JP2000318613A - Train monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and precisely ensure the safety of train operation by loading a global positioning system receiver for measuring its own position on a train, transmitting the own position information to a monitoring station and another train by a communication circuit set between the monitoring station and the train, and transmitting map information from the monitoring station to the train. SOLUTION: In each train, the signal from a global positioning system(GPS) satellite is received by a GPS signal receiver 20, and the GPS signal is corrected with a GPS correction signal 33 received through a communication circuit to determine precise own position information 32. This is transmitted from an own position information transmitter 16 to a monitoring station and another train by a communication satellite through a communication satellite antenna 83. On the other hand, map information is received by a map data receiver 24, another train position information 32 is received through an another train position information receiver 22, and time information and position information are inputted to a mapping device 28. According to this, the own position and the position of another train on a map can be precisely displayed in each train.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train monitoring system for operating a train.

[0002]

2. Description of the Related Art FIG. 10 is a diagram showing an outline of a typical conventional train monitoring system. 10, 4a is a train, 3 is a monitoring station, 53 is a vehicle information setting device, and 54 is an ATS.
(Automatic Train Stop) On-board equipment, 55 is an ATS car upper child, 56 is a ground child, 57 is a ground transmitter, 58 is a ground receiver, 59 is a reception processor, 60 is a display, and 61 is a train operation instruction generation. It is a vessel. The information such as the train code number and speed is set by the vehicle information setting device 53, and A
The transmission processing is performed by the TS on-board device 54 and the ATS on-board child 55
To the ground child 56 installed on the ground. Ground child 5
The information such as the code number and the speed of the train received by the receiver 58 through the receiver 6 is identified by the reception processor 59 in the monitoring station 3, and the position of the train is determined by the installation position of the ground child 56 and the code number of the train. The indicator 60 indicates the train position. The present information of the ground signal and the distance information to the stop signal for the train are set by the train operation instruction generator 61 and transmitted from the ground child 56 to the ATS vehicle child 55 via the transmitter 57.

[0003]

In the prior art shown in FIG. 10, the information such as the present information of the ground signal and the distance information to the stop signal for the own vehicle of the train is transmitted, but the map of the own train is transmitted. There is no confirmation of the position on the above and information on the positional relationship with other trains, the dependence on the driver's visual information is high,
There is a problem with the train operation confirmation work, such as operation judgment on terrain where visibility is difficult, from the point of accurate situation grasp, labor saving and quickness, the situation can be confirmed on the train, all trains at the monitoring station It is desired to build a train monitoring system that enables integrated confirmation of trains.

The present invention has been made to solve such a problem. By installing a device for measuring the position of the own train on a train, accurate position information of the own train can be obtained, and a monitoring communication line can be obtained. By using communication satellites in
In each train, it is possible to acquire the position information of other trains and monitor multiple trains by one monitoring station, calculate the proximity by comparing the position of own train and other trains, and calculate the position information of own vehicle and other vehicles By calculating the change amount and direction of each unit time, predicting the course of the own vehicle and other vehicles and performing proximity prediction, it is possible to confirm the train position on the map and predict the proximity of other trains for each train , Railway crossings, and the situation image acquired by the image data transmission device in the station premises is transmitted to each train and monitoring station by a communication line with a communication satellite installed between the image data transmission device and each train and monitoring station, and passed by train Crossing, and the situation inside the station premises can be grasped in advance, and by acquiring and displaying the information of the own vehicle position, proximity warning, proximity prediction warning, status image from each train comprehensively at the monitoring station, Train operation safety Fast, it is intended to propose a train monitoring system to accurately secured.

[0005]

In the train monitoring system according to the first aspect of the present invention, the train is equipped with a GPS receiver for measuring the position of the vehicle, receives a GPS signal from a GPS satellite, and transmits a signal between the monitoring station and the train. A means for transmitting the vehicle position information from the train to the monitoring station and other trains by the set communication line, and transmitting the map information and the GPS correction signal from the monitoring station to the train. Each train uses a GPS signal and a GPS correction signal. Obtain own vehicle position (latitude, longitude) information, obtain other vehicle position information via a communication line via a communication satellite between trains, input the obtained position information into map information, Means for confirming the position of the car, means for inputting own vehicle position information and other vehicle position information to the proximity detector, setting a detection range for detecting the approach of another train, means for detecting the proximity of another train, In addition, railroad crossings and Means for selecting and acquiring the situation image from the image data transmission device installed in each station premises based on the own vehicle position information, displaying it on the same screen as the map display, and confirming the safety of train operation, The operation is performed by the monitoring station and the operation of each train is grasped.

