KR20000073900A - Train access automatic alarm system and method - Google Patents

Abstract

PURPOSE: A train approach alarming apparatus is provided to prevent safe accident owing to a train previously by informing a line worker and a round checker that a train approaches, by wireless. CONSTITUTION: A train approach alarming apparatus comprises a transmitter(150) which sends alarm data for alarming train approach as a wireless signal. A reception part(160) receives the sent alarm data. A data setting part(110) stores predetermined alarm data according to each function. A control part(110) sends the alarm data through the transmitter(150) using data set in the data setting part(110) according to a function selection of a function select operation part(120). The control part(110) parses the alarm data received through the reception part(160) to generate corresponding response data or a corresponding alarm. The sensitivity of the transmitter(150) and the reception part(160) is controlled by the control part(110). An alarm part(170) generates a train approach alarm according to the control of the control part(110).

Description

Train access automatic alarm system and method

The present invention is to prevent various accidents that may occur during the operation of the train of the railway and subway, in particular to prevent in advance the safety accidents caused by the train during work on the track, and the operator of the train to the track It is safe to know in advance that it is safe to operate, and also train approaching to prevent accidents on the train and accidents caused by trains approaching in case of accidents on railroad tracks and accidents at railroad crossings in advance. It relates to an alarm device and an automatic alarm method.

Train operation is basically operated in a way that drives the train safely, accurately and quickly and improves transportation efficiency.

Accordingly, the train achieves the purpose of its operation with the help of fixed routes, fixed operating times between stations, signaling devices, track switching devices, track circuit devices, interlocking devices and crossing security devices.

However, many train operations require more work on tracks as new tracks, electricity, and signal communications are required to be established, supplemented, and repaired, and workers are at risk for safety because the delay of track work is directly related to the delay of safe operation. We work on work while feeling.

In addition, the number of railroad crossings is increasing due to urban and population growth, and traffic accidents at railroad crossings are increasing every year due to the rapid increase in the industrial economy and the increase in the number of cars.

According to the Korean National Statistical Office, there have been about 300 crossing traffic accidents every year since 1991 in Korea, resulting in an increase in life and property damage.

In addition, trains are caused by unexpected events such as flooding of tracks, rail breaks due to train operation, other accidents on tracks, and collisions with trains in cars that do not comply with road traffic laws at crossings. Major accidents such as clashes, derailments and overturns are also occurring.

According to the above, various methods are used to prevent safety accidents due to train operation, for example, train operators operating before working on a track are notified of the working hours and hours and minutes. The track workers place the train monitors in front of the work zones to monitor the trains coming.The supervisors will notify the workers when the trains are in view and avoid them to safety zones. It is a situation to perform work.

However, this primitive approach has many risks: train monitors can't signal early enough before approaching trains, so workers have a short time to evade to safety zones and work on tracks and trains known to train engineers. It is very likely that time will lead to fatal accidents.

For example, the accident of a track worker by Saemaul Lake in April 1999 in Busan was caused by track workers who started work ahead of the working hours of the engineer and thought it was safe.

High-speed trains, such as Saemaul or high-speed trains, have a problem that voice alerts by humans do not have enough time to avoid them.

In addition, if the place to evacuate when working in the double track and double track section, there is a problem that leads to a life-saving accident when the train finally passes on the track.

For example, in October 1988, an accident occurred between Gyeongbu Line Noryangjin-Yongsan, which would not have happened if workers had enough time to avoid.

In addition, the track worker and the circuit inspector carry the radio, but do not communicate with the train, but it takes time to deliver information in case of accident by communicating between the station and the worker and the communication between the station and the train. The stopping time is also delayed.

According to the National Railroad's statistics, as of the end of December 1995, the number of crossings in the country reached 1,918, and there were 1,765 places where alarm devices were installed, and 2,117 breakers were installed in one kind of crossings.

There are also places with and without crossing workers, places with and without alarms, places with and without breakers.

However, in the case of the first crossing, train accidents caused by cars that do not obey the road traffic law due to the time difference from the start of the alarm sound to the breaker descent when approaching the train, accounted for 53% of the total crossing accidents. In addition, railroad crossing accidents caused by the failure of the railroad crossing alarm system occur.

In addition, accidents have been repeated despite crossing control by railroad workers.

The problem is that accidents are frequent at these various types of crossings due to the increasing number of cars and people.

