KR100202977B1 - Conjunction apparatus between two connectors - Google Patents

Abstract

The present invention relates to a matching device between a redundant board that can be provided on a functional board having a redundant structure and an RS-232C connector on a back board, and the matching device includes a function having respective redundancy control units to implement a redundant structure. In a matching device between a board and a connector provided on a back board, performing a predetermined function of a function board, outputting predetermined data as a TTL level signal according to performing a predetermined function, and receiving a TTL level signal transmitted from the connector side. A function performing unit for converting the TTL level signal output from the function performing unit into an electrical signal formed by the communication method adopted by the connector, and converting the electrical signal transmitted from the connector side into a TTL level signal for transmission to the function performing unit. Signal conversion unit; is linked by the active / standby mode control signal output from the redundancy control unit No. converting is configured to include a relay for forming a path between the part and the connector.

Description

Matching device between the redundant board and the connector on the back board

The present invention relates to a matching device between a board having a redundant structure and a connector on a back board, and more particularly, to a matching device between an RS-232C connector provided on a board having a redundant structure and a back board.

In electronic devices such as exchangers, most of the important function boards are configured in a redundant structure so that the boards which are in use in the standby mode when the abnormal state occurs can be operated in an active state and continue to provide the corresponding functions.

As such, between the redundant boards and the data terminal equipment (hereinafter referred to as DTE) or data circuit terminating equipment (hereinafter referred to as DCE) connected through the connectors provided on the back board. In order to transmit and receive data, a conventional matching board is provided between the functional boards and the connector. In this case, DTE is the final terminal device in the data transmission section, and the final processing of data on the communication line. Usually, CRT, PC, and printer, etc., DCE is an intermediate device for data transmission. By giving, it is usually modem or mux.

1 is a system block diagram of a conventional redundant board having a matching board separately between a connector on a backboard and a function board as described above, and a matching device between connectors on the backboard, illustrating an example in which an RS-232C connector is used. It is.

Referring to Figure 1, the matching process between the conventional redundant board and the connector on the back board will be described. That is, when the TTL level signal to be communicated through the RS-232C connector 150 on the back board is output from the first and second functional boards 100 and 110 having a redundancy structure, it is transmitted to the multiplexing logic circuit 120. The multiplexing logic circuit 120 selects and transmits a TTL level signal output from a function board driving in an active mode among the first and second function boards 100 and 110. The transmitted data is transmitted to the RS-232C transceiver 130. The RS-232C transceiver 130 converts the TTL level signal transmitted from the multiplexing logic circuit 120 into an electrical signal of the RS-232C and outputs the converted signal. The electrical signal of the output RS-232C is transmitted to the DTE / DCE mode selection unit 140. The DTE / DCE mode selection unit 140 configures a transmission path differently according to a device to be connected through the connector 150 to transmit an electrical signal transmitted from the RS-232C transceiver 130 to the RS-232C connector 150 on the backboard. To send.

On the contrary, when an electrical signal of the RS-232C method is applied through the RS-232C connector 150 on the back board, the RS-232C transmitter 130 is transmitted through the transmission path set in the DTE / DCE mode selection unit 140. Is sent. The RS-232C transceiver 130 converts an applied RS-232C type electrical signal to a TTL level and transmits the electrical signal to the multiplexing logic circuit 120. The multiplexing logic circuit 120 is configured as a duplex unit. The TTL level signal is transmitted to the functional board operating in the active mode among the functional boards 100 and 110.

As such, the matching device provided for transmitting and receiving data between the board having a redundancy structure and the RS-232C connector on the back board is provided separately from the function boards as shown in FIG. 1, and thus, between the function boards and the matching device. The system structure is complicated, such as the need to have a cable of.

Accordingly, an object of the present invention is to provide a matching device between a redundant board and a connector, which can be provided in a functional board having a redundant structure.

In order to achieve the above object, the matching device according to the present invention performs a predetermined function of a function board in a matching device between a function board having a redundancy control unit and a connector on a back board so as to implement a redundancy structure. A function performing unit for outputting predetermined data according to the performance as a TTL level signal and receiving a TTL level signal transmitted from the connector side; an electrical system comprising a communication method employing a TTL level signal output from the function performing unit at the connector A signal converter for converting a signal, converting an electrical signal transmitted from the connector side into a TTL level signal, and transmitting the signal to a function performing unit; interlocked by an active / standby mode control signal output from the redundancy control unit and interfacing between the signal converter and the connector. It characterized in that it comprises a relay for forming a path.

1 is a block diagram of a system including a matching device between a conventional redundant board and an RS-232C connector.

2 is a system block diagram having a matching device between a redundant board and an RS-232C connector according to the present invention;

* Description of the symbols for the main parts of the drawings *

200: first functional board 210: second functional board

201 and 211: first and second redundancy control units 202 and 212: first and second RS-232C transceivers

203, 213: 1st, 2nd relay 204, 214: 1st DTE / DCE mode selection part

220: RS-232C connector

The above and other objects and various advantages of the present invention will become apparent from the following description of the preferred embodiment.

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

2 is a system block diagram having a matching device between a redundant board and a connector on a back board according to the present invention, wherein the first functional board 200 and the second functional board 210 having a redundant structure are connected to the RS-232C connector 220. An example of transmitting and receiving data through) is illustrated.

