KR102086011B1 - Train access warning system - Google Patents

Abstract

The present invention relates to a train approach alarm system, and more particularly, to a train approach alarm system that can inform the operator of the access information of the train efficiently.
Train approach alarm system according to an embodiment of the present invention is disposed in the track work area, the approach detection unit for obtaining vibration data using a vibration sensor, and the characteristics of the train entry by analyzing the vibration data obtained by the access detection unit A server for calculating train access information by matching a pattern with previously stored data and an access alarm unit for outputting an alarm signal according to train access information calculated by the server, wherein the server matches the vibration data with previously stored learning data, and matches According to the result, the evacuation notification providing command signal is transmitted to the access alarm unit.

Description

Train approach warning system {TRAIN ACCESS WARNING SYSTEM}

The present invention relates to a train approach warning system, and more particularly, to a train approach alarm system that can effectively inform the access information of the train to the operator.

Railroads, by definition, refer to a facility that places steel tracks on a sleeper and drives a vehicle over it to transport passengers and cargo.

In this way, the railroad trains move along a predetermined track, and the work that is always exposed to the outside tracks are often performed to repair them.

In general, as a part of the safety of the worker at the work site for maintenance work on the track or signal equipment on the railroad side of the railway, by placing a safety personnel separate from the worker at a certain distance from the track side work area, Measures to prevent collisions with trains are being used.

The safety officer monitors whether the train is approaching the work area along the track, and alerts the operator of the train's approach when the train is recognized.

For example, the security personnel use the hand signals using flags to deliver the train's access information to the worker during the day, and in the night, the driver's access information is transmitted to the worker using the hand signals using the warning lights.

On the other hand, most of the workers are constantly performing a monotonous maintenance work.

Therefore, even if the worker receives the alarm signal of the train approach through the safety personnel located at a certain distance from the work area of the track side, a sensory block occurs and the alarm signal of the safety personnel by the flag or the warning light is recognized. Failure to do this occurs frequently.

As a result, even when the train approaches the maintenance work area, the worker does not recognize the approach of the train, causing accidents due to the collision with the train.

In addition, as described above, safety personnel are prevented by arranging safety personnel at the maintenance work site of the track or signal equipment on the railroad side of the railway, but the method of using manpower is responsible for the safety of the person. This can cause a very dangerous situation.

In particular, since the operator must continuously recognize the hand signal of safety personnel during maintenance work, the efficiency of maintenance work is lowered and a number of additional safety personnel must be arranged in addition to the worker, which leads to an increase in labor costs. have.

In addition, even if the safety alarm must constantly monitor the access of the train, there is a problem that can not provide information on the access to the train with reliability because it can not deliver the accurate access of the train due to sensory blockage phenomenon such as concentration deterioration.

The present invention is to solve the above problems, to provide a train access alarm system that can easily pass the access information of the train to the operator to prevent accidents caused by the operator does not recognize the approach of the train. There is a purpose.

The train approach alarm system according to the embodiment of the present invention is disposed in a track work area, and includes a proximity sensing unit for acquiring vibration data using a vibration sensor, and analyzing the vibration data acquired by the approach sensing unit to characterize train entry. A server that calculates train access information by matching the pattern with pre-stored data, and an access alarm unit that outputs an alarm signal according to train access information calculated by the server, wherein the server matches the vibration data with pre-stored learning data, and matches. According to the result, the evacuation notification providing command signal is transmitted to the access alarm unit.

According to the present invention, by placing a vibration sensor in the work area to detect the vibration according to the movement of the object (train), and extracts the characteristic pattern of the detected vibration data, to identify what moving object caused the detected vibration, and to move By identifying the speed of the object and distance information from the work area, alerting the worker within the work area of the approach of the moving object (train), without deploying means to detect the train directly outside the work area. In addition, it is possible to provide a train approach alarm according to the result of analyzing the vibration data detected in the work area.

1 is a view showing a train detecting means for obtaining reference data of the train approach alarm system according to an embodiment of the present invention.
2 is a schematic diagram showing a reference data acquisition state of a train approach warning system according to an embodiment of the present invention.
3 is a view showing a reference data acquisition configuration of the train approach warning system according to an embodiment of the present invention.
Figure 4 is a schematic diagram showing a state of use of the train approach warning system according to an embodiment of the present invention.
5 is a diagram illustrating a configuration of an access alarm unit according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, advantages and features of the present invention, and methods of achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and only the following embodiments are provided to those skilled in the art to which the present invention pertains. It is merely provided to easily show the configuration and effects, the scope of the invention is defined by the claims.

Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or devices in which the mentioned components, steps, operations and / or devices are known. Or does not exclude addition.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a train detection means for obtaining reference data of the train approach alarm system according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing a reference data acquisition state of the train approach warning system according to an embodiment of the present invention.

3 is a view showing a reference data acquisition configuration of the train approach warning system according to an embodiment of the present invention.

According to an embodiment of the present invention, in order to identify a train currently approaching and notify the worker of the work area about the evacuation notification of the approach, first, reference data for determining the type of train, the moving speed, and the distance to the work area are provided. Acquire.

Referring to FIG. 2, a train sensor 100 for obtaining reference data is disposed in a section in which a train outside the work area moves, and a vibration data obtainer 400 is disposed in the work area.

The vibration data acquisition unit 400 includes a first vibration sensor S1 and a second vibration sensor S2.

The sensed data acquired by the train detector 100 for obtaining reference data and the vibration data obtained by the vibration data acquirer are transmitted to the server 300, and are synchronized.

The server 300 is preferably a central control server disposed outside the work area, and it is also possible to be a mediation server disposed in the work area and transmitting the corresponding data to the central server as necessary.

The train detecting unit 100 for obtaining reference data is disposed at a predetermined distance (for example, 1Km, 1.5Km. 2Km, 3Km, 5Km, etc.) based on the work area, and detects a train entering along a track.

As illustrated in FIG. 1, the train detector 100 for obtaining reference data may include a first case 110, a detector 120, an imager 130, a detection determiner 140, and a data transmitter 150. ).

The first case 110 is a body formed in a cylindrical or rectangular shape, the receiving space is formed inside.

The first case 110 accommodates various parts for detecting the approach of the train in the receiving space and is arranged at a predetermined distance based on the work area of the work site for maintenance work on the track or signal equipment at the railroad side of the railway. do.

This is to ensure sufficient time for an operator to evacuate in the work area according to the distance between the work area and the train detection unit 100 for acquiring reference data, in relation to the type of train and its moving speed. to be.

The sensing unit 120 is accommodated in the accommodation space of the first case 110 while a part thereof is exposed to the outside from the first case 110.

In addition, the detector 120 detects a train in which an area exposed to the outside from the first case 110 enters along the track.

In more detail, the detector 120 includes a first sensor 121 and a second sensor 122.

The first sensor 121 is disposed in the direction in which the train enters in the first case 110 and toward the line side.

The second sensor 122 is disposed in a direction facing the line side at an adjacent position of the first sensor 121.

Therefore, when the train enters from the direction in which the train enters, the detection unit 120 firstly detects whether the first sensor 121 enters the second sensor 122 and then detects whether the train enters the train. do.

The detection information detected by the detection unit 120 is determined by the detection determination unit 140 whether the train entrance warning signal.

The image unit 130 is accommodated in the accommodation space of the first case 110 while a part thereof is exposed to the outside from the first case 110.

The image unit 130 generates image information by photographing a train entering along a track.

The image information taken by the image unit 130 is used by the detection determination unit 140 to determine whether the train is an entrance signal.

The detection determination unit 140 is stored in the first case 110, and compares predetermined information with information detected by the detection unit 120 to determine whether the detection information of the detection unit 120 is a train entrance warning signal. To judge.

That is, the sensor 120 detects the time taken from the time detected by the first sensor 121 to the time detected by the second sensor 122, and compares the information set in the detection determiner 140 with the sensor 120. It is determined whether the received information is a train entry warning signal.

The first sensor 121 and the second sensor 122, based on the time information detected by the train entering alarm signal is determined, for example, the detection determination unit 140, the first sensor 121 is not confirmed at the track side. After detecting the object, the time elapsed until the second sensor 122 detects the object is not included in the range of the preset value, or the unidentified object is detected only in the first sensor 121 or the second sensor 122. In this case, it is determined that the detection information detected by the detection unit 120 is not due to entering the train.

On the other hand, the detection determining unit 140 detects an unidentified object on the side of the track by the first sensor 121, and the elapsed time until the second sensor 122 detects the preset value in the detection determining unit 140. When included in the range of the value, it is determined that the detection information detected by the detection unit 120 is a train entrance warning signal.

