JPH06339158A - Relay drive system and MDF circuit - Google Patents

Abstract

(57) [Summary] [Purpose] When selectively driving any one of a large number of relays, the selection range is expanded, liberated, extended in life, and downsized in the intermediate stage of selection. Remote controllable M
Configure the DF. [Configuration] A latch relay LR _ab0 to be selected is arranged at each intersection of the X coordinate, Y coordinate and Z coordinate, and a photo coupler PC _ab0 for recovery driving and operation driving of the relay LR _ab0 is provided at each intersection of the X coordinate and the Y coordinate. , A light emitting element of PC _ab1 is arranged, and the relay LR _ab0 is selectively driven by a combination of the light receiving element paired with the light emitting element and a Z coordinate. Further, the contacts of the relay LR _abc are arranged and expanded at the intersections of the MDF incoming and outgoing lines to form an MDF circuit.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selective drive system for a large number of relays and an MDF circuit using the same.

[0002]

2. Description of the Related Art In the prior art, when selectively driving any one of a large number of relays, a method is generally used in which X-coordinates, Y-coordinates, and Z-coordinates are designated and the relays at their intersections are selectively driven. In the order of selection, first, a relay at the intersection of the X coordinate and the Y coordinate is selectively driven, and then the contact of the relay and the designation of the Z coordinate are combined to finally selectively drive one relay.

[0003]

In the prior art, as described above, the relay designated by the X-coordinate and the Y-coordinate is selectively driven in the preceding stage, which finally drives and drives 1 relay from among a large number of relays. .

Since the relay is interposed in the middle of the selecting operation, the number of contacts that can be mounted on the relay is limited when the contact of the relay and the Z coordinate are combined, and thus the number of relays that can be finally selected is limited. .

Further, since the relay operates every selection operation, a long life is required and a driving current is larger than that of a semiconductor element, so that a relatively large current control element is required for driving the relay.

Further, the relay requires a large number of contacts in order to expand the selection range as much as possible, and the shape is large, which is disadvantageous in the design of the mounting structure.

The present invention is proposed in order to solve such a problem, and expands the selection range of the relay selection circuit, improves the flexibility of the switch configuration, extends the life, reduces the drive current, and downsizes. It is another object of the present invention to realize a novel MDF circuit by using this relay selection method.

[0008]

In order to achieve the above object, the present invention arranges a light emitting element of a photocoupler at each intersection of an X coordinate and a Y coordinate, and receives light in pairs with the light emitting element of the photocoupler. By combining the element with the Z coordinate and specifying the X coordinate, Y coordinate, and Z coordinate, any one of multiple relays can be selected.
It is designed such that the individual pieces are selectively driven.

When a latch relay is used as the relay to be selected, two photocouplers arranged at each intersection of the X coordinate and the Y coordinate are provided at each intersection, and one photocoupler is provided for each operation of the latch relay. Corresponding to the restoration, by designating the X coordinate, the Y coordinate, the Z coordinate, and the operation or restoration of the latch relay, any one of the latch relays is selected to drive the operation or restoration. .

In the method using the latch relay, the contacts of the latch relay are arranged in a matrix form, and the connection of the incoming line and the outgoing line is arbitrarily made by opening and closing the contacts of the latch relay to form an MDF circuit. It was done.

[0011]

In the present invention, since no relays are used in the process of selecting a large number of relays and all semiconductors are used, the degree of freedom in the circuit configuration is large, the life of the semiconductor is long, the driving current of the control unit is small, and the power consumption is small. It becomes possible to reduce the size and weight of the mounting structure.

Further, unlike the conventional connection release between the incoming and outgoing lines by the jumper wire, the MDF circuit by the latch relay configured by the relay driving method according to the present invention releases the connection between the incoming and outgoing lines by opening and closing the contacts of the latch relay. Therefore, the MDF circuit can be remotely controlled by remotely controlling the latch relay. It is also possible to improve the responsiveness of connection opening between the incoming and outgoing lines and miniaturization of the MDF.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a first embodiment of the present invention in which light emitting elements, light receiving elements and relays of a photocoupler are arranged in a matrix and the correspondence with X, Y and Z coordinates is shown diagrammatically. It is a thing.

