KR101628353B1 - Measuring Apparatus for Return Current - Google Patents

Measuring Apparatus for Return Current Download PDF

Info

Publication number
KR101628353B1
KR101628353B1 KR1020150154783A KR20150154783A KR101628353B1 KR 101628353 B1 KR101628353 B1 KR 101628353B1 KR 1020150154783 A KR1020150154783 A KR 1020150154783A KR 20150154783 A KR20150154783 A KR 20150154783A KR 101628353 B1 KR101628353 B1 KR 101628353B1
Authority
KR
South Korea
Prior art keywords
return current
current
board
return
processing board
Prior art date
Application number
KR1020150154783A
Other languages
Korean (ko)
Inventor
이병곤
이영수
이형준
최정규
Original Assignee
한국철도공사
(주)테크빌
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국철도공사, (주)테크빌 filed Critical 한국철도공사
Priority to KR1020150154783A priority Critical patent/KR101628353B1/en
Application granted granted Critical
Publication of KR101628353B1 publication Critical patent/KR101628353B1/en

Links

Images

Classifications

    • 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
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/22—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-emitting devices, e.g. LED, optocouplers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/16—Spectrum analysis; Fourier analysis
    • G01R23/165—Spectrum analysis; Fourier analysis using filters
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mathematical Physics (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

The present invention relates to a return current measuring apparatus to improve operations as well as maintenance and repair through modulation of the return current measuring apparatus among components of a signal measuring apparatus installed and operated in a high speed train. The return current measuring apparatus comprises: a return current reception board for receiving return current from an antenna and for processing data, and then for transmitting the data to a return current processing board, as a component of a signal measuring apparatus installed and operated in a high speed train; the return current processing board for performing a first sampling on the return current received from the return current reception board and for comparing left return current and right return current, thereby transmitting the return current to a user terminal, as a module provided independent of the return current reception board; and the user terminal for performing a second sampling on the return current received from the return current processing board and then for displaying the return current on a monitor. According to the return current measuring apparatus of the present invention, an RT card comprising a return current measuring apparatus among components of a signal measuring apparatus installed and operated in a high speed train is separately formed into a reception module and a processing module, thereby improving operations as well as maintenance and repair, and minimizing a measuring error.

Description

{Measuring Apparatus for Return Current}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retrace current detecting apparatus, and more particularly, to a retrace current detecting apparatus, which is installed in a high-speed train, ≪ / RTI >

Currently, a signal detection device installed on a high-speed train is for detecting various kinds of signals transmitted from the ground by trains and judging whether there is an abnormality in the signal transmission system. As a component of such a signal detection device, Receives and compares the return currents transmitted onboard through the continuous information antenna to determine whether there is an abnormality.

As shown in Fig. 1, the conventional retrace current detecting apparatus 50 is configured to include an RT card 51 and a PC 55. Fig.

The RT card 51 receives the return current received through the antenna 10, amplifies and filters the received return current, and transmits the amplified return current to the PC 55 through the serial communication method.

The PC 55 samples the return current information received from the RT card 51, compares the left and right return currents, and displays them on the monitor of the PC 55. [

The conventional return current detection device 50 amplifies and filters the left return current and the right return current received from the antenna 10 by the RT card 51 which is the core of the detection device, PC 55, and the PC 55 compares the left return current information and the right return current information.

However, most of the function of detecting the return current in the RT card 51 constituted by one module has a problem that much time and expense are required to identify and repair the cause when the RT card 51 fails.

Korean Registered Patent Publication No. 10-1356120

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide an RT card which is installed in a high-speed train and constitutes a back- And to provide a retrace current detection device capable of minimizing a detection error.

In order to accomplish the above object, the present invention provides a return current detecting apparatus comprising: a return current receiving board for receiving a return current from an antenna and for transmitting data to a return current processing board after data processing; A return current processing board for comparing the return current received from the return current receiving board with the first sampling and comparing the left return current and the right return current to the user terminal, And a user terminal for displaying the image as a post monitor.

Wherein the return current receiving board receives the left return current and the right return current from the left and right continuous information antennas and performs differential amplification using the OP-AMP; A filtering unit that receives the left return current and the right return current amplified through the amplifying unit and blocks other frequencies except for the return current frequency using a bandpass filter; An RMS conversion unit for converting the left back electromotive force and the right electromotive force filtered through the filtering unit into an effective value by using an RMS conversion IC and a left return current and a right electromotive force current converted into an effective value through the RMS conversion unit, And an A / D converter for converting the digital value into a digital value.

