JP2009202635A - Automatic reporting system for train - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic reporting system for a train capable of providing urgent information to both an operator and passengers in an emergency. <P>SOLUTION: An image photographed by a monitoring camera 1 which is installed in or along the track of a railway is taken into an obstacle detection device 10, and digitally treated. The automatic urgent information reporting device 20 mounted on the train detects an obstacle and always transmits the results of the detection using a radio transmission means. The automatic reporting device receives the results of the detection from the obstacle detection device 10, classifies the results according to the remaining distance up to the obstacle and the speed of the train, and reports the classified urgent information to the operator by a control platform display 40 and to the passengers by a display 51 and a speaker 52 disposed in the train. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an automatic train notification system that monitors an obstacle to train operation and makes an emergency call when an obstacle is detected.

  A conventional train automatic notification system such as Patent Document 1 automatically installs a camera or sensor in the vicinity of a train track such as a platform to automatically detect an obstacle, and if it is determined to be an obstacle, In addition to sending emergency signals to decelerate or stop, information was also sent to train command centers and station staff.

Japanese Patent Laying-Open No. 2004-9993 (pages 5 to 12, FIG. 1)

Conventional train automatic notification systems transmit emergency signals to train operators, train command centers, and station staff, but do not give any information to passengers. For this reason, a passenger may be exposed to a strong impact during a sudden braking operation of a train or a collision with an obstacle.
When there is a possibility that the train may collide with an obstacle, the warning is given to the passenger in advance using a method such as in-car broadcast or display, the response method is guided, and the passenger follows the warning or guidance. If you take it, you can avoid disasters such as whiplash.
Even when an emergency brake is applied, the passenger can avoid falling if guided in advance by a handrail or a strap.

At present, only the conductor can provide guidance to passengers, and the conductor receives information from the driver and guides the passengers, so it takes time to detect the obstacles and guide the passengers. It often takes.
Also, the driver's braking operation is often performed prior to guidance by the conductor, and passengers are suddenly shocked when the emergency brake is activated or when it collides with an obstacle in an unprotected state.
However, in the conventional system as described above, the warning is given only to the driver, and the warning is not given directly to the passenger and the conductor, so the unexpected situation for the passenger such as the derailment or collision of the train, There were problems, such as insufficient advance information presentation and increased damage.

  This invention is made in order to solve the above subjects, and it aims at obtaining the train automatic notification system which provided emergency information also to a passenger with a driver at the time of emergency.

In the train automatic notification system according to the present invention, a monitoring camera arranged to monitor an obstacle on a train track, and an image taken by the monitoring camera are analyzed to determine whether there is an obstacle on the train track. When obstacles are identified, obstacle detection devices that transmit obstacle information wirelessly to nearby trains, and obstacle information that is installed in each train and transmitted by obstacle detection devices Equipped with an emergency information automatic notification device that receives and reports emergency information,
The emergency information automatic notification device performs one or both of display on a cab display device arranged in a cab of a train, display on a display device arranged in a train and a train vehicle, and broadcasting by a speaker. It is configured to report to the train information providing device,
The obstacle information is ranked based on the speed of the train and the remaining distance to the obstacle of the train, and the emergency information set in advance corresponding to the rank is reported.

As described above, the present invention analyzes a monitoring camera arranged to monitor an obstacle on a train track, and analyzes an image taken by the monitoring camera, and determines whether there is an obstacle on the train track. When obstacles are identified, obstacle detection devices that transmit obstacle information wirelessly to nearby trains, and obstacle information that is installed in each train and transmitted by obstacle detection devices Equipped with an emergency information automatic notification device that reports emergency information,
The emergency information automatic notification device performs one or both of display on a cab display device arranged in a cab of a train, display on a display device arranged in a train and a train vehicle, and broadcasting by a speaker. It is configured to report to the train information providing device,
For obstacle information, the emergency level is ranked based on the train speed and the remaining distance to the train obstacle, and the emergency information set in advance corresponding to the rank is reported. At the same time as reporting to the driver, it is possible to notify the passenger by means of video and audio from a display device and a speaker installed in the vehicle, and it is possible to promptly recognize the danger to the passenger.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to the drawings.
1 is a block diagram showing an automatic train notification system according to Embodiment 1 of the present invention.
In FIG. 1, the train automatic notification system is composed of equipment provided on the ground and equipment provided on the vehicle.
As the ground part, there are a monitoring camera 1 and an obstacle detection device 10. The monitoring camera 1 is provided in or along the railroad track, and an image taken by the monitoring camera 1 is taken into the obstacle detection device 10. The obstacle detection device 10 detects the obstacle 2 based on the video input from the surveillance camera 1 and constantly transmits a detection result using a wireless transmission means.
The vehicle system is configured as follows. The emergency information automatic notification device 20 receives the detection result from the obstacle detection device 10 and reports the train information to the driver and passengers. The speed generator 30 generates a sinusoidal alternating current. The GPS antenna 31 receives GPS radio waves. The wireless antenna 32 is an antenna for communicating with the obstacle detection device 10 by wireless means mounted on the vehicle. The cab display 40 displays train information to the driver. The train information providing device 50 provides train information to passengers by means of a train guidance display device 51 and an automatic broadcast speaker 52.

FIG. 2 is a block diagram showing an obstacle detection apparatus according to Embodiment 1 of the present invention.
2, 1 and 10 are the same as those in FIG.
The obstacle detection device 10 provided on the ground is configured as follows. The video processing unit 11 receives the input analog video signal and performs digital signal processing. The video comparison unit 12 compares the video captured by the surveillance camera 1 with the information in the video storage unit 13. The video storage unit 13 stores a video with no obstacles on the train track. The obstacle pattern storage unit 14 stores the obstacle pattern in a fixed manner. The obstacle determining unit 15 determines whether the obstacle is present for the train when the video comparing unit 12 has changed. The wireless transmission means 16 transmits an emergency signal to the running train. The output of the wireless transmission means 16 is connected to the wireless antenna 17.

FIG. 3 is a block diagram showing an emergency information automatic notification apparatus according to Embodiment 1 of the present invention.
In FIG. 3, numerals 20, 30 to 32 are the same as those in FIG.
The emergency information automatic notification device 20 is configured as follows. The wireless unit 21 receives a wireless signal from the obstacle detection device 10 via the wireless antenna 32. The speed counter 22 detects the train speed from the output of the speed generator 30. The position detecting means 23 obtains the train position from a GPS radio wave or by a method of integrating speed data detected by the speed counter 22.
The storage means 24 is a read-only storage means that stores rank information of train information automatic notification according to installation location data on the railway line of the monitoring camera 1 for obstacle detection and the train speed and the distance to the obstacle. It is. The rank selector 25 ranks the urgency of the obstacle information. The arithmetic processing unit 26 calculates the remaining distance to the obstacle based on the output of the position detection unit 23. The interrupt signal generating means 27 generates an interrupt signal for the cab display 40 and the train information providing device 50 and outputs an automatic notification.

FIG. 4 is a diagram showing an emergency information notification rank file of the emergency information automatic notification device according to the first embodiment of the present invention.
In FIG. 4, the emergency information notification rank is given according to the distance between the train speed and the obstacle. For example, rank A is classified into the rank B when the emergency level is so high that the collision between the train and the obstacle cannot be avoided even if the emergency brake is applied. This is the case where a collision with the obstacle can be avoided.

Next, the operation will be described.
First, the operation of the ground part will be described. The surveillance camera 1 is installed at a place where a train operation failure is likely to occur, such as a railroad crossing or platform, a large curved part where the line of sight is bad, or a point where a lot of rock falls, etc. The one with specifications according to the shooting environment such as a visual camera is adopted.
Further, the number of surveillance cameras 1 to be installed is not limited to one, and a plurality of surveillance cameras 1 may be installed. In that case, even if one of the cameras breaks down, it can be taken with another camera, so that the system can have redundancy.
The video imaged by the monitoring camera 1 is normally taken into the obstacle detection device 10 as an RGB color signal and an analog signal of horizontal / vertical synchronization signals. In the obstacle detection device 10, digital processing is performed based on the video input from the monitoring camera 1, and the obstacle 2 is detected.

  Detection of the obstacle 2 by the obstacle detection apparatus 10 is performed as follows. In FIG. 2, an analog video signal input from the surveillance camera 1 is subjected to digital signal processing by the video processing unit 11. The video storage unit 13 stores a video in a state where there is nothing on the train track in the range captured by the monitoring camera 1. The video comparison unit 12 retrieves video data without any obstacles from the video storage unit 13 and compares it with a newly captured video obtained from the video processing unit 11. If there is a change as a result of comparing the data in the video storage unit 13 with the data taken by the monitoring camera 1, the obstacle determination unit 15 determines whether an object on the train track becomes an obstacle for the train.

