JPH0646466A - Matrix type mdf - Google Patents

Abstract

PURPOSE:To connect between the subscriber cables in a short period of time and also to prevent the crosstalk with the outside by providing a switch means which controls the connection/disconnection of a switchboard connection cable. CONSTITUTION:The relays 7 and 8 are arranged in a matrix constitution on a 1st layer 1A of a matrix board 1. The intersecting relay 7 is placed at the intersecting point between a row wiring 9 and a column wiring 10, and the contact of the relay 7 is closed and opened with the plus voltage and minus voltage respectively. Meanwhile the end part relay 8 is placed at the intersecting point between an end part control line 11 and the wiring 10, and the contact of the relay 8 is closed opened with the minus voltage and the plus voltage respectively.Thus the connection/disconnection is carried out between wiring 10 and a switchboard cable 4. When the subscriber cables 3 are connected to each other in an MDF, the connection is required between both wiring 9 and 10 via the relay 7 together with the disconnection required between the wiring 10 and the cable 4 via the relay 8 respectively. In this case, both the connection and the disconnection are complete just with a signal action since the relay 7 has the polarity opposite to that of the realy 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a matrix MDF which enables high-speed connection between subscriber cables and enables broadband communication using existing telephone lines.

[0002]

2. Description of the Related Art The transmission band of a conventional telephone line is about 3.1K.
It was Hz. This reduces the cost of cables between exchanges by limiting the frequency band per subscriber,
This was to transmit many calls at the same time with one cable. This multiplexing has been performed in the exchange or its peripherals. On the other hand, the subscriber cable was connected to the exchange through a connection device called MDF.

Therefore, if the subscriber cables can be connected in the MDF, if the subscriber cables are in the same exchange,
Communication without band limitation becomes possible. Since this system can use existing telephone lines for equipment, it can provide broadband communication services at a very low cost, resulting in high-quality voice communication, moving image transmission, high-speed computer-to-computer communication, etc. .

[0004]

In order to carry out this service commercially, it is necessary to connect the subscriber cables and, as a work associated therewith, to prevent interference with telephones from the outside, exchanges / subscriptions. It is necessary to realize disconnection between individual cables in a short time and at low cost. However, in the conventional MDF, the connection between cables was done manually, so that the connection took too much time and the cost was high. , Was not realized commercially.

Recently, an automated MDF having a robotized connection has been developed, but this cannot be applied to the above purpose. This device uses a pin board for the matrix board, and one of the row wiring or column wiring of the board is connected to the subscriber cable and the other to the exchange connection cable in advance,
A robot inserts a metal pin at the difference between the row wiring and the column wiring to connect an arbitrary subscriber cable and exchange connection cable. And all the row and column wiring on the board was connected to the subscriber or switch cables.

Therefore, in order to connect the two subscriber cables, it is necessary to go through the row wiring or the column wiring connected to the exchange connection cable, and it is said that if there is a telephone call from the outside, it will be interfered with. There was a problem. It is possible in principle to disconnect the input from the outside in the exchange, but this requires modification of the exchange.

As described above, in the conventional MDF, it is impossible to economically connect the subscriber cables in a short time and prevent interference with the outside by either the manual or automatic method. .

The present invention has been made in view of the above points, and an object thereof is to provide a matrix MDF capable of economically connecting subscriber cables in a short time and at the same time preventing interference with the outside. Is to provide.

[0009]

SUMMARY OF THE INVENTION The present invention provides a switch means for controlling connection / disconnection of the exchange connection cable in a matrix type MDF having wirings in rows and columns for connecting a subscriber cable and an exchange connection cable. Provided and configured.

According to the present invention, a self-latch type summing type relay for connecting / disconnecting contacts is provided only when two signals having the same polarity are simultaneously applied to the two control sections. , An intersection relay that controls connection / disconnection of intersections of column wirings, and an end relay as the switch means, and by applying the same polarity signal to the two control units, the intersection relay and the end relay It is also possible that one connects the contacts and the other disconnects the contacts.

