CN209345191U - A kind of train exchange apparatus based on Ethernet - Google Patents

Abstract

The utility model discloses a kind of train exchange apparatus based on Ethernet, belongs to electronic technology field, including shell, Switching Module, FPGA main control module, master control peripheral interface circuit and power module.Master control peripheral interface circuit is connect with FPGA main control module.Switching Module is connect with FPGA main control module.Power module connect power supply with Switching Module, FPGA main control module and master control peripheral interface circuit.Switching Module, FPGA main control module, master control peripheral interface circuit and power module setting are inside the shell.Voltage needed for power module converts input voltage into each module.The switch develops towards hommization, miniaturization and intelligentized direction, to be safely operated bullet train network under comprehensive state, there is provided it is a kind of with broadcast storm protection, network data transmission with exchange, reduces network blockage, Dynamic Host Configuration Protocol server, RS232 debugging and web access etc. functions switch, -40 DEG C of operating temperature range~85 DEG C.

Description

A kind of train exchange apparatus based on Ethernet

Technical field

The utility model relates to electronic technology field more particularly to a kind of train exchange apparatus based on Ethernet.

Background technique

The continuous development of train technical, rail traffic gradually develop to intelligent direction.Train obtains always safely people Pay attention to, wherein Train Communication Network is faced with many security risks, the networking of current bullet train intelligent information, industry with Network data transmission and exchange are carried out too under net environment, needs to build train backbone network, improve train operation efficiency, Logistics networks Operational safety realizes that train is safe and reliable, comfortable, efficient, green and sustainable, so train Ethernet exchanging node is wherein Status it is just more important.

The extensive application of Internet of Things and sensor in bullet train, all the time all along with magnanimity data transmission and Exchange, network data it is multi-source heterogeneous, caching, sharing and the processing of data bring complexity to train network, bear bigger Pressure.Train network faces potential threat, to make to carry out safe perception and Network Warning under bullet train comprehensive state, need to adopt Corresponding measure is taken to resist these threats, building has real-time, the Train Communication Network of high reliability and large capacity.Train The application of middle multimedia technology and internet, corresponding terminal device becomes diversification, such as video monitoring system for railway track, voice reporting The terminals such as alert and passenger information system require to use train Ethernet, however requirement of the train to traction, control and auxiliary etc. It is gradually increased, and terminal function constantly extends and the increase of mobile communication equipment, train network is faced with big challenge.Local area network Ethernet technology is widely applied in the communication technology, it has the characteristics that high cost performance, good compatibility and transmission speed are fast, to train Perception is of great significance comprehensive state with Network Warning safely.Train operation environment is changeable, to ensure that Train Communication Network is real When property and stability construct train backbone Ethernet, guarantee the smooth operation of Train Communication Network, the research of train switch It is of great significance.

Utility model content

The purpose of this utility model is to provide a kind of train exchange apparatus based on Ethernet, to solve background technique In the technical issues of being previously mentioned.For current Train Communication Network facing challenges, train switch hardware is designed. Switch develops towards hommization, miniaturization and intelligentized direction, to make bullet train network safety under comprehensive state Operation, provide it is a kind of have broadcast storm protection, network data transmission with exchange, reduce network blockage, Dynamic Host Configuration Protocol server, The switch of the functions such as RS232 debugging and web access, -40 DEG C of operating temperature range~85 DEG C.

A kind of train exchange apparatus based on Ethernet, including shell, Switching Module, FPGA main control module, outside master control Enclose interface circuit and power module, the master control peripheral interface circuit is connect with FPGA main control module, the Switching Module with The connection of FPGA main control module, the power module connect confession with Switching Module, FPGA main control module and master control peripheral interface circuit Electricity, the Switching Module, FPGA main control module, master control peripheral interface circuit and power module setting are inside the shell.Power module Voltage needed for converting input voltage into each module.

Master control peripheral interface module is configured with DDR2 module, expands memory to enhance CPU operational efficiency；USB module is extended, It is easy to use USB flash disk that system is configured and updated in train small space；EEPROM module stores program and data, improves Resource utilization；QSPI Flash module is mainly that the operating system file of interchanger and configuration file provide running space；When Clock module provides clock signal for Switching Module；Reseting module makes device reset starting again；It is extended to the outside out in RS232 module One meets the serial debugging interface Console of its level standard, can interchanger be safeguarded and be debugged when not tearing machine open；Bluetooth Transceiver module realizes interchanger and staff's data information transfer, is used to improve staff's working efficiency in train, And corresponding pairing password is arranged to bluetooth transceiver, avoid maloperation.

The power module containing there are two power supplys in interchanger, does not work at the same time, from power supply conduct there are redundancy structure Backup power source when mains power failure guarantees that interchanger is continually and steadily powered under complicated working environment, DC110V is converted For voltage needed for circuit.

Further, the master control peripheral interface circuit includes USB module, Bluetooth transceiver module, DDR2 module, QSPI Flash module, EEPROM module, clock module, reseting module and RS232 module, the FPGA main control module are received and dispatched through bluetooth Device module and external wireless structural device are wirelessly connected, the USB module, DDR2 module, QSPI Flash module, EEPROM mould Block, clock module, reseting module and RS232 module are connect with FPGA main control module.Guarantee interchanger steady operation, improves work Make performance.

Further, the periphery of the Switching Module is provided with M12 Network Interface Module and network transformer module, described Switching Module is connect through network transformer module with M12 Network Interface Module.Network transformer has electrical isolation and signal electricity Flat coupling function provides interface module abundant, builds the network architecture and is used for transmission data information, and the network interface number is 9, 6FE+3GE, and can be cascaded by exchange chip and network interface is extended.

Further, the periphery of the Switching Module is additionally provided with gigabit PHY module, and the gigabit PHY module setting exists Between network transformer module and Switching Module, the Switching Module is through gigabit PHY module and network transformer module and M12 net The connection of network interface module.

Further, the periphery of the Switching Module is additionally provided with LED light module, the LED light module with Switching Module connection.

Further, the M12 Network Interface Module include 10/100BASE-TX M12 Network Interface Module and The M12 Network Interface Module of 1000BASE-SX, M12 of the Switching Module through network transformer module and 10/100BASE-TX Network Interface Module connection, M12 net of the Switching Module through gigabit PHY module and network transformer module and 1000BASE-SX The connection of network interface module.Interface abundant is provided, M12 interface guarantees the reliability of connection in the running environment of train complexity.

Further, the side wall of the shell is provided with several heat release holes, and heat release hole is uniformly arranged, the heat dissipation of heat release hole Mode is cooling for free convection, cools down to shell and circuit.Side wall of outer shell is provided with multiple Homogeneouslly-radiating holes, and radiating mode is Free convection is cooling, and the peculiar construction of shell is made full use of to radiate, and guarantees that interchanger works at a suitable temperature.

The utility model uses above-mentioned technical proposal, and the utility model has following technical effect that

The utility model is the core of Train Communication Network, and gigabit Ethernet takes full-duplex mode, and low time delay is supported QoS and FTP service can introduce vlan technology and spanning tree redundancy.Constitute with CPU and the FPGA main control chip integrated and with Too net exchange chip be core switch.Interchanger contains there are two power module composition redundancy structure, is used as and leads from power supply Backup power source when power failure.Radiating mode is cooling for free convection, and side wall of outer shell is provided with multiple Homogeneouslly-radiating holes.Master control mould The plug-in Bluetooth transceiver module of block, for sending and receiving information to interchanger, it is convenient to facilitate.Switch design meets EN50155 standard, comprising: temperature range, voltage, surge, static discharge and vibration.

Detailed description of the invention

Fig. 1 is the utility model practical application panel schematic diagram.

Fig. 2 is that the utility model respectively forms partial schematic diagram.

Fig. 3 is the utility model one side wall heat release hole schematic diagram.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, referring to the drawings and enumerate excellent Embodiment is selected, the utility model is further described.However, it is necessary to illustrate, many details listed in specification It is specific even without these just for the sake of making reader have a thorough explanation to the one or more aspects of the utility model Details also may be implemented the utility model these aspect.

Referring to Fig. 1, the utility model provides a kind of practical application panel of train exchange apparatus based on Ethernet Schematic diagram, the switch are provided with power indication LED 1A, 5 needle power input ports in practical applications, on main panel 2A, reset button 3A, USB interface 4A, 10 LED port leds 5A, Console are DB9 interface E type (9 needle) 6A, locking spiral shell Keyhole 7A, Port_1 encode the fastening bolt holes that 4 needle M12 interfaces respectively correspond 8A to 16A, 4 installations to Port_9D type 17A, wherein Port_1 to Port_6 is 100,000,000 network interfaces, and Port_7 to Port_9 is gigabit networking interface.

Such as Fig. 2, the utility model device is mainly by power module 1 and 2, FPGA main control module 3, Switching Module 4, reset mould Block 5, QSPI Flash module 6, EEPROM module 7, RS232 module 8, DDR2 module 9, USB module 10, Bluetooth transceiver module 11, clock module 12, LED light module 13, M12 Network Interface Module 14, network transformer module 15, gigabit PHY module 16 and shell 17 form, the plug-in device of FPGA main control module 3 is collectively referred to as master control peripheral interface module, and radiating mode uses nature pair Stream cooling.

Such as Fig. 3, the heat release hole 18 mainly showed in interchanger shell one side wall is distributed, and side wall is provided with multiple Homogeneouslly-radiatings Hole 18, radiating mode is cooling for free convection, and the peculiar construction of shell is made full use of to radiate, and guarantees interchanger in suitable temperature The lower work of degree.

Embodiment 1

As shown in Fig. 2, Switching Module 4 is by the exchange chip that Marvell company model is 88E6185 and well known periphery electricity Road composition, plays the role of network data transmission and exchange.The main control chip that FPGA main control module 3 is integrated using CPU and FPGA, With management and routing function, in module with the main control chip of altera corp Cyclone series Cyclone V Sx Soc and Well-known peripheral circuit composition has the characteristics that configuration flexibly and powerful logic is integrated.The core USB PHY of USB module 10 by The chip and well-known peripheral circuit of FTDI business men model VNC2 forms, and USB PHY chip is connected with USB interface, convenient for easily Take configuration and update that formula USB flash disk carries out system.DDR2 module 9 will be MT47H64-M16 memory chip by Micron brand and model And well-known peripheral circuit composition, possess 128M capacity, improves the operational efficiency of CPU.QSPI Flash module 7 is used as main control module One of start-up mode, start fast speed, by the chip of Cypress business men model S25FL128SAGBHIA10 and known Peripheral circuit composition has and reduces package area, number of pins and the simple advantage of management.EEPROM module 7 store program and Data are made of the ATSHA204-TH-CZ-T chip and well-known peripheral circuit of ATMEL.RS232 module 8, which extends outward, to be met The serial debugging interface Console of its level standard, Console interface is DB9 interface E type (9 needle), mainly by MAXIM brand MAX3232 chip and well known peripheral circuit composition, snap-gauge installation after, can to switch safeguard and debug.Bluetooth is received The Blue Gecko bluetooth transceiver BT121 and well-known peripheral circuit that hair device module 11 is released by Silicon Labs are formed, side Just staff configures to interchanger and transmits information.Cache switching diodes 1N4446, reset switch and well known periphery electricity Road forms reseting module 5, and clock module 12 is 25MHz clock.Ke Naite company D type encodes 4 needle M12 interfaces as M12 network Interface module 14,10 port of USB module use USB3.0 interface.LED light module 13 contains 12 light emitting LED lamp instruction dresses Set working condition.Gigabit PHY module 16 is made of the chip that Marvell company model is 88E1112 and well-known peripheral circuit, is joined With building gigabit network interface.Pulse brand H1102NL, H5007NL and well-known peripheral circuit network consisting transformer module 15, Port_1 to Port_6 is connect with H1102NL, and Port_7 to Port_9 is connect with H5007NL.Shell 17 utilizes side wall heat release hole, It takes radiating mode cooling for free convection, guarantees that interchanger works at a suitable temperature.Power module 1 and 2 utilizes switch DC110V is converted to voltage needed for each module in device by power supply chip, which is LTC7801's by Linear company model Switching power source chip and well known peripheral circuit composition, input voltage range 4V~140V, output voltage range 0.8V~60V, Meet power reguirements.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, for For those skilled in the art, it is clear that the present invention is not limited to the details of the above exemplary embodiments, and without departing substantially from this In the case where the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by institute Attached claim rather than above description limit, it is intended that will fall within the meaning and scope of the equivalent elements of the claims All changes are embraced therein.It should not treat any reference in the claims as limiting related right It is required that.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, can also make several improvements and retouch, these improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (7)

1. a kind of train exchange apparatus based on Ethernet, it is characterised in that: including shell, Switching Module, FPGA master control mould Block, master control peripheral interface circuit and power module, the master control peripheral interface circuit are connect with FPGA main control module, the exchange Module is connect with FPGA main control module, the power module and Switching Module, FPGA main control module and master control peripheral interface circuit Connection power supply, the Switching Module, FPGA main control module, master control peripheral interface circuit and power module setting are inside the shell.

2. a kind of train exchange apparatus based on Ethernet according to claim 1, it is characterised in that: outside the master control Enclosing interface circuit includes USB module, Bluetooth transceiver module, DDR2 module, QSPI Flash module, EEPROM module, clock Module, reseting module and RS232 module, the FPGA main control module through Bluetooth transceiver module and external wireless structural device without Line connection, the USB module, DDR2 module, QSPI Flash module, EEPROM module, clock module, reseting module and RS232 module is connect with FPGA main control module.

3. a kind of train exchange apparatus based on Ethernet according to claim 1, it is characterised in that: the interchange mode The periphery of block is provided with M12 Network Interface Module and network transformer module, the Switching Module through network transformer module with The connection of M12 Network Interface Module.

4. a kind of train exchange apparatus based on Ethernet according to claim 3, it is characterised in that: the interchange mode The periphery of block is additionally provided with gigabit PHY module, the gigabit PHY module setting network transformer module and Switching Module it Between, the Switching Module is connect through gigabit PHY module and network transformer module with M12 Network Interface Module.

5. a kind of train exchange apparatus based on Ethernet according to claim 4, it is characterised in that: the interchange mode The periphery of block is additionally provided with LED light module, and the LED light module is connect with Switching Module.

6. a kind of train exchange apparatus based on Ethernet according to claim 4, it is characterised in that: the M12 net Network interface module includes the M12 Network Interface Module of 10/100BASE-TX and the M12 Network Interface Module of 1000BASE-SX, institute It states Switching Module to connect through the M12 Network Interface Module of network transformer module and 10/100BASE-TX, the Switching Module warp The connection of the M12 Network Interface Module of gigabit PHY module and network transformer module and 1000BASE-SX.

7. a kind of train exchange apparatus based on Ethernet according to claim 1, it is characterised in that: the shell Side wall is provided with several heat release holes, and heat release hole is uniformly arranged, and the radiating mode of heat release hole is that free convection is cooling, to shell and Circuit is cooled down.