KR100750679B1 - System for detection and alarm of a train approach - Google Patents

Abstract

The present invention tracks the location of the railway maintenance personnel (workers) and trains in real time to provide information to the maintenance staff and the engineer of the train so that the train automatically alarms when the train approaches a certain distance so that the staff can safely prepare for the train. The present invention relates to an approach detection and warning system, and the present invention receives satellite coordinates transmitted from a satellite that outputs GPS data, determines and displays the current train location, and transmits the train location information and driving information through a CDMA network. And a terminal for a train mounted on a train that receives the station information of the crossing and the station through the CDMA network, and compares the position information of the station staff with the location information of the train and performs an alarm when approaching a certain distance; Receives satellite coordinates sent from satellites to determine their current location, transmits their location information through the CDMA network, and compares their location information with the train location information received through the CDMA network, A portable train approach alarm device carried by a worker performing an alarm when approaching a location; It is connected to a web server and local history control system through the internet network to perform overall railway-related control, displaying the current position of trains and the working position of the crew, and displaying alarms when the train and crew are close to a certain distance. It is equipped with the railway integrated command room system.

Description

System for detection and alarm of a train approach

1 is a block diagram showing the configuration of a train approach detection and warning system according to the present invention.

Figure 2 is a block diagram showing the configuration of a portable train approach alarm apparatus carried by a worker (a crew) of the train approach detection and alarm system according to the present invention.

Figure 3 is a block diagram showing the configuration of a terminal for a train mounted on the train of the train approach detection and alarm system according to the present invention.

4 is an operation flowchart of a train approach detection and warning system according to the present invention;

Explanation of symbols for the main parts of the drawings

100: train terminal 200: CDMA network

300: portable train access warning device 400: railway integrated command room system

600: Internet network 720: message switch

730: location management server 750: web server

The present invention relates to a train approach detection and alarm system, and more specifically, to track the location of the railway maintenance personnel (workers) and the train in real time to provide information to the maintenance staff and the train driver of the train when the train approaches a certain distance The present invention relates to a train approach detection and alarm system that automatically alerts the passengers so that crews can safely prepare.

In addition, train driver of the train helps to ensure safe operation of the train by informing the location of the staff, and the central center (Railway Integrated Command Room System) detects train access at a glance to understand the operation and operation status of trains across the country. And an alarm system.

In general, railways are special ground transportations that allow railroad cars driven by mechanical power to move people and goods on railroad tracks made of steel, and are divided into single tracks, double tracks, double tracks and the like according to the number of tracks.

These railways are insulated at intervals of a certain distance (about 1km to 2km), and electrical signals of direct current or alternating current flow in each section. If an abnormality occurs in a track and the electrical signal is disturbed, it is located next to the track of the corresponding section. By operating the traffic lights installed to warn the railway car's engineer, the railway car can enter the section and prevent safety accidents.

On the other hand, the railroad is exposed to the track, and the aging is progressing over time, so that work is being done to repair it from time to time, and thus accidents that may occur when workers (repair personnel) repair the railroad track. In order to prevent in advance, several train approach detection apparatuses have been proposed in the past.

First, by installing a detection sensor by moving ultrasonic waves at a certain distance (on both sides of the track) of the track, when the train approaches, it detects it and wirelessly generates a warning sound on the operator or receiver. By alerting them that they are approaching, they are prepared to prevent accidents before the train approaches.

Secondly, by connecting a jump line to a railroad track (rail-rail), the receiver is operating in standby mode by receiving a frequency or track voltage that flows normally, and when the train comes, the frequency is not received or the track voltage is down. It detects the accident and alerts the operator or carrying receiver to inform that the train is approaching, so as to evacuate and prevent the accident in advance.

However, the first method of the conventional approach detection method of the train, by using an ultrasonic sensor and a wireless device installed a few kilometers before and at the rear of the workplace, unnecessary labor wastes, troublesome and Difficulties in installation have arisen, causing problems to avoid use.

