RU2452644C2 - System to determine railway haul unoccupancy - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: system consists of two hardware subsets mounted at counting posts of stations limiting the haul. Every said subset includes rail transducers arranged at check track section of appropriate counting section and connected via signal generator with input of receiver unit with its output connected via interface unit incorporating axle counters with local communication main line whereto connected are interface unit with electric centralisation, control unit and interface unit with interface unit incorporating long-range digital radio communication channel whereto connected is radio modem with antenna. At least, one intermediate counting station is located at every intermediate section of railway haul. Every train locomotive is equipped with transceiver of long-range and short-range digital radio communication channels. Said transceiver is connected with central onboard traffic control device.

EFFECT: higher throughput of system for long hauls.

1 dwg

Description

The invention relates to railway transport and can be used in areas equipped with semi-automatic locking systems.

A device is known for determining the freedom from rolling stock of a section of a railway track, in which the number of axles of the wheelsets of the rolling stock, calculated by the corresponding reversing counters, when it enters the section of the railway, and the number of axles of the wheelsets of the rolling stock when it leaves the mentioned section and while maintaining the difference between them invariably decide on the unoccupied area, and the difference is estimated taking into account the initial readings of the counters at And even food for them (RU 2106993, B61L 1/16, 03.20.98). The disadvantages of the known technical solution is the low throughput in the case of long hauls, the possibility of fixing false employment, in case of failures when counting the axles, which necessitates additional visual control of the free haul.

Closest to the technical nature of the claimed system is a system adopted as a prototype for determining the freedom from rolling stock of track sections on a railway section, containing two half-sets of equipment installed on the counting sections of stations that limit the section, and each half-set contains rail sensors mounted on a control the track section of the corresponding counting section, which are connected through the signal shaper to the input of the receiver block, the output of which through an interface unit with axis counters it is connected to a local communication highway to which an interface unit with electrical centralization is connected, a control unit and an interface unit with a radio channel for long-distance, digital radio communication, which is connected via a stationary radio modem to a stationary antenna (RU 2238866, B61L 21/06, 10.27.04).

The known system has insufficient bandwidth in the presence of long hauls between stations.

The technical result of the invention is to increase the throughput of the system with long hauls between stations.

The technical result is achieved by the fact that in the system for determining the freedom from rolling stock of track sections on a railway line, consisting of two half-sets of equipment installed on the counting sections of stations restricting the stage, each half-set of equipment contains rail sensors installed on the control track section of the corresponding counting section, which are connected through the signal shaper to the input of the receiver unit, the output of which is connected through the interface unit to the axis counters with a local communication line to which an electrical centralization interface unit is connected, a control unit and an interface unit with a long-distance digital radio communication channel to which a radio modem with an antenna is connected, according to the invention, at least one intermediate counting station is located on each of the intermediate sections of the railway section an item including a stationary transceiver unit of a low-power digital short-range radio channel, the control port of which is connected to the first port of the microcontroller, the second whose unit through the interface is connected to a passive wheel passage sensor, the power inputs of the stationary transceiver unit and the microcontroller are connected to an autonomous power source, on each locomotive of the rolling stock there is a transceiver device of the channels of far and near digital radio communication, which is connected via a local highway to the central on-board control device rolling stock movement.

At an intermediate counting point, the stationary transceiver unit may additionally contain a GSM transceiver module, and the autonomous power supply may consist of two series-connected batteries connected to the input of the second voltage stabilizer, the output of which is designed to connect to the power input of the transceiver GSM module, the first battery connected to the input of the first voltage stabilizer, the output of which is designed to connect to the power inputs of a stationary receiver the transmitting unit and the microcontroller, which control output is connected to the on / off input of the second voltage regulator.

The drawing shows a structural diagram of a system for determining the freedom from rolling stock of track sections on a railway line.

