CN112793624A

CN112793624A - Train control and monitoring system based on TSN

Info

Publication number: CN112793624A
Application number: CN202011589404.0A
Authority: CN
Inventors: 宋有为; 姜延辉
Original assignee: Traffic Control Technology TCT Co Ltd
Current assignee: Traffic Control Technology TCT Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-05-14

Abstract

The embodiment of the disclosure provides a train control and monitoring system based on TSN, which is characterized in that the train control and monitoring system corresponds to TCMS equipment, TCMS network control equipment, hard line equipment and TSN switches of each carriage of a train; the TCMS device, the TCMS network control device and the hard line device corresponding to each carriage of the train are respectively accessed to the TSN through the corresponding TSN switch to carry out control and monitoring information transmission among different carriages. In this way, traditional system equipment, such as hard-line equipment, can be gathered to the TCMS network that uses the TSN network to construct, and the TCMS can better management and control and supervise vehicle hard-line equipment, and its state and fault information can be through the more convenient notice of human-computer interaction interface HMI or other human-computer interaction system for vehicle operation or maintainer, make things convenient for the operator to monitor the vehicle state at any time.

Description

Train control and monitoring system based on TSN

Technical Field

Embodiments of the present disclosure relate generally to the field of rail transit technology and, more particularly, to a TSN-based train control and monitoring system.

Background

With the rapid development of the rail transit industry, the requirements of systems such as train control, signal, PIS/PA/CCTV, fire, passenger service and the like on the real-time performance, transmission bandwidth and the like of a train control and monitoring system are higher and higher, and the networking of a vehicle-mounted network is more and more complex. The use of a large number of hard wires for information transmission can seriously increase the weight of the train and the construction cost of the train, and lead the design of train routing to become more and more complex and difficult.

Disclosure of Invention

According to an embodiment of the present disclosure, a train control and monitoring system based on a TSN is provided. The system comprises: the system comprises TCMS equipment, TCMS network control equipment, hard line equipment and a TSN switch, wherein the TCMS equipment corresponds to each carriage of a train; the TCMS device, the TCMS network control device and the hard line device corresponding to each carriage of the train are respectively accessed to the TSN through the corresponding TSN switch to carry out control and monitoring information transmission among different carriages.

As for the above-mentioned aspects and any possible implementation manner, there is further provided an implementation manner, if the TCMS device, the TCMS network control device, and the hard-wired device are devices supporting the TSN network topology, the devices directly access the TSN switch; and if the TCMS equipment, the TCMS network control equipment and the hard-line equipment are the equipment which does not support the TSN network topology, the equipment is accessed to the TSN switch through the TSN conversion board card.

The TCMS device, the TCMS network control device, and the hard-wired device are devices supporting a TSN network topology, and a network control unit supporting a TSN network is built in the TCMS device, the TCMS network control device, and the hard-wired device.

The TCMS device, the TCMS network control device, and the hard-wired device are devices that do not support a TSN network topology, and a network control unit that supports an ethernet is built in the TCMS device, the TCMS network control device, and the hard-wired device.

In the foregoing aspect and any possible implementation manner, an implementation manner is further provided, where the TSN conversion board includes an ethernet input port, a TSN network output port, and a TSN network chip.

As for the above-mentioned aspect and any possible implementation manner, further providing an implementation manner that the accessing, by the device, the TSN switch through the TSN conversion board includes: the TCMS equipment, the TCMS network control equipment and the hard-line equipment are respectively accessed to an Ethernet input network port of the TSN conversion board card through Ethernet interfaces, and a TSN network output network port of the TSN conversion board card is connected with the TSN switch; the TSN chip is used for converting between the Ethernet and the TSN.

As for the above-mentioned aspect and any possible implementation manner, further providing an implementation manner that the accessing, by the device, the TSN switch through the TSN conversion board includes: the TCMS equipment, the TCMS network control equipment and the hard line equipment are accessed to the TSN switch through a TSN network conversion plug-in box, and the TSN network conversion plug-in box comprises TSN conversion board cards respectively corresponding to the TCMS equipment, the TCMS network control equipment and the hard line equipment.

The foregoing aspect and any possible implementation manner further provide an implementation manner, where a transmission priority of network information corresponding to the hard-wired device in the TSN network is highest.

There is further provided in accordance with the above-described aspect and any possible implementation, an implementation in which the TSN network is a ring topology or a line topology.

The above-described aspects and any possible implementations further provide an implementation in which the linear topology is a linear redundant topology.

