JPH04314217A - Train communication equipment - Google Patents

Abstract

PURPOSE:To attain high density running of trains and to reduce a time interval between trains. CONSTITUTION:A transmitter-receiver 1a acts like a transmitter for an incoming line R1 and acts like a receiver for an outgoing line R2, and on the other hand, a transmitter-receiver 1b acts like a receiver for the incoming line R1 and acts like a transmitter for the outgoing line R2. Thus, a train control signal from the transmitter-receiver 1a is sent to up trains T1, T2 in a track circuit A via rails r2, r3 and a train control signal from the transmitter-receiver 1b is sent to a down train T3 via the rails r2, r3. Moreover, since a preceding train sends a preceding train position data to the rails r2, r3 via a transmission reception antenna based on a signal of a tachogenerator G, the running of trains is attained by allowing a succeeding train to fetch the position data of the preceding train. Thus, two trains T1, T2 are entered in the same track circuit A of the incoming line R1 and the time interval reduction running is attained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train communication device, and more particularly to one that can contribute to shortening train operating time intervals.

0002

[Prior Art] Conventionally, as shown in FIG. 4, a train communication device usually divides a rail (track) r into a predetermined length to form a track circuit A, and the starting end side of the track circuit A is A transmitter 10 for transmitting a signal at a predetermined frequency is provided at the track circuit A, and a receiver 20 is provided at the terminal end of the track circuit A. Therefore, when there is no train on this track circuit A, a circulating signal current flows between the pair of rails r extending from the starting end to the terminating end, as shown in FIG. 4(a).

As shown in FIG. 4(b), when a train T1 enters this track circuit A from the terminal side, the axle of the train T1 short-circuits the pair of rails r, causing the train T1 and The signal level of rail r on the terminal side decreases. Therefore, the receiver 20 can detect that the train T1 is located in the track circuit A from the decrease in the signal level. Further, the signal sent from the transmitter 10 is transmitted to the train T1.
In the case of a system that includes control data for train T
1, and the received signal can be used for train control.

0004

[Problems to be Solved by the Invention] However, in the conventional train communication device described above, when the signal sent from the terminal side of the track circuit is short-circuited at the axle of the train, there is no signal from the axle to the terminal side. As a result, a following train cannot enter into the track circuit where there is no signal, resulting in the inconvenience that high-density train operation is not possible. That is, as shown in FIG. 4(b), when the train T1 is entering the track circuit A, there is no signal between the train T1 and the terminal, so the following train T2 is not allowed to enter the track circuit A. I couldn't get it in. Therefore, conventional train spacing control is performed on the principle that a track circuit is a block section and that only a single train is allowed to enter a block section.

[0005] In order to shorten the train interval using such a fixed block section system, it is necessary to shorten the length of the block section. However, if the block section is shortened, the number of track circuits will increase accordingly, and equipment such as transmitters and receivers will be required for each track circuit, resulting in an increase in equipment costs. For this reason,
Simply shortening the block section is not a good idea as a means of shortening the time interval.

[0006] Therefore, the present invention has been made to solve the above-mentioned drawbacks, and its purpose is to provide a train transmission system that can send signals to following trains and contribute to shortening time intervals. The goal is to provide equipment.

[0007]

[Means for Solving the Problems] In order to achieve the above object, the system of the present invention includes a track circuit formed by dividing two lines, such as an upper line and a lower line, into predetermined lengths, and one end of the track circuit. Either one of the rails, which is provided on one side and the other end side and forms one of the two rails, and the second rail
It is provided between one of the two rails forming the other track, and sends signals to trains running on the two tracks, or transmits signals from trains running on the two tracks. The device is characterized by having a transmitter/receiver that receives signals. In addition, the transmitter/receiver is provided at one end and the other end of the track circuit, and between all the rails on one of the two tracks and all the rails on the other track of the two tracks. It is characterized by the fact that it is provided.

[0008]

[Operation] In the above configuration, a train control signal is sent from the transmitter/receiver between one rail of one track or one of the rails of the other track and one of the rails of the other track or the other track. Then, both tracks become a communication circuit, and trains on both tracks can receive the signals. Furthermore, when a signal is sent from the train to the ground side, the signal is input to the transmitter/receiver via the communication circuit.

[0009]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. 1 and 2 are schematic configuration diagrams of a train communication device according to an embodiment, and the same components as those in FIG. 4 described above are given the same reference numerals.

[0010] The transmitters 1a and 1b, like well-known train control transmitters/receivers, generate predetermined serial data for train control, and also transmit the generated serial data using a carrier wave to correspond to the serial data. FSK (freq
It is configured to be able to modulate a signal (shift keying) or demodulate a signal transmitted from the train to the ground side, and is connected between the inner rails r2 and r3 of the upper and lower tracks R1 and R2. Therefore, when the transmitter/receiver 1a has the function of a transmitter and the transmitter/receiver 1b has the function of a receiver, the rails r2 and r3 are A signal current flows as a communication circuit. Also, these rails r2, r
A signal current is transmitted to either transmitter/receiver 1a or 1b which functions as a receiver using 3 as a communication circuit.

