CN102523143B - High-speed railway audio and video system - Google Patents
High-speed railway audio and video system Download PDFInfo
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- CN102523143B CN102523143B CN201110440395.3A CN201110440395A CN102523143B CN 102523143 B CN102523143 B CN 102523143B CN 201110440395 A CN201110440395 A CN 201110440395A CN 102523143 B CN102523143 B CN 102523143B
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Abstract
The invention discloses a high-speed railway audio and video system, which comprises trunk network switchboards connected to a trunk Ethernet running through a train in the form of a redundant topological structure, wherein the train is provided with three types of compartments; each compartment is provided with the corresponding trunk network switchboard; the trunk network switchboard in one of the compartments is connected with an audio and video system main controller and a calling display screen; the trunk network switchboard in each of the compartments of the first type is connected with an audio and video control box and a first system sub server for managing and controlling a loudspeaker; and the trunk network switchboard in each of the compartments of the second type and the third type is connected with a second system sub server for managing and controlling a signal board, the audio control box and the loudspeaker and a third system sub server for managing and controlling the signal board and the loudspeaker. According to the high-speed railway audio and video system, information can be transmitted stably and smoothly; playing functions can be controlled concentratively; audio and video signals can be well and synchronously displayed; and the audio and video system is butted with a broadcast system of the train.
Description
Technical field
The present invention relates to vehicle-mounted audio video transmission field, be specifically related to the audio-visual transmission of a kind of high ferro, broadcasting, control system.
Background technology
Along with the development of China's track traffic technology, the needs of passenger to train Intelligent Service, thereby directly towards passenger's vehicle carried video playing system, seem more and more important.But in the high ferro train enclosure space of high-speed cruising, realize and stablize unobstructed communication, the centralized control of playing function, the good result of audio-video signal output, system update is safeguarded the facilitation with failure diagnosis, still still in the problem of exploring in solving.
Meanwhile, taking over seamlessly between video-audio playing system and existing broadcasting for train is collaborative, not yet fine solution.
In existing play-back technology, make the program broadcasting of a plurality of screens reach the synchronism that human eye can not be distinguished degree, also not yet solve.
Summary of the invention
The deficiency existing in order to overcome prior art, the invention provides a kind of high ferro audio-video system, in solution prior art, train audio-video system is being subject in the train particular surroundingss such as electromagnetic interference, car body vibrations, operational shock of running at high speed, the transmission that information stability is unobstructed, the centralized control of playing function, good, the simultaneous display of audio-video signal, and audio-video system is with the docking problem of train broadcasting system.
To achieve the above object of the invention, the technical solution adopted in the present invention is:
Shown in Fig. 1, a kind of high ferro audio-video system, comprises
The main line Ethernet that runs through train;
Train divides the compartment of three types, and every joint is equipped with main line network switch in compartment, and main line network switch adopts the connected mode of dual-ring network redundant topology structure to be connected on main line Ethernet;
Audio-video system main control computer and call screen, be all connected on main line network switch;
On main line network switch in every joint the first type compartment, be connected with the first system child servers and several audio-video control boxes for management and control loud speaker, be connected with single control power amplifier in the first system child servers, single control power amplifier output connects loud speaker; On audio-video control box, be connected with earphone call panel and LCD touch-screen;
On main line network switch in every joint Second-Type compartment, be connected with the second system child servers for management and control signal plate, audio frequency control box and loud speaker, in second system child servers, be connected with dual control power amplifier and several signal plates, dual control power amplifier output connects several audio frequency control boxes and loud speaker, is connected with LCD screen on signal plate;
On main line network switch in every joint the 3rd type compartment, be connected with the 3rd system child servers for management and control signal plate and loud speaker, in the 3rd system child servers, be connected with single control power amplifier and several signal plates, single control power amplifier output connects loud speaker, is connected with LCD screen on signal plate.
