JPH08223710A - Train information transmitter - Google Patents

Abstract

PURPOSE: To enhance the noise resistance by transmitting the number of tracks by an analog signal up to a preceding train. CONSTITUTION: The train detection signal transmitters TDS1 to TDS6 of a ground unit generate train detection signals of different modulation frequencies of track circuits 1T to 6T from the advancing side. The transmitteers TDS1 to TDS6 of the ground unit refers to the number of track circuits transmitted from the train position receiver TIR of track circuits 0T to 5T adjacent to the advancing side to generate the train position signals of the two frequencies responsive to the number of the track circuits to the train 2. The information deciding unit 14 of a train unit judges the distance from the own train 1 to the preceding train 2 based on the train detection signal, the train positionn signal and the length of the track circuit stored previously in a track memory 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a train information transmission device for sending train control information from the ground to a train to determine a distance to a train ahead.

[0002]

2. Description of the Related Art In recent years, a method has been developed for determining the speed limit for each train based on the position of the train ahead and the distance to the train ahead. Here, the information such as the position of the front train, the distance to the front train, and the position of the own train is converted into binary numerical data, and the converted information is collected in one frame which is one transmission unit and is FSK. Serial transmission is performed by a communication method using modulation means such as. During this serial transmission, frame inspection and received data rationality inspection are performed to improve data reliability and error detection.

[0003]

However, in the above transmission, one frame is transmitted due to noise or the like during one frame transmission.
If the information becomes defective even for bits, all the information for one frame cannot be used. That is, the noise for a minute time makes it impossible to use data for a certain fixed time which is several times or more. This loss of information is unavoidable and becomes more remarkable as the number of information in one frame increases. In order to deal with this loss of information, it takes a lot of time to transmit the information, and the time length of the device becomes long, resulting in an increase in the free running distance.

The present invention has been made to solve the above disadvantages, and it is possible to judge the distance to the front train by transmitting and receiving information such as the position of the front train by an analog signal having high noise resistance. It is intended.

[0005]

A train information transmission apparatus according to the present invention includes a ground device and an on-board device, and the ground device includes a train detection signal transmitter TDS, a train detection signal receiver TDR, and a train position transmitter TIS. And a train position receiver TIR,
The train detection signal transmitter TDS transmits a train detection signal, is provided on the advancing side of each track circuit 1T to 6T, and generates a train detection signal modulated with a different modulation frequency for each track circuit 1T to 6T, The train detection signal receiver TDR receives the train detection signal transmitted by the train detection signal transmitter TDS, is provided on the approach side of each track circuit 1T to 6T, and each track circuit depends on the presence or absence of the received train detection signal. 1T
The train position transmitter TIS detects whether or not the trains 1 and 2 are on the train up to 6T, and the train position transmitter TIS uses the track circuits 0T to 5T
Train position signals according to the number of track circuits up to, and train position receivers T of track circuits 0T to 5T provided on the advancing side of each track circuit 1T to 6T and adjacent to the advancing side.
2 according to the number of track circuits from 0T to 5T on which trains 1 and 2 are located by referring to the number of track circuits sent from IR
Train position receiver TIR for generating analog signal of frequency
Is a train position signal transmitted by the train position transmitter TIS, and is provided on the approach side of each track circuit 1T to 6T, and a track circuit in which the train is located from an analog signal of two frequencies of the received train position signal. The number of track circuits from 0T to 5T is detected and sent to the train position transmitter TIS of the track circuit adjacent to the approach side.

Further, the on-board device is a train detection signal discriminator 1.
1, a train position discriminator 12, a track storage unit 13, and an information determination unit 14, and the train detection signal discriminator 11 includes each track circuit 1T.
The track circuit 1T on which the train 1 is located based on the received train detection signal.
~ 6T is detected, and the train position discriminator 12 detects each track circuit 1T.
The train position signal transmitted to 6T is received, the number of track circuits up to the front train 2 is detected based on the received train position signal, and the track storage unit 13 preliminarily determines the length of each track circuit 1T to 6T. The information determination unit 14 stores the number of track circuits up to the front train 2 detected by the train position discriminator 12, and the track circuit 1T on which the train 1 detected by the train detection signal discriminator 11 is located.
Based on 6T and the length of each track circuit stored in the track storage unit 13, the distance from the own train 1 to the front train 2 is determined.

[0007]

According to the present invention, the train position and the number of tracks to the preceding train are transmitted using an analog signal which is continuous and has a high noise resistance without affecting the information transmission function even if a minute portion of the signal is lost. .

The train detection signal transmitter TDS of the ground equipment is provided with track circuits 1T to 6T from the advancing side of the track circuits 1T to 6T.
A train detection signal modulated with a different modulation frequency is generated for each, and the track circuits 1T to 6T are distinguished by the modulation frequency.

Further, the train position transmitter TIS of the ground equipment
From the advancing side of each track circuit 1T to 6T,
2 to 6T according to the number of track circuits 0T to 5T on which trains 1 and 2 are located by referring to the number of track circuits sent from the train position receivers TIR of track circuits 0T to 5T adjacent to the advancing side of 6T Each track circuit 1 that generates an analog signal of frequency
The number of track circuits up to the train ahead is clarified every T to 6T.

Further, the train determination signal discriminator 11 detects the train detection signal transmitted from the train detection signal discriminator 11 to each of the track circuits 1T to 6T at different modulation frequencies from the train detection signal 14 of the on-board device.
The track circuits 1T to 6T on which the train is located and the train position discriminator 12
Of the track circuits up to the front train 2 detected from the train position signals transmitted to the track circuits 1T to 6T, and the track storage unit 1
The distance from the train 1 to the front train 2 is determined based on the length of each track circuit stored in advance in 3.

[0011]

1 is a block diagram of a train information transmission device showing an embodiment of the present invention. The train information transmission device includes a ground device and an on-board device. The ground equipment is the train detection signal transmitter T
DS1 to TDS6 and train detection signal receivers TDR0 to TD
It has R6, train position transmitters TIS1 to TIS6 and train position receivers TIR0 to TIR6.

Train detection signal transmitters TDS1-
The TDS 6 transmits a train detection signal (hereinafter referred to as "TD signal"), and is provided on the advancing side of each track circuit 1T to 6T. Train detection signal transmitter T of ground equipment
The DS1 to TDS6 transmit TD signals modulated with different modulation frequencies to the track circuits 1T to 6T to the track circuits 1T to 6T. Train detection signal receivers TDR1 to T of ground equipment
The DR6 detects whether or not the trains 1 and 2 are on the track circuits 1T to 6T by detecting the presence or absence of the train detection signals transmitted by the train detection signal transmitters TDS1 to TDS6. It is provided on the entry side of the circuits 1T to 6T. Here, since the frequencies of the adjacent track circuits are different from each other, even if the rail insulation is broken, the train detection signal receivers TDR1 to TDR6 of the ground equipment are connected to the T of the adjacent track circuits.
It is possible to prevent receiving the D signal and determining that there is no train.

Train position transmitters TIS1 to TI of ground equipment
S6 transmits a train position signal (hereinafter referred to as "TI signal") that represents the number of track circuits from 0T to 5T on which the front train 2 is located by a combination of two types of signals TM and TS. , Is provided on the advancing side of each track circuit 1T to 6T. Here, for example, the signal TM and the signal T
The modulation frequencies of _S are 6 of f _{M1 to} f _M6 and f _{S1 to} f _S6 , respectively.
If there are types, there are 36 combinations of the signal TM and the signal TS. When a numerical value is assigned to each combination of the signal TM and the signal TS, numerical information from "1" information to "36" information can be transmitted, for example, as shown in the frequency allocation diagram of FIG. In this numerical information, for example, as shown in the explanatory view of FIG. 3, “1” information indicates that the forward train is on the track circuit 0T to 5T immediately before, and “2” information is 2 tracks ahead ahead. Indicates that the train is on the line. That is, the number of track circuits up to the front train 2 can be represented by numerical information represented by the combination of the two types of signals TM and TS. Specifically, the train position transmitters TIS1 to TIS6 are train detection signal receivers TDR0 to TDR5 of the track circuits 0T to 5T adjacent to the train advancing side and trains 1 on the track circuits 0T to 5T adjacent to the train advancing side. When the trains 1 and 2 are on the track circuits 0T to 5T adjacent to the train advancing side in response to the presence or absence of 2, the TI signal that combines the signals modulated by the frequency f _M1 and the frequency f _S1 is transmitted. . The train position transmitters TIS1 to TIS6 are train position receivers TIR0 to TIR5 of the track circuits 0T to 5T adjacent to the train advancing side when the trains 1 and 2 on the track circuits 0T to 5T adjacent to the train advancing side are not present. Transmits a TI signal representing the number of track circuits obtained by adding "1" to the number of track circuits up to the front train 2 indicated by the received TI signal. Each train position receiver TIR1
~ TIR5 receives the train position signals transmitted from the train position transmitters TIS1 to TIS5 when the trains 1 and 5 are not on the track circuits 1T to 5T, and the received train position signals are adjacent to the train entry side. Which is transmitted to the train position transmitters TIS2 to TIS6 on the track circuits 2T to 6T,
It is located on the train entry side of each track circuit 1T to 5T. Thereby, each track circuit 1T-6T can know the number of track circuits up to the front train 2.