Train accidents at railroad crossings can lead to train derailment or severe rollovers. Moreover, railroad accidents on high-speed railways can lead to greater casualties and material damage.

When examining the safety accident prevention method according to the currently used train operation, the development of a faster, more accurate and safer prevention method is urgently needed.

Therefore, the automatic train approach alarm system according to the present invention is configured to automatically generate a train approach alarm signal in a more rapid, accurate and safe manner in order to prevent safety accidents due to train operation in such various types of environments.

The first object of the present invention for solving the above problems, the train operator and the circuit inspector receives the train access alarm data via wireless to know in advance that the train is approaching, avoiding the safety place, to prevent safety accidents by the train in advance It is to provide a train approach automatic alarm device to prevent the.

In addition, the second object of the present invention is to provide a train approach automatic warning device that can prevent the safety accident by the train in advance by performing a safe operation in advance that the driver of the train is also in the front track. will be.

For the third object of the present invention, when the train is approaching without knowing the flooding of the track, the rail breakage, the accident on the track, the accident of the railroad crossing, the track worker, the circuit inspector and the railroad worker warn you in advance of the safety accident by the train It is to provide a train approach automatic alarm device to prevent the.

And the fourth object of the present invention, when a sudden accident in the place where there is no crosswalk workers, automatically warns when the train approaching without knowing, train access automatic alarm device that can prevent the safety accident by the train in advance It is to provide.

In order to achieve the above objects, the present invention has the following features.

The present invention to achieve the above object,

A transmitter for transmitting alarm data for alarming a train approach as a radio signal;

A receiver for receiving train alarm data transmitted from a transmitter of another train approaching alarm device;

Set alarm data for various situations in advance so that alarm data can be selected according to the site situation, work section or progress status and track distinction, and transmit the corresponding transmission data through the transmitter by the user's operation selection. A control unit for controlling an alarm by receiving alarm data from another train approaching alarm device through the receiving unit;

Alarm means for making a train approach alarm under control of the controller;

To construct a train approach automatic alarm device consisting of a power supply for supplying power to each of the parts,

The train access alarm system is installed as a stationary device in each train, and provided as a portable device by a line worker or a site requiring train access alarm. This is accomplished by configuring to alert the approach of the train as it transmits and receives.

On the other hand, the train access automatic alarm device for transmitting and receiving alarm data to inform the train access to the train is installed as a stationary device, and provided as a portable device to a track worker or an accident occurrence site, and the train is established by two-way communication between the stationary device and the mobile device. As a method of alerting the approach, the transmission power of the stationary device of the train is larger than the transmission power of the portable device using the power of the portable battery, so that remote transmission is possible in the train,

Transmitting, by a fixed device installed in the train, primary alarm data indicating the approach of the train to a portable device in the field;

Transmitting a response data to the stationary device of the train in response to the reception of the primary alarm data as well as a primary alarm informing a train approach when the portable device in the field receives the primary alarm data;

When the stationary device of the train receives the response data from the portable device at the site, generating an alarm for notifying the engineer of the train that the vehicle is approaching a work site and transmitting second alarm data;

When the portable device in the field receives the second alarm data, the second device may perform a process of generating a second alarm for notifying that the train is close.

In addition, the train approach automatic alarm device is selected as a relay device and placed in front of a distance capable of communicating with a portable device in the field, and when the relay device receives primary alarm data from the stationary device of the train, response data is sent. And when the portable device in the field receives the response data of the relay device, transmits the same response data as when receiving the primary alarm data from the train and makes a primary alarm according to the approach of the train. When the second alarm data is received from the train, the relay device sends the second response data together with the second alarm occurrence, and the portable device in the field receives the second response signal of the relay device to generate the second alarm. Characterized in that made.

In addition, the portable device is configured so that the portable device transmits the emergency alarm data in the area where the accident occurs, so that when the fixed device of the train receives the emergency alarm data, emergency measures such as stopping or decelerating the train may be taken. Characterized in that made to.

In addition, the portable device is connected to the railroad crossing device to receive the accident occurrence information from the railroad crossing alarm system is configured to transmit an emergency alarm signal to the fixed device of the train according to the accident information.

In addition, the automatic train approach alarm device, distinguishing the transmission data by distinguishing the up / down train and the double track by the user's selection, and the alarm device receiving the transmission data decrypts it to generate a corresponding alarm sound It is characterized by the distinction.

