SU1271783A1 - Device for warning about train approaching site of work - Google Patents

Abstract

The invention relates to railway signaling devices, can be used to alert when a train is approaching the location of repair and maintenance work on hauls, and provides increased alert reliability by turning on locomotive signaling means. The device contains a simplex radio station with a transceiver 2 associated with the negotiating unit 3 and the alert frequency filter 4, the alert frequency receiver 5 with the indicator 6, time relay 7, the control frequency generator 8 installed in the controller’s room and the radio channel associated with the control channel. those ogres; equipment including a 9 s simplex radio station (L transceiver 10 associated with

Description

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a talk unit 11 and a paging frequency filter 12, a paging frequency receiver 13 with an indicator 14, a control frequency filter 15; the receiver 16 of the control frequency and associated with it, as well as the transceiver 10 time relay 17 and the frequency generator 18 of the control. An equipment is installed on the locomotive that includes a simplex radio station 19 with a transceiver 20 connected to the negotiation unit 21, and through the filter 22 of the control frequency to an element 23 that is connected to the transceiver 20 through the amplifier-detector 2A and the threshold element 25, as well as a locomotive control frequency receiver 26 associated with the indicator 27, the alert unit 28 and the time relay 29 associated with the alert frequency generator 30 and with the transceiver 20. 1 cf ff, 2 ill.

The invention relates to railway signaling devices and can be used to notify when a train is approaching the place of repair and maintenance work on tracks.

The purpose of the invention is to increase the reliability of the alert by turning on locomotive signaling means.

FIG. 1 is a block diagram of a device for alerting when a train approaches a work site ;; In FIG. 2 is a block diagram of the broadcast unit.

The device contains an apparatus 1 located at the head of the work dispatcher, which includes a simplex radio station with a transceiver 2 connected to a neipower unit 3 and an alert frequency filter 4, a receiver 5 frequencies. alert with indicator 6, time relay 7 and frequency generator 8 of the control. The dispatcher’s equipment 1 has a radio channel associated with an on-site fencing simplex radio station 9j equipped with a transceiver 10 connected to a talk box 11 and an alert frequency filter 12, where the alert frequency receiver 13 is also installed with indicator 14, control frequency filter 15, receiver 16 the control frequency associated with the time relay 17, the control frequency generator 18, which are associated with the transceiver sensor 10. A radio station 19 is installed on the locomotive with the transceiver 20, which is connected to The negotiating unit 21, through the filter 22 frequency control with one input element And 23, the other input-Which is connected to the transceiver 20 through the amplifier-detector 24 and the threshold element 25. In addition, the locomotive is installed locomotive receiver 26 control frequency associated with an indicator 27, an alert block 28, and a time relay 29 associated with the alert frequency generator 30 and the transceiver 20.

The device works as follows.

Claims (2)

The dispatcher's simplex radio station 9 is periodically switched to transmission, the high frequency signal being modulated by the tone control frequency f 1 produced by the generator 8o. Switching the transceiver 2 from reception to transmission and controlling the generator 8 of the control frequency is performed by time relay 7. The high-frequency signal transmitted to the radio channel acts on the receiver of the transceiver 10 of radio station 9, which is installed: at the work site. As a result, the control frequency signal f 1 is fed to the input of the negotiation unit 11. The presence of a sound signal with the frequency f 1. Reproduced by the telephone of the negotiation unit 11, serves as an acoustic monitoring of the performance of the communication channel dispatcher - place of work. Through the filter 15 of the control frequency, the signal goes to the receiver 16 of the control frequency and then to the time relay 17. The time relay 17 is started after the reception of the signal by the frequency fV of the control is completed, turns on the transceiver 10 of the radio station 9 in the transmission mode and simultaneously. modulates the carrier frequency of the radio station 9 with the frequency i1 control. The transmitted radio station 9 high-frequency signal affects the receiver of the radio station 1 controller. The reception of the it frequency is monitored by the telephone of negotiation unit 3. The presence of an audible purity signal f1 indicates the health of the communication channel dispatcher - work location - dispatcher As the train approaches the work site, radio station 19 on the locomotive receives a signal from one (or from both) radio station 1 or 9 From the output of the receiver of the transceiver 20 of the locomotive radio station 19 through the amplifier-detector 24, the signal of frequency 1 is fed to the threshold element 25. Setting the threshold level of the element 25 allows you to adjust the length of the alert about the approach of the train. When signal f 1 exceeds a predetermined threshold level, set in advance, element 23 and the received signal are opened through the filter 22 of the control frequency and element 23 arrives at the locomotive receiver 26 of the control frequency. From the output of the receiver 26, the signal enters the indicator 27, which controls the reception of signals by the radio station 19, to the alert unit 28 and the time relay. An electromagnetic relay 31 is activated, which, through the delay element 32, controls the locomotive searchlight 33, and the electromechanical valve 34, controls the typhoon of the locomotive. The release delay element 32 of the relay 31 is necessary in order for it to be energized in the interval between the signals f1 of the monitoring frequency. The inclusion of the indicator 27 and the appearance of a sound signal in the telephone of the negotiation unit 21 serves as a warning to the locomotive crew of the train entering the area approaching the work site. The time delay relay 29 switches on the alarm frequency generator i 2 and translates the transceiver 20 into transmission. The high-frequency signal modulated by the tonal frequency i 2 transmits the signal perceived by the radio stations of dispatcher 1 and at the work site 9. In the case of receiving signals from a locomotive radio station 19, the talker units 3 and 11 and the indicators 6 and 14 will record the signals of the frequency f 2 alert, which also will signal a train approaching. After the train is removed from the work site and when the useful signal drops below the threshold of the threshold element 25, the element 23 closes and the searchlight 33 and the typhon 35 of the locomotive turn off. Claim 1. Device for notification of a train approaching a work site, containing simplex radio stations located at the work site and on the locomotive, the first of which has a control frequency generator and a talk box associated with the transceiver, radio stations on site The works has a transceiver, connected through a filter to the control frequency receiver, a control frequency generator and a talker unit connected to the transceiver, the radio station on the locomotive has transceivers An associated locating unit, an amplifier-detector and a filter; a locomotive control frequency receiver, characterized in that, in order to increase reliability by using locomotive radios, stationed at the head of the dispatcher, to alert the on-site and on the locomotive they are equipped with a time relay, and on the locomotive they have a warning unit, a warning frequency generator, a threshold element and an element whose output is connected to the input of the locomotive receiver of the control frequency, and one input is connected with the filter, another input through a threshold element is connected to the amplifier-detector, the output of the locomotive receiver of the monitoring frequency is connected to the warning unit and to the input of a time relay, the output of which is connected to the transceiver and to the input of the warning frequency generator, the output of which is connected to the controller, the time relay at the control station is connected between the output of the power source and the control frequency generator, the time relay at the work site is connected between the output of the control frequency receiver and the control frequency generator. Pi4Z.2 2. The device according to claim 1, wherein the notification unit contains a control relay and a delay element, connected via the contact of the control relay to the power supply of the locomotive's searchlight, and through an electromechanical valve to the typhon of the locomotive. 33