KR102265726B1 - System for remotely alerting a approach of a working railway vehicle for the safety of worker - Google Patents

Abstract

The present invention relates to a railroad vehicle approach remote alarm system that provides access information of a train (railway vehicle) to an operator for the safety of workers (line crew, etc.) working in a trackside work area, and more particularly, to a thermal imaging camera It analyzes the movement information of the approaching train from a distance using the accelerometer (vibration sensor) and warns it through a warning light (alarm) and mobile communication terminal (cell phone, PDA, etc.) It relates to a remote alarm system for approaching railroad vehicles for work for worker safety management that has improved worker safety by overcoming the limitation of information transmission of signal numbers due to such reasons.

Description

SYSTEM FOR REMOTELY ALERTING A APPROACH OF A WORKING RAILWAY VEHICLE FOR THE SAFETY OF WORKER

The present invention relates to a railroad vehicle approach remote alarm system that provides access information of a train (railway vehicle) to an operator for the safety of workers (line crew, etc.) working in a trackside work area, and more particularly, to a thermal imaging camera It analyzes the movement information of the approaching train from a distance using the accelerometer (vibration sensor) and warns it through a warning light (alarm) and mobile communication terminal (cell phone, PDA, etc.) It relates to a remote alarm system for approaching railroad vehicles for work for worker safety management that has improved worker safety by overcoming the limitation of information transmission of signal numbers due to such reasons.

In general, a railway is a facility that installs a forced track on a sleeper to allow a train loaded with people or cargo to operate on it. As a railroad vehicle frequently moves along a set track, maintenance work on the track or signal facility is required. is done frequently.

Railroad maintenance work is to repair tracks or signal equipment on the side of the track. For the safety of the workers (shipmen), safety personnel separate from the workers are placed at a certain distance from the trackside work area for the safety of the workers. This prevents collisions with trains.

In the safety hand signal method using safety personnel, the safety personnel directly monitor whether the train approaches the working area on the side of the track, and when the approach of the train is recognized, a warning notification of the train approach is provided to the operator. For example, during the daytime, safety personnel use hand signals using flags to deliver train approach information to workers. And, at night, the train's approach information is delivered to the operator using a hand signal using a warning light.

However, as most workers perform relatively monotonous maintenance work continuously for a long time, even if they receive an alarm signal for train approach through a safety officer located at a certain distance based on the work area on the side of the track, the flag due to the sensory deprivation phenomenon Alternatively, there was a problem in that the alarm signal of the safety personnel was not recognized by the warning light.

For this reason, the operator does not recognize the approach of the train even when the train approaches the vicinity of the maintenance work area, and thus, fatal accidents due to collision with the train occur frequently. In addition, the train approach warning method using safety personnel entrusts safety entirely to people, which can lead to very dangerous situations due to mistakes or negligence.

In particular, since the operator must continuously recognize the hand signals of safety personnel during maintenance work, the efficiency of maintenance work is also reduced, and since a number of additional safety personnel must be deployed in addition to the workers, there is a problem that increases the labor cost. have.

Because safety personnel have to continuously monitor the approach of the train for a long time, like the workers, sensory blockage due to reduced concentration occurred, making it difficult to accurately monitor the approach of the train. Due to this, there was a problem in that it was not possible to prevent a collision accident in advance because the train approaching the maintenance work site could not be detected.

KR 10-0975286 B1, 2010. 08. 05., "Railway side maintainer safety alarm system and method" KR 10-2012-0057683 A, 2012. 06. 07., "Train approach warning system and method" KR 10-2018-0090745 A, 2018.08.13., "Train approach warning system"

Accordingly, the present invention has been proposed to solve the problems of the prior art, and has the following objects.

First, the present invention is a worker who can prevent human accidents in advance by quickly recognizing that a train is entering even if a sensory block phenomenon occurs due to continuous simple work by workers who maintain tracks or signal facilities at the track side of the railway An object of the present invention is to provide a remote alarm system for approaching railway vehicles for safety management.

Second, the present invention maintains by not disposing a separate safety agent to ensure the safety of workers who maintain tracks or signal facilities at the trackside of the railway, or by making it possible to recognize the entry of the train stably even if the number is minimized. Another object of the present invention is to provide a railway vehicle access remote alarm system for worker safety management that can reduce maintenance costs by blocking the increase in labor costs due to the arrangement of safety personnel during maintenance.