The return current processing board includes a first sampling unit for receiving the digitized left turn-back current and the right turn-back current through the A / D conversion unit and sampling at a preset interval, and a first sampling unit for sampling the left turn- And a comparator for comparing the currents.

The user terminal may include a second sampling unit for receiving a comparison value of the left backward current and the right backward current through the comparison unit, sampling the predetermined value at a predetermined interval, and displaying the sampled value on a monitor.

If the difference between the left back electromotive force and the right electromotive force is 10% or more in the user terminal, it can be judged that a problem has occurred in the line.

The return current receiving board and the return current processing board are connected by a pin connection method through a mother board, and the return current processing board and the user terminal can be connected by a LAN communication method comprising one connection line.

The return current receiving board is provided with an LED indicating power connection, an LED indicating reception of left and right return currents, and an LED indicating communication connection with the return current processing board. The return current processing board includes an LED, An LED indicating a communication connection with the return current receiving board, and an LED indicating a communication connection with the user terminal.

According to the backward current detecting apparatus of the present invention as described above, the RT card, which constitutes a backward current detecting apparatus among the signal detecting apparatus components installed in the high-speed train, is divided into the receiving module and the processing module, And the detection error can be minimized.

1 is a block diagram showing a conventional retrace current detecting apparatus,
FIG. 2 and FIG. 3 are block diagrams showing a return current detection apparatus according to an embodiment of the present invention,
FIG. 4 and FIG. 5 are views showing examples of installation states of a return current detection device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to easily carry out the present invention.

2, the return current detecting apparatus 500 according to an embodiment of the present invention is one of the components of a signal detecting apparatus that can be installed and operated in a high speed railway train, 510, a return current processing board 530, and a user terminal 550.

The retrace current receiving board 510 receives the retrace current from the antenna 100 and transmits the data to the retrace current processing board 530 after data processing and includes an amplification unit 511, a filtering unit 513, an RMS conversion unit 515, and an A / D conversion unit 517.

The antenna 100 is installed at the lower end of the front of the high-speed train to receive the continuous information signal transmitted through the track circuit.

Here, the continuous information signal is information continuously transmitted on a track through a track circuit, and may include train speed control information and track information such as target distance information, speed code information, running line information, have.

The amplifying unit 511 receives the left backward current and the right backward current from the left continuous information antenna 110 and the right continuous information antenna 150 and performs differential amplification using the OP-AMP.

The left return current and the right return current have values of up to 60 Hz, 300mV / 600A.

The filtering unit 513 receives the left back electromotive force and the right electromotive force from the amplifying unit 511 and uses the band-pass filter (BPF) to cut off other frequencies except for the return current frequency.

The RMS conversion unit 515 converts the filtered left return current and the right feedback current through the filtering unit 515 to an RMS value using the RMS conversion IC.

The A / D converter 517 converts the left-side return current and the right-side return current, which have been converted into the effective value through the RMS converting unit 515, into a digital value using the A / D converter IC.

The retrace current processing board 530 compares the retrace current received from the retrace current receiving board 510 with the first sampling and the left retrace current and the right retrace current to the user terminal and includes a first sampling unit 531, And a comparison unit 535. [

The first sampling is preferably in units of 100 ms, but can be adjusted depending on the situation.

The first sampling unit 531 receives the digitized left turn back current and the right turn current through the A / D converter 517 and samples at a preset interval. The comparator 535 compares the first sampling And compares the sampled left turn-back current and the right turn-back current with each other.

The user terminal 550 performs a second sampling of the return current received from the return current processing board 530 and displays it on the monitor so that the comparison between the left back current and the right back current through the comparison unit 535 And a second sampling unit 551 for receiving the value and sampling it at a predetermined interval and displaying it on the monitor.

Secondary sampling is preferably performed in units of 100 ms, but it is adjustable according to the situation, and a comparison value of the sampled return current is displayed on the user terminal through a separate application program.

The user terminal 550 determines that a problem has occurred in the line if the difference between the left-side return current and the right-side return current is 10% or more.