According to the above example, when the interval between the time information detected by the first sensor and the second sensor, that is, the difference in the detection time is included in the range of the preset value, it is described that the detection information is determined as entering the train, This may be determined by entering the train when the difference in the detection time is included within the preset range in consideration of train operation information such as weather, railway construction, and operation delay time.

For example, the train may temporarily travel at a low speed due to an abnormal train track, and the server 300 stores train operation information on the train, thereby preventing an error on whether to enter a train.

The detection determining unit 140 may analyze the image information photographed by the imaging unit 130 and determine whether the image information photographed by the imaging unit 130 is sensing information by train entry.

Meanwhile, the approach detector 100 may use only one of the detector 120 or the image unit 130, or may use both the detector 120 and the image unit 130.

By using both the detector 120 and the image unit 130, the reliability of the train entry warning signal may be further increased.

The data transmission unit 150 is disposed on the inner or outer surface of the first case 110, and if it is determined that the information detected by the detection unit 120 from the detection determination unit 140 is information by train entry, The sensing information is transmitted to the server 300.

The data transmission unit 150 may be made of any one of a wired transmission module and a wireless transmission module.

The server 300 synchronizes and stores the detection signal of the reference data acquisition train detector 100 acquired through the data transmission unit 150 and the vibration data acquired by the vibration data acquisition unit 400 at a corresponding time point. By doing so, it is possible to obtain vibration data when the train passes a predetermined distance away from the work area.

The server 300 generates a reference data pattern in which data acquired in the field is accumulated through the vibration data acquisition unit 400.

The technical problem to be solved by the present invention is to secure a sufficient time required for evacuation to the worker in the work zone, so that the time from the alarm notification to the evacuation time is set as an example will be described.

For example, if the distance between the train and the work zone is 1km, the traveling speed of the moving train is 60km / h, and the distance between the train and the working zone is 1.5km, and the traveling speed of the moving train is 90km / h, If the distance to the work zone is 2km and the traveling speed of the moving train is 120Km / h, if the distance between the train and the working zone is 3km and the traveling speed of the moving train is 180Km / h, When the distance is 5 km and the traveling speed of the moving train is 300 km / h, a data sheet for the characteristic pattern obtained for each situation is obtained, and the data sheet is stored in the server 300 or in a separate database.

At this time, in order to acquire a data sheet and detect a train approach at an actual site, vibration data is acquired by disposing a first vibration sensor S1 and a second vibration sensor S2 spaced apart from a predetermined distance (for example, 10 meters). This is as described above.

The data sheet includes frequency data, amplitude data, phase data, and distortion data of a waveform as shown in Table 1 below.

Between train and workshop
Street Moving train
Running speed frequency amplitude Phase Distortion Rate of Waveforms 1km 60Km / h 1.5Km 90Km / h 2km 120Km / h 3km 180Km / h 5km 300Km / h

The present invention is not only binary analysis of the approach detection of the train by simply integrating the vibration data, but also generates the characteristic pattern of the vibration data and utilizes the train type, moving speed, distance to the work area and safe evacuation. It is possible to calculate the evacuation reminder alarm time for.

Figure 4 is a schematic diagram showing a state of use of the train approach warning system according to an embodiment of the present invention.

The vibration data acquisition unit 400 according to the present embodiment includes a vibration sensor, and when a train approaches a work area, detects a vibration due to the movement of the train and transmits the vibration to the AP through an transceiver module. Through the transmission to the server 300, the server 300 analyzes the vibration data, and transmits a command for providing a forecast or alarm for the train approach to the worker in operation to the approach alarm unit 200.

4 illustrates an example in which the server 300 is located outside the work area, but it is only illustrated to help those skilled in the art. The vibration data acquisition unit 400, the transmission / reception module, It is possible that the access alert 200 is included in the terminal.

In addition, the access alarm unit 200 is disposed in the work area as a separate module or configured in one access terminal and one terminal is not limited to the configuration of outputting a warning sound or a warning phrase, the smartphone carried by the operator, etc. It is also possible to apply the configuration to inform the notification of evacuation and evacuation alerts.

The vibration sensor included in the vibration data acquisition unit 400 may be directly attached to the train rail or disposed adjacent to the rail and fixed.