According to one aspect of the present invention for achieving the above object, there is provided a warning light and an alarm installed in the periphery of a track-side work area; a mobile communication terminal possessed by a worker who works in the trackside work area; a train approach sensing unit installed at the front or rear of the trackside work area to detect the approach of the train; And installed in the periphery of the trackside work area, control the warning lights and alarms based on the train approach information detected by the train approach detection unit to provide a warning light and an alarm sound, and access information of the train to the mobile communication terminal It provides a railway vehicle approach remote alarm system for work for worker safety management, characterized in that it comprises a train approach notification unit that provides a.

Preferably, the train approach detection unit includes a vibration sensor installed on the track to detect vibration generated by the train passing through the track; a thermal imaging camera installed for each section divided at regular intervals on the side of the track and operated when vibration is sensed by the vibration sensor to photograph a train passing through the track; and an accelerometer that measures the acceleration of a train passing through a corresponding section based on the change in vibration of the vibration sensor and transmits it to the train approach analysis unit.

Preferably, the train approach notification unit provides train access information to the mobile communication terminal through the forced push notification function, and the mobile communication terminal operates through the forced push notification function to operate the train transmitted from the train approach notification unit. While outputting an alarm sound in response to the notification signal, it may be characterized in that the train approach information transmitted from the train approach notification unit is displayed on a display window.

Preferably, the mobile communication terminal may generate an alarm by automatically operating an alarm function provided at each specific time corresponding to the time when the train arrives at the trackside work area.

Preferably, it is installed in the work area on the side of the track, and in response to the notification signal transmitted from the train approach notification unit, the train image captured by the thermal imaging camera is output with an alarm sound in the direction of the worker working as a holographic image. It may be characterized in that it further comprises a hologram device.

As described above, according to the present invention, the following effects can be obtained.

First, the present invention analyzes the movement information of a train approaching from a distance using a thermal imaging camera and an accelerometer (vibration sensor) and warns it through a warning light (alarm) and a mobile communication terminal (mobile phone, PDA, etc.) in advance. It is possible to improve the safety of workers by overcoming the limitations of information transmission of signal numbers due to noise or concentration of workers at the work site.

Second, the present invention provides a holographic image corresponding to the train actually approaching to the worker working in the trackside work area when the train approaches, thereby instilling an optical illusion as if a train is running in the worker to double the awareness and prevent a safety accident. may be

1 is a conceptual diagram illustrating a railway vehicle remote alarm system for work according to an embodiment of the present invention.
2 is a diagram schematically illustrating a state in which a thermal imaging camera according to the present invention is installed on a track side.
3 is a view showing an example of train movement information displayed on a mobile communication terminal according to the present invention.
4 is a diagram schematically illustrating a railway vehicle remote alarm system for work according to another embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

In the present specification, the present embodiment is provided so that the disclosure of the present invention is complete, and to fully inform those of ordinary skill in the art to which the present invention pertains to the scope of the present invention. And the invention is only defined by the scope of the claims. Accordingly, in some embodiments, well-known components, well-known operations, and well-known techniques have not been specifically described to avoid obscuring the present invention.

Also, like reference numerals refer to like elements throughout the specification. In addition, the terms used (mentioned) in this specification are for the purpose of describing the embodiments and are not intended to limit the present invention. As used herein, the singular also includes the plural unless specifically stated otherwise in the phrase. In addition, elements and operations referred to as 'include (or include)' do not exclude the presence or addition of one or more other elements and operations.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. Also, terms defined in commonly used dictionary are not to be interpreted ideally or excessively unless defined.

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

1 is a conceptual diagram illustrating a railway vehicle remote alarm system for work according to an embodiment of the present invention.

Referring to FIG. 1 , a remote alarm system for a railway vehicle for work according to an embodiment of the present invention (1) is a sensory block phenomenon caused by a simple operation of a worker performing maintenance work on a track or a signal facility on the track side of a railroad. It is a safety facility system to prevent human accidents due to train collision accidents that occur due to not recognizing the approach of the train (2).

