RU2519607C1 - Apparatus for controlling train traffic on railway crossing using radio channel - Google Patents

Abstract

FIELD: radio engineering, communication.

SUBSTANCE: apparatus for controlling a railway crossing using a radio channel includes a control unit connected to a CAN interface, which is connected to a railway crossing object interface, which is connected to a protecting signal unit, a car traffic light unit, lifting gate actuators and path barrier actuators, and a wireless modem connected through an interface to the CAN interface. The apparatus further includes a unit for calculating the length of the warning portion, which comprises series-connected data input module, data verification module, instruction generating module and format converter. The data input module and the format converter are connected through the CAN interface to the control unit.

EFFECT: safer train traffic.

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Description

The invention relates to the field of railway automation and telemechanics, in particular to devices and systems for regulating the movement of trains, and can be used to ensure safety and control a railway crossing at high-speed sections of railways.

A device for railroad crossing fencing is provided, comprising an automatic traffic light and automatic barrier activation unit on one side of the railway track, an appropriate code generator for the rail code of the rail circuit of the approaching section requiring stopping the train, and a traffic light switch unit, similar blocks, installed on the other side of the railway track, sealed emergency alarm button and emergency railroad fencing, with the contact of which the inputs of the mentioned blocks are connected, telephone and radio communications for transmitting messages to the station duty officer and train drivers approaching the train relocation, the unit for switching on the acoustic signal of the general alarm and the police flashing light installed on the roof of the room of the alarm siren on duty, the automatic the formation of an emergency message associated with telephone and radio communications, while the input of the switching unit installed on the roof of the room the alarm siren on duty and the police flashing beacon and the input of the automatic alarm generation tool are connected to the contact of the sealed emergency alarm button and the emergency rail fence, the automatic alarm generating tool includes a speech synthesizer. The device located at the shift duty officer is equipped with a serially connected master oscillator, a phase manipulator, the second input of which is connected to the output of the modulating code generator, an amplitude modulator, the second input of which is connected to the output of the speech synthesizer, the first mixer, the second input of which is connected to the first output of the first a local oscillator, an amplifier of the first intermediate frequency, a first power amplifier, a duplexer, the input-output of which is connected to a transceiver antenna, a second power amplifier, a second mixer, the second input of which is connected to the first output of the second local oscillator, an amplifier of the second intermediate frequency, a multiplier, the second input of which is connected to the second output of the first local oscillator, a bandpass filter, a phase detector, the second input of which is connected to the second output of the second local oscillator, and the registration unit, for train drivers approaching a train moving in series with a master oscillator, a phase manipulator, the second input of which is connected to the output of the generator of the modulating code, the first m mixer, the second input of which is connected to the first output of the first local oscillator, the amplifier of the third intermediate frequency, the first power amplifier, duplexer, the input-output of which is connected to the transceiver antenna, the second power amplifier, the second mixer, the second input of which is connected to the output of the second local oscillator, amplifier the second intermediate frequency, an amplitude limiter, a synchronous detector, the second input of which is connected to the output of the amplifier of the second intermediate frequency, and an audible warning device, followed by they are connected to the output of the amplitude limiter by a multiplier, the second input of which is connected to the second output of the first local oscillator, a bandpass filter, a phase detector, the second input of which is connected to the output of the second local oscillator, and a code comparison unit, the second input of which is connected to the output of the memory unit, and the output is connected to the input of the modulator code generator (RU 2369510, B61L 29/00, 2009).

A disadvantage of the known device is that if the category of the approaching train does not match the code signals supplied to the rail circuits of the proximity sections and the speed of the train is not taken into account, the traffic safety in the railway crossing area is reduced.

The closest analogue to the claimed invention in terms of essential features and functionality is a railway crossing control device using a radio channel, containing a control unit, the information inputs of which are connected to the CAN interface, to which the output of the interface unit with the railway crossing facilities is connected, and to its inputs the block of the traffic light, the blocks of car traffic lights and barriers and the drives of the devices of the road barrage, the interface unit with radio channel and radio modem (Monthly scientific-theoretical and production-technical magazine of Russian Railways OJSC “Automation, Communication, Informatics” 2007, No. 5, p.8 “Automatic crossing signaling with a radio channel”).

A disadvantage of the known device is that when a locomotive receives from the control unit a confirmation of the readiness to move to closing, the change in the speed of the train and the actual occupancy of the rail circuit in the notification section are not taken into account.

The technical result of the invention is to increase the safety of train traffic by calculating the length of the notice section to ensure the standard closing time of the crossing.

The technical result of the invention is achieved in that a railway crossing control device using a radio channel comprising a control unit, information inputs and outputs of which are connected to a CAN interface, to which a railway crossing object interface is connected, to which a block of traffic lights, a block of traffic lights are connected , barrier drives and drives for barricade devices, a radio modem connected via an interface to a CAN interface, according to the invention ene calculating unit length notification portion comprising serially connected data input unit, data verification module, a generating module and the command format converter, wherein the input module data input and output formats converter are connected via CAN-interface respectively to the output and input of the control unit.

