KR101806360B1

KR101806360B1 - Optical signal transceiving network terminal device for generating trouble prediction data based on environment monitoring and optical network ethernet system including the same

Info

Publication number: KR101806360B1
Application number: KR1020150108122A
Authority: KR
Inventors: 최경식
Original assignee: (주)이프라임
Priority date: 2015-07-30
Filing date: 2015-07-30
Publication date: 2018-01-11
Also published as: KR20170015696A

Abstract

There is provided an optical network Ethernet system capable of generating failure prediction data for each environmental monitoring based on an environment failure or power off in an optical signal transmitting / receiving network terminal device. Such a system includes an optical line terminal (OLT) for providing an Ethernet signal and at least two optical network terminals (ONT) connected to the optical line terminal through an optical fiber. The optical line terminal sets an optical network terminal located in a corresponding area as an object to be precisely monitored based on reception of information related to a weather or environment, collects power detection and environmental monitoring data from the optical network terminal, And a central monitoring unit for comparing and analyzing the data for each time period and controlling the troubleshooting operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical network transmission / reception network terminal apparatus for generating failure prediction data for each level of an environment monitoring based on an environment monitoring system, and an optical network Ethernet system including the same.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the field of signal transmission and reception, and more particularly to an optical network transmission / reception network terminal apparatus and an optical network Ethernet system including the same.

In order to transmit and receive Ethernet signals such as digital broadcasting and Internet / VOD (Video On Demand), an Ethernet switch is usually provided in an optical signal transmitting / receiving network terminal device constituting an optical network Ethernet system.

The optical line terminal OLT serving as a center device and the optical network terminals ONT serving as an optical signal transmitting / receiving network terminal device can be connected to each other through one optical fiber line. Depending on the connection type, the connection structure of the ring type, the Pont-to-Pont, or the tree can be made.

Generally, in order to simultaneously transmit and receive signals from one point to another, a transmission cable and a receiving cable must be separately provided. However, since the optical fiber cable itself has a wide bandwidth characteristic, a signal can be transmitted in both directions through one optical fiber line when the transmission band and the reception band are separated. However, in order to realize bidirectional optical communication with one optical fiber line, a device for separating the light emitted from the light emitting device and the light received by the light receiving device must be provided in the ONT.

In particular, in an Ethernet communication implemented by a ring network, when data is to be transmitted in both directions using one optical fiber line, an optical network terminal (ONT), which is an optical signal transmitting / receiving network terminal device, ), The optical network Ethernet system malfunctions. For example, temperature, humidity, flooding, fire, opening of a terminal box, or impact at a location where an optical network terminal (ONT) is installed may be information necessary for detecting whether or not the environment is abnormal.

An object of the present invention is to enable generation of failure prediction data for each environmental grade based on environmental monitoring at the time of an environmental fault or power-off in an optical signal transmitting / receiving network terminal device.

According to an aspect of an embodiment of the present invention, an optical signal transmission / reception network terminal device includes:

In order to transmit data bidirectionally using one optical fiber line in a communication implemented by a ring network, an optical switch unit that performs at least 2x2 optical switching function in a normal communication operation and performs bypass switching when a communication failure occurs ;

A transceiver unit for receiving an optical signal received through the optical switch unit and transmitting a transmission optical signal through the optical switch unit;

A power supply and environmental abnormality detector for receiving the level of the power supply and detecting whether or not the environmental condition of the peripheral installed in the terminal device is abnormal based on the received environmental factor data; And

The optical switch unit controls the optical switch unit, sets a fault risk level by analyzing the change of the fault condition based on the result of environment or more in the power and environment monitoring mode, and controls communication control and fault prediction Controller.

According to another aspect of the present invention, there is provided an optical network Ethernet system,

An optical line terminal (OLT) for providing an optical Ethernet signal; And

At least two optical network terminals (ONTs) connected to the optical line terminal through an optical fiber,

The optical line terminal sets an optical network terminal located in a corresponding area on the basis of reception of information related to the weather or the environment as an object of precision monitoring, collects power detection and environmental monitoring data from the optical network terminal, And a central monitoring unit for comparing and analyzing the collected data on a time basis and controlling the troubleshooting operation.

