KR101743533B1 - Outlet cable integrity assessment apparatus and method thereof - Google Patents

Outlet cable integrity assessment apparatus and method thereof Download PDF

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Publication number
KR101743533B1
KR101743533B1 KR1020150064028A KR20150064028A KR101743533B1 KR 101743533 B1 KR101743533 B1 KR 101743533B1 KR 1020150064028 A KR1020150064028 A KR 1020150064028A KR 20150064028 A KR20150064028 A KR 20150064028A KR 101743533 B1 KR101743533 B1 KR 101743533B1
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South Korea
Prior art keywords
signal
wiring
outlet wiring
impedance
outlet
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KR1020150064028A
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Korean (ko)
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KR20160131516A (en
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김택희
전정채
유재근
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한국 전기안전공사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R31/02—
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/11—Locating faults in cables, transmission lines, or networks using pulse reflection methods

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The present invention relates to an apparatus and method for evaluating the electrical properties of an outlet wiring, and more particularly to an apparatus and method for evaluating electrical wiring fault of an outlet wiring based on an application signal provided to an outlet wiring, The integrity of the outlet wiring can be easily evaluated according to the evaluation of the soundness and the accident due to the electrical error of the outlet wiring can be prevented in advance as the driving of the branch breaker is controlled according to the evaluation result of the outlet wiring integrity, Outlet Wiring Through the communication network, it is possible to shorten the follow-up time according to the result of the evaluation of the outlet wiring integrity as it is transmitted to the concerned institution located at the remote place.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an outline wiring integrity evaluation apparatus and method,

The present invention relates to an apparatus and method for evaluating the integrity of an outlet wiring, more particularly, to an apparatus and a method for accurately diagnosing whether or not an outlet wiring is faulty based on the signal applied to the outlet wiring and the impedance and phase of the signal to be taken .

In recent years, it has been known that the main cause of an airplane crash due to an abnormality of gas is the destruction of insulation of electrical wiring. In addition, there is a demand for a high stability in electric wiring such as a control system of a nuclear power plant, a space shuttle, a submarine, Reliability diagnosis and evaluation of electrical wiring is an important factor when the system is in an increasing trend.

Also, it is an important technical problem to diagnose and diagnose the abnormality of the accurate wire for the evaluation and verification of the quality of the wire produced in various types of wire production sites.

Therefore, the diagnosis of the presence of such a conductor and the position measurement technique, that is, the wiring diagnosis system, have been performed so far so that the reflectometry method (Reflectometry) for diagnosing the abnormality of the conductor by measuring a reflected signal after transmitting a certain signal to the conductor Respectively.

The reflected wave measurement method is performed only in the time domain or the frequency domain. The reflected wave measurement method measures a signal that is reflected and transmitted after transmitting a certain signal to the conductor, and detects defects such as open, short, discontinuity (TDR), standing wave reflectometer (SWR), and frequency domain reflected wave measurement (FDR) methods, which measure the characteristic impedance of a fault, presence or absence of a fault, Frequency Domain Reflectometry).

This reflection measurement method was able to monitor the presence or absence of faults such as open, short, and discontinuity of the conductor, the position of the defect, and the characteristic impedance measurement of the conductor.

However, this method provides satisfactory performance in the accuracy of the defect location estimation of the lead wire, but it requires a lot of calculation amount and has problems that can not be overlooked in real time implementation.

Therefore, the present invention proposes a method for evaluating the electrical integrity of the outlet wiring by monitoring the electrical error of the outlet wiring based on the applied signal provided to the outlet wiring, which is the cable to be inspected, and the impedance and phase of the obtained reflected signal.

SUMMARY OF THE INVENTION The present invention has been conceived to solve such a problem, and an object of the present invention is to provide a method of detecting a fault type of an outlet wiring based on an applied signal provided to an outlet wiring, It is an object of the present invention to provide an apparatus and method for evaluating the integrity of an outlet wiring which can evaluate the integrity of the outlet wiring simply.

Another object of the present invention is to provide an apparatus and a method for evaluating the electrical performance of an outlet wiring which can prevent an accident caused by an electrical error of the outlet wiring by controlling the drive of the branch breaker according to the evaluation result of the outlet wiring integrity In the future.

Yet another object of the present invention is to provide an outlet wiring integrity evaluating apparatus and method capable of shortening the subsequent processing time in accordance with the evaluation result of the outlet wiring integrity by transmitting the outlet wiring integrity to a relevant institution located at a remote location via a communication network In order to solve the problem.

