CN110943847B - Vehicle-mounted network access equipment, train and information interaction system - Google Patents
Vehicle-mounted network access equipment, train and information interaction system Download PDFInfo
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- CN110943847B CN110943847B CN201811106719.8A CN201811106719A CN110943847B CN 110943847 B CN110943847 B CN 110943847B CN 201811106719 A CN201811106719 A CN 201811106719A CN 110943847 B CN110943847 B CN 110943847B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
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Abstract
The invention discloses a vehicle-mounted network access device, a train and an information interaction system, wherein the vehicle-mounted network access device comprises a power interface, a POE (power over Ethernet) interface, a routing board card and a switch board card, wherein the routing board card is connected with the switch board card, the power interface is used for externally connecting a power supply, and the power interface is respectively connected with the routing board card and the switch board card so as to supply power to the routing board card and the switch board card; the switch integrated circuit board includes switch processing module and POE control module, and switch processing module includes the switch chip, and wherein, the POE interface is connected with switch processing module, POE control module and power source interface respectively for information acquisition equipment on the external train provides ethernet and power supply to information acquisition equipment. From this to on the one hand, simplified the hookup wiring of on-vehicle network access equipment, on the other hand makes can directly supply power for information acquisition equipment through the POE interface in the on-vehicle network access equipment, need not additionally to lay the power cord for information acquisition equipment again.
Description
Technical Field
The invention relates to the technical field of trains, in particular to a vehicle-mounted network access device, a train and an information interaction system.
Background
In recent years, with the acceleration of economic development and urbanization process, urban rail transit is rapidly developed in all big cities in China, and becomes an optimal solution for relieving urban traffic jam and realizing smooth travel by the outstanding advantages of convenience, rapidness, safety, reliability, strong carrying capacity and the like.
In the related art, as shown in fig. 1, a schematic diagram of a communication network System of a rail transit train is that a route vehicle-mounted access device is connected to a switch B to process other services such as a Passenger Information System (PIS) and a video surveillance (CCTV) System on the train. A Train Control System (CBTC) device is mounted on the switch a, and is connected to the switch B. Network video cameras and the like are connected to the switch B, however, the switch B cannot provide power to the cameras, and additional rewiring of power lines is required. In addition, a Train Control and Management System (TCMS) device is also provided with a switch C, and is connected with the CBTC switch a. Therefore, it can be seen that the network device required by the integrated bearer network in the communication network system is composed of one route vehicle-mounted access device and three switches. Therefore, the train space occupied by the network equipment bearing the train communication network function is large, each network equipment needs to be supplied with power by an independent power supply, the network equipment needs to be connected by an Ethernet cable, the structural wiring is quite complex, the construction wiring is troublesome, and the equipment debugging is various.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, an object of the present invention is to provide a vehicle-mounted network access device, which supplies power to a routing board card and a switch board card through a uniform power interface, and a POE interface is disposed in the vehicle-mounted network access device, so that on one hand, connection and wiring of the vehicle-mounted network access device are simplified, and on the other hand, power can be directly supplied to an information acquisition device through the POE interface in the vehicle-mounted network access device, and no power line needs to be additionally disposed for the information acquisition device.
A second object of the invention is to propose a train.
The third purpose of the invention is to provide an information interaction system.
In order to achieve the above object, the vehicle-mounted network access device provided in the first aspect of the present invention includes a power interface, a POE interface over ethernet, a routing board card, and a switch board card, where the routing board card is connected to the switch board card, the power interface is used for connecting an external power supply, and the power interface is connected to the routing board card and the switch board card respectively to supply power to the routing board card and the switch board card; switch integrated circuit board, including switch processing module and POE control module, switch processing module includes the switch chip, wherein, the POE interface, respectively with switch processing module and POE control module connect for information acquisition equipment on the external train, with right information acquisition equipment provides ethernet and power supply.
According to the vehicle-mounted network access equipment provided by the embodiment of the invention, the routing board card and the switch board card are supplied with power through the uniform power interface, and the POE interface is arranged in the vehicle-mounted network access equipment, so that on one hand, the connection wiring of the vehicle-mounted network access equipment is simplified, on the other hand, the information acquisition equipment can be directly supplied with power through the POE interface in the vehicle-mounted network access equipment, and no power line needs to be additionally arranged for the information acquisition equipment.
