KR100921765B1 - Optical fiber protection system - Google Patents

Abstract

Disclosed is a switching address-embedded optical fiber switching system.

When a system is formed by attaching a plurality of transfer modules to a single transfer management module, each transfer module is assigned a unique address distinguishable from the transfer management module. The assigned address is inserted into each piece of information for transmission between the transfer module and the transfer management module. After active maintenance and frequent installation and removal of individual modules are required for active fiber management, since the addresses are built into each switching module, the address of the removed switching module is inserted as it is when a new switching module is installed. I need to do it. If the address is not specified correctly, various problems may occur in communication with the transfer management module and in optical fiber management.

In the present invention, regardless of the transfer module to be inserted, by specifying the address information for each transfer module on the backplane (Back Plane) board of the transfer system, that is, the unique identification number that can identify the electrical signal of each transfer module backplane By assigning it to the board, even if the transfer module is replaced, the address can be fixedly recognized regardless of the position of the optical line.

Description

Fiber Optic Switching System with Built-in Switching Address {OPTICAL FIBER PROTECTION SYSTEM}

1 is a schematic block diagram of a switching address-embedded optical fiber switching system according to a preferred embodiment of the present invention;

FIG. 2 is a detailed configuration diagram of the light beam switching module of FIG. 1.

<Explanation of symbols for the main parts of the drawings>

10: transfer management module 20: optical fiber transfer module

21: address power input unit 30: backplane board

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer module designation technique in an optical fiber transfer system, and more particularly, to an optical fiber transfer system with a built-in transfer address suitable for automatically switching an optical fiber connected to an optical transceiver.

The optical fiber switching system is a device that can be used to adequately cope with problems in the optical path due to accidents and disasters by providing one or multiple spare optical paths in the absence of protection on the optical path in the multiple optical fiber networks. In other words, when the optical fiber network is monitored and an accident occurs, the optical fiber distribution board monitors the signal light and, if the optical signal is weak or absent, switches to a spare core.

Due to the nature of the equipment, line switching over multiple optical channels rather than a single optical channel can provide significant economic and administrative advantages.

Such a switching system is composed of a plurality of light beam changers and one or a few transfer management modules managing them. However, since a single optical fiber switching management module is a structure that requires integrated management of several switching modules, a unique identification number must be assigned to each individual switching module in order to properly manage each switching module. It is necessary to track and manage the optical paths connected to them from the assigned identification numbers so that the optical fiber switching system can function normally.

In the case of integrated management of multiple optical paths, the location and status of the management module should be monitored. At this time, the optical path destination, waypoint, management number, etc. are managed according to the position where the optical path is arranged.

In general, in the OFD part up to now, only the passive connection role has been performed. That is, the optical path to date has been connected to the optical path and the optical transmission and reception equipment by a passive optical distribution panel which directly connects the optical transmission and reception equipment to the fixed optical path.

In the conventional optical fiber switching system having such a passive optical distribution technology, not only the inconvenience of having to replace the switching module when monitoring multiple optical paths or always changing the address of the optical switching module when the operating program is replaced, The problem has been raised that an error can be specified specifying an incorrect address during replacement.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and provides an electrical device capable of recognizing an address of each switching module in a back plane portion of a line transfer system to identify a position of a module inserted into the backplane portion. It is an object of the present invention to provide a switching address-embedded optical fiber switching system for implementing a convenient and reliable switching module replacement technology.

According to a preferred embodiment of the present invention for achieving the above object, in the optical fiber switching system with a switching address built-in to connect the optical cable from the optical transmitting and receiving device and the optical cable connected to the main optical path and the spare optical path, the optical signal of the main optical path A plurality of switching modules configured to sense and transfer a communication line to a spare optical path when a predetermined level of optical power is not generated; A transfer management module which integrates and manages the transfer module, wherein the transfer state and general information of the transfer modules are notified; The present invention provides a switching address-embedded optical fiber switching system having a backplane board in which different address information is assigned to an address allocation portion of a pin connected to a switching module.

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

FIG. 1 is a schematic block diagram of a switching address-embedded optical fiber switching system according to a preferred embodiment of the present invention, and includes a switching management module 10, a light beam switching module 20, and a backplane board 30.

As shown, the transfer management module 10 serves to manage a plurality of transfer modules 20, the backplane board 30 is equipped with a plurality of such transfer modules 20.

The operating principle of the system configured as above is as follows.

First, the optical cable from the optical transmitting and receiving device and the optical cables connected to the main optical line and the spare optical line are connected to the optical line switching system, and the switching module 20 connected thereto detects the optical signal of the main optical line to provide an appropriate level of optical power. If not generated, the communication line is automatically switched to the spare beam. At this time, the state and general information to be transferred is notified to the transfer management module 10.

In order for such an apparatus to be practically applied, a plurality of transfer modules 20 may be mounted on a single transfer management module 10 to be usefully economically and administratively.

