JPH06227396A - Automatic train control device - Google Patents

Abstract

(57) [Summary] [Purpose] The train detection signals used in each track circuit are used in a time-division manner, and ATC information is continuously applied to the track circuit where the train is detected until the train advances. Thus, the hardware configuration is simplified. A plurality of applying means for applying a track circuit identification signal and a train control signal to the rails of each track circuit for each of a plurality of track circuits formed by dividing the rail into predetermined lengths, A plurality of train detection means provided for each track circuit for detecting the entrance of a train into each track circuit or the advance of a train from the track circuit, and each train detection means are related to the train detection means. Until the entry of the train into the track circuit is detected and when the advance of the train from the track circuit is detected, the applying means relating to the track circuit applies the track circuit identification signal in a time division manner, and the track circuit The application means comprises a plurality of switching means provided for each track circuit for switching the train control signal to be continuously applied while detecting the entrance of the train into the train.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic train control device, a so-called ATC device, and more particularly to a device for simplifying the device by using signals applied to a plurality of track circuits in a time division manner.

[0002]

2. Description of the Related Art Conventionally, an ATC device divides a rail into predetermined lengths to form a block section, and a rail forming the block section constitutes a track circuit as a part of a transmission line. At the same time, the train control signal is applied to the starting side of the rail (the side where the train advances).

On the other hand, a train running on a rail is provided with a train car (antenna) for receiving a train control signal from the rail and a receiver for processing a signal input through the antenna. The train control signals from the ground are decoded and used for train control.

In applying the above-mentioned train control signal,
Carrier waves having different frequencies are used in order to avoid interference with the signals of the track circuits that follow each other.

[0005]

However, since the above-mentioned conventional ATC device uses carrier waves having different frequencies for each track circuit, each track circuit has a different hard construction, resulting in an increase in cost. There was a flaw.

Therefore, the present invention has been made to solve the above-mentioned drawbacks, and an object thereof is to detect a train by using a time-divided signal, and the train is detected in the track circuit. An object of the present invention is to provide an automatic train control device capable of realizing an ATC device at low cost by continuously supplying a train control signal until the advance.

[0007]

In order to achieve the above-mentioned object, an automatic train control device according to the present invention provides a track circuit for each of a plurality of track circuits formed by dividing a rail into a predetermined length. A plurality of applying means for respectively applying the identification signal and the train control signal to the rails of each track circuit, and detecting the entrance of the train into each track circuit or the advance of the train from the track circuit, each track A plurality of train detection means provided for each circuit, and until each train detection means detects the entry of a train into the track circuit related to the train detection means, and when the advance of the train from the track circuit is detected. , The applying means relating to the track circuit applies the track circuit identification signal in a time division manner, while detecting the entrance of the train into the track circuit,
The applying means is characterized by having a plurality of switching means provided for each track circuit for switching to continuously apply the train control signal.

[0008]

In the above construction, when the train detection means detects the entrance of the train into the track circuit associated with the switching means, each switching means applies the time to the rail of the track circuit via the application means in a time division manner. Until then, instead of the track circuit identification signal,
Train control signals are continuously applied until the train advances from the rail. Then, when the train detection means detects the advance of the train from the track circuit, the application means again causes the switching means to apply the track circuit identification signal to the rail in a time division manner.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment. Ray
The rule R is divided by a well-known insulating means such as an impedance bond, and a block section is formed for each section, and a plurality of the divided rails are used as a part of an electric circuit. Track circuits T1 to T5 are constructed. In the illustrated example, the number of track circuits is five in order to simplify the description.

Transmitters a1 to a5 are provided at the start ends of the rails R of the track circuits T1 to T5, respectively, and the end ends of the rails R (the side where the train enters) are provided. , Receivers b1 to b5 (b5 is not shown) are provided respectively.

The train Y traveling on the rail R is equipped with an on-board receiver c for receiving a signal from the rail R via the antenna A and processing the received signal.

FIG. 2 is a block diagram showing the electrical configuration of the transmitter a1 for the track circuit T1 and another track circuit T2.
Since the electrical configurations of the transmitters a2 to a5 of .about.T5 are the same as that of the transmitter a1, the transmitter a1 will be described as a representative.

The transmitter a1 has track circuit identification information (hereinafter referred to as T1 information) which is generated from an information generating circuit (not shown) and is composed of digital information of the track circuit T1 and train A exists in the track circuit T1. In the meantime, a switching circuit (corresponding to the switching means of the present invention) 10 for selectively selecting and outputting train control information (hereinafter referred to as ATC information) for the train A, and an output from the switching circuit 10. A well-known coder 11 for converting a carrier wave (f0) into a serial transmission data format and a carrier wave (f0) from a carrier wave generation circuit 12 for generating a carrier wave (f0) of a predetermined frequency are input through a distribution circuit 13, A well-known modulation circuit (FSK) 14 that modulates the output of the coder 11 and an amplification circuit that amplifies the modulated output from the modulation circuit 14 and applies the amplified output to the leading end side of the rail R (the present invention). Applicable to applying means That.) And a 15.

The switching circuit 10 selectively outputs the T1 information and the ATC information in response to the signal from the receiver b1, and the distribution circuit 13 outputs the distribution circuit 13 of the other track circuits T2 to T5. The carrier wave (f0) is supplied to the modulation circuit 14 of each track circuit T1 to T5 in a time division manner in synchronization with the carrier wave (f0) while the signal (train detection output signal) from the receiver b1 is present. ) Is continuously supplied.