[0006] In the train monitoring system according to the second invention,
The speed and direction information are obtained by calculating the change and the direction of the position information of the own vehicle and the other vehicle for each unit time, and time integration of the own train and other trains at a future time is performed by using the speed and the direction information. This is to perform proximity prediction.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of a train monitoring system according to the present invention will be described below with reference to the drawings.

Embodiment 1 1, 2 and 3 show a first embodiment of the present invention. FIG. 1 is a conceptual diagram showing the concept of the present invention, wherein 1 is a communication satellite, 2 is a GPS satellite for transmitting GPS signals, 3 is a monitoring station, 4a... 4n are trains. Communication satellite 1 between monitoring station 3 and trains 4a, 4n
A communication line is set up via, and mutual information can be transmitted. 62a, 62b, and 62n are image data transmission devices that are installed at railroad crossings and in each station yard, and add and edit image code numbers, installation position information, and time information to railroad crossings and station yard images, and each train 4a via the communication satellite 1 4n and the monitoring stations 62a to 62n. FIG. 2 is a diagram showing the function of the monitoring station 3. The GPS signal from the GPS satellite 2 is received by the GPS signal receiver 78 via the antenna 8, and the known installation position information of the monitoring station 3 and the GPS signal receiver 78 are used. GPS correction signal generator 8 for obtaining a deviation from the obtained position information
0 generates a GPS correction signal 81, which is transmitted from the antenna 8 to the trains 4a to 4n via the communication satellite 1. on the other hand,
The vehicle position information from the trains 4a... 4n is received by the position information receiver 13 via the antenna 8, and the position information decoder 1
2, train code number 14, location information 15 including time information
The required map information 84 is selected from the map information database 5 by the area searcher 9 based on the position information 15, and the train data number 14 is added to the map information 5 by the map data encoder 6 and coded. After that, the train 4a via the communication satellite 1 from the map data transmitter 7 via the antenna 8 is used.
4n.

[0009] Further, a train code number 14 and position information 15 including time information are displayed on a map by the map position superimposing device 10.
Is displayed on the map by the monitoring station display 11.

[0010] The image data transmission devices 62a, 62b ...
The crossing from 62n, the situation image in the station yard is transmitted through the antenna 8 of the monitoring station 3 via the communication satellite 1 and the image data receiver 4
The monitoring station display 11 displays the situation image information 45 received at 4 and discriminated into an image code number, installation position information, time information, and a situation image. FIG. 3 is a diagram showing the operation of each train 4a... 4n, wherein the map information 84 via the communication satellite antenna 83 is provided by the map data receiver 24, the other vehicle position information 34 is provided by the other vehicle position information receiver 22, The GPS correction signal is received by the GPS correction signal receiver 21. GPS from GPS satellite 2
The GPS signal is received by the GPS signal receiver 20, and the GPS correction signal 33 received by the GPS correction signal
The GPS signal is corrected by the signal corrector 25 to obtain accurate vehicle position information 32. The own vehicle position information code / editor 17 uses the time information 30 from the time signal generator 18, the train code number 31 from the train code signal generator 19, and the own vehicle position information 3.
2 is edited and coded, and the vehicle position information transmitter 16 is edited.
Is transmitted to the monitoring station 3 and other trains 4n by the communication satellite 1 via the communication satellite antenna 83. The map data receiver 2 acquires map information corresponding to the train code number of the vehicle.
4, the map data 36 is stored in the map data storage device 27 and, at the same time, the mapping device 28 is used for displaying the map.
Is input to The other-vehicle position information 34 passes through the other-vehicle position information receiver 22, and the other-vehicle position information decoder 26 extracts the train code number, the time information, and the position information.
8 is input.

In the image data receiving / processing device 67, the image data transmitting devices 62a, 62b, 62n in the station crossing nearest to the train traveling direction and the station premises are transmitted to the vehicle position information 35.
Image data transmission device 62 set in advance based on
a, 62b,... 62n, and the corresponding image data transmission devices 62a, 62b,.
A line connection is made to 62n, and a situation image of the railroad crossing / station yard is received by the image data reception / processor 67 from the communication satellite antenna 83 via the communication satellite 1, and the image code number, installation position information, time information, and situation Image information 6
8 is displayed on the display 29. Image data transmission device 6
The lines between the trains 2a, 62b... 62n and the trains and the monitoring stations are connected during a period of time required for data transfer of situation images, and the line connection operation is performed by the image data transmission devices 62a, 62b for trains. .. Are continuously repeated until they pass through 62n, and after passing through the target image data transmission devices 62a, 62b. Perform the same line connection operation. FIG. 4 shows the configuration of the mapping device 28.
The position on the map is set based on the own vehicle position information 32,
The position on the map is set by the other vehicle position setting device 38 based on the other vehicle position information 34, and is displayed on the map by the display device 29. With the above operation, the positions of the own vehicle and the other vehicles on the map can be accurately displayed in each train.

