RU76306U1 - AUTOMATIC SIGNALING DEVICE FOR TRAIN APPROXIMATION - Google Patents

Abstract

The utility model relates to automation and telemechanics in railway transport, in particular, to warning devices for repair crews about the approach of a train to a work site, and can be used on hauls and railway stations and railway access roads of enterprises of any form of ownership. The automatic signaling device about the approach of the train contains a signal receiver installed at the site of the work and an alarm control element. In addition, an omnidirectional antenna connected to the input of the signal receiver, a decoder, the input of which is connected to the output of the signal receiver, and the output to the actuator of the alarm, and an encoder, a transmitter whose input is connected to the output of the encoder, and a directional antenna, which is connected to the output of the transmitter. The proposed device for automatic signaling about the approach of a train will increase the reliability of detection of an approaching train, ensure the convenience of using mobile repair crews, reduce the labor costs of signaling personnel, and, therefore, increase the safety of train traffic.

Description

The utility model relates to automation and telemechanics in railway transport, in particular, to warning devices for repair crews about the approach of a train to a work site, and can be used on hauls and railway stations and railway access roads of enterprises of any form of ownership.

A device for warning about the approach of a train, comprising a receiver for receiving acoustic vibrations from the rails, a signal processing unit, connected to the output of the receiver; a useful signal selection unit connected to an output of the signal processing unit; a fixing trigger, the input of which is set to “zero” is connected through the element NOT (inverter) to the first output of the block of the selection of the useful signal, and the input of the installation of “unit” is connected to the second output of the block of the selection of the useful signal; the OR element, the input of which is connected to the output of the fixing trigger, and the alarm unit, the input of which is connected to the output of the OR element. [A.S. USSR No. 1066868, cl. B61L 23/06. Yu.V. Lazarenko et al. A device for alerting the approach of a train. Publ. 01/15/1984, bull. No. 2]. The principle of operation of this device is based on the receiver picking up acoustic vibrations that are created by impacts of the train wheels at the joints of the rails.

The disadvantages of this device are the low reliability of detection of an approaching train, especially on the “jointless” track, the inability to use repair teams using tools and mechanisms that create a strong

acoustic noise, and crews moving during work along the path.

A device is known for automatic signaling about the approach of a train to a section where traveling work is carried out, containing a laser generator and a reflected signal receiver installed at the site of work, including a photocell and a filter associated with alarm actuating elements connected to a controlled power source connected to the unit changes in signaling modes, and reflectors installed in the zone for controlling the proximity of the train [A.s. USSR No. 914383, class B61L 23/06. B.A. Levin, M.A. Shevandin. Automatic signaling device about the approach of the train to the section with track work. Publ. 1982, bull. No. 11].

The disadvantages of this device are the harmful effects of laser radiation on the organs of vision, the dependence of the magnitude of the coverage area on weather conditions, the inability to use in curved sections of the railway track, and, as a result, the low reliability of detection of an approaching train.

This device is selected as a prototype.

The technical result of the proposed utility model is to increase the reliability of detection of an approaching train by eliminating the influence of weather conditions and depending on the plan and profile of the railway.

The technical result is achieved by the fact that in the known device for automatic signaling of the approach of a train containing a signal receiver installed at the place of work and an alarm signaling element, an omnidirectional antenna connected to the input of the signal receiver, a decoder, the input of which is connected to the output of the signal receiver, is additionally introduced

the output is to the alarm control element, and an encoder is installed on the locomotive, a transmitter whose input is connected to the encoder output and a directional antenna that is connected to the transmitter output.

The introduction of a transmitter and a directional antenna mounted on a locomotive into a known device makes it possible to use a radio signal for automatic signaling of a train approaching, ensuring independence from weather conditions, an omnidirectional antenna for a receiver - detecting an approaching train from any direction, an encoder and decoder - protection against false positives due to interference in the radio channel.

Figure 1 presents the implementation of the proposed device.

The proposed device for automatic signaling about the approach of a train contains a locomotive (or other self-propelled unit of rolling stock) 1, on which an encoder 2 is installed, the output of which is connected to a transmitter 3 operating on the VHF frequency of the repair and operational radio communication radio channel, the output of which, in turn, a directional antenna 4 is connected, the maximum radiation of which is directed in the direction of the locomotive, a portion of path 5 where work is performed on which an omnidirectional antenna 6 is installed, a signal receiver 7, an input which is connected to an omnidirectional antenna, a decoder 8, the input of which is connected to the output of the signal receiver, and an alarm control element 9, whose input is connected to the output of the decoder.

The proposed device automatic signaling the approach of the train works as follows.

On the locomotive 1 during its movement there is a continuous emission of the signal generated by the encoder 2, through the transmitter 3 and the directional antenna 4 forward in the direction of the locomotive. Value

the emitted signal is set so that it can be detected by the signal receiver at a distance of up to 2 km. At the site of work 5, the signal is captured by an omnidirectional antenna 6, which has a circular receiving radiation pattern in order to detect the approach of the locomotive to the site of work from either side. From the antenna, the signal enters the signal receiver 7, then to the decoder 8 and to the actuator 9, which indicates with sound and light signals that the locomotive is approaching the place of work. The encoder 2 and the decoder 8 prevent false alarms of the proposed device automatic alarm about the approach of the train from interference and voice messages in the radio channel repair and operational radio communications.

The proposed device for automatic signaling about the approach of a train will increase the reliability of detection of an approaching train, ensure the convenience of using mobile repair crews, reduce the labor costs of signaling personnel, and, therefore, increase the safety of train traffic.

Claims (1)

A device for automatically signaling the approach of a train containing a signal receiver installed at the site of work and an alarm control element, characterized in that an omnidirectional antenna connected to the input of the signal receiver is added to it, a decoder whose input is connected to the output of the signal receiver, and the output an encoder, a transmitter, the input of which is connected to the output of the encoder, and a directional antenna, which is connected to to the transmitter.