It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:

FIG. 1 illustrates a schematic diagram of an exemplary operating environment in which embodiments of the present disclosure can be implemented;

fig. 2 shows a schematic diagram of a ring topology network according to an embodiment of the present disclosure;

FIG. 3 shows a schematic diagram of a linear redundant topology network according to an embodiment of the present disclosure;

fig. 4 illustrates a topology diagram of a TSN switch for device access supporting a TSN network according to an embodiment of the present disclosure;

fig. 5 shows a schematic diagram of a control unit supporting a TSN network according to an embodiment of the present disclosure;

fig. 6 shows a block diagram of a TSN conversion board according to an embodiment of the present disclosure;

fig. 7 shows a topology diagram of a device that does not support a TSN network accessing a TSN switch through a TSN network switching box according to an embodiment of the present disclosure;

fig. 8 illustrates a conversion logic diagram for a TSN network chip according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are some, but not all embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The TSN (Time Sensitive Networking, Time Sensitive network) is a set of protocol standards developed by the IEEE802.1 TSN task group, which defines a Time Sensitive mechanism for ethernet data transmission, and guarantees the transmission performance of traffic in the ethernet by means of traffic packet priority forwarding, scheduling mechanism line cleaning, bandwidth reservation, and other mechanisms, and increases the certainty and reliability for the standard ethernet to ensure that the ethernet can provide a stable and consistent service level for the transmission of critical data. The TSN real-Time is mainly realized through an IEEE8-2.1Qbv function, and the difference is that the traditional Ethernet IEEE802.1Qbu + IEEE802.3br adopts a preemptive MAC mode to transmit high real-Time data, the IEEE802.1Qbv adopts a Time Aware Shaper to provide a special Time channel for the high real-Time data, and other non-real-Time data are transmitted in a Best Effort mode; the implementation principle is that in the whole process of end-to-end transmission of data packets, the TSN performs comprehensive data packet scheduling optimization on each key protocol/control information/data stream on the whole network, accurately defines the priority of the data packets in each forwarding process, and schedules the priority and the assigned channel in advance for all point-to-point paths, thereby ensuring the real-time performance and the accuracy of key data.

Fig. 1 shows a schematic diagram of a TSN-based train control and monitoring system 100 in which embodiments of the present disclosure can be implemented. The method comprises the steps of packaging a plurality of vehicle-level system devices 102 and a TSN switch 108 in a TSN-based train control and monitoring system 100, wherein;

each vehicle-level system device 102 corresponds to a train car;

the vehicle-level system devices 102 are connected to the TSN network 104 through corresponding TSN switches 108, respectively, to perform control and monitoring information transmission between different cars.

In some embodiments, a train of vehicles is in the form of a group TMc1-Mp1-Mp2-TMc 2; the multi-vehicle. The TMc vehicle is a semi-trailer with a cab, the Mp vehicle is a motor car without the cab and a pantograph, and the M vehicle is a motor car without the cab and the pantograph.

In some embodiments, the vehicle-level system device 102 corresponds to a car; including a TCMS device 202, a TCMS network control device 204, and a hardwired device 206.

In some embodiments, for a TMc vehicle, the TCMS apparatus 202 comprises: MVCU (master control unit), HMI (human machine interaction unit), RIOM1 (remote input output unit 1), RIOM2 (remote input output unit 2); the TCMS network control device 204 includes a DCU (door controller), an EBCU (brake control unit), an MDCU1 (main door controller 1), an MDCU2 (main door controller 2), an HVAC (air conditioner controller), a VOCB, an ACU (auxiliary converter), an FAS (fire automatic alarm system), and a PIS/PA (passenger signal system/passenger broadcaster).

In some embodiments, for Mp vehicles, the TCMS device 202 includes: RIOM1 (remote input output Unit); the TCMS network control device 204 includes a DCU (door controller), a CCU-D (train diagnostic system central control unit), a PMS (power management system), and a BMS (battery management system).

In some embodiments, the vehicle devices of the conventional hard-wired communication portion include devices for traction control, brake control, doors, signaling, and the like.

In some embodiments, the TCMS device, the TCMS network control device, and the hard-wired device are devices supporting a TSN network topology, and a network control unit supporting a TSN network is built in, so that the devices directly access the TSN switch.

At present, chips supporting the TSN network include Ti AM654X, NXP LS1028A, Xilinx Zynq UltraScale +, Intel i210, and the like, and various subsystem suppliers can perform hardware design and software development according to the boards. The board card scheme is shown in the attached figure 4, and the network topology is shown in the attached figure 5.