Obstacles for trains are rockfalls, cars, human bodies, etc. on the track, which impede the safety or operation of the train. On the other hand, small animals and small garbage that do not affect train operation are not considered obstacles.
The obstacle pattern storage unit 14 stores various patterns of objects that become obstacles for the train. When the video change information detected by the video comparison unit 12 matches the obstacle pattern stored in the obstacle pattern storage unit 14, it is determined that there is an obstacle on the train track.
Moreover, even if it does not necessarily match the pattern data in the obstacle pattern storage unit 14, it may be determined that the detected obstacle is an obstacle when it is larger than a certain size.
When it is determined that there is an obstacle on the train track, the obstacle detection device 10 transmits detection of the obstacle to the traveling train by the wireless transmission means 16.

Next, the operation of the emergency information automatic notification device 20 on the vehicle side will be described.
In FIG. 3, a speed generator 30 is mounted on the vehicle to generate a sinusoidal alternating current. The speed generator 30 is normally attached to the vehicle truck shaft end or the motor gear case, and the number of sine waves generated increases as the rotation of the wheels increases. The speed counter 22 takes a sinusoidal alternating current and shapes the waveform to obtain a rectangular pulse. If this pulse is counted for a certain time and converted into a unit time count, the speed can be obtained. Similarly, for the position information, it is assumed that the wheel makes one revolution to generate N sine waves. Since the diameter of the wheel (wheel diameter: D) is determined, if one revolution is made, πD (mm) is advanced and N pulses are obtained. If this is integrated by the position detection means 23, the train position can be obtained. In addition, if the integrated value is reset by opening and closing the door at each station, the detection error can be minimized.
The above is an example of position detection using the speed generator 30, but it is also possible to detect the position using radio waves emitted from satellites using GPS as is well known. In this case, a signal from the GPS antenna 32 is received and the position is detected by the position detector 23.

  The arithmetic processing unit 26 reads the monitoring camera arrangement information file along the line from the storage unit 24 to obtain the position information detected by the position detection unit 23, and monitors the obstacle that is input by the obstacle detection device 10. The remaining distance to the place where the camera 1 is installed is calculated.

  On the other hand, when the radio means 21 receives an emergency signal from the obstacle detection device 10, this signal is handled by the rank selector 25. In addition, the train speed information from the speed counter 22 and the remaining distance to the monitoring camera that has detected the obstacle determined by the arithmetic processing means 26 are input to the rank selector 25.

The rank selector 25 determines the emergency signal report rank based on the remaining distance to the obstacle 2 of the train and the speed of the train itself. When determining the report rank, the rank selector 25 refers to the emergency information report rank file stored in the storage unit 24.
FIG. 4 is an example of an emergency information notification rank file. As seen in FIG. 4, the speed is divided into several stages, and the remaining distance is also divided into several stages. The rank selector 25 confirms what the current state is and compares the emergency information report rank file with the remaining distance information to the obstacle and the train speed information, and determines the report rank. The emergency information report rank file in FIG. 4 may be different depending on the train, and may be different depending on the situation, such as when the weather is sunny and when it is raining.

For example, rank A is classified into rank B when the emergency level is extremely high such that collision between the train and an obstacle may not be avoided even if emergency braking is applied. For example, a collision with an obstacle can be avoided. The reason for dividing the urgency by rank is to change the contents of announcements to the driver and passengers by rank.
For example, in the case of rank A, there is a possibility of collision between the obstacle and the train, so the driver is instructed to make an emergency stop, and when the train and the obstacle collide with the passenger It is necessary to have a prepared posture, and it is necessary to make a more urgent announcement.
In the case of rank B, only sudden braking is required, and the driver may be instructed to decelerate or stop, and the passenger may be alerted to be caught by handrails or straps nearby. The rank is not limited to two stages A and B, but may be divided into three or more stages depending on the announcements to the driver and passengers.

  As described above, when the emergency signal notification rank is determined by the rank selector 25, an interrupt signal is generated by the interrupt signal generating means 27 and transmitted to the cab display 40 and the train information providing device 50.