FIG. 2 is a second embodiment of the present invention, in which two relays are used as latch relays and two photocouplers are used in response to the recovery of the operation of the latch relays. It is a thing.

FIGS. 3, 4 and 5 are circuit diagrams showing an example in which the present invention is applied to an MDF circuit, and FIG. 3 is shown in FIG. 2 (1).
, FIG. 4 shows the parts (2), (3), (4), and (5) shown in FIG. 2, and FIG. 5 shows the matrix connection by the contacts of the latch relay.

In FIG. 1, (1) shows a matrix in which the X-coordinates correspond to 0 to k and the Y-coordinates correspond to 0 to m, and the light emitting elements of the photocouplers are arranged at the respective intersections.

PC _ab represents a photocoupler light emitting element whose X coordinate corresponds to a and whose Y coordinate corresponds to b. (2) the photo coupler light-emitting device PC of (1) the photocoupler light-emitting element and a pair of (with) the PC _ab ofヽlight receiving element in the matrix indicates a matrix receiving elements arranged at the intersections of (1) _ab
A light receiving element paired with is shown. The same symbol is used for a pair of light emitting element and light receiving element in one photocoupler.

(3) to (5) show a relay matrix in which relays are arranged at respective intersections on the XY coordinates corresponding to Z coordinates 0 to n. Among these, in (4), the Z coordinate is c. R _abc is a relay matrix corresponding to the photocoupler light receiving element PC _ab of (2) and c of Z coordinate, that is, a relay corresponding to X coordinate a, Y coordinate b, and Z coordinate c. .

In FIG. 2, (1) has an X coordinate of 0 to k,
PC _ab0 is an X-shaped matrix in which the Y-coordinates correspond to 0 to m, and the light-emitting elements of the photocouplers are arranged at the respective intersections corresponding to the operation and the restoration, and PC _ab0 is X
The photocoupler light emitting element corresponding to the restoration instruction is shown with the coordinates a and the Y coordinate b, and PC _ab1 indicates the photocoupler light emitting element with the X coordinate a and the Y coordinate b corresponding to the operation designation.

(2) shows a set of (2) matrixes in which the photocoupler light emitting element of (1) and a pair (light) of light receiving elements are arranged at each intersection, and PC _ab0 is the photo of (1). The light receiving element paired with the coupler light emitting element PC _ab0 is shown, and similarly, PC _ab1 is the light receiving element paired with the photo coupler light emitting element PC _ab1 of (1).

(3) to (5) show a relay matrix in which a coil of a latch relay is arranged at each intersection on the XY coordinates corresponding to the Z coordinate of 0 to n, of which (4) is Z. A coordinate shows a relay matrix of c, and LR _abc shows a latch relay corresponding to the photocoupler light receiving elements PC _ab0 and PC _ab1 of (2) and C of the Z coordinate.

FIGS. 1 and 2 show matrix arrangements of photocouplers and latch relays of the concrete circuits shown in FIGS. 3 and 4, and the following description can be easily understood with reference to FIGS. 1 and 2. FIG. 1 shows a simplified version of FIG.

In FIG. 3, X ₀ , X _a and X _k are designated leads for designating 0, a and k of the X coordinate, and Y.
_0, Y _b and Y _m are designation leads for designating 0, b and m of the Y coordinate, RL is a restoration designation lead of the latch relay, and OP is an action designation lead of the latch relay.

PC ₀₀ , PC _a0 and PC _k0 are restoration designated photocouplers whose P-coordinates correspond to O, a and k, respectively, and P.
C ₀₁ , PC _a1 and PC _k1 are operation designation photocouplers whose X coordinates correspond to O, a and k, respectively, and PC _ab0 has X coordinate
PC, _ab1 is a designated recovery photocoupler with _a and Y coordinates of b.
The operation designation photocoupler has coordinates a and a Y coordinate b.

Similarly, for other PC _pqr , the suffix is the X coordinate from the left, the Y coordinate, and the restoration / operation (restoration is 0,
It is shown that the operation corresponds to the designation of 1), and two photocouplers are arranged at each intersection of the X coordinate and the Y coordinate corresponding to the restoration operation designation.