According to an embodiment, each optical network terminal comprises:

Wherein the control unit controls the optical switch unit and communicates with the central monitoring unit to receive the power detection and environmental monitoring data from the power and environmental abnormality detection unit and provides the central monitoring unit with a fault resolution in response to the control of the failure resolution operation A communication control and a failure prediction controller.

According to the embodiment of the present invention, there is an advantage that failure diagnosis and recovery can be performed quickly and accurately by generating failure prediction data for each environment grade based on environmental monitoring at the time of an environmental fault or power off in the optical signal transmitting / receiving network terminal device.

1 is a block diagram of an optical network Ethernet system according to a conceptual embodiment of the present invention.
2 is a detailed block diagram of the optical signal transmitting / receiving network terminal device of FIG.
FIG. 3 is a flow chart showing environmental monitoring control of the optical line terminal OLT in FIG. 1; FIG.
4 is a flowchart of an operation of the optical signal transmitting / receiving network terminal device interlocked with the control of FIG.
5 is a flowchart illustrating an operation of an optical signal transmitting / receiving network terminal apparatus having a self-smart environment monitoring function according to another embodiment of the present invention.
6 is an exemplary diagram showing a monitoring setting cycle table of failure prediction data for each environment monitoring based grade.
7 is an exemplary table for collecting unexpected environmental parameter data obtained from a specific optical network terminal according to an embodiment of the present invention.
8 is an exemplary table for collecting power source environmental factor data obtained from a specific optical network terminal according to an embodiment of the present invention.
9 is a graph showing the results of the monitoring analysis according to FIG.
10 is an exemplary view showing a fault status indication of the optical signal transmitting / receiving network terminal device shown through the monitor of the optical line terminal OLT of FIG.
11 is an exemplary diagram of an environmental monitoring management list according to an embodiment of the present invention.
12 is an exemplary diagram of an environmental monitoring management list according to another embodiment of the present invention.
13 is a diagram illustrating an example of setting an environmental monitoring management grade according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more apparent from the following description of preferred embodiments with reference to the attached drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art, without intention other than to provide an understanding of the present invention.

In this specification, when it is mentioned that some element or lines are connected to a target element block, it also includes a direct connection as well as a meaning indirectly connected to the target element block via some other element.

In addition, the same or similar reference numerals shown in the drawings denote the same or similar components as possible. In some drawings, the connection relationship of elements and lines is shown for an effective explanation of the technical contents, and other elements or circuit blocks may be further provided.

Each of the embodiments described and exemplified herein may also include complementary embodiments thereof, and it is to be understood that the basic operation of the optical network transmission / reception network terminal apparatus and the optical network Ethernet system including the optical network transmission / reception network terminal apparatus and the functional circuits for transmitting and receiving optical signals of the network terminal apparatus Note that the details of the present invention are not described in detail in order to avoid obscuring the gist of the present invention.

1 is a block diagram of an optical network Ethernet system according to a conceptual embodiment of the present invention.

1, an optical network Ethernet system includes an optical line terminal (OLT) 100 for providing an Ethernet signal, at least two optical network terminals (ONTs) 200- 1,200-2,200-3,200-4,200-5,200-n).

The optical line terminal 100 (OLT) functions as a center device, converts an Ethernet signal such as digital broadcasting, Internet / video on demand, etc. into an optical signal and outputs the optical signal through an East (E) 101 terminal. Meanwhile, an optical line terminal (OLT) 100 receives an upstream optical signal through the East (E: 101) terminal connected to a single optical fiber line 10.

The optical line terminal 100 (OLT) sets an optical network terminal (example 200-2) located in a corresponding area on the basis of reception of information related to the weather or the environment as an object of precision monitoring, And a central monitoring unit 110 for collecting the power detection and environmental monitoring data from the central processing unit 200-2, comparing and analyzing the collected data on a time basis, and controlling the troubleshooting operation.