A display device 51 is connected to each vehicle beyond the train information providing device 50, and the normal broadcast content broadcast until then is instantaneously switched to an emergency video. The video to be switched is selected according to the rank. For example, in the case of rank A, there are warning character information indicating “squatting and lowering the center of gravity”, pictograms of people who have lowered the center of gravity, and blinking of a lamp that calls attention. In the case of rank B, it is warning character information or a pictogram indicating that it is caught by a nearby handrail or strap.
At the same time, an announcement corresponding to the rank is sent from the speaker 52 connected to the train information providing apparatus 50. For example, in the case of rank A, the contents are such as “Square the emergency stop so please squat down and lower the center of gravity”. In the case of rank B, it is a content such as “Beware of sudden braking”.
Since this information is transmitted to the passengers before the driver's braking operation, the passengers can prepare not only for collision with obstacles but also for emergency braking. Can be taken.

The interrupt signal generation means 27 also generates an interrupt signal for the cab display 40. The cab display 40 provides various information to the driver. The driver is notified of the emergency situation by displaying information on the cab display 40. In addition to the presence or absence of obstacles, the distance between the train and the obstacles can also be displayed. In addition, the driver may be notified by voice.
The driver is contacted and performs the brake operation according to the rank. In the case of rank A, there is a possibility that a collision with an obstacle may be unavoidable, so an emergency brake is immediately applied and emergency stop measures are taken. Even in the case of rank B, operations such as sudden stop and deceleration by brake are performed.
When an emergency signal is interrupted, when a certain time has elapsed or when the brake is released, or when the obstacle detection device 10 detects that the obstacle has been removed, the emergency information automatic notification device 20 Makes an effort to determine this information, creates an emergency display end interrupt, and returns the cab display 40, the train information providing device 50, and the display device 51 connected thereto to a normal state.

According to the first embodiment, an obstacle on the train track is automatically detected using a camera installed on the track, and an emergency signal is sent to the train, so that the driver is notified and installed in the vehicle at the same time. The voice and video from the display device and the speaker can be used to notify the passenger and promptly recognize the danger.
In addition, by ranking emergency information and reporting according to the rank, the driver and passengers can take a defense posture in an emergency in advance.

Embodiment 2. FIG.
FIG. 5 is a block diagram showing an automatic train notification system according to Embodiment 2 of the present invention.
In FIG. 5, 1, 10, 20, 30 to 32, 40, and 50 to 52 are the same as those in FIG. The train radio ground system 60 is a collection of a central station, a business network, and a plurality of base stations. The train radio ground system 60 is connected to the obstacle detection device 10 via the communication line 61. The vehicle is provided with a train radio antenna 62 and a train radio mobile station 63 that communicate with the train radio ground system 60.

FIG. 6 is a block diagram showing an obstacle detection apparatus according to Embodiment 2 of the present invention.
In FIG. 6, reference numerals 1, 10 to 17 are the same as those in FIG. In FIG. 6, a train radio interface 18 (train radio interface means) is provided and connected to a communication line 61 so that it can communicate with the train radio ground system 60.

FIG. 7 is a block diagram showing an emergency information automatic notification device according to Embodiment 2 of the present invention.
In FIG. 7, 20 to 27 and 30 to 32 are the same as those in FIG. In FIG. 7, a mobile station interface 28 (mobile station interface means) is provided and connected to the train radio mobile station 63.

  In Embodiment 1, the method which transmits the signal from the obstacle detection apparatus 10 to the train currently traveling directly with the radio signal was shown. However, in this case, since the distance that can directly transmit information to the train is whether it reaches 100 m at the longest, in the second embodiment, it is outside the reach of the wireless signal from the wireless transmission means 16 of the obstacle detection device 10. In order to transmit information to existing trains, a method of transmitting a signal to a running train using train radio is also used.

The train radio is provided with a communication channel used for operation commands and business communication, an emergency channel used for emergency notification, and a maintenance channel used for communication between the command center and maintenance personnel. A plurality of base stations are provided on the track, and are connected via a business network to a central station provided at a central command station that performs operation command work.
The train radio ground system 60 in FIG. 5 collects a central station, a business network, and a plurality of base stations. In order to communicate with the train radio ground system 60, the vehicle is provided with a train radio antenna 62 and a train radio mobile station 63 so that an operation command and a train crew can communicate with each other.