The on-board device includes a train detection signal discriminator 11 (hereinafter, the train detection signal discriminator of the on-board device is referred to as a "TD discriminator") and a train position discriminator 12 (hereinafter, train position discrimination of the on-board device). Device is called "TI discriminator") and trajectory storage unit 1
3 and the information determination unit 14. The TD discriminator 11 includes train detection signal transmitters TDS1 to TDS for each track circuit 1T to 6T.
The TD signal transmitted from 6 is received, and the track circuits 1T to 6T in which the train 1 is located are detected based on the received TD signal. The TI discriminator 12 receives the TI signals transmitted from the train position signal transmitters TIS1 to TIS6 of the track circuits 1T to 6T, and detects the number of track circuits up to the front train 2 based on the received TI signals. The orbit storage unit 13 has each orbit circuit 1T.
The length of ~ 6T is stored in advance. The information determination unit 14 includes a track circuit in which the own train 1 is detected by the TD discriminator 11 and T
The distance from the train 1 to the front train 2 is determined based on the number of track circuits up to the front train 2 detected by the I discriminator 12 and the length of each track circuit stored in the track storage unit 13. In this way, it is possible to detect the track circuit in which the own train is located by the analog signal without combining the digital data of the numerical data of the distance from the own train 1 to the preceding train 2 and to combine the two kinds of signals TM and TS. It is possible to transmit the number of track circuits up to the front train 2 by using the TI signal.

First, the operation of the train information transmission apparatus having the above-mentioned configuration when detecting the track circuit in which the train 1 is located will be described.

The train is installed in the train advancing side of the track circuit 1T~6T terrestrial detection signal transmitter TDS1~TDS6 regardless of the presence or absence of a train, different modulation frequencies f _T1 ~f for each track circuit 1T~6T _The TD signal modulated by _T6 is transmitted to the train detection signal receivers TDR1 to TDR6 via the rail. The TD discriminator 11 installed in the own train 1 is the train detection signal transmitter TDS of the track circuit in which the own train 1 is located.
The TD signal is received from 1 to TDS6, and the track circuit in which the train 1 is located is detected based on the TD signal. For example, as shown in FIG. 2, the train 1 is located in the track circuit 6T, so the TD discriminator 11 receives the TD signal modulated by the modulation frequency f _T6 transmitted by the train detection signal transmitter TDS6. Here, the train detection signal transmitters TDS1 to TDS6 output TD signals having different modulation frequencies for the track circuits 1T to 6T, and the TD discriminator 11 receives the signal having the modulation frequency f _T6. It is detected that the train 1 is on the track circuit 6T. In this way, each track circuit 1T-6
Because the track circuit in which the own train 1 is in line is detected by receiving different TD signals for each T, for example, the track in which the own train 1 is in line without being affected even if the power is turned on again after a power failure. The circuits 1T to 6T can be detected.

Next, the operation of detecting the track circuit in which the own train 1 is located and the distance from the own train 1 to the front train 2 will be described.

For example, as shown in FIG. 1, when the forward train 2 is located in the track circuit 1T, the train position transmitter TIS2 of the track circuit 2T detects that the train 2 is located in the track circuit 1T from the train detection signal receiver TDR1. That is, for example, in FIG.
As shown in (1), an analog TI signal based on the combination of the modulation frequencies f _M1 and f _S1 indicating “1” information is output to the train position receiver TIR2 via the rail. When the train position transmitter TIS3 of the track circuit 3T receives the "1" information based on the combination of the modulation frequencies f _M1 and f _S1 , since the train is not present in the track circuit 2T, similarly, the modulation frequencies f _M1 and f S A TI signal indicating "2" information according to the combination of _S2 is output to the train position receiver TIR3. Similarly, when the train position receiver TIR3 receives "2" information, the train position transmitter TIS4 of the track circuit 4T sends a TI signal indicating "3" information by the combination of the modulation frequencies f _M1 and f _S3 to the train position receiver. Output to TIR4. Hereinafter, similarly, when the train position receiver TIR4 receives "3" information, the train position transmitter TIS5 of the track circuit 5T transmits a TI signal indicating "4" information by the combination of the modulation frequencies f _M1 and f _S4 to the train position. Output to the receiver TIR5. When the train position receiver TIR5 receives "4" information, the train position transmitter TIS6 of the track circuit 6T receives the modulation frequency f.
Train position transmitter / receiver T transmits TI signal by combination of _M1 and f _S5
Output to IR6.

Since the train 1 is located in the track circuit 6T, it receives analog signals of the modulation frequencies f _M1 and f _S5 from the train position transmitter TIS6 of the track circuit 6T. Modulation frequency f
_Since the analog signals of _M1 and f _S5 mean “5” information as shown in FIG. 2, the TI discriminator 12 detects that the front train 2 is located ahead of the “5” track. The information determination unit 14 of the train 1 receives from the TD discriminator 11 that the track circuit on which the train 1 is located is 6T, receives the number of track circuits from the TI discriminator 12 to the front train 2, and transmits to the front train 2. Know that there are track circuits 2T to 5T between. The information determination unit 14 calculates the distance to the front train 2 by reading the lengths of the track circuits 2T to 5T from the track storage unit 13 and adding them. Thus, even if the position of the front train 2 and the distance to the front train 2 are not directly obtained, the position of the own train, the number of track circuits of the front train, and the track length of each track circuit 1T to 6T between them can be calculated. Since it can be calculated by knowing, it can be transmitted as an analog signal without directly transmitting the numerical data. Since the analog signal is continuous, even if a minute portion of the signal is lost, the information transmission function is not affected and the noise resistance is improved.

Three types of analog signals TM, TS,
Since the TD is transmitted and received independently, each information can be transmitted simultaneously, and the transmission time is short.

Further, the train information transmission device is a conventional AT.
Since the function is different from the C device, but the configuration is almost the same, it is easy to inherit the conventional technique, and it is possible to reduce the cost and improve the reliability.

In the above embodiment, the train information transmission device is installed in the insulated circuit, but it may be installed in the non-insulated circuit. In the case of the insulated circuit, the carrier wave of the TD signal is basically one kind, but in the case of the non-insulated circuit, a plurality of carrier waves are used so that the necessary number of the receivers 4 on the vehicle side have the discrimination ability.

In addition, train position receivers TIR1 to TIR6
Instead of using, the train position transmitters TIS1 to TIS6 may be connected by cables to transmit information directly without using rails.

Further, when the number of stations is limited, information is obtained from the track circuit in the station. In this case, the T
The carrier wave of the D signal is changed in the station school, and the modulation frequency is associated with the station. Whether passing through a station or stopping at a station, the carrier frequency in the station is used to input the modulation frequency of the TD signal, and the station is known from the frequency. An accurate train position can be detected by this and the above-mentioned determination of the track circuit by the TD signal.

[0025]

As described above, according to the present invention, an analog signal which is a continuous signal and has a high noise resistance without affecting the information transmission function even if a minute portion of the signal is lost is used to detect a train detection signal and Since the train position signal is transmitted, the reliability is increased, the configuration can be simplified, and the free running distance can be shortened.

