CN104079898A - Passenger train satellite television receiving device - Google Patents
Passenger train satellite television receiving device Download PDFInfo
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- CN104079898A CN104079898A CN201410331898.0A CN201410331898A CN104079898A CN 104079898 A CN104079898 A CN 104079898A CN 201410331898 A CN201410331898 A CN 201410331898A CN 104079898 A CN104079898 A CN 104079898A
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Abstract
The invention discloses a passenger train satellite television receiving device. The passenger train satellite television receiving device comprises a train satellite antenna, a satellite antenna control module, a descrambling module, a transcoding module and a flow push module, wherein the satellite antenna control module is used for positioning a train in real time and collecting the running speed, and calling corresponding control information according to information changes so as to achieve control over automatic adjustment of the position of the train satellite antenna, the descrambling module is used for descrambling satellite television signals, outputting satellite television signals with the live stream signal format while decoding the satellite television signals, and providing video IP signals, the transcoding module is used for converting the signals into program information with the signal format required by playing of user terminals, and the flow push module provides background operation services for video-on-demand operation of the user terminals. According to the passenger train satellite television receiving device, a train can normally work in a high-speed running environment or an environment with high electromagnetic interference, receiving, descrambling, transcoding and flow push are carried out after real-time adjustment on and control over the position and the parameters of a satellite antenna, and the requirement of the passenger train for playing real-time television programs through different terminals and the video-on-demand requirement are met.
Description
Technical field
The present invention relates to satellite TV receiver, specifically relate to a kind of passenger train satellite TV receiver.
Background technology
Satellite television is ripe application in radio data system, but does not also apply in the lower domestic of locomotive high-speed cruising and strong vibration and strong electromagnetic interference environment.Application difficulty in passenger train mainly concentrates on the stable seizure of satellite-signal under train high-speed cruising, the reliability and stability of satellite antenna and satellite TV receiver under sustained vibration, the interference of the strong electromagnetic interference environment that locomotive power supply 25KV and the work of Electric equipment produce to satellite-signal, the transmission of blocking network signal between impact on signal and train of densely covered electric pole etc.
Simultaneously direct satellite television broadcasing program is play and be can be passenger and provide good experience during the journey very long in the passenger train of operation, therefore the satellite antenna of its use, satellite television information processor must meet the device entrucking requirement of railroad train, the stability with signals such as high reliability, installation property and signal reception, decoding, plug-flows, this just need to develop special passenger train satellite TV receiver and adapt to the user demand that the satellite in high-speed cruising is followed the tracks of fast for the feature of railroad train operation.
Summary of the invention
In view of the defect that prior art exists, the object of the invention is to provide a kind of passenger train satellite TV receiver, apply to for solving prior art the problem that the passenger under high-speed cruising, vibration, complex environment watches real-time satellite television programming.
To achieve these goals, technical scheme of the present invention:
Passenger train satellite TV receiver, comprises train satellite antenna, it is characterized in that:
Also comprise for locating in real time current train position and gathering current train running speed, according to above-mentioned positional information and speed parameter situation of change, call corresponding control information to realize the satellite antenna control module of controlling train satellite antenna and adjust to suitable satellite signal receiving position;
Satellite TV signal for the satellite antenna transmission to receiving carries out descrambling, output is applicable to the satellite TV signal of the live TV stream signal format of train-installed TV output and the satellite TV signal of the satellite antenna transmission receiving is encoded simultaneously, for transcoding module provides the video IP descrambling module of signal;
For receiving satellite TV signal and the video IP signal of the live TV stream signal format that descrambling module provides, the matchmaker's fluid agreement arranging according to inside converts above-mentioned signal to the transcoding module of the programme information that is applicable to the signal format that each user terminal plays;
And for receiving the programme information of transcoding module converts, and for carrying out program request operation, each user terminal provides the plug-flow module of consistency operation service.