According to an aspect of the present invention, there is provided an apparatus for evaluating the integrity of an outlet wiring,

An application signal generating unit for transmitting an application signal of predetermined frequency to an outlet wiring provided at a predetermined distance,

A reflection signal receiving unit for receiving a reflection signal acquired by the outlet wiring;

And a signal analyzer for evaluating the integrity of the receptacle wiring by discriminating an electrical error of the receptacle wiring based on the characteristic impedance and the phase of the applied signal and the reflected signal.

Preferably, the electrical error

A short-circuit, an open-circuit, and a connection failure of the outlet wiring.

Preferably, the signal analyzing unit includes:

When the impedance of the reflection signal is smaller than the impedance of the application signal and the application signal and the reflection signal are in opposite phases, it is determined that the outlet wiring is short-circuited and the outlet wiring integrity is evaluated to be low.

Preferably, the signal analyzing unit includes:

Generates a control signal for interrupting the function of the external contact input when the outlet wiring is short-circuited,

The apparatus comprises:

And a branch breaker which receives a control signal of the signal analyzer and blocks external contact input.

Preferably, the signal analyzing unit includes:

When the impedance of the reflection signal is larger than the impedance of the application signal and the phase of the reflection signal is equal to the phase of the reflection signal, it is determined that the outlet wiring is open and the outlet wiring integrity is evaluated to be low.

Preferably, the signal analyzing unit includes:

When the impedance of the reflection signal is smaller than the impedance of the application signal and the phases of the application signal and the reflection signal are the same and an irregular reflection signal is observed, it is determined that the connection of the outlet connection is defective, .

Preferably,

And a display unit for displaying an electrical error of an outlet wiring of the signal analyzing unit.

Preferably,

And a communication unit for transmitting electrical errors, an application signal, and a reflection signal of the outlet wiring of the signal analyzing unit to an institution server located at a remote location, thereby evaluating the outlet wiring integrity and repairing the poor outlet wiring.

According to another aspect of the present invention, there is provided a method of evaluating the integrity of an outlet wiring,

An application signal generation step of transmitting an application signal of a predetermined frequency to an outlet wiring provided at a predetermined distance,

A reflection signal reception step of receiving a reflection signal acquired by the outlet wiring;

And a signal analyzing step of evaluating the integrity of the receptacle wiring by diagnosing an electrical error of the receptacle wiring based on the impedance and the phase of the applied signal and the reflected signal.

Preferably, the electrical error

A short-circuit, an open-circuit, and a connection failure of the outlet wiring.

Preferably, the signal analysis step comprises:

When the impedance of the reflection signal is smaller than the impedance of the application signal and the application signal and the reflection signal are in opposite phases, it is determined that the outlet wiring is short-circuited, and the outlet wiring integrity is evaluated to be low.

Preferably, the signal analysis step comprises:

And a controller for generating a control signal for interrupting the function of the external contact input when the outlet wiring is short-circuited, and then providing the control signal to the branch breaker to cut off the external contact input.

Preferably, the signal analysis step comprises:

When the impedance of the reflection signal is larger than the impedance of the application signal and the phase of the reflection signal is equal to the phase of the reflection signal, it is determined that the outlet wiring is open and the outlet wiring integrity is evaluated to be low.

Preferably, the signal analysis step

When the impedance of the reflection signal is smaller than the impedance of the application signal and the phase of the application signal and the reflection signal are the same and an irregular reflection signal is observed, the outlet connection is judged to be a connection failure, .

According to the present invention, by detecting the type of failure of electrical errors in the outlet wiring based on the applied signal provided to the outlet wiring, which is the cable to be inspected, and the impedance and phase of the reflected signal to be obtained, And it is advantageous in that an accident due to an electrical error of the outlet wiring can be prevented in advance as the drive of the branch circuit breaker is controlled according to the evaluation result of the outlet wiring integrity.

Further, according to the present invention, since the integrity of the outlet wiring is transmitted to a related institute located at a remote place through a communication network, the following processing time can be shortened according to the evaluation result of the outlet wiring integrity.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as limiting.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a diagram showing a configuration of an outlet wiring integrity test apparatus according to an embodiment of the present invention. Fig.
2 is a flowchart illustrating an outline wiring integrity evaluation process according to another embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus and method for evaluating an outlet wiring integrity according to the present invention will be described in detail below with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a view showing an apparatus for evaluating the integrity of an outlet wiring according to an embodiment of the present invention, and an apparatus for evaluating an outlet wiring integrity according to an embodiment of the present invention will be described with reference to FIG.

