KR101048274B1 - HFC transmission network connection state detection device and method - Google Patents

Abstract

An HFC transmission network connection state detection apparatus is disclosed. This detection device is a device for detecting a connection state of a cable connector interconnecting a communication device including an optical transceiver, an trunk branch amplifier, and a branch connector on an HFC transmission network connection state detection device. A leakage propagation detection member connected to one side and detecting a radio wave leakage signal generated at a connector between each communication device; Is electrically connected to the leak propagation detecting member to receive a radio wave leakage signal detected by the leak propagation detecting member, and compares the intensity of the received radio wave leakage signal with one or more preset threshold levels, A propagation leakage state detector for displaying in stages to correspond to the threshold level accordingly; And a power supply unit for supplying power to the radio wave leakage state detection unit. According to this, after detecting the leakage of the radio wave due to the poor connection of the cable connector connecting the communication devices with the radio wave leakage direction detection antenna, the strength of the radio wave leaked from the corresponding connector is detected and displayed on the leakage state display unit. The connection defect can be immediately recognized without disconnecting the connector, and thus the network is easily maintained, the cost of the network is reduced, and the quality of the network is improved by eliminating the cause of noise.

Communication equipment, connectors, leak propagation, detection

Description

HFC transmission network connection state detection device and method thereof {A DEVICE FOR CONNECTION ERROR DETECTION OF HYBRID FIBER COAXIAL TRANSFER NETWORK AND THEREOF METHOD}

The present invention relates to an HFC transmission network connection detection device and a method thereof, and more particularly, to a communication device including an optical transceiver (ONU), a trunk branch amplifier (TBA), and a branch connector (TAP-OFF) on a hybrid fiber coaxial (HFC) transmission network. When the radio wave in the transmission network is leaked or radiated due to fine loosening of the cable connector or interconnection of the cable, the leakage wave is detected and the strength of the leaked radio wave is displayed and a warning sound is generated. The present invention relates to an HFC transmission network connection state detection apparatus and method for determining an abnormality quickly and easily.

In recent years, in the broadband integrated network (BcN) environment in which wired / wireless convergence, broadcasting and communication are converged, the subscriber network type of the high-speed infrastructure for providing high-speed Internet service and digital broadcasting service is copper line-based ASL (Asymmetric Digital Subscriber Line) / VDSL. (Very high-data Digital Subscriber Line), hybrid fiber-coaxial (HFC), and fiber-based Fiber To The Home (FTTH).

Here, the HFC (Hybrid Fiber Coaxial) transmission network is an optical-coaxial mixed network in which a fiber cable and a coaxial cable are mixed, and each other in the network for transporting broadband content such as video, data, and voice. In other parts, it is a communication technology that uses a combination of optical fiber cables and coaxial cables.

The HFC transmission network has overcome the limitations of transmission speed and bandwidth by combining the advantages of optical cable and coaxial cable, and has been widely used in recent years because it has the advantages of excellent bidirectional characteristics and low maintenance cost and facility cost.

The current cable TV transmission network is being replaced by HFC network, which divides one wire broadcasting area into several unit cells and uses fiber optic cable from the broadcasting station to the corresponding unit cell and coaxial cable from the unit cell to the subscriber. It takes a form to say.

Signals used in the HFC transmission network can be divided into up and down, which is a signal rising from the subscriber to the headend center, generally using a frequency band of 5 ~ 42MHz or 5 ~ 88MHz.

However, in a system that operates an existing RF communication network, an optical communication network, or a LAN communication network, there is a lack of technology for managing an HFC network in a trend that HFC transmission networks are widely used.

In particular, the connection status of cable connectors interconnecting telecommunication equipment including optical transceivers (ONU), trunk branch amplifiers (TBA), and branch connectors (TAP-OFF) on a hybrid fiber coaxial (HFC) transmission network is changed. Undesired radio waves or noise are introduced into the uplink communication band due to fine loosening or the obsolescence of the communication equipment enclosure.

In this way, the connection state of the connector seems to be normally connected to the naked eye, but in reality, it is difficult to find the cause because of poor connection and leakage or inflow of the radio wave due to the above-mentioned reasons. There was a problem.

The present invention has been made to solve the above problems of the prior art, the technical problem of the present invention is the connection of a cable connector for interconnecting a communication device including an optical transceiver, trunk branch amplifier, branch connector, etc. on the HFC transmission network The present invention provides a means for preventing the occurrence of noise due to a poor connection state of the connector by detecting and maintaining the condition quickly and easily.