In FIG. 4, Z ₀ , Z _c, and Z _n are designated leads for designating 0, c, and n of the Z coordinate, RL is a drive lead for restoration of the latch relay, and OP is for operation of the latch relay. Drive lead, PC _ab0 and PC _ab1
3 is a photocoupler light receiving element paired with the photocoupler light emitting elements PC _ab0 and PC _ab1 in FIG. 3, and other photocouplers are similarly paired with the photocoupler light emitting element having the same symbol in FIG. A light receiving element is shown.

LR _abc is a photo coupler PC _ab0 and PC
_{It is shown that ab1} and a latch relay in which the Z coordinate corresponds to c result in the X coordinate corresponding to a, the Y coordinate corresponding to b, and the Z coordinate corresponding to c.

Similarly, the other latch relays LR _pqr also show that the suffixes correspond to the X coordinate, the Y coordinate and the Z coordinate from the left.

In FIG. 5, LINE indicates an incoming line (line side) of the MDF, and SW indicates an outgoing line (inside the station). The two 8x8 contact matrixes in this figure show that any number of eight incoming lines and eight outgoing lines can be connected by closing their crosspoints.

007-707, 01-7-717 on the incoming line side
16 contacts and 027 to 727, 037 on the outgoing side
The 16 contacts of 737 are test contacts for incoming and outgoing lines. By closing any one of these contacts, an arbitrary incoming side or outgoing side is connected to the test terminal TEST for testing. At the time of the test, the cross point of the relevant line of the 8 × 8 contact matrix is opened and control is performed so that the incoming line and the outgoing line are separated.

In FIG. 5A, the cross point 771 is shown as an example in which the 1 cross points are specifically composed of 2 make contacts. The lr 771 is arranged in the cross point 771. Latch relay LR771
Represents the make contact of.

The operation of the embodiment will be described with reference to FIGS.

Latch relays LR _{000 to} LR shown in FIG.
_An example is shown in which one LR _abc in 1 _mn is selectively driven.

In FIG. 3, when the control unit selects the X coordinate designation lead _Xa (designates _{a on the} X axis) and the action designation lead OP, the following is performed.

OP lead--Photocoupler light emitting element--
The photocoupler light emitting element emits light in the circuit of the X _a lead, and the photocoupler light receiving element PC _a1 paired with the photocoupler light emitting element becomes conductive.

Next, the control unit reads the Y coordinate designation lead Y _b (Y
When (designate axis b) is selected, the combination with the above operation is as follows.

Y _b lead _--- diode _--- photo coupler light emitting element PC _{ab1 ---} photo coupler light receiving element PC _a1-
-X _a light receiving element PC circuit photocoupler light-emitting element PC _ab1 is emitted thereto and pairs of leads (marked) _ab1 (shown in FIG. 4) becomes conductive.

Next, in FIG. 4, when the Z _c lead (designating C of the Z axis) of the control drive unit is selected and a negative power source is connected to the OP lead, the negative power source is turned on in combination with the above operation. It looks like this:

Z _c lead _--- latch relay LR _{abc ---}
Diode --- Photocoupler Light receiving element PC _ab1 --- OP
Latch relay LR _{abc by} applying pulse current to reed circuit
To operate.

The latch relay LR _abc thereafter holds the operating state with no current and continues the operating state until a restoration pulse (pulse having a polarity opposite to that of the operating pulse) is passed.

The control when the latch relay LR _abc is restored is the same as when the latch relay LR _abc is operated, and the selection of the X coordinate, the Y coordinate and the Z coordinate is performed as X _a , Y _b and Z.
Select _c lead, and RL instead of OP lead if different
This is the point at which the lead is selected and the positive power source is connected. That is, X _a lead and RL leads 3 are selected as follows.

RL lead--photocoupler light emitting element PC
_a0 → In the circuit of X _a lead emitting light photocoupler light-emitting element PC _a0, light receiving element PC _a0 of this pair (marked) becomes conductive. Then, when Y _b leads are selected, as it follows in combination with the operation.

Y _b lead → _{-diode ---} photocoupler light emitting element PC _{ab0 ---} photocoupler light receiving element PC _a0-
In the circuit of -X _a lead emitting light photocoupler light-emitting element PC _ab0, the photocoupler light-receiving element PC of a pair therewith (attached)
_ab0 (shown in FIG. 4) becomes conductive.

Next, when the Z _c lead of the control drive section is selected in FIG. 4 and the positive power source is connected to the RL lead, the following operation is performed in combination with the above operation.