Figure 1 presents the functional diagram of the device. Figure 2 shows the algorithm of the unit for calculating the length of the notification section.

The railway crossing control device using a radio channel contains a control unit 1, the information inputs and outputs of which are connected to the CAN interface 2. An interface 3 of the railway crossing facilities is connected to the CAN interface 2, to which the block 4 of the traffic light, block 5 of the traffic lights, are connected 6 barriers and actuators 7 of the device for blocking the path, a radio modem 9 connected via an interface 8 to the CAN interface 2. A unit 10 for calculating the length of the notification section, including the following, is introduced into the device well-connected data input module 11, data verification module 12, command generation module 13 and format converter 14. Moreover, the input of the data input module 11 and the output of the format converter 14 are connected via the CAN interface 2, respectively, to the output and input of the control unit 1.

The railway crossing control device using a radio channel operates as follows.

When the train enters the zone of responsibility, a radio link is established between the locomotive and the stationary radio modem 9 via a radio channel. The interface 8 and the format converter 14 convert the data from the format defined by the protocol of interaction with the radio modem 9 to the format defined by the protocol of the CAN interface 2. From the output of the radio modem 9 through the interface 8 and CAN interface 2, a message is transmitted to the input of the stationary control unit 1 following data:

- train number;

- the number of the route on which the train is located;

- coordinate of the head of the train (picket, kilometer);

- train category;

- speed of movement.

The initial data received by the control unit 1 from the train in the notification zone to the move (from the moment the rail circuit is occupied, preceding the rail circuit of the notification section) is received from its output via the CAN interface 2 to the input of block 10. These data include the coordinate of the train and the coordinate of the moving axis to calculate the distance to the crossing, the current speed of the train, the maximum acceleration to the maximum permissible speed for the calculation cycle. The values of maximum acceleration and permissible speed are determined by the category of train, the restrictions of a particular section and the train situation.

The data input module 11 of the notification section length calculation unit 10 receives data from the CAN interface 2, converts the received data from the CAN protocol format to the internal format of the block 10 and transfers them to the data verification module 12. The data verification module 12 checks them for correctness and, if successful, passes them to the command generation module 13.

Module 13 of the formation of teams on the basis of the received data calculates the arrival time of the train at the crossing and generates a command to close / open the crossing.

The format converter 14 converts the commands generated by the module 13 from the internal format into the format defined by the CAN 2 protocol, while block 10 fixes the mode of switching the move on.

Block 10 calculating the length of the notification section determines the distance to the crossing by calculating the mathematical module of the difference of the coordinate of the train and the coordinates of the axis of the crossing, taking into account the maximum measurement error of the coordinate of the train in satellite navigation (30 meters), taking into account the distance traveled by the train during the time between successive communication cycles over the air , and also taking into account the distance traveled by the train during the processing of information in the device (0.5 sec), and taking into account half the width of the carriageway of the crossing.

Based on the calculated distance between the head of the train and the crossing axis, taking into account the current speed of the train and the maximum acceleration of the train to the maximum permissible speed for the calculation cycle, block 10 determines the arrival time for the crossing. In this case, the estimated time is reduced by the amount of time the command was sent to close the crossing (1 sec).

From the output of block 10, the signal about the calculated arrival time of the train to move arrives at the input of block 1. Block 1 compares the calculated arrival time of the train to move with the standard notification time for a particular move. If the calculated time is less than or equal to the normative value, then block 1 gives a control signal to close the level crossing, which is sent to the interface 3 of the railway level crossing, directly connected to block 4 of the traffic lights, block 5 of traffic lights, 6 barriers and 7 barriers .

The action algorithm of block 10 for calculating the length of the notification section applies both to the station moving and to the moving stage (Fig. 2).

After giving the command to close the crossing, the calculation of the arrival time of this train to move block 10 is stopped.

Block 10 calculates the arrival time at the crossing of the radio-equipped train.

If the estimated value of the arrival time to the move corresponds to the set value of the closing time of the move, for example 45 seconds according to the Instructions for signaling, then block 1 sends a signal to close the move.

After that, in block 10, data on rail chains and train motion parameters are compared.

If the location of the train is correctly determined by block 10, the arrival time of the train to the crossing is calculated according to well-known formulas.

The move opens on command from block 1 after the train passes.

The effectiveness of a level crossing control device using a radio channel consists in optimal level crossing control by automatically calculating the length of the notice section to the level crossing with the signal to close the level crossing by occupying a certain rail chain and providing the standard time for the level crossing notification of the train in accordance with its movement parameters, which leads to an increase in the capacity of vehicles at the crossing.

Claims (1)

A level crossing control device using a radio channel, containing a control unit, the information inputs and outputs of which are connected to a CAN interface, to which the railway level crossing object interface is connected, to which a block of traffic light, a block of traffic lights, barrier drives and drives of barrage devices are connected, a radio modem connected via an interface to a CAN interface, characterized in that a block for calculating the length of the notification section, including the following the data input module, the data verification module, the command generation module, and the format converter, and the input of the data input module and the output of the format converter are connected via the CAN interface, respectively, to the output and input of the control unit.

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