JPH08301114A - Train approach alarming device - Google Patents

Abstract

PURPOSE: To surely check an approach of a train without respect to a location and land form of a construction field. CONSTITUTION: When a kilometer distance of a construction field is inputted from an operation unit 9 in a portable terminal device 6 and data of a traveling train is demanded, a traveling distance and a traveling speed at this present for a train 2 are received as train data via a leakage coaxial cable 5 from the traveling train 2. In a control unit 10, on the basis of train data received in a data transmitting unit 8 and the kilometer distance of the construction field inputted in the control unit 9, a distance and a time of the approaching train 2 until arrival at the construction field are computed at a real time. Then, the computed result is indicated in a display unit 11 at a real time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train approach warning device for informing a civil engineer working on a track of approach of a train such as a Shinkansen train.

[0002]

2. Description of the Related Art Conventionally, monitoring of approaching trains during track construction work has been carried out from the dispatcher to the on-site worker by visually confirming on-site or by confirming the on-line status of the dispatcher who is monitoring the train operation. I was informed of the approach of the train by wireless communication.

[0003]

Conventionally, when the approach of a train is confirmed by the above-mentioned method, the work is performed in a place where the visibility is poor, or in the terrain where radio waves are hard to be received. However, there was a problem in terms of safety, such as delayed confirmation of approaching trains and delayed evacuation of workers from the tracks, leading to serious accidents in some cases.

The present invention has been made in order to solve the above problems, and it is possible to surely know the approach of a train regardless of the place, the terrain, etc. and to know the approach situation of the train. It is an object of the present invention to provide a train approach warning device that enables safe track work.

[0005]

In the train approach warning device according to the present invention, a mobile terminal device receives transmission data from a train via a leaky coaxial cable laid along a track, and based on the received data, It calculates the location of the train and detects the approach.

[0006]

According to the present invention, based on the train travel distance and travel speed data transmitted from the train, and the kilometer data of the construction site input from the mobile terminal device, the expected reach distance and time of the train to the construction site are calculated. Is calculated, the approaching situation of the train is displayed on the mobile terminal device in real time, and an alarm is issued when the approach warning point preset in the mobile terminal device or the arrival time is exceeded.

[0007]

【Example】

Example 1. Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a train 2 traveling in the arrow direction runs on a track 1 of a railway. A leaky coaxial cable 5 for data transmission with the train 2 is laid along the track 1. An on-board device 3 for calculating traveling distance and traveling speed data is mounted on the running train 2, and an on-board antenna 4 for transmitting data to the leaky coaxial cable 5 is connected.

At the construction site on the ground, a leaky coaxial cable 5
There is a mobile terminal device 6 that receives data from the train 2 via the mobile terminal device 6, and the mobile terminal device 6 includes a terminal antenna 7, a data transmission unit 8, an operation unit 9, a control unit 10, a display unit 11, and an alarm unit 12. Has been done.

Next, the operation will be described. When the portable terminal device 6 inputs the kilometer of the construction site from the operation unit 9 and requests the running train data, the running train 2 travels the current traveling distance of the train 2 via the leaky coaxial cable 5, The running speed is received as train data. The control unit 10 calculates the distance and time for the approaching train 2 to reach the construction site in real time from the train data received by the data transmission unit 8 and the input distance of the construction site in kilometers. The calculated result is displayed in real time on the display unit 11, and when the evacuation allowable time of the construction worker set in the mobile terminal device 6 in advance is reached, the alarm unit 12 outputs an approach alarm and interrupts the work. And encourage evacuation to a safe place.

Embodiment 2. In the above embodiment, the orbit 1
Although the case where one train 2 traveling upward and one set of mobile terminal devices 6 are associated with each other has been shown, data transmission with all the trains 2 existing in the range where the leaky coaxial cable 5 is laid by the mobile terminal device 6 is performed. It goes without saying that it is also possible to make it possible to confirm the on-rail position of all trains 2, the distance to the current position, and the estimated arrival time.

Embodiment 3. In addition, as shown in FIG. 1, the kilometer of the current position input from the mobile terminal device 6 is transmitted to the on-board device 3 of the running train 2 via the leaky coaxial cable 5,
The on-board device 3 can also display the construction work point on the cab display 3a based on the distance data from the mobile terminal device 6 on the ground to provide the driver with caution information.