The railway vehicle remote alarm system 1 for work according to the embodiment of the present invention includes a train approach detection unit 10 for detecting the approach of the train 2 approaching the trackside work area.

The train approach detection unit 10 includes a thermal imaging camera 11 , a vibration sensor 12 and an accelerometer 13 to detect the approach of the train 2 . In addition, it may further include an acoustic sensor (not shown).

The thermal imaging camera 11 captures an image in white or black depending on the presence of heat. For example, a person or an animal that generates heat is photographed in white, and a train or track that does not generate heat is photographed in black, so that an object generating heat can be distinguished.

2 is a diagram schematically illustrating a state in which a thermal imaging camera according to the present invention is installed on a track side.

As shown in FIG. 2 , a plurality of thermal imaging cameras 11 are installed for each section divided at regular distance intervals along the track 3 to photograph the train 2 running on the track 3 .

In order to control the thermal imaging camera 11 , a thermal imaging camera management unit (not shown) may be operated.

The thermal imaging camera management unit remotely controls the imaging angle of the thermal imaging camera 11 or the sensitivity (threshold value) of the image to be shot. For example, the sensitivity of the image may be adjusted to stably photograph the train 2 . Through this, it is possible to adjust the density of the image photographed by the object generating heat so that the object with weak heat is photographed in black.

Meanwhile, the thermal imaging camera 11 may be configured to photograph the train 2 passing the track 3 by operating only when vibration is sensed by the vibration sensor 12 to minimize power consumption.

In addition, a separate solar panel and a storage battery may be provided to operate by receiving power from them.

As shown in FIG. 1 , the vibration sensor 12 is installed on the track 3 to sense vibration generated by the train 2 passing through the track 3 in real time and transmits it to the accelerometer 13 . Of course, a vibration accelerometer in which the vibration sensor 12 and the accelerometer 13 are combined may be installed on the track 3 .

As shown in FIG. 1 , the vibration sensor 12 is installed one by one for each section partitioned at regular distance intervals, like the thermal imaging camera 11 . For example, it is installed in a section where the thermal imaging camera 11 is not installed to detect the approach of the train 2 in a double sensing method. Of course, it may be installed in a section where the thermal imaging camera 11 is installed for easy management.

The accelerometer 13 measures the acceleration of the train 2 passing through the corresponding section of the track 3 based on the vibration change of the vibration sensor 12 and transmits the measured value to the train approach analysis unit 20 .

As shown in FIG. 1 , the train approach analyzer 20 analyzes whether the train 2 approaches based on data transmitted from the thermal imaging camera 11 and the accelerometer 13 of the train approach detector 10 .

The train approach analysis unit 20 analyzes the movement information of the current train 2 based on the data measured from each thermal imaging camera 11 and/or the accelerometer 13, and then analyzes the movement information of the train 2 Based on the notification step, the notification step is divided into 'caution', 'warning' and 'danger' steps and a corresponding signal is transmitted to the receiver 40 installed in the work area along the track through the transmitter 30 .

For example, the 'attention' step corresponds to a case where the arrival time to the trackside work area exceeds 30 minutes because the distance between the location of the currently running train 2 and the trackside work area exceeds 30 minutes, and the 'warning' step corresponds to the case where the arrival time is 20 to 30 minutes because the distance between the currently running train (2) and the trackside work area is long, and the 'danger' stage indicates that the distance between the currently running train (2) and the trackside work area is It may correspond to a case where the arrival time is less than 20 minutes because it is far away.

Of course, each step (caution/warning/danger) set by the train approach analysis unit 20 may be set by appropriately considering the range of arrival time according to the surrounding environment of the railroad track or the difficulty of work.

On the other hand, the train approach analysis unit 20 stores the image captured by the thermal imaging camera 11 in the image DB, compares and analyzes the image, and when the size of the white photographed as a heated object is greater than or equal to a preset size, the train ( 2) is perceived as approaching. At this time, if there is a white part, which is a heat sensing part, in the photographed image, the average pixel difference between the white part and the black part, which is a non-heat sensing part adjacent to the white part, is obtained, and only when the difference is greater than a preset value, the train (2) ) is perceived as approaching. For example, in the case of a person at the same distance, considering that the photographed white area occupies 2000 pixels or more, when about 3000 pixels or more are detected, it can be recognized that the train 2 is approaching.