The network control unit supporting the TSN is built in the equipment, so that the problem of non-support of the TSN is fundamentally solved, the vehicle-mounted TSN is perfectly realized, and the advantages of the TSN are further exerted. However, in this embodiment, many devices involved are required to cooperate with redesign of the board, and simultaneously, the optimization design work of the two layers including the software system and the hardware device is performed, and a corresponding new function test and security review are performed, so that the development period is expected to be prolonged, and the development cost is also increased.

In some embodiments, the TCMS device, the TCMS network control device, and the hard-line device are devices that do not support a TSN network topology, and the devices are connected to the TSN switch through a TSN conversion board card.

In some embodiments, the TCMS device 202, the TCMS network control device 204, and the hard-wired device 206 are connected to the TSN conversion board via ethernet interfaces, and then connected to the first TSN switch 208 and the second TSN switch 210 to form the vehicle TSN network. The TSN conversion board is shown in fig. 6, and includes an ethernet input port, a TSN network output port, and a TSN network chip; interface information sent by subsystems such as the TCMS device 202, the TCMS network control device 204, the hard-wired device 206, etc. is received through the ethernet input network port, converted into TSN network information by the TSN network chip, and then sent to the first TSN switch 208 and the second TSN switch 210 through the TSN network output network port.

In some embodiments, as shown in fig. 7, subsystems such as the TCMS device 202, the TCMS network control device 204, and the hard-wired device 206, and TSN network conversion plug boxes added between the first TSN switch 208 and the second TSN switch 210 include a plurality of TSN conversion boards, and each TSN conversion board performs TSN network conversion for each subsystem one-to-one.

In some embodiments, the TSN network chip of the TSN conversion board card may be Ti AM654X, NXP LS1028A, Xilinx Zynq UltraScale +, Intel i210, and the conversion logic thereof is to add an IEEE802.1Q protocol on a link layer of a common ethernet by corresponding driving; as shown in fig. 8, compared with the ordinary ethernet frame structure, the TSN network needs to support the IEEE802.1Q protocol at the data link layer, so in the chip internal protocol conversion logical processing process, a 4-byte 802.1Q frame header is inserted between the source MAC address and the type/length, the frame header includes two bytes of TPID (tag protocol identification) and two bytes of TCI (tag control information), when the TPID value is 0x8100, it indicates that the frame is a VLAN type frame using the 802.1Q protocol, and the TCI field mainly includes three contents, respectively: : PCP (Priority Code Point), 3 bits, indicating the frame Priority, for a total of 8 levels; CFI, 1 bit, indicating whether the MAC address is in standard format; VID (VLAN Identifier), 12 bits, indicates the VLAN identification to which the frame belongs.

In some embodiments, the transmission priority of the traditional vehicle hard-wired communication portion, i.e., hard-wired device 206, is set to be highest to ensure the reliability and stability required for traditional hard-wired communication.

In some embodiments, a device supporting the TSN network topology may be mixed with a device not supporting the TSN network topology, that is, the device supporting the TSN network topology directly accesses the TSN switch; and the equipment which does not support the TSN network topology is accessed to the TSN switch through the TSN conversion board card. The upgrading of the equipment is facilitated, the equipment which does not support the TSN network topology is gradually upgraded into the equipment which supports the TSN network topology, the stable upgrading is realized, the real full coverage of the vehicle TSN network is finally realized, and the optimal performance optimization effect is realized.

In some embodiments, the TSN network 104 employs a ring topology, as shown in fig. 2, which includes an ethernet bus and a plurality of TSN switches. Wherein, for each vehicle-level system device 102, a set of a first TSN switch and a second TSN switch is configured, and the TCMS device 202, the TCMS network control device 204 and the hard-wired device 206 are connected with the first TSN switch 208 and the second TSN switch 210 through ethernet buses, respectively. The first TSN switch 208 and the second TSN switch 210 of the TMc1 vehicle are connected by an ethernet bus; the first TSN switches 208 of the TMc1 vehicle, the Mp1 vehicle, the Mp2 vehicle and the TMc2 vehicle are connected in sequence through an ethernet bus; the second TSN switches 210 of the TMc1 car, the Mp1 car, the Mp2 car and the TMc2 car are sequentially connected through an ethernet bus; the first TSN switch 208 and the second TSN switch 210 of the TMc2 vehicle are connected by an ethernet bus; forming a ring topology network.

