RU2436698C2 - Forced stoppage automatic system of locomotive shunting on station dead-end siding - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to railway ACS and telemetry systems and may be used in shunting operations on station dead-end siding. Proposed system comprises locomotive controller with locomotive board connected thereto, radio modem, relay unit to open electro pneumatic valve of forced braking and to switch locomotive traction control circuits. It comprises also the tower control device mounted at central control station and connected with data board, contacts of track indicating relay of railway station electric interlocking with data concentrator, radio modem to allow radio communication with the system locomotive equipment. Laser range finders are mounted at fixed buffers of the track control section to determine the distance from fixed buffer to approaching shunting train. Additionally, proposed system incorporates track controllers connected with data concentrator and appropriate laser range finders.

EFFECT: preventing collision of shunting rolling stock or locomotive on station dead-end siding with stationary obstacles.

2 dwg

Description

The invention relates to the field of railway automation and telemechanics and can be used during shunting operations at the station’s deadlocks as an additional means of improving traffic safety during shunting operations at the station’s deadlocks, providing a forced stop when the system determines a dangerous approach of a shunting locomotive or train with a stationary obstacle (way emphasis) due to the automatic transmission to the locomotive of a command to force a stop on a dedicated radio channel.

Known shunting automatic locomotive alarm (LITTLE), adopted as a prototype. The LITTLE system is designed to ensure the safety of shunting operations at railway stations and prohibit the movement of a locomotive (train) at a speed higher than permissible, as well as to automatically stop it in front of a closed signal or place of work. The use of this system eliminates the collision of wagons and locomotives at the stations and prevents the occurrence of accidents due to errors of staff. LITTLE includes station and locomotive equipment.

The main components of the LITTLE locomotive equipment are: on-board controller, switch unit, display unit, control unit, transceiver and antenna.

The on-board controller receives commands from the station equipment through the transceiver. The controller polls the condition of the electric equipment of the locomotive through the block of switches and reads information from the pulse sensors. Information for the driver is displayed on the monitor screen of the display unit, and the driver enters commands into the on-board controller using the functional keyboard of the control unit. Locomotive equipment can operate in three modes: manual, autonomous and remote control.

As a channel for transmitting information from stationary devices to locomotive devices in the LITTLE system, a digital radio channel operating in the range of 460 MHz is used. The digital radio channel of the system, together with a high-performance computer, provides the efficiency of locomotive control and tracking of their location, unattainable by traditional means.

Application software on-board equipment LITTLE is a standard DOS application that works in real time. The software constantly monitors the state of movement of the locomotive, keyboard, electrical equipment of the locomotive, data of the radio channel (Post telegram) and displays information on the permissible speed, expected speed on the next isolated section, the number of free forward-lying block sections, the distance to the first one along the way isolated joint; distance to the place of work and to the end of the route task; established operating mode and given route and other information. In critical situations, the program affects the control of the locomotive's power plant and produces smooth or emergency braking.

Control of the transmitted information between the station and locomotive equipment is carried out according to the CRC32 protocol.

The functional safety of the LITTLE is based on a two-set construction of equipment both at the level of reading data from the electric centralization relay, as well as at the level of data processing, input of user commands and output of operational data, as well as control of moving objects over the air (see V.I. Zorin, .E. Shukhina, PV Titov “Microprocessor-based locomotive safety systems for the movement of trains of a new generation”, World Railways No. 7, 2003 p.61).

A disadvantage of the known system is the lack of means for effectively eliminating the collision of the shunting train with the track stop when it is deposited forward by cars with carriages forward due to insufficient accuracy when measuring the distance from the deadlock to the head car of an approaching shunting train.

The technical result of the invention is to create a system to prevent a collision of rolling stock or a locomotive during shunting on the dead ends of the station with a stationary obstacle (track stop).

The technical result is achieved by the fact that in an automatic system for forcibly stopping a shunting locomotive during maneuvers on dead ends of stations containing a locomotive controller located on a locomotive with a locomotive remote control, a radio modem, and a relay unit for opening an electro-pneumatic forced braking valve and for switching electrical circuits locomotive traction control located at the central control point connected with the information panel, with the contacts of the repeaters of the track relays of the electric centralization of the railway station, with the data concentrator and the radio modem providing radio communication with the locomotive equipment of the system, according to the invention, laser range finders are placed on the deadlocks of the monitored sections of the track to determine the distance from the deadlock to the approaching shunting composition and track controllers have been introduced that are connected to a data concentrator and corresponding laser rangefinders.

The technical solution with the above set of features makes it possible to prevent collision of a rolling stock or locomotive with a dead end during shunting operations on the dead ends of the station through the use of a laser range finder, which ensures high accuracy in determining the distance from the dead end to rolling stock and its speed and due to transmission commands for the forced stop of the locomotive when exceeding the permissible speed at a specific distance from the head rut staff to track all the way.

The invention is illustrated by drawings. Figure 1 and figure 2 presents a diagram of an automatic system for forcibly stopping a shunting locomotive during maneuvers on the dead ends of the stations.

The automatic system for forcibly stopping the shunting locomotive during maneuvers on the dead ends of the stations includes a control unit 2, located at the electric centralization station of the railway station and connected to the repeater contacts of the track relay for electric centralization of the railway station (not shown), with a data concentrator 3 connected via controllers track 4 with laser rangefinders 6, as well as through a radio channel with locomotive equipment shunting locomotives s. Track equipment connected to track stops on controlled deadlocks is connected to data concentrator 3.

