CN209072531U - TRDP protocol switch - Google Patents
TRDP protocol switch Download PDFInfo
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- CN209072531U CN209072531U CN201920027271.4U CN201920027271U CN209072531U CN 209072531 U CN209072531 U CN 209072531U CN 201920027271 U CN201920027271 U CN 201920027271U CN 209072531 U CN209072531 U CN 209072531U
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Abstract
This application involves a kind of TRDP protocol switch, including exchanger core plate, Ethernet transformer and Ethernet interface.Wherein, exchanger core plate includes the exchange chip of built-in ARM controller, and the interface circuit of connection exchange chip；Ethernet interface includes normal transmissions port and TRDP filtering port.Interface circuit is separately connected normal transmissions port and TRDP filtering port by Ethernet transformer；Normal transmissions port and TRDP filtering port are used to connection train apparatus.Based on above structure, ARM controller can configure exchange chip according to TRDP agreement, realize the Ethernet data communication between mobile unit；Simultaneously, VLAN the and TRDP filtering function between particular port can be realized by normal transmissions port and TRDP filtering port, TRDP Packet Filtering and orientation, which forward, to be realized to particular port, it avoids terminal device from the phenomenon that packet loss occur, improves the real-time and reliability of the data transmission of rail traffic.
Description
Technical field
This application involves technical field of rail traffic, more particularly to a kind of TRDP agreement (Train Real-time
Data Protocol, train real time data agreement) interchanger.
Background technique
Any two network node that general switch is only capable of being embodied as access switch provides the pathway for electrical signals exclusively enjoyed,
With the surge of rail traffic ethernet end device quantity, column are defined in the standard IEC 61375-3-4-2014 of Ethernet
Ethernet communication network (Ethernet Consist in vehicle communication network (Train communication network, TCN)
Network, ECN) standard, new standard has been gradually applied to Chinese field of track traffic.TRDP agreement, it is real for rail traffic
When Ethernet is improved by real-time, ensures that reliability is also essential condition for rail traffic Ethernet.
During realization, inventor has found that at least there are the following problems in traditional technology: when more equipment, multichannel, more
When network carries out data transmission simultaneously, the terminal device for connecting conventional switch can receive routine data packet and TRDP number simultaneously
According to packet.In the biggish situation of data volume, the phenomenon that terminal device is easy to appear packet loss, influences the data transmission of rail traffic
Real-time and reliability.
Utility model content
Based on this, it is necessary to for conventional switch when data volume is big, the real-time of the data of rail traffic transmission and
The low problem of reliability provides a kind of TRDP protocol switch.
To achieve the goals above, the embodiment of the present application provides a kind of TRDP protocol switch, comprising: exchanger core
Plate, Ethernet transformer and Ethernet interface；Exchanger core plate includes built-in ARM (Advanced RISC Machines)
The exchange chip of controller, and the interface circuit of connection exchange chip；Ethernet interface includes normal transmissions port and TRDP
Filtering port.Interface circuit is separately connected normal transmissions port and TRDP filtering port by Ethernet transformer；Normal transmissions
Port and TRDP filtering port are used to connection train apparatus.
Exchanger core plate further includes memory chip in one of the embodiments,；Exchange chip connects memory chip.
Memory chip is DDR3 memory chip in one of the embodiments,.
It in one of the embodiments, further include power circuit；Power circuit is separately connected exchange chip and memory chip.
Power circuit includes switching power supply in one of the embodiments,；Switching power supply is separately connected exchange
Chip and memory chip.
Switching power supply includes the first power conversion chip, second source conversion chip in one of the embodiments,
With third power conversion chip；First power conversion chip, second source conversion chip connect exchange chip；The conversion of third power supply
Chip is separately connected exchange chip and memory chip.
Exchange chip is three-tier switch chip in one of the embodiments,；Interface circuit is gigabit interface circuit；Often
It advises transmission port and TRDP filtering port is gigabit ethernet interface.
It in one of the embodiments, further include the indicating equipment for connecting exchanger core plate.
Normal transmissions port is M12 interface or RJ45 interface in one of the embodiments,.
TRDP filtering port is M12 interface or RJ45 interface in one of the embodiments,.