Specific works principle is as follows:
If main line Ethernet connects full train, train main line Ethernet is divided into: Wi-Fi data communication and management domain, full train audio-video system management and control domain, audio and video data streams communication domain, and three communication domain, data flow each other does not affect.The interface that comprises same train broadcasting system in audio and video data streams communication domain, matches with a pair of passive normally opened contact of train broadcasting system inside, realizes the switching of docking of high ferro audio-video system and train broadcasting system.
Audio-video system main control computer is controlled whole system by RS485 bus comprehensively, comprises with FM broadcast system and is connected communication, carries out the setting of FM broadcast system position and frequency; The Play Control of multichannel audio-video frequency program; The Play Control of background music.
Audio-video system main control computer can carry out automated intelligent renewal to the store program content of each system child servers by Internet Transmission.In each system child servers of high ferro audio-video system, adopt technical grade embedded technology, the storage of audio, video data adopts the hard disk with earthquake resistant construction as storage medium.
Several audio-video control boxes in the first type compartment are together with the first system child servers, directly be connected in the first type compartment on switch, make the passenger in this type of compartment initiatively to call the program data in audio-video system by the LCD touch-screen being connected on audio-video control box, program data directly transmits with the form of network packet.
Every joint compartment is equipped with the main line network switch that adopts dual chip online backup Redundancy Design, and arranging of network configuration adopts dual-ring network redundant topology structure and looped network coupling phase incision technology; Audio-video system main control computer is managed concentratedly whole system, by main line Ethernet, the audio-video signal in audio-video system main control computer is sent to three kinds of system child servers in non real-time, three kinds of system child servers are play the program source on equipment separately, first the video VGA signal that will play output carries out differential coding, after coding, carry out remote transmission, before each terminal display screen, by signal plate, carry out differential decoding, be reduced to VGA signal and deliver to display screen broadcast.Audio-video system main control computer carries out Synchronization Control to program playing progress rate, and the control broadcasting time difference reaches the undistinguishable degree of human eye.
The present invention is relative and prior art, and advantage is:
1) because high ferro railway car distance, the connected node of transmission line is many, for guaranteeing the reliable and stable of network, adopts dual-ring network redundant topology structure and looped network coupling phase incision technology: dual-ring network redundant topology structure, when a network link breaks down, system can complete network reconfiguration automatically; Because audio-video system volume of transmitted data is large, so adopt looped network coupling tangent rings technology, can effectively reduce the number of network node of long communication path, shorten communication distance, when there is Single Point of Faliure, can, by carrying out network self-healing compared with short path, there is higher network performance.
2) high ferro audio-video system plays to audio frequency and video centralized management and the local mode combining of playing of adopting, by the real-time of centralized system, be easy to management, organically combine with the flexibility of local mode, low dependence, having overcome the broadcasting that distributes completely and being difficult to problem synchronous and inconvenience management.
3) video signal transmission is stable:
Because train is under high-speed cruising state, Video Controller is distant to video playing terminal, be easily disturbed, and the design of this high ferro audio-video system device has realized the stability of video signal transmission quality in signals transmission.
4) high ferro audio-video system docks with the switching of train broadcasting system:
By having the reception control of polarity and a pair of passive normally opened contact that train broadcasting system inside provides to connect; Audio-video system provides multipoint reception design, and has all kept the consistency of receiving polarity with each broadcast reception point, realizes audio-video system audio/video program and plays and dock with the instant of train broadcasting system.
Accompanying drawing explanation
Fig. 1 is the framework schematic diagram of a kind of high ferro audio-video system of the present invention.
Fig. 2 is the framework schematic diagram of a kind of high ferro audio-video system device of embodiments of the invention.
Embodiment
Embodiment 1
Shown in Fig. 2, a kind of high ferro audio-video system of the present invention, for the control and management of the input and output of video system in high ferro and audio system.On high ferro train, be provided with VIP compartment, first-class compartment and second coach, high ferro audio-video system of the present invention, by following concrete structure, realize the service and management to the different modes of VIP seat, first-class seat and second-class seat:
If the main line Ethernet of bandwidth 1000M connects full train, by main line Ethernet, carry out the management of audio-video system and control, and the transmission of the data such as movie and video programs, synchronization mechanism.In every joint compartments such as VIP compartment, first-class compartment, second coach and dining car, all establish the main line network switch that adopts dual chip online backup Redundancy Design, with the connected mode of dual-ring network redundant topology structure, be connected in main line Ethernet module.