In order to solve the above technical problem, the present invention,

An apparatus for detecting a connection state of a cable connector interconnecting a communication device including an optical transceiver (ONU), a trunk branch amplifier (TBA), and a branch connector (TAP-OFF) on a hybrid fiber coaxial (HFC) transmission network.

A leakage propagation detecting member connected to one side of the main body and detecting a radio wave leakage signal generated from a connector between each communication device;

Is electrically connected to the leak propagation detecting member to receive a radio wave leakage signal detected by the leak propagation detecting member, and compares the intensity of the received radio wave leakage signal with one or more preset threshold levels, A propagation leakage state detector for displaying in stages to correspond to the threshold level accordingly; And

Provided is an HFC transmission network connection state detection device comprising a power supply for supplying power to the radio wave leakage state detection unit.

The leak wave detection member,

A radio wave leakage direction detecting antenna for detecting a direction in which radio waves leak in an area in which communication devices are installed; And

When the communication device located in the direction of leakage of the radio wave through the radio wave leakage detection antenna is detected, it comprises a connector measuring antenna for contacting the connector of the detection target communication device to detect the radio wave leaked from the connector do.

The radio wave leakage state detection unit,

A leakage signal amplifying unit electrically connected to the leak propagation detecting member to receive a signal detected by the leak propagation detecting member, extract only a predetermined signal, and amplify and output the extracted signal;

A detector for demodulating the signal input from the leakage signal amplifying unit to restore a voice signal, and smoothing the restored voice signal to convert the voltage signal into a voltage level; And

And a leakage state display unit for comparing the intensity of the voice signal converted into the voltage level with one or more preset threshold levels and outputting stepwise to correspond to the threshold levels through an alarm means provided according to the comparison result. It features.

The alarm means,

A display unit configured to differentially light one or more light emitting diodes according to the threshold level; And

And an output sound generator for generating output sounds having a size divided according to the threshold level.

The power supply unit is characterized by consisting of a jack for connecting a battery or an external power source.

On the other hand, the present invention,

A method for detecting a connection state of a cable connector interconnecting a communication device including an optical transceiver (ONU), a trunk branch amplifier (TBA), and a branch connector (TAP-OFF) on a hybrid fiber coaxial (HFC) transmission network.

A leak propagation detecting step of detecting a radio wave leakage signal generated at a connector between each communication device; And

Receives a radio wave leakage signal detected in the leak propagation detection step, and compares the intensity of the received radio wave leakage signal with one or more preset threshold levels, and displays the phase level corresponding to the threshold level according to the intensity of the radio wave leakage signal. It provides a HFC transmission network connection state detection method comprising a radio wave leakage state detection step.

The leak wave detection step,

A radio wave leakage direction detecting step of detecting a direction in which radio waves leak in an area in which the respective communication devices are installed; And

When the communication device located in the direction of the radio wave leakage in the radio wave leakage direction detection step is detected, characterized in that it comprises a connector radio wave leakage measuring step of detecting a radio wave leaking from the connector in contact with the connector of the detection target communication device .

The radio wave leakage state detection step,

A leakage signal amplifying step of receiving a radio wave leakage signal detected in the leak propagation detecting step, extracting only a predetermined signal, and amplifying and outputting the extracted signal;

A detection step of demodulating the signal input in the leakage signal amplifying step to restore a voice signal, converting the restored voice signal to a smoothed voltage level, and outputting the converted voltage signal; And

And a leakage state display step of comparing the intensity of the voice signal converted into a voltage level in the detection step with one or more preset threshold levels and outputting stepwise to correspond to the threshold level according to the comparison result. do.

The leak state display step,

A display step of displaying one or more light emitting diodes differently lit according to the threshold level; And

And an output sound generation step of generating output sounds having a size divided according to the threshold level.

According to the HFC transmission network connection state detection apparatus and the method according to the present invention, due to the fine loosening of the cable connector interconnecting the optical transceiver, the trunk branch amplifier, the communication device including the branch connector, etc. on the HFC transmission network or the age of the enclosure in the transmission network When the radio wave is leaked or radiated, it is possible to quickly and easily determine whether there is an abnormality in the connector or communication device by detecting the connector that the radio wave is leaked to display the strength of the leaked radio wave and to generate a warning sound.

As described above, the connection network of the connector showing the normal fastening state can be easily and quickly detected by the naked eye, thereby making it easy to maintain the transmission network.