As described above, the vibration data acquisition unit 400 and the approach alarm unit 200 may be disposed separately as different configurations as shown in FIG. 4, but are included in a single terminal as another example, and detect the train approach and the corresponding. It is possible to provide an alarm using the access detection information to the worker in the work area, and the access alarm unit 200 may also provide an access alarm using a worker terminal such as a smartphone possessed by the worker.

The server 300 according to an embodiment of the present invention utilizes a data pattern analysis result obtained by accumulating data acquired in the field through a vibration sensor, as shown in Table 1 above.

The data sheet acquired through the vibration data acquisition unit 400 in the field is stored in the server 300 or a separate database.

For the vibration waveform acquired in the field, a fundamental waveform is obtained by using a Fourier series, and a characteristic pattern such as frequency, amplitude, phase, etc. of the basic waveform and the above-described distortion data are obtained.

The Fourier transform is the decomposition of the function of time into the frequency components that make up the function.

When the function of time is Fourier transformed, it becomes a complex function of frequencies, the absolute value of which represents the amount of frequency components constituting the original function, and the declination represents the phase offset from the basic sinusoid.

According to an exemplary embodiment of the present invention, the first and second vibration sensors S1 and S2 are disposed in the work area to detect vibration due to the movement of the object (train), and the server 300 may detect the vibration data. The pattern is extracted and matched with the data of the pre-stored data sheet to search for matching pattern characteristics.

The oscillation frequency is acquired over time, and Fourier transform is performed to obtain the fundamental frequency, and the amplitude, frequency, phase difference, and distortion rate of the waveform are obtained.

When the medium is constant, the same waveform will be obtained, but distortion of the waveform will occur depending on the spacing of the rails.

For example, in the present invention, train access information is obtained by matching a characteristic pattern of a vibration frequency in consideration of a distortion ratio of a waveform.

When the equation of the vibration waveform with respect to time is expressed by the Fourier series, it is expressed by Equation 1 below.

At this time, A is an effective value for amplitude.

The distortion rate D of the waveform is calculated as in Equation 2 below.

According to the matching pattern characteristic, it is possible to identify what moving object caused the sensed vibration, identify the speed and position information of the moving object, and provide an alert to the worker about the approach of the moving object (train). Do.

Server 300 according to an embodiment of the present invention receives information on the type of work through the manager terminal or worker terminal.

In other words, if a diagnosis using large structures is being performed on the site, the evacuation time needs to be informed 1 minute before the train approach. If the operator is performing a simple diagnosis, the time for evacuation is required. Suppose you want to tell us seconds ago.

The server 300 differently compares the reference data stored in the DB with the vibration data obtained through the vibration data acquisition unit 400 according to the input job type.

That is, the corresponding reference data according to the operation type is called, and compared with the characteristic pattern of the currently acquired vibration data, the alarm providing command signal to notify the train approach alarm for a predetermined evacuation notification time, the approach alarm unit 200 To send).

As described above, the access alarm unit 200 is not limited to the configuration of outputting a warning sound or a warning phrase is arranged in the work area as a separate module or configured in the vibration data acquisition unit 400 and one terminal, It is also possible to be applied to the configuration to notify the notification of evacuation and evacuation alarm by using your smart phone.

For better understanding by those skilled in the art, the configuration of the case where the device is arranged as a separate device of the access alarm unit 200 will be described below with reference to FIG. 5.

5 is a diagram illustrating a configuration of an access alarm unit according to an embodiment of the present invention.

Approach alarm unit 200 is installed in the track work area of the worker for maintenance work on the track or signal equipment on the track side of the railway, receives the train entry alarm signal received from the server 300 to warn the outside Output in the form of a notification.

The approach alarm unit 200 includes a second case 210, a receiver 220, an alarm signal output unit 230, and a signal controller 240.

The second case 210 is a body formed in a cylindrical or quadrangular shape, and an accommodation space is formed therein.

The second case 210 is arranged in the work area to accommodate the various parts for the alarm approach of the train in the receiving space.

The receiver 220 is disposed on the inner or outer surface of the second case 210 and receives a train entrance warning signal transmitted from the server 300.

On the other hand, the receiver 220 may be made of any one of a wired transmission module or a wireless transmission module.

The alarm signal output unit 230 outputs warning information so that an operator of the track side work area can recognize when a train entrance warning signal is received through the receiver 220.

The alarm signal output unit 230 includes a speaker 231 and a warning light 232.