Machine Room in dining car, establishes audio-video system main control computer and call screen, is connected on the main line network switch in this compartment, as administrative center and the deposit data center of full train audio-video system.
System child servers A is for the control and management of the audio-visual system in VIP compartment, on main line network switch in every joint VIP compartment, be connected with a system child servers A and several audio-video control boxes: on system child servers A, be connected single control power amplifier, single control power amplifier output only connects loud speaker; Audio-video control box is located at below each VIP seat, is connected with earphone call panel and LCD touch-screen on audio-video control box, and earphone call panel is provided with call button call function is provided;
The loud speaker being arranged on top board is play broadcast, and the passenger in VIP compartment can select to listen to the radio programme or select and watch and listen video and audio by being arranged on the other earphone in seat, also by LCD touch-screen, initiatively calls the program data in audio-video system.
System child servers B is for the control and management of the audio-visual system in first-class compartment, on main line network switch in the first-class compartment of every joint, be connected with a system child servers B: upper dual control power amplifier and several signal plates that is connected with LCD screen of connecting of system child servers B, dual control power amplifier output connects several audio frequency control boxes and loud speaker; Audio frequency control box is located at below each first-class seat, is connected with earphone control panel on audio frequency control box, and earphone control panel is provided with the selection of volume adjusting and program channel;
The loud speaker being arranged on top board is play broadcast, and the passenger in first-class compartment can select to listen the public to broadcast or select to watch and listen video by being arranged on earphone listening to audio and the LCD screen on side, seat.
System child servers C is for the control and management of the audio-visual system of second coach, on main line network switch in every joint second coach, be connected with a system child servers C: on system child servers C, be connected with single control power amplifier and several signal plates that is connected with LCD screen, single control power amplifier output only connects loud speaker;
The passenger of second coach watches movie and video programs to be arranged on the other LCD screen in seat, by the loud speaker being arranged on top board, listens to movie and video programs sound accompaniment.
By audio-video system main control computer, train is carried out to centralized control, the public audio/video program broadcasting is carried out to preview, supervision, monitoring etc.Audio-video system main control computer can deposit a large amount of video frequency programs in as program storage source, employing has the hard disk of earthquake resistant construction as storage medium, by high capacity U disc connected mode, can realize video system program and broadcast the automatic renewal of table, and have the setting of the function key such as selection, fast forwarding and fast rewinding, the selection of power-off play mode that realizes volume adjusting, program.
Audio-video system docks with the switching of train broadcasting system:
Per car is by a pair of passive normally opened contact that has the reception control of polarity and the inside of train broadcasting system to provide is provided, audio-video system provides multipoint reception design, and all kept the consistency of receiving polarity with each broadcasting for train acceptance point, taken into account and realize audio-video system middle pitch video program play and dock with the instant of train broadcasting system.