[0011]

In the present invention, since the subscriber cables can be connected / disconnected and the exchange connection cables can be connected / disconnected on the matrix board, the subscriber cables can be connected without causing interference. Further, by using the self-latch type Japanese relay, connection / disconnection of the intersections of the wirings in the rows and columns and the connection / disconnection of the exchange connection cable can be performed in parallel, and the switching work time can be shortened. Furthermore, since the crossing relay and the end relay can be controlled in opposite directions at the same time,
Compared to the case where all relays have the same structure, the work procedure required for disconnection and connection can be reduced, and the switching work time can be further shortened.

[0012]

EXAMPLES Examples of the present invention will be described below. FIG. 1 is a block diagram showing an outline of the whole matrix MDF of the embodiment. The MDF of this embodiment includes a matrix board 1 and a control device 2. The matrix board 1 is
Control device 2, subscriber cable 3, exchange connection cable 4
The subscriber cable 3 is connected to the telephone 5 and the exchange connection cable 4 is connected to the exchange 6. The control device 2 has a large number of output terminals, and outputs a positive or negative electric pulse having a constant current value to an arbitrary terminal.

The matrix board 1 has a three-layer structure as shown in 1A to 1C. The first layer 1A has 2
Two groups of self-latching two-contact summing type relays 7 and 8 are arranged in a matrix. One group of relays 7,
It is located at an intersection of a row wiring 9 and a column wiring 10, which will be described later, and its contact point is closed by a positive voltage and opened by a negative voltage. The relay 8 of the other group is located at the intersection of the end control line 11 and the column wiring 10, which will be described later, and its contact point is closed with a negative voltage and opened with a positive voltage. Hereinafter, the former relay 7 will be called an intersection relay, and the latter relay 8 will be called an end relay.

On the second layer 1B, a large number of sets of three wires are installed in the horizontal (row) direction. 2 out of 1 set of wiring
The book (indicated by a solid line in FIG. 1) is connected to the subscriber cable 3, and the remaining one (indicated by a broken line) is connected to the control device 2.
The former is the row wiring 9 and the latter is the row control line 12. In addition, in parallel with these, 1 at the end of the matrix board 1
Book wiring (indicated by a broken line in FIG. 1) is installed and connected to the control device 2. This wiring is the end control line 11.

On the third layer 1C, a large number of sets of three wires are arranged in parallel in the vertical (column) direction. Of the one set of wiring, two wires (shown by solid lines) are connected to the exchange connection cable 4, and the remaining one wire (shown by broken lines) is connected to the control device 2. The former is the column wiring 10 and the latter is the column control line 13.

The intersection relays 7 of the first layer 1A are provided one by one on the intersections of the row wirings 9 and the column wirings 10, and the opening and closing of their contacts are controlled by the signals of the row control lines 12 and the column control lines 13 passing through the intersections. The row wiring 9 and the column wiring 10 passing through the intersections are connected / disconnected. That is, although not shown in FIG. 1, the row wirings 9 and the third wirings of the second layer 1B at the intersections are arranged.
The column wiring 10 of the layer 1C is connected to the controlled terminal of the intersection relay 7 at the intersection of the first layer 1A by a cable penetrating the board, and the row control line 12 and the column control line 13 are also cables penetrating the board. More connected to the control terminal of the intersection relay 7.

The end relay 8 is arranged at the intersection of the end control line 11 and the column wiring 10, and its opening / closing is controlled by the signals of the end control line 11 and the column control line 13 to connect the column wiring 10 and the exchange. It is designed to connect and disconnect with the cable 4. These wirings and the end relay 8 are connected by a cable penetrating the substrate, as in the cross point relay 7.

FIG. 2 is a diagram showing the structure of the intersection relay 7. Between the control terminals 7A1 and 7A2 and between the control terminals 7B1 and 7A7
When a positive current is simultaneously applied during B2, the controlled terminals 7C1 and 7D1 and the controlled terminals 7C2 and 7D2 are closed, and when a negative current is simultaneously applied in this state, The controlled terminals are separated from each other. Further, once the above current is applied, the disconnected / connected state is maintained even after the current is turned off. Furthermore, two sets of control terminals 7A1, 7A2 and 7B1,
The connection / disconnection state does not change even if a current is passed through only one of the 7B2.