A technical solution in above-mentioned technical proposal is had the following advantages and beneficial effects:
TRDP protocol switch, including exchanger core plate, Ethernet transformer and Ethernet interface.Exchanger core
Plate includes the exchange chip of built-in ARM controller, and the interface circuit of connection exchange chip；Ethernet interface includes conventional passes
Defeated port and TRDP filtering port.Interface circuit is separately connected normal transmissions port and TRDP filter end by Ethernet transformer
Mouthful；Normal transmissions port and TRDP filtering port are used to connection train apparatus.Based on above structure, ARM controller can basis
TRDP agreement configures exchange chip, realizes the Ethernet data communication between mobile unit；Meanwhile normal transmissions port can be passed through
With TRDP filtering port, realize particular port between VLAN (Virtual Local Area Network, virtual LAN) and
TRDP filtering function realizes that TRDP Packet Filtering and orientation forward to particular port, terminal device is avoided showing for packet loss occur
As improving the real-time and reliability of the data transmission of rail traffic.
Detailed description of the invention
By being more particularly described for preferred embodiment of the present application shown in the drawings, the above and other mesh of the application
, feature and advantage will become more fully apparent.Identical appended drawing reference indicates identical part in all the attached drawings, and does not carve
Meaning draws attached drawing by actual size equal proportion scaling, it is preferred that emphasis is shows the purport of the application.
Fig. 1 is the first schematic diagram of TRDP protocol switch in one embodiment；
Fig. 2 is the second schematic diagram of TRDP protocol switch in one embodiment；
Fig. 3 is the third schematic diagram of TRDP protocol switch in one embodiment；
Fig. 4 is the structural schematic diagram of gigabit ethernet interface in one embodiment；
Fig. 5 is the 4th schematic diagram of TRDP protocol switch in one embodiment；
Fig. 6 is the first schematic diagram of power circuit in one embodiment；
Fig. 7 is the second schematic diagram of power circuit in one embodiment.
Specific embodiment
The application in order to facilitate understanding is described more fully the application below with reference to relevant drawings.In attached drawing
Give the preferred embodiment of the application.But the application can realize in many different forms, however it is not limited to this paper institute
The embodiment of description.On the contrary, purpose of providing these embodiments is make it is more thorough and comprehensive to disclosure of this application.
It should be noted that it can be directly to separately when an element is considered as " connection " another element
One element and it is in combination be integrated, or may be simultaneously present centering elements.
Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application
The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein
The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more phases
Any and all combinations of the listed item of pass.
The brake system of rail traffic and safety monitoring system etc. require height, therefore, train communication network to real-time property
The real-time and reliability of network will cause strong influence to Rail Transit System.The embodiment of the present application can realize TRDP data with
The branch of routine data is transmitted, and the reliability, real-time and stability of Train Communication Network are improved.
In one embodiment, a kind of TRDP protocol switch is provided, as shown in FIG. 1, FIG. 1 is TRDP in one embodiment
First schematic diagram of protocol switch, comprising: exchanger core plate, Ethernet transformer and Ethernet interface；It hands over
Core board of changing planes includes the exchange chip of built-in ARM controller, and the interface circuit of connection exchange chip；Ethernet interface packet
Include normal transmissions port and TRDP filtering port.Interface circuit by Ethernet transformer be separately connected normal transmissions port and
TRDP filtering port；Normal transmissions port and TRDP filtering port are used to connection train apparatus.
Specifically, exchanger core plate connects Ethernet interface by Ethernet transformer in TRDP protocol switch,
Ethernet interface is for connecting train apparatus.Wherein, exchanger core plate includes the friendship of interface circuit and built-in ARM controller
Chip is changed, Ethernet interface includes normal transmissions port and TRDP filtering port.Exchange chip connects ether by interface circuit
Net transformer, Ethernet transformer are separately connected normal transmissions port and TRDP filtering port.Normal transmissions port and TRDP mistake
Filter port is used equally for connection train apparatus, transmits communication data for train apparatus.
It should be noted that ARM controller can be used for configuring exchange chip in exchanger core plate, TRDP agreement is realized
Data transmission, exchange filter and can realize that VLAN is divided.Meanwhile ARM controller can also be used in system initialization etc..Specifically
Ground, in a kind of wherein configuration mode, user can log in Web Server by any network interface, configured and handed over by Web Server
The VLAN to change planes, also, the TRDP filtering port of interchanger can be configured by Web Server, and then between realization particular port
VLAN and TRDP filtering function.It should be noted that being based on above structure, VLAN the and TRDP filter end of above-mentioned configuration interchanger
Mouth can be realized by a variety of prior arts, be not particularly limited herein.