In FIG. 1, the optical network Ethernet system has a ring-type network connection structure by using a single optical fiber line. That is, the optical fiber lines 10, 11, 12, 13, 14, 15, and 16 may form a ring structure with respect to the optical line terminal 100 (OLT).

For convenience, the direction of transmission from East to West indicates the forward direction, and the direction from West to East indicates the reverse direction. However, this is given only for convenience of explanation in FIG. 1, and in the case where the matters are different, the directions opposite to each other may be called forward and backward directions.

Therefore, for example, when the optical fiber line 10 is cut or damaged in the ring network structure of FIG. 1 or the power of the first optical signal transmitting / receiving network terminal device 200-1 which is the optical network terminal (ONT) is turned off The optical communication of the optical network Ethernet system may be difficult to perform in both the upward and downward directions. However, when the optical switch unit performing the bypass function is installed in the first optical signal transmitting / receiving network terminal 200-1 as shown in FIG. 2, the optical network transmission / Can be maintained.

As a result, each optical network terminal may include an optical switch unit performing at least a 2x2 optical switching function in the normal operation for performing optical communication and performing bypass switching in response to the switching control signal.

1, power off occurs in the optical network terminal (ONT # 1: 200-1), but power off occurs in other optical network terminals such as the optical network terminal (ONT # 3: 200-3) It might be. Therefore, when power off occurs in the optical network terminal (ONT # 3: 200-3), bypass switching occurs only in the optical network terminal (ONT # 3: 200-3) 200-1 or other optical network terminals, the normal switching operation is performed without the bypass switching operation.

On the other hand, when the optical fiber line 10 is cut or damaged, the optical network terminal (ONT # 1: 200-1) outputs the upstream optical signal (W) output from the West (W) 103 terminal of the optical line terminal 15, 114, 13, 12, and 11 through the optical fiber lines 16, 15, 114, 13,

The optical line terminal (OLT) 100 may be connected to the weather and environment supply server 400 through a communication network 200 such as the Internet to generate failure prediction data. For example, when the optical line terminal (OLT) 100 receives the concentrated rain forecasting area from the weather and environment supply server 400, the optical line terminals (200-1, 200-2, 200-3, 4,200-5,200-n), it is possible to search the optical network terminal installed in the concentrated rain forecast area and set it as a target of precision monitoring.

Here, the power detection and environmental monitoring data collection is relatively frequent with respect to the optical network terminals set as the object of precision monitoring, as compared with the general optical network terminals that are not set as the object of precision monitoring.

2 is a detailed block diagram of the optical signal transmitting / receiving network terminal device of FIG.

2, the optical network terminal includes an optical switch unit 210, a transceiver unit including first and second transceivers 220 and 230, a power and environmental abnormality detector 240, an environmental factor data collector 260, And a communication control and failure prediction controller 250. [

The optical switch unit 210 performs at least a 2x2 optical switching function in the normal communication operation in order to transmit data in both directions using one optical fiber line in communication implemented in a ring network, Path switching is performed.

The optical switch unit 210 performs at least a 2x2 optical switching function in the normal operation and performs bypass switching in response to the switching control signal. Specifically, the optical switch unit 210 includes a first switch SW1, a second optical input / output terminal P4, and a second switch SW2 for switching between the first optical input / output terminal P1 and the first internal connection port P3. Output port P1 and the second optical input / output port P1 in order to perform the bypass switching in response to the switching control signal, and a second switch SW1 for switching between the first optical input / output port P1 and the second optical input / And a third switch SW3 for switching between the terminals P4.

Since only one optical switch unit 210 is provided in the optical signal transmission / reception network terminal device (for example, 200-1), the device is made compact and the implementation price is reduced.

The first optical input / output terminal P1 may indicate the West terminal, and the second optical input / output terminal P4 may indicate the East terminal.