In addition, it is possible to easily find only the connector with poor connection status, so that only the troublesome part is maintained, thus reducing the additional investment cost for the maintenance of the transmission network, and blocking the noise noise factor in the HFC transmission network. This can improve the quality of the service, thereby realizing a high quality Internet service.

When described in detail with reference to the accompanying drawings a preferred embodiment of the present invention having the above characteristics as follows.

In the accompanying drawings, FIG. 1 is a schematic diagram illustrating an apparatus for detecting HFC transmission network connection state according to an exemplary embodiment of the present invention, and FIG. 2 is a schematic block diagram for explaining the configuration of the apparatus for detecting HFC transmission network connection state shown in FIG. 3A and 3B are schematic block diagrams showing a state of use of the HFC transmission network connection state detection device shown in FIG. 1, and FIG. 4 is an HFC transmission network connection state using the HFC transmission network connection state detection device shown in FIG. This is a block diagram to explain how to detect.

As shown in FIG. 1 to FIG. 3, the apparatus for detecting HFC transmission network connection state according to the present invention includes an ONU-Optical Node Unit, an TBA-Trunk Bridging Amplifier, and the like, on a hybrid fiber coaxial (HFC) transmission network. An apparatus for detecting a connection state of a cable connector 110 that interconnects a communication device 100 including a branch connector (TAP-OFF), that is, a connection failure of the connector 110. Detailed description of various communication devices such as the optical transceiver, the trunk branch amplifier, the branch connector, etc. will be omitted.

First, the main body 10 of the HFC transmission network connection state detection device is made of a steel body or synthetic resin material, the power supply unit 40 and the radio wave leakage state detection unit 30 is provided therein, the one side is the direction of the radio wave leakage The leakage propagation detecting member 20 for searching and finding a connector from which radio waves are leaked is selectively connected and connected by a separate F-type connector. In addition, the front surface of the main body 10 is provided with a plurality of light emitting diodes for indicating the leakage of the radio wave and its strength, and has a structure attached to the ATT switch and the level variable terminal.

This will be described in more detail as follows.

The leakage propagation detecting member 20 is connected to one side of the main body 10 to detect a radio wave leakage signal generated from the connector 110 between the communication devices 100, and the respective communication devices 100 are installed. After detecting the direction in which the radio wave leaks through the radio wave leakage direction detecting antenna 22 and the radio wave leakage direction detecting antenna 22 configured to detect the direction of radio wave leakage in the area, And a connector measuring antenna 24 configured to detect a radio wave leaking from the connector 110 in contact with the connector 110 of the located communication device 100. In this case, although the radio wave leakage direction detecting antenna 22 and the connector measuring antenna 24 may be connected to the main body 10 at the same time, the radio wave leakage direction detecting antenna 22 may be used. After detecting the direction in which the radio wave is leaked by connecting to the F-type connector will be described on the basis of replacing the radio leakage direction detection antenna 22 with the connector measuring antenna 24.

On the other hand, the radio wave leakage state detection unit 30 is electrically connected to the leak wave detection member 20 is configured to receive a radio wave leakage signal detected by the leak wave detection member 20, and based on the strength of the received radio wave leakage signal And to display stepwise to correspond to the threshold level according to the strength of the propagation leakage signal in comparison with the set one or more threshold levels.

The radio wave leakage state detecting unit 30 is electrically connected to the leak wave detecting member 20 to receive a signal detected by the connector measuring antenna 24 of the leak wave detecting member 20 to extract only a predetermined signal, It includes a leakage signal amplifying unit 32 for repeating the process of amplifying the extracted signal while gradually amplifying the extracted signal to output. And a detector 34 for demodulating the signal input from the leakage signal amplifying unit 32 to restore the voice signal, and smoothing the restored voice signal to convert the voltage signal into a voltage level. It includes a leakage state display unit 36 for comparing the intensity of the voice signal with one or more preset threshold level, and outputs step by step to correspond to the threshold level through the alarm means 37 provided according to the comparison result.

At this time, the alarm means 37 provided in the leakage state display unit 36 includes a display unit 37A for differentially lighting one or more light emitting diodes provided according to a threshold level, and an output sound having a magnitude distinguished according to the threshold level. It consists of an output sound generating part 37B. The light emitting diodes are installed in a line in front of the main body 10 and light up in association with the intensity of radio waves leaking. The output sound generator 37B may be configured as a speaker provided in the main body 10, and may be configured as headphones connected to an output amplifier although not shown in the drawing. When configured with headphones, you will be able to detect fine output sounds.

