JPS6154356A - Detector for position of train - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a train position detection device for detecting the running position of a train.

BACKGROUND ART Conventional techniques for detecting trains generally include a method in which a train detection signal is sent from a ground transmitter to a track circuit, and a ground receiver receives a short circuit in the track circuit caused by a train axle.

FIG. 3 is a diagram showing the configuration of a conventional train position detection device using this axle short-circuit method. In Fig. 3, ■ and 2 are track circuits, and the closed sections IT, 2 are spaced at appropriate intervals.
T.

3T160. It is divided into 3 is a train running on track circuit 1.2.

A winding (N41
, N42) and (N sl, N 52 ), respectively. These transformer 4.5 windings N41. N51 is orbital circuit 1 21ijl
The winding N42 of the transformer 4 is connected to the ground transmitter 6 for transmitting the train detection signal, and the winding N52 of the transformer 5 is connected to the ground receiver 7.

In the conventional train position detection device described above, if the train 3 is present in the blocked section IT, for example, the track circuit 1.2 is short-circuited by the train fib, so the receiver 7 cannot receive the train detection signal.

From this, it is detected that the train 3 exists within the blocked section IT. The same applies to other closed sections.

Problems with the Prior Art However, although the conventional free car position detection device can detect that the train 3 has entered the blocked section, it cannot detect where the train 3 is located in the blocked section. I can't. If an attempt was made to realize this by providing a plurality of train detection devices having the configuration shown in FIG. 3, the configuration would be extremely complicated and the equipment cost would be enormous, making it impractical.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems and provides a train position detection device that can detect where a train is located in a blocked section with a simple configuration and low equipment cost. The purpose is to provide.

Structure of the Present Invention In order to achieve the above objects, the present invention provides a device for detecting a train position by sending a train detection signal from a ground transmitter to a track circuit, and receiving a short circuit in the track circuit due to a train axle with a ground receiver. A transformer is installed at each of the multiple positions where a train is to be detected.One of the two windings of these transformers is connected between the track circuits, and the other windings are connected in series with each other. It is characterized in that it is connected to the ground receiver side.

Embodiment FIG. 1 is a block diagram of a train position detection device according to the present invention. In FIG. 0, the same reference numerals as 3121 indicate the same components. In this example, the closed section IT of track circuit l, 2, 2T109. Transformers 81, 82 and 83 having windings N1 and N2 are installed at a plurality of train detection positions A, B, and C set at appropriate intervals from one blockage boundary, respectively. Each winding N1 of transformers 81 to 83 is connected to track circuit 1.
-2, and the other winding N2 is connected in series with each other and led to the ground receiver 7.

Blocked section IT, 2T110. A transmitting transformer 9 is installed near the other closed boundary, and the winding N91 of this transformer 9 is connected between the track circuits 1 and 2, so that the first winding N92
The transmitter 6 is VC connected to the 6 transformers 81 to 83
and 9 are constituted by matching transformers, for example.

Next, the operation of the train detection device according to the present invention will be explained with reference to FIG. Winding N 92 of the transformer 9 from the transmitter 6,
When a small tie detection signal is sent to track circuit 1.2 through N91, assuming that train 3 does not exist in blocked section 2T,
In these two blocked sections, the track circuit short circuit caused by the first car 611 does not occur. Therefore, the received voltage er at the input terminal of the receiver 7 is the voltage e1, e induced in the winding N2 of the transformers 81 to 133 installed at each train detection position A-C.
It is the value obtained by adding 2 and e3. That is, e r"el+e2+e3.

However, train 3 entered the blocked section 2T.

When the track circuit 1-2 is short-circuited by the axle at the train position l detection point A, both ends of the winding t'JNl of the transformer 81 are also short-circuited by the axle, so that the induced voltage e1 in the winding N2 decreases. Therefore, the received voltage er at the input end of the receiver 7 decreases by the amount of decrease in the induced voltage e1.

As the train 3 moves along the train position detection position -I A - B - C, the windings N1 of the transformers 81 → 82 → 83 are sequentially short-circuited, and the induced voltages e2 and e3 generated in the windings N2 decrease. Therefore, the received voltage er also gradually decreases. Therefore, by decoding the magnitude of the received voltage er with the receiver 7, the train position can be detected.

As described above, according to the present invention, the train position can be detected at multiple points A-C. Moreover, since the position of the train 3 can be detected at multiple points A to C using one transmitter and one receiver, the configuration can be simplified and equipment costs can be reduced.

Effects of the Present Invention As described above, the present invention provides a device for detecting the position of a train by sending a train detection signal from a ground transmitter to a track circuit, and receiving a short circuit in the track circuit due to a train axle with a ground receiver. A transformer is installed at each of the multiple positions where one car is to be detected, and one winding of the 28 wires of these transformers is connected between the track circuits, and the other windings are connected in series with each other. Since the above ground is connected to the receiver side, it is possible to provide a train position detection device capable of detecting train positions at multiple points with a simple configuration and low equipment cost.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a tally car position detecting device according to the present invention, FIG. 2 is a diagram showing the relationship of reception levels to points, and FIG. 3 is a block diagram of a conventional train position detecting device. 1.2... Track circuit 3... Row 1 (6...
Transmitter 7...Receiver 81-8391/Transformer Nl, N2...8 wires Figure 3r
6 Mi d8

Claims (2)

[Claims] (1) Send a train detection signal from the ground transmitter to the track circuit,
In a device that detects the train position by receiving a short circuit in the track circuit caused by the train's axle with a ground receiver, a transformer is installed at each position where the train position is to be detected, and one of the two windings of these transformers is A train position detection device characterized in that a wire is connected between track circuits, and other windings are connected in series to each other and connected to the ground receiver side. (2) The train position detection device according to claim 1, wherein the plurality of positions at which the trains are to be detected are set within a one-block section.