The first optical input / output terminal P1 (W) may be connected to a single-core optical fiber 10 for bidirectional communication and the second optical input / output terminal P4 (E) may be connected to a single- Can be connected.

The wavelength used for the bidirectional communication may be, for example, 1310 nanometers and 1550 nanometers. Accordingly, when the first transceiver 220 receives the optical signal having the wavelength of 1550 nanometers in the first direction, it transmits the optical signal having the wavelength of 1550 nanometers in the second direction opposite to the first direction . Meanwhile, when the first transceiver 230 transmits the optical signal having the wavelength of 1550 nanometers in the first direction, the optical signal having the wavelength of 1550 nanometers can be received in the second direction.

Although the optical switch unit 210 is a 2x2 Ethernet optical switch for switching a broadcast signal and an Ethernet signal, the optical switch unit 210 is merely an example and may be an optical switch for switching other signals.

The transceiver unit receives an optical signal received through the optical switch unit 210 and transmits a transmission optical signal through the optical switch unit 210. The first transceiver 220 is connected between the second internal connection port P2 and the controller 250 to convert an upstream optical signal received through the optical switch unit 210 into an electrical signal, And converts the transmission signal to be transmitted into the transmission optical signal. The second transceiver 230 is connected between the first internal connection port P3 and the controller 250 to convert a downstream optical signal received through the optical switch 210 into an electrical signal, And converts the transmission signal to be transmitted into the transmission optical signal.

An optical path is formed through the line L20 in response to the switching of the first switch SW1 in the optical switch unit 210 so that the optical signal transmitted through the optical fiber line 10 is transmitted to the second transceiver 230 / RTI > Therefore, when the wavelength of the optical signal transmitted in the first direction (for example, downward) of the line L20 is 1310 nanometers, for example, the second direction (for example, upward) of the line L20, Lt; RTI ID = 0.0 > 1550 < / RTI > nanometers.

In response to the switching of the second switch SW2, a light path through the line L10 is formed and an optical signal transmitted through the optical fiber line 11 is provided to the first transceiver 220. [ Therefore, when the wavelength of the optical signal transmitted in the first direction (e.g., downward) of the line L10 is 1550 nanometers, for example, the second direction of the line L10 (for example, upward) For example, 1310 nanometers.

Under the control of the communication control and failure prediction controller 250, in the bypass switching mode, the third switch SW3 of the optical switch unit 210 connects between the ports P1 and P4. Thus, in the first direction, the optical signal received at the West is directly transmitted to the East without passing through the transceiver in the optical signal transmitting / receiving network terminal apparatus (for example, 200-1) . In the second direction, the optical signal received at the east is directly transmitted to the West without passing through the transceiver in the optical signal transmitting / receiving network terminal device (e.g., 200-1).

The power and environment abnormality detector 240 receives the level of the power supply and detects whether or not the environment of the peripheral installed in the terminal is abnormal based on the received environmental factor data.

The communication control and failure prediction controller 250 controls the optical switch unit 210 and communicates with the central monitoring unit to receive the power detection and environmental monitoring data from the power and environmental detection unit 240, To the monitoring unit 110, and performs the failure resolution in response to the control of the failure resolution operation.

The environmental factor data collection unit 260 collects environmental factor data through a plurality of sensors S1-Sn. Here, the environmental factor data may include temperature, humidity, impact, fire, flooding, door opening of an equipment enclosure, or use of an emergency power source.

The environmental factor data collection unit 260 converts analog data output from each of the sensors into digital data and reads a sensing reference value for each of the sensors, which is variable in a memory such as a flash memory Function.

The central monitoring unit 110 of the OLT 100 sets a fault hazard level according to a change in the fault condition based on a result of comparing and analyzing the collected data on a time basis and generates fault prediction data according to the fault fault grade And the like.

2, a power detection error signal PDE may be provided to the power supply and environmental malfunction detection unit 240 when the power supply level of the constant power supply 270 is detected as an abnormal state by the power supply level detector 290. [ Accordingly, the communication control and failure prediction controller 250 can apply the power switching signal PSS to the power switch 295 via the line L60. The optical signal transmitting / receiving network terminal device can be driven by receiving the emergency power source 280 by performing the power switching function of the power switch 295.