On the other hand, the power supply unit 40 is for supplying power to the radio wave leakage state detection unit 30, may be made of a 12V battery housed in the main body 10, the jack provided on one side of the main body 10 Power can be supplied from outside. The portability is good when it is made of a dry battery. Such a battery may be made of a battery capable of recharging, and may be configured to charge a battery in a state accommodated in the main body 10 by connecting a jack of a charging adapter.

1 to FIG. 1 through FIG. 1 through the process of detecting the radio wave leaking from the cable connector 110 connecting each communication device 100 by using the HFC transmission network connection state detection device according to the preferred embodiment configured as described above The more detailed description based on 4 is as follows.

First, the leakage direction detection antenna 22 of the leakage propagation detecting member 20 is coupled to the main body 10 to detect a radio wave leakage signal generated at the connector 110 between the communication devices 100. Leak wave detection step (S1). In this case, the leakage direction detecting antenna 22 is used to detect a direction in which radio waves leak in an area in which each communication device 100 is installed. This step is a radio wave leak direction detection step (S1-1). For example, if the communication device 100 is installed in an area, the operator detects whether the radio wave is leaked from the communication device 100 located in the area by using the leakage direction detecting antenna 22.

In this process, when the communication device 100 in which radio waves are leaked is detected in the radio wave leakage direction detecting step (S1-1), the leakage direction detecting antenna 22 is replaced with a connector measuring antenna 24. Then, the connector measuring antenna 24 is in contact with the connector 110 of the detection target communication device 100 to detect radio waves leaking from the connector 110. This step is a connector radio wave leakage measuring step (S1-2).

When the leaking radio wave is detected in this process, the leakage signal of the radio wave is received by the radio wave leakage state detection unit 30 to display the strength of the leakage wave, etc. to the outside.

That is, when the radio wave leakage signal is detected in the leak propagation detection step S1, the detected radio wave leakage signal is received in the radio wave leakage state detection step S2, and the strength of the received radio wave leakage signal is set to one or more threshold levels. In comparison with, it is displayed step by step to correspond to the threshold level according to the strength of the radio wave leakage signal.

This will be described in more detail.

The radio wave leakage signal detected in the above-mentioned leak wave detection step S1 is received by the leak signal amplifier 32 to extract only a predetermined signal, and amplify and output the extracted signal. This step is a leakage signal amplifying step S2-1.

Subsequently, the signal input in the leakage signal amplifying step S2-1 is demodulated by the detector 34 to restore the voice signal, and the converted voice signal is smoothed and converted into a voltage level. This step is a detection step S2-2.

Subsequently, the intensity of the voice signal converted into the voltage level in the detection step (S2-2) is compared with one or more threshold levels preset in the display unit 36, and is output stepwise to correspond to the threshold level according to the comparison result. do. This step is a leak state display step (S2-3).

At this time, in order to display the leakage state, the respective light emitting diodes of the display unit 37A, which is the alarm means 37 provided according to the threshold level, are displayed by lighting up differentially. This step is a display step S2-3A. Then, the output sound having a size divided according to the threshold level is generated to the output sound generator 37B. This step is an output sound generating step (S2-3B).

As described above, after detecting the leakage of the radio wave due to the poor connection of the cable connector 110 connecting the communication device 100 with the radio wave leakage direction detecting antenna 22, the radio wave leaked from the corresponding connector 110 is detected. By detecting the strength and displaying it on the leakage state display unit 36, it is possible to easily recognize the connection failure (unwinding) state of the connector 110 without disconnecting the connector 110, thereby facilitating maintenance of the transmission network. Not only can be made, but the cost of maintenance of the transmission network can be reduced, and the noise due to the poor connection of the connector 110 can be found and maintained, thereby significantly increasing the quality of the transmission network.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the present invention is provided by the person skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

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FIG. 2 is a schematic block diagram for explaining the configuration of the HFC transmission network connection state detection apparatus shown in FIG.

3A and 3B are schematic block diagrams showing usage states of the HFC transmission network connection state detection apparatus shown in FIG. 1;

FIG. 4 is a block diagram illustrating a method of detecting an HFC transmission network connection state using the HFC transmission network connection state detecting apparatus shown in FIG.