Each locomotive has a locomotive controller 8 with a locomotive controller 9 connected to it, a radio modem 7, a relay unit 11 connected to the electric traction control circuits of the locomotive and a forced braking valve 10.

The central control point, located at the electric centralization station of the railway station, contains a control unit 2, connected to the radio modem 5, the information desk 1 and the contacts of the repeaters of the track relays of the electric centralization of the railway station.

Track equipment located at track stops of monitored deadlocks contains laser rangefinders 6, each of which is connected to a corresponding track controller 4, connected by a communication line to a data concentrator 3, which is connected through a wired communication line to a control unit of guard station 2 installed at a central point control and connected to the radio modem 5.

The automatic system for forcibly stopping the shunting locomotive for shunting on the dead ends of the stations works as follows.

On track deadlock, track equipment is installed containing a laser rangefinder 6, directed along the axis of the deadlock railway track towards the approaching rolling stock, and track controller 4.

Data concentrator 3 is designed to collect data from laser rangefinders 6. Laser rangefinders 6 in the system can be up to 16 pieces. The data concentrator with 3 dedicated wire lines is connected to the equipment of the central control point.

The control unit guard 2 is the central information processor and provides data processing from laser rangefinders 6 of all deadlock paths on which they are installed. Determines the permissible speed of the shunting train (locomotive) depending on the measured distance from the train head to the track stop and the speed of the train, and also transfers data to the locomotive and commands to apply forced braking of the shunting train in the event of a possible collision with a dead end focusing on a dead end. Identification of the possibility of a collision is made on the basis of calculations of the braking distance S of the shunting train from its speed V (Fig. 1).

Locomotive equipment is used to organize the interaction between the locomotive driver and the system using the locomotive console 9. The locomotive controller 8 provides equipment control, the radio modem 7 serves to organize, together with radio modem 5, the central control point of the radio data transmission channel between shunting locomotives and the equipment of the central control point. The relay unit 11 affects the electric control circuits of the traction of the locomotive and the forced braking valve 10 in order to turn off the traction mode of the locomotive and perform forced braking of the shunting train.

When the rolling stock occupies the dead end track, the data from the respective repeaters of the track relays of the electric centralization of the railway station is fed to the control unit guard 2, which turns on the corresponding laser range finder 6 installed on the dead end stop of the dead end path. The laser range finder 6 begins to measure the distance S to the head carriage (in the direction of travel) of the approaching shunting train. At the same time, these values of the distance from the laser range finder 6 to the approaching head car are constantly sent to the control unit guard 2 through the data concentrator 3. The received data is used by the control device guard 2 to determine the permissible speed of the shunting train along the dead end based on the calculation table of the dependence of the length of the braking distance on the speed and number of cars.

The system provides the definition of a dangerous approach of a train with a stationary obstacle by comparing the actual speed V actual with a permissible V add depending on the distance S to the obstacle.

The permissible speed Vdop is determined taking into account the braking distance for individual locomotives (depending on type) and shunting trains (depending on length, weight, etc.), and also taking into account the maximum delay time for sending a command to force a stop of a locomotive from the moment of its formation until the impact on the braking and traction equipment of the locomotive.

If Vfact≥Vdop, then the system via a radio channel through a radio modem 5 transmits a forced braking command to the shunting locomotive, which makes the cars waggon in this dead end.

Inside information: permissible speed, actual speed of the train, the distance from the dead end stop to the head car of the shunting train are transmitted to the locomotive over the air and displayed for the locomotive driver on the display of the locomotive console 9.

The process of transmitting data from the control unit of guard station 2 over the radio channel to the shunting locomotive ends when a signal is released from the repeaters of the track relays of the electric centralization of the railway station that the corresponding deadlock has been cleared.

Inside information: permissible speed, actual speed of the train, the distance from the dead end stop to the head car of the shunting train is displayed on the information console 1 located at the workplace of the shunting manager at the station (station duty), which allows controlling the movement of the train on the dead end station. In the case of the execution of the forced braking command, the optical and acoustic signaling of the locomotive driver and the head of the shunting work at the railway station are turned on.

The system determines the speed limit for shunting movements, and if the actual speed of the shunting train, calculated on the basis of data received from the laser rangefinder 6, exceeds the set speed on this section of the track, stored in the memory of the control unit 2, then the locomotive driver will be informed overspeed (optical and acoustic alarm).

All data transmitted from the laser rangefinders 6, the actions of the operator, the manager of the shunting operation at the station with the information desk 1 and the actions of the shunting locomotive driver with the locomotive desk 9 are recorded in the registrars of the locomotive equipment and the guard control unit.

Claims (1)

An automatic system for forcibly stopping a shunting locomotive during maneuvers on dead end tracks of stations, containing a locomotive controller located on the locomotive with a locomotive, radio modem, relay unit connected to it, designed to open the electro-pneumatic forced braking valve and commuting electric locomotive traction control circuits located on the central locomotive the control station is a guard station connected to the information desk with contacts track relay relay of electrical centralization of the railway station, with a data concentrator, radio modem, providing radio communication with the locomotive equipment of the system, characterized in that laser range finders are located on the dead ends of the monitored sections of the track to determine the distance from the dead end stop to the approaching shunting and track controllers are introduced, which connected to a data concentrator and corresponding laser rangefinders.

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