In one embodiment of the present invention, the on-board network access device further includes a first communication interface, and the switch processing module further includes a train backbone unit and an ethernet networking unit, wherein,
the first communication interface is respectively connected with the train backbone network unit, the Ethernet networking unit and the switch chip and is used for externally connecting a train control and management system of the train.
In one embodiment of the present invention, the in-vehicle network access device further includes a second communication interface, and the switch processing module further includes a multicast unit, wherein,
and the second communication interface is respectively connected with the multicast unit and the switch chip and is used for externally connecting a passenger information system of the train.
In an embodiment of the present invention, the second communication interface is further configured to externally connect an information display device on the train.
In one embodiment of the invention, the in-vehicle network access device further comprises a third communication interface, wherein,
and the third communication interface is connected with the switch chip and is used for externally connecting the train control system of the train.
In one embodiment of the present invention, the routing board includes an LTE-U communication module and a routing processing module, and the LTE-U communication module is connected to the routing processing module.
In an embodiment of the present invention, the routing board further includes a first voltage conversion module, and the power interface is connected to the routing processing module through the first voltage conversion module.
In an embodiment of the present invention, the switch board further includes a second voltage conversion module, the power interface is connected to the POE control module through the second voltage conversion module, and the power interface is connected to the switch processing module through the second voltage conversion module.
In an embodiment of the present invention, the vehicle-mounted network access device further includes a backplane, wherein the routing board card is connected to the switch board card through the backplane.
In order to achieve the above object, a second aspect of the present invention provides a train including the on-board network access device implemented in the first aspect.
According to the train provided by the embodiment of the invention, the power interface in the vehicle-mounted network access equipment is used for supplying power to the routing board card and the switch board card, and the POE interface is arranged in the vehicle-mounted network access equipment, so that on one hand, the connection wiring of the vehicle-mounted network access equipment is simplified, on the other hand, the information acquisition equipment can be directly supplied with power through the POE interface in the vehicle-mounted network access equipment, and no power line needs to be additionally arranged for the information acquisition equipment.
In order to achieve the above object, a second aspect of the present invention provides an information interaction system, where the information interaction system includes a train and a vehicle-mounted network access device, the train includes a power module and an information acquisition device, the vehicle-mounted network access device includes a power interface, a POE interface for power over ethernet, a routing board card and a switch board card, and the routing board card is connected to the switch board card, where the power interface is used for externally connecting the power module, and the power interface is connected to the routing board card and the switch board card respectively to supply power to the routing board card and the switch board card; the switch integrated circuit board includes switch processing module and POE control module, switch processing module includes the switch chip, wherein, the POE interface, respectively with switch processing module, POE control module with power source interface connects, is used for externally information acquisition equipment, with right information acquisition equipment provides ethernet and power supply.
In an embodiment of the present invention, the train further includes a train control and management system, the vehicle-mounted network access device further includes a first communication interface, and the switch processing module further includes a train backbone network unit and an ethernet networking unit, wherein the first communication interface is connected to the train backbone network unit, the ethernet networking unit and the switch chip, and is configured to externally connect the train control and management system.
In an embodiment of the present invention, the train further includes a passenger information system, the vehicle-mounted network access device further includes a second communication interface, and the switch processing module further includes a multicast unit, where the second communication interface is respectively connected to the multicast unit and the switch chip; the passenger information system is connected with the second communication interface.
In an embodiment of the present invention, the train further includes an information display device, and the second communication interface is further configured to be externally connected to the information display device.
In an embodiment of the present invention, the train further includes a train control system, and the vehicle-mounted network access device further includes a third communication interface, where the third communication interface is connected to the switch chip; the train control system is connected with the third communication interface.
In an embodiment of the present invention, the train control system further includes a plurality of on-board network access devices, and the train control system is connected to each on-board network access device.
According to the information interaction system, the power interface in the vehicle-mounted network access equipment is used for supplying power to the routing board card and the switch board card, and the POE interface is arranged in the vehicle-mounted network access equipment, so that on one hand, the connection wiring of the vehicle-mounted network access equipment is simplified, on the other hand, the POE interface in the vehicle-mounted network access equipment can be used for directly supplying power to the information acquisition equipment, and no power line needs to be additionally arranged for the information acquisition equipment.
Drawings
Fig. 1 is a schematic structural diagram of a communication network system of a conventional rail transit train;
FIG. 2 is a schematic diagram of an in-vehicle network access device according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a vehicle-mounted network access device according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a connection between a vehicle-mounted network access device and a device on a train according to an embodiment of the present invention;
FIG. 5 is a schematic illustration of a train configuration according to one embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an information interaction system according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an information interaction system according to another embodiment of the present invention.