Exchange chip can be used for realizing rail traffic ETBN (Ethemet Train Bus Nod, train bus-line node) bone
The function of dry network switch, the conversion of R-NAT railway private network address and TTDP train Topology Discovery Protocol etc., is arranged
The mobile unit data ethernet network transmission of vehicle, and then realize the Ethernet interaction of the mobile unit of train, it improves in rail traffic
The reliability and real-time of Ethernet transmission.Also, catenet can be also divided into hierarchical subnet by exchange chip, be supported
The automatic IP of ETB (Ethemet Train Backbone, train ether backbone network) (Internet Protocol Address,
Internet protocol address) it redistributes, and data and information inter-network is allowed to communicate, meet IEC61375-2-5 and IEC61375-3-4
Standard.Based on this, the embodiment of the present application can be compatible with EN-50155 standard, meet railway vehicular applications.
Interface circuit for realizing exchange chip and external equipment data interaction.Specifically, interface circuit can be ether
Network interface circuit.Based on this, in data uplink direction, the data message of train apparatus can be sent to exchange core by interface circuit
Piece after being handled according to corresponding list item data message by exchange chip, can be sent to Ethernet by interface circuit.?
The data message in data downstream direction, Ethernet is sent to exchange chip by interface circuit, by exchange chip according to corresponding
After list item handles data message, the train apparatus of corresponding port connection can be sent to by interface circuit.Meanwhile
When data between train apparatus mutually pass, the data message of the first train apparatus is sent to exchange chip by interface circuit, by handing over
It changes after chip handles data message according to corresponding list item, the second train apparatus can be sent to by interface circuit.
Normal transmissions port can be used for transmitting routine data and TRDP data, realize that train apparatus accesses train communication network
Network.TRDP filtering port can be used for realizing TRDP Packet Filtering, realize the TRDP filtering function in interchanger between particular port.
It should be noted that normal transmissions port or TRDP filtering port can also be used for connection access network equipment, realize and Ethernet
Communication connection.Based on this, the embodiment of the present application can realize that TRDP data and routine data branch are transmitted, and terminal device is avoided to occur
The phenomenon that packet loss, improves the reliability, real-time, stability of Train Communication Network.
In Rail Transit System, in train apparatus, terminal device may include that TRDP terminal device and conventional terminal are set
It is standby.The quick filtering of the embodiment of the present application, the data interaction being able to achieve between TRDP terminal device and TRDP data and orientation pass
It is defeated, meet requirement of the rail traffic Ethernet to real-time.Pass through the filtering of rail traffic dedicated ethernet data, it is ensured that eventually
End equipment only receives general data packet or TRDP data packet, is conducive to the working efficiency for improving ethernet end device.Meanwhile this
Apply for that embodiment can also carry out VLAN division to TRDP terminal device, to realize TRDP terminal device and traditional terminal device same
Virtual LAN packet switch function under one network.
In one embodiment, as shown in Fig. 2, Fig. 2 be one embodiment in TRDP protocol switch second schematically
Structure chart, exchanger core plate further include memory chip；Exchange chip connects memory chip.
Specifically, exchanger core plate further includes the memory chip for connecting exchange chip in TRDP protocol switch.
Memory chip can be used for caching routine data and TRDP data, improve the data dispatch transmission in Train Communication Network efficiency and
Reliability.
In one embodiment, memory chip is DDR3 memory chip.
Specifically, memory chip can be DDR3 memory chip in TRDP protocol switch.Storage is equivalent to inside DDR3
Table is similar with the retrieval of table, needs first to specify row address (row), then specified column address (column), thus can be quasi-
The true cell for finding needs.For DDR3 memory chip, cell is known as basic unit of storage (namely every time can be from this
The minimum data that DDR3 memory chip is read).Storage table is known as logic bank, and DDR3 memory chip includes 8 bank, also
Be said 8 as store table, so the process of addressing is the first specified address bank, then specified row address, finally refer to column
Address determines basic unit of storage, and the size of each basic unit of storage is equal to the data line bit wide of the DDR3 chip, also
It is the minimum data length that can be read every time from single DDR3 chip.
In one embodiment, as shown in Fig. 2, further including power circuit；Power circuit is separately connected exchange chip and interior
Deposit chip.
Specifically, TRDP protocol switch further includes the power circuit for being separately connected exchange chip and memory chip.Electricity
Source circuit can provide reference power supply by converting external power supply for each chip.
In one embodiment, power circuit includes switching power supply；Switching power supply is separately connected exchange chip
And memory chip.
Specifically, power circuit may include being separately connected exchange chip and memory chip hair switching power supply.Switch
Regulated power supply has the characteristics that friendship can be improved using simple, high-efficient, conversion pressure difference is big, current output capability is strong, calorific value is small
It changes planes the reliability of core board.
In one embodiment, as shown in figure 3, Fig. 3 is schematic for the third of TRDP protocol switch in one embodiment
Structure chart, switching power supply include the first power conversion chip, second source conversion chip and third power conversion chip；The
One power conversion chip, second source conversion chip connect exchange chip；Third power conversion chip is separately connected exchange chip
And memory chip.
Specifically, switching power supply may include three kinds of power conversion chips, different normal voltages is provided respectively, with
Meet the power demands of exchanger core plate.
In a specific example, the first power conversion chip can be RT8210BGSP, provide 1.0V (volt) power supply；The
Two power conversion chips can be RT7264AZQW, provide 3.3V power supply；Third power conversion chip can be RT7266ZSP, provide
1.5V power supply.
In one embodiment, exchange chip is three-tier switch chip；Interface circuit is gigabit interface circuit；It is conventional to pass
Defeated port and TRDP filtering port are gigabit ethernet interface.
Specifically, the exchange chip of exchanger core plate is three-tier switch chip, interface in TRDP protocol switch
Circuit is gigabit interface circuit, and Ethernet interface is gigabit ethernet interface.As shown in figure 4, Fig. 4 is gigabit in one embodiment
The structural schematic diagram of Ethernet interface.Gigabit interface circuit and gigabit ethernet interface, can backward compatible 10/100M ether
Net.In addition, ethernet interface module can be used in the embodiment of the present application, built-in gigabit Ethernet transformer is simple and reliable for structure.
It in one embodiment, further include the indicating equipment for connecting exchanger core plate.
Specifically, TRDP protocol switch may also include indicating equipment.Indicating equipment can be used for prompting the fortune of interchanger
Row state, and/or alarm is initiated when interchanger breaks down, to improve the reliability of interchanger.Specifically, indicating equipment
It can be warning lights, buzzer and the alarm devices such as LED etc., be not particularly limited herein.
In one embodiment, normal transmissions port is M12 interface or RJ45 interface.
Specifically, normal transmissions port can be M12 interface or RJ45 interface in TRDP protocol switch.Wherein, M12
The conveniently accessible train apparatus of interface, the conveniently accessible Ethernet of RJ45 interface.
In one embodiment, TRDP filtering port is M12 interface or RJ45 interface.
Specifically, TRDP filtering port can be M12 interface or RJ45 interface in TRDP protocol switch.Wherein, M12
The conveniently accessible train apparatus of interface, the conveniently accessible Ethernet of RJ45 interface.
In one embodiment, as shown in figure 5, Fig. 5 be one embodiment in TRDP protocol switch the 4th schematically
Structure chart, in TRDP protocol switch, exchanger chip can be three-tier switch chip BCM53344, and interface circuit is 16 tunnels thousand
Million interface circuits, Ethernet transformer are 16 road gigabit Ethernet transformers, and Ethernet interface is that 16 road gigabit Ethernet M12 connect
Mouth, memory chip are DDR3 memory chip.
Three-tier switch chip BCM53344 connects with 16 tunnel gigabit interface circuits, DDR3 memory chip and power circuit respectively
It connects.Three-tier switch chip BCM53344 is Botong chip BCM53344, is mounted with Linux platform；BCM53344 for realizing
The conversion of the function of rail traffic ETBN backbone switches, such as R-NAT railway private network address and TTDP (Train
Topology Discovery Protocol, train Topology Discovery Protocol), realize mobile unit data ethernet network transmission.TRDP
Orientation forwarding and filtering function can pass through ACL (Access Control List, accesses control list) mould inside BCM53344
Block realizes that user IP protocol type can be arranged by Web Server, (Transmission Control Protocol is passed TCP
Transport control protocol view) source port/destination port, UDP (User Datagram Protocol, User Datagram Protocol) source port/
The information such as target port.
Wherein, BCM53344 is a high-performance exchange chip with heap azido functional, defaults work in little endian mode, mentions
The full duplex gigabit ethernet port of GPHY is embedded in for 16；In integrated 1.5MB (MByte) caches data message
Portion's memory；Support IPv4 and IPv6 agreement, double label VLANs (Virtual Local Area Network, virtual LAN) and
QoS(Quality of Service)；It is internally integrated the ARM Cotex-A9 processor of high performance 400MHz (megahertz).This
Outside, DDR3 memory chip can be MT41K128M16JT；Memory when for three-tier switch chip BCM53344 operation.
