (central processing unit).
24, a chip selector 25, a communication circuit 26, and analog switch driving control lines 27, 28, 29. The analog switches 21-1 to 21-n and the chip selector 25 constitute the circuit element selection unit 104,
The D-A converter 22 and the A-D converter 23 form an electric signal conversion unit 105, the CPU 24 forms a signal processing unit 106, and the communication circuit 26 forms a communication unit 107. Further, in FIG. 9, A1 to An denote the electric circuit element 102 including two resistors and one Zener diode of the communication line terminal device 101.

In the core identifying device 103 having the above-mentioned structure, the communication terminal device having the electric circuit element 102 consisting of two resistors having a resistance value corresponding to the core number and one Zener diode in advance. 101, for example, the analog selector 21-2 by the chip selector 25
Is selected and it is turned on. As a result, the two voltages E1 and E2 shown in FIG. 2 are applied to the circuit element 102 indicated by A2 by the D-A converter 22, and at the same time, the voltages V1, V2 and E1, E are generated by the A-D converter 23.
2 is measured, and the CPU 24 receives this information and calculates two resistance values to identify the core wire.

Thereafter, the CPU 24 performs predetermined data formatting on this identification result to obtain core line identification information, and connects the core line identification information to the outside by the dedicated communication line 108 via the communication circuit 26. It is transferred to a monitoring system (for example, Japanese Patent Laid-Open No. 2-140635).

Regarding this transfer, the communication circuit 26 can be a circuit corresponding to the optical code or a circuit corresponding to the metal code, and can be determined by the dedicated communication line 108 used. If the dedicated communication line 108 is a metal code, it can be used as a data transfer communication line and a power supply line for supplying power to each circuit of the core identifying device.

Therefore, according to the present embodiment, it is possible to increase the number of core wire identifications within the same connection point (in the terminal box) of the cable.

FIG. 10 is a diagram showing another configuration example of the core identifying device 103. The core identifying device shown in the figure has electric circuit elements R1 to R1 made up of only one resistor instead of electric circuit elements A1 to An made up of two resistors and one Zener diode shown in FIG. Rn is used to measure the resistance values of the electric circuit elements R1 to Rn, and the measured information is used as the core wire identification information. The resistance values of the electric circuit elements R1 to Rn are preset in correspondence with the core numbers.

The core wire identifying apparatus shown in FIG. 10 is different from the core wire identifying apparatus shown in FIG. 9 only in that a constant current source 22 is used instead of the DA converter 22. That is, in the case of identifying the core wire corresponding to, for example, the electric circuit element R4 among the plurality of electric circuit elements R1 to Rn, the analog switch 2 is determined by the chip selector 25.
Select 1-4 to turn it on, so that the constant current source 2
An electric current is caused to flow from 2 to the electric circuit element R4, the voltage drop in the electric circuit element R4 is converted into a digital signal through the A / D converter 23, and the digital signal is supplied to the CPU 24. C
The PU 24 identifies the core wire by comparing the level of the digital signal corresponding to the voltage drop with a reference value stored in advance.

FIG. 11 is a diagram showing the configuration of another embodiment of the present invention.

In FIG. 11, 51 and 52 are connection points (terminal boxes), 40 is a core wire identification device, 30 is a dedicated communication line, and 70
Is a printed wiring board, M1 to Mn and L1 to Ln, P
1 to Pn, Q1 to Qn, T1 to Tn are electric circuit elements of the communication line terminal device, K1 to K3 and J1 are communication cables,
S1 to S5 are electric circuit elements of the communication line terminal device for identifying the core wire for each connection point (terminal box).

In the terminal box 51 of FIG. 11, the electric circuit elements S1 and S2 of the communication line terminal device for identifying the core wire for each connection point are arranged on the printed wiring board 70 at the same connection point, and the terminal box 51 is provided. The attributes for each cable in
By assigning to each core wire in S2 and hierarchizing the core wire identification number, it is possible to identify the core wire for each connection point without preparing a huge series of impedance values.

In this case, in the terminal box 51, for example, S
By using one IC memory in addition to 1, S2, unique information of the terminal box to which all communication line terminal devices in the terminal box 51 belong (for example, cable route, cable type, terminal box installation location) , All of the terminal box numbers, or a part thereof can be added, and the core wire between the cable connection points (terminal boxes) can be identified.

On the other hand, in the terminal box 52, the cable K2
Of the communication line terminal device for identifying the core wire for each connection point (terminal box) even when the core wire of the same is branched by the heterogeneous cable J1 and the same core wire number is connected. By arranging S5 on a cable-by-cable basis and assigning an attribute for each cable to the corresponding core wire, the core wire identification becomes easy.

Also in this case, when the terminal box 52 is branched by the heterogeneous cable J1, the electric circuit element of the communication line terminal device for identifying the core wire for each connection point (terminal box). Instead of S3 to S5, only one IC memory is divided into 3 and assigned to each cable, and attributes are assigned to each core number, so that even different cables and the same core number can be easily identified. It becomes possible to do.

Furthermore, the electric circuit elements S1 to S5 of the communication line terminal device for identifying the core wire for each connection point (terminal box).
To an IC memory (for example, EEPROM: Electrically
-Erasable-Programable ROM) can be replaced.

Therefore, according to the present embodiment, in addition to the effects of the above-described embodiment, it is necessary to prepare a series of enormous impedance values even when the total number of core wires arranged in the network is extremely large. Instead, it is possible to separately identify the connection points.

[0051]

As described above, according to the present invention,
The communication line terminal device is configured to have a means for outputting unique information corresponding to each core wire connected to each other, and the core wire in each communication line terminal device is identified based on the unique information from each output means. Therefore, even if the connection of the core wire is changed in the field as in the past, it is not necessary to change the description in the database regarding the core wire connection, and when the core wire connection by this communication line terminal device is carried out, The core wire identification device can provide the core wire identification information based on the unique information rapidly in real time, for example, to the connection status monitoring system. Even if the number of core wires or the number of connections increases, the core wire number identification and the wire number table management work It becomes easy to prevent mistakes in the wire number table and save labor.

[Brief description of drawings]

FIG. 1 is a diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a detailed configuration and operation of an electric circuit element used in the embodiment shown in FIG.

FIG. 3 is a diagram showing another detailed configuration and operation of the electric circuit element used in the embodiment shown in FIG.

FIG. 4 is a diagram showing another detailed configuration and action of the electric circuit element used in the embodiment shown in FIG.

5 is a diagram showing a detailed configuration of the communication line terminal device shown in FIG.

FIG. 6 is a diagram showing another configuration of the communication terminal device.

FIG. 7 is a diagram showing another configuration of the communication terminal device.

FIG. 8 is a diagram showing still another configuration of the communication terminal device.

9 is a diagram showing a detailed configuration of a core wire identifying device used in the embodiment of FIG.

FIG. 10 is a diagram showing a detailed configuration of another core identification device.

FIG. 11 is a diagram showing the configuration of another embodiment of the present invention.

FIG. 12 is a configuration diagram of a conventional optical communication path.

[Explanation of symbols]

 100 core wire 101 communication line terminal device 102 electric circuit passive element 103 core wire identification device 104 circuit element selection unit 105 electric signal conversion unit 106 signal processing unit 107 communication unit 21-1 to 21-n analog switch 22 DA converter 23 A-D converter 24 CPU 25 Chip selector 26 Communication circuit 40 Core identification device 51 Terminal box 53 Terminal box

Claims (2)

[Claims] 1. A communication line terminal device for connecting core wire terminals to each other, comprising a means for outputting unique information corresponding to each core wire to be connected. 2. A plurality of communication line terminal devices each having a unique information output unit corresponding to each core wire connected to each other, and a core in each communication line terminal device based on the unique information from each output unit. A core wire identifying device having an identifying means for identifying a wire.