That is, as shown in Fig. 1, the apparatus for evaluating the electrical outline wiring integrity according to the embodiment of the present invention is a device for evaluating the electrical properties of the outlet wiring on the basis of the application signal provided to the outlet wiring, The apparatus includes an application signal generator 100, a reflection signal receiver 200, a signal analyzer 300, a signal analyzer 300, and a signal analyzer 300. The signal analyzer 300 is provided to evaluate an outline wiring integrity by simply detecting the type of failure of an electrical error, A blocking unit 400, and a communication unit 500.

The application signal generator 100 generates an application signal whose frequency increases linearly with time according to a predetermined gauge time envelope linear chuck signal and then propagates the generated application signal through the outlet wire.

The reflection signal receiving unit 200 is provided to acquire a part of the propagated application signal. If there is a problem region of the outline wiring, the magnitude of the applied signal is attenuated and the phase is deformed according to the wiring characteristic. At this time, the degree of attenuation of the applied signal magnitude and the degree of deformation of the phase depend on the frequency and distance of the signal This is reflected in the propagation constant of the cable.

In addition, the signal analyzer 300 analyzes the application signal and the reflection signal through a predetermined signal analysis technique to detect a failure location and a failure type of the cable.

Here, the signal analysis technique may be variously applied to TDR (Time Domain Reflectometry), FTDR (Frequency Domain Reflectometry), TFDR (Time Frequency Domain Reflectometry), STDR (Sequence Time Domain Reflectometry) and SSTDR (Spread Spectrum Time Domain Reflectometry) However, in the embodiment of the present invention, it is preferable that it is made of TDR (Time Domain Reflectometry).

The signal analyzing unit 300 using the signal analysis technique of the TDR determines whether or not the difference between the applied position of the applied signal and the acquired position of the reflected signal is equal to or greater than a predetermined threshold value on the basis of the time delay value and the predetermined propagation velocity, The distance of the point is detected.

The process of detecting the abnormal point distance in the signal analyzer 300 using the signal analysis technique of the TDR is the same as the general procedure of deriving the fault location based on the time delay value and the propagation velocity using the general reflectance measurement method similar.

Meanwhile, the signal analyzer 300 determines the type of electrical error based on the characteristic impedance and the phase of the receptacle wiring. Here, the electrical error refers to short-circuit, open-circuit, and connection failure of the outlet wiring.

That is, when the characteristic impedance of the outlet wiring changes, the signal analyzing unit 300 generates a reflection phenomenon. If reflection phenomenon occurs in an opposite phase at an impedance point smaller than the characteristic impedance of the outlet wiring, the electrical error of the outlet wiring is short- .

The apparatus for evaluating the integrity of an outlet wiring line according to an embodiment of the present invention further includes a branch breaker 400 provided at a predetermined position of the power supply unit to cut off external contact input when the electrical error of the signal analysis unit 300 is short- .

That is, the branch circuit breaker 400 cuts off the input of the external contact, and when the electrical error of the signal analyzer 300 is short-circuited, Disconnect power to outlet wiring.

The signal analyzing unit 300 generates a reflection phenomenon when the characteristic impedance of the receptacle wiring is changed. When the reflection phenomenon of the same phase occurs at an impedance point larger than the characteristic impedance of the receptacle wiring, the electrical error of the receptacle wiring is opened .

In addition, when the characteristic impedance of the outlet wiring varies, the signal analyzing unit 300 generates a reflection phenomenon. When reflection phenomenon of the same phase occurs irregularly at an impedance point smaller than the characteristic impedance of the outlet wiring, As a connection failure.

As described above, the electrical error of the signal analysis unit 300 is displayed through the display unit 500 provided at a predetermined position in the house so as to evaluate the integrity of the outlet wiring. At this time, the integrity of the outlet wiring against the electrical error of the outlet wiring is displayed through the normal GUI (Graphic User Interface) program.

Meanwhile, the apparatus for evaluating the integrity of the receptacle wiring according to the embodiment of the present invention is characterized in that the receptacle wiring integrity evaluating apparatus according to the embodiment of the present invention includes: A communication unit 600 is further provided.