1 is a detailed configuration of the automatic train approach alarm system to which the present invention is applied;

2 is a flow chart of a train side alarm according to the present invention;

3 is a flow line alarm generation flow chart according to the present invention.

* Explanation of symbols for main parts of the drawings

110: control unit 120: function selection control unit

130: external signal input unit 140: control unit

150: transmitter 151: modulator

152: transmission amplifier 153: antenna

154: transmission control data buffer 160: receiver

161: reception amplifier 162: demodulator

163: reception control data buffer 170: alarm unit

180: power supply unit 181: power supply unit

182: power monitoring unit

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

1 is a detailed configuration of the automatic train approach alarm system to which the present invention is applied,

A transmitter 150 for transmitting alarm data for alarming a train approach as a radio signal;

Receiving unit 160 for receiving the alarm data transmitted from the transmitter of the counterpart train approach alarm,

The user selects the alarm data type and the transmission and reception sensitivity and the function selection operation unit 120,

A data setting unit 110 which presets alarm data for each function such as emergency alarm, work alarm, train path discrimination, track distinction, fixed device installed on a train, portable device on site, and relay device;

The alarm data is transmitted through the transmission unit 150 using the data set in the data setting unit 110 by the function selection of the function selection operation unit 120 and the alarm data received through the reception unit 160. A control unit 110 that reads and controls transmission of corresponding response data or secondary alarm data, generates a corresponding alarm, and controls transmission / reception sensitivity of the transmission / reception unit 150 or 160;

An alarm unit 170 for generating a corresponding train approach alarm under control of the controller 110;

The power supply unit 180 is configured to supply power to each unit and monitor the power state to display the power state.

Here, the controller 110 further includes an external signal input unit 130 to allow the control unit 110 to transmit corresponding alarm data based on an external input signal such as a crosswalk monitoring device.

Then, the train approach automatic alarm device of the present invention is installed as a stationary device in the train, and carried as a portable device in the field, or installed as a stationary device in the crossings and the like.

The stationary device of the train is configured to use the power inside the train, and the portable device of the field is configured to use the battery power source.

Accordingly, the stationary device of the train is configured to transmit alarm data with much greater power than the field portable device, and the portable device has a weaker output power than the stationary device of the train.

Therefore, the control unit 110 operates by distinguishing between the stationary device mode of the train and the portable device mode of the field, and also because the transmission and reception power of the portable device of the site is weak, the radio wave interference area, the mountain area, the sharp curve or the tunnel. And so on, the sensitivity of radio wave transmission and reception is configured to serve as a relay between the mobile device and the stationary device of the train.

The data setting unit 110 may set data in advance by using a RAM, or may include a plurality of dip switches instead of RAM, and set alarm data by operating a dip switch under a predetermined condition. .

In addition, the transmission unit 150 is a modulator 151 for modulating the alarm data of the control unit 110, a transmission amplification unit 152 for amplifying the modulated data transmitted through the antenna 153, and The transmission control data buffer 154 controls the transmission amplifier 152 based on the transmission control data of the control unit 110.

The modulator 151 is configured to modulate using any one of frequency shift keying (FSK), minimum shift keying (MSK), phase shift keying (PSK), and spread spectrum (SS). That is, the radio wave modulation method can be designed in consideration of the regulations prescribed by the Radio Law and the radio wave influences around the track or train.

The receiving unit 160 through the antenna 153 based on the reception control data buffer 163 for buffering the reception control data of the control unit 110 and the reception control data through the reception control data buffer 163. Receiving amplifier 161 that receives only the train approach alarm control data signal of the received radio signal, and a demodulator 162 for demodulating the received data received through the receiver amplifier 161 to provide to the control unit 110 do.

Although not shown in the drawings, the automatic train approach alarm system according to the present invention under the control of the control unit 110, the status information according to the current transmission and reception status of the primary alarm data reception, secondary alarm data reception, emergency alarm data, etc. And display means (eg, an LCD display panel) for displaying menu information and the like for operation by text or graphics.

In addition, the alarm unit 170 is configured to alarm using a buzzer and a warning lamp, and configured to distinguish between the primary alarm and the secondary alarm by the control of the controller 110. In addition, a voice chip and a speaker may be provided to output the recorded voice of the alarm with a warning sound to accurately notify the current state.