Since the train detection signal transmitter of the ground equipment generates the train detection signal modulated from the advancing side of each track circuit with a different modulation frequency for each track circuit, each track circuit can be distinguished by the modulation frequency. .

Further, the train position transmitter of the ground equipment refers to the number of track circuits transmitted from the advance side of each track circuit from the train position receiver of the track circuit adjacent to the advance side of each track circuit, and the train is on the track. The number of track circuits up to the front train is calculated for each track circuit by generating an analog signal of two frequencies according to the number of track circuits up to the track circuit. I can know.

Further, the train detection unit of the on-board device includes a track circuit in which the train is located, which is detected from the train position signal transmitted by the train detection signal receiving unit to each track circuit at different modulation frequencies, and a train position receiver. Based on the number of track circuits to the preceding train detected from the train detection signal sent to the track circuit and the distance from the train to the preceding train based on the length of each track circuit stored in the track storage unit in advance, Train speed can be controlled based on the distance to the train.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a frequency allocation diagram of the above embodiment.

FIG. 3 is an explanatory diagram showing a relationship between numerical information and train positions.

[Explanation of symbols]

 1 own train 2 preceding train 11 train detection signal discriminator 12 train position discriminator 13 track storage unit 14 information determination unit 0T to 6T track circuit TDS1 to TDS6 train detection signal transmitter TDR0 to TDR6 train detection signal receiver TIS1 to TIS6 train Position transmitter TIR0 to TIR6 Train position receiver

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Hanawa 1-6-5 Marunouchi, Chiyoda-ku, Tokyo Within East Japan Railway Company (72) Inventor Takashi Urushibata 2-29 Heian-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Address 1 Inside Kyosan Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. The ground equipment is a train detection signal transmitter (TD).
S), a train detection signal receiver (TDR), a train position transmitter (TIS) and a train position receiver (TIR), and the train detection signal transmitter (TDS) transmits a train detection signal, Train detection signals are provided on the advancing side of each track circuit (1T to 6T) and modulated by different modulation frequencies for each track circuit (1T to 6T), and the train detection signal receiver (TDR) transmits the train detection signal. The train detection signal transmitted by the device (TDS) is received, and it is provided on the entrance side of each track circuit (1T to 6T). Each track circuit (1T to 6T) is provided depending on the presence or absence of the received train detection signal.
The train position transmitter (TIS) detects whether or not the train (1, 2) is on the train line (T), and the train position signal according to the number of track circuits up to the track circuit (0T to 5T) on which the train is located. Of the track circuits (1T to 6T) provided on the advance side of each track circuit (1T to 6T) and adjacent to the advance side (0T to 5T).
The track circuit (0T) in which the train (1, 2) is located is referred to by referring to the number of track circuits sent from the train position receiver (TIR) of T).
The train position receiver (TIR) generates a train position transmitter (TIS) by generating analog signals of two frequencies according to the number of track circuits up to 5T).
The train position signal transmitted from the train track circuit (1T to 6T) is installed on the approach side of each track circuit (1T to 6T), and the track circuit (0T to 5T) in which the train is located is based on the two-frequency analog signals of the received train position signal. ) Is sent to the train position transmitter (TIS) of the track circuit adjacent to the approach side, and the on-board device is the train detection signal discriminator (11), train position discriminator (12) and track. Storage unit (13) and information determination unit (14)
The train detection signal discriminator (11) has each track circuit (1T to 6).
The train detection signal transmitted to T) is received, and based on the received train detection signal, the track circuit (1T to 6T) in which the own train (1) is located is detected, and the train position discriminator (12) The train position signal transmitted to the track circuit (1T to 6T) is received, and the number of track circuits up to the forward train (2) is detected based on the received train position signal, and the track storage unit (13) stores each track. The length of the circuit (1T to 6T) is stored in advance, and the information determination unit (14) is a track circuit (1T to 6T) in which the train (1) detected by the train detection signal discriminator (11) is present.
And the front train (2) detected by the train position discriminator (12)
To the forward train (2) based on the number of track circuits up to and the length of each track circuit stored in the track storage unit (13)
Train information transmission device characterized by determining the distance to.