In addition, the second method, because it is impossible to use when moving the work that the worker is circulating, it caused a problem that it is completely useless for the worker who has to move while checking the momentary work with a small number of people, ie single work or two-one work.

Therefore, the above two types of train approach detection methods are rarely used in the field due to the above, and thus, the workers working on the tracks always work in anxiety, so they are unable to make perfect work. doing

Serious accidents occurred frequently because the trains could not escape.

In the meantime, a method of using a child protection location tracking device and a distress rescue location tracking device in connection with a portable telephone has also been proposed, but this method is based on the relay position and the relay period contact position data of the repeater and the relay period.

Since the distance is calculated by the trigonometric method, the error of location tracking is large and the approximate location is detected. Therefore, even if the location is displayed, accurate search can be done to search the exact location. It caused a problem.

Proposed to solve all the problems of the prior art, the applicant (samsam Co., Ltd.) filed with the Republic of Korea Patent Office on December 30, 2002, registered on July 26, 2005 No. 10-2004-0060261 (hereinafter abbreviated as "prior art") has been proposed.

However, this prior art can alert the worker working on the track to a certain degree of train access, but provides the train operator with the exact position information of the train operator, or the current train operation position and the It was difficult to grasp the location at a glance.

Accordingly, the present invention has been proposed in order to solve various problems occurring in the conventional train approach detection method as described above,

An object of the present invention is to track the location of the railway maintenance personnel (workers) and trains in real time to provide information to the maintenance staff and the engineer of the train so that the train automatically alarms when approaching a certain distance so that the maintenance staff can safely prepare. To provide a train approach detection and alarm system.

Another object of the present invention is to provide a train approach detection and warning system to help the train driver to help the safe operation of the train by informing the driver of the train in advance.

It is still another object of the present invention to provide a train approach detection and alarm system that enables the central center (railroad integrated command room system) to grasp the operation and operation of trains nationwide at a glance.

"Train approach detection and alarm system" according to the present invention for achieving the above objects,

Receives satellite coordinates transmitted from satellites outputting GPS data to determine and display the location of the current train, transmits the train location information and operation information through the CDMA network, and crosses the crossing location, history location, A train terminal mounted on a train that receives a construction section and location information of a maintenance worker and compares the location information with the location information of the train and performs an alarm when approaching a certain distance;

Receives satellite coordinates transmitted from the satellite to determine the current position of the user, and transmits his position information through the CDMA network, and compares the position information of the train with the position information received through the CDMA network A portable train approach alarm device carried by a worker carrying out an alarm when the train approaches its own location;

A fixed train approach alarm device installed at each railroad crossing or history and receiving and displaying the speed, driving direction, and arrival schedule information of a train approaching the railroad crossing or history in real time through the CDMA network;

A wired / wireless integrated gateway connected to the CDMA network to perform a communication connection between the train terminal and the portable train access warning device;

A message switch connected to the wired / wireless integrated gateway to perform message switching and to control system traffic;

A location management server configured to store and manage a maintenance staff and train location information transmitted through the message switch in a database;

A web server connected to the message switch and the database and providing a map and vehicle information using a web;

A local history control system for accessing the web server through an internet network and managing train and boat personnel information in local history;

Connected to the web server and the local history control system through the Internet network to perform overall rail-related control, displaying the current position of the train and the working position of the crew, and approaching a certain distance between the train and the crew. It is characterized by consisting of a railway integrated command room system that performs the alarm display function.

In addition, the terminal for the train,

A GPS receiver which receives the signal transmitted from the satellite, restores the original signal, extracts and outputs necessary information;

A driving information storage unit for storing information relating to train operation;

A touch screen for inputting functions related to preparation for driving, starting of operation and checking of equipment;

A power supply unit supplying driving power for each device of the train terminal;

A control unit which is driven by the power supplied from the power supply unit and controls the entire operation of the terminal according to an operation and control program stored in an internal memory;

A CDMA transceiver connected to the control unit to transmit train location information through a CDMA network, and to receive location information, location information, and map information of the maintenance staff;

An LCD configured to display train position information and maintenance staff position information on a screen according to control of the controller;

A speaker for transmitting an alarm sound to the outside under the control of the controller;

It is connected to the control unit is composed of a communication port for data communication between the railroad crossing information, train announcement information and maintenance management information with an external device.