Looking at the interaction for each component of the train access automatic alarm device configured as described above are as follows.

The data setting unit 110 sets up and down line route distinguishing data, double line section route distinguishing data, up and down line train alarm data, each up and down line primary and secondary alarm data, emergency alarm data, etc. , The control unit 110 is programmed to operate by distinguishing the mode to the stationary device mode of the train, the portable device mode of the field, the relay device mode, the field fixed device mode receiving an external input is selected through the function selection operation unit 120 It is configured to operate with each corresponding function.

Train access automatic alarm system is installed as a stationary device in the train, and the railroad worker carries the train access alarm system as a portable device and sets the respective mode.

Then, the fixing device of the train sets whether the corresponding train is an upline or a downline, and the portable device on the site distinguishes and sets whether the work line is an upline or an downline. These settings are set by the user through the function selection operation unit 120.

2 is a control flowchart of the automatic train approach alarm system installed in the train according to the present invention.

After setting as the stationary device mode of the train as described above, if the power is turned on (ON) to operate, the control unit 110 is a stationary device mode of the train for transmitting the first and second alarm data in the initialization step (S1). Initialize

As described above, when the train is operated after being initialized as the fixed device mode of the train, the controller 110 performs the corresponding first alarm data transmission step S2 to transmit the first alarm data as a wireless signal through the transmitter 150. do.

The transmitter 150 receives the alarm data from the controller 110, modulates the carrier data through the modulator 151, and transmits a radio signal through the transmission amplifier 152, wherein the controller 110 is buffered. The transmission amplifier 152 is controlled through 154 to control the transmission interval and the output strength.

The train maintains the reception waiting state while transmitting the primary alarm data at regular time intervals, and checks whether there is a reception of response data indicating that the primary alarm data has been received from the portable device in the field (S3).

Upon receiving the response data, it is determined whether the received data is data of a predetermined condition, and controls to generate a corresponding alarm sound (S4). That is, it is controlled by distinguishing between an emergency alarm and an alarm indicating that there is a normal work section in front or an alarm sound to be slow in the work section.

Then, the second alarm data is transmitted (S5), and the second alarm data is transmitted while the operation section is passed until the operation section passes, and when the operation section passes (S6), it returns and repeats again from the first alarm data transmission step. do.

The passage of the work zone may cause the portable device of the field to transmit the passing information by the operation according to the passing of the train.

3 is a flow chart of a portable device in the field of the automatic train approach alarm system according to the present invention.

On-site portable devices are to be carried by the track operator or inspector and placed in front of the work zone to detect and approach the train.

If it is set as the portable device mode and the power is turned on, the control unit 110 is initialized to the portable device mode of the field (S11), and receives the primary alarm data transmitted from the stationary device of the train, and the primary alarm. Upon receipt of the data (S12), the primary alarm sounds (S13) to indicate that the train is approaching from a distance.

Subsequently, in response to the reception of the primary alarm data, response data selected in advance according to the situation of the site is transmitted (S14), and the response data is transmitted until the secondary alarm data is received from the train.

Accordingly, when the second alarm data is transmitted from the train that has received the response data, the portable device receives the second alarm data (S15) and generates a second alarm sound (S16).

Secondary alarms are alarms that tell you that a train is near, allowing you to stop work and evacuate.

Then, when the train passes, stop sending the response data to notify the train passing, or by providing a train passing button to notify the train passing the work section by the user.

On the other hand, the train or operator's portable device does not necessarily notify the passage of the work zone and do not need to receive it. Since this is determined by the transmission distance of the portable device from the time of receiving the first alarm data to the work section in the train, the second alarm data can be automatically transmitted as the passage of the work section for a predetermined time experimentally obtained. In accordance with this, the portable device can distinguish the passage of the train by automatically generating the second alarm sound for a predetermined time in consideration of the time that the train can approach and pass after receiving the second alarm data.

The train transmits distinguished information in the transmission data such as whether the current track is an uphill line, a downhill line, or which track on a double-track track, and the portable device receiving the data indicates what kind of data the received alarm data is. To determine the corresponding alarm sound and display it.

The portable device transmits the information according to the on-site situation when transmitting the response data after receiving the primary alarm data. It transmits information as response data to indicate whether the on-site situation should be a slow run of the train, an emergency stop or normal operation.