2, a matching device according to the present invention is provided in each functional board having a redundant structure. That is, the first functional board 200 having a redundant structure performs a corresponding function and outputs and receives data to be transmitted / received through the RS-232C connector 220. A first RS-232C for converting the TTL level signal output from the 201) into an electrical signal of the RS-232C, and converting the electrical signal of the RS-232C into a TTL level signal to be transmitted to the first functional unit 201. RS-232C connector 220 is controlled by the transceiver 202, the first redundancy controller 203 for controlling the redundancy state between the function board and the counterpart function board, an operator or a processor (not shown) in the board. A first DTE / DCE mode selection unit 205 and a first redundancy control unit 203 for setting a path between the first function board 200 and the RS-232C connector 220 and transmitting data according to the device mode to be connected via the device mode. RS-232C transmission by interlocking with active / standby mode control signal output from 202 and is configured to include a first relay (204) to form a path between the DTE / DCE mode selection unit 205. The The second function board 210 also performs a function similar to that of the first function board 200, the second function performing unit 211, the second RS-232C transceiver 212, the second relay 214, and the first function board 210. And a second redundancy control unit 213 and a second DTE / DCE mode selection unit 215.

This embodiment configured as described above is driven as follows.

First, an example in which the first functional board 200 is in an active state and the second functional board 210 is in a standby state will be described.

Since the first functional board 200 is active, the first redundancy controller 203 controls active / standby mode to form a path for transmitting and receiving data between the first functional board 200 and the RS-232C connector 220. Output a signal to indicate that it is active. The output active / standby mode control signal is transmitted to the first relay 204.

The first relay 204 is set on by the active / standby mode control signal transmitted from the first redundancy control unit 203 so that the first RS-232C transceiver 202 and the first DTE / DCE mode selection unit ( It connects the passage between 205).

On the other hand, since the second function board 210 is in the standby state, the active / standby mode control signal output from the second redundancy control unit 213 is output to indicate that it is in the standby mode. In response to the active / standby mode control signal outputted as described above, the second relay 214 is set to the off state to short-circuit the path between the second RS-232C transmitter / receiver 212 and the second DTE / DCE mode selector 215. Let it be.

When a predetermined TTL level signal is output from the first function execution unit 201 in the first function board 200 in the state in which the passage is formed, it is transmitted to the first RS-232C transceiver 202. The first RS-232C transceiver 202 converts the TTL level signal into an electrical signal of RS-232C and outputs the converted signal. The output signal is transmitted to the first DTE / DCE mode selector 205 through the first relay 204 set to the ON state, and the first DTE / DCE mode selector 205 transmits the transmitted RS-232C. The electrical signal is transmitted to the RS-232C connector 220.

When data is transmitted to the first function board 200 through the RS-232C connector 220, the data is transmitted in the reverse order to the above-described process. As described above, when data is transmitted in the reverse order, the first RS-232C transceiver 202 converts the electrical signal of the RS-232C transmitted through the first relay 204 into a TTL level signal to convert the electrical signal of the RS-232C into a TTL level signal. 201).

As described above, when the second function board 210 is set to the active state due to the occurrence of an abnormal state while the first function board 200 is set to the active state, the second relay 214 is the second redundancy control unit 213. The first relay 204 is set to the off state by the first redundancy control unit 203 to transmit / receive data between the second function board 210 and the RS-232C connector 220. Form a passageway.

The process of transmitting and receiving data between the second function board 210 and the RS-232C connector 220 through the formed passage is the same as the process of transmitting and receiving data between the first function board 200 and the RS-232C connector 220 described above.

As described above, the present invention implements a circuit such that matching processing between a functional board having a redundant structure and a connector on the back board is performed in each functional board by using a relay, and thus a redundant board configured to transmit and receive data through a connector on the back board. There is an effect that can simplify the internal structure of the system having a.

In addition, the present invention has been described for example the matching process between the RS-232C connector and the redundant board provided on the back board as described above, but those skilled in the art will appreciate that various changes and modifications are possible without departing from the technical spirit of the present invention. You will see that it is possible. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (4)

In the matching device between the functional boards (200, 210) having the respective redundancy control unit (203, 213) and the connector (220) on the back board to implement a redundant structure, Perform a function to perform a predetermined function of the function boards 200 and 210, output predetermined data according to the execution of the predetermined function as a TTL level signal, and receive a TTL level signal transmitted from the connector 220. Parts 201 and 211; Converts the TTL level signal output from the function performing unit 201, 211 into an electrical signal formed by a communication scheme employed by the connector 220, and converts the electrical signal transmitted from the connector 220 side to the A signal converter (202, 212) for converting into a TTL level signal for transmission to the function performing unit (201, 211); And relays 204 and 214 for forming a path between the signal converters 202 and 212 and the connector 220 by being linked by an active / standby mode control signal output from the redundancy controllers 203 and 213. Matching device between the redundant board and the connector on the back board. The method of claim 1, The matching device is a device for transmitting and receiving data with the function board through the connector 220 between the relays 204 and 214 and the connector 220, and a data terminal device (DTE) and a data circuit termination device (DCE). And a device mode selection unit (205, 215) for selecting one of the matching devices between the redundant board and the connector on the back board. The method of claim 2, And the function performing unit, the signal converting unit, the relay, and the device mode selection unit are provided in the corresponding function board. The method according to claim 1 or 2, When the connector 220 is an RS-232C connector, the signal converters 205 and 215 convert the TTL level signal into an electrical signal of the RS-232C method and transmit the converted signal to the relay 204. Matching device between the redundancy board and the connector on the back board, characterized in that configured to convert the RS-232 type electrical signal transmitted from the relay (204) to a TTL level signal to the function performing unit.