CN102523143A - High-speed railway audio and video system - Google Patents
High-speed railway audio and video system Download PDFInfo
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- CN102523143A CN102523143A CN2011104403953A CN201110440395A CN102523143A CN 102523143 A CN102523143 A CN 102523143A CN 2011104403953 A CN2011104403953 A CN 2011104403953A CN 201110440395 A CN201110440395 A CN 201110440395A CN 102523143 A CN102523143 A CN 102523143A
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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 frequency and video transmission field, be specifically related to the audio-visual transmission of a kind of high ferro, broadcast, control system.
Background technology
Along with the development of China track traffic technology, the passenger is to the needs of the intelligent service of train, thereby directly seems more and more important towards passenger's vehicle carried video playing system.But in the high ferro train enclosure space of high-speed cruising, realize stablizing unobstructed message transmission, 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.
Simultaneously, taking over seamlessly between video-audio playing system and existing broadcasting for train is collaborative, not fine as yet solution.
In the existing play-back technology, make the playing programs of a plurality of screens reach the synchronism that human eye can not be distinguished degree, also still unresolved.
Summary of the invention
In order to overcome the deficiency that prior art exists; The present invention provides a kind of high ferro audio-video system; The train audio-video system is subject in the train particular surroundingss such as electromagnetic interference, car body vibrations, operational shock the transmission that information stability is unobstructed, the centralized control of playing function what run at high speed in the solution prior art; Good, the demonstration synchronously of audio-video signal, and audio-video system is with the butt joint problem of train broadcast system.
For reaching the foregoing invention purpose, the technical scheme that the present invention adopted is:
In conjunction with shown in Figure 1, a kind of high ferro audio-video system comprises
The main line Ethernet that runs through train;
Train divides three types compartment, and every joint is equipped with the main line network switch in the compartment, and the main line network switch adopts the connected mode of dual-ring network redundant topology structure to be connected on the main line Ethernet;
Audio-video system main control computer and call screen all are connected on the main line network switch;
Be connected with the first system's child servers and several audio frequency and video control boxes that are used for the management and control loud speaker on the main line network switch in every joint first type compartment, be connected with single control power amplifier on first system's child servers, single control power amplifier output connects loud speaker; Be connected with earphone call panel and LCD touch-screen on the audio frequency and video control box;
Be connected with the second system's child servers that is used for management and control signal plate, audio frequency control box and loud speaker on the main line network switch in every joint second type compartment; Be connected with two control power amplifiers and several signal plates on second system's child servers; Two control power amplifier outputs connect several audio frequency control box and loud speakers, are connected with the LCD screen on the signal plate;
Be connected with the tertiary system system child servers that is used for management and control signal plate and loud speaker on the main line network switch in every joint the 3rd type compartment; Be connected with single control power amplifier and several signal plates on the tertiary system system child servers; Single control power amplifier output connects loud speaker, is connected with the LCD screen on the signal plate.
Concrete operation principle is following:
If the 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 does not each other influence.Comprise the interface with the train broadcast system in the audio and video data streams communication domain, a pair of passive normally opened contact inner with train broadcasting system is complementary, and realizes the switching of docking of high ferro audio-video system and train broadcasting system.
The audio-video system main control computer is controlled whole system through the RS485 bus comprehensively, comprises with the FM broadcast system being 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.
The audio-video system main control computer can carry out automated intelligent to the store program content of each system's child servers through Network Transmission to be upgraded.Adopt the technical grade embedded technology in each system's child servers of high ferro audio-video system, the storage of audio, video data adopts the hard disk with earthquake resistant construction as storage medium.
Several audio frequency and video control boxes in the first type compartment are with first system's child servers; Directly be connected in the first type compartment on the switch; Make the passenger in this type of compartment initiatively to call the program data in the audio-video system through the LCD touch-screen that is connected on the audio frequency and 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 the hot machine standby redundancy of twin-core sheet to design, and dual-ring network redundant topology structure and looped network coupling incision technology is mutually adopted in being provided with of network configuration; The audio-video system main control computer is managed concentratedly whole system; Through the main line Ethernet audio-video signal in the audio-video system main control computer is sent to three kinds of system's child servers in non real-time; Three kinds of system's child servers are play the program source on the equipment separately, and the video VGA signal that at first will play output carries out differential coding, carries out remote transmission behind the coding; Before each terminal display screen, carry out differential decoding, be reduced to the VGA signal and deliver to the display screen broadcast through signal plate.The audio-video system main control computer carries out Synchronization Control to the playing programs progress, and the controls playing time difference reaches the undistinguishable degree of human eye.