The operating principle of the cross point relay 7 will be described in detail below. The cross point relay 7 includes a permanent magnet 701,
An electromagnet core 702 disposed adjacent to this, and a coil 70 wound around the electromagnet core 702 and functioning as a control unit.
3, 704, magnetic pole 70 with electrodes 705, 706 mounted
7, magnetic pole 710 having electrodes 708 and 709 mounted thereon, magnetic pole 7
Leaf springs 71 that connect the magnets 07, 710 and the magnets 701, 702.
1, 712.

Here, the electromagnet core 702 is made of a semi-hard magnetic material and has a magnetization characteristic as shown in FIG.
That is, in the initial state where no current is passed through the coils 703 and 704, the electromagnetic magnet core 702 is magnetized to the state of A in FIG. Further, the permanent magnet 701 is magnetized so that its polarity is opposite to that of the electromagnet core 702 in the A state, and the strength of magnetization is equal.

Therefore, in the initial state, the sum of the magnetic forces of the permanent magnet 701 and the electromagnet core 702 becomes zero, and the magnetic pole 70
No magnetic force acts between 7, 710, and electrodes 705 and 70
8 and between 706 and 709 are opened by the force of the leaf springs 711 and 712 (state of FIG. 2).

Next, when a positive or negative current is passed through one of the coils 703 and 704, the external magnetic field shown by B or H in FIG. 3 is applied to the electromagnet core 702. At this time, the strength of magnetization of the electromagnet core 702 is the same as that in the state A, and the state returns to the state A again when the current is cut off.

Next, when a positive current is applied to both coils 703 and 704 at the same time, a magnetic field indicated by C is applied to the electromagnet core 702. At this time, the strength of magnetization of the electromagnet core 702 has the same absolute value as A and the sign opposite to A. When the current is cut off at C, the state of E does not return to A. In this E state, since the permanent magnet 701 and the electromagnet core 702 have the same polarity, a magnetic attraction force acts between the magnetic poles 707 and 710 in FIG.
And 708 and 706 and 709 are in contact with each other. That is, between the controlled terminals 7C1 and 7D1, the controlled terminal 7
Conduction is established between C2 and 7D2.

Next, in the state of E in FIG. 3, when a positive or negative current is applied to one of the coils 703 or 704,
The electromagnet core 702 is in the D or F state. At this time,
The strength of magnetization is the same as E, so when the current is turned off, E
Return to the state of. That is, at this time, the electrodes 705 and 70
The contact between 8 and between 706 and 709 remains.

Next, when a negative current is applied to both the coils 703 and 704, the electromagnet core 702 becomes G state. The intensity of magnetization at G is equal to the value at A, so when the current is cut off, the state becomes A. In the state of A, the polarities of the permanent magnet 701 and the electromagnet core 702 are opposite,
The total magnetic force becomes zero, and the magnetic attraction force between the magnetic poles 707 and 710 disappears. As a result, the plate springs 711 and 712 separate the electrodes.

As described above, the intersection relay 7 closes the electrodes only when a positive current flows through the two coils 703 and 704 at the same time, and opens the electrodes only when a negative current flows at the same time. This state is maintained even if the current is cut off. Further, when a current is passed through only one coil, the open / closed state of the electrode does not change.

The above is the description regarding the cross point relay 7, but only the point that both coils 703 and 704 in the end relay 8 are wound in reverse. Therefore, the contacts are opened and closed when a current in the opposite direction to that of the intersection relay 7 simultaneously flows between the two sets of control terminals.

FIG. 4 shows the connection relationship between the intersection relay 7 and the row wiring 9, the row control line 12, the column wiring 10 and the column control line 13.
The two row wirings 9 are branched to control the controlled terminal 7D of the relay 7.
It is connected to 1, 7D2. The column wiring 10 is also branched and connected to the controlled terminals 7C1 and 7C2. Part of the row control line 12 is cut off and connected to the control terminals 7B1 and 7B2. That is, the row control line 12 and the coil 704 in the relay 7 are connected in series. Similarly, the column control line 13 is also connected to the coil 7 via the control terminals 7A1 and 7A2.
03 are connected in series.