Reference numerals:
the train control and management system comprises a vehicle-mounted network access device 1, a power interface 11, a Power Over Ethernet (POE) interface 12, a routing board 13, a switch board 14, a first communication interface 15, a second communication interface 16, a third communication interface 17, a switch processing module 141, a POE control module 142, a switch chip 1411, a train backbone network unit 1412, an Ethernet networking unit 1413, a multicast unit 1414, an LTE-U communication module 131, a routing processing module 132, a first voltage conversion module 143, a second voltage conversion module 144, a train 20, a power module 21, information acquisition equipment 22, a train control and management system 23, a passenger information system 24, information display equipment 25 and a train control system 26.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a vehicle-mounted network access device, a train, and an information interaction system according to an embodiment of the present invention with reference to the drawings.
Fig. 2 is a schematic structural diagram of a vehicle-mounted network access device according to an embodiment of the present invention.
As shown in fig. 2, the vehicle-mounted network access device 1 includes a power interface 11, a poe (power On ethernet) interface 12, a routing board 13, and a switch board 14, where the routing board 13 is connected to the switch board 14, and in which,
and the power supply interface 11 is respectively connected with the routing board card 13 and the switch board card 14.
The power interface 11 is used for an external power supply to supply power to the routing board card 13 and the switch board card 14.
The switch board 14 includes a switch processing module 141 and a POE control module 142, the switch processing module 141 includes a switch chip 1411, wherein,
and the POE interface 12 is connected with the switch chip 1411, the POE control module 142 and the power interface 11 respectively, and is used for externally connecting information acquisition equipment on the train to provide ethernet and power supply for the information acquisition equipment.
The information acquisition device may include an image recognition device, for example, the information acquisition device may be a camera device.
Wherein, the switch chip can be a three-layer switch chip.
It should be noted that the switch board card is provided with a three-layer switching function module, and specifically, the three-volume switch chip is located in the three-volume switching function module.
In order to improve the processing performance of the switch board 14, as an example, the switch chip 1411 may be a three-layer switch chip with a dual core greater than 1G.
According to the vehicle-mounted network access equipment provided by the embodiment of the invention, the routing board card and the switch board card are supplied with power through the uniform power interface, and the POE interface is arranged in the vehicle-mounted network access equipment, so that on one hand, the connection wiring of the vehicle-mounted network access equipment is simplified, on the other hand, the information acquisition equipment can be directly supplied with power through the POE interface in the vehicle-mounted network access equipment, and no power line needs to be additionally arranged for the information acquisition equipment.
In addition, it should be noted that, the vehicle-mounted network access device of this embodiment can maximally exert the maximum performance of the routing + switching module through the mutual cooperation of the routing board card and the switch board card. The data communication volume of the board card side of the switch is large, but the routing addressing capability is insufficient. The system accesses data, and after the switch board card performs address filtering and broadcast storm suppression, the data of the switch board card are all valid data, and the data volume is greatly reduced. The routing board only needs to communicate the effective data, and can fully exert the characteristics of strong routing addressing capability but unsuitability for large data interaction.
In addition, in this embodiment, the routing board card in the vehicle-mounted network access device is connected to the switch board card, that is, the switch board card is connected to the fixed routing board card, so that the switch does not need to dynamically switch with an IP address transmitted from a Remote video Unit (RRU), thereby avoiding the influence of dynamic network oscillation on the vehicle-mounted network access device, and improving the stability of the vehicle-mounted network access device.
In one embodiment of the present invention, in order to enrich the functions of the vehicle-mounted network access device 1, a vehicle-mounted network access device 1 with multiple functions is provided, on the basis of fig. 2, as shown in fig. 3, the vehicle-mounted network access device 1 may further include a first communication interface 15, the switch processing module 141 further includes a train backbone network unit 1412 and an ethernet networking unit 1413, wherein,
the first communication interface 15 is connected to a Train Backbone (ETB) unit, an Ethernet networking (ECN) unit, and a switch chip 1411, respectively, and is configured to externally connect to a Train control and management system of a Train.
In this example, the vehicle-mounted network access device 1 having the Train backbone function and the Train backbone function is provided, so that a Train Control and Management System (TCMS) is accessed to the vehicle-mounted network access device 1 through the first communication interface 15, which facilitates the Train Control and Management System to perform corresponding operations according to the Train backbone and the ethernet function in the vehicle-mounted network access device 1.
As an exemplary embodiment, in order to facilitate the user to connect the train control and management system to the first communication interface 15, a prompt flag may be further set beside the first communication interface 15 of the vehicle network access device 1, so as to facilitate the user to identify that the train control and management system is connected to the correct communication interface according to the prompt.
Wherein the hint flag is used to identify that the first communication interface 15 has ETB/ECN functionality.
In one embodiment of the present invention, in order to reduce the data transmission traffic, as shown in fig. 3, the vehicle-mounted network access device 1 further includes the second communication interface 16, and the switch processing module 141 further includes the multicast unit 1414, wherein,
and a second communication interface 16, which is connected to the multicast unit 1414 and the switch chip 1411, respectively, for externally connecting to the passenger information system of the train.
In this example, by providing the multicast unit 1414 in the in-vehicle network access device 1, the in-vehicle network access device 1 supports the multicast function, which facilitates the passenger information system of the train to send related data through the multicast function, and reduces the traffic volume of service data transmission in the train communication system.
As an exemplary embodiment, the second communication interface 16 is also used to externally connect an information display device on the train.
It should be noted that, in order to improve the riding experience of the user, as an exemplary embodiment, an information display device is disposed in each car on the train.
In this example, after the vehicle-mounted network access device 1 receives the video data delivered from the ground, the multicast unit 1414 in the vehicle-mounted network access device 1 may send the video data to the information display device participating in multicast.
Specifically, after the in-vehicle network access device 1 copies one copy of video data and broadcasts the video data, each information display device participating in the multicast may receive the video data. Thereby, the traffic volume of the traffic data transmission is reduced.
As an exemplary embodiment, in order to further enrich the functionality of the on-board network access device 1 such that all devices on the train can communicate through the on-board network access device 1, as shown in fig. 3, the on-board network access device 1 further comprises a third communication interface 17, wherein,
and a third communication interface 17 connected to the switch chip 1411, for externally connecting to a train control system of the train.
As an exemplary implementation manner, in order to enable the vehicle-mounted network access device 1 to support LTE-U (long Term evolution) unlicensed spectrum) communication, as shown in fig. 3, the routing board 13 may include an LTE-U communication module 131 and a routing processing module 132, where the LTE-U communication module 131 is connected to the routing processing module 132. Therefore, the data communication between the train and the ground is realized through the routing board card.
It should be noted that the number of each of the first communication interface 15, the second communication interface 16, and the third communication interface 17 may be one or more, and this embodiment is not limited thereto.
It should be understood that the route processing module 132 may also be configured to set an IP-based priority order, and when the communication rate is limited, it may be specified that specific IP data can be preferentially transmitted, so as to ensure that train driving safety information can not be affected.
It should be noted that, the priority of the conventional route access device is scheduled by the RRU side, and the route processing module 132 in the vehicle-mounted network access device 1 sets the priority order based on the IP. Therefore, the response speed of the vehicle-mounted network access device 1 of the embodiment of the present invention is faster than that of the conventional method for acquiring the priority from the RRU side.
It should be understood that, in practical applications, the voltage provided by the external power supply may not be consistent with the voltage required by the routing processing module 132, and in order to provide the routing processing module 132 with a voltage suitable for the external power supply, in an embodiment of the present invention, as shown in fig. 3, the routing board 13 further includes a first voltage conversion module 143, and the power interface 11 is connected to the routing processing module 132 through the first voltage conversion module 143.
The first voltage conversion module 143 may be a DC/DC converter.
It should be understood that, in practical applications, the voltage provided by the external power supply may be different from the voltages required by the POE control module 142 and the switch processing module 141, and in order to provide the voltages required by the POE control module 142 and the switch processing module 141, in an embodiment of the present invention, as shown in fig. 3, the switch board 14 further includes a second voltage conversion module 144, the power interface 11 is connected to the POE control module 142 through the second voltage conversion module 144, and the power interface 11 is connected to the switch processing module 141 through the second voltage conversion module 144.
The second voltage conversion module 144 may be a DC/DC converter.
It should be understood that the routing board 13 and the switch board 14 in the vehicle-mounted network access device 1 may be connected in various ways, for example, an interface of the routing board 13 is connected with an interface of the switch board 14 through an ethernet cable, or the routing board 13 is connected with the switch board 14 through a wireless manner.
As an exemplary implementation manner, the vehicle-mounted network access device 1 further includes a backplane (not shown in the figure), wherein the routing board 13 and the switch board 14 are connected through the backplane.
