KR102631476B1 - Apparatus for monitoring disorder of optical line and method thereof - Google Patents

Abstract

The present invention discloses an optical line fault detection device and method. The optical line failure detection device of the present invention includes a fault point detection unit that measures the fault point and loss rate of the optical line and transmits status information; A database that stores optical line status information, management information, distribution information, and utility pole information transmitted from the fault point detection unit; And a fault point detection server that determines the fault state of the optical line based on the status information and management information of the optical line received from the fault point detection unit and outputs the fault state through an output unit based on the distribution information and utility pole information stored in the database. It is characterized by including.

Description

Optical line failure detection device and method {APPARATUS FOR MONITORING DISORDER OF OPTICAL LINE AND METHOD THEREOF}

The present invention relates to an optical fiber failure detection device and method. More specifically, for the stable operation of a high-speed power communication network, by monitoring disconnections and failures of optical fiber lines, quickly identifying the location of the fault, and reflecting and providing on-site information. , It relates to an optical line failure detection device and method that not only shortens the failure recovery time but also enables recognition of signs of failure in advance.

Recently, various communication devices have been developed and used, the number of Internet users is increasing, and data traffic is increasing exponentially with the emergence of new multimedia services. Accordingly, the entire network is evolving to be able to exchange large-scale data.

In particular, the amount of transmission in urban networks is increasing due to the explosive growth of the Internet, intranet, and extranet in dense urban areas, and optical communication technology is being used as a technology to resolve traffic due to the rapid increase in data transmission.

As an optical communication technology using optical fiber, there is Wavelength Division Multiplexing (WDM).

WDM is a method of simultaneously transmitting multiple channels through one optical path using light of different wavelengths. In the Wavelength-Division-Multiplexing (hereinafter referred to as WDM) optical communication system, it is transmitted through an optical communication channel. Transmit and receive light with different wavelengths.

In order to maintain and repair such a WDM optical transmission system, it is necessary to be able to easily measure the fault section for each channel of the optical fiber in the field, and an OTDR (Optical Time Domain Reflector-meter) is used as a means to inspect the communication status of these optical fibers. is being used,

OTDR uses a pulse as a signal to make an optical pulse incident on the optical fiber to be measured and detects Fresnel reflections at the breaking point or Rayleigh scattering within the optical fiber. Failure points or loss characteristics can be measured.

In general, the measurement part of an optical line monitoring system is equipped with an OTDR that actually measures the point of failure in the optical line and an optical switching unit that performs a switching function to select the optical core line to be measured using an electrical control signal.

At this time, since it is very disadvantageous in terms of construction cost to operate the system with OTDRs installed 1:1 on multiple optical core lines to be measured, it is necessary to connect the OTDR to an optical switching unit and use one OTDR to measure the operating program through measurement scheduling. Multiple optical cores are monitored through sequential automatic measurement or selective manual measurement of specific cores.

The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 2018-0098718 (published on September 5, 2018, optical line monitoring system using OTDR).

In the case of this type of optical line monitoring system, when a failure occurs in the optical line, it is impossible to remotely check and manage the point of failure through the network management system, and only information on the location of the fault for a wide area can be obtained, so go to the field and check the line status. By directly checking and measuring the fault point in the optical line through OTDR, the location of the faulty pole is identified. Not only does it take a lot of time to detect the location of the fault point in the optical line and determine the situation on site, but it also has the problem of predicting or prioritizing a fault in the optical line. There is a problem where the signs cannot be identified.

The present invention was made to improve the problems described above, and the purpose of the present invention is to quickly identify the fault point and provide on-site information by monitoring disconnection and failure of the optical line for stable operation of the high-speed power communication network. By reflecting and providing an optical line failure detection device and method that not only shortens the failure recovery time but also recognizes signs of failure in advance.

An optical line failure detection device according to one aspect of the present invention includes a fault point detection unit that measures the fault point and loss rate of the optical line and transmits status information; A database that stores optical line status information, management information, distribution information, and utility pole information transmitted from the fault point detection unit; And a fault point detection server that determines the fault state of the optical line based on the status information and management information of the optical line received from the fault point detection unit and outputs the fault state through an output unit based on the distribution information and utility pole information stored in the database. It is characterized by including.

In the present invention, the fault detection unit is characterized by a built-in OTDR (Optical Time Domain Reflector-meter).