When the speaker 231 receives the train entrance warning signal from the receiver 220, a warning sound is output through the speaker 231 under the control of the signal controller 240 controlling the alarm signal output unit 230.

In addition, when the warning light 232 receives the train entrance warning signal from the receiver 220, the light flashes under the control of the signal controller 240.

Therefore, due to the speaker 231 for outputting the warning sound and the warning light 232 for which the light is extinguished, the operator of the work area can recognize this and recognize that the train is approaching and quickly cope with it.

Meanwhile, the alarm signal output unit 230 may use only one of the speaker 231 and the beacon 232, or may use both the speaker 231 and the beacon 232.

By using both the speaker 231 and the beacon 232, the operator of the work area can more clearly confirm this and more clearly recognize that the train is approaching.

In addition, when the server 300 is in an external area, such as a curved section or a mountainous region, or when an obstacle such as a mountain exists, a train entry warning signal may not be properly transmitted from the server 300.

In order to prevent this, in the embodiment of the present invention, a repeater is installed between the server 300 and the access alarm unit 200.

The repeater is disposed between the server 300 and the approach alarm unit 200 retransmits the train entry warning signal to the access alarm unit 200.

The repeater includes a third case, an alarm signal receiver and an alarm signal transmitter.

The third case is a body formed in a cylindrical or quadrangular shape, the receiving space is formed therein.

The third case accommodates various components for approach detection and approach alarm of the train in the accommodation space.

The alarm signal receiving unit is disposed on the inner or outer surface of the third case and receives a train entrance warning signal transmitted from the server 300.

On the other hand, the alarm signal receiving unit may be made of any one of a wired transmission module or a wireless transmission module.

The alarm signal transmitter is disposed on the inner or outer surface of the third case, and an alarm signal is installed at a remote track work area to indicate that the train is approaching the work area. It transmits to the approach alarm part 200.

In addition, when there is an obstacle such as a mountain, such as a curved section or a mountainous region, a repeater is installed in the soft point area of the obstacle.

As a result, the transmitted train entrance warning signal signal may be easily transmitted to the approach alarm unit 200 through the repeater to avoid obstacles.

So far looked at the center of the embodiments of the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

100: train detection unit for obtaining reference data 110: the first case
120: detector 121: first sensor
122: second sensor 130: image portion
140: detection determination unit 150: data transmission unit
200: access alarm unit 210: second case
220: first alarm signal receiving unit 230: alarm signal output unit
231: speaker 232: warning lights
240: signal controller 300: server
400: vibration data acquisition unit

Claims (5)

An access detector disposed in the track work area to obtain vibration data using a vibration sensor;
A server configured to analyze the vibration data obtained by the approach detecting unit and calculate train access information by matching a characteristic pattern for entering a train with previously stored data; And
It includes an access alarm unit for outputting an alarm signal according to the train access information calculated by the server,
The server matches the vibration data with pre-stored learning data, and transmits an evacuation notification command signal to the approach alarm unit according to a matching result, and analyzes the vibration data to determine the frequency, amplitude, phase, and distance from the rail. Acquire data on the distortion rate of the waveform and match it with previously stored learning data to obtain distance information between the work area and the train and movement speed information of the train, and utilize the distance information and the movement speed information. Send train access information to the access alarm,
The server obtains a characteristic pattern by calculating the distortion rate of the waveform using Equation 1 and Equation 2, and transmits the train access information by matching it with previously stored learning data.
[Equation 1]

[Equation 2]

Here, Equation 1 is a formula representing the equation of the vibration waveform with respect to time as a Fourier series, A is the effective value for the amplitude, D is the distortion of the waveform,
The approach detecting unit detects when the interval of the time information detected by the first sensor disposed toward the line side in the direction in which the train enters and the second sensor arranged in the direction facing the line side is within a range of a preset value. Determining the information by the train entry, if the difference in the detection time within the range of the predetermined value in consideration of the train operation information including weather, railway construction, operation delay time to determine that the train entry
Train approach alarm system.
delete The method of claim 1,
The server adjusts time information for evacuation notification according to the type of work inputted, calls previously stored reference data in consideration of time information for evacuation notification, and compares and analyzes the train access information with vibration data currently obtained. To transmit
Train approach alarm system.
delete The method of claim 1,
The approach alarm unit receives the train access information to provide a train approach alert including the time remaining until safe evacuation
Train approach alarm system.

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