The present invention's advantage relative and prior art is:
1) because high ferro railway car distance; The connected node of transmission line is many, and for guaranteeing the reliable and stable of network, employing dual-ring network redundant topology structure and looped network coupling be incision technology mutually: dual-ring network redundant topology structure; When a network link broke down, system can accomplish network reconfiguration automatically; Because of the audio-video system volume of transmitted data is big,, can effectively reduce the number of network node of long communication path so adopt looped network coupling tangent rings technology; Shorten communication distance; When Single Point of Faliure takes place, can have higher network performance through carrying out network self-healing than short path.
2) the high ferro audio-video system is play centralized management and the local mode that combines of playing of adopting to audio frequency and video; With the real-time of centralized system, be easy to management; Organically combine with the flexibility of local mode, low dependence, having overcome the broadcast that distributes fully and being difficult to problem synchronous and the inconvenience management.
3) video signal transmission is stable:
Because train is under the high-speed cruising state, Video Controller is far away to the video playing terminal distance, in signals transmission, disturbed easily, and this high ferro audio-video system Design of device has realized the stability of video signal transmission quality.
4) the high ferro audio-video system docks with the switching of train broadcasting system:
The a pair of passive normally opened contact that reception control through polarity will be arranged and train broadcasting system inside provide connects; Audio-video system provides multiple spot to receive design, and has all kept the consistency of receiving polarity with each broadcast reception point, realizes that the broadcast of audio-video system audio/video program docks with the instant of train broadcasting system.
Description of drawings
Fig. 1 is the framework sketch map of a kind of high ferro audio-video system of the present invention.
Fig. 2 is the framework sketch map of a kind of high ferro audio-video system device of embodiments of the invention.
Embodiment
Embodiment 1
In conjunction with shown in Figure 2, a kind of high ferro audio-video system of the present invention is used for the control and management of the input and output of video system and audio system on the high ferro.On the high ferro train, be provided with VIP compartment, first-class compartment and second coach, high ferro audio-video system then of the present invention, through following concrete structure, realize 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, carry out the management control of audio-video system through the main line Ethernet, and the transmission of data such as movie and video programs, synchronization mechanism.All establish the main line network switch that adopts the hot machine standby redundancy design of twin-core sheet in every joint compartments such as VIP compartment, first-class compartment, second coach and dining car, be connected on the main line Ethernet module with the connected mode of dual-ring network redundant topology structure.
Audio-video system main control computer and call screen are established in Machine Room in dining car, are connected on the main line network switch in this compartment, as the administrative center and the deposit data center of full train audio-video system.
The child servers A of system is used for the control and management of the audio-visual system in VIP compartment; Be connected with a child servers A of system and several audio frequency and video control boxes on the main line network switch in every joint VIP compartment: be connected single control power amplifier on the child servers A of system, single control power amplifier output only connects loud speaker; The audio frequency and video control box is located at below each VIP seat, is connected with earphone call panel and LCD touch-screen on the audio frequency and video control box, and the earphone call panel is provided with call button call function is provided;
Be installed in the loudspeaker plays broadcasting on the top board, the passenger in VIP compartment can select to listen to the radio programme or select and listen to and watch and look audio frequency through being arranged on earphone by the seat, also initiatively calls the program data in the audio-video system through the LCD touch-screen.
The child servers B of system is used for the control and management of the audio-visual system in first-class compartment; Be connected with a child servers B of system on the main line network switch in the first-class compartment of every joint: the child servers B of system goes up the two control of connection power amplifiers and is connected with the signal plate of LCD screen with several, the two connection of control power amplifier outputs several audio frequency control box and loud speakers; The audio frequency control box is located at below each first-class seat, is connected with the earphone control panel on the audio frequency control box, and the earphone control panel is provided with the selection of volume adjusting and program channel;
Be installed in the loudspeaker plays broadcasting on the top board, the passenger in first-class compartment can select to listen public's broadcasting or select shields to listen to LCD and watches video through being arranged on the other earphone listening to audio in seat.
The child servers C of system is used for the control and management of the audio-visual system of second coach; Be connected with a child servers C of system on the main line network switch in every joint second coach: be connected with single control power amplifier on the child servers C of system and be connected with the signal plate of LCD screen with several, 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, listens to the movie and video programs sound accompaniment through the loud speaker that is installed on the top board.