FIG. 5 shows the connection relationship between the end relay 8, the column wiring 10, the column control line 13, the end control line 11, and the exchange connection cable 4. In the portion of the end relay 8 having the same configuration as that of the cross point relay 7, the head reference numeral 7 of the cross point relay 7 is replaced by 8. Part of the two column wirings 10 is cut to the controlled terminals 8C1 and 8C2, and 8D1 and 8D.
2 connected to each. These controlled terminals 8D1 and 8D
The column wiring 10 connected to 2 is connected to the exchange connection cable 4 at the end of the matrix board 1. Part of the column control line 13 and the end control line 11 are cut off and the control terminal 8A
1 and 8A2, and 8B1 and 8B2, respectively. That is, the column wiring 10 and the electrodes in the relay 8, the column control line 13 and the coil 803, and the end control line 11 and the coil 8 are connected.
04 are connected in series.

Next, the operation principle of the matrix type MDF of this embodiment will be described. First, a method of using as a normal MDF (connection / disconnection between the subscriber cable 3 and the exchange connection cable 4) will be described. At this time, the same method as the normal matrix switch is used. That is, in the case of a new subscription, it is sufficient to couple the subscriber cable 3 and the exchange connection cable 4 one by one, so that a positive current pulse from the controller 2 is applied to the corresponding column control line 13 and row control line 12. Stream at the same time. Then, a current simultaneously flows through the two coils 703 and 704 of the intersection relay 7 at the intersections of the control lines 12 and 13, so that only the relays 7 at the intersections operate. As a result, the intersection relay 7 closes the circuit (contact), and a set of the row wiring 9 and the column wiring 10 can be connected. When canceling the subscription, the corresponding column control line 13 and row control line 1
When a negative current pulse is applied to 2 at the same time, the contact of only that portion is opened and the corresponding row wiring 9 and column wiring 10 are disconnected.

Next, a method of connecting the subscriber cables 3 to each other in the MDF will be described. In this case, in addition to simply connecting the subscriber cables 3 to each other, it is necessary to disconnect the exchange connection cable 4 from the subscriber cable 3 in order to prevent external interference. That is, for the corresponding subscriber cable 3, the connection between the row wiring 9 and the column wiring 10 by the intersection relay 7 and the disconnection between the column wiring 10 and the exchange connection cable 4 by the end relay 8 are performed. You have to do one task.

When the MDF is composed of a normal matrix switch, since all relays have the same polarity, disconnection and connection cannot be performed at the same time, and at least two operations are required. Then intersection relay 7 and end relay 8
Since the polarities of are opposite, disconnection and connection are completed in one operation.

The procedure for connecting two subscriber cables 3 is shown in FIGS. 7 (a) and 7 (b). In the initial state,
As shown in (a), the intersection relays 7a and 7d and the end relays 8a and 8b are closed, and the intersection relays 7b and 7c are opened. That is, the column wiring 10a and the row wiring 9a are connected,
Further, the column wiring 10b and the row wiring 9a are connected, and these are further connected to the exchange connection cables 4a and 4b.
Actually, the row wiring, the column wiring, and the exchange connection cable 4 are two sets, but one set is shown in FIG. 7 for the sake of simplification of the description.

Next, as shown in FIG. 7B, a positive current pulse is simultaneously applied from the control device to the control lines corresponding to the row wirings 9a and 9b and the column wirings 10a and 10b and the end control line 11. In addition, the intersection relays 7a-7d close the circuit and the end relays 8a, 8b open the circuit. As a result, the row wirings 9a and 9b are coupled to the column wirings 10a and 10b, and the exchange connection cables 4a and 4b are connected to the column wirings 10a and 10b.
To give the desired binding state. Here, the intersection relays 7a and 7d are closed before the current pulse is applied, but since these electromagnet cores follow the path of E-C-E in FIG. 3, the open / closed state is maintained even if the current pulse is applied. It does not change. Further, in the relay not shown in FIG. 7, since the current does not flow in both coils, the open / closed state does not change.