Further, described satellite antenna control module comprises the GPS location navigation submodule of locating current train position and gathering current train running speed for real-time; The control information database that internal preset is corresponding with train position information and speed parameter running parameter, and export the FPGA flush bonding processor of corresponding control information and for the servomotor action according to the connected satellite antenna of control information control of FPGA flush bonding processor output, adjust to the satellite antenna SERVO CONTROL submodule of suitable satellite signal receiving position to realize control train satellite antenna according to parameter current situation of change.
Described satellite antenna control module also comprises the signal parameter adjustment submodule of adjusting satellite TV signal reception parameter for controlling satellite antenna.
Between described descrambling module, transcoding module, plug-flow module, carry out the transmission of signal data by coaxial industry ethernet.
Described passenger train satellite TV receiver also comprises with the power supply of train inside and being connected, and is used to this device that the power module of power supply is provided.
The modules that described passenger train satellite TV receiver comprises is flush bonding processor.
Further, coaxial industry ethernet interface adopts D89 joint, and power module interface adopts M12 Aviation Connector.
The main purpose of design of this device is to solve vibration under train high-speed cruising environment and the problem of strong electromagnetic interference environment lower device cisco unity malfunction, by to after the real-time adjustment control of satellite antenna position, parameter etc., TV signal receives descrambling, transcoding, plug-flow, meet broadcasting and the program request demand of the real-time television program of passenger train under different terminals.
Concrete design principle, satellite tv antenna control module, its main control module adopts FPGA processor, by GPS location navigation submodule, locomotive is carried out the collection of GPS locomotive position location and the speed of service, in FPGA flush bonding processor, establish database and be convenient to control in real time satellite antenna SERVO CONTROL submodule control train satellite antenna and adjust to suitable satellite signal receiving position, improve signal receiving efficiency; The signal parameter adjustment submodule of being convenient to adjust antenna satellite TV signal reception parameter is set simultaneously, reception carrier frequency to be set, uplink and downlink frequency, the signal parameters such as polarization mode.
Descrambling module, adopts flush bonding processor, realizes satellite television reception signal and carries out descrambling, output meets the TS stream of the H.264 form that vehicle-mounted Internet Protocol Television watches, for play-overing of Internet Protocol Television program, meanwhile, be also provided as the video IP signal output of transcoding, plug-flow module service.
Transcoding module, adopt flush bonding processor, receive descrambling module output video IP signal and live TV stream, provide the at present stream media protocol of popular terminal through converting all kinds of video signals such as being used to DTV (radio and television), OTT (internet television), IPTV, Mobile TV (mobile TV), VOD to, comprise many compressed format, many packing manner and multiresolution etc. and for corresponding coding processing.
Plug-flow module, adopt flush bonding processor to be mainly used in as each client provides consistency operation management, as the content acquisition of satellite television programming, Content Management, content arrangement, content revealing and support multiple live and program request concurrent users to watch with program request satellite TV etc. simultaneously.
This device adopts multi-embedding formula processor simultaneously, and the modularized design of multiple bus architecture, to meet the requirement of train to equipment size; Crust of the device can be set to reliable ground, and to ensure the reliability service under electromagnetic interference environment, power supply interface adopts M12 aviation head, coaxial industry ethernet interface to adopt DB9 joint, to ensure the reliability service under high-speed cruising and the vibration environment of equipment; Can adopt the fan-free structural design of all-in-onecase heat radiation to ensure the reliable of vibrational state operation.
In sum, compared with prior art, beneficial effect of the present invention:
Passenger train satellite TV receiver provided by the invention, this device adopts Highgrade integration, miniaturization, multi-embedding formula processor and interface Design of Reinforcement, consider the technical barrier moving under high-speed cruising train and complex environment, it is that GPS follows the tracks of servo-actuated control unit group (GPS location navigation submodule that satellite antenna control adopts integrated passenger train satellite TV receiver antenna control module, FPGA flush bonding processor, satellite antenna SERVO CONTROL submodule and signal parameter are adjusted submodule), this device adopts modularization, embedded multiprocessor, firmly Interface design, reliable ground design and fan-free design, thereby guarantee the fail safe of this device, stability, reliability, make it can meet railway passenger train steady operation, for passenger provides real-time satellite TV programme.
Brief description of the drawings
Fig. 1 is the structured flowchart of passenger train satellite TV receiver of the present invention;
Fig. 2 is the satellite antenna control module structured flowchart of passenger train satellite TV receiver of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in fig. 1, passenger train satellite TV receiver of the present invention is that satellite antenna control module, descrambling module, transcoding module, plug-flow module are integrated in an equipment by inner industry ethernet, each module can adopt the full case radiation design of fan-free, and its interface adopts vibration resistance and the reliability of operation of the Interface design assurance device of DB9 or aviation head.
As Fig. 2, first the primary processor of satellite antenna control module adopts FPGA flush bonding processor, utilize GPS positioning navigation module, can Real-time Collection locomotive position and velocity information, calculate also connecting inner database through real time high-speed and provide corresponding control information, satellite antenna SERVO CONTROL submodule according to the connected satellite antenna servomotor of above-mentioned control information control along with train position changes, automatically adjust the angle of pitch and the orientation angle of antenna, reach best satellite model receiving position, adjust to the control of suitable satellite signal receiving position to realize control train satellite antenna, synchronous signal parameter adjustment submodule be convenient to user adjust satellite TV signal receive parameter.
The satellite-signal receiving transfers to descrambling module by inner coaxial bus, the primary processor of descrambling module is the PowerPc flush bonding processor of low-power consumption, module adopts the modularized design of card insertion type structure, comprises satellite reception board and satellite television specialized signal descrambling board.Vision signal is carried out to MPEG-2 coding, digital MPEG-2 coding, simulation MPEG-2 audio coding, digital MPEG-2 audio coding, the clear coding of absolute altitude etc. H.264, can push the H.264TS stream that meets customize standard to Internet Protocol Television, vehicle-mounted Internet Protocol Television can directly pass through gigabit Ethernet TV reception simultaneously.
Carry out the vision signal of signal descrambling and coding through descrambling module, directly be transferred to transcoding module by inner industry ethernet, transcoding module adopts ARM flush bonding processor, by the TV signal information source receiving in real time, the video and audio content source of live TV stream, be converted to and be applicable to DTV, mobile phone, the Internet, IPTV, the form of the terminal plays such as VOD, by hardware-accelerated, (resolution can be 720P to convert the clear program stream real-time transcoding output of some road signs transcoding to, D1, CIF, QCIF, QVGA, exportable VBR, CBR, tri-kinds of code checks of ABR) can export by the programming support code time delay that circulate simultaneously, realize previewing programs after transcoding, station caption subtitle stack, hide mark, the processing such as black surround processing.
Transcoding module by satellite TV signal be transcoded into be applicable to various device play satellite programming information after by bus transfer to plug-flow module, plug-flow module can adopt the hardware configuration consistent with signal transcoding module, watch program in order to realize multiple live and program request concurrent users simultaneously, the memory size of module can be carried out to dilatation, and build based on cloud, network bandwidth output by TV signal in gigabit, by video with RTMP, RTSP/RTP, MPEG-TS, HLS, HDS and Smooth Streaming form are published to TV simultaneously, cell phone, mobile Pad, the various ways platforms such as the Internet, output corresponding signal stream format etc.
The present invention is the receiving system of antenna, satellite antenna control module, descrambling module, transcoding module and plug-flow module composition via satellite, realize reliable reception and the final signal of exporting for various terminal equipment code checks of meeting of user of satellite TV signal, by being arranged in the WiFi of locomotive, realize in the reception of the satellite television programmings such as in-car TV, notebook computer, mobile phone, IPad and watch.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; any be familiar with those skilled in the art the present invention disclose technical scope in; be equal to replacement or changed according to technical scheme of the present invention and inventive concept thereof, within all should being encompassed in protection scope of the present invention.