In the present invention, the fault detection unit periodically measures the fault point and loss rate of the optical line and transmits the measurement to the fault detection server.

In the present invention, the fault detection server predicts and outputs failures according to the loss rate of the optical line through machine learning based on the status information and management information of the optical line.

In the present invention, the fault detection server is characterized by providing statistical analysis and graphs in the form of a GUI and a file based on the status information and management information of the optical line stored in the database.

In the present invention, the fault detection server is characterized by storing distribution information and utility pole information in a database in conjunction with NDIS (New Distribution Information System) and an integrated optical cable management system.

A control method of an optical line failure detection device according to another aspect of the present invention includes the steps of: a fault point detection server receiving information on the state of an optical line from a fault point detection unit; A fault detection server receiving information on the state of an optical line and storing it in a database; Determining the fault state of the optical line based on the state information of the optical line input by the fault point detection server and management information stored in the database; And a step of the fault point detection server outputting the fault state determination result through an output unit based on distribution information and utility pole information stored in the database.

In the present invention, the step of receiving the status information of the optical line is characterized in that the fault point detection server periodically receives the fault point and loss rate of the optical line from the fault point detection unit.

In the present invention, the step of determining the failure state of an optical line is characterized in that the fault point detection server predicts and determines a failure according to the loss rate of the optical line through machine learning based on the state information and management information of the optical line.

In the present invention, the step of outputting the fault status is characterized by providing statistical analysis and graphs in the form of a GUI and a file based on the status information and management information of the optical line stored in the database.

The present invention is characterized in that it further includes a step of storing distribution information and utility pole information in a database by the fault detection server in conjunction with NDIS (New Distribution Information System) and an integrated optical cable management system.

The optical line failure detection device and method according to one aspect of the present invention monitors disconnections and failures in the optical line for stable operation of a high-speed power communication network, quickly identifies the location of the fault, reflects on-site information, and provides fault recovery. Not only does it save time, but it also allows you to recognize signs of failure in advance.

Figure 1 is a block diagram showing an optical fiber failure detection device according to an embodiment of the present invention.
Figures 2 and 3 are example screens showing a failure status output from an optical fiber failure detection device according to an embodiment of the present invention.
Figure 4 is a graph showing the optical line loss rate measured by the optical line failure detection device according to an embodiment of the present invention.
Figure 5 is an exemplary diagram showing the results output from the optical fiber failure detection device according to an embodiment of the present invention.
Figure 6 is an exemplary diagram of determining a failure state in an optical fiber failure detection device according to an embodiment of the present invention.
Figure 7 is a flowchart for explaining a control method of an optical fiber failure detection device according to an embodiment of the present invention.

Hereinafter, an optical fault point detection device and method according to the present invention will be described with reference to the attached drawings. In this process, the thickness of lines or sizes of components shown in the drawing may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of functions in the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, definitions of these terms should be made based on the content throughout this specification.

Figure 1 is a block diagram showing an optical fiber failure detection device according to an embodiment of the present invention, and Figures 2 and 3 are example screens that output a fault status from the optical fiber fault detection device according to an embodiment of the present invention. 4 is a graph showing the optical line loss rate measured by the optical line failure detection device according to an embodiment of the present invention, and FIG. 5 is a graph showing the failure state in the optical line failure detection device according to an embodiment of the present invention. 6 is an exemplary diagram showing the results output from the optical fiber failure detection device according to an embodiment of the present invention.

As shown in FIG. 1, the optical fault detection device according to an embodiment of the present invention may include a fault point detection unit 10, a database 30, and a fault point detection server 20.

The fault detection unit 10 has a built-in OTDR (Optical Time Domain Reflector-meter) and can periodically measure the fault point and loss rate of the optical line and transmit the status information of the optical line to the fault point detection server 20.

At this time, the fault detection unit 10 accumulates the measured values of reflected light and scattered light of the optical pulse measured by the OTDR and transforms them into values of a desired form in the fault detection server 20 in order to transmit them to the fault detection server 20. and can be calculated and transmitted.

The fault detection unit 10 is connected to the fault detection server 20 based on TCP/IP, measures and transmits the loss rate and distance to the failure point measured through OTDR, and detects emergency from the fault detection server 20. If requested, the status of the optical path can be measured and transmitted.

The database 30 includes management information including status information, history, and event information of the optical cable transmitted from the fault detection unit 10, as well as integrated management of the NDIS (New Distribution Information System) 50 and the optical cable. The collected distribution information and utility pole information can be stored in conjunction with the system 60.