[0011] Each train (three trains in the illustrated example) T1, T2
, T3 is equipped with a signal processor 2. As shown in FIG. 2, this signal processor 2 is connected to each train T1 to T3.
A transmitting/receiving antenna 3 provided on the traveling direction side of the transmitting/receiving antenna 3,
An amplifier circuit 4a that amplifies the signal received by the receiving antenna 3 from the rails r2 and r3, a demodulation circuit 4b that demodulates the amplified signal, demodulated data, that is, serial data, and a speed generator G provided on the axle W. A control circuit 5 receives pulse signals from the speed generator G, and inputs the train number data of the own train. a signal generation circuit 6 that generates and processes the position data of the own train necessary for controlling the following train (T2 in the illustrated example); a modulation circuit 7a that modulates the generated signal into an FSK signal;
It is composed of an amplifier circuit 7b that amplifies the K signal.

Next, the communication control operation of the device of this embodiment will be explained. Now, the transmitter/receiver 1a has the functions of a transmitter with respect to the upline line R1 and a receiver with respect to the downline line R2, while the transmitter/receiver 1b has the functions of a receiver with respect to the upline line R1 and a receiver with respect to the downline line R2. It has the function of a transmitter, and both transmitter/receivers 1a and 1b are configured to function as a transmitter and a receiver in a time-sharing manner.

Therefore, train control signals from the transmitter/receiver 1a are transmitted to the up trains T1 and T2 in the track circuit A via the rails r2 and r3, and on the other hand,
A train control signal from the transmitter/receiver 1b is transmitted to the down train T3 via rails r2 and r3. Also,
The preceding train transmits preceding train position data based on the signal from the speed generator G to the rail r2 via the receiving antenna 3.
, r3, the following train can take in the position data of the preceding train and operate the train. Therefore, for example, two trains T1 and T2 can enter into the same track circuit A of the uphill track R1 in FIG. 1, making it possible to operate with shortened time intervals.

FIG. 3 shows another embodiment of the present invention, which differs from the above embodiment in that the transmitter/receiver 1a,
1b is provided between the upper and lower lines R1 and R2. That is, both transmitter/receivers 1a and 1b are connected to both lines R.
1 and R2 are connected in a short-circuited state. Therefore, the transmission/reception of signals between the transmitting/receiving antenna 3 of each train T1 to T3 and the transmitting/receiving devices 1a, 1b is performed by the rail r1.
, r2 and r3, r4, so
It becomes possible to receive and receive signals more accurately.

In the above embodiment, the transmitter/receiver 1a, 1b is provided at one end of the track circuit A, and the transmitter/receiver 1b is provided at the other end of the track circuit A. A receiver is provided at the other end, and the transmitter sends train control signals to each train on the upper and lower tracks R1 and R2.
Further, the receiver may be configured to be able to receive signals from each train on the upper and lower tracks R1 and R2. Therefore, when referring to a transmitter/receiver in the present invention, it must be understood that such a case is also included. Further, although the rails forming the communication circuit are the upper and lower tracks R1 and R2, they may be a single track, a lead-in track installed in parallel to the single track, or the like.

[0016]

Effects of the Invention: The train communication device according to the present invention forms a communication circuit with two tracks, such as an upper track and a lower track, and communicates with the train via this communication circuit, so that it is possible to communicate with the train using the same track. Even if there are multiple trains within a train, you can communicate with each train.
Therefore, it is possible to contribute to shortening the time interval.

[Brief explanation of drawings]

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

FIG. 2 is a block diagram of a signal processor.

FIG. 3 is a schematic configuration diagram of a train communication device according to another embodiment of the present invention.

FIG. 4 is an explanatory diagram of a conventional block section method.

[Explanation of symbols]

1a, 1b Transmitter/receiver 3 Transmitting/receiving antenna r1 ~ r4　　　Rail T1-T3 Train R1, R2 track

Claims (2)

[Claims] 1. A track circuit formed by dividing two lines, such as an upper line and a lower line, into predetermined lengths, and a track circuit provided at one end and the other end of the track circuit, respectively, and one of the two lines. It is installed between one of the rails forming one of the two tracks and one of the rails forming the other track of the two tracks, and sends signals to trains running on the two tracks. , or a transmitter/receiver that receives signals from a train running on the two tracks. [Claim 2] The transmitter/receiver is provided at one end and the other end of the track circuit, and is connected to all rails on one of the two tracks and all rails on the other track of the two tracks. 2. The train communication device according to claim 1, wherein the train communication device is provided between the train communication device and the train communication device.