When the optical signal transmitting / receiving network terminal device of FIG. 2 has a smarter function, the control flow shown in FIG. 5 can be performed.

Meanwhile, when the optical signal transmitting / receiving network terminal device has only a data collecting and transmitting function as a slave device of the central monitoring section, the control flow shown in FIG. 4 can be performed.

For convenience of explanation, the operation of the environment monitoring control corresponding to Figs. 3 and 4 will be referred to as an operation of the first embodiment, and the smart control operation corresponding to Fig. 5 will be referred to as an operation of the second embodiment. Hereinafter, .

FIG. 3 is a flow chart showing environmental monitoring control of the optical line terminal OLT in FIG. 1; FIG. 4 is a flowchart of an operation of the optical signal transmitting / receiving network terminal device interlocked with the control shown in Fig.

Various wired and wireless telecommunication companies such as internet communication network operators, mobile communication companies, and cable TV companies operate a number of domestic and unmanned base stations including regional countries, and a lot of equipment such as rectifiers, batteries, switch devices, optical repeaters, Respectively. Especially, the enclosure installed outdoors is installed in a harsh environment from the remote mountain to the pole. Therefore, it may be necessary to remotely monitor the environment of the enclosure (eg, ONT, etc.) such as input power, rectifier output, internal temperature, The first embodiment will be more suitably applied where such centralized control is required.

Referring to FIG. 3, in step S310, the OLT 100 that has been performing the optical communication control can check in step S320 whether a cycle of the environment monitoring event has arrived. The period of the environmental monitoring event can be variably set in units of seconds, minutes, or hours. For example, if a heavy rainstorm alarm is issued in a specific area in the rainy season, the ONT installed in the specific area can be set as a precise monitoring target, so that the period of the environmental monitoring event is relatively short. As a result, the ONT set as the object of precision monitoring needs to be monitored relatively frequently.

The central monitoring unit 110 in the OLT 100 can have the control of environmental monitoring when the period of the environmental monitoring event comes. That is, when a plurality of processors are installed in the OLT 100, in order to increase the monitoring efficiency in the environmental monitoring mode, a dedicated processor performs an environmental monitoring control operation accordingly.

In step S330, the central monitoring unit 110 may receive weather and environment data for each region from the weather and environment supply server 400 connected through the communication network 300. [

When the central monitoring unit 110 receives the concentrated rain forecasting area from the weather and environment supply server 400, the optical network terminal (ONTs) 200-1, 200-2, 200-3, 200-4, -n) can be searched for the optical network terminal installed in the expected heavy rainfall area and can be set as an object of precision monitoring.

In step S350, the central monitoring unit 110 may collect power detection and environmental monitoring data from an OLT or an unconfigured OLT that is set as a precise monitoring target.

Here, the frequency of data collection may be relatively high for an OLT set as a precision monitoring target for improving the accuracy of the failure prediction.

In step S360, the central monitoring unit 110 compares and analyzes collected data received for each set time period.

Step S370 is a step of controlling the fault remedying operation. The fault remedying operation includes a command for power-off, an operation command for a fire extinguisher containing halon gas, a recovery call transmission to a setting destination or a service engineer, Lt; / RTI > In addition, predictive analysis, which predictively analyzes the cause of the disorder occurring in the event of an unexpected situation or a sudden disorder, can help solve the problem quickly. This is because at least one selected from the necessary equipment or tools for resolving the fault, the necessary information for resolving the fault, the manpower required for resolving the fault, and any combination thereof beforehand can be provided in advance, before instructing the resolution of the fault.

In step S380, it is checked whether or not data indicating that the failure recovery is completed is received from the corresponding OLT.

Since the OLT 100 of FIG. 1 has the centralized environment monitoring schema as shown in FIG. 3, the ONT of FIG. 2 can perform the control flow as shown in FIG. 4 in a dependent manner.