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

10: main body 20: leakage propagation detecting member

22: antenna for detecting radio wave leakage direction 24: antenna for connector measurement

30: radio wave leakage state detection unit 32: leakage signal amplification unit

34 detection part 36 leakage state display part

37: alarm means 37A: display unit

37B: output sound generator 100: communication equipment

110: connector

Claims (9)

Detects the connection status of the cable connectors 110 interconnecting the communication device 100 including an optical transceiver (ONU), a trunk branch amplifier (TBA), and a branch connector (TAP-OFF) on a hybrid fiber coaxial (HFC) transmission network. As a device for A leakage propagation detecting member 20 connected to one side of the main body 10 to detect a radio wave leakage signal generated at the connector 110 between the communication devices 100; Is electrically connected to the leak propagation detecting member 20 to receive a radio wave leakage signal detected by the leak propagation detecting member 20, and compares the strength of the received radio wave leakage signal with one or more preset threshold levels, A propagation leakage state detection unit 30 for displaying the steps in correspondence with the threshold level according to the strength of the propagation leakage signal; And HFC transmission network connection state detection device, characterized in that consisting of a power supply unit for supplying power to the radio wave leakage state detection unit (30). The method according to claim 1, The leak wave detection member 20, A radio wave leakage direction detecting antenna 22 for detecting a direction in which radio waves leak in an area in which the communication devices 100 are installed; And When the communication device 100 located in the direction in which the radio wave is leaked through the radio wave leakage direction detecting antenna 22 is detected, it leaks from the connector 110 in contact with the connector 110 of the detection target communication device 100. HFC transmission network connection state detection device, characterized in that consisting of a connector measuring antenna 24 for detecting the radio waves. The method according to claim 2, The radio wave leakage state detection unit 30, The leakage signal amplifying unit 32 is electrically connected to the leak wave detecting member 20 to receive a signal detected by the leak wave detecting member 20, extracts only a predetermined signal, and amplifies and outputs the extracted signal. ; A detector (34) for demodulating the signal input from the leakage signal amplifying unit (32) to restore a voice signal, and smoothing the restored voice signal to convert the voltage signal into a voltage level; And Leak state display unit for comparing the intensity of the voice signal converted into the voltage level with one or more preset threshold level, and outputs step by step to correspond to the threshold level through the alarm means 37 provided in accordance with the comparison result ( 36. An apparatus for detecting HFC transmission network connection, comprising: 36). The method of claim 3, The alarm means 37, A display unit 37A for differentially lighting one or more light emitting diodes provided according to the threshold level; And And an output sound generator (37B) for generating output sounds of a predetermined size according to the threshold level. The method according to any one of claims 1 to 4, The power supply unit 40 is HFC transmission network connection state detection device, characterized in that consisting of a jack for connecting a battery or an external power source. A method for detecting a connection state of a cable connector interconnecting a communication device including an optical transceiver (ONU), a trunk branch amplifier (TBA), and a branch connector (TAP-OFF) on a hybrid fiber coaxial (HFC) transmission network. A leak propagation detecting step (S1) of detecting a radio wave leakage signal generated at a connector between each communication device; And Receive the radio wave leakage signal detected in the leak wave detection step (S1), and compares the intensity of the received radio wave leakage signal with one or more preset threshold level, to correspond to the threshold level according to the strength of the radio wave leakage signal HFC transmission network connection state detection method characterized in that it comprises a radio wave leakage state detection step (S2) to display step by step. The method according to claim 6, The leak wave detection step (S1), A radio wave leakage direction detecting step (S1-1) of detecting a direction in which radio waves leak in an area in which the respective communication devices are installed; And In the case of detecting the communication device located in the direction of the radio wave leakage in the radio wave leakage direction detection step (S1-1), in contact with the connector of the detection target communication device connector radio wave leakage measuring step (S1) -2) HFC transmission network connection status detection method comprising a. The method according to claim 6 or 7, The radio wave leakage state detection step (S2), A leakage signal amplifying step (S2-1) of receiving the radio wave leakage signal detected in the leak propagation detecting step (S1), extracting only a predetermined signal, and amplifying and outputting the extracted signal; A detection step (S2-2) of demodulating the signal input in the leakage signal amplifying step to restore a voice signal, and smoothing the restored voice signal to convert the voltage signal into a voltage level; And A leakage state display step of comparing the intensity of the voice signal converted into a voltage level in the detection step (S2-2) with one or more preset threshold levels and outputting stepwise to correspond to the threshold level according to the comparison result ( S2-3) HFC transmission network connection status detection method comprising a. The method according to claim 8, The leak state display step (S2-3), A display step (S2-3A) for differentially turning on and displaying one or more light emitting diodes provided according to the threshold level; And And an output sound generation step (S2-3B) for generating output sounds of a predetermined size according to the threshold level.

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