In addition, the portable train approach alarm device,

A GPS receiver which receives the signal transmitted from the satellite, restores the original signal, extracts and outputs necessary information;

A key button for inputting a function related to a standby mode, a start of work, and an inspection of equipment;

A power supply unit for supplying driving power for each block of the portable train access warning device;

A controller having a program related to system operation and control, including a memory for storing data generated during system operation, and controlling display of location information and generation of a train approach alarm;

A CDMA transceiver connected to the control unit for transmitting its location information through a CDMA network and receiving train location information;

An LCD connected with the controller to display a message related to a train approach on a screen;

A buzzer which transmits an alarm sound for approaching a train to the outside in response to the control of the controller;

A vibration motor configured to generate a vibration alarm for approaching a train in response to the control of the controller;

And a communication port connected to the controller to perform data communication with an external device.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. If it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a block diagram showing the configuration of a "train approach detection and warning system" according to the present invention.

Here, reference numeral 100 receives satellite coordinates transmitted from a satellite that outputs GPS data to determine and display the location of the current train, and transmits the train location information and the driving information through the CDMA network 200, and transmits the CDMA network ( Receives the location information of the construction section and the maintenance personnel through 200) and compares the location information of the train and shows a terminal for the train mounted on the train that performs an alarm when approaching a certain distance.

As illustrated in FIG. 3, the train terminal 100 includes: a GPS receiver 110 for receiving a signal transmitted from the satellite, restoring the original signal, extracting and outputting necessary information; A driving information storage unit 120 for storing information regarding the driving of the train; A touch screen 130 for inputting functions related to preparation for driving, starting of driving, and checking of equipment; A power supply unit 140 for supplying driving power for each device of the train terminal 100; A control unit 150 which is driven by the power supplied from the power supply unit 140 and controls the entire operation of the terminal according to an operation and control program stored in an internal memory; A CDMA transceiver (160) connected to the control unit (150) to transmit train location information through the CDMA network (200), and to receive location information, location information and map information of the maintenance staff; An LCD (170) for displaying train position information and maintenance staff position information on a screen according to the control of the controller 150; A speaker 180 for transmitting an alarm sound to the outside under the control of the controller 150; It is connected to the control unit 150 includes a communication port 190 for data communication between the railroad crossing information, train announcement information and maintenance management information with an external device.

In addition, the reference numeral 300 receives the satellite coordinates transmitted from the satellite to determine its current location, transmit its location information through the CDMA network, and train location information and its own received through the CDMA network It shows a portable train approach alarm device carried by the operator performing the alarm when the train approaches its location by comparing the location information.

As shown in FIG. 2, the portable train access warning device 300 includes: a GPS receiver 310 for receiving a signal transmitted from the satellite, restoring the original signal, and extracting and outputting necessary information; A key button 320 for inputting a function related to a standby mode, a start of work, and an inspection of equipment; A power supply unit 330 for supplying driving power required for each block of the portable train access warning device 300; A controller 340 having a program related to system operation and control, including a memory for storing data generated during system operation, and controlling the display of location information and the generation of a train approach alarm; A CDMA transceiver 350 connected to the control unit 340 to transmit its location information through the CDMA network 200 and to receive train location information; An LCD 360 connected to the controller 340 to display a message related to a train approach on a screen; A buzzer 370 for transmitting an alarm sound for approaching a train to the outside in response to the control of the controller 340; Vibration motor 380 for generating a vibration alarm for the approach to the train in response to the control of the control unit 340; And a communication port 390 connected to the controller 340 to perform data communication with an external device.