Referring to FIG. 4, the ONT receives the optical communication data in step S410, and checks whether it is selected as an object of precision monitoring in step S420. This enables the ONT to recognize whether or not the ONT has been selected as an object of precision monitoring by receiving specific flag data from the ONT.

In step S430, power detection and environmental monitoring data are transmitted to the OLT 100. [

If the failure prediction data is received in step S440 and it is confirmed that the failure recovery time has arrived in step S450, a power supply change operation, a fire extinguisher operation operation, and a door close operation may be performed by remote control in step S460.

When the failure recovery is completed, the 0NT may save the recovery completion information to save the history in step S470 and transmit the recovery completion information to the OLT.

5 is a flowchart illustrating an operation of an optical signal transmitting / receiving network terminal apparatus having a self-smart environment monitoring function according to another embodiment of the present invention.

FIG. 5 shows the operation control flow of the second embodiment in which FIG. 2 has a self-smart function and is performed under a more relaxed control environment in the centralized environment monitoring of the OLT 100. FIG. That is, the second embodiment analyzes the failure state change itself and generates the failure prediction data for each failure risk level.

Referring to FIG. 5, 0NT performs optical communication control in step S510, and checks whether a power and environment monitoring period has arrived in step S520.

Such a check operation can be implemented by a function setting through a timer circuit or by a watchdog program.

When the power supply and environment monitoring cycle comes, the 0NT reads power supply detection and environmental factor data in step S530. Specifically, the communication control and failure prediction controller 250 acquires the power detection and environmental factor data from the power and environmental abnormality detector 240. On the other hand, the power and environmental abnormality detector 240 receives the power detection and environmental factor data from the environmental factor data collection unit 260 connected to the line L50 and detects whether there is an abnormality.

0NT checks whether an unexpected failure or latent failure event has occurred in step S540, and performs the control according to the unexpected failure in step S550.

For example, in step S550, in the case of a power supply failure or inundation occurrence, it may be an unexpected failure, so that it is possible to transmit the status information indicating the replacement after replacement with the emergency power supply. The operation of the device can be stabilized by the replacement of the emergency power source.

On the other hand, in the case of latent faults such as temperature and humidity information rising in step S550, the monitoring level is increased and the precision monitoring mode is entered. In the case of entering the precision monitoring mode, the polling cycle of power detection and environmental monitoring data is shortened. That is, the frequency of data collection is relatively high in order to improve the accuracy of the failure prediction.

In step S560, the failure state change is analyzed for each precision monitoring period, and the failure prediction data is generated and transmitted according to the failure risk grade.

In step S570, it is checked whether the failure recovery is completed.

6 is an exemplary diagram showing a monitoring setting cycle table of failure prediction data for each environment monitoring based grade.

Referring to FIG. 6, the monitoring setting cycle table may be operated differently according to the prediction class.

For example, information on temperature, humidity, shock, fire, flooding, door openness, power failure, and human body detection can be collected in 1 to 30 seconds increments in the third stage where the failure prediction class is relatively high. On the other hand, information on temperature, humidity, shock, fire, flooding, door open, power failure, and human body detection can be collected in the first stage where the failure prediction level is relatively low.

In this way, monitoring configuration of fault prediction data by class based on environmental monitoring improves the accuracy of data generation while reducing the hardware and software burden.

7 is an exemplary table for collecting unexpected environmental parameter data obtained from a specific optical network terminal according to an embodiment of the present invention.

Referring to Fig. 7, there is shown an example of the collection of unexpected environmental factor data for the ONT installed in the bridge. The collection period is one minute. When the shock is detected at 12:15 and door opening is detected, the temperature drops sharply at 12:18 min, the humidity rises, and the flood is eventually detected.

Even in the case of FIG. 7, a prediction analysis that predictively analyzes the cause of the fault occurring when the fault occurs due to flooding may help solve the fault quickly. Because at least one selected from the necessary equipment or tools for troubleshooting, the necessary information for troubleshooting, the necessary personnel for troubleshooting, and any combination thereof before instructing the troubleshooting can be provided in advance according to the embodiment Because.

