WO2024092542A1 - Système de positionnement de train et procédé de positionnement - Google Patents

Système de positionnement de train et procédé de positionnement Download PDF

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Publication number
WO2024092542A1
WO2024092542A1 PCT/CN2022/129171 CN2022129171W WO2024092542A1 WO 2024092542 A1 WO2024092542 A1 WO 2024092542A1 CN 2022129171 W CN2022129171 W CN 2022129171W WO 2024092542 A1 WO2024092542 A1 WO 2024092542A1
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WIPO (PCT)
Prior art keywords
axle
track circuit
axle counting
indoor
counting
Prior art date
Application number
PCT/CN2022/129171
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English (en)
Chinese (zh)
Inventor
李鹏斐
陈强
张健
张伟
赵一鹏
张国军
黄彦东
王婧
李圆红
朱春旭
温情
张雨萌
张珂
姜山
Original Assignee
通号(西安)轨道交通工业集团有限公司北京分公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 通号(西安)轨道交通工业集团有限公司北京分公司 filed Critical 通号(西安)轨道交通工业集团有限公司北京分公司
Priority to PCT/CN2022/129171 priority Critical patent/WO2024092542A1/fr
Publication of WO2024092542A1 publication Critical patent/WO2024092542A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
    • B61K7/16—Positive railway stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L13/00—Operation of signals from the vehicle or by the passage of the vehicle
    • B61L13/04—Operation of signals from the vehicle or by the passage of the vehicle using electrical or magnetic interaction between vehicle and track, e.g. by conductor circuits using special means or special conductors

Definitions

  • the present invention relates to the field of rail transit technology, and more particularly to a train positioning system and a positioning method.
  • the so-called leakage red light band refers to: due to rainy weather and the corrosion of the roadbed by the tunnel, the ballast resistance value in the roadbed is less than the standard value of the ballast resistance. The smaller the ballast resistance value, the greater the leakage current between the two rails, thus causing the track circuit to be idle and a red light band to appear in the rainy and snowy season.
  • the present invention discloses a train positioning system and positioning method to realize the co-cable transmission of axle counting and track circuit, so that the indoor and outdoor transmission channels of the axle counting equipment become dual-channel to redundant communication, so that the axle counting equipment for realizing train positioning can still reliably locate the train when the track circuit is poorly branched or leaks red light band, effectively avoiding the situation where there is a false impression of train occupation in the track section, and improving the train operation efficiency.
  • a train positioning system comprising:
  • a first axle counting sensor is used to be installed at a first axle counting point on one side of the track section, and generates a first axle passing pulse signal when detecting that a train passes through the first axle counting point;
  • a first axle counter outdoor device is connected to the first axle counter sensor, the first track circuit outdoor device and the second track circuit outdoor device respectively, and is used to identify the number of first wheels passing through the first axle counter point according to the first axle passing pulse signal output by the first axle counter sensor;
  • the first axle counting indoor equipment is connected to the first track circuit indoor equipment and the second track circuit indoor equipment respectively;
  • the first axle counting indoor device is connected to the first axle counting outdoor device via a first track circuit cable, and is used to obtain the first wheel number output by the first axle counting outdoor device, wherein the first track circuit cable can simultaneously transmit the first axle passing pulse signal, the axle counting signal and the axle counting power supply signal;
  • a second axle counting sensor is used to be installed at a second axle counting point on the other side of the track section, and generates a second axle passing pulse signal when detecting that a train passes through the second axle counting point;
  • a second axle counter outdoor device is connected to the second axle counter sensor, the third track circuit outdoor device and the fourth track circuit outdoor device respectively, and is used to identify the number of second wheels passing through the second axle counter point according to the second axle passing pulse signal output by the second axle counter sensor;
  • the second axle counting indoor equipment is connected to the third track circuit indoor equipment and the fourth track circuit indoor equipment respectively;
  • the second axle counting indoor device is connected to the second axle counting outdoor device via a second track circuit cable, and is used to obtain the second wheel number output by the second axle counting outdoor device, wherein the second track circuit cable can simultaneously transmit the second axle passing pulse signal, the axle counting signal and the axle counting power supply signal;
  • the indoor host of the axle counting room is connected to the first axle counting indoor device and the second axle counting indoor device, respectively, and is used to obtain the first wheel number output by the first axle counting indoor device and the second wheel number output by the second axle counting indoor device, and determine whether there is a train in the track section based on the size relationship between the first wheel number and the second wheel number.
  • each of the first axle counting outdoor device, the first axle counting indoor device, the second axle counting outdoor device and the second axle counting indoor device is provided with an isolation module;
  • the isolation module arranged inside the first axle counter outdoor device is respectively connected to the first axle counter sensor, the first track circuit outdoor device, the second track circuit outdoor device and the first track circuit cable;
  • the isolation module arranged inside the first axle counting indoor equipment is respectively connected to the first track circuit cable, the first track circuit indoor equipment and the second track circuit indoor equipment;
  • the isolation module arranged inside the second axle counter outdoor device is respectively connected to the second axle counter sensor, the third track circuit outdoor device, the fourth track circuit outdoor device and the second track circuit cable;
  • the isolation module arranged inside the second axle counting indoor equipment is respectively connected to the second track circuit cable, the third track circuit indoor equipment and the fourth track circuit indoor equipment.
  • the structures of the isolation modules provided inside the first axle counting outdoor device, the first axle counting indoor device, the second axle counting outdoor device and the second axle counting indoor device are the same, and the isolation modules include: a track circuit signal unidirectional transmission module connected to the same track circuit cable, a first gating module and a second gating module, wherein the track circuit cable is the first track circuit cable or the second track circuit cable;
  • the track circuit signal unidirectional transmission module is used to present a low impedance to the track circuit signal in the track circuit cable, and is only a transmission channel for the track circuit signal, so that the track circuit signal enters the track circuit indoor equipment;
  • the first gating module is used to provide a transmission channel only for the axle counting signal in the track circuit cable;
  • the second gating module is used to provide a transmission channel only for the axle counting power supply signal in the track circuit cable.
  • the track circuit signal unidirectional transmission module includes: an isolation capacitor and a first inductor connected to each other;
  • the isolation capacitor is used to prevent the axle counter power supply signal from entering the track circuit indoor equipment
  • the first inductor is used to prevent the axle counter signal from entering the track circuit indoor equipment.
  • the first gating module includes: a first LC resonant circuit
  • the first LC resonant circuit is used to prevent the track circuit signal from entering the axle counting system.
  • the second gating module includes: a second inductor and a second LC resonant circuit connected to each other;
  • the second inductor is used to prevent the axle counter signal from entering the axle counter power supply system
  • the second LC resonant circuit is used to prevent the track circuit signal from entering the axle counting power supply system.
  • a closed transmission system RSSP-1 protocol is used between the outdoor axle counting device and the indoor axle counting device to protect the transmitted data at the communication adaptation layer, information management layer and security verification layer, wherein the outdoor axle counting device includes: the first outdoor axle counting device and the second outdoor axle counting device, and the indoor axle counting device includes: the first indoor axle counting device and the second indoor axle counting device.
  • a train positioning method is applied to an indoor host of an axle counting system in the above positioning system, and the positioning method comprises:
  • the determining whether there is a train in the track section based on the magnitude relationship between the first number of wheels and the second number of wheels includes:
  • the present invention discloses a train positioning system and positioning method, the positioning system comprising: a first axle counting sensor, a first axle counting outdoor device, a first axle counting indoor device, a second axle counting sensor, a second axle counting outdoor device, a second axle counting indoor device and an axle counting indoor host, the first axle counting outdoor device and the first axle counting indoor device are connected via a first track circuit cable, the second axle counting outdoor device and the second axle counting indoor device are connected via a second track circuit cable, that is, the axle counting outdoor device and the axle counting indoor device in the present invention are connected via a track circuit cable.
  • the track circuit outdoor equipment connected to the axle counting outdoor equipment is changed from being directly connected to the track circuit cable by means of the axle counting outdoor equipment
  • the track circuit indoor equipment connected to the axle counting indoor equipment is changed from being directly connected to the track circuit cable by means of the axle counting indoor equipment.
  • the track circuit cable can simultaneously transmit the superimposed signal of the track circuit signal, the axle counting signal and the axle counting power supply signal, thereby realizing the co-cable transmission of the axle counting and the track circuit, and turning the indoor and outdoor transmission channels of the axle counting equipment into dual-channel to redundant communication.
  • the axle counting equipment for realizing train positioning can still reliably locate the train when the track circuit branching is poor or the red light band leaks, thereby effectively avoiding the illusion of train occupation in the track section and improving the train operation efficiency.
  • FIG1 is a general design block diagram of a train positioning system disclosed in an embodiment of the present invention.
  • FIG2 is a schematic diagram of the structure of an isolation module disclosed in an embodiment of the present invention.
  • FIG3 is a schematic diagram of a closed transmission system RSSP-1 disclosed in an embodiment of the present invention.
  • FIG4 is a schematic diagram of a RSSP-1 message structure disclosed in an embodiment of the present invention.
  • FIG5 is a flow chart of a train positioning method disclosed in an embodiment of the present invention.
  • An embodiment of the present invention discloses a train positioning system and a positioning method.
  • the positioning system includes: a first axle counting sensor, a first axle counting outdoor device, a first axle counting indoor device, a second axle counting sensor, a second axle counting outdoor device, a second axle counting indoor device and an axle counting indoor host.
  • the first axle counting outdoor device and the first axle counting indoor device are connected via a first track circuit cable
  • the second axle counting outdoor device and the second axle counting indoor device are connected via a second track circuit cable. That is, in the present invention, the axle counting outdoor device and the axle counting indoor device are connected via a track circuit cable.
  • the track circuit outdoor equipment connected to the axle counting outdoor equipment is changed from being directly connected to the track circuit cable by means of the axle counting outdoor equipment
  • the track circuit indoor equipment connected to the axle counting indoor equipment is changed from being directly connected to the track circuit cable by means of the axle counting indoor equipment.
  • the track circuit cable can simultaneously transmit the superimposed signal of the track circuit signal, the axle counting signal and the axle counting power supply signal, thereby realizing the co-cable transmission of the axle counting and the track circuit, and turning the indoor and outdoor transmission channels of the axle counting equipment into dual-channel to redundant communication.
  • the axle counting equipment for realizing train positioning can still reliably locate the train when the track circuit branching is poor or the red light band leaks, thereby effectively avoiding the illusion of train occupation in the track section and improving the train operation efficiency.
  • FIG1 an overall design block diagram of a train positioning system disclosed in an embodiment of the present invention is provided, wherein the positioning system comprises: a first axle counting sensor 11, a first axle counting outdoor device 12, a first axle counting indoor device 13, a second axle counting sensor 14, a second axle counting outdoor device 15, a second axle counting indoor device 16 and an axle counting indoor host 17.
  • the first axle counter sensor 11 is used to be installed at a first axle counter point on one side of the track section, and generates a first axle-crossing pulse signal when detecting that a train passes through the first axle counter point.
  • the axle counter sensor is an axle counting device that detects the passage of wheels. It is an important component of vehicle online monitoring equipment and is widely used in automated systems for detecting vehicles on various lines in railways, steel, and mining.
  • the first axle counter sensor 11 is installed at the first axle counter point of the track section where the train enters, usually on the inner side of the track.
  • the first axle counter sensor 11 detects that the wheel rim of the train passes over it, and at this time generates a first axle passing pulse signal, which is used for subsequent counting of the number of wheels of the train.
  • the first axle counter outdoor device 12 is connected to the first axle counter sensor 11, the first track circuit outdoor device 21 and the second track circuit outdoor device 22 respectively, and is used to identify the first wheel number passing through the first axle counting point according to the first axle passing pulse signal output by the first axle counter sensor.
  • the first axle counting outdoor device 12 is connected to the first track circuit cable 01 .
  • the first track circuit outdoor device 21 is changed from the traditional direct connection to the first track circuit cable 01 to: the first track circuit outdoor device 21 is connected to the first track circuit cable 01 through the first axle counting outdoor device 12, so the first axle counting outdoor device 12 becomes the signal transmission channel between the first track circuit outdoor device 21 and the first track circuit cable 01.
  • the second track circuit outdoor device 22 is changed from the traditional direct connection to the track circuit cable: the second track circuit outdoor device 22 is connected to the track circuit cable through the first axle counting outdoor device 12, so the first axle counting outdoor device 12 becomes the signal transmission channel between the second track circuit outdoor device 22 and the first track circuit cable 01. Therefore, the present invention realizes the transmission of axle counting and track circuit in the same cable.
  • the first axle counting indoor device 13 is connected to the first axle counting outdoor device 12 via a first track circuit cable 01 , and is used to obtain the first wheel number output by the first axle counting outdoor device 12 .
  • the first axle counting indoor device 13 is provided with an axle counting power supply signal by a remote power supply.
  • the first track circuit cable 01 can simultaneously transmit the first axle-crossing pulse signal, the axle-counting signal and the axle-counting power supply signal, and the first axle-crossing pulse signal, the axle-counting signal and the axle-counting power supply signal are in a signal superposition state in the first track circuit cable 01.
  • the axle-counting signal and the axle-counting power supply signal are superimposed, for the axle-counting device, its indoor and outdoor transmission channels are dual-channel redundant communications, thereby further increasing the reliability of the axle-counting device.
  • the axle counting device is a safety device used for checking the occupancy of track sections.
  • the sensors arranged at the entrances and exits of the sections check the number of wheels and judge the status of the sections. Therefore, this function does not depend on the roadbed environment.
  • the axle counting device in the present invention includes: indoor axle counting device and outdoor axle counting device.
  • the first axle counting indoor equipment 13 is connected to the first track circuit indoor equipment 23 and the second track circuit indoor equipment 24 respectively.
  • the first track circuit indoor equipment 23 is changed from the traditional direct connection to the first track circuit cable: the first track circuit indoor equipment 23 is connected to the first track circuit cable 01 through the first axle counting indoor equipment 13. Therefore, the first axle counting indoor equipment 13 becomes the signal transmission channel between the first track circuit indoor equipment 23 and the first track circuit cable 01.
  • the second track circuit indoor equipment 24 is changed from the traditional direct connection to the first track circuit cable: the second track circuit indoor equipment 24 is connected to the first track circuit cable 01 through the first axle counting indoor equipment 13, so the first axle counting indoor equipment 13 becomes the signal transmission channel between the second track circuit indoor equipment 24 and the first track circuit cable 01. Therefore, the present invention realizes the transmission of axle counting and track circuit in the same cable.
  • the second axle counter sensor 14 is used to be installed at a second axle counting point on the other side of the track section, and generates a second axle passing pulse signal when detecting that a train passes through the second axle counting point.
  • the second axle counter sensor 14 is installed at the second axle counter point of the track section where the train enters, usually on the inner side of the track.
  • the second axle counter sensor 14 detects that the wheel flange of the train passes over it, and at this time generates a second axle passing pulse signal for subsequent counting of the number of wheels of the train.
  • first in the first axle counting point and the “second” in the second axle counting point are only used to distinguish the first axle counting point and the second axle counting point as different axle counting points.
  • the second axle counter outdoor device 15 is respectively connected to the second axle counter sensor 14 , the third track circuit outdoor device 25 and the fourth track circuit outdoor device 26 , and is used to identify the number of second wheels passing through the second axle counter point according to the second axle crossing pulse signal output by the second axle counter sensor 14 .
  • the second axle counting outdoor device 15 is connected to the second track circuit cable 02 .
  • the third track circuit outdoor device 25 is changed from the traditional direct connection to the second track circuit cable 02 to: the third track circuit outdoor device 25 is connected to the second track circuit cable 02 through the second axle counting outdoor device 15. Therefore, the second axle counting outdoor device 15 becomes the signal transmission channel between the third track circuit outdoor device 25 and the second track circuit cable 02.
  • the fourth track circuit outdoor equipment 26 is changed from the traditional direct connection to the second track circuit cable 02 to: the fourth track circuit outdoor equipment 26 is connected to the second track circuit cable 02 through the second axle counting outdoor equipment 15, so the second axle counting outdoor equipment 15 becomes the signal transmission channel between the fourth track circuit outdoor equipment 26 and the second track circuit cable 02.
  • the second axle counting indoor equipment 16 is connected to the third track circuit indoor equipment 27 and the fourth track circuit indoor equipment 28 respectively.
  • the second axle counting indoor equipment 16 is provided with an axle counting power supply signal by a remote power supply.
  • the second axle counting indoor device 16 is connected to the second axle counting outdoor device 15 via a second track circuit cable 02, and is used to obtain the second wheel number output by the second axle counting outdoor device 15, wherein the second track circuit cable 02 can simultaneously transmit the second axle passing pulse signal, axle counting signal and axle counting power supply signal.
  • the third track circuit indoor equipment 27 is changed from the traditional direct connection to the second track circuit cable 02 to: the third track circuit indoor equipment 27 is connected to the second track circuit cable 02 through the second axle counting indoor equipment 16. Therefore, the second axle counting indoor equipment 16 becomes the signal transmission channel between the third track circuit indoor equipment 27 and the second track circuit cable 02.
  • the fourth track circuit indoor equipment 28 is changed from the traditional direct connection to the second track circuit cable 02 to: the third track circuit indoor equipment 27 is connected to the second track circuit cable 02 through the second axle counting indoor equipment 16. Therefore, the second axle counting indoor equipment 16 becomes the signal transmission channel between the fourth track circuit indoor equipment 28 and the second track circuit cable 02.
  • the indoor host 17 of the axle counting room is connected to the first indoor axle counting device 13 and the second indoor axle counting device 16 respectively, and is used to obtain the first wheel number output by the first indoor axle counting device 13 and the second wheel number output by the second indoor axle counting device 16, and determine whether there is a train in the track section based on the size relationship between the first wheel number and the second wheel number.
  • the first axle counter sensor 11 and the second axle counter sensor 14 are respectively installed on both sides of the track area.
  • the first wheel number is the number of wheels of the train entering the track area
  • the second wheel number is the number of wheels of the train leaving the track area.
  • the present invention discloses a train positioning system, comprising: a first axle counting sensor 11, a first axle counting outdoor device 12, a first axle counting indoor device 13, a second axle counting sensor 14, a second axle counting outdoor device 15, a second axle counting indoor device 16 and an axle counting indoor host 17.
  • the first axle counting outdoor device 12 and the first axle counting indoor device 13 are connected via a first track circuit cable 01
  • the second axle counting outdoor device 15 and the second axle counting indoor device 16 are connected via a second track circuit cable 02. That is, in the present invention, the axle counting outdoor device and the axle counting indoor device are connected via a track circuit cable.
  • the track circuit outdoor equipment connected to the axle counting outdoor equipment is changed from being directly connected to the track circuit cable by means of the axle counting outdoor equipment
  • the track circuit indoor equipment connected to the axle counting indoor equipment is changed from being directly connected to the track circuit cable by means of the axle counting indoor equipment.
  • the track circuit cable can simultaneously transmit the superimposed signal of the track circuit signal, the axle counting signal and the axle counting power supply signal, thereby realizing the co-cable transmission of the axle counting and the track circuit, and turning the indoor and outdoor transmission channels of the axle counting equipment into dual-channel to redundant communication.
  • the axle counting equipment for realizing train positioning can still reliably locate the train when the track circuit branching is poor or the red light band leaks, thereby effectively avoiding the illusion of train occupation in the track section and improving the train operation efficiency.
  • first axle counting outdoor device 12 the first axle counting indoor device 13 , the second axle counting outdoor device 15 and the second axle counting indoor device 16 are each provided with an isolation module therein.
  • the isolation module disposed inside the first axle counter outdoor device 12 is respectively connected to the first axle counter sensor 11 , the first track circuit outdoor device 21 , the second track circuit outdoor device 22 and the first track circuit cable 01 .
  • the isolation module arranged inside the first axle counting indoor equipment 13 is connected to the first track circuit cable 01, the first track circuit indoor equipment 23 and the second track circuit indoor equipment 24 respectively.
  • the isolation module arranged inside the second axle counter outdoor device 15 is respectively connected to the second axle counter sensor 14, the third track circuit outdoor device 25, the fourth track circuit outdoor device 26 and the second track circuit cable connection 02.
  • the isolation module arranged inside the second axle counting indoor equipment 16 is connected to the second track circuit cable 02 , the third track circuit indoor equipment 27 and the fourth track circuit indoor equipment 28 respectively.
  • the present invention realizes the co-cable transmission of axle counter and track circuit.
  • the structures of the isolation modules provided inside the first axle counting outdoor device 12 , the first axle counting indoor device 13 , the second axle counting outdoor device 15 and the second axle counting indoor device 16 are all the same.
  • an embodiment of the present invention discloses a structural schematic diagram of an isolation module, which includes: a track circuit signal unidirectional transmission module 31 , a first gating module 32 and a second gating module 33 .
  • the track circuit signal unidirectional transmission module 31, the first gating module 32 and the second gating module 33 are connected to the same track circuit cable, which can be the first track circuit cable 01 or the second track circuit cable 02 in Figure 1.
  • the track circuit signal unidirectional transmission module 31 is used to present low impedance to the track circuit signal in the track circuit cable and is only a transmission channel for the track circuit signal, so that the track circuit signal enters the track circuit indoor equipment.
  • the first gating module 32 is used to provide a transmission channel only for the axle counting signal in the track circuit cable.
  • the second gating module 33 is used to provide a transmission channel only for the axle counting power supply signal in the track circuit cable.
  • the track circuit signal unidirectional transmission module 31 includes: an isolation capacitor and a first inductor connected to each other;
  • the isolation capacitor is used to prevent the axle counter power supply signal from entering the track circuit indoor equipment
  • the first inductor is used to prevent the axle counter signal from entering the track circuit indoor equipment.
  • the main function of the track circuit signal unidirectional transmission module 31 is to present low impedance to the track circuit signal, allowing the track circuit signal to pass through, while preventing the axle counter power supply signal from flowing to the track circuit indoor equipment through isolation capacitors, and blocking the axle counter signal from flowing to the track circuit indoor equipment through inductance.
  • the first gating module 32 includes: a first LC resonant circuit
  • the first LC resonant circuit is used to prevent the track circuit signal from entering the axle counting system.
  • the main function of the first gating module 32 is to provide a signal transmission channel for the axle counting signal, and at the same time block the track circuit signal from entering the axle counting system through the first LC resonant circuit.
  • the second gating module 33 includes: a second inductor and a second LC resonant circuit connected to each other;
  • a second inductor used to prevent the axle counter signal from entering the axle counter power supply system
  • the second LC resonant circuit is used to prevent the track circuit signal from entering the axle counting power supply system.
  • the main function of the second gating module 33 is to provide a transmission channel for the power supply signal, and at the same time prevent the axle counting signal from entering the axle counting power supply system through inductance, and prevent the track circuit signal from entering the axle counting power supply system through the second LC resonant circuit.
  • the track circuit signal unidirectional transmission module 31 the first gating module 32 and the second gating module 33 all have specific signal unidirectional transmission performance.
  • the axle counter signal, the track circuit signal and the axle counter power supply signal enter the isolation module through different interfaces to form a superimposed signal, and finally output through the track circuit cable.
  • the isolation module has a bidirectional transmission characteristic, that is, after the superimposed signal enters the isolation module, the signals with different characteristics will flow to their respective interfaces, thus realizing the transmission of the axle counter and the track circuit in the same cable and core.
  • the closed transmission system RSSP-1 protocol is used between the outdoor axle counting equipment and the indoor axle counting equipment to protect the transmitted data at the communication adaptation layer, information management layer and security verification layer.
  • the outdoor axle counting equipment includes: a first outdoor axle counting equipment 12 and a second outdoor axle counting equipment 15, and the indoor axle counting equipment includes: a first indoor axle counting equipment 13 and a second indoor axle counting equipment 14.
  • the authenticity, correctness, timeliness and sequence of the axle number information frame are checked at the receiving end. Since the data transmission between the axle counting outdoor device and the axle counting indoor device is bidirectional, the receiving end can be the axle counting outdoor device or the axle counting indoor device.
  • FIG3 a schematic diagram of a closed transmission system RSSP-1 is shown in FIG3 , where device 1 and device 2 are two devices capable of bidirectional data transmission, for example, device 1 is an outdoor axle counting device, and device 2 is an indoor axle counting device.
  • Both device 1 and device 2 include an application, a security function module and a communication function module.
  • the application in device 1 transmits application layer data with the application in device 2 through the A interface
  • the application in device 1 and the security function module transmit data through the B interface
  • the security function module in device 1 and the security function module in device 2 transmit security-related protocol data through the C interface
  • the security function module in device 1 and the communication function module transmit data through the D interface
  • the communication function module in device 1 and the communication function module in device 2 transmit protocol data through the E interface.
  • the message structure of RSSP-1 is shown in Figure 4, including: message header, security check field, user data packet and message tail CRC16, among which, the message header is checked and processed by the communication function module and the security function module, the security check field is checked and processed by the security function module, and the user data packet is checked and processed by the application.
  • the indoor axle counting device is the sending end; conversely, when the outdoor axle counting device is the sending end, the indoor axle counting device is the receiving end.
  • the principle of secure data interaction between the receiving end and the sending end is: the receiving end must detect the timing of the RSD from the sending end in real time. If there is a timing error, the timing correction mechanism will be triggered, and RSD will be accepted only after the timing correction is restored (such as: B ⁇ ->A). If the current timing is normal, it is only necessary to send RSD in real time in one direction without triggering the timing correction (such as: B ⁇ ->C).
  • the maximum timing deviation that can be tolerated by the RSD message is 2 seconds (if the system cycle is 250ms, the cycle number is 0x08).
  • the request synchronization time calibration mechanism needs to be started.
  • the effective retention time of the safety data value is 3 seconds (if the system cycle is 250ms, the cycle number is 0x0C).
  • the safety data bit needs to be directed to the safety value "0".
  • OFDM orthogonal frequency division multiplexing
  • the axis information modulated by OFDM has high anti-interference ability.
  • the communication frequency band is 500KHz, which is far away from the track circuit communication signal frequency.
  • RSSP-1 and OFDM technology have high requirements for real-time and correctness in indoor and outdoor communication of axle counting equipment after common cable transmission. Therefore, based on the functions of the original axle counting equipment, the advantages of RSSP-1 and OFDM technology are combined to integrate these two technologies into the axle counting system, thereby further ensuring the stability and reliability of the axle counting system.
  • the present invention also discloses a train positioning method.
  • the positioning method is applied to the host in the axle counting room in the embodiment shown in FIG1 .
  • the positioning method includes:
  • Step S101 obtaining a first wheel number output by a first axle counting indoor device and a second wheel number output by a second axle counting indoor device;
  • Step S102 Determine whether there is a train in the track section based on the relationship between the first number of wheels and the second number of wheels.
  • the outdoor axle counting device and the indoor axle counting device are connected through the track circuit cable, so that the outdoor track circuit device connected to the outdoor axle counting device is changed from the traditional direct connection to the track circuit cable to the connection to the track circuit cable through the outdoor axle counting device, and the indoor track circuit device connected to the indoor axle counting device is changed from the traditional direct connection to the track circuit cable to the connection to the track circuit cable through the indoor axle counting device, so that the track circuit cable can simultaneously transmit the superimposed signal of the track circuit signal, the axle counting signal and the axle counting power supply signal, realize the co-cable transmission of the axle counting and the track circuit, and make the indoor and outdoor transmission channels of the axle counting device become dual-channel to redundant communication, so that the axle counting device for realizing train positioning can still reliably locate the train through the first number of wheels determined by the first axle counting indoor device and the second number of wheels determined by the second axle counting indoor device when the track circuit branch is poor or the red light band leaks, thereby effectively avoiding the situation where there is a false

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  • Train Traffic Observation, Control, And Security (AREA)

Abstract

L'invention concerne un système de positionnement de train et un procédé de positionnement. Le système de positionnement comprend : un premier capteur de comptage d'essieux (11), un premier dispositif extérieur de comptage d'essieux (12), un premier dispositif intérieur de comptage d'essieux (13), un second capteur de comptage d'essieux (14), un deuxième dispositif extérieur de comptage d'essieux (15), un deuxième dispositif intérieur de comptage d'essieux (16) et une unité principale intérieure de comptage d'essieux (7), le premier dispositif extérieur de comptage d'essieux (12) étant connecté au premier dispositif intérieur de comptage d'essieux (13) au moyen d'un premier câble de circuit de voie (01) et le deuxième dispositif extérieur de comptage d'essieux (15) étant connecté au deuxième dispositif intérieur de comptage d'essieux (16) au moyen d'un second câble de circuit de voie (02). Un dispositif extérieur de circuit de voie est modifié pour connecter un câble de circuit de voie au moyen d'un dispositif extérieur de comptage d'essieux et un dispositif intérieur de circuit de voie est modifié pour connecter le câble de circuit de voie au moyen d'un dispositif intérieur de comptage d'essieux, de telle sorte que le câble de circuit de voie peut transmettre un signal superposé à partir d'un signal de circuit de voie, d'un signal de comptage d'essieux et d'un signal de source d'alimentation de comptage d'essieux, de façon à réaliser une transmission co-câblée d'un comptage d'essieux et d'un circuit de voie, de telle sorte qu'un dispositif de comptage d'essieux peut toujours positionner un train lorsqu'un circuit de voie a un mauvais aiguillage ou a une bande de lumière rouge provoquée par une fuite.
PCT/CN2022/129171 2022-11-02 2022-11-02 Système de positionnement de train et procédé de positionnement WO2024092542A1 (fr)

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WO2008025414A2 (fr) * 2006-08-29 2008-03-06 Siemens Schweiz Ag Procédé et dispositif destinés à un système adaptatif modulaire de commande et de contrôle d'installations de sécurisation de chemin de fer
CN101712329A (zh) * 2009-03-17 2010-05-26 南宁铁路局 重力感应式计轴设备及用其检测轨道区段状态的方法
EP3075625A1 (fr) * 2015-03-30 2016-10-05 Pintsch Tiefenbach GmbH Procede et systeme destine a la securisation dynamique de voie dans un embranchement ferroviaire multi-voies
CN108974046A (zh) * 2018-08-23 2018-12-11 深圳科安达电子科技股份有限公司 一种计轴轨道电路系统
CN109131437A (zh) * 2018-08-23 2019-01-04 深圳科安达电子科技股份有限公司 计轴轨道电路系统
CN109159798A (zh) * 2018-08-23 2019-01-08 深圳科安达电子科技股份有限公司 一种用轨道电路信号电缆传输计轴信号的方法
EP3865370A1 (fr) * 2020-02-12 2021-08-18 Siemens Rail Automation S.A.U. Rail intelligent et procédé pour déterminer l'état d'occupation d'une section de voie

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WO2008025414A2 (fr) * 2006-08-29 2008-03-06 Siemens Schweiz Ag Procédé et dispositif destinés à un système adaptatif modulaire de commande et de contrôle d'installations de sécurisation de chemin de fer
CN101712329A (zh) * 2009-03-17 2010-05-26 南宁铁路局 重力感应式计轴设备及用其检测轨道区段状态的方法
EP3075625A1 (fr) * 2015-03-30 2016-10-05 Pintsch Tiefenbach GmbH Procede et systeme destine a la securisation dynamique de voie dans un embranchement ferroviaire multi-voies
CN108974046A (zh) * 2018-08-23 2018-12-11 深圳科安达电子科技股份有限公司 一种计轴轨道电路系统
CN109131437A (zh) * 2018-08-23 2019-01-04 深圳科安达电子科技股份有限公司 计轴轨道电路系统
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EP3865370A1 (fr) * 2020-02-12 2021-08-18 Siemens Rail Automation S.A.U. Rail intelligent et procédé pour déterminer l'état d'occupation d'une section de voie

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