In addition, the reference numeral 800 is installed in the railroad crossing or each station, the stationary train for receiving and displaying the speed and driving direction and arrival schedule information of the train approaching the railroad crossing or the history in real time through the CDMA network (200) Indicates an approach alarm.

In addition, reference numeral 710 denotes a wired / wireless integrated gateway which is connected to the CDMA network 200 to perform a communication connection between the train terminal 100 and the portable train access warning device 300, and reference numeral 720 denotes the wired / wireless radio. Connected to the integrated gateway 710 to perform a message switching function, and represents a message switch 720 for performing system traffic control, reference numeral 730 denotes the maintenance staff and train location information transmitted through the message switch 720 The location management server 730 stores and manages the database 740. The database 740 records train operation time information and system abnormality detection information in addition to well-known train position information and maintenance staff position information.

Also, reference numeral 750 denotes a web server 750 connected to the message switch 720 and the database 740 to provide map and vehicle information using the web. Reference numeral 760 denotes a map server. Map information includes station names, tunnels, bridges, and speed limit areas for curved sections.

In addition, reference numeral 500 denotes a local history control system for managing train and auxiliary personnel information in a local history by accessing the web server 750 through the internet network 600, and reference numeral 400 denotes the internet network 600. Through the web server 750 and the local history control system 500 connected to perform the overall railway-related control, the current location of the train and the working position of the maintenance personnel, and a certain distance between the train and the maintenance personnel Represents a railway integrated command room system that performs alarm display in proximity.

The train approach detection and alarm system according to the present invention configured as described above transmits satellite coordinate information and time information to a portable train approach alarm device 300 carried by a train terminal 100 and a crew in real time from a satellite. .

As illustrated in FIG. 3, the train terminal 100 receives a signal transmitted from a satellite in the GPS receiver 110, demodulates it into an original signal, extracts necessary information, and transmits the necessary information to the controller 150. .

The controller 150 searches for its location information based on the extracted information, and transmits its searched location information and train information to the CDMA transmitter and receiver 160, and the train location information and the train in the CDMA transceiver 160. The information is converted into a CDMA signal and transmitted to the control system through the CDMA network 200. In this case, the train location information is preferably transmitted every 1 minute.

In addition, the portable train approach alarm device 300 carried by the maintenance worker (worker), as shown in Figure 2, the GPS receiver 310 receives a signal transmitted from the satellite, and demodulated it to the original signal required The information is extracted and transmitted to the controller 340.

The controller 340 searches for its location information based on the extracted information, and transmits its searched location information and train information to the CDMA transceiver 350, and the CDMA transmitter 350 trains the location information and the train. The information is converted into a CDMA signal and transmitted to the control system through the CDMA network 200. In this case, it is preferable to transmit the location information of the maintenance staff every one minute.

Position information and train location information transmitted to the control system via the CDMA network 200 is transmitted to the location management server 730 through the wired and wireless integrated gateway 710, message switch 720, location management server 730 ) Stores it in the database 740 and manages it.

The web server 750 transmits the train location information and the maintenance staff location information stored in the database 740 to the railway integrated command room system 400 through the Internet network 60, and the railway integrated command room system 400 performs Agent and train location information is displayed and managed, and each location information is controlled to be transmitted to each other relative position.

By such control, the web server 750 extracts the train location information and the maintenance staff location information stored in the database 740 by interworking with the location management server 730, the message switch 720, the wired / wireless integrated gateway 710, and Train location information is transmitted to the portable train approach alarm device 300 through the CDMA network 200, and the staff location information is provided to the train terminal 100, respectively.

On the other hand, in addition to the above-described control operation, the railway integrated command room system 400 performs the emergency position display and the blocking position display during construction, and displays the maintenance staff work path for a certain period of time. In addition, it performs the alarm display function when a certain distance between the train and the maintenance personnel, and when the emergency occurs due to the natural disaster, it performs the position input, and also performs the input function of the slow running position. As a result, it is possible to grasp the operation and operation status of the national trains at a glance, and to control the efficient management by identifying the work location of the trains and ships in the jurisdiction in the history of each region.

Next, look at the operation of the portable train approach alarm device 300 carried by the maintenance staff receiving the location information of the train as follows.

The maintenance staff turns on the power switch (not shown) to supply the driving power required for each block by the power supply unit 330, and inputs a corresponding command by using the key button 320 at the start and end of the work. If the command is input, the controller 340 transmits the command to the CDMA transceiver 350. The CDMA transmitter and receiver 350 converts the incoming maintenance personnel input data into a CDMA radio signal and transmits the same to the control system through the CDMA network 200.

When the train location information transmitted through the CDMA network 200 is received through the CDMA transceiver 350, the controller 340 displays the received train location information on the LCD 360, and displays its location and train location. Calculate the distance between and.

In addition, after calculating their location and distance between the train, the approach distance is displayed on the LCD 360, for example, the distance to the current train in the manner of 2km, 1.5km, 1km, 500m You will. When the train approaches within a predetermined distance, the buzzer 370 or the vibration motor 380 is driven to alert the crew to approach the train. Here, the drive of the buzzer 370 or the vibration motor 380 is selectively set by the maintenance staff in advance. For example, assuming that the predetermined distance is 1km, when the distance between the train and the maintenance staff reaches 1km, the buzzer 370 or the vibration motor 380 is driven to alert the approach of the train according to the selection of the maintenance staff. Have personnel evacuate safely. In this case, if the train has passed through its location, it is desirable for safety to release the alarm after a certain time without dismissing the alarm immediately.

In this way, when the train access and alarm is performed by the CDMA method between the portable train approach alarm device 300 and the control system carried by the maintenance staff, it is possible to escape a lot of the radio signal shadowing area. I can help.

On the other hand, the train terminal 100 receives the location information, construction section location information, speed limit zone location information, map information, and the like transmitted through the CDMA network 20 to the CDMA transceiver 160 is the control unit 150 Controls the display of the corresponding information on the LCD 170, and calculates the distance between its location and the maintenance staff.

In addition, after calculating the distance between the position and the line staff, the approach distance is displayed on the LCD 170, for example, the current distance to the line staff 2km, 1.5km, 1km, 500m Will be displayed. In addition, when the crew member is located within a predetermined distance, an alarm sound is generated through the speaker 180 to allow the driver (engineer) to drive safely. That is, when the maintenance personnel and the train approaches within a certain distance, an alarm sounds to control the operation of the train while paying attention to the engineer. This has the advantage that the engineer can handle the emergency independently even in the event of an unexpected risk situation by the driver's precautionary operation.

In addition, the controller 150 controls the train operation through communication with the railroad crossing controller, the train announcement system, the train protection system, and the maintenance management system through the communication port 190, thereby achieving optimal safety operation.

4 is an operation flowchart of a train approach detection and warning system according to the present invention.

As shown here, the portable train approach alarm device (maintenance agent terminal) carried by the maintenance staff and the train terminal (train terminal) mounted on the trains transmit their position information through a CDMA communication center system (railroad integration) at regular intervals. Command system),

When the center system searches for trains within a 4Km radius and the train personnel, the center system transmits the position information of the maintenance staff to the train terminal, and transmits the position information of the train to the portable train approach alarm.

After that, the portable train approach alarm calculates its position and the position of the train, and when the train approaches up to 2 km, an alarm is issued from that time, so that the crew can evacuate, and when the evacuation is completed, the information is transmitted to the center system. Tell the driver of the train.

When the train passes the maintenance personnel, the portable train approach alarm displays the start of the passing work, and when the center system receives the situation, it sends the end of the situation to the portable train approach alarm and the train terminal. It will perform the same operation as before.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

According to the present invention as described above, by tracking the location of the railway maintenance personnel (workers) and the train in real time to provide information to the maintenance staff and the engineer of the train by the maintenance staff by ringing the alarm automatically when approaching a certain distance This has the advantage of being safe.

