CN102625146A - Outdoor electronic information simultaneous broadcast network system - Google Patents
Outdoor electronic information simultaneous broadcast network system Download PDFInfo
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- CN102625146A CN102625146A CN2012100883142A CN201210088314A CN102625146A CN 102625146 A CN102625146 A CN 102625146A CN 2012100883142 A CN2012100883142 A CN 2012100883142A CN 201210088314 A CN201210088314 A CN 201210088314A CN 102625146 A CN102625146 A CN 102625146A
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Abstract
The invention discloses an outdoor electronic information simultaneous broadcast network system, which is composed of a material editing unit, a video program reading and editing unit, a network live broadcast unit, a delivering and monitoring subsystem and a plurality of expendable light-emitting diode (LED) display units. The outdoor electronic information simultaneous broadcast network system integrates editing, examining and verifying, broadcasting and monitoring and is a cross-region real-time simultaneous broadcast network composed of a broadcasting center and a plurality of outdoor LED large screens. Compared with the prior art, the outdoor electronic information simultaneous broadcast network system is good in compatibility and capable of simultaneously supporting traditional finished programs, high-timeliness current date video programs and live broadcast programs, provides high-level safety guarantee and program prevention in each link and when safety problems happen, can fast respond to and timely handle the problems.
Description
Technical field
The present invention relates to a kind of radio hookup net system, the real-time outdoor electronics information dissemination net system of a kind of cross-region of more specifically saying so.
Background technology
Along with scientific and technological progress in recent years and economic rapid development, the development and application of outdoor LED large-size screen monitors very rapidly.But most at present outdoor LED large-size screen monitors systemic-functions is comparatively single, and basic every day, the program with duplicate contents such as playing advertisements, propaganda films was main.Be difficult to support ageing strong, attract spectators the to stop news category of watching, the broadcast of live type of program, cause spectators' rating enthusiasm little, even be prone to the mood that takes exception.Technically; Its main cause is that this type systematic generally only can be supported the traditional final product program; Be difficult to support effectively live signal and every day newly organized program; Can't material be obtained, link such as program making, content auditing, delivery broadcast combines closely mutually, causes that the broadcast program form is single, content is outmoded relatively.And if adopt separately independently system and network, above-mentioned link is stiff separately, can cause on the one hand then that system is difficult to ensure compatibility, consistency and the fail safe of video frequency program in each link; On the other hand, also seriously restricted the response speed of system.
Simultaneously, in view of outdoor LED large-size screen monitors many places in the business district, the broadcast content audient is wide, spectators are many, influence surface is comparatively extensive, the function such as supervision that supervises in real time to the audit of broadcast content, during broadcasting seems particularly important.A lot of outdoor LED large-size screen monitors once took place play the incident of uncomfortable content even obscene Pornograph, and the incident of generation reprocessing response is slower, causes comparatively abominable social influence.The reason that these problems occur is that fail safe is weak in the existing outdoor large-size screen monitors simulcasting system, is difficult for preventing in advance the generation of the problems referred to above, in sudden security incident the back takes place and lacks fast effectively Treatment Technology means.
Summary of the invention
The present invention is for avoiding above-mentioned existing in prior technology not enough; Providing a kind of can compatible various video originate; Comprise material video on the same day, finished product video and live video, guarantee the outdoor electronics information dissemination net system of the cross-region of high controllability, fail safe simultaneously.
For reaching above purpose, the present invention takes following technical scheme:
The characteristics of the outdoor electronics information dissemination of the present invention net system are that system forms and comprises material gather and edit unit, video frequency program editing unit, network direct broadcasting unit, delivery and Monitor And Control Subsystem and extendible a plurality of led display unit;
The said material unit of gathering and editing is used to receive the material vision signal, and record, coding and edit-modify, generate the pending trial video frequency program;
Said video frequency program editing unit is to constitute by uploading security authentication module, video frequency program storehouse server and program editing server; The said security authentication module of uploading carries out safety certification to the user, and the finished product video frequency program that user through safety certification will derive from outside the information dissemination net system is uploaded to video frequency program storehouse server; Said video frequency program storehouse server is used to store said finished product video frequency program and by the material pending trial video frequency program that the unit generates of gathering and editing, for program editing server calls; Different user right and the auditing flows of said program editing server sets; The user comes the time location information of layout video program play according to auditing flow in authority separately; Content to said time location information, pending trial video frequency program and finished product video frequency program is examined, and generates to wait to broadcast video frequency program and programme to be broadcast;
Said network direct broadcasting unit is made up of live secure verification module, live source AM access module and Streaming Media coding module; Said live secure verification module is carried out safety certification to the user; After the safety certification success; The user is linked into the Streaming Media coding module through the on-the-spot broadcasting vision signal that live source AM access module will derive from outside the information dissemination net system; And in said Streaming Media coding module, be encoded to and deliver the streaming media video data form of supporting with Monitor And Control Subsystem, generate on-the-spot broadcasting vision signal through coding;
Said delivery and Monitor And Control Subsystem are used to receive video frequency program to be broadcast from video frequency program editing unit, wait to broadcast programme and from the on-the-spot broadcasting vision signal through coding of network direct broadcasting unit; Long-rangely be delivered to said led display unit the on-the-spot broadcasting vision signal is play, and programme is long-range is delivered to said led display unit and treats and broadcast video frequency program and play according to waiting to broadcast; The real time status of while telemonitoring and controls playing; The passback of led display unit picture displayed is stored in order to having access to;
Said extendible a plurality of led display unit branches are on the different geographical, and the Long-distance Control that is used to receive said delivery and Monitor And Control Subsystem shows.
The characteristics of the outdoor electronics information dissemination of the present invention net system also are:
The said material unit of gathering and editing is to be made up of video signal receiver, material collection server and editing server; Said video signal receiver receives the material vision signal, and with the signal format that the format conversion of said material vision signal is supported for the material collection server, the signal after the transmission conversion is to the material collection server; The signal of said material collection server after to said conversion recorded, and is encoded into video frequency program; Login said editing server editor and the video frequency program of revising behind the material collection server code by the user, generate said pending trial video frequency program.
The communication network and the Internet the Internet of said radio hookup net system are isolated, and isolation method is that the VPN virtual network is isolated or physical network is isolated.
The characteristics of the outdoor electronics information dissemination of the present invention net system also are:
Said delivery and Monitor And Control Subsystem have the broadcast of delivery unit, monitoring passback unit and signal gathering unit:
It is to constitute by delivering sending module, a plurality of delivery receiver module and a plurality of playing programs module that the unit is broadcasted in said delivery;
Said delivery sending module receiving video program, programme, user control signal and from the event handling signal of said monitoring passback unit; In said delivery sending module; After said video frequency program is encrypted through video flowing; Carry out the session interaction encryption jointly with programme, user control signal and event handling signal; The video frequency program that to deliver through data channel through the two protocol modes of binary channels and the user control signal of programme and the delivery through the real-time channel and event handling signal be as delivery signals, and the double-circuit aggregation networks through telecommunications E1 special line and the E1 of UNICOM special line composition is delivered to the said receiver module of respectively delivering; Saidly respectively deliver receiver module and said each playing programs module is encapsulated in respectively in each embedded device; The said receiver module of respectively delivering sends to the front-end processing module that said monitoring returns the unit with user control signal and event handling signal simultaneously said delivery signals being deciphered and preserved the back to said playing programs module transmission beginning play signal; Said each playing programs module according to programme output video programme signal, waits for that simultaneously the troubleshooting signal from the front-end processing module of said monitoring passback unit is used to handle the abnormality of playing programs module after detecting from the beginning play signal of said delivery receiver module;
Said monitoring passback unit is to be made up of passback sending module, passback receiver module, passback processing module, passback memory module, emergency response module and front-end processing module;
Said passback sending module receives from the site environment parameter of said signal gathering unit and monitors audio-video signal, and said site environment parameter and monitoring audio-video signal are carried out sending to said passback receiver module as real-time Monitoring Data after session interaction is encrypted; Said passback receiver module carries out safety check for the real-time Monitoring Data from said passback sending module; And will be sent to the passback processing module through the real-time Monitoring Data of safety check; Said passback processing module is judged the fail safe of broadcasting video frequency program and site environment parameter automatically through real-time Monitoring Data is compared; Send the event handling signal for unusual video frequency program or site environment parameter occurring to said emergency response module, simultaneously output monitoring information and real-time monitor data put into said passback memory module; By said emergency response module the event handling signal is broadcasted the unit through said delivery and be delivered to said front-end processing module; Said front-end processing module is exported the emergency treatment signal for the event handling signal according to event level, and sends the troubleshooting signal to said playing programs module;
Said signal gathering unit is made up of transducer, data processing module, bus converter, audio-video collection module and audio frequency and video processing module;
Said transducer is used to gather the site environment parameter that comprises infrared, gate inhibition, power supply, cigarette sense, temperature and humidity; After said data processing module processing, convert the site environment parameter into passback sending module that network signal sends to said monitoring passback unit by said bus converter; Said audio-video collection module collection monitoring audio-video signal after the processing of audio frequency and video processing module, sends to the passback sending module of said monitoring passback unit.
Compared with prior art, beneficial effect of the present invention is embodied in:
1, compatible every day except comprising the traditional final product program, can also newly be recorded video frequency program and on-the-spot broadcasting program that editor generates in the compatible various video of the present invention source, efficiently solves single, the outmoded problem of present outdoor large-size screen monitors system for content.
2, material obtains from the source, editing, content auditing, the long-range links such as final outdoor broadcast, monitoring passback file that are delivered to closely combine with video frequency program in the present invention; Significantly promote video frequency program from collecting the total system response speed of final broadcast, fully ensured consistency and the compatibility of video frequency program in each link simultaneously.
3, security performance of the present invention is outstanding, is mainly reflected in these points:
The first, for live video signal; Need the user to carry out security credential,, need the user to carry out security credential through uploading security authentication module for the finished product video frequency program through live secure verification module; Have only through after the above-mentioned safety certification, these vision signals can get into system; Video program content and broadcast time the place by video frequency program editing unit strict audit is provided, thereby guaranteed the fail safe of video program content.
The second, system of the present invention supports VPN technologies and two kinds of Network Isolation modes of physical isolation, therefore from logic, the network security of safeguards system physically; Network Transmission adopts private communications protocol and encryption mechanism, can effectively prevent illegal Data transmission, illegal intercepting and altered data content, guarantees the fail safe of system data when Network Transmission.
Three, the present invention is provided with and delivers and Monitor And Control Subsystem; Through enriching perfect monitoring and exception handling; As supervise preliminary hearing in advance, urgent stop broadcast, long-range force switch machine, historical monitored picture and have access to playback etc., fail safe and the problem trackability of elevator system when program broadcasts significantly.
4, video frequency program editing unit is all flexibly customized to user right, editing flow process among the present invention, can effectively improve the efficient of program examination.
Description of drawings
Fig. 1 is outdoor electronics information dissemination net system architecture diagram among the present invention;
Fig. 2 is the auditing flow figure of video frequency program editing unit among the present invention;
Fig. 3 is the structured flowchart of delivery among the present invention with Monitor And Control Subsystem;
Fig. 4 delivers the video flowing encryption flow figure that broadcasts the unit for delivering among the present invention with Monitor And Control Subsystem;
Fig. 5 is the session interaction encryption flow figure of delivery among the present invention with Monitor And Control Subsystem;
Fig. 6 is the structured flowchart of led display unit among the present invention;
Embodiment
Referring to Fig. 1, the material unit of gathering and editing is used to receive the material vision signal, and record, coding and edit-modify, generate the pending trial video frequency program.The material unit of gathering and editing is to be made up of video signal receiver, material collection server and editing server; Video signal receiver receives the material vision signal, and with the signal format that the format conversion of material vision signal is supported for the material collection server, the signal after the transmission conversion is to the material collection server; The material collection server is recorded the signal after changing, and is encoded into video frequency program; Login editing server editor and the video frequency program of revising behind the material collection server code by the user, generate the pending trial video frequency program.
In the practical implementation, video signal receiver inserts satellite material program source on the same day, adopts the AV signaling interface to be connected with the material collection server.The video source signal form of material collection server recorded video program is S-Video, and coded format is for H.264, and resolution is 720 * 576, and frame speed was 25 frame/seconds, and file format is MPG.Video frequency program stores the video frequency program storehouse server that video frequency program is edit and reviseed the unit into from editing server, and the storage mode that is adopted is to store through IP network, and storage mode is followed the iSCSI agreement.
Referring to Fig. 1, video frequency program editing unit constitutes by uploading security authentication module, video frequency program storehouse server and program editing server; Upload security authentication module the user is carried out safety certification, the finished product video frequency program that user through safety certification will derive from outside the information dissemination net system is uploaded to video frequency program storehouse server; Video frequency program storehouse server is used to store the finished product video frequency program and by the material pending trial video frequency program that the unit generates of gathering and editing, for program editing server calls; Different user right and the auditing flows of program editing server sets; The user comes the time location information of layout video program play according to auditing flow in authority separately; Content to time location information, pending trial video frequency program and finished product video frequency program is examined, and generates to wait to broadcast video frequency program and programme to be broadcast.
In the practical implementation, upload security authentication module and be the software systems based on the B/S framework, user account information is carried out the MD5 algorithm for encryption with odd bits, and even bit carries out the 3DES algorithm for encryption, is stored in after the encryption in the MySQL database.Behind the authentication success, upload certification subsystem the video format that the user uploads is limited, have only compliance with system to set the video format that requires and allow to upload.In the present embodiment, video format requires to be WMV, AVI, MPEG, MPG, RMVB form.
In the practical implementation, program editing server-assignment system manager role and editor, responsible editor, chief editor and four kinds of roles of domestic consumer of editor-in-chief.The system manager has the authority that the user is increased, deletes, changes, looks into, and can formulate the authority with role and these roles of distributing user.Each domestic consumer exercises role's separately authority and handles the different links (referring to Fig. 2) in the auditing flow, must not go beyond one's commission to handle or replace other roles to handle, and ensures the fail safe of programme content and form with strictness.Auditing flow comprises:
(1), write column planning, submit to the chief editor and examine by the responsible editor.Audit is carried out the programme editor through promptly being handed down to editor; Audit does not remodify column planning through promptly returning to the responsible editor.
(2), the editorial staff plans according to column, the chief editor is submitted in the programme that edits examines.All programmes that audit is passed through promptly are handed down to the editorial staff and carry out whole day listing editor; Audit does not remodify programme through promptly returning to the editorial staff.
(3), the editorial staff submits to the editor-in-chief with the whole day listing of putting in order and examines.Audit is through promptly getting into content editing flow process.Audit does not remodify the whole day listing through then returning to the editorial staff.
(4), the responsible editor receives the whole day listing, arrangement waits to compile column planning, fills in the column material and compiles singly, is handed down to the editorial staff and carries out the material editing.
(5), the editorial staff submits to the responsible editor with the material of making and examines.Audit is through promptly accomplishing the making of column content, and the chief editor who submits to carries out the column content audit; Audit does not remodify material through promptly returning to the editorial staff.
(6), the chief editor examines column content, audit through and submit to the final review that the editor-in-chief carries out column content; Audit does not remodify the editor of column content through promptly returning to the responsible editor.
(7), the editor-in-chief examines column content, audit is carried out program with supervisory control system and is delivered playing task through promptly directly being submitted to deliver; Audit is not edited the editor who remodifies column content through promptly returning to.
So far, the auditing flow of video frequency program finishes.Under the situation that column is planned and the whole day listing does not change, step (1) to step (4) is not the flow process that all must handle every day, and the audit that only needs execution in step (5) to carry out concrete programme content every day to step (7) gets final product.So both can guarantee the safety of programme content, processing response speed that again can elevator system.
Referring to Fig. 1, the network direct broadcasting unit is made up of live secure verification module, live source AM access module and Streaming Media coding module; Live secure verification module is carried out safety certification to the user; After the safety certification success; The user is linked into the Streaming Media coding module through the on-the-spot broadcasting vision signal that live source AM access module will derive from outside the information dissemination net system; And in the Streaming Media coding module, be encoded to and deliver the streaming media video data form of supporting with Monitor And Control Subsystem, generate on-the-spot broadcasting vision signal through coding.
In the present embodiment, live secure verification module is an embedded device, the built-in card reader of this equipment, keyboard and memory.Reading the user through card reader holds the identity IC-card user identity is verified.Do not carry IC-card like the user, can select manually to input password through keyboard, when three bad passwords of the continuous input of user, this user account will be locked 1 hour.The user profile of preserving in the identity information of equipment through comparison user input and the memory, checking examine user identity correct after, live source AM access module is connected internal circuit and is worked.Live source AM access module adopts the higher audio-video collection device of signal to noise ratio to constitute, and is used to insert and gather the audio-video signal of input.Audio-video signal is transferred to the Streaming Media coding module and is encoded after gathering.In the present embodiment, the Streaming Media coding module is made up of image workstation, adopts Intel i5 2500K processor, and 1GB exclusively enjoys the video memory video card, can stablize the high-speed, superior of 8 road different contents video coding service that provides.Hardware performance through strengthening image workstation with accelerate, can promote the do not go the same way total quantity of live video stream of output.The stream media format of Streaming Media coding output is for H.264, and resolution is 720 * 576, and frame speed was 25 frame/seconds.
Referring to Fig. 3, delivery is formed with Monitor And Control Subsystem and is comprised delivery broadcast unit, monitors passback unit and signal gathering unit, wherein:
Delivering and broadcasting the unit is to constitute by delivering sending module, a plurality of delivery receiver module and a plurality of playing programs module;
Deliver sending module receiving video program, programme, user control signal and from the event handling signal of monitoring passback unit; In delivering sending module; After video frequency program is encrypted through video flowing; Carry out the session interaction encryption jointly with programme, user control signal and event handling signal; The video frequency program that to deliver through data channel through the two protocol modes of binary channels and the user control signal of programme and the delivery through the real-time channel and event handling signal be as delivery signals, and the double-circuit aggregation networks through telecommunications E1 special line and the E1 of UNICOM special line composition is delivered to respectively delivers receiver module; Each is delivered receiver module and is encapsulated in respectively in each embedded device with each playing programs module; Each delivers receiver module delivery signals being deciphered and preserved the back to playing programs module transmission beginning play signal, simultaneously user control signal and event handling signal is sent to the front-end processing module that monitoring returns the unit; The playing programs module will wait for that simultaneously the troubleshooting signal from the front-end processing module of monitoring the passback unit is used to handle the abnormality of playing programs module according to programme output video programme signal after detecting from the beginning play signal of delivering receiver module;
In the practical implementation, deliver sending module and adopt the operation of windows method of service, when each startup of server, move automatically; And through protection process monitoring master service; Withdraw from situation in case note abnormalities, start immediately and should serve, and with the details log; Guarantee that out of service time is the shortest, and follow-up finder withdraws from problem unusually; Send database through timing scan, initiatively connect the front end broadcast nodes and set up communication, support breakpoint transmission simultaneously, support the backstage to download, be supported in the delivery under the program resting state, also support the real-time update play content; Scanning frequency is customizable, is defaulted as 30 seconds/inferior; Sending database adopts Microsoft SQL Server 2008 R2 to ensure performance and fail safe; The double-circuit aggregation networks that data delivery adopts telecommunications E1 special line and the E1 of UNICOM special line to form also provides redundant ability for delivering network when increasing bandwidth, adopts the mode of a kind of binary channels pair agreements to guarantee the Network Transmission of high real-time signal in addition; Through the video flowing AES video frequency program of delivering is carried out encryption; Through the session interaction encryption video frequency program, programme, user control signal and event handling signal are carried out encryption, guarantee that data can be by illegal delivery, illegal intercepting and illegal; Delivering receiver module and playing programs module is deployed in the embedded playback equipment of front end; This embedded device possesses H.264 hardware decoding function; Vision signal behind the use DVI interface output decoder; Built-in 32GB internal memory and the SD card slot of comprising of equipment is through upgrading internal memory or the direct capacity that inserts SD card expansion store video programs at SD card slot;