  In the obstacle detection device 10 of the second embodiment, as shown in FIG. 5, a train radio interface unit 18 is added and connected to the train radio ground system 60 via a communication line 61. When it is determined that there is an obstacle on the train track, the detected obstacle information is given to the train radio ground system 60 from the communication line 61, and the train radio ground system 60 that has received the obstacle uses the emergency system channel. Information is sent via a base station to a train that may collide with an object or a train that is affected by an obstacle.

  In the second embodiment, the emergency information automatic notification device 20 mounted on the train is used in two ways: from the obstacle detection device 10 to the wireless transmission means 16 such as a wireless LAN, and through the train wireless ground system 60. Receive obstacle information. At this time, if the information is obtained by both methods, the information from the wireless transmission means 16 such as the wireless LAN is prioritized, and the information from the wireless transmission means 16 such as the wireless LAN is out of the communication range or transmission information is missing. Is not obtained, it is used for rank selection using information from the train radio ground system 60.

  According to the second embodiment, information is once sent to a central command station using a train radio system, and a signal is sent from the central command station to a running train, thereby moving away from an obstacle detection device that has detected an obstacle. For trains that may be subject to operation restrictions regardless of whether the train is the first closest train to the obstacle detection device or a subsequent train after that. Has the advantage of being able to issue a warning.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram which shows the train automatic notification system by Embodiment 1 of this invention. It is a block diagram which shows the obstruction detection apparatus by Embodiment 1 of this invention. It is a block diagram which shows the emergency information automatic notification apparatus by Embodiment 1 of this invention. It is a figure which shows the emergency information notification rank file of the emergency information automatic notification apparatus by Embodiment 1 of this invention. It is a block diagram which shows the train automatic notification system by Embodiment 2 of this invention. It is a block diagram which shows the obstruction detection apparatus by Embodiment 2 of this invention. It is a block diagram which shows the emergency information automatic notification apparatus by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surveillance camera 2 Obstacle 10 Obstacle detection apparatus 11 Image | video processing part 12 Image | video comparison part 13 Image | video storage part 14 Obstacle pattern memory | storage part 15 Obstacle judgment part 16 Wireless transmission means 17 Wireless antenna 18 Train radio | wireless interface 20 Emergency information automatic notification Device 21 Wireless means 22 Speed counter 23 Position detecting means 24 Storage means 25 Rank selector 26 Arithmetic processing means 27 Interrupt signal generating means 28 Mobile station interface 30 Speed generator 31 GPS antenna 32 Wireless antenna 40 On-cab display 50 Train information providing device 51 Display Device 52 Speaker 60 Train Radio Ground System 61 Communication Line 62 Train Radio Antenna 63 Train Radio Mobile Station

Claims (3)

Monitoring camera arranged to monitor obstacles on the train track, analyze the video taken by this monitoring camera, determine the presence or absence of obstacles on the train track, and close when obstacles are determined An obstacle detection device that wirelessly transmits obstacle information to a train traveling on the train, and an emergency that is installed in each train and that receives obstacle information transmitted by the obstacle detection device and reports emergency information Equipped with an automatic information reporting device,
The emergency information automatic notification device is one of a cab display device arranged in the cab of the train and a display on a display device arranged in the train of the train and a broadcast by a speaker. Or it is configured to make the above notification to the train information providing device that performs both,
About the obstacle information, ranking the urgency based on the speed of the train and the remaining distance to the obstacle of the train, and reporting the emergency information set in advance corresponding to the rank Train automatic notification system.   The emergency information automatic notification device includes a wireless unit that receives obstacle information from the obstacle detection device, a speed counter that takes in an output from a speed generator to obtain the speed of the train, and a radio wave from the GPS or the speed Integrating the train speed information obtained by the counter, position detecting means for detecting the position of the train, a rank selector for selecting the rank of urgency using the train position information and the speed information, The train automatic notification system according to claim 1, further comprising an interrupt signal generating means for generating an interrupt signal for transmitting the emergency information to the cab display device and the train information providing device. The obstacle detection device has the train wireless interface means for transmitting the obstacle information detected by the obstacle detection device to a train that is traveling away from the obstacle detection device by train radio. ,
The emergency information automatic notification device has mobile station interface means for receiving the train radio, and when the obstacle information transmitted by the obstacle detection device is not received, received by the mobile station interface means The train automatic notification system according to claim 1 or 2, wherein the emergency information based on obstacle information by train radio is reported.

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