RL lead--photocoupler light receiving element PC
_ab0 - Diodes - latching relay RL _a b ₀ --Z
the case of operating the latch relay RL _abc in the circuit of _c leads passing a pulse current of opposite polarity, thereby recovering the latching relay RL _abc.

By the above method, the latch relays LR _{000 to} LR can be selected by selecting the X coordinate, the Y coordinate, the Z coordinate and the operation recovery lead.
Select any one of _kmn to control operation or restoration.

FIG. 5 shows an MDF circuit using the contact groups of the latch relay shown in FIG. 4, and shows that any combination of incoming and outgoing lines can be set by the control method described above.

In FIG. 5, the incoming line and the outgoing line are each divided into two groups to form an incomplete group, but in addition to this, a method of constructing one complete group or another common link is provided between the incomplete groups. The combination of contacts such as method can be set freely.

In the above description, the relay to be selected has been described as a latch relay, but in the case of a normal relay (in the case of FIG. 1), X is used.
in response to designation of _a coordinate and Y _b coordinates place l pieces of the photocoupler light-emitting element PC _ab in the intersection, the photocoupler light-receiving element PC _ab and Z _c coordinates of the photocoupler light-emitting element and the pair (marked) The selected combination drives the relay R _abc .

[0050]

As described above, according to the present invention, in the process of selecting one of a large number of relays, a photocoupler is used instead of the expansion by the relay. Therefore, the range of relays to be selected can be expanded, the degree of freedom in selecting combinations can be expanded, the life can be extended by using a semiconductor, the drive current can be reduced in capacity, and the mounting structure can be reduced in size and weight.

Further, according to the MDF circuit of the present invention, the latch relay can be driven by remote control.
Remote control of F becomes possible.

Further, connection / disconnection between the incoming line and the outgoing line can immediately meet the user's request, and the MDF can be further downsized.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a photocoupler and relay matrix according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram corresponding to X, Y, and Z coordinates of a matrix of a photocoupler and a relay according to an embodiment of the present invention.

FIG. 3 is a circuit diagram of a relay drive circuit according to an embodiment of the present invention.

FIG. 4 is a circuit diagram of a relay drive circuit according to an embodiment of the present invention.

FIG. 5 is a circuit diagram of an MDF circuit according to an embodiment of the present invention.

[Explanation of symbols]

PC _pq , PC _pqr … Photo coupler R _pqr … Relay coil LR _pqr … Latch relay coil rl _pqr … Latch relay contact X _{0 to} X _k … X coordinate designation lead Y _{0 to} Y _m … Y coordinate designation lead Z ₀ ~ Z _n ... Z coordinate designation lead RL ... Drive lead when latch relay is restored OP ... Drive lead when latch relay is operating

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Sasaki 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation (72) Hideaki Takahashi 1-6-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Toshio Ishibashi 2-18-2 Nishigotanda, Shinagawa-ku, Tokyo Hasegawa Electric Works Co., Ltd.

Claims (3)

[Claims] 1. A relay is arranged at each intersection of X-coordinates, Y-coordinates and Z-coordinates, and a light-emitting element of a photocoupler is arranged at each intersection of the X-coordinates and the Y-coordinates. A relay driving method in which the light receiving element (a) is combined with the Z coordinate and any one of the relays is selected and driven by designating the X coordinate, the Y coordinate, and the Z coordinate. . 2. The relay drive system according to claim 1, wherein latch relays are arranged at intersections of X-coordinates, Y-coordinates, and Z-coordinates, and photocouplers arranged at intersections of the X-coordinates and Y-coordinates, respectively. Two pieces are provided for each intersection, and each one of the photocouplers is associated with the operation and restoration of the latch relay, and the designation of the X coordinate, the Y coordinate and the Z coordinate and the designation of the operation or restoration of the latch relay. The relay drive system is adapted to drive the operation or the recovery by selecting any one of the above latch relays. 3. An MDF circuit using the relay driving method according to claim 2, further comprising an input / output line selection unit in which contacts of the latch relay are arranged in a matrix and a selection driving unit of the latch relay, An MDF circuit in which a contact of an input / output line selection unit is opened / closed by selectively driving the latch relay from a selection drive unit to arbitrarily connect the input / output line.