The transmitter 30 performs data communication with the receiver 40 as wired or wireless communication. The transmitter 30 and the receiver 40 may be interconnected through a communication network, and in this case, the communication network is CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), LTE (Long Term Evolution), LTE-A (LTE Advanced), Wibro/Wimax, WiFi, 3G (or, 4G, 5G), including a known network capable of data communication can be used.

As shown in FIG. 1 , the train approach notification unit 50 receives a signal transmitted from the train approach analyzer 20 via the transmitter 30 and the receiver 40 and controls the operation of the warning light and the alarm 61 . .

The train approach notification unit 50 controls the warning light and the alarm 61 in response to the signal transmitted by the train approach analysis unit 20 . At this time, the warning light and the alarm 61 are controlled to correspond to the notification stage (caution/warning/danger) divided into three stages by the train approach analysis unit 20 .

For example, a 'caution' level may emit green light, a 'alert' level may emit an orange light, and a 'danger' level may emit a red light. Of course, the same red light may be emitted regardless of each stage. In addition, an alarm sound may be generated together through an alarm in each step. Preferably, the volume may be increased in each step. In this case, the warning sound may output the same sound as the horn of the train to double the alertness of the operator.

The train approach notification unit 50 provides train access information, that is, train movement information, to the operator's mobile communication terminal 62 or personal digital assistants (PDA) distributed to the operator. At this time, the train approach notification unit 50 provides train proximity information (movement information) to the mobile communication terminal 62 or personal information terminal through the forced push notification function.

3 is a diagram illustrating an example of train movement information displayed on a mobile communication terminal according to the present invention.

Referring to FIG. 3 , a 'safety app (train approach notification app)' is separately installed in the mobile communication terminal 62 , and data is provided through short-range wireless communication with the train approach notification unit 50 .

The mobile communication terminal 62 automatically executes the pre-installed 'safety app' in response to the train approach notification signal transmitted from the train approach notification unit 50 . That is, when a signal is received from the train approach notification unit 50 through the forced push notification function, the 'safety app' is automatically executed to generate an alarm sound, and information about the railroad route and the current train (2) is displayed on the screen window. displayed in real time.

3, the screen of the mobile communication terminal 62 displays, for example, the vehicle number, vehicle speed, and vehicle distance (distance between the current train position and the trackside work area A) of the train. In addition, the arrival time from the current position of the train 2 to the trackside work area A is displayed.

The mobile communication terminal 62 may automatically operate an alarm function provided in the mobile communication terminal 62 at specific times corresponding to the arrival time of the train 2 to generate an alarm sound.

For example, when the arrival time of the train 2 remains less than 20 minutes, which is a 'dangerous' stage, the mobile communication terminal 62 automatically sets an alarm so that an alarm sounds every 5 minutes, and when 5 minutes have elapsed It automatically generates an alarm every time, and if the alarm is not turned off, the alarm continues to sound, improving concentration on train approach and preventing safety accidents in advance.

Of course, the mobile communication terminal 62 may receive the video image of the train 2 photographed through the thermal imaging camera 11 as well as the movement status of the train 2 and display it on the display window together.

4 is a diagram schematically illustrating a railway vehicle remote alarm system for work according to another embodiment of the present invention.

As shown in FIG. 4 , the remote alarm system for a railway vehicle for work according to another embodiment of the present invention has the same configuration as the remote alarm system for a railway vehicle for work illustrated in FIG. 1 .

In addition, the railway vehicle remote alarm system for work according to another embodiment of the present invention is transmitted from the train approach notification unit 50 in order to give a sense of reality to the worker working in the trackside work area to be recognized as if an actual train is approaching. It further includes a hologram device 70 for outputting the hologram image 71 in the direction of the operator in response to the notification signal.

The hologram device 70 outputs a holographic image 71 corresponding to the train 2 as a stereoscopic picture of a three-dimensional image. At this time, the hologram device 70 outputs the hologram image 71 at the same time as the alarm sound of the alarm in order to double the effect, and instills an optical illusion as if a train is running in the operator, thereby multiplying the awareness and preventing a safety accident. .