FIG. 5 is a diagram showing the proximity detection of a train. In the mapping device 28, the distance between the other vehicle position information 45 and the own vehicle position information 32 is detected by the proximity detector 46, and when the vehicle is in the proximity warning range, the proximity alarm is issued. 47 is generated and displayed on the display 29, and at the same time, inputted and edited by the own vehicle position information editor 17, and transmitted to the monitoring station 3 by the communication satellite 1 via the own vehicle position information transmitter 16 and the communication satellite antenna 83. . FIG. 6 is a diagram showing the operation of the proximity detector 46, and 40 is a rail 41 on the map.
FIGS. 4A and 4B are diagrams showing the positional relationship between the own vehicle position T1 and the other vehicle positions T2 and Tn at 41a and 41b. This is set as a function, and a proximity warning is issued to another vehicle T2 existing within the range. In the monitoring station 3, the position information decoder 12 extracts the train code number 14, the position information 15 including the time information, and the proximity alarm 47, and outputs the information to the map position superposition device 1.
With 0, the train code number 14, the position information 15 including the time information, and the proximity alarm 47 are displayed on the map by the monitoring station display 11. FIG. 7 shows an image data transmission device 62.
a, 62b, 62n, 63 is an image camera, 64 is an image processor, 65 is an image data transmitter, 66
Is an image data antenna. An image processor 64 adds an image code number, installation position information, and time information to the image of the crossing and the situation inside the train traveling station acquired by the image camera 63, and transmits a satellite communication line from the image data transmitter 65 via the image data antenna 66. Is transmitted to the train and the monitoring station.

Embodiment 2 FIG. FIG. 8 is a diagram showing a second embodiment of the present invention, in which the speed / azimuth detector 49 calculates the change of the position information of the other vehicle position information 45 and the position information of the own vehicle position information 32 per unit time, and Get vehicle speed information,
The direction information is obtained from the track of the position change, and the proximity prediction detector 50 performs the path prediction of the own vehicle and the other vehicle at a future time by time integration using the speed and direction information. One example of the speed information calculation method will be described below using the own vehicle position information 32 as an example. Own vehicle speed (longitude component) = (L1-L0) / t L0: Initial position of own vehicle position (longitude component) L1: Own vehicle position (longitude component) after time t t: Time from L0 to L1 Own vehicle The latitude component of the speed and the speed of the other vehicle are obtained in the same manner as above.

FIG. 9 is a diagram showing the operation of the proximity prediction detector 50, and 43 is a diagram showing a predicted positional relationship between the own vehicle position T00 and the other vehicle position T10. The base position T00 of the own vehicle and the current position are shown. The own vehicle speed is calculated from T01, and future times t2 and t3 are calculated.
Then, the own vehicle positions T02 and T03 are calculated and set as the own vehicle predicted position. With respect to other vehicles, the other vehicle predicted position is obtained by the same processing. A distance range of the front and rear L centered on the own vehicle position T1 as the proximity prediction warning range at each of the own vehicle positions T02 and T03 is set as a function of the speed and braking characteristics of the own vehicle as a function, and the other vehicle with respect to the proximity prediction warning range at each position. The distance to the position T10 is compared by the proximity prediction detector 50, and when another vehicle is in the proximity prediction warning range, a proximity prediction alarm 51 is generated and displayed on the display 29, and at the same time, inputted and edited by the own vehicle position information editor 17. And the vehicle position information transmitter 16 and the communication satellite antenna 83
And transmitted to the monitoring station 3 by the communication satellite 1. In the monitoring station 3, the position information decoder 12 uses the train code number 14,
The position information 15 including the time information, the proximity warning 47, and the proximity prediction warning 51 are extracted, and the train code number 14 and the position information 1 including the time information are displayed on the map by the map position superimposing device 10.
5. Proximity alarm 47 and proximity prediction alarm 51
1 is displayed on the map.

[0015]

According to the first aspect of the present invention, the vehicle position information by the vehicle position measuring device provided in the train, the image data for installing at the railroad crossing and each station yard, and transmitting the railroad crossing and the situation image of the station yard. Based on the situation image from the transmission device and the map information obtained between the monitoring station and the train and via the communication line set between each train, the exact position of the vehicle and the position of other vehicles on the map, as well as the crossings scheduled to pass, stations The situation image of the premises can be checked at each train and the monitoring station, and the monitoring station can monitor the operation of many trains at once. In addition, the safety of train operation can be ensured by comparing the own vehicle position information and the other vehicle position information with a proximity detector that sets a detection range for detecting the approach of another vehicle and issuing a proximity warning.