Fig. 4 is a schematic structural diagram of connection between the vehicle-mounted network access device 1 and a device on a train according to an embodiment of the present invention.
It should be noted that fig. 4 illustrates that the information acquisition device is a camera device, and both the first voltage conversion module 143 and the second voltage conversion module 144 are DC/DC converters.
In order to realize the embodiment, the invention further provides a train.
Fig. 5 is a schematic structural diagram of a train according to an embodiment of the present invention.
As shown in fig. 5, the train 1 includes the on-board network access device 1 of the above embodiment.
It should be noted that the above explanation on the embodiment of the vehicle-mounted network access device 1 is also applicable to the embodiment, and details of the embodiment are not repeated herein, and refer to the description on the vehicle-mounted network access device 1 specifically.
According to the train provided by the embodiment of the invention, the power interface in the vehicle-mounted network access equipment is used for supplying power to the routing board card and the switch board card, and the POE interface is arranged in the vehicle-mounted network access equipment, so that on one hand, the connection wiring of the vehicle-mounted network access equipment is simplified, on the other hand, the information acquisition equipment can be directly supplied with power through the POE interface in the vehicle-mounted network access equipment, and no power line needs to be additionally arranged for the information acquisition equipment.
Fig. 6 is a schematic structural diagram of an information interaction system according to an embodiment of the present invention.
It should be noted that the information interaction system is applied to a train.
As shown in fig. 6, the information interaction system includes a train 20 and a vehicle-mounted network access device 1, the train 20 includes a power module 21 and an information acquisition device 22, the vehicle-mounted network access device 1 includes a power interface 11, a POE power over ethernet interface 12, a routing board 13 and a switch board 14, the routing board 13 is connected to the switch board 14, wherein,
the power supply interface 11 is used for externally connecting a power supply module 21, and the power supply interface 11 is respectively connected with the routing board card 13 and the switch board card 14 so as to supply power to the routing board card 13 and the switch board card 14.
The switch board 14 includes a switch processing module 141 and a POE control module 142, the switch processing module 141 includes a switch chip 1411, wherein,
and the POE interface 12 is connected with the switch chip 1411, the POE control module 142 and the power interface 11 respectively, and is used for externally connecting the information acquisition device 22 so as to provide ethernet and power supply for the information acquisition device 22.
In one embodiment of the present invention, as shown in fig. 7, the train 20 further includes a train control and management system 23, the on-board network access device 1 further includes a first communication interface 15, the switch processing module 141 further includes a train backbone unit 1412 and an ethernet networking unit 1413, wherein,
the first communication interface 15 is connected to the train backbone unit 1412, the ethernet networking unit 1413, and the switch chip 1411, respectively, and is configured to externally connect to the train control and management system 23.
In one embodiment of the present invention, as shown in fig. 7, the train 20 further comprises a passenger information system 24, the vehicle-mounted network access device 1 further comprises a second communication interface 16, the switch processing module 141 further comprises a multicast unit 1414, wherein,
a second communication interface 16 connected to the multicast unit 1414 and the switch chip 1411, respectively;
the passenger information system 24 is connected to the second communication interface 16.
In one embodiment of the present invention, as shown in fig. 7, the train 20 further includes an information display device 25, and the second communication interface 16 is further configured to be externally connected to the information display device 25.
In one embodiment of the invention, as shown in fig. 5, the train 20 further comprises a communication based train 20 control system, the on-board network access device 1 further comprises a third communication interface 17, wherein,
a third communication interface 17 connected to the switch chip 1411;
the communication-based train 20 control system is connected to the third communication interface 17.
In one embodiment of the present invention, in order to avoid a single vehicle-mounted network access device 1 from malfunctioning and affecting the communication of the train 20, the vehicle-mounted network access device 1 comprises a plurality of train control systems 26 respectively connected with each vehicle-mounted network access device 1. Therefore, the redundant backup of the vehicle-mounted network access equipment 1 is realized, and the stability of the information interaction system is improved.
As a possible implementation manner, two vehicle-mounted network access devices 1 may be provided, that is, two wireless routing boards 13 and two switch boards 14 are provided at the same time. And in normal operation, the A network is formed by the A route board card 13 and the A switch board card. The traffic-related CBTC service is run above. The other network runs the PIS related service. When one of the networks fails, the service operated on the failed network is transferred to a network to be operated temporarily. And under the condition of limited bandwidth, key services related to driving are not influenced according to the priority of the services.
According to the information interaction system, the power interface in the vehicle-mounted network access equipment is used for supplying power to the routing board card and the switch board card, and the POE interface is arranged in the vehicle-mounted network access equipment, so that on one hand, the connection wiring of the vehicle-mounted network access equipment is simplified, on the other hand, the POE interface in the vehicle-mounted network access equipment can be used for directly supplying power to the information acquisition equipment, and no power line needs to be additionally arranged for the information acquisition equipment.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (14)
1. A vehicle network access device, comprising a power interface, a POE interface, a routing board card and a switch board card, wherein the routing board card is connected with the switch board card,
the power interface is used for connecting an external power supply, and is respectively connected with the routing board card and the switch board card so as to supply power to the routing board card and the switch board card;
the switch board card comprises a switch processing module and a POE control module, the switch processing module comprises a switch chip, wherein,
the POE interface is respectively connected with the switch chip, the POE control module and the power interface and is used for being externally connected with information acquisition equipment on a train so as to provide Ethernet and power supply for the information acquisition equipment;
wherein the vehicle-mounted network access equipment further comprises a first communication interface, the switch processing module further comprises a train backbone network unit and an Ethernet networking unit, wherein,
the first communication interface is respectively connected with the train backbone network unit, the Ethernet networking unit and the switch chip and is used for externally connecting a train control and management system of the train.
2. The device of claim 1, wherein the in-vehicle network access device further comprises a second communication interface, the switch processing module further comprises a multicast unit, wherein,
and the second communication interface is respectively connected with the multicast unit and the switch chip and is used for externally connecting a passenger information system of the train.
3. The device of claim 2, wherein the second communication interface is further configured to externally connect to an information display device on the train.
4. The device of claim 1, wherein the in-vehicle network access device further comprises a third communication interface, wherein,
and the third communication interface is connected with the switch chip and is used for externally connecting the train control system of the train.
5. The device of claim 1, wherein the routing board card comprises an LTE-U communication module and a routing processing module, the LTE-U communication module being connected with the routing processing module.
6. The device of claim 5, wherein the routing board card further comprises a first voltage conversion module, and wherein the power interface and the routing processing module are connected through the first voltage conversion module.
7. The apparatus of claim 1, wherein the switch board card further comprises a second voltage conversion module, the power interface and the POE control module are connected through the second voltage conversion module, and the power interface and the switch processing module are connected through the second voltage conversion module.
8. The apparatus of any one of claims 1-7, wherein the in-vehicle network access device further comprises a backplane,
the routing board card is connected with the switch board card through the backboard.
9. A train, characterized in that the train comprises an on-board network access device according to any of claims 1-8.
10. An information interaction system is characterized in that the information interaction system comprises a train and a vehicle-mounted network access device, the train comprises a power module and an information acquisition device, the vehicle-mounted network access device comprises a power interface, a POE (power over Ethernet) interface, a routing board card and a switch board card, the routing board card is connected with the switch board card, wherein,
the power interface is used for being externally connected with the power module, and is respectively connected with the routing board card and the switch board card so as to supply power to the routing board card and the switch board card;
the switch board card comprises a switch processing module and a POE control module, the switch processing module comprises a switch chip, wherein,
the POE interface is respectively connected with the switch chip, the POE control module and the power interface and is used for being externally connected with the information acquisition equipment so as to provide Ethernet and power supply for the information acquisition equipment;
wherein the train further comprises a train control and management system, the vehicle-mounted network access device further comprises a first communication interface, the switch processing module further comprises a train backbone network unit and an Ethernet network unit, wherein,
the first communication interface is connected with the train backbone network unit, the Ethernet networking unit and the switch chip and is used for being externally connected with the train control and management system.
11. The system of claim 10, wherein the train further comprises a passenger information system, the on-board network access device further comprises a second communication interface, the switch processing module further comprises a multicast unit, wherein,
the second communication interface is respectively connected with the multicast unit and the switch chip;
the passenger information system is connected with the second communication interface.
12. The system of claim 11, wherein the train further comprises an information display device, and the second communication interface is further configured to externally connect the information display device.
13. The system of claim 10, wherein the train further comprises a train control system, the on-board network access device further comprises a third communication interface, wherein,
the third communication interface is connected with the switch chip;
the train control system is connected with the third communication interface.
14. The system of claim 13, wherein said on-board network access device comprises a plurality of said train control systems respectively connected to each of said on-board network access devices.
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