Meanwhile, the image captured by the hologram device 70 may be a train image captured by the thermal imaging camera 11 .

In this way, the railway vehicle remote alarm system for work according to the present invention detects the approach of the train 2, analyzes the approach information, that is, the movement information of the train 2 based on this, and a train approach notification unit installed in the trackside work area. Through the warning light and alarm 61 and the mobile communication terminal 62, it is provided to the worker to overcome the limitation of information transmission due to the number of signals of the existing safety personnel due to noise or concentration of workers at the trackside work site. .

As described above, the technical idea of the present invention has been specifically described in the preferred embodiment, but the preferred embodiment is for the purpose of explanation and not for limitation. As such, those of ordinary skill in the art will be able to understand that various embodiments are possible through combination of embodiments of the present invention within the scope of the technical spirit of the present invention.

1: Mobile smart warning light traffic cone 2: Vehicle
3: communication network 10: main body
11: support part 12: pillar part
20, 120, 220: Post 21: Thread
30: smart warning light 31: housing
31a: coupling part 32: lighting panel
32a: fixing plate 32b: LED lamp
33: solar panel 33a: mounting plate
33b: solar cell 34: power storage unit
34a: support plate 34b: storage battery
35: control module 36: transparent cover
37: waterproof ring 122: tube
221: vertical bar 222: wing piece
222a: hinge member

Claims (5)

warning lights and alarms 61 installed around the trackside work area;
a mobile communication terminal (62) carried by a worker who works in the trackside work area;
A vibration sensor 12 is installed in the front or rear of the trackside work area to detect the approach of the train and is provided on the track to detect vibrations generated by the train passing through the track, and a predetermined interval is provided on the trackside. A thermal imaging camera 11 is installed for each section divided by , and operates only when vibration is sensed by the vibration sensor 12 to photograph a train passing through the track, and the vibration sensor 12 a train approach sensing unit 10 provided with an accelerometer 13 that measures the acceleration of a train passing through a corresponding section based on the vibration change and transmits it to the train approach analysis unit 20;
It is installed in the periphery of the trackside work area, controls the warning lights and alarms based on the train approach information detected by the train approach detection unit 10 to provide warning lights and alarm sounds, and the mobile communication terminal 62 A train approach notification unit 50 that provides access information of the train; includes, but
The train approach analysis unit 20
After analyzing the approach of the train 2 based on the data transmitted from the thermal imaging camera 11 and the accelerometer 13 of the train approach detection unit 10, the notification step based on the movement information of the train 2 is 'attention'','Warning' and 'Danger' stages are divided and the corresponding signal is transmitted to the receiving unit 40 installed in the trackside work area through the transmitting unit 30,
The train approach notification unit 50
The train access information is provided to the mobile communication terminal 62 through the forced push notification function, and the mobile communication terminal 62 operates through the forced push notification function as a medium to transmit the information transmitted from the train approach notification unit 50. A warning sound is output in response to the train notification signal, the train approach information transmitted from the train approach notification unit 50 is displayed on the display window, and a warning light and an alarm in response to the signal transmitted by the train approach analysis unit 20 . (61), receives a signal transmitted from the train approach analysis unit 20 via the transmission unit 30 and the reception unit 40 to control the operation of the warning light and the alarm 61,
The mobile communication terminal 62 automatically operates an alarm function provided at specific times corresponding to the time when the train arrives at the trackside work area to generate an alarm sound, but the When a signal is received from the train approach notification unit 50 through the forced push notification function in response to the train approach notification signal, the safety app is automatically executed to generate an alarm sound, and the railway route and current train 2 are displayed on the screen window. A remote alarm system for approaching railway vehicles for work for worker safety management, characterized in that the information is displayed in real time.
delete delete delete The method of claim 1,
The direction of the worker who is installed in the trackside work area and is working with the holographic image 71 on the train image taken through the thermal imaging camera 11 in response to the notification signal transmitted from the train approach notification unit 50 Railroad vehicle approach remote alarm system for work for worker safety management, characterized in that it further comprises a hologram device 70 for outputting with an alarm sound.

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