This phenomenon of Fig. 7 is analyzed through Fig. 9 is a graph showing the results of the monitoring analysis according to FIG.

In Fig. 9, the horizontal axis indicates time and the vertical axis indicates the size of data. Referring to FIG. 9, graph GP 30 is a graph showing the results of impact detection, graph GP 20 is a graph showing the results of temperature sensing, and graph GP 10 is a graph showing the results of humidity sensing. Since the impact was detected at 12:15 min, the level of graph GP 30 is relatively high at 12:15 min. As the temperature drops sharply at 12:18 min, the level of graph GP 20 is lowered and the humidity is rising, so that the level of graph GP 10 is increased.

8 is an exemplary table for collecting power-related environmental factor data obtained from a specific optical network terminal according to an embodiment of the present invention.

Referring to FIG. 8, an example of collection of power environment parameter data for an ONT installed in a strong region is shown. The collection period is one minute, and an emergency power source is supplied to the enclosure by generating a failure of the constant power source at 12:15 minutes.

10 is an exemplary view showing a fault status indication of the optical signal transmitting / receiving network terminal device shown through the monitor of the optical line terminal OLT of FIG.

An example in which an alarm is visually displayed at the point AL on the monitor screen of Fig. 10 is shown. The monitor screen may be implemented as a liquid crystal screen or an OLED screen, and ONTs disposed at respective points based on GIS may be displayed.

11 is an exemplary diagram of an environmental monitoring management list according to an embodiment of the present invention.

Referring to the drawings, humidity collection data for ONTs installed in Kangdong, Jiangxi, and Jiangxi provinces from April 1, 2015 to April 30, 2015 are shown. Especially, in case of 15 ONT in Kangseo E area, humidity was collected 17 times higher than other devices. Referring to the detailed humidity data according to the table on the right side of the drawing, it can be seen that all of them are maintained at a constant level of 50% or more.

Therefore, the ONT No. 15 in Jiangxi E region is operated under a high humidity environment, so it is necessary to perform precise monitoring, and it is necessary to set the replacement cycle to be shorter than that in the normal case.

12 is an exemplary diagram of an environmental monitoring management list according to another embodiment of the present invention.

Referring to the drawings, humidity collection data for ONTs installed in Kangdong, Jiangxi, and Jiangxi provinces from April 1, 2015 to April 30, 2015 are shown. In particular, in the case of the 5th ONT in the area of the Gangdong D area, it is confirmed that the data collected at a humidity of 50% or more is six times. Referring to the detailed humidity data therefrom from the table on the right side of the drawing, it can be seen that the collected humidity data fluctuates irregularly. Therefore, in this case, since the correlation between the six data is very rare, it can be interpreted as a noise phenomenon on the sensing and collecting paths. The data collected at random with a large deviation can be detected through the variance / standard deviation of the entire data.

Therefore, the 5th ONT in the D region is not classified as an object to be closely monitored, but it can be classified as a need to check the data collection path.

13 is a diagram illustrating an example of setting an environmental monitoring management grade according to an embodiment of the present invention.

Referring to FIG. 13, an example of the management level and management method according to the number of times is shown.

By providing a management plan for each frequency of occurrence of environmental monitoring data, management efficiency can be improved and utilization as preventive data for trouble handling can be possible.

The application of the present invention is not limited to the FTTH (Fiber To The Home) method. In addition, although a communication method using a single optical cable has been described, taking advantage of the fact that the bandwidth of the optical cable is sufficiently large considering that the voice telephone service, the internet service, and the cable broadcasting service are provided to the respective homes through different lines, The above three services may be provided as a pair of optical cables. That is, since a plurality of signals can be simultaneously transmitted to one optical cable, bidirectional voice data transmission / reception, internet data transmission / reception, and cable broadcasting reception are all possible with a pair of optical cables.