The return current receiving board 510 and the return current processing board 530 are independent of each other and are provided as independent modules.

4, the return current receiving board 510 and the return current processing board 530 are connected to the return current receiving board 510 and the return current processing board 530 of the signal testing apparatus installed in the high speed train, And is connected to a connector 590 through a mother board provided at the rear side in a pin connection manner and is connected to the return current processing board 530 and the user terminal 550. [ Are connected by a LAN communication method comprising one connection line.

5, the return current receiving board 510 is provided with an LED indicating power connection, an LED 518 indicating reception of the left and right return currents, an LED 519 indicating communication connection with the return current processing board An LED 538 for communicating with the return current receiving board 510 and an LED 539 for communicating with the user terminal 550. The LED 538 is connected to the return current processing board 530, .

Since the return current receiving board 510 and the return current processing board 530 are independently provided, it takes time to repair only one of the return current receiving board 510 and the return current processing board 530. Therefore, Cost is saved.

The connection between the return current receiving board 510 and the return current processing board 530 is connected through the mother board, thereby making it possible to remarkably reduce errors in detecting the return current due to external interference, such as a conventional cable and connector abnormality.

Since the digital data is transmitted from the return current processing board 530 to the user terminal 550, the conventional DAQ is unnecessary, thereby reducing the cost.

Since the connection state between the return current receiving board 510, the return current processing board 530, and the user terminal 550 is indicated by an LED as well as the power connection state, the operation state of the detecting apparatus can be easily confirmed, And maintenance is convenient.

By changing the return current processing board 530 and the user terminal 550 to the LAN communication method, the two connection lines used in the conventional serial communication are changed into one connection line due to the LAN communication, .

According to the backward current detecting apparatus of the present invention as described above, the RT card, which constitutes a backward current detecting apparatus among the signal detecting apparatus components installed in the high-speed train, is divided into the receiving module and the processing module, And detection errors can be minimized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of illustration, It will be readily apparent that various substitutions, modifications, and alterations can be made herein.

100: antenna 510: return current receiving board
511: Amplification unit 513: Filtering unit
515: RMS conversion section 517: A / D conversion section
530: Return current processing board 531: First sampling unit
535: comparison unit 550:
551: second sampling unit

Claims (7)

A return current receiving board which receives the return current from the antenna and transmits the data to the return current processing board after data processing;
A return current processing board which is provided independently of the return current receiving board, for comparing the return current received from the return current receiving board with the first sampling and comparing the left return current and the right return current to the user terminal; And
And a user terminal for performing a second sampling of the return current received from the return current processing board and displaying the resultant signal on a monitor;
Wherein the return current receiving board receives the left return current and the right return current from the left and right continuous information antennas and performs differential amplification using the OP-AMP; A filtering unit that receives the left return current and the right return current amplified through the amplifying unit and blocks other frequencies except for the return current frequency using a bandpass filter; An RMS conversion unit for converting the left back electromotive force and the right electromotive force filtered through the filtering unit into an effective value by using an RMS conversion IC and a left return current and a right electromotive force current converted into an effective value through the RMS conversion unit, And an A / D converter for converting the digital value into a digital value by using the A / D converter. delete The backlight current processing board of claim 1, wherein the return current processing board comprises: a first sampling unit for receiving the digitized left turn current and the right turn current through the A / D converter and sampling at predetermined intervals; And a comparison section for comparing the return current and the right return current. [4] The apparatus of claim 3, wherein the user terminal comprises a second sampling unit for receiving a comparison value between the left backward current and the right backward current through the comparison unit, sampling at a predetermined interval, Reverse current detection device. 5. The return current measuring apparatus according to claim 4, wherein the user terminal determines that a problem has occurred in the line if the difference between the left back electromotive force and the right electromotive force is greater than 10%. [Claim 4] The backlight unit of claim 1, wherein the return current receiving board and the return current processing board are connected by a pin connection method through a motherboard, and the return current processing board and the user terminal are connected by a LAN communication method comprising one connection line One return current detection device. 7. The backlight current processing board according to claim 6, wherein the return current receiving board is provided with an LED indicating power connection, an LED indicating reception of left and right retrace currents, and an LED indicating communication connection with the return current processing board, An LED indicating a connection, an LED indicating a communication connection with the return current receiving board, and an LED indicating a communication connection with the user terminal.
KR1020150154783A 2015-11-04 2015-11-04 Measuring Apparatus for Return Current KR101628353B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150154783A KR101628353B1 (en) 2015-11-04 2015-11-04 Measuring Apparatus for Return Current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150154783A KR101628353B1 (en) 2015-11-04 2015-11-04 Measuring Apparatus for Return Current

Publications (1)

Publication Number Publication Date
KR101628353B1 true KR101628353B1 (en) 2016-06-08

Family

ID=56194062

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150154783A KR101628353B1 (en) 2015-11-04 2015-11-04 Measuring Apparatus for Return Current

Country Status (1)

Country Link
KR (1) KR101628353B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101801820B1 (en) * 2016-06-30 2017-11-29 한국철도기술연구원 Method for analyzing trackside environment of electric railway
KR101844468B1 (en) 2016-10-28 2018-05-18 성균관대학교 산학협력단 Apparatus and method for high speed fault distinction and fault location estimation using the database based on inductive analysis in high speed ac railway feeding system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090123406A (en) * 2008-05-28 2009-12-02 한국철도기술연구원 Detecting apparatus and the method of rail damage
JP2010239671A (en) * 2009-03-30 2010-10-21 Hitachi Ltd Device for drive and control of rolling stock
KR101031831B1 (en) * 2010-05-17 2011-05-02 현대로템 주식회사 Method for detection a position of a railway car
KR101356120B1 (en) 2013-02-07 2014-01-29 한국철도기술연구원 System and method for deciding suitability of the track circuit according to distribution return currents

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090123406A (en) * 2008-05-28 2009-12-02 한국철도기술연구원 Detecting apparatus and the method of rail damage
JP2010239671A (en) * 2009-03-30 2010-10-21 Hitachi Ltd Device for drive and control of rolling stock
KR101031831B1 (en) * 2010-05-17 2011-05-02 현대로템 주식회사 Method for detection a position of a railway car
KR101356120B1 (en) 2013-02-07 2014-01-29 한국철도기술연구원 System and method for deciding suitability of the track circuit according to distribution return currents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101801820B1 (en) * 2016-06-30 2017-11-29 한국철도기술연구원 Method for analyzing trackside environment of electric railway
KR101844468B1 (en) 2016-10-28 2018-05-18 성균관대학교 산학협력단 Apparatus and method for high speed fault distinction and fault location estimation using the database based on inductive analysis in high speed ac railway feeding system

Similar Documents

Publication Publication Date Title
CN108072806B (en) Track circuit fault diagnosis system and method
CN102594466B (en) Comprehensive detection system of high-speed railway balise
EP3708455A1 (en) Btm device and implementation method for multi-information fusion transmission between host and antenna unit
WO2008124902A3 (en) Presence of communication interlock method and apparatus for reducing or eliminating aircraft communications radio interference
CN210923925U (en) C interface cable fault detection device of LEU
KR101628353B1 (en) Measuring Apparatus for Return Current
CN102818968B (en) System and method for detecting transponder cable
EP3125444A1 (en) Optical communication device and optical communication method
CN104237704A (en) Device and method for detecting interior electromagnetic immunity
WO2008082607A3 (en) Method and apparatus for binding transceivers of telematic devices
CN110763955A (en) Cable fault detection system and method based on high-voltage pulse signal injection
EP2869475B1 (en) Transformer for power line communication
CN104237706A (en) Real-time monitoring method for power takeoff generation device
CN210894571U (en) High tension cable partial discharge detecting system
CN204270093U (en) A kind of temperature monitor
CN104698620A (en) Test system of LCD transmittance based on remote control of computer
CN105577476A (en) Remote automatic testing device and testing method of K line based on GPRS (General Packet Radio Service) communication
CN110570635A (en) automobile turning alarm detection table
CN202524381U (en) GSM wireless communication circuit
CN105450478A (en) GPRS communication based LIN bus automatic remote testing device and testing method
KR101903489B1 (en) Apparatus for confirming wiring status in train system
CN111740803A (en) Anti-interference device of rail transit electromagnetic communication system
CN105425131A (en) Safety early warning system and method for electric transmission line
CN105100705A (en) System and method for controlling automatic switch of multi-channel video signals
CN114236311A (en) Intelligent cable detection method and system

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20190603

Year of fee payment: 4