According to the second invention, the speed and direction of each train are calculated from the position information of the own vehicle and the position information of the other vehicle, and the approach of the other vehicle to the own vehicle is predicted from the information on the speed and the direction. By issuing a prediction warning, the safety of train operation can be ensured.

[Brief description of the drawings]

FIG. 1 is a diagram showing Embodiment 1 of a train monitoring system according to the present invention.

FIG. 2 is a diagram showing a form of a monitoring station in the train monitoring system according to the present invention.

FIG. 3 is a diagram showing a form of each train in the train monitoring system according to the present invention.

FIG. 4 is a diagram showing a configuration of map position setting in the train monitoring system according to the present invention.

FIG. 5 is a diagram showing a form of proximity detection of the train monitoring system according to the present invention.

FIG. 6 is a diagram showing the operation of the proximity detector for implementing the train monitoring system according to the present invention.

FIG. 7 is a diagram showing a configuration of an image data transmission device of the train monitoring system according to the present invention.

FIG. 8 is a diagram showing a third embodiment of the train monitoring system according to the present invention.

FIG. 9 is a diagram showing the operation of the proximity prediction detector in the train monitoring system according to the present invention.

FIG. 10 is a diagram showing an outline of a conventional typical train monitoring system.

[Explanation of symbols]

1 communication satellite, 2 GPS satellite, 3 monitoring station, 4a, 4
n train, 5 map information database, 6 map data encoder, 7 map data transmitter, 8 antenna, 9
Area searcher, 10 map position superimposing device, 11 monitoring station display device, 12 position information decoder, 13 position information receiver, 14 train code number, 15 position information including time information, 16 own vehicle position information transmitter, 17 Own vehicle position information code / editor, 18 time signal generator, 19 train code number generator, 20 GPS signal receiver, 21
GPS correction signal receiver, 22 Other vehicle position information receiver, 2
4 map data receiver, 25 GPS signal corrector, 26
Other vehicle position information decoder, 27 map data storage device,
28 mapping device, 29 display, 30 time information, 31 train code number, 32 own vehicle position information, 33
GPS correction signal, 34 other vehicle position information, 36 map data, 37 map own vehicle position setting device, 38 map other vehicle position setting device, 40 positional relationship between own vehicle position T1 and other vehicle position T2, 41a, 41b map Upper rail, 42 Proximity detection range, 43 Predicted positional relationship between own vehicle position T00, T01, T02, T03 and other vehicle position T10, 44 Image data receiver, 45 Situation image information, 46 Proximity detector, 47 Proximity alarm, 49 Speed, direction detector, 50 proximity prediction detector, 51 proximity prediction warning, 53 vehicle information setting device, 54
ATS on-board equipment, 55 ATS on-board, 56 ground, 57 ground transmitter, 58 ground receiver, 59 reception processor, 60 display, 61 train operation instruction generator, 6
2 image data transmission device, 63 image camera, 64 image processor, 65 image data transmitter, 66 image data antenna, 67 image data receiving / processing device, 68 image information, 78 GPS signal receiver, 80 GPS correction signal generator , 81 GPS correction signal, 83 Communication satellite antenna, 84 Map information.

Claims (2)

[Claims] In a train monitoring system for monitoring the operation of a large number of trains, a GPS (Global Positioning) which is provided in the train and measures a position of the own vehicle is provided.
A system global positioning system) receiver, a GPS correction signal receiver, a GPS satellite transmitting a GPS signal,
A communication line set between the monitoring station and the train, a proximity detector that inputs the location information of the own vehicle and the location information of the other vehicle, and sets a detection range for detecting the approach of the other train, a railroad crossing and each station premises With the installed image data transmission device, furthermore, the vehicle position information from the train to the monitoring station and other trains via the communication line set between the monitoring station and the train, and for the train from the monitoring station A means for transmitting management information including map information to the train via a communication line set between the monitoring station and the train, and a level crossing to be passed from now on, or a status image of each station yard and the above image data transmission device and monitoring. Means for transmitting to the train and the monitoring station via a communication line set between stations and trains, and displaying the positions of the own vehicle and other vehicles and the proximity of other vehicles on a map display of each train, Now on the same screen as the map view Train monitoring system, characterized in that it comprises means for monitoring the passing railroad crossing, or to display the stations premises situation image train operation in each train. 2. A speed / direction detector which is provided in a train, inputs own vehicle position information and other vehicle position information, and calculates a speed and a direction of the train. The train monitoring system according to claim 1, further comprising a proximity prediction detector for predicting the approach of the train.