As described above, an optimal embodiment has been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. For example, when the matter is different, changes and modifications can be made to the detailed configuration of the optical switch or the internal connection configuration of the terminal device without deviating from the technical idea of the present invention.

100: Optical line terminal
200-1: Optical Network Terminal
210: Optical switch section
220: first transceiver
230: second transceiver
250: Communication Control and Fault Prediction Controller

Claims

In order to transmit data bidirectionally using one optical fiber line in a communication implemented by a ring network, an optical switch unit that performs at least 2x2 optical switching function in a normal communication operation and performs bypass switching when a communication failure occurs ;
A transceiver unit for receiving an optical signal received through the optical switch unit and transmitting a transmission optical signal through the optical switch unit;
A power and environmental abnormality detector for receiving the level of the power supply and detecting whether or not the environmental condition of the peripheral installed in the terminal is abnormal based on the received environmental factor data; And
And controls the optical switch unit to set a fault severity level by analyzing a failure state change of the terminal device in a power source and environment monitoring mode and generates failure prediction data according to the fault severity rating and transmits the generated failure prediction data to the optical line terminal A communication terminal apparatus comprising: a communication control unit;

The apparatus of claim 1, further comprising an environmental factor data collection unit for collecting environment factor data through a plurality of sensors to provide the environmental factor data.

The terminal of claim 1, further comprising a power level detector for detecting the level of the power supply to supply emergency power when an emergency occurs.

The terminal of claim 1, wherein the environmental factor data includes at least one of temperature, humidity, shock, fire, immersion, door openness, and human body detection.

2. The optical signal transmission / reception network terminal of claim 1, wherein the higher the failure hazard level is, the shorter the operation period for detecting whether or not the environment is abnormal.

2. The terminal of claim 1, wherein the communication control and fault prediction controller receives fault prediction data through the optical fiber line separately from the fault prediction data.

The communication control and fault prediction controller according to claim 1, wherein the communication control and failure prediction controller controls the optical switch unit when a failure related to an optical signal transmission / reception of the transceiver unit is generated, so that an optical signal received in the first direction is directly transmitted And an optical signal received in a second direction opposite to the first direction is directly transmitted without passing through the transceiver unit.

The apparatus of claim 1, wherein the communication control and failure prediction controller transmits the failure prediction data more frequently as the failure hazard level becomes higher.

An optical line terminal (OLT) for providing an Ethernet signal; And
At least two optical network terminals (ONTs) connected to the optical line terminal through an optical fiber,
The optical line terminal sets an optical network terminal located in a corresponding area to be a precise monitoring object based on the reception contents of information related to the weather or the environment and then collects power detection and environmental monitoring data from the optical network terminal And a central monitoring unit for comparing and analyzing the collected data on a time basis to control the troubleshooting operation,
One optical network terminal of the optical network terminals,
In order to transmit data bidirectionally using one optical fiber line in a communication implemented by a ring network, an optical switch unit that performs at least 2x2 optical switching function in a normal communication operation and performs bypass switching when a communication failure occurs ;
A transceiver unit for receiving an optical signal received through the optical switch unit and transmitting a transmission optical signal through the optical switch unit;
A power and environmental abnormality detector for receiving the level of the power supply and detecting whether or not the environmental condition of the peripheral installed in the terminal is abnormal based on the received environmental factor data; And
Wherein the control unit controls the optical switch unit and communicates with the central monitoring unit to receive the power detection and environmental monitoring data from the power and environmental abnormality detection unit and provides the central monitoring unit with a fault resolution in response to the control of the failure resolution operation The optical network Ethernet system comprising a communication control and a failure prediction controller.

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10. The optical network Ethernet system of claim 9, wherein the environmental factor data comprises at least one of temperature, humidity, shock, fire, immersion, door openness, and human body detection.

10. The optical networked Ethernet system of claim 9, wherein the control of the fault resolution operation includes at least one of a power switch, a fire extinguisher operation, a recovery call transmission, and a failure prediction data transmission.

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