The type of the response data is set in the data setting unit 110 and the user selects the information by operating the function selection operation unit 120.

On the other hand, since a portable device uses a battery power source, its power is weak, and thus there may be a problem in that a sufficient distance cannot be secured in a radio interference region or a mountainous region.

Therefore, another portable device is set in the relay mode and placed in front of the distance to ensure sufficient communication with the portable device in the work section.

Accordingly, since the relay apparatus receives the primary alarm data transmitted from the train and transmits the response data, the train can receive the response data of the relay apparatus arranged in advance at a predetermined distance from the portable apparatus.

Therefore, the train receives the response data in advance by an arbitrary distance between the relay device and the portable device, so that the secondary alarm data can be generated in a state where a sufficient safety distance is secured.

When the portable device is installed as a device capable of transmitting an emergency situation on a site at a fixed position such as a railroad crossing, and receives the alarm data according to the emergency situation of the railroad crossing device through the external signal input unit 130, the controller 110 transmits the emergency alarm data to recognize the emergency situation of the crossing at the train. That is, when no emergency signal is input, the response data is transmitted as data indicating that it is in a normal state. When an emergency signal is input when an accident occurs at the crossing, emergency alarm data is immediately transmitted to the train so that the train can cope with it.

By using this same function, the present invention can be used as a response device of an unmanned surveillance apparatus having a risk of an accident.

In addition, in the transmission and reception sensitivity control of the automatic train approach alarm system of the present invention, when a radio wave disturbance occurs due to the geographical effect and the response data transmission distance of the portable device is shortened, the second alarm data is generated in the train after receiving the response data. Since the portable device generates the second alarm sound only when the portable device receives the secondary data, the portable device may have a short time to evacuate.

In this case, the transmission power is adjusted to increase the output power of the portable device so that the train can receive the response data more remotely.

On the contrary, when long distance transmission is possible without open area or radio interference, the distance for the train to receive the response data from the portable device becomes longer, and the second alarm sound is generated too soon according to the secondary alarm data, so the work is stopped and evacuated too soon. Efficiency is reduced.

Therefore, in such a case, lower the output power so that it can be evacuated according to the train approach warning at a suitable distance.

In addition, by adjusting the reception sensitivity of the receiver 161 through the buffer 163 to adjust the transmission and reception sensitivity, it is possible to adjust the reception sensitivity of the alarm data to an appropriate distance.

In the transmission and reception sensitivity adjustment, when the user operates the function selection operation unit 120 to increase / decrease the power, the control unit 110 controls the transmission amplification unit 152 through the buffer 154 to transmit a transmission output. To increase or decrease.

In addition, the power supply unit 181 in the power supply unit 180 supplies power to each of the components, and at this time, the power supply unit 182 monitors whether the supplied power is properly supplied through a power supply state through an LED or the like. By displaying, you can always recognize the operating status of the portable device. When the battery power becomes weak, it will alert you about the battery replacement time.

As described above, the present invention enables to prevent in advance various safety accidents that may occur during the operation of trains of railroads and subways, and transmits information more quickly and accurately than the method used for preventing the conventional safety accidents, By using the existing wireless data communication technology, the track worker and the circuit inspector can know and avoid the train approach far enough in advance before the train approaches, and the engineer of the train knows that the worker is on the track in advance. Safety driving, that is, both sides receive an alarm sound, thereby preventing a safety accident in advance.

In addition, emergency alarm data is sent to trains in case of an emergency such as accidents on railroad tracks, accidents at railroad crossings, and double accidents when there are no workers at the railroad crossings to prevent train accidents. Can be.

Therefore, the train approach automatic alarm device of the present invention has an effect that can be used in other fields, that is, the field of digital control and monitoring by a wireless remote device, the monitoring of moving objects.