Here, the communication unit 600 is a communication network for connecting between the signal analysis unit 300 and a server of a related organization (not shown), and may be connected to various communication networks such as Ethernet, CDMA, WiFi, and IP But is not limited to, and is not limited to a specific type, as long as it is a wired or wireless communication network that enables a communication network.

The communication unit 600 transmits the application signal and the reflection signal to the server of the relevant institution through the communication network connected between the signal analysis unit 300 and the server of the related institution at a remote location, The server evaluates the electrical integrity of the outlets for which an electrical error has occurred in the outlets, and then communicates the results of the evaluation to the relevant parties. Repairing of the corresponding outlet wiring where an electrical error occurred is performed.

Accordingly, by detecting the type of failure of the electrical wiring of the outlet wiring based on the applied signal provided to the outlet wiring of the cable to be inspected and the impedance and phase of the reflected signal to be obtained, it is possible to easily evaluate the outlet wiring integrity According to the evaluation result of the outlet wiring integrity, it is possible to prevent an accident caused by an electrical error of the outlet wiring by controlling the driving of the branch breaker, and it is possible to prevent the accident As a result, it is possible to shorten the subsequent processing time according to the evaluation result of the outlet wiring integrity.

It will be appreciated that the electrical errors of the cable under test, the location of the cable failure and the history of the failure type are stored and managed in a memory provided in a predetermined area of the signal analyzer or in a separate memory.

Evaluate the type of failure of the electrical error of the outlet wiring based on the applied signal provided to the outlet wiring of the inspected cable and the impedance and phase of the obtained reflected signal to evaluate the outlet wiring integrity to simply evaluate the outlet wiring integrity A series of processes will be described with reference to Fig.

FIG. 2 is a flow chart showing the operation of the apparatus for evaluating the integrity of the receptacle shown in FIG. 1. Referring to FIG. 2, a process for evaluating the integrity of the receptacle wiring according to another embodiment of the present invention will be described.

First, the signal analyzing unit 300 receives a reflection signal of an outlet wiring where an electrical error is generated, with respect to an application signal of the predetermined signal generating unit 100 having a predetermined frequency (steps S1 and S2).

As a result of analyzing the reflected signal with respect to the applied signal, the signal analyzing unit 300 generates a reflection phenomenon when the characteristic impedance of the outlet wiring changes, and a reverse phenomenon occurs at an impedance point smaller than the characteristic impedance of the outlet wiring The electrical error of the outlet wiring is judged as a short circuit (steps S3 and S4).

The signal analyzer 300 generates a control signal for shutting off the branch circuit breaker 400 when the electrical error of the receptacle wiring is short, and then transmits the control signal to the branch circuit breaker 400, External contact input is cut off.

The signal analyzer 300 determines that the electrical error of the receptacle wiring is released when a reflection phenomenon occurs when the characteristic impedance of the receptacle wiring is changed and a reflection phenomenon of the same phase occurs at an impedance point larger than the characteristic impedance of the receptacle wiring. (Steps S6 and S7).

Meanwhile, when the characteristic impedance of the outlet wiring varies, the signal analyzing unit 300 generates a reflection phenomenon. When reflection phenomenon of the same phase occurs irregularly at an impedance point smaller than the characteristic impedance of the outlet wiring, It is determined that the error is a connection failure (steps S8 and S9).

The result of the determination of the electrical error in steps S5, S7, and S9 is transmitted to the display unit 500, and the display unit 500 processes and displays an electrical error for the outlet wiring in step S10.

In addition, the determination result of the electrical error in steps S5, S7, and S9 is transmitted to the server of the related institute located at the remote place through the communication unit 600, and the corresponding agency server transmits the electric error of the outlet wiring The integrity of the outlet wiring is evaluated based on the application signal and the reflection signal, and the integrity of the outlet wiring is transmitted to the relevant person (step S11).

According to the embodiment of the present invention, by detecting the type of failure of electrical errors in the receptacle wiring based on the applied signal provided to the receptacle wiring to be inspected and the impedance and phase of the reflected signal to be obtained, It is possible to evaluate the integrity of the outlet wiring and to prevent the accident caused by electrical errors of the outlet wiring by controlling the drive of the branch breaker according to the evaluation result of the outlet wiring integrity, , It is possible to shorten the subsequent processing time according to the evaluation result of the outlet wiring integrity.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in the form of a program form which may be performed via a variety of computing means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the technical scope of the present invention should be defined by the following claims.