1) when train broadcasting system carries out the broadcast of background music, this instruction is passed through RS485 bus notification broadcast system plays background music by audio-video system main control computer, the source of sound of playing is MP3 or broadcast receiver program, by the total line traffic control audio-video system of train main line Ethernet, transfer full car loud speaker to background music broadcast state, but the seat earphone in VIP compartment and first-class compartment does not carry out background music broadcast switching simultaneously;
2) interim when there being bulletin broadcast, video pictures does not stop, and audio-video system transfers full car loud speaker to bulletin broadcast state, comprises that in the seat earphone in VIP compartment and first-class compartment, all channels all transfer bulletin broadcast state to; After bulletin off-the-air, automatically revert to original operating state.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. a high ferro audio-video system, is characterized in that, comprises
The main line Ethernet that runs through train;
Train divides the compartment of three types, and every joint is equipped with main line network switch in compartment, and main line network switch is connected on main line Ethernet with the connected mode of dual-ring network redundant topology structure;
Audio-video system main control computer and call screen, be all connected on main line network switch;
On main line network switch in every joint the first type compartment, be connected with the first system child servers and several audio-video control boxes for management and control loud speaker; in the first system child servers, be connected with single control power amplifier; single control power amplifier output connects loud speaker, is connected with earphone call panel and LCD touch-screen on described audio-video control box;
On main line network switch in every joint Second-Type compartment, be connected with the second system child servers for management and control signal plate, audio frequency control box and loud speaker, in second system child servers, be connected with dual control power amplifier and several signal plates, dual control power amplifier output connects several audio frequency control boxes and loud speaker;
On main line network switch in every joint the 3rd type compartment, be connected with the 3rd system child servers for management and control signal plate and loud speaker, be connected with single control power amplifier and several signal plates in the 3rd system child servers, single control power amplifier output connects loud speaker;
On several signal plates of described second system child servers and the 3rd system child servers, be all connected with LCD screen;
Described second system child servers and the 3rd system child servers are carried out Play Control to the program source on equipment separately, first the video VGA signal that will play carries out differential coding, after coding, carry out remote transmission, before each terminal display screen, by signal plate, carry out differential decoding again, be reduced to VGA signal and deliver to display screen broadcast;
Described main line Ethernet comprises: Wi-Fi data communication and management domain, full train audio-video system management and control domain and these three communication domain of audio and video data streams communication domain, and described main line network switch design adopts dual chip online backup; In described audio and video data streams communication domain, comprise the interface that docks train broadcasting system, connect with the passive normally opened contact of train broadcasting system inside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110440395.3A CN102523143B (en) | 2011-12-26 | 2011-12-26 | High-speed railway audio and video system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110440395.3A CN102523143B (en) | 2011-12-26 | 2011-12-26 | High-speed railway audio and video system |
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| CN102523143A CN102523143A (en) | 2012-06-27 |
| CN102523143B true CN102523143B (en) | 2014-10-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104702475A (en) * | 2013-12-05 | 2015-06-10 | 上海博泰悦臻电子设备制造有限公司 | Vehicle-mounted information system and networking method thereof |
| CN105407027B (en) * | 2014-05-28 | 2018-07-06 | 中车大连电力牵引研发中心有限公司 | Train network control system |
| CN112298222B (en) * | 2019-07-30 | 2022-12-09 | 株洲中车时代电气股份有限公司 | Rail vehicle and communication network thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262397A (en) * | 2008-04-21 | 2008-09-10 | 神州亿品科技有限公司 | Information system for passenger train broadcasting box and non broadcasting box |
| CN201418131Y (en) * | 2009-06-18 | 2010-03-03 | 福州星网视易信息系统有限公司 | Train entertainment system based on digit signal |
| CN102098535A (en) * | 2010-12-13 | 2011-06-15 | 青岛四方车辆研究所有限公司 | Video entertainment service call system of train |
| CN202353581U (en) * | 2011-12-26 | 2012-07-25 | 易程（苏州）智能系统有限公司 | Bullet train audio-video device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6973479B2 (en) * | 2002-05-01 | 2005-12-06 | Thales Avionics, Inc. | Method and system for configuration and download in a restricted architecture network |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101262397A (en) * | 2008-04-21 | 2008-09-10 | 神州亿品科技有限公司 | Information system for passenger train broadcasting box and non broadcasting box |
| CN201418131Y (en) * | 2009-06-18 | 2010-03-03 | 福州星网视易信息系统有限公司 | Train entertainment system based on digit signal |
| CN102098535A (en) * | 2010-12-13 | 2011-06-15 | 青岛四方车辆研究所有限公司 | Video entertainment service call system of train |
| CN202353581U (en) * | 2011-12-26 | 2012-07-25 | 易程（苏州）智能系统有限公司 | Bullet train audio-video device |
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