JPS6296171A - Train presence detector - 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 Industrial Application] The present invention relates to a train presence detection device that detects the section where a train is present on the ground (control center), and particularly to a train presence detection device that uses radio waves. be.

[Conventional technology]

FIG. 3 is a configuration diagram showing a conventional train presence detection device disclosed in, for example, the 1st/No. In the figure, (
1) is a transmitter mounted on a train, (core a) to (2g)
is an LCX installed on the ground along the route of a train, and is divided into sections for detecting the presence of a train. (3a) to (3g) are seven receiving devices connected to each LCX, and (4') is a logic unit connected to each receiving device.

The conventional train presence detection device is configured as described above, and radio waves are continuously emitted from the train to the ground by the transmitting device (1) mounted on the train. For example, a train is LCX (2e
) exists in the section where it is installed. Radio waves from a transmitting device (1) mounted on a train are guided to a receiving device (3e) via an LCX (coe).

The receiving device (3e) sends received information (nullch information) to the logic section (<=). The logic unit (Hiroshi) monitors the received information from each receiving device and determines that a train exists in the corresponding section based on the presence of the received information.

[Problem that the invention seeks to solve]

Conventional train presence detection devices have the problem that receiving devices are required for each section to detect the presence of a train, and as the number of sections increases, the cost increases accordingly, making it uneconomical. was there.

This invention was made to solve the above-mentioned problems, and an object of the present invention is to obtain an economical train location detection device that can detect the absolute position of a train with a small number of receiving devices.

[Means for solving problems]

The train presence detection device according to the present invention combines LCX and coaxial cables in a predetermined pattern to form seven cables, combines a plurality of these cables and lays them, connects a receiving device corresponding to the cable, and connects the train to the logic section. It has an added function to logically determine the position.

[Effect]

In this invention, the seven cables configured by combining LCX and coaxial cables and the receiving device connected to these output received information to the logic part when the train is in the LCX section, and when the train is connected to the coaxial cable. Since reception information is not output when the train is present in the section, by combining multiple systems of this type of cable and receiving device, the section where the train is present can be logically determined.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a block diagram showing an embodiment of the present invention), in which (1) is a transmitting device mounted on a train, (2a) to (-
g) and (ri a) to (ri d) are LCX and coaxial cables laid on the ground along the route of the train;
Cables of stripes (A), (Bl.

(C) [These cables are composed of LCX and coaxial cables connected in series in a predetermined pattern. For example, (A) is (
2a) - (evening a) - (Jb) - (tb+) - (2c) -
(B) consists of (2e) - (
d) - (2f) consists of shi, and (C) consists of (tsug). ] (3a).

(,,?e), (,7g) are each cable (A)
, (B), (C) are connected to the receiving device, (!
IA) is a logic section connected to each receiving device.

In the train presence detection device configured as described above, radio waves from the transmitting device (1) mounted on the train are transmitted to the L of each cable (A), (B), (C).
If it exists in the CX part, the corresponding receiving device (ja
).

It is input to (3e) and (3g), and is not input when it exists in the coaxial cable part. For example, in Fig. 1, when the train is in the LCX (uc) section, the receiving devices (3a) and (Jg) receive the radio waves emitted by the transmitting device (1), and the receiving device (3e) receives the radio waves emitted by the transmitting device (1). It will be received. Each receiving device stores reception information or non-reception information in a logic section (+A)K.
Send. In this case, the relationship between the train position and the received information and non-received information input to the logic section (4A) is as shown in FIG. 2. In the figure, / represents a receiving state, and O represents a non-receiving state. The logic section (<zA) receives information received from each receiving device,
By monitoring non-reception information and making simple logical decisions, it is possible to know the section where a train is present.

In the above embodiment, three cables are used to detect the presence of a line in seven sections, but if two cables are used, it is possible to provide a unit of detection for the evening section.
In general, if N-strand cables are used, it is possible to provide line detection locations for the (co-/) section.

〔Effect of the invention〕

As described above, according to the present invention, by using a cable in which an LCX and a coaxial cable are arranged in series in a predetermined pattern, the number of receiving devices can be reduced by less than the number of line presence detection units, so it is inexpensive. This has the effect of providing a train presence detection device.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a train presence detection button according to an embodiment of the present invention, Fig. 2 is a diagram showing an example of logical judgment in this embodiment, and Fig. 3 shows a conventional train presence detection device. FIG. In the figure, (1) is the transmitting device, (core a) to (2g) are the LCX, (,?a), (,?e), (jg) are the receiving device, (<zA) is the logic section, a) to (yd) are coaxial cables, (A) and (B). (C) is a cable. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. A, B, C: Kufu "NO L W-) 2 figure

Claims (3)

[Claims] (1) A transmitting device mounted on a train is connected to multiple cables laid on the ground along the train's route, and radio waves from the transmitting device mounted on the train are connected correspondingly to each cable. 1. A train location detection device comprising: a receiving device that receives signals; and a logic unit that monitors the output of each receiving device and logically determines the position of a train for each section. (2) Claims characterized in that the cable laid on the ground along the route of the train is constructed by arranging a leaky coaxial cable (hereinafter referred to as LCX) and a coaxial cable in series in a predetermined pattern. The train presence detection device according to paragraph 1. (3) The radio waves from the transmitting device are input to the corresponding receiving device when the train is present in the LCX section of each cable, but are not input when the train is present in the coaxial cable section. A train presence detection device according to claim 2.