In some embodiments, the TSN network 104 employs a line redundant topology, as shown in fig. 3, which includes an ethernet bus and a plurality of TSN switches. Wherein, for each vehicle-level system device 102, a set of a first TSN switch and a second TSN switch is configured, and the TCMS device 202, the TCMS network control device 204 and the hard-wired device 206 are connected with the first TSN switch 208 and the second TSN switch 210 through ethernet buses, respectively. The first TSN switches 208 of the TMc1 vehicle, the Mp1 vehicle, the Mp2 vehicle and the TMc2 vehicle are connected in sequence through an ethernet bus; the second TSN switches 210 of the TMc1 car, the Mp1 car, the Mp2 car and the TMc2 car are sequentially connected through an ethernet bus; a linear redundant network is formed. Compared with a ring vehicle network topology, the two schemes are different only in topological structure, and in the specific implementation and construction, a proper topological structure can be selected for construction according to the vehicle construction requirements. Compared with a ring vehicle network topology, the two schemes are different only in topological structure, and in the specific implementation and construction, a proper topological structure can be selected for construction according to the vehicle construction requirements.

In some embodiments, the TSN network 104 may also employ a linear topology, with only one TSN switch configured for each vehicle-level system device 102.

The train control and monitoring system is constructed through the TSN technology, and in view of high real-time performance and high stability of a TSN network, the safety level of the train control and monitoring system is improved, so that the functions of partial hard lines are compatible, and the purpose of reducing the hard lines is achieved. By integrating the traditional vehicle hardline into the TCMS network constructed by using the TSN network, the TCMS can better control and supervise the vehicle hardline equipment, and the state and fault information of the TCMS can be more conveniently notified to vehicle operation or maintenance personnel through a human-computer interaction interface (HMI) or other human-computer interaction systems. The vehicle state can be conveniently monitored by operators at any time.

While several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims

1. The utility model provides a train control and monitored control system based on TSN which characterized in that includes:

the system comprises TCMS equipment, TCMS network control equipment, hard line equipment and a TSN switch corresponding to each carriage of a train;

the TCMS device, the TCMS network control device and the hard line device corresponding to each carriage of the train are respectively accessed to the TSN through the corresponding TSN switch to carry out control and monitoring information transmission among different carriages.

2. The system of claim 1,

if the TCMS equipment, the TCMS network control equipment and the hard-line equipment are equipment supporting TSN network topology, the equipment is directly accessed to the TSN switch;

and if the TCMS equipment, the TCMS network control equipment and the hard-line equipment are the equipment which does not support the TSN network topology, the equipment is accessed to the TSN switch through the TSN conversion board card.

3. The system of claim 2, wherein the TCMS device, the TCMS network control device, and the hard-wired device are devices supporting TSN network topology, and a network control unit supporting TSN network is built in the TCMS device, the TCMS network control device, and the hard-wired device.

4. The system of claim 2, wherein the TCMS device, the TCMS network control device, and the hard-wired device are devices that do not support TSN network topology, and have a network control unit supporting ethernet built therein.

5. The train control and monitoring system of claim 2,

the TSN conversion board card comprises an Ethernet input network port, a TSN network output network port and a TSN network chip.

6. The train control and monitoring system of claim 5, wherein the accessing of the equipment to the TSN switch via a TSN switch board card comprises:

the TCMS equipment, the TCMS network control equipment and the hard-line equipment are respectively accessed to an Ethernet input network port of the TSN conversion board card through Ethernet interfaces, and a TSN network output network port of the TSN conversion board card is connected with the TSN switch; wherein the content of the first and second substances,

the TSN chip is used for converting between the Ethernet and the TSN.

7. The train control and monitoring system of claim 5, wherein the accessing of the equipment to the TSN switch via a TSN switch board card comprises:

the TCMS equipment, the TCMS network control equipment and the hard line equipment are accessed to the TSN switch through a TSN network conversion plug-in box, and the TSN network conversion plug-in box comprises TSN conversion board cards respectively corresponding to the TCMS equipment, the TCMS network control equipment and the hard line equipment.

8. The train control and monitoring system of claim 1,

and the transmission priority of the network information corresponding to the hard-wired device in the TSN is the highest.

9. The train control and monitoring system of claim 1,

the TSN is of a ring topology structure or a linear topology structure.

10. The train control and monitoring system of claim 8,

the linear topological structure is a linear redundant topological structure.