Embodiment 4 FIG. Further, in the above embodiment, the one in which the current position to the mobile terminal device 6 is keyed in is shown.
It is also possible to input a bar code sticker, which is attached along a soundproof wall or the like of a railroad track, and which codes the value of a kilometer by a bar code. As a result, track maintenance work, etc.
It is possible to accurately enter the value in kilometers even when moving between work locations. An example is shown in FIG. In FIG. 2, 13 is a bar code reader, and 14 is a bar code seal attached along a line at a position of a predetermined distance x. The barcode sticker 14 is printed by converting the kilometer value into a bar code, which is read by the bar code reader 13 attached to the mobile terminal device 6 to automatically determine the kilometer value.

The train on-board device, the on-board antenna, and the leaky cable shown in the above embodiments are usually already installed as a train information transmission system or a train operation management system. Often there is no need to install a new alarm device.

[0014]

As described above, according to the present invention, the leaking coaxial cable laid along the track is used to input data from the train and calculate the position of the train approaching the construction site. It is possible to confirm the approach of a train regardless of the location and topography, and it is possible to ensure the safety of workers.

As a method of confirming the approach of the train, (1) the arrival distance to the construction site position and the estimated arrival time are displayed on the display unit of the portable terminal device. (2) When the train approach limit time is exceeded, the mobile terminal device outputs an alarm. (3) The construction site position is displayed on the cab display of the train to provide the driver with caution information. be able to.

Further, the distance about a kilometer at the construction site is automatically determined by coding the distance about a kilometer installed along the railroad track and reading the bar code sticker with a bar code reader provided in the portable terminal device. be able to.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a train approach warning device according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a train approach warning device according to another embodiment of the present invention.

[Explanation of symbols]

1 track 2 train 3 on-board device 3a driver's cab display 4 on-board antenna 5 leaky coaxial cable 6 mobile terminal device 7 terminal antenna 8 data transmission unit 9 operation unit 10 control unit 11 display unit 12 alarm unit

Claims (7)

[Claims] 1. A train approach alarm device that detects approach of a train and gives an alarm by a leak coaxial cable that is laid along a track on which the train runs and that transmits and receives data of an on-board device of the train. A mobile terminal device for transmitting and receiving data to and from a train onboard device via the leaky coaxial cable, the mobile terminal device via the leaky coaxial cable,
A train approach warning device, which is configured to detect the approach of a train by transmitting data to an on-board device of the train. 2. The train approach warning device according to claim 1, wherein the mobile terminal device is a portable type and is composed of a data transmission unit, an antenna, a display unit, an operation unit, a control unit, and an alarm unit. 3. The data transmitted from the on-board device of the train are train travel distance and travel speed, and the mobile terminal device is
By inputting the kilometer of the current position, which is the kilometer of the construction site, from the operation unit, the in-rail position of the train and the reachable distance to the current position are calculated according to the traveling distance, traveling speed, and kilometer of the current position. The train approach warning device according to claim 1, wherein the estimated arrival time is calculated and displayed on the display unit of the mobile terminal device. 4. The train approach warning device according to claim 1, wherein the portable terminal device is configured to output an alarm and call attention when the approach limit time is exceeded. 5. The mobile terminal device performs data transmission with all trains existing in the area where the leaky coaxial cable is laid,
The train approach warning device according to claim 1, wherein the train approach warning device is configured to be able to confirm the on-rail position of all trains, the distance to the current position, and the estimated arrival time. 6. The kilometer of the current position input from the mobile terminal device is transmitted to the on-board device of the running train via the leaky coaxial cable, and the on-board device is the distance from the on-ground mobile terminal device. The train approach warning device according to claim 1, wherein the construction work point is displayed on the driver's cab based on the schedule data to provide the driver with caution information. 7. The kilometer at the current position input to the mobile terminal device is a bar code seal installed at a predetermined distance along the track, and the coded kilometer value is input using a bar code reader. The train approach warning device according to claim 1, wherein the train approach warning device is configured to: