JPS60237806A - Information transmitter - Google Patents

Abstract

PURPOSE:To obtain an information transmission system which has a simple system construction and high reliability by transmitting data when a position detection signal transmitted from the ground and a position detection signal on a train coincide. CONSTITUTION:When a train 1 enters closed sections 1T-nT, relays TR1-TRn of a train detector 8 are deenergized. An encoder 93 transmits information of an information generator 92 in response to a position signal of a train position detector 92 of a train device, not shown to loop antennas 31-3n provided at the entrance points of the sections 1T-nT. The train device reads out control information when train position information received by a train antenna and train position information detected by the own train position detector coincide with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to automatic train control devices (hereinafter referred to as ATC devices) and automatic train operation devices (hereinafter referred to as ATO devices).
The present invention relates to an information transmission device that transmits information between an on-board device installed on a train and a ground device installed on the ground.

Prior Art and its Problems In the conventional information transmission device of this type, when transmitting information from the ground to the train, the train number is used as key information, and this key information is received and deciphered on the train.

However, the information on the front blocked section, slope information, point information, route information, etc. required by the ATC device or the ATO device is often unrelated to the train number.

In addition, it is necessary to accurately correlate train numbers and train positions and keep track of them on the ground side, which requires a train tracking device on the ground side.

Purpose of the Invention The present invention solves the above-mentioned conventional problems, and provides an information transmission device that can configure an extremely reliable information transmission system with a simple system configuration for information transmission between the ground and onboard vehicles. The purpose is to provide

Structure of the Present Invention In order to achieve the above object, the present invention provides an information transmission device for transmitting information between a vehicle equipped on a train and a ground device provided on the ground. includes a device that detects and stores the running position of the own train, and the ground device includes a loop antenna installed at each entry point of each blocked section, and a train detection device that detects the train position for each blocked section. transmitting train position information from the ground device to the loop antenna based on the train detection signal from the train detection device, and transmitting the train position information received by the vehicle through the loop antenna and the on-board antenna. When the train position information matches the train position information stored in the two devices, the data is transmitted.

Embodiment FIG. 1 is a block diagram schematically showing the configuration of an information transmission apparatus according to the present invention. In the figure, 1 is a track, and 2 is a train running on track l.

Trajectory 1 has many closed sections I T -n T at appropriate intervals.
It is divided into. Loop antennas 31 to 3n are provided at each entry point of the closed section I T -n T. Each of the loop antennas 31 to 3n is connected to a coupler 4.
1 to 4n to a common signal line 51.52. The signal lines 51 and 52 are connected to the ground equipment 7 through the coupler 6.
I'm saying goodbye to the connection.

The ground device 7 is composed of a train detection device 8, an information transmitting section 9, and a receiving section IO. The train detection device 8 is a device that detects which block section of the block section IT-nT the train 2 has entered. Various types of train detection devices are known, but this embodiment shows a train detection method using an axle short circuit. It is configured to include a transmitter 81 that transmits a signal S from the boundary side, and a receiver 82 that receives a signal R on the rear blocking boundary side. FIG. 2 is a diagram showing a specific example thereof, in which each blockage section I T -
For the coil 83 provided at the front occlusion boundary of nT,
A signal S is transmitted from a transmitter 81, and a signal R sent through a trajectory l is transmitted to each blocked section 1. The receiver 82 receives the signal through a coil 84 provided on the rear occlusion boundary side of T-nT. When the train 2 enters the blocked section, its axle short-circuits the tracks 1- and 1, so the signal S transmitted from the transmitter 81 cannot be received by the receiver 82, and the signal S is connected to the output side of the receiver 82. The relay TR that was damaged will be restored. This detects that the train has entered the blocked section. TR1 to TRn in FIG. 1 are relays corresponding to each blockage section I T -n T, and TRLz-TR
n is the contact point, S t -S n is the closed section I T
-n T are the signals transmitted from the transmitter 81, and R1-Rn are the signals received by the receiver 82.

Next, the information transmitter 9 includes a train position detection trace W91, an information generator 92, an encoder 93, a modulator 94, and the like. The train position detection device 91 detects the blocked section into which the train I has entered and the time of entry into this blocked section. At the input end of the train position detection device 91, there are contacts TR1l-TR of the relays TR1 to TRn, which are the outputs of the train detection device 8.
Since nl is connected, it is possible to detect a blocked section of train entry depending on which contact among contacts TR4L-TRn has been restored. In addition, contacts TR11 to TRn
By detecting the recovery edge of L, it is also possible to detect when the vehicle enters the blocked section.

The output information generating device 92 is a part that generates ATO information, ATC information, etc. ATO information is, for example, ATC current information of a blocked section ahead of the blocked section where train l exists;
These include slope information, point information, course information, etc.

The encoder 93 encodes and transmits ATO information or ATC information corresponding to the train approach blocked section specified by the signal from the train position detection device 91, out of the information given from the output information generation device 92. For example, as shown in Figure 3, the encoding method is to add the address of the blocked section into which train l has entered (b) to the information (b), such as ATO information or ATC information, to be transmitted. Do it like this. The symbol (c) in FIG. 3 is synchronization information.

Furthermore, when the train 1 is located in a plurality of blocked sections, information on each blocked section is transmitted at appropriate time intervals. For example, if train l is entering blocked sections IT and 5T,
As shown in FIG. 4, information corresponding to the blocked sections IT and 5T is transmitted at time intervals t2.

The modulator 94 performs, for example, amplitude modulation on the encoded signal from the encoder 93 and outputs an information signal fl. information signal fz
is given to the signal line 51.52 through the switch 11 and the coupler 6, and further supplied from the signal line 51.52 to each of the loop antennas 31 to 3n.

The receiving section 10 includes a decoder 1oz, a decoder 102, an information confirmation section 103, and the like.

Next, the on-board device will be explained. FIG. 5 is a block diagram of the on-board device. In the figure, 12 is an on-board antenna;
3 is a receiving section, 14 is a transmitting section, 15 is a train position detection device,
16 is a switch. The receiving section 13 includes a demodulator 13z,
The information signal f1 received through the loop antennas 31 to 3n and the on-board antenna 12 is demodulated by the demodulator 131, and further included in the demodulated signal by the decoder 132. Decipher the information. The decoded information is output information part 13a
train number, ATO information, ATC information, etc.

The transmitter 14 includes an input information section 141, an encoder 142, a modulator 143, and the like. Input information section 1
In the 4z, the confirmation signal given from the output information unit 133 is encoded by the encoder 142, further modulated by the modulator 143, and the modulated confirmation signal fz (the same frequency fl may be used if B¥ division processing is performed) is sent to the on-board antenna. 12 to ground-L mounting M
Send to the 7th side.

The train position detection device 15 detects and stores the train position by receiving, for example, a signal from a marker (not shown) installed on the ground for each blockage section IT to nT using an antenna 15z. This train position detection signal is manually input to the output information section 13a and the human input information section 141.

Next, the operation will be explained. For example, train l is blocked section I
When the train l enters the blocked section IT, the relay TRI in the vehicle detection device 8 is restored, its contacts TR and 11 fall, and the train position detection device 91 detects that the train l has entered the blocked section IT. In response to this detection signal, the encoder 93 outputs ATO information or ATC information corresponding to the train approach blockage section IT specified by the signal from the train position detection device 91, among the information given from the output information generation device 92. encoded and further modulated by a modulator 94,
The information signal f1 is transmitted from the signal line 51.52 to each loop antenna 31 to 3n.

Information signal f1 transmitted to each loop antenna 31 to 3n
Of these, the loop antenna 31 of the closed section IT where the train 1 is located is coupled to the on-board antenna 12 and incorporated into the train system. In the on-board device, the information signal f1 received by the on-board antenna 12 is demodulated by the demodulator 131, and further demodulated by the decoder 1.
Decipher with 32.

Here, in the on-board device, the train position detection device 15 detects that the own train is entering the blocked section IT. On the other hand, from the ground equipment 7 to the loop antennas 31 to 3
The address of the blocked section into which the train l is entering is added to the information signal f1 transmitted to the train n. Therefore, in the on-board device, the output information section 133 determines whether the blocked section specified by the information signal fl and the blocked section detected by the own train position detection device 15 match. When doing so, the input information unit 141 transmits a confirmation signal. This confirmation signal is encoded by an encoder 142 and further modulated by a modulator 143. Confirmation signal f after modulation
2 is a frequency different from that of the information signal f1 from the ground equipment. (In the case of time division processing, the same frequency 11 may be used.) The confirmation signal f2 transmitted from the modulator 143 to the on-board antenna 12 through the switch 15 is transmitted to the loop antenna 31.
and is further input to ground equipment M7 through signal lines 51 and 52. In the ground device 7, the confirmation signal f2 input through the switch 11 is sent to the demodulator 1 of the receiver 10.
After demodulating at 0t and decoding by the decoder 102, the information checking section 103 compares and checks the information with the information from the transmitting section 9, and performs control and display.

Note that when a train exists in multiple blocked sections, as shown in Fig. 4, the information signal f1 addressed to each blocked section is transmitted at a time interval t2, and the time interval t during which no transmission is made is
2 is used to perform time-division processing for transmitting the confirmation signal f2 for each blockage section.

As described above, in the present invention, when transmitting information between the ground and the car 1-, the blocked section in which the train l is located is detected by both the ground and the car 1-, and this blocked section information is sent to the keypad. Information is transmitted as information.

Since ATO information, ATC information, etc. are delivered to the blocked section, this information transmission system of the present invention is compatible with actual information transmission. For this reason, ATO has very high reliability of information.
system or ATC system can be configured. Moreover,
Since information can be transmitted to a large number of blocked sections using the pair of signal lines 51 and 52, the information transmission line can be simplified. Furthermore, information transmission between the car and the ground L is performed using two frequencies f1.
, f2 can be used.

Effects of the Present Invention As described above, the present invention provides an information transmission device for transmitting information between an on-board device provided on a train and a ground device provided on the ground, in which the on-board device is connected to a vehicle. The above-mentioned ground device includes a loop antenna installed at each entry point of each blocked section, and a train detection device that detects the train position for each blocked section, Based on the train detection signal from the train detection device, train position information is transmitted from the ground device to the loop antenna, and the train position information received by the onboard device through the loop antenna and the onboard antenna is transmitted to the vehicle. Data transmission is performed when the train position information matches the train position information stored in It is possible to provide an information transmission device that can configure the following.

[Brief explanation of the drawing]

Fig. 1 is a block diagram schematically showing the configuration of the information transmission device according to the present invention, Fig. 2 is a circuit diagram of the main part of the train detection device, Fig. 3 is a diagram showing the information encoding method, and Fig. 4 5 is a diagram illustrating an information transmission method, and FIG. 5 is a block diagram of the middle device. l...Track 2...Train 31~3n...Loop antenna 51.52...Signal line 7...Kenji'2 device 8...
Train detection unit 9... Information transmitting unit lO... Receiving unit 1
2...Onboard antenna 15...Train position detection device Fig. 2 Fig. 3 Fig. 4 [E exit] Exit Fig. 4 Fig. 5

Claims (1)

[Claims] (1) In an information transmission device that transmits information between an onboard device provided on a train and a ground device provided on the ground, the onboard device is a device that detects and stores the running position of the own train. The above-mentioned ground equipment includes a loop antenna installed at each approach point of each blocked section, and a train detection device that detects the train position for each blocked section. Based on this, train position information is transmitted from the ground device to the loop antenna, and the train position information received by the on-board device through the loop antenna and on-board antenna matches the train position information detected by the on-board device. An information transmission device characterized in that it performs data transmission when: