CN113973046A - Wired safety data network and train-ground communication mobile block signal network for train operation station - Google Patents
Wired safety data network and train-ground communication mobile block signal network for train operation station Download PDFInfo
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Abstract
The invention provides a wired safety data network of a train operation station and a train-ground communication mobile blocking signal network, wherein the wired safety data network comprises a first inter-station switch, a first network center switch, a second inter-station switch and a second network center switch, and each station in the signal coverage of a train operation signal system is provided with the first inter-station switch and the second inter-station switch; constructing a first ring network based on a ring network formed by first inter-station switches and a first network center switch, and constructing a second ring network based on a ring network formed by second inter-station switches and a second network center switch; station data acquired by the first network center switch and the second network center switch are used for outputting a dual-network ground control signal of each station. The data network and the mobile block signal network provided by the invention realize the guarantee of data transmission reliability, and the 4G upgrade of system equipment also improves the communication speed and the communication capacity and reduces the electromagnetic interference from a telecommunication company.
Description
Technical Field
The invention relates to the technical field of rail transit communication networks, in particular to a wired safety data network and a train-ground communication mobile blocking signal network for a train operation station.
Background
For the existing railway communication system, the existing fixed block equipment faces the overhaul period, the equipment failure rate is improved year by year, the transportation capacity of the existing fixed block equipment cannot meet the requirement of rapid increase of the railway transportation volume, and a set of train operation control system which can ensure the system safety, effectively improve the transportation capacity and solve the actual problem of current transportation production is urgently required to be upgraded.
The freight railway generally adopts a GSM-R-based digital mobile communication system; with the continuous development of railway services, the requirement on the communication carrying capacity is higher and higher, and at present, the GSM-R can not completely meet the development requirement on railway communication service carrying. The highest communication rate of GSM-R is only 114kbps, and the network is easily influenced by the electromagnetic interference of a telecommunication company due to the setting of the frequency band. At present, a railway communication network capable of increasing the communication rate is urgently needed, and the reliability of data interaction needs to be ensured while the communication rate is ensured.
Therefore, how to avoid the situations that the existing railway communication system has a low communication rate and is easily subjected to electromagnetic interference of telecommunication companies, and the reliability of data transmission during train-ground communication is not guaranteed is still a problem to be solved by those skilled in the art.
Disclosure of Invention
The invention provides a wired safety data network and a train-ground communication mobile blocking signal network for a train operation station, which are used for solving the problems that the existing railway communication system is low in communication speed and easy to be subjected to electromagnetic interference of a telecommunication company, and the reliability of data transmission during train-ground communication is not guaranteed.
The invention provides a wired safety data network of a train operation station, which comprises a first inter-station switch, a first network center switch, a second inter-station switch and a second network center switch, wherein,
the number of the first inter-station switches and the number of the second inter-station switches are preset numbers, and each station in the signal coverage of the train operation signal system is provided with one first inter-station switch and one second inter-station switch;
constructing a first ring network based on the ring network formed by the preset number of first inter-station switches and the first network center switch, and constructing a second ring network based on the ring network formed by the preset number of second inter-station switches and the second network center switch;
station data acquired by the first network center switch and the second network center switch are used for outputting the dual-network ground control signal of each station.
According to the wired safety data network of the train operation station provided by the invention, the operation of the first ring network comprises the following steps:
selecting a first main switch of the first ring network based on a preset rule, wherein the first main switch is used for opening a standby channel in the first ring network according to an index optimal rule when detecting that any path of the first ring network fails;
correspondingly, the operation of the second ring network includes:
and selecting a second main switch of the second ring network based on the preset rule, wherein the second main switch is used for opening a standby channel in the second ring network according to the index optimal rule when detecting that any path of the second ring network fails.
According to the wired safety data network of the train operation station provided by the invention, the standby access in the first ring network is opened according to the optimal index rule, and the wired safety data network comprises the following steps:
deleting fault break points, determining a first network index value when other paths in the first ring network set break points, and selecting the path with the optimal value in the first network index value to set a new break point to form a standby path;
correspondingly, the opening the standby path in the second ring network according to the index optimization rule includes:
and deleting the fault break points, determining second network index values when other paths in the second ring network set break points, and selecting the path with the optimal value in the second network index values to set a new break point to form a standby path.
The invention also provides a train-ground communication mobile blocking signal network, which comprises any one of the train operation station wired safety data network, a ground LTE (Long Term Evolution) interface subsystem, an LTE core network and a vehicle-mounted LTE communication device, wherein,
the ground LTE interface subsystem is used for receiving a dual-network ground control signal sent by the wired safety data network, sending the dual-network ground control signal to the LTE core network in an isolated mode, and receiving a dual-network train signal returned by the LTE core network;
the LTE core network is used for receiving the dual-network ground control signal sent by the ground LTE interface subsystem, transmitting the dual-network ground control signal to the vehicle-mounted LTE communication equipment in an isolated mode by adopting a 4G communication protocol, and receiving the dual-network train signal returned by the vehicle-mounted LTE communication equipment;
the vehicle-mounted LTE communication equipment is used for receiving the ground control signal forwarded by the LTE core network and responding to a corresponding dual-network train signal to return to the LTE core network;
the ground control signals of different networks in the dual-network ground control signals are isolated from each other, and the train signals of different networks in the dual-network train signals are isolated from each other.
According to the train-ground communication mobile blocking signal network provided by the invention, the ground LTE interface subsystem comprises network connection equipment, network safety equipment and access switching equipment, wherein,
the network connection equipment is used for receiving the dual-network ground control signal sent by the wired safety data network, forwarding the dual-network ground control signal to the network safety equipment and receiving the dual-network train signal returned by the network safety equipment;
the network safety equipment is used for receiving the dual-network ground control signal sent by the network connection equipment, sending the dual-network ground control signal to the access switching equipment after safety check, and receiving the dual-network train signal returned by the access switching equipment;
the access switching equipment is used for receiving the dual-network ground control signal sent by the network security equipment, forwarding the dual-network ground control signal to the LTE core network, and receiving the dual-network train signal returned by the LTE core network.
According to the train-ground communication mobile block signal network provided by the invention, the network connection equipment receives the dual-network ground control signal sent by the wired safety data network, and the method specifically comprises the following steps:
the network connection equipment receives the dual-network ground control signal from the wired safety data network forwarded by the mobile block ground train control system;
the mobile block ground train control system comprises a first RBC switch, a second RBC switch and a maintenance terminal, wherein the first RBC switch is used for receiving a first single-network ground control signal output by the first network center switch, the second RBC switch is used for receiving a second single-network ground control signal output by the second network center switch, and the maintenance terminal is used for collecting signals of trackside equipment.
According to the train-ground communication mobile block signal network provided by the invention, the network connection equipment is connected with the mobile block ground train control system in an Ethernet mode, and a standard FE interface is adopted as a connection interface.
According to the train-ground communication mobile blocking signal network provided by the invention, the access switching equipment is connected with the LTE core network in an Ethernet mode, and a standard FE interface is adopted as a connection interface.
According to the vehicle-ground communication mobile block signal network provided by the invention, the vehicle-mounted LTE communication equipment is also used for receiving a dual-network ground control signal of a 4G communication protocol sent by the LTE core network, converting the dual-network ground control signal into a dual-network ground control signal of a 2G communication protocol and sending the dual-network ground control signal to the vehicle-mounted VOBC;
the antenna feeder interface type in the vehicle-mounted LTE communication equipment is TNC female.
According to the train-ground communication mobile blocking signal network provided by the invention, the vehicle-mounted LTE communication equipment is connected with the VOBC through the Ethernet, and a connection interface adopts a 4-core socket with the specification of M12 mother D coding.
The invention provides a wired safety data network and a train-ground communication mobile block signal network of a train operation station, wherein a first inter-station switch and a second inter-station switch are arranged at each station in the signal coverage of a train operation signal system to form two looped networks to construct the wired safety data network, the stations are connected and administered through two redundant optical fiber backbone looped networks, the wired safety data network extends along a line to form a redundant wired system of the whole train-ground communication mobile block signal network, the train-ground communication mobile block signal network also comprises a ground LTE interface subsystem, an LTE core network and a vehicle-mounted LTE communication device, under the condition that the wired safety data network is a redundant double network, the original ground LTE interface subsystem, the LTE core network and the vehicle-mounted LTE communication device are also multiplexed and transformed to form a redundant train-ground communication system architecture, a two-way interface machine is designed to realize the newly-added wired signal network and TD-LTE (Division multiplexing Long Term Evolution), time division duplex long term evolution) network isolation, finally realizing continuous two-way data communication between the trackside equipment and the vehicle-mounted equipment on the positive line, and changing the original wired communication into the existing 4G communication protocol also greatly improves the data transmission rate and the transmission capacity. Therefore, the wired safety data network of the train operation station and the train-ground communication mobile blocking signal network provided by the invention realize the guarantee of data transmission reliability through dual-network redundancy, correspondingly, 4G upgrade is carried out on equipment in the system, the communication rate and the communication capacity are also improved, and the electromagnetic interference from a telecommunication company is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a wired safety data network of a train operation station provided by the invention;
FIG. 2 is a schematic structural diagram of a train-ground communication mobile block signal network provided by the invention;
fig. 3 is one of the schematic architectures of the terrestrial LTE interface subsystem provided in the present invention;
fig. 4 is a second schematic diagram of the architecture of the terrestrial LTE interface subsystem according to the present invention;
fig. 5 is a third schematic diagram of the architecture of the terrestrial LTE interface subsystem according to the present invention;
FIG. 6 is a schematic structural diagram of a train-ground communication mobile block signal network provided by the invention;
fig. 7 is a schematic diagram of a communication process of signal equipment between different LTE access areas according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The existing railway communication system has the problems of low communication speed, easy electromagnetic interference of telecommunication companies and no guarantee on data transmission reliability during train-ground communication. A wired safety data network for a train operating station of the present invention is described below with reference to fig. 1. Fig. 1 is a schematic structural diagram of a wired safety data network of a train operation station provided by the present invention, as shown in fig. 1, the safety data network includes a first inter-station switch 101, a first hub switch 102, a second inter-station switch 103, and a second hub switch 104, wherein,
the number of the first inter-station switch 101 and the number of the second inter-station switches 103 are both preset numbers, and each station in the signal coverage of the train operation signal system is provided with one first inter-station switch 101 and one second inter-station switch 103;
constructing a first ring network 105 based on the ring network composed of the preset number of first inter-station switches 101 and the first network center switch 102, and constructing a second ring network 106 based on the ring network composed of the preset number of second inter-station switches 103 and the second network center switch 104;
the station data collected by the first network center switch 102 and the second network center switch 104 are used to output the dual-network ground control signal of each station.
Specifically, the wired safety data network of the train operation station provided by the invention is an important component of the whole train-ground communication mobile blocking signal network, and the performance index of the wired safety data network needs to meet the requirement of an automatic train control system. As shown in fig. 1, the safety data network multiplexing line has existing equipment, and the wired network part is built in a double-ring inter-station jumper connection mode in consideration of line characteristics, and stations in linear distribution are connected in a loop mode, so that a switch configured on each station is connected with switches configured on two adjacent stations, and therefore a point-to-point link exists, but the point-to-point link always operates in a unidirectional mode, namely, a ring network is not completely looped but has a breakpoint, so that a network storm is prevented, materials are saved, and recovery time is shortened. It should be noted here that each station is configured with a first inter-station switch and a second inter-station switch, as shown in fig. 1, two switches in the same dashed box are configured on the same station, a switch depicted by thick solid lines in the dashed box in fig. 1 is a first inter-station switch 101 in the first ring network 105, a switch depicted by thin solid lines in the dashed box is a second inter-station switch 103 in the second ring network 106, connection lines connected to each switch in the first ring network 105 are also thick solid lines, connection lines connected to each switch in the second ring network 106 are thin solid lines, the first ring network 105 and the second ring network 106 are independent of each other, and after acquiring trackside device data in the station, the first inter-station switch and the second inter-station switch of each station transmit the trackside device data to respective corresponding network center switches through paths in the respective ring networks, for the first hub switch 102 and the second hub switch to output ground control signals within their respective networks. It should be noted here that, in the industry, two networks in the dual-network redundancy system are generally referred to as a red subnetwork and a blue subnetwork respectively, that is, the red subnetwork is equivalent to the aforementioned first ring network, the blue subnetwork is equivalent to the aforementioned second ring network, hardware and software of a wired safety data network at a train operation station are both designed according to standardized functional modules, the wired safety data network employs a red-blue dual-network redundancy architecture, and the red-blue subnetworks are isolated from each other.
According to the wired safety data network for the train operation stations, a first inter-station switch and a second inter-station switch are configured at each station in the signal coverage of a train operation signal system to form two looped networks to construct the wired safety data network, the stations under the jurisdiction are connected through two redundant optical fiber backbone looped networks, a bidirectional interface machine is designed to realize the isolation of the newly added wired signal network and a TD-LTE network, and finally, the continuous bidirectional data communication between trackside equipment and vehicle-mounted equipment on the positive line is realized. Therefore, the wired safety data network for the train operation station provided by the invention realizes the guarantee of data transmission reliability through dual-network redundancy.
Based on the above embodiment, in the wired security data network of the train operation station, the operation of the first ring network includes:
selecting a first main switch of the first ring network based on a preset rule, wherein the first main switch is used for opening a standby channel in the first ring network according to an index optimal rule when detecting that any path of the first ring network fails;
correspondingly, the operation of the second ring network includes:
and selecting a second main switch of the second ring network based on the preset rule, wherein the second main switch is used for opening a standby channel in the second ring network according to the index optimal rule when detecting that any path of the second ring network fails.
Specifically, a main switch is elected through an algorithm in a single network, and the main switch is used for monitoring the running state of the ring network and determining a backup path. After the backup path is determined, the ring network is degenerated into a bus topology structure at the moment, and the network is in a normal state. Once a path on any ring network has a fault, the switches on two sides of the line can immediately detect that the line is interrupted and immediately send information to the main switch, and the main switch opens the standby path and informs all switches of relearning, and the network is normal after convergence. It should be noted here that when any path of any ring network fails, the breakpoint is hit according to the index optimization rule, so that the new breakpoint hit can ensure that the network index of the ring network after the breakpoint is updated is optimal. Therefore, the embodiment of the invention provides the functions of the main switch in the ring network and the specific mode for determining the standby path by the main switch.