Claims (8)
1. passenger train satellite TV receiver, comprises train satellite antenna, it is characterized in that:
Also comprise for locating in real time current train position and gathering current train running speed, according to above-mentioned positional information and speed parameter situation of change, call corresponding control information to realize the satellite antenna control module of controlling train satellite antenna and adjust to suitable satellite signal receiving position;
Satellite TV signal for the satellite antenna transmission to receiving carries out descrambling, output is applicable to the satellite TV signal of the live TV stream signal format of train-installed TV output and the satellite TV signal of the satellite antenna transmission receiving is encoded simultaneously, for transcoding module provides the video IP descrambling module of signal;
For receiving satellite TV signal and the video IP signal of the live TV stream signal format that descrambling module provides, the matchmaker's fluid agreement arranging according to inside converts above-mentioned signal to the transcoding module of the programme information that is applicable to the signal format that each user terminal plays;
And for receiving the programme information of transcoding module converts, and for carrying out program request operation, each user terminal provides the plug-flow module of consistency operation service.
2. passenger train satellite TV receiver according to claim 1, is characterized in that: described satellite antenna control module comprises the GPS location navigation submodule of locating current train position and gathering current train running speed for real-time; The control information database that internal preset is corresponding with train position information and speed parameter running parameter, and export the FPGA flush bonding processor of corresponding control information and for the servomotor action according to the connected satellite antenna of control information control of FPGA flush bonding processor output, adjust to the satellite antenna SERVO CONTROL submodule of suitable satellite signal receiving position to realize control train satellite antenna according to parameter current situation of change.
3. passenger train satellite TV receiver according to claim 2, is characterized in that: described satellite antenna control module also comprises the signal parameter adjustment submodule of adjusting satellite TV signal reception parameter for controlling satellite antenna.
4. passenger train satellite TV receiver according to claim 1, is characterized in that: between described descrambling module, transcoding module, plug-flow module, carry out the transmission of signal data by coaxial industry ethernet.
5. passenger train satellite TV receiver according to claim 4, is characterized in that: described coaxial industry ethernet interface adopts D89 joint.
6. passenger train satellite TV receiver according to claim 1, is characterized in that: described passenger train satellite TV receiver also comprises with the power supply of train inside and being connected, and is used to this device that the power module of power supply is provided.
7. passenger train satellite TV receiver according to claim 6, is characterized in that: described power module interface adopts M12 Aviation Connector.
8. passenger train satellite TV receiver according to claim 1, is characterized in that: the modules that described passenger train satellite TV receiver comprises is flush bonding module design.
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| CN201410331898.0A CN104079898A (en) | 2014-07-11 | 2014-07-11 | Passenger train satellite television receiving device |
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| CN201410331898.0A CN104079898A (en) | 2014-07-11 | 2014-07-11 | Passenger train satellite television receiving device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104394448A (en) * | 2014-12-11 | 2015-03-04 | 成都新光微波工程有限责任公司 | Self-adapting vehicle-mounted digital television receiver |
| CN104639918A (en) * | 2015-02-04 | 2015-05-20 | 广东欧珀移动通信有限公司 | Method and system for watching satellite television on mobile terminal |
| CN105282579A (en) * | 2015-11-13 | 2016-01-27 | 浙江中星光电子科技有限公司 | Vehicle-mounted video-on-demand method, device and system |
| CN106170098A (en) * | 2016-08-26 | 2016-11-30 | 山东天海科技股份有限公司 | Big Dipper car networking satellite television transmission system |
| CN107277090A (en) * | 2016-04-07 | 2017-10-20 | 航迅信息技术有限公司 | A kind of airborne passenger entertainment data transmission system and method |
| CN107277560A (en) * | 2016-04-07 | 2017-10-20 | 航迅信息技术有限公司 | A kind of satellite television play system and method |
| CN108769370A (en) * | 2018-04-23 | 2018-11-06 | Oppo广东移动通信有限公司 | Method of controlling antenna and Related product |
| CN109561332A (en) * | 2018-12-14 | 2019-04-02 | 广州易而达科技股份有限公司 | A kind of System and method for of satellite TV reception and switch satellite signal |
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| CN108769370B (en) * | 2018-04-23 | 2019-10-25 | Oppo广东移动通信有限公司 | Method of controlling antenna and Related product |
| CN109561332A (en) * | 2018-12-14 | 2019-04-02 | 广州易而达科技股份有限公司 | A kind of System and method for of satellite TV reception and switch satellite signal |
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