Power circuit can be as shown in Figure 6,7, and Fig. 6 is the first schematic diagram of power circuit in one embodiment, Fig. 7
For the second schematic diagram of power circuit in one embodiment.In power circuit, 1.0V electricity can be provided by RT8210BGSP
Source, provides 3.3V power supply by RT7264AZQW, provides 1.5V power supply by RT7266ZSP.
The embodiment of the present application ARM controller can configure exchange chip according to TRDP agreement, realize the ether between mobile unit
Network data communication；Meanwhile VLAN the and TRDP mistake between particular port can be realized by normal transmissions port and TRDP filtering port
Function is filtered, TRDP Packet Filtering and orientation, which forward, to be realized to particular port, avoids terminal device from the phenomenon that packet loss occur, improves
The real-time and reliability of the data transmission of rail traffic.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application range therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection model of the application
It encloses.Therefore, the scope of protection shall be subject to the appended claims by the application.
Claims (10)
1. a kind of TRDP protocol switch characterized by comprising exchanger core plate, Ethernet transformer and Ethernet
Interface；
The exchanger core plate includes the exchange chip of built-in ARM controller, and the interface electricity of the connection exchange chip
Road；The Ethernet interface includes normal transmissions port and TRDP filtering port；
The interface circuit is separately connected the normal transmissions port and the TRDP filter end by the Ethernet transformer
Mouthful；The normal transmissions port and the TRDP filtering port are used to connection train apparatus.
2. TRDP protocol switch according to claim 1, which is characterized in that the exchanger core plate further includes memory
Chip；
The exchange chip connects the memory chip.
3. TRDP protocol switch according to claim 2, which is characterized in that the memory chip is DDR3 memory core
Piece.
4. TRDP protocol switch according to claim 2, which is characterized in that further include power circuit；
The power circuit is separately connected the exchange chip and the memory chip.
5. TRDP protocol switch according to claim 4, which is characterized in that the power circuit includes switch voltage-stabilizing electricity
Source；
The switching power supply is separately connected the exchange chip and the memory chip.
6. TRDP protocol switch according to claim 4, which is characterized in that the switching power supply includes the first electricity
Source conversion chip, second source conversion chip and third power conversion chip；
First power conversion chip, the second source conversion chip connect the exchange chip；
The third power conversion chip is separately connected the exchange chip and the memory chip.
7. according to claim 1 to TRDP protocol switch described in 6 any one, which is characterized in that the exchange chip is
Three-tier switch chip；The interface circuit is gigabit interface circuit；The normal transmissions port and the TRDP filtering port
It is gigabit ethernet interface.
8. according to claim 1 to TRDP protocol switch described in 6 any one, which is characterized in that further include described in connection
The indicating equipment of exchanger core plate.
9. according to claim 1 to TRDP protocol switch described in 6 any one, which is characterized in that the normal transmissions end
Mouth is M12 interface or RJ45 interface.
10. according to claim 1 to TRDP protocol switch described in 6 any one, which is characterized in that the TRDP filter end
Mouth is M12 interface or RJ45 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920027271.4U CN209072531U (en) | 2019-01-08 | 2019-01-08 | TRDP protocol switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920027271.4U CN209072531U (en) | 2019-01-08 | 2019-01-08 | TRDP protocol switch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103838A (en) * | 2020-01-02 | 2020-05-05 | 中车青岛四方车辆研究所有限公司 | Main unit sub-system of active radial control system |
| CN111586498A (en) * | 2020-05-09 | 2020-08-25 | 贵州航天天马机电科技有限公司 | Multichannel high-speed data exchange equipment |
| CN115134430A (en) * | 2022-06-29 | 2022-09-30 | 清远众志诚科技有限公司 | TRDP memory |
-
2019
- 2019-01-08 CN CN201920027271.4U patent/CN209072531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103838A (en) * | 2020-01-02 | 2020-05-05 | 中车青岛四方车辆研究所有限公司 | Main unit sub-system of active radial control system |
| CN111586498A (en) * | 2020-05-09 | 2020-08-25 | 贵州航天天马机电科技有限公司 | Multichannel high-speed data exchange equipment |
| CN115134430A (en) * | 2022-06-29 | 2022-09-30 | 清远众志诚科技有限公司 | TRDP memory |
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