Claims (11)

A transmitter 150 for transmitting data for alarming a train approach as a radio signal, Receiving unit 160 for receiving the alarm data transmitted from the transmitter of the counterpart train access alarm, A function selection control unit 120 for adjusting a user's type of alarm data, transmission / reception sensitivity, and user operation; A data setting unit 110 having preset up / down line route distinguishing data, double line section route distinguishing data, up / down line train distinguishing data, primary and secondary warning data, and emergency alert data; The alarm data is transmitted through the transmission unit 150 using the data set in the data setting unit 110 by the function selection of the function selection operation unit 120 and the alarm data received through the reception unit 160. A control unit 110 that reads and controls transmission of corresponding response data or secondary alarm data, generates a corresponding alarm according to alarm data reception, and controls transmission / reception sensitivity of the transmission / reception unit 150 or 160; An alarm unit 170 for generating a corresponding train approach alarm under control of the controller 110; It is composed of a power supply unit 180 for supplying power to each of the parts and monitors the power state and displays the state. The train approach automatic alarm device, characterized in that installed on the train as a fixed device, the worker in the field is carried as a portable device to alert the train approach by mutual data transmission and reception. The method of claim 1, wherein the data setting unit Train access automatic alarm device, characterized in that the user manually sets the alarm data type by a predetermined rule using a plurality of dip switches. The method of claim 1, wherein the control unit In the stationary mode of the train which transmits the first alarm data, and when the response data is received from the portable device, alarms and transmits the second alarm data, After receiving the first alarm data of the train, the program is installed to selectively carry out the first alarm box and response data, and to selectively carry out the on-site portable device mode to receive the second alarm after receiving the second data. And a one-chip processor configured to find alarm data set in the data setting unit by controlling the selection of the function selection unit, control transmission of the corresponding alarm data, and read data received through the receiving unit to control the generation of the corresponding alarm. Train approach automatic alarm system. The method of claim 1, wherein the transmitting unit A modulator configured to receive alarm data to be transmitted from the controller and carry and modulate a carrier wave; A transmission amplifier for receiving the modulated alarm data through a modulator and amplifying the alarm data to a desired output and transmitting the FM data in an FM wireless manner; An antenna radiating the radio transmission signal of the transmission amplifier into the air; And a transmission control data buffer for controlling the transmission amplifier under the control of the control unit and buffering control data for adjusting amplification sensitivity and applying the buffer to the transmission amplifier. 5. The apparatus of claim 4, wherein the modulator Train access automatic alarm device characterized in that the modulation using any one of the method (Fsk (Frequency Shift Keying), MSK (Minimum Shift Keying), PSK (Phase Shift Keying), SS (Spread Spectrum) method. The method of claim 1, wherein the receiving unit A reception control data buffer for buffering reception control and reception sensitivity adjustment data of the control unit; A receiver which receives train access alarm data received from the antenna based on reception control data through the reception control buffer; And a demodulator configured to demodulate the alarm data received through the receiver and provide the demodulated alarm data to the controller. The method of claim 1, The system further includes an external signal input unit, which is installed in the railroad crossing alarm system that monitors and alerts the state of the railroad crossing, and receives accident occurrence information from the railroad crossing alarm system through the external signal input unit, and responds to the first alarm data of the train. Train access automatic alarm device, characterized in that made to send the status information of the crossing. The method of claim 1, wherein the alarm unit, A buzzer and an alarm lamp for selectively generating a primary alarm sound, a secondary alarm sound and an emergency alarm sound under the control of the controller; And a means for recording an alarm voice message according to each alarm data in advance and outputting a corresponding alarm message by voice under control of the controller. Equipped with a transmitting device for transmitting wireless alarm data, a receiving device for receiving and a train access alarm device for generating alarm sounds according to the transmission and reception of alarm data by a fixed device on a train and a portable device on a site worker, In the method of automatically alarming access, Transmitting primary alarm data while a stationary device of the train is in operation; When the portable device in the field receives the first alarm data of the train and sends a first alarm and transmits response data set according to the on-site situation; When the stationary device of the train receives the response data of the portable device, alarming the response data and transmitting secondary alarm data; When the portable device receives the second alarm data of the train, the automatic approach to the train approach, characterized in that to perform the process of the second alarm for notifying that the train is close to automatically alarm the approach of the train. The method of claim 8, The train approach automatic alarm method, characterized in that for varying the transmission output of the train automatic access warning device, or the reception sensitivity by varying the distance of the train access alarm sound between the stationary device of the train and the portable device in the field. The method of claim 8, In the train approach automatic alarm device, the up and down line route distinguishing data, the double line section route distinguishing data, up and down line train distinguishing data, primary and secondary alarm data, emergency alarm data is set in advance, according to the situation of the site A train approach automatic warning method comprising selecting and sending the corresponding alarm data as response data.