The fault detection server 20 determines the fault state of the optical line based on the status information and management information of the optical line received from the fault point detection unit 10 and outputs the information based on the distribution information and utility pole information stored in the database 30. The failure state can be output through the unit 40.

As shown in FIG. 2, the fault status along with detailed utility pole information 710 regarding the monitoring results of the optical line can be output through the manager's monitor through the output unit 40.

At this time, the fault detection server 20 may output the fault status in the form of an SMS text message to the manager's mobile communication terminal through the output unit 40.

In addition, the fault detection server 20 links with the NDIS (New Distribution Information System) 50 and the optical cable integrated management system 60 through the network 70 to store distribution information and utility pole information in the database 30. ), and based on this distribution information and utility pole information, the point 320, the optical line 310, and the point 330 where a failure occurred during construction can be output as shown in FIG.

Meanwhile, the fault detection server 20 can predict and output a failure according to the optical line loss rate through machine learning based on the status information and management information of the optical line.

As shown in Figure 4, the loss rate of the optical line decreases as the distance from the OTDR increases, and it can be seen that it changes when passing through the connection part of the optical line (connector pair, fusion splice, fiber bend, mechanical splice, fiber end).

At this time, the loss rate of the optical line can be calculated as shown in Equation 1.

Where, Lt: Total optical fiber loss during design.

L: Length of entire optical cable [km]

K: Optical fiber unit length loss [㏈/㎞] (applied by wavelength)

Lsd: Average fiber connection loss standard [dB]

n: Number of optical fiber core connections [number of locations]

0.5 * 2: Connection loss between single-ended optical jumper cord and optical fiber core wire

Therefore, the fault detection server 20 can predict failures by monitoring whether an event occurs based on management information based on the loss rate calculated as shown in Equation 1 and updating the failure determination criteria by machine learning.

At this time, as shown in FIG. 5, the fault detection server 20 makes a decision by reflecting various management items such as failure history information, optical loss rate, information on the section where the failure occurred, final line repair time, distance to surrounding construction sites, and packet loss rate. Failure can be predicted by creating a tree and calculating the standard loss rate for failure determination.

In addition, the fault detection server 20 not only outputs statistical analysis and graphs in GUI format as shown in FIG. 6 based on the status information and management information of the optical line stored in the database 30, but also outputs statistical analysis and graphs in an electronic format such as an Excel file. It can also be provided in the form of a data file.

As described above, according to the optical fiber failure detection device according to an embodiment of the present invention, for stable operation of a high-speed power communication network, disconnection and failure of the optical fiber are monitored to quickly identify the location of the fault and reflect on-site information to provide the information. By doing so, not only can the failure recovery time be shortened, but also signs of failure can be recognized in advance.

Figure 7 is a flowchart for explaining a control method of an optical fiber failure detection device according to an embodiment of the present invention.

As shown in FIG. 7, in the control method of the optical line failure detection device according to an embodiment of the present invention, first, the fault point detection server 20 receives information about the fault point and loss rate of the optical line from the fault point detection unit 10. Status information is received periodically (S10).

When state information on the optical line is periodically received from the fault detection unit 10 in step S10, the fault detection server 20 stores the input state information on the optical line in the database 30 (S20).

Here, the fault point detection server 20 links with the NDIS (New Distribution Information System) 50 and the optical cable integrated management system 60 through the network 70 to store distribution information and utility pole information in a database ( 30).

After storing the state information of the optical line in the database 30 in step S20, the fault detection server 20 determines the fault state of the optical line based on the input state information of the optical line and the management information stored in the database 30 ( S30).

Here, the fault detection server 20 can predict and determine failure according to the optical line loss rate through machine learning based on the status information and management information of the optical line.

In other words, the fault detection server 20 calculates the loss rate of the optical line, monitors whether an event occurs based on management information based on this, and can predict failure while updating the failure determination criteria by machine learning.

In addition, as shown in FIG. 5, the fault detection server 20 reflects various management items such as failure history information, optical loss rate, failure occurrence section information, final line repair time, distance to surrounding construction sites, and packet loss rate to determine the decision. Failure can also be predicted by creating a decision tree and calculating the standard loss rate for failure determination.

The fault detection server 20, which determines the fault state of the optical line in step S30, outputs the fault state through the output unit 40 (S40).

At this time, as shown in FIG. 2, the fault detection server 20 can output the fault status along with detailed utility pole information 710 regarding the monitoring results of the optical line through the manager's monitor through the output unit 40.

Additionally, the fault detection server 20 may output the fault status in the form of an SMS text message to the manager's mobile communication terminal through the output unit 40.

And, based on the distribution information and utility pole information stored in the database 30, the fault point detection server 20 detects the point 320 where a failure occurred during construction, the optical line 310, and the point where the failure occurred 330, as shown in FIG. ) can also be output.

Meanwhile, the fault detection server 20 not only outputs statistical analysis and graphs in GUI format as shown in FIG. 6 based on the status information and management information of the optical line stored in the database 30, but also outputs statistical analysis and graphs in an electronic format such as an Excel file. It can also be provided in the form of a data file.

As described above, according to the control method of the optical line failure detection device according to the embodiment of the present invention, for stable operation of the ultra-high-speed power communication network, disconnection and failure of the optical line are monitored to quickly identify the fault location and provide on-site information. By reflecting and providing it, not only can the failure recovery time be shortened, but also signs of failure can be recognized in advance.

Implementations described herein may be implemented, for example, as a method or process, device, software program, data stream, or signal. Although discussed only in the context of a single form of implementation (eg, only as a method), implementations of the features discussed may also be implemented in other forms (eg, devices or programs). The device may be implemented with appropriate hardware, software, firmware, etc. The method may be implemented in a device such as a processor, which generally refers to a processing device that includes a computer, microprocessor, integrated circuit, or programmable logic device. Processors also include communication devices such as computers, cell phones, portable/personal digital assistants (“PDAs”) and other devices that facilitate communication of information between end-users.

The present invention has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those skilled in the art will recognize that various modifications and other equivalent embodiments are possible therefrom. You will understand.

Therefore, the true technical protection scope of the present invention should be determined by the claims below.

10: Fault point detection unit 20: Fault point detection server
30: database 40: output unit
50: NDIS 60: Optical cable integrated management system
70: network

Claims (11)

A fault detection unit that measures the fault point and loss rate of the optical line and transmits status information;
a database storing status information, management information, distribution information, and utility pole information of the optical line transmitted from the fault point detection unit; and
Fault point detection that determines the fault state of the optical line based on the status information and management information of the optical line received from the fault point detection unit and outputs the fault state through an output unit based on distribution information and utility pole information stored in the database. including server;
The fault point detection server stores distribution information and utility pole information in the database in conjunction with NDIS (New Distribution Information System) and the optical cable integrated management system, and creates a decision tree by reflecting a number of management items. An optical line failure detection device characterized in that it predicts failure by generating and calculating a standard loss rate for failure determination.
The optical fiber fault detection device according to claim 1, wherein the fault detection unit has a built-in OTDR (Optical Time Domain Reflector-meter).
The optical line failure detection device according to claim 1, wherein the fault detection unit periodically measures the fault point and loss rate of the optical line and transmits the measurements to the fault point detection server.
delete The optical line failure detection device according to claim 1, wherein the fault point detection server provides statistical analysis and graphs in the form of a GUI and a file based on the status information and management information of the optical line stored in the database. .
delete A fault detection server receiving information on the state of an optical line from a fault detection unit;
The fault point detection server receiving status information of the optical line and storing it in a database;
Determining a failure state of the optical line based on the state information of the optical line input by the fault point detection server and management information stored in the database; and
Including the step of the fault point detection server outputting the fault state through an output unit based on the judgment result of the fault state based on distribution information and utility pole information stored in the database.
It further includes the step of the fault detection server storing distribution information and utility pole information in the database in conjunction with NDIS (New Distribution Information System) and an integrated optical cable management system,
In the step of determining the failure state of the optical line, the fault point detection server generates a decision tree by reflecting a plurality of management items, calculates a standard loss rate for failure determination, and predicts a failure. Control method of detection device.
The optical fiber failure detection device according to claim 7, wherein in the step of receiving the status information of the optical line, the fault point detection server periodically receives the fault point and loss rate of the optical line from the fault point detection unit. control method.
delete The method of claim 7, wherein the step of outputting the fault status includes the fault detection server providing statistical analysis and graphs in the form of a GUI and a file based on the status information and management information of the optical line stored in the database. Characterized by a control method of an optical line failure detection device.
delete

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