Through the audio-video system main control computer train is carried out centralized control, the public audio/video program that broadcasts is carried out preview, supervision, monitoring etc.The audio-video system main control computer can deposit a large amount of video frequency programs in as the program storage source; Employing has the hard disk of earthquake resistant construction as storage medium; Can realize the video system program and broadcast the automatic renewal of table through the high capacity U disc connected mode, and the setting of function keys such as realizing volume is regulated, the selection of program, fast forwarding and fast rewinding, the selection of outage play mode is arranged.
Audio-video system docks with the switching of train broadcasting system:
The a pair of passive normally opened contact that the inside of reception control and the train broadcasting system of per car through polarity will be arranged provides connects; Audio-video system provides multiple spot to receive design; And all kept the consistency of receiving polarity with each broadcasting for train acceptance point, taken into account and realize that audio-video system middle pitch video program play docks with the instant of train broadcasting system.
1) when train broadcasting system carries out the broadcasting of background music; This instruction is passed through RS485 bus notification broadcast system plays background music by the audio-video system main control computer; The source of sound of playing is MP3 or broadcast receiver program; Transfer full car loud speaker to the background music broadcast state through the total line traffic control audio-video system of train main line Ethernet simultaneously, broadcasting is switched but the seat earphone in VIP compartment and the first-class compartment does not carry out background music;
2) come temporarily as bulletin broadcasting, video pictures does not stop, and audio-video system transfers full car loud speaker to the bulletin broadcast state, comprises that all channels all transfer the bulletin broadcast state in the seat earphone in VIP compartment and the first-class compartment; Behind the bulletin off-the-air, revert to original operating state automatically.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a high ferro audio-video system is characterized in that, comprises
The main line Ethernet that runs through train;
Train divides three types compartment, and every joint is equipped with the main line network switch in the compartment, and the main line network switch is connected on the main line Ethernet with the connected mode of dual-ring network redundant topology structure;
Audio-video system main control computer and call screen all are connected on the main line network switch;
Be connected with the first system's child servers and several audio frequency and video control boxes that are used for the management and control loud speaker on the main line network switch in every joint first type compartment, be connected with single control power amplifier on first system's child servers, single control power amplifier output connects loud speaker;
Be connected with the second system's child servers that is used for management and control signal plate, audio frequency control box and loud speaker on the main line network switch in every joint second type compartment; Be connected with two control power amplifiers and several signal plates on second system's child servers, two control power amplifier outputs connect several audio frequency control box and loud speakers;
Be connected with the tertiary system system child servers that is used for management and control signal plate and loud speaker on the main line network switch in every joint the 3rd type compartment, be connected with single control power amplifier and several signal plates on the tertiary system system child servers, single control power amplifier output connects loud speaker.
2. high ferro audio-video system according to claim 1 is characterized in that, all is connected with the LCD screen on several signal plates of said second system's child servers and tertiary system system child servers.
3. high ferro audio-video system according to claim 1 is characterized in that, is connected with earphone call panel and LCD touch-screen on the said audio frequency and video control box, is connected with the earphone call panel on the audio frequency control box.
4. high ferro audio-video system according to claim 1; It is characterized in that, comprise in the said main line Ethernet module: 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.
5. high ferro audio-video system according to claim 4 is characterized in that, comprises the interface that docks train broadcasting system in the said audio and video data streams communication domain, and the passive normally opened contact inner with train broadcasting system connects.
6. according to claim 1,2,3,4 or 5 described high ferro audio-video systems; It is characterized in that; Said first system's child servers, second system's child servers and tertiary system system child servers are carried out Play Control to the program source on the equipment separately, and the video VGA signal that at first will play carries out differential coding, carries out remote transmission behind the coding; Before each terminal display screen, carrying out differential decoding, be reduced to the VGA signal and deliver to the display screen broadcast through signal plate.
7. high ferro audio-video system according to claim 1 is characterized in that, said main line network switch design adopts the hot machine backup of twin-core sheet.
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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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| CN201110440395.3A CN102523143B (en) | 2011-12-26 | 2011-12-26 | High-speed railway audio and video system |
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Cited By (3)
| 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 |
| WO2015180445A1 (en) * | 2014-05-28 | 2015-12-03 | 北车大连电力牵引研发中心有限公司 | Train network control system |
| CN112298222A (en) * | 2019-07-30 | 2021-02-02 | 株洲中车时代电气股份有限公司 | Rail vehicle and communication network thereof |
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| US20030208579A1 (en) * | 2002-05-01 | 2003-11-06 | Brady Kenneth A. | Method and system for configuration and download in a restricted architecture network |
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| CN112298222A (en) * | 2019-07-30 | 2021-02-02 | 株洲中车时代电气股份有限公司 | Rail vehicle and communication network thereof |
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| CN102523143B (en) | 2014-10-08 |
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