In addition, there is an advantage in providing the driver of the train in advance to inform the location of the maintenance staff to help the safe operation of the train.

In addition, the central center (Railway Integrated Command Room System) also has the advantage that you can see at a glance the operation and operation of the national train.

Claims (5)

Receives satellite coordinates transmitted from satellites outputting GPS data to determine and display the location of the current train, transmits the train location information and operation information through the CDMA network, and transmits the construction section and maintenance personnel through the CDMA network. Receive the location information and location information of the fixed train access warning device to be described later and compare with the location information of the train and is mounted on the train that performs the alarm about the moving speed, position and direction when approaching a certain distance, and transmits from the satellite A GPS receiver which receives the received signal, restores it to the original signal, extracts and outputs necessary information, a driving information storage unit for storing information about train operation, and is driven by a power supplied from a power supply which will be described later. Control unit for controlling the overall operation of the terminal according to the stored fare and control program, CDM is connected to the control unit A CDMA transceiver that transmits train location information through network A and receives location information, construction section location information, and map information, and an LCD for displaying train location information and location information on the screen under control of the controller. And a train terminal equipped with; Receives satellite coordinates transmitted from the satellite to determine the current position of the user, and transmits his position information through the CDMA network, and compares the position information of the train with the position information received through the CDMA network When the train approaches its location, it performs an alarm, can be carried by the operator, receives the signal from the satellite, restores the original signal, extracts and outputs the necessary information, standby mode, and work. Key buttons for inputting functions related to start-up and equipment check, and a memory for storing data generated during system operation, including built-in programs for system operation and control, and control of display of location information and generation of train access alarms. A control unit which is connected to the control unit and transmits its own location information through a CDMA network, A portable train approach alarm device having a CDMA transceiver for receiving; A fixed train approach alarm device installed at each railroad crossing or history and receiving and displaying the speed, driving direction, and arrival schedule information of a train approaching the railroad crossing or history in real time through the CDMA network; It is connected to a web server and a local history control system which will be described later through the internet network, and performs overall railway-related control. A railway integrated command room system that performs a function and has an emergency position display function and an alarm display function when a certain distance between a train and a maintenance staff is approached; In configuring a train approach detection and alarm system comprising: A wired / wireless integrated gateway connected to the CDMA network to perform a communication connection between the train terminal and the portable train access warning device; A message switch connected to the wired / wireless integrated gateway to perform a message switching function and to control traffic; A location management server configured to store and manage a maintenance staff and train location information transmitted through the message switch in a database; A web server connected to the message switch and the database to provide a map and vehicle information using a web; Is included, The train terminal includes a touch screen for inputting functions related to preparation for operation, start of operation, and equipment check, a power supply unit for supplying driving power required for each device of the train terminal, and an alarm sound according to the control of the controller. A speaker for transmitting to the outside, and a communication port connected to the control unit to communicate with the external device for railroad crossing information, train announcement information, train protection information, and maintenance management information; The portable train approach alarm device includes a power supply unit for supplying driving power required for each block of the portable train approach alarm device, an LCD connected to the controller to display a message related to train access on the screen, and corresponding to the control of the controller. Buzzer for transmitting an alarm sound to the outside of the train approach, a vibration motor for generating an alarm for the train approaching to vibration in response to the control of the controller, and connected to the controller to perform data communication with an external device. To include the communication port, The railway integrated command room system includes a function for displaying a blocked position during construction, a work path display function for a certain period of time, a location input and a train protection function when an emergency occurs due to a natural disaster, and a slow operation point location pressure function. Detection and alarm system. The train approach detection and alarm system according to claim 1, further comprising a local history control system for accessing the web server through the Internet network to manage train and auxiliary personnel information in local history. delete delete delete

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