When a system is used by attaching a plurality of transfer modules to a single transfer management module 10, each transfer module 20 is assigned a unique address so as to be distinguished by the transfer management module 10. Needs to be. In this way, the assigned address may be communicated with the desired transfer module only when the communication between the individual transfer module 20 and the transfer management module 10 is performed while being inserted into each information.

However, a characteristic of the optical path management is that the line number must be assigned to a position where each optical path is unique. This is because there is no change because the management of the line number according to the position is fixed and passive, not the active optical line management module proposed in the present invention, but the passive optical line management used previously. If the active optical fiber management proposed in the present invention is carried out, post-maintenance and installation and detachment of individual modules will be more frequent than manual management systems in the management of switching modules. The problem with mounting and detachment is that if an address is built into each transfer module, the address of the detached module must be inserted as it is when the new transfer module is installed.

If a proper address is not specified at this time, a problem arises in communication with the transfer management module or management of the optical fiber.

In the present invention, by configuring the electrical circuit that can identify the address in the backplane board 30 of the switching system irrespective of the switching module to be inserted, even if the switching system is replaced, the address information can be fixedly recognized regardless of the position of the optical path. To be able.

That is, as shown in FIG. 2, the address information is transferred to the switching module 20 through the address power input unit 21 of the switching module 20.

In order to actually implement the above, 32 transfer modules 20 and one transfer management module 10 were configured. In this case, the backplane into which each switching module 10 is inserted is configured such that 32 switching modules from 1 switching module to 32 switching module can be inserted. Each of the transfer module 20 is inserted into the connection part of a predetermined portion to assign an address to be assigned to the backplane 30 from 0 to 32 sequentially.

This technical implementation process will be described in more detail with reference to Table 1 below.

TABLE 1

Connector number Address Pin Assignment (+ 5V, High = 1, GND, Low = 0) Address (Hex) J1 00000 00H J2 00001 01H J3 00010 02H J4 00011 03H J5 00100 04H J6 00101 05H J7 00110 06H J8 00111 07H J9 01000 08H J10 01001 09H J11 01010 0AH J12 01011 0BH J13 01100 0CH J14 01101 0DH J15 01110 0EH J16 01111 0FH J17 10000 10H J18 10001 11H J19 10010 12H J20 10011 13H J21 10100 14H J22 10101 15H J23 10110 16H J24 10111 17H J25 11000 18H J26 11001 19H J27 11010 1AH J28 11011 1BH J29 11100 1CH J30 11101 1DH J31 11110 1EH J32 11111 1FH

First, different addresses are set to high (1) and low (0) in the address allocation portion of the pin connected to the switching module 20 so as to assign an address according to each position to the backplane. The address set in this way is recognized by the CPU processor of the transfer module when the transfer module is inserted, and recognizes it as its own address. The recognized address is distinguished from other transfer modules when the transfer module 20 communicates with the transfer management module 10 and performs the state of the transfer module, alarms and alarms when the transfer occurs, and command recognition from the transfer management module. Recognized through the process.

In the actually applied circuit, the address is set from the switching module No. 1 (J1 connector) to the switching module No. 32 (J32 connector). The 11, 13, 15, 17, and 19 pins are allocated among the electrical signal pins of each connector and are connected with + 5V (high) and GND (low) signals as shown in [Table 1]. .

These address values read address pins from the transfer module 20 while the transfer module is mounted. At this time, the high state connected to + 5V and the low state connected to GND are recognized as addresses.

The recognized address is transmitted / received to the transfer management module 10 together with information on status monitoring and operation of the transfer module.

The proposed optical fiber switching system with fixed address structure is a new optical fiber active management device that enables active circuit switching while maintaining the passive management system based on the existing location. In this way, the existing management system can be maintained and the new line transfer function can be added to make the management of the line the same. The maintenance system can be the same. You can insert the system. Even when the switching module is changed, since the address is recognized on the backplane, there is no change in line number management or line information management according to the position of the backplane, so it can be easily applied to management and maintenance.

As mentioned above, although this invention was demonstrated concretely based on the Example, this invention is not limited to such an Example, Of course, various deformation | transformation are possible for it within the following Claim.

Claims (2)

In the optical fiber transfer system with a built-in switching address for connecting the optical cable from the optical transmitting and receiving device and the optical cable connected to the main optical path and the spare optical path, A plurality of switching modules configured to sense an optical signal of the main optical path and transfer a communication line to the spare optical path when a predetermined level of optical power is not generated; A transfer management module which integrates and manages the transfer module and which is notified of the state and general information of the transfer modules; And a backplane board to which different address information is assigned to an address allocation portion of a pin connected to the transfer module. The method of claim 1, The backplane board, Different address information is set to high or low, and when any of the transfer modules is inserted, an electric circuit for distinguishing between transfer modules is recognized by recognizing the unique address information of the transfer module to be inserted. Fiber-optic transfer system with built-in switching address.

Images