By evaluating the fault type of the electrical fault of the outlet wiring based on the applied signal provided to the outlet wiring of the cable to be inspected and the impedance and phase of the obtained reflected signal, it is possible to easily evaluate the outlet wiring integrity by evaluating the outlet wiring integrity , It is possible to prevent an accident caused by an electrical error of the outlet wiring by controlling the drive of the branch circuit breaker according to the evaluation result of the outlet wiring integrity, The accuracy and reliability of operation and reliability of the apparatus and method for evaluating the integrity of the outlet wiring which can shorten the subsequent processing time according to the evaluation result of the outlet wiring integrity according to the delivery, / Resource exploration, material surface inspection, It is not only the possibility of commercialization or sales of wiring systems such as sonar, network network wiring, fiber optic cable diagnosis, remote sensing, fluid wave pipe leakage diagnosis, water level measurement, etc., but it is practically possible to carry out clearly. to be.

Claims (14)

An application signal generating unit for transmitting an application signal of predetermined frequency to an outlet wiring provided at a predetermined distance,
A reflection signal receiving unit for receiving a reflection signal acquired by the outlet wiring;
And a signal analyzer for evaluating the integrity of the receptacle wiring by determining the electrical error of the receptacle wiring based on the characteristic impedance and the phase of the applied signal and the reflected signal,
Wherein the signal analyzer comprises:
It is judged that the outlet wiring is short-circuited when the impedance of the reflection signal is smaller than the impedance of the application signal and the application signal and the reflection signal are in opposite phases,
When the impedance of the reflected signal is larger than the impedance of the applied signal and the phases of the applied signal and the reflected signal are the same, it is determined that the outlet wiring is opened,
When the impedance of the reflection signal is smaller than the impedance of the application signal and the phase of the application signal and the reflection signal are the same and an irregular reflection signal is observed, the outlet connection is judged to be a connection failure, Wherein the electrical connector is electrically connected to the connector.
delete delete The apparatus of claim 1,
Generates a control signal for interrupting the function of the external contact input when the outlet wiring is short-circuited,
The apparatus comprises:
Further comprising a branch breaker for receiving a control signal of the signal analyzer and interrupting an external contact input.
delete delete 2. The apparatus of claim 1,
Further comprising a display unit for displaying an electrical error of an outlet wiring of the signal analyzing unit. 2. The apparatus of claim 1,
Further comprising a communication unit for transmitting an electrical error, an application signal, and a reflection signal of an outlet wiring of the signal analyzing unit to an engine server located at a remote location to evaluate the outlet wiring integrity and to repair the outlet wiring with low soundness. Soundness evaluation device. An application signal generation step of transmitting an application signal of a predetermined frequency to an outlet wiring provided at a predetermined distance,
A reflection signal reception step of receiving a reflection signal acquired by the outlet wiring;
And a signal analysis step of evaluating the integrity of the outlet wiring by diagnosing an electrical error of the outlet wiring based on the impedance and the phase of the applied signal and the reflected signal,
Wherein the signal analysis step comprises:
It is judged that the outlet wiring is short-circuited when the impedance of the reflection signal is smaller than the impedance of the application signal and the application signal and the reflection signal are in opposite phases,
When the impedance of the reflected signal is larger than the impedance of the applied signal and the phases of the applied signal and the reflected signal are the same, it is determined that the outlet wiring is opened,
When the impedance of the reflection signal is smaller than the impedance of the application signal and the phase of the application signal and the reflection signal are the same and an irregular reflection signal is observed, the outlet connection is judged to be a connection failure, Wherein said method comprises the steps of: delete delete 10. The method of claim 9,
Wherein when the outlet wire is short-circuited, a control signal for shutting off the function of the external contact input is generated and then provided to the branch breaker to cut off the external contact input.
delete delete
KR1020150064028A 2015-05-07 2015-05-07 Outlet cable integrity assessment apparatus and method thereof KR101743533B1 (en)

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KR20200086048A (en) 2019-01-08 2020-07-16 주식회사 대정밸브 Safety valve for hydrogen charging stations
KR102627922B1 (en) * 2021-11-04 2024-01-23 국방과학연구소 Method and apparatus for detecting circuit defects using high-frequency input waves and reflected waves
KR102385698B1 (en) * 2021-11-19 2022-04-14 대평엔지니어링(주) Inspection systemfor electric cable of apartment house

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