Based on the above embodiment, in the wired security data network of the train operation station, the opening of the standby access in the first ring network according to the optimal index rule includes:
deleting fault break points, determining a first network index value when other paths in the first ring network set break points, and selecting the path with the optimal value in the first network index value to set a new break point to form a standby path;
correspondingly, the opening the standby path in the second ring network according to the index optimization rule includes:
and deleting the fault break points, determining second network index values when other paths in the second ring network set break points, and selecting the path with the optimal value in the second network index values to set a new break point to form a standby path.
Specifically, the method for updating the standby path in the first ring network is to delete an original fault breakpoint in the ring network, and find an update breakpoint under the condition that a preset network index is optimal, where the preset network index may be a parameter that commonly describes network quality, such as network delay, network jitter, and the like; similarly, the second ring network is also processed in the same way. The embodiment of the invention introduces the specific content of the index optimization rule in detail and provides various examples for using the index optimization rule.
Based on the above embodiment, the present invention further provides a mobile block signal network for vehicle-ground communication, and a mobile block signal network for vehicle-ground communication according to the present invention is described below with reference to fig. 2 to 7. Fig. 2 is a schematic structural diagram of a train-ground communication mobile block signal network provided by the present invention, and as shown in fig. 2, the train-ground communication mobile block signal network includes a train operation station wired security data network 201, a ground LTE interface subsystem 202, an LTE core network 203, and a vehicle-mounted LTE communication device 204 described in any of the above embodiments, wherein,
the ground LTE interface subsystem 202 is configured to receive a dual-network ground control signal sent by the wired security data network 201, send the dual-network ground control signal to the LTE core network 203 in an isolated manner, and receive a dual-network train signal returned by the LTE core network 203;
the LTE core network 203 is configured to receive the dual-network ground control signal sent by the ground LTE interface subsystem 202, and transmit the dual-network ground control signal to the vehicle-mounted LTE communication device 204 in an isolated manner by using a 4G communication protocol, and receive the dual-network train signal returned by the vehicle-mounted LTE communication device 204;
the vehicle-mounted LTE communication device 204 is configured to receive the ground control signal forwarded by the LTE core network 203 and respond to a corresponding dual-network train signal to return to the LTE core network 203;
the ground control signals of different networks in the dual-network ground control signals are isolated from each other, and the train signals of different networks in the dual-network train signals are isolated from each other.
Specifically, the arrows between the modules in the train-ground communication mobile block signal network shown in fig. 2 all include two double-headed arrows, where the double-headed arrows with thin solid lines represent the train signals returned by the train-mounted LTE communication device 204 and the station control signals acquired by the first ring network (i.e., red network) that are uploaded, and the double-headed arrows with thick solid lines represent the train signals returned by the train-mounted LTE communication device 204 and the station control signals acquired by the second ring network (i.e., blue network) that are uploaded, and they do not interfere with each other and are transmitted between the modules in the train-ground communication mobile block signal network in a form of multiplexing duplex. The core module in the vehicle-ground communication mobile block signal network is an LTE core network 203, the LTE core network 203 converts a dual-network ground control signal received from the ground LTE interface subsystem 202 from 2G to 4G, and then transmits a first ground control signal acquired in a first ring network and a second ground control signal acquired in a second ring network to the vehicle-mounted LTE communication device 204 through two different network ports to an antenna, respectively, the vehicle-mounted LTE communication device 204 also adopts two feed antennas to respectively receive the first ground control signal and the second ground control signal, and forwards the first ground control signal and the second ground control signal to the vehicle-mounted device after processing the first ground control signal and the second ground control signal through a 4G-to-2G protocol, for example, VOBC, ATP, ATO, and the like. It should be noted here that the ground LTE interface subsystem 202 and the vehicle-mounted LTE communication device 204 are modules for vehicle-ground two ends to directly communicate with the LTE core network 203, and both the ground LTE interface subsystem 202 and the vehicle-mounted LTE communication device 204 are provided with LTE interface devices, that is, TD-LTE devices are multiplexed, a dedicated point of presence (APN) is used to access the network, package encryption of information is performed through dedicated software, and transmission, opposite-end decryption, and forwarding to the connection interface system as needed are performed through TD-LTE.
The train-ground communication mobile block signal network comprises a wired safety data network of a train operation station, wherein each station in the signal coverage of the train operation signal system is provided with a first inter-station switch and a second inter-station switch to form two looped networks to construct the wired safety data network, each station is managed by connecting two redundant optical fiber backbone looped networks, the wired safety data network extends along a line to form a redundant wired system of the whole train-ground communication mobile block signal network, the train-ground communication mobile block signal network also comprises a ground LTE interface subsystem, an LTE core network and a vehicle-mounted LTE communication device, under the condition that the wired safety data network is a redundant double network, the original ground LTE interface subsystem, the LTE core network and the vehicle-mounted LTE communication device are multiplexed and transformed to form a redundant train-ground communication system architecture, and a bidirectional interface machine is designed to realize the isolation of a newly-added wired signal network and a TD-LTE network, finally, continuous two-way data communication between the trackside equipment and the vehicle-mounted equipment is realized on the positive line, and the original wired communication is changed into the existing 4G communication protocol, so that the data transmission rate and the transmission capacity are greatly improved. Therefore, the train-ground communication mobile blocking signal network comprising the wired safety data network of the train operation station realizes the guarantee of data transmission reliability through dual-network redundancy, correspondingly improves the communication speed and the communication capacity by upgrading the equipment in the system by 4G, and reduces the electromagnetic interference from a telecommunication company.
Based on the above embodiments, in the mobile block signal network for train-ground communication, the ground LTE interface subsystem includes a network connection device, a network security device, and an access switching device, wherein,
the network connection equipment is used for receiving the dual-network ground control signal sent by the wired safety data network, forwarding the dual-network ground control signal to the network safety equipment and receiving the dual-network train signal returned by the network safety equipment;
the network safety equipment is used for receiving the dual-network ground control signal sent by the network connection equipment, sending the dual-network ground control signal to the access switching equipment after safety check, and receiving the dual-network train signal returned by the access switching equipment;
the access switching equipment is used for receiving the dual-network ground control signal sent by the network security equipment, forwarding the dual-network ground control signal to the LTE core network, and receiving the dual-network train signal returned by the LTE core network.
Specifically, the ground LTE interface subsystem is composed of an application server, a storage server, a management and maintenance terminal, a firewall, a network switching device, and the like, fig. 3 is one of the schematic structural diagrams of the ground LTE interface subsystem provided by the present invention, the system architecture is as shown in fig. 3, arrows between two adjacent modules in the network connection device 301, the network security device 302, and the access switching device 303 all include two bidirectional arrows, wherein the bidirectional arrow with a thin solid line represents a station control signal acquired by the first ring network (i.e., red network) and a train signal returned by the vehicle-mounted LTE communication device 204, the bidirectional arrow with a thick solid line represents a station control signal acquired by the second ring network (i.e., blue network) and a train signal returned by the vehicle-mounted LTE communication device 204, it is further clear that data transmission between the red and blue double networks in the ground LTE interface subsystem is not interfered with each other, and transmitting among various modules in the ground LTE interface subsystem in a multiplexing duplex mode.
Based on the above embodiment, in the train-ground communication mobile block signal network, the receiving, by the network connection device, the dual-network ground control signal sent by the wired security data network specifically includes:
the network connection equipment receives the dual-network ground control signal from the wired safety data network forwarded by the mobile block ground train control system;
the mobile block ground train control system comprises a first RBC switch, a second RBC switch and a maintenance terminal, wherein the first RBC switch is used for receiving a first single-network ground control signal output by the first network center switch, the second RBC switch is used for receiving a second single-network ground control signal output by the second network center switch, and the maintenance terminal is used for collecting signals of trackside equipment.
Specifically, the ground LTE interface subsystem is composed of an application server, a storage server, a management and maintenance terminal, a firewall, network switching equipment, and the like, fig. 4 is a second schematic diagram of the architecture of the ground LTE interface subsystem provided by the present invention, and a specific system architecture is shown in fig. 4, the system needs to newly set 4 mobile block ground LTE interface equipment cabinets in a machine room, where the cabinet size is 600 × 1000 × 2200mm, and is used to install and deploy 8 sets of mobile block ground LTE interface equipment; and a mobile block ground LTE interface equipment management maintenance terminal 1 is newly arranged in the dispatching room. LTE network access of the communication server in fig. 4: the ground LTE interface equipment provides LTE network access for the mobile block application system and provides a transparent bidirectional data transmission channel between the mobile block application system and the vehicle-mounted terminal; data forwarding: the ground LTE interface equipment adopts a real-time forwarding mechanism to complete the bidirectional transmission of data between the mobile block application system and the vehicle-mounted terminal; and (3) addressing space conversion: and the ground LTE interface equipment completes the conversion of different addressing spaces between the mobile block application system and the LTE network through DNS domain name resolution. The data storage server in fig. 4 is used for storing log data, parsing basic information in service data, and storing application service raw data. The management and maintenance terminal in fig. 4 is used for monitoring the device status, comprehensively querying the service data, counting the statistical data such as the service information forwarding success rate and the traffic of the mobile blocking application system according to the conditions such as time and address, and supporting data export. Fig. 5 is a third schematic diagram of the architecture of the ground LTE interface subsystem provided in the present invention, and as shown in fig. 5, in the ground signal network, station data acquired by the red network and the blue network through the RBC server, the CTC, the interlocking CI, and other trackside devices are sent to the LTE core network through the respective networks (the red network and the blue network). Fig. 6 is a schematic diagram of a specific structure of a vehicle-ground communication mobile block signal network provided by the present invention, and as shown in fig. 6, the ground LTE interface device adopts a "dual-receive and dual-transmit" communication mode, that is, the red and blue dual-network redundant servers in the mobile block application system simultaneously transmit data to the ground LTE interface device, the ground LTE interface device simultaneously forwards data of the vehicle-mounted terminal to the red and blue dual-network redundant servers in the mobile block application system, and under a normal condition, the main ground LTE interface device undertakes all services. When the main ground LTE interface equipment fails, the standby ground LTE interface equipment undertakes all services; the master and backup ground LTE interface devices record logs. And the data transmission between the mobile block application system and the vehicle-mounted terminal adopts an LTE wireless network data transmission mode. And the data sent to the vehicle-mounted terminal by the mobile block application system is sent to the ground LTE interface equipment through the mobile block application server, and the data is forwarded to the vehicle-mounted terminal through the LTE network by the ground LTE interface equipment. And the data sent to the mobile block application system by the vehicle-mounted terminal is forwarded to the mobile block application system by the ground LTE interface equipment through the LTE network and the ground LTE interface equipment. When the ground LTE interface equipment and the mobile block application system exchange data, the transmission layer adopts a UDP protocol, and the network layer adopts an IP protocol. When the vehicle-mounted terminal and the ground LTE interface equipment exchange data, a UDP protocol is adopted by a transmission layer, and an IP protocol is adopted by a network layer. The LTE network and the mobile block signal network (all mobile block signal devices of the vehicle and the ground can be logically considered to be in the same signal network) are mutually isolated, independent addressing spaces are respectively used, the signal network devices are accessed to the LTE network through LTE access devices (vehicle-mounted LTE communication devices and ground LTE interface devices) in the LTE access area, and network communication among the signal devices in different LTE access areas is realized through the LTE network. Fig. 7 is a schematic diagram of a communication process of signal devices in different LTE access areas, where as shown in fig. 7, in the entire communication process, signal devices in different LTE access areas are not directly addressed but communicate with a local LTE access device, and send signal network addresses and ports of a source device and a target device, and an application data packet to the local LTE access device, where the local LTE access device needs to complete addressing to the target LTE access device through DNS domain name address mapping according to a mapping relationship between the target device (represented by a signal network address of the target device) and the LTE access device, and send the signal network addresses and ports of the source device and the target device, and the application data packet to the target LTE access device in a packet manner. The target LTE access device that receives the data packet needs to fill a packet header of the UDP protocol according to the signal network address of the target device described in the data packet, and send the signal network address and port of the source device and the target device in the data packet and the application data packet to the target device through the local signal network. The embodiment of the invention further defines the interaction mode between the network connection equipment and the wired safety data network, and particularly describes the structure of the mobile block ground train control system.
Based on the above embodiment, in the train-ground communication mobile block signal network, the network connection device is connected with the mobile block ground train control system in an ethernet manner, and a connection interface adopts a standard FE interface.
Particularly, the configuration of the network connection equipment and the interface of the mobile block ground train control system when signals in a train-ground communication mobile block signal network are transmitted in a wired circuit mode is further limited.
Based on the above embodiment, in the train-ground communication mobile block signal network, the access switching device is connected with the LTE core network in an ethernet manner, and a connection interface adopts a standard FE interface.
Particularly, the interface configuration of the access switching equipment and the LTE core network is further defined when signals in a train-ground communication mobile block signal network are transmitted in a wired circuit mode.
Based on the above embodiment, in the vehicle-to-ground communication mobile block signal network, the vehicle-mounted LTE communication device is further configured to receive a dual-network ground control signal of a 4G communication protocol sent by the LTE core network, convert the dual-network ground control signal into a dual-network ground control signal of a 2G communication protocol, and send the dual-network ground control signal to the vehicle-mounted controller VOBC;
the antenna feeder interface type in the vehicle-mounted LTE communication equipment is TNC female.
Specifically, a first module in the vehicle-mounted LTE communication device is an antenna feeder, and a second module, i.e., a 4G-to-2G protocol module, is used to ensure that a signal is converted into a 2G signal more suitable for wired circuit transmission. The antenna feeder interface type is TNC female, the impedance is 50 Ω, table 1 is the antenna feeder line position definition (i.e., radio frequency connector definition) provided by the present invention, and table 1 is as follows:
TABLE 1 radio frequency connector definitions
Therefore, the embodiment of the invention specifically defines the physical parameters of the antenna feeder, and defines the configuration physical parameters of the key module receiving antenna in the vehicle-mounted LTE communication equipment.
Based on the above embodiment, in the vehicle-ground communication mobile block signal network, the vehicle-mounted LTE communication device and the VOBC are connected by ethernet, and the connection interface adopts a 4-core socket with the specification of M12 mother D code.
Specifically, the ethernet interface of the vehicle-mounted LTE communication device for communicating with the VOBC device adopts a 4-core socket, the specification is M12 female D coding, table 2 is the line position definition of the 4-core socket provided by the present invention, and table 2 is as follows:
TABLE 24 wire position definition of core socket
Therefore, the embodiment of the invention specifically defines the physical parameters of the Ethernet interface of the vehicle-mounted LTE communication device and the VOBC device, and defines the configuration physical parameters of the Ethernet interface of the key module of the vehicle-mounted LTE communication device in the vehicle-mounted LTE communication device and the VOBC device.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A wired safety data network of a train operation station is characterized by comprising a first inter-station switch, a first network center switch, a second inter-station switch and a second network center switch, wherein,
the number of the first inter-station switches and the number of the second inter-station switches are preset numbers, and each station in the signal coverage of the train operation signal system is provided with one first inter-station switch and one second inter-station switch;
constructing a first ring network based on the ring network formed by the preset number of first inter-station switches and the first network center switch, and constructing a second ring network based on the ring network formed by the preset number of second inter-station switches and the second network center switch;
station data acquired by the first network center switch and the second network center switch are used for outputting the dual-network ground control signal of each station.
2. The wired security data network at a train operator station according to claim 1, wherein the operation of the first ring network comprises:
selecting a first main switch of the first ring network based on a preset rule, wherein the first main switch is used for opening a standby channel in the first ring network according to an index optimal rule when detecting that any path of the first ring network fails;
correspondingly, the operation of the second ring network includes:
and selecting a second main switch of the second ring network based on the preset rule, wherein the second main switch is used for opening a standby channel in the second ring network according to the index optimal rule when detecting that any path of the second ring network fails.
3. The wired safety data network for train operation station according to claim 2, wherein the opening of the standby access in the first ring network according to the index-optimal rule comprises:
deleting fault break points, determining a first network index value when other paths in the first ring network set break points, and selecting the path with the optimal value in the first network index value to set a new break point to form a standby path;
correspondingly, the opening the standby path in the second ring network according to the index optimization rule includes:
and deleting the fault break points, determining second network index values when other paths in the second ring network set break points, and selecting the path with the optimal value in the second network index values to set a new break point to form a standby path.
4. A train-ground communication mobile block signal network, comprising the train operation station wired security data network, the ground LTE interface subsystem, the LTE core network and the vehicle LTE communication device of any one of claims 1-3, wherein,
the ground LTE interface subsystem is used for receiving a dual-network ground control signal sent by the wired safety data network, sending the dual-network ground control signal to the LTE core network in an isolated mode, and receiving a dual-network train signal returned by the LTE core network;
the LTE core network is used for receiving the dual-network ground control signal sent by the ground LTE interface subsystem, transmitting the dual-network ground control signal to the vehicle-mounted LTE communication equipment in an isolated mode by adopting a 4G communication protocol, and receiving the dual-network train signal returned by the vehicle-mounted LTE communication equipment;
the vehicle-mounted LTE communication equipment is used for receiving the ground control signal forwarded by the LTE core network and responding to a corresponding dual-network train signal to return to the LTE core network;
the ground control signals of different networks in the dual-network ground control signals are isolated from each other, and the train signals of different networks in the dual-network train signals are isolated from each other.
5. The vehicle-to-ground communication mobile block signal network of claim 4, wherein the ground LTE interface subsystem comprises a network connection device, a network security device and an access switching device, wherein,
the network connection equipment is used for receiving the dual-network ground control signal sent by the wired safety data network, forwarding the dual-network ground control signal to the network safety equipment and receiving the dual-network train signal returned by the network safety equipment;
the network safety equipment is used for receiving the dual-network ground control signal sent by the network connection equipment, sending the dual-network ground control signal to the access switching equipment after safety check, and receiving the dual-network train signal returned by the access switching equipment;
the access switching equipment is used for receiving the dual-network ground control signal sent by the network security equipment, forwarding the dual-network ground control signal to the LTE core network, and receiving the dual-network train signal returned by the LTE core network.
6. The train-ground communication mobile block signal network according to claim 5, wherein the network connection device receives the dual-network ground control signal sent by the wired security data network, and specifically comprises:
the network connection equipment receives the dual-network ground control signal from the wired safety data network forwarded by the mobile block ground train control system;
the mobile block ground train control system comprises a first RBC switch, a second RBC switch and a maintenance terminal, wherein the first RBC switch is used for receiving a first single-network ground control signal output by the first network center switch, the second RBC switch is used for receiving a second single-network ground control signal output by the second network center switch, and the maintenance terminal is used for collecting signals of trackside equipment.
7. The train-ground communication mobile blocking signal network according to claim 6, wherein the network connection device is connected with the mobile blocking ground train control system in an Ethernet mode, and a standard FE interface is adopted as a connection interface.
8. The train-ground communication mobile block signal network according to claim 7, wherein the access switching device is connected with the LTE core network in an Ethernet mode, and a standard FE interface is adopted as a connection interface.
9. The vehicle-ground communication mobile block signal network according to claim 8, wherein the vehicle-mounted LTE communication device is further configured to receive a dual-network ground control signal of a 4G communication protocol sent by the LTE core network, convert the dual-network ground control signal into a dual-network ground control signal of a 2G communication protocol, and send the dual-network ground control signal to a vehicle-mounted controller VOBC;
the antenna feeder interface type in the vehicle-mounted LTE communication equipment is TNC female.
10. The train-ground communication mobile blocking signal network of claim 9, wherein the train-mounted LTE communication equipment is connected with the VOBC through an ethernet, and a connection interface adopts a 4-core socket with a specification of M12 mother D code.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114954576A (en) * | 2022-05-23 | 2022-08-30 | 北京交大微联科技有限公司 | Realization structure of communication machine when communicating with radio block center in interlocking system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090225733A1 (en) * | 2008-02-27 | 2009-09-10 | Christopher Kovacik | Apparatus and method for delivering public switched telephone network service and broadband internet access |
| CN102238030A (en) * | 2011-05-16 | 2011-11-09 | 北京全路通信信号研究设计院有限公司 | Signal security data network system and network management system |
| CN102394787A (en) * | 2011-12-14 | 2012-03-28 | 重庆邮电大学 | Dual-link redundancy control method based on EPA switch |
| CN202306295U (en) * | 2011-10-28 | 2012-07-04 | 华自科技股份有限公司 | Local control unit (LCU) using optical fiber double-loop network |
| KR101164767B1 (en) * | 2011-08-25 | 2012-07-12 | 한국철도공사 | A railway interlocking device and radio block center of interface system and operating method thereof |
| CN106411611A (en) * | 2016-11-11 | 2017-02-15 | 安徽维德工业自动化有限公司 | Industrial Ethernet switch redundant ring system |
| CN106428117A (en) * | 2016-10-17 | 2017-02-22 | 北京交通大学 | Wireless communication coverage method for rail transportation train |
| CN206704208U (en) * | 2017-05-19 | 2017-12-05 | 中国神华能源股份有限公司 | Heavy haul railway movable block control system based on TD LTE |
| CN108632317A (en) * | 2017-03-21 | 2018-10-09 | 南方银谷科技有限公司 | Metro Passenger information processing framework |
| CN110677835A (en) * | 2019-08-29 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Dual-network converged train control wireless communication system and method |
| WO2020063979A1 (en) * | 2018-09-30 | 2020-04-02 | 比亚迪股份有限公司 | Train and safety positioning system thereof |
| CN112572539A (en) * | 2020-12-18 | 2021-03-30 | 交控科技股份有限公司 | Hybrid interlocking system and interlocking method |
-
2021
- 2021-09-06 CN CN202111040447.8A patent/CN113973046B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090225733A1 (en) * | 2008-02-27 | 2009-09-10 | Christopher Kovacik | Apparatus and method for delivering public switched telephone network service and broadband internet access |
| CN102238030A (en) * | 2011-05-16 | 2011-11-09 | 北京全路通信信号研究设计院有限公司 | Signal security data network system and network management system |
| KR101164767B1 (en) * | 2011-08-25 | 2012-07-12 | 한국철도공사 | A railway interlocking device and radio block center of interface system and operating method thereof |
| CN202306295U (en) * | 2011-10-28 | 2012-07-04 | 华自科技股份有限公司 | Local control unit (LCU) using optical fiber double-loop network |
| CN102394787A (en) * | 2011-12-14 | 2012-03-28 | 重庆邮电大学 | Dual-link redundancy control method based on EPA switch |
| CN106428117A (en) * | 2016-10-17 | 2017-02-22 | 北京交通大学 | Wireless communication coverage method for rail transportation train |
| CN106411611A (en) * | 2016-11-11 | 2017-02-15 | 安徽维德工业自动化有限公司 | Industrial Ethernet switch redundant ring system |
| CN108632317A (en) * | 2017-03-21 | 2018-10-09 | 南方银谷科技有限公司 | Metro Passenger information processing framework |
| CN206704208U (en) * | 2017-05-19 | 2017-12-05 | 中国神华能源股份有限公司 | Heavy haul railway movable block control system based on TD LTE |
| WO2020063979A1 (en) * | 2018-09-30 | 2020-04-02 | 比亚迪股份有限公司 | Train and safety positioning system thereof |
| CN110677835A (en) * | 2019-08-29 | 2020-01-10 | 北京全路通信信号研究设计院集团有限公司 | Dual-network converged train control wireless communication system and method |
| CN112572539A (en) * | 2020-12-18 | 2021-03-30 | 交控科技股份有限公司 | Hybrid interlocking system and interlocking method |
Non-Patent Citations (3)
| Title |
|---|
| EDOARDO FUSELLA等: "Path Setup for Hybrid NoC Architectures Exploiting Flooding and Standby", 《IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS 》, 1 May 2017 (2017-05-01) * |
| 付文刚;刘畅;杨居丰;: "基于LTE技术重载铁路移动闭塞通信系统研究及应用", 铁道通信信号, no. 05 * |
| 黄文昕;檀森林;: "地铁高可靠LTE无线网络的设计及应用", 计算机与网络, no. 17, 12 September 2016 (2016-09-12) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114954576A (en) * | 2022-05-23 | 2022-08-30 | 北京交大微联科技有限公司 | Realization structure of communication machine when communicating with radio block center in interlocking system |
| CN114954576B (en) * | 2022-05-23 | 2023-10-13 | 北京交大微联科技有限公司 | Implementation structure of communication machine for communication with wireless block center in interlocking system |
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|---|---|
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