The system for determining the freeness from rolling stock of track sections on the railway line 1 consists of two half-sets of equipment (the drawing shows one half-set of equipment) installed on the counting sections of 2 stations that limit the stage 1. Each half-set of equipment contains installed on the control track section of the corresponding counting section rail sensors 3, which are connected through the signal shaper 4 to the input of the receiver unit 5, the output of which through the interface unit 6 with the axis counters connected to the backbone LAN connection 7 to which an interface unit 8 connected to the electrical interlocking, a control unit 9 and the unit 10 interfaces with a radio link distal digital radio, connected to the radio antenna 11 a. At least one intermediate counting station 13 is located on each of the intermediate sections 12 of the railway stage, including a stationary transceiver unit 14 of a low-power digital short-range radio channel, the control port of which is connected to the first port of the microcontroller 15, the second port of which is connected to the interface 16 passive sensor 17 of the passage of the wheel, the power inputs of the stationary transceiver unit 14 and the microcontroller 15 are connected to an autonomous power source 18, on each locomotive 19 under of the rolling stock, a transceiver device 20 of the far and near digital radio communication channels is installed, which is connected via a local highway 21 to the central on-board device 22 for controlling the movement of the rolling stock. In the intermediate counting point 13, the stationary transceiver unit 14 may further comprise a GSM transceiver module 23, and the autonomous power source 18 may consist of two series-connected batteries 24, 25 connected to the input of the second voltage regulator 26, the output of which is intended to be connected to the power input GSM transceiver module 23, the first battery 24 is connected to the input of the first voltage stabilizer 27, the output of which is designed to connect to the power inputs of the station the transceiver unit 14 and the microcontroller 15, which control output is connected to the on / off input of the second voltage regulator.

The system for determining the freedom from rolling stock of track sections on a railway section works as follows.

Half-sets work in pairs in two main modes of reception and departure. When one half-set is in send mode, the other is in receive mode. In the mode of sending the train from the station to the input of unit 8 of the interface with electrical centralization, a send signal arrives at the adjacent station, which is transmitted through the local communication line 7 as a code message to the control unit 9. When the first pair of wheels enters the counting section 2, the busy section 2 receives a busy signal at the input of block 8, which, in the form of a code message, is transmitted to the control unit 9 through a local communication line 7. The control unit 9 through the local communication highway 7 transmits to the unit 6 of the interface with the axis counters a command to turn on the axis count. Block 6 includes a block 5 of receivers receiving input signals of the passage of the wheelsets of the train from rail sensors 3.

Information about the passage of the entire train along the enumeration section 2 of the railway line 1 is formed by block 8 in the form of a code parcel, which is transmitted through the local communication highway 7 to the control unit 9. On the same local highway, the control unit 9 receives from block 6 information on the number of axes of the train that passed through the counting section 2. Next, the control unit 9 passes through the local communication highway 7 to the block 10 of the interface with the long-distance digital radio channel information on the number of axes in the composition, passed through the enumeration section 2. This information is transmitted through the radio modem 11 via the radio channel for long-distance digital radio communication to the on-board transceiver 20 of the locomotive 19 of the rolling stock leaving the station. The obtained information about the number of axles in the composition through the local highway 21 is recorded in the memory of the central on-board device 22 for controlling the movement of the train.

In the mode of receiving the composition to the station, the transmitter of the on-board transceiver device 20 of the locomotive 19 transmits information on the number of axes in its composition to the stationary radio modem 11 of the long-range digital radio communication of the receiving station's half-set via the long-distance digital radio channel. This information, through the interface unit 10 with the radio channel of the far-field digital radio communication and the local communication highway 7, enters the control unit 9 at the receiving station. After the entire arriving train passes through the enumeration section 2 (similar to that considered when sending the train), the control unit 9 through the local communication line 7 receives from block 6 information on the number of axes of the train passing through the enumeration section 2 of the receiving station. The control unit 9 compares the number of axles calculated by block 6 and the information on the number of axles received from the locomotive 19, and when the numbers coincide, it transmits a command through the local communication line 7 to the receiving station unit 8 to issue a full train arrival signal. Block 8 generates the corresponding arrival signal in its entirety and generates a code package, which transmits through the local communication line 7 to the control unit 9, and the system comes to its original state. To increase the throughput, the locomotive 19 in the process of driving on lane 1 can activate the work of several (in the case of long hauls) intermediate counting points 13 for coordinate control of the gradual release of sections of haul 1. This option is available for locomotives equipped with modern control devices (for example, CLUB -U). In the CLUB-U control devices, the electronic memory of the central on-board train control device contains a route map with coordinate reference to the location of the track devices, and there is also a subsystem for determining the current location coordinate of the locomotive 19.

In this case, when locomotive 19 follows the intermediate counting point 13, the system operates as follows.

As the locomotive 19 approaches the next intermediate counting point 13, the central on-board control device 22 activates in the on-board transceiver 20 a low-power digital radio channel, which continuously calls through its on-board antenna a stationary transceiver unit 14 of a low-power digital short-range radio channel intermediate counting point 13, using the call address of the transceiver unit 14 of the low-power digital radio channel known to him, from The known coordinate of the location. The signal received by block 14 switches it from the standby mode, providing a small current consumption, in communication mode. In this mode, he first receives information from his on-board transceiver device 20 of locomotive 19 about his address. In response, block 14 transmits information to the locomotive 19 about its coordinate and diagnostic information about its availability and serviceability (in particular, the degree of charge of the autonomous power source 18). The on-board transceiver 20 transmits the received information to the central on-board control device 22 to verify the identification and diagnostic data of the equipment of this intermediate counting point 13. If the verification result is positive, the transmitter of the on-board transceiver 20 of the locomotive 19 transmits an information packet containing the locomotive number 19 to the stationary transceiver unit 14 , the call number of locomotive devices for data transmission via GSM communication, the number of axes in the composition and permission to axle count. In the verification process, the equipment of the locomotive 19 uses information about the coordinate of the intermediate counting point 13 from the electronic route map and about its coordinate determined by the satellite navigation device (not shown) of the central on-board device 22 for controlling the movement of rolling stock. If there are any errors in receiving information packets, the information packets are retransmitted. After the exchange of information, the transmitter of the airborne transceiver 20 begins to transmit a carrier signal of a low-power digital radio communication channel, the degree of approximation of the locomotive is estimated by the level of received power of which at the intermediate counting point 13. Since the transmission speed through the low-power digital radio channel reaches tens of kilobods, and the reliable communication range is 1-2 kilometers, a reliable radio session between the intermediate counting station 13 and the locomotive 19 approaching it ends in 1-3 seconds, i.e. tens of seconds before the locomotive 19 passes the intermediate section 12 with the intermediate counting point 13. To reduce the battery power consumption at this time, the stationary transceiver unit 14 again goes into standby mode with low consumption, and enters the standby mode for receiving and transmitting only at a given level carrier of the received signal. If the locomotive stops without having passed the intermediate counting point 13, the carrier transfer stops, so that the equipment of the intermediate counting point 13 returns to standby mode with low current consumption. This algorithm allows using a small battery (for example, Tadiran TL-5135 with a voltage of 3.6 V, a capacity of 1700 mAh, a range of operating temperatures of -55 ° C + 85 ° C, and a self-discharge time of 10 years) to ensure long-term operation of the equipment of the intermediate counting point 13 without recharging the battery. The absence of the need for frequent recharging of the battery eliminates the need for wires for supplying power to the intermediate counting points 13, which provides a significant advantage of the claimed system compared to such well-known systems with intermediate counting points of axes, such as microprocessor-based semi-automatic blocking of the development of the Scientific and Production Center “Promelectronics” of Ural State Transport University. The use of a low-power digital radio channel significantly reduces the cost of the equipment of the intermediate counting point 13 due to the small size and cost of the equipment components. To preserve these advantages, a passive wheel passage sensor 17 (such as a rail pedal) is used, which consumes electricity from the output of the microcontroller 15 only during axle counting. In turn, the microcontroller 15 and the transceiver unit 14 are put into active mode from the standby mode with a very low current consumption when the transceiver unit 14 receives a radio signal of a certain frequency from the locomotive 19 and exceeds a predetermined power level. The active mode of the transceiver unit 14 and the microcontroller 15 is maintained only during their interaction with the passing locomotive 19. Various microcontrollers are produced with standby current consumption at the level of several microamps (for example, the MSP430 series) and low-power transceiver microcircuits with the function of switching from the mode with micro current consumption in the mode of reception and transmission from the radio signal. For example, the CC1101 chip with the wake up on radio function is available. The CC1101 chip performs in the transceiver unit 14 the functions of the transceiver ISM radio range 330-440 MHz. The CC1101 chip with a given frequency (for a short time) by the signal of the internal timer performs a quick check of the radio broadcast for the presence of a radio signal with a given frequency and level. If there is no such signal, then it again goes into "sleep mode". The average current consumption of the chip in this mode is 10-15 microamps. The use of such components with battery power such as TL-5135 allows you to ensure the operation of battery 24 without recharging for 2.5-5 years. When passing over a passive sensor 17 of each train wheel, the sensor is triggered by the deflection of the rail and breaks the control signal generated by the microcontroller 15 during its active mode of operation. This sensor 17 creates a pause in the pilot signal. The microcontroller 15 counts the number of these pauses, filters out random noise by duration and compares the calculated number of pauses with the expected number of axles in the train. If there is a coincidence and then, within a predetermined period of time, the passive sensor 17 is stopped, the stationary transceiver unit 14 transmits to the locomotive 19 a packet of information containing the complete train tracking code signal and also the actual (counted by microcontroller 15) number of axes. To save energy of the battery 24 from the locomotive 19 in a package that activates the operation of the transceiver unit 14, taking into account the speed and plan of its movement at the distance from the intermediate counting station, a command can be sent to change the specified frequency of inclusion of the transceiver unit 14. Locomotive on-board devices use information from the intermediate counting point 13 to monitor the full train. After receiving confirmation from the outgoing locomotive 19 of receiving a packet of information (or not receiving such confirmation), after a specified period of time, the microcontroller 15 puts all the electronics of the counting point 13 into standby mode with micro current consumption. If the train length does not exceed 1000 m, then the stationary transceiver unit 14, made on the basis of the CC1101 chip, can provide reliable communication with the outgoing train without signal relay by approximately 2000 m. In cases of complex terrain, reducing the communication range via a low-power digital short-range radio channel , information about the results of counting axes can be transmitted through a relaying second transceiver (similar to transceiving unit 14) installed in front of the intermediate counting point 13 distance along the train (not shown in the drawing). It is also possible that the equipment uses an intermediate counting point 13 of the GSM transceiver module 23. When using the GSM module, the communication range with the outgoing train increases significantly, but the current consumption also increases. From the point of view of reducing current consumption, when using the GSM module, it is preferable to use a second (additional) battery 25 for its power supply, which is connected in series with the first battery 24. The second DC voltage regulator 26 (unlike the first 27) is controlled by a logical signal from the control output of the microcontroller 15, which controls the power supply to the GSM module, i.e. turns it on only when, using the transceiver unit 14, it is not possible to communicate with the retreating locomotive 19 via a low-power digital radio channel. This solution provides, without additional recharging of batteries with a capacity of 1700 mA · h, the operation of the equipment of the intermediate counting point 13 on inactive railway lines for about one year. Information about the results of axle counting at intermediate counting points 13 is transmitted from the locomotive 19 via the long-distance radio channel to the radio modems 11 of the far-field digital radio communications of adjacent stations and can be further used in supervisory control devices, creating the possibility of coordinate control of trains on the train. Moreover, more than one train can be sent to long hauls, as the proposed system provides increased throughput for long hauls.

Claims (1)

A system for determining the freeness from rolling stock of track sections on a railroad stage, consisting of two half-sets of equipment installed on the counting sections of stations restricting the stage, each half-set of equipment contains rail sensors installed on the control track section of the corresponding counting section, which are connected to the input via a signal former receiver block, the output of which through the interface block with axis counters is connected to a local communication highway, to which an interface unit with electrical centralization, a control unit and an interface unit with a radio channel for long-distance digital radio communication are connected to which a radio modem with an antenna is connected, characterized in that at least one intermediate counting station including a stationary transceiver is located on each of the intermediate sections of the railway section a low-power digital short-range radio channel unit, which further comprises a GSM transceiver module, a control port for a stationary small transceiver unit A digital short-range radio channel is connected to the first port of the microcontroller, the second port of which is connected via the interface to a passive wheel passage sensor, the power inputs of the stationary transceiver unit and the microcontroller are connected to an autonomous power source, which consists of two series-connected batteries connected to the input of the second voltage stabilizer, the output of which is designed to connect to the power input of the transceiver GSM module, the first battery The second battery is connected to the input of the first voltage stabilizer, the output of which is designed to connect to the power inputs of a stationary transceiver unit and a microcontroller, which is connected by a control output to the on / off input of a second voltage stabilizer, and a transceiver device for long and short range digital radio channels is installed on each locomotive of the rolling stock which, through a local highway, is connected to a central on-board device for controlling the movement of a mobile vehicle stav.