FIG. 3 is a block diagram showing the electrical construction of the receiver b1 for the track circuit T1 and another track circuit T2.
.About.T5 receivers b2 to b5 have the same electrical configuration as receiver b.
It has the same configuration as 1. Therefore, here, the receiver b
Description will be made on behalf of 1.

The receiver b1 includes an amplifier circuit 20 for amplifying a signal input from the terminal end of the rail R, and the amplifier circuit 20.
A bandpass filter 21 for filtering the output from the
A known signal processing circuit (DEM) 22 including a demodulation circuit and the like
And a decoder 23 for decoding the T1 information from the output from the signal processing circuit 22. Also,
This receiver b1 is provided with an orbit relay TR which is lifted up while the T1 information is being decrypted and which falls when the T1 information is no longer decrypted. The switching circuit 10 and the distribution circuit 13 are configured to be switched.

FIG. 4 is a block diagram showing the electrical construction of the on-vehicle receiver c, and this construction is basically the same as the above-mentioned receiver b1 provided on the ground. That is, the onboard receiver c includes an amplifier circuit 30 for amplifying a signal input from the rail R via the antenna A, a bandpass filter 31, a signal processing circuit 32, and a decoder 33. It consists of In addition, this decoder 33 is a transmitter a1.
While applying the T1 information to the rail R, its ATC
It is configured to decrypt the information.

The operation of the apparatus of this embodiment will be described below with reference to the time charts of FIGS. First, the case where the train A does not exist in the track circuits T1 to T5 will be described.

Switching circuits 10 for the track circuits T1 to T5
Outputs T1 to T5 information to each coder 11 on the condition that there is no train B in each track circuit T1 to T5. That is, each switching circuit 10 has a track relay TR
Is output, the T1 to T5 information is output to each coder 11.

On the other hand, the distribution circuit 1 of each track circuit T1 to T5
3, the synchronization signal is taken and the carrier wave (f0) is supplied to each modulator 14 in a time division manner. Therefore, as shown in FIG. 5, each modulator 14 performs a time division operation in T1 to T5. Modulated signals (f0-T1) to (f0-T5) based on information are output.

Therefore, the receivers b1 to b5 of the track circuits T1 to T5 decode the T1 to T5 information and enhance the track relay TR as described above.

Next, the case where the train B enters the track circuit T2 will be described. In this case, the train a can decode the T2 information via the on-board receiver c, and can know the position of the train. Therefore, this T2 information can be provided for in-vehicle broadcasting or the like.

When the train a enters the track circuit T2, the rail R is shorted by the axles (wheels) of the train a, and the T2 information previously received by the receiver b2 is lost. Therefore, the track relay TR of the receiver b2 drops, and the switching circuit 10 replaces the T1 information and ATC via this drop contact.
The information is output to the coder 11.

Therefore, the train control signal (f0-AT) based on the ATC information is provided at the starting end of the rail R of the track circuit T2.
C) is applied (see FIG. 6). Therefore, the track circuit T
Train A on the 2nd is AT after the T2 information from the decoder 33.
The C information will be decoded. The decrypted ATC information is used for controlling train A like the well-known ATC device.

Train A moves from track circuit T2 to track circuit T1.
At the time of approaching, the short circuit of the rail R of the track circuit T2 is released, so that the track relay TR again rises, and T2 is restarted.
Information is received. On the other hand, ARC information is applied to the track circuit T1 instead of the T1 information up to that point.

As described above, in the present embodiment, the carrier waves used in the track circuits T1 to T5 are the same, and the track circuits T1 to T5 are used in a time division manner.
It is possible to manufacture the device at a low cost because the configuration of the battery is simplified.

In the above-mentioned embodiment, the track circuits are grouped into five and the train detection signals used in this group are time-divided, but five or more track circuits may be used. Further, by synchronizing the train detection signals of the preceding and following groups, it is possible to use carrier waves of the same frequency. Further, the track circuits T1 to T5 are insulation type, but may be non-insulation type.

[0028]

The automatic train control device according to the present invention has the structure described in the claims, that is, the train detection signal used in each track circuit is time-divided and used for the track circuit detected by the train. Is ATC continuously until trains advance
Since the information is applied, the hardware configuration is simplified and the production can be performed at low cost.

[Brief description of drawings]

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

FIG. 2 is a block diagram showing an electrical configuration of a transmitter.

FIG. 3 is a block diagram showing an electrical configuration of a receiver.

FIG. 4 is a block diagram showing an electrical configuration of an on-vehicle receiver.

FIG. 5 is a time chart showing a control operation.

FIG. 6 is a time chart showing a control operation.

[Explanation of symbols]

 a1 to a5 transmitter b1 to b5 receiver c on-board receiver a train 10 switching circuit (switching means) 13 distribution means (carrier supply means) 14 modulation circuit (signal generation means) 15 amplification means (application means)

Claims (1)

[Claims] 1. A plurality of applying means for applying a track circuit identification signal and a train control signal to the rails of each track circuit for each of a plurality of track circuits formed by dividing the rail into a predetermined length. And a plurality of train detection means provided for each track circuit that detects the entrance of a train to each track circuit or the advance of a train from the track circuit, and each train detection means is the train detection means. Until detecting the entrance of the train into the track circuit according to the above and when detecting the advance of the train from the track circuit, the applying means according to the track circuit applies the track circuit identification signal in a time division manner, While detecting the entrance of the train into the track circuit, the applying means switches so as to continuously apply the train control signal, and has a plurality of switching means provided for each track circuit. Automatic train characterized by Control device.