Next, a case where the connection between the subscriber cables 3 is released from the state of FIG. 7B will be described. In this case, not only the disconnection but also the connection between the subscriber cable 3 and the exchange connection cable 4 must be performed. If these are performed by a normal matrix relay, for example, when the number of subscriber cables 3 is two, at least three operations are required.
The MDF of this embodiment is completed in two times.

The procedure is shown in FIGS. 7 (c) and 7 (d).
First, as shown in (c), negative current pulses are simultaneously applied to the control lines and the end control lines 11 corresponding to the row wirings 9b and the column wirings 10a. Then, the intersection relay 7b opens the circuit and the end relay 8a closes the circuit.

Next, as shown in (d), a negative pulse current is simultaneously applied to the control line and the end control line 11 corresponding to the row wiring 9a and the column wiring 10b. Then, the intersection relay 7c opens the circuit and the end relay 8b closes the circuit. As a result, similarly to (a), the row wiring 9a and the column wiring 10a,
A connection state between the row wiring 9b and the column wiring 10b is obtained, and the processing is completed by performing the operation twice.

In the above example, the case of connecting / disconnecting between two subscriber cables was shown, but in the case of three or more cables, the processing is performed once less than in the case of a normal matrix relay. Is completed.

Further, in the above, the connection / disconnection of the intersection of the row wiring and the column wiring was performed by the relay. However, in addition to this, in the conventional matrix board type automated MDF, a new connection point is provided between the matrix pin board and the switch connection cable. It is also possible to provide a pin insertion type contact with.

[0040]

As described above, according to the present invention, the subscriber cables can be directly connected to each other in the MDF, and at that time, the subscriber cables can be disconnected from the exchange connection cable, so that interference from the outside can be prevented. Can be removed. As a result, although it is within a limited area, broadband communication can be performed by the existing telephone line, and moving image transmission and high-speed communication between computers can be realized at low cost.

Further, an intersection relay is used for connecting / disconnecting the intersection of the row wiring and the column wiring to which the subscriber cable and the exchange connecting cable are connected, an end relay is used for connecting / disconnecting the exchange connecting cable, and both relays are used. By adopting a structure in which the polarity of the control unit is reversed, it is possible to connect / disconnect the subscriber lines in a short time.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an entire matrix type MDF according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a structure of an intersection relay used in the matrix type MDF.

FIG. 3 is a characteristic diagram showing a magnetization characteristic of an electromagnet core used in the intersection relay.

FIG. 4 is an explanatory diagram showing a connection relationship between the intersection relay and wiring.

FIG. 5 is an explanatory diagram showing a connection relationship between an end relay and wiring.

FIG. 6 is an explanatory diagram of an operation sequence of relays when connecting / disconnecting subscriber cables from each other.

[Explanation of symbols]

1: matrix board, 1A: first layer, 1B: second layer,
1C: Layer 3, 2: Control device, 3: Subscriber cable,
4: exchange connection cable, 5: telephone, 6: exchange,
7, 7a to 7d: intersection relay, 7A1, 7A2, 7B
1, 7B2: control terminal, 7C1, 7C2, 7D1, 7D
2: controlled terminal, 701: permanent magnet, 702: electromagnet core, 703, 704: coil, 705, 706: electrode,
707: magnetic pole, 708, 709: electrode, 710: magnetic pole,
711, 712: leaf springs, 8, 8a, 8b: end relays, 9, 9a, 9b: row wiring, 10, 10a, 10b:
Column wiring, 11: end control line, 12: row control line, 13: column control line.

Claims (2)

[Claims] 1. A matrix type MDF having row and column wirings for connecting a subscriber cable and an exchange connecting cable, wherein a switch means for controlling connection / disconnection of the exchange connecting cable is provided. Form MDF. 2. A self-latch type summing relay for performing connection / disconnection of contacts only when two signals having the same polarity are simultaneously applied to the two controllers, wherein the summing relay is the row or column. It is used as an intersection relay that controls connection / disconnection at the intersection of the wirings and an end relay as the switch means. One of the intersection relay and the end relay is added by applying the same polarity signal to the two control units. The matrix type MDF according to claim 1, wherein one of the contacts connects the contact and the other disconnects the contact.