Video flowing AES flow process is as shown in Figure 4; After the delivery sending module receives video frequency program and programme; Video frequency program is put into the frame of video buffer area; Through aes algorithm the frame of video of buffer area is carried out encryption, video frequency program and key after will encrypting according to the IP address then are delivered to front end together; The delivery receiver module receives the back and with password encrypted secret key and packet is carried out fail safe verification and deciphering, just sends the data to the playing programs module after confirming to transmit data security;
Figure is as shown in Figure 5 for the session interaction encryption flow.The session transmitting terminal sends the random number request to the session receiving terminal earlier; After meeting with a response with after the random number that receives with the combination of password and random number character string; The system password content comprises Arabic numerals, capital and small letter English alphabet and punctuation mark, and length is more than 16 and can not comprises the English word and the Chinese phonetic alphabet that encryption mechanism adopts password and the random number character string that obtains are made up; Generate irreversible encrypted characters string; Combinational algorithm is customizable, is example with the direct splicing here: the character string odd bits is carried out the MD5 algorithm for encryption, and even bit carries out the 3DES algorithm for encryption; The session receiving terminal receives that comparison encrypted result character string comes to the same thing with local cipher behind the encrypted characters string, and the Key that generates this session is to the session transmitting terminal; The session transmitting terminal is set up the transfer of data communication after receiving session Key and transfer of data response, begins the content and the session Key of session are transferred to the session receiving terminal, and session Key guarantees mutual correctness as a label symbol; Session receiving terminal comparison current sessions Key, correct back receives session content and returns.
Shown in Figure 5, monitoring passback unit is to be made up of passback sending module, passback receiver module, passback processing module, passback memory module, emergency response module and front-end processing module;
The passback sending module receives from the site environment parameter of signal gathering unit and monitors audio-video signal, and site environment parameter and monitoring audio-video signal are carried out sending to the passback receiver module as real-time Monitoring Data after session interaction is encrypted; The passback receiver module is for carrying out safety check from the real-time Monitoring Data of passback sending module; And will be sent to the passback processing module through the real-time Monitoring Data of safety check; The passback processing module is judged the fail safe of broadcasting video frequency program and site environment parameter automatically through real-time Monitoring Data is compared; Send the event handling signal for unusual video frequency program or site environment parameter occurring to the emergency response module, simultaneously output monitoring information and real-time monitor data put into the passback memory module; By the emergency response module event handling signal is delivered to the front-end processing module through delivering the broadcast unit; The front-end processing module is exported the emergency treatment signal for the event handling signal according to event level, and sends the troubleshooting signal to the playing programs module;
In the practical implementation, the passback sending module receives from the site environment parameter of bus converter with from the monitoring audio-video signal of audio frequency and video processing module, encrypts after the double-circuit aggregation networks sends to the passback sending module through session interaction; The passback receiver module is accomplished the reception of real-time monitor data and the decoding of audio frequency and video, and site environment parameter and decoded audio-video document are sent to the passback processing module; The passback processing module returns to Surveillance center with monitor messages such as audio-video monitoring content, site environment parameter, warning information, will return the storage of data and being saved in the data storage cell of delivery data simultaneously; The realization of monitoring content fail safe is to compare with local storage audio-video document through returning audio-video document; Provide warning information immediately in case note abnormalities; Simultaneously trigger corresponding controlling mechanism according to different warning information; Warning information is three grades: send the troubleshooting signal and inform the monitor staff from trend emergency response module for the general device abnormal conditions; Unusually inform the monitor staff through modes such as video monitoring, acousto-optic, notes for the unattended operation scene, then send the emergency treatment signal and inform the monitor staff for front end play content abnormal conditions; In order to realize that monitoring history has access to and functions such as parameter history curve analysis; The passback memory module is preserved the data of passback; Utilize IP SAN technology to realize data computing, integration and storage, preserving delivery data simultaneously also is in order to guarantee to return the consistency of monitor data and delivering content; The emergency response module provides control signal according to different alarm levels; Automatically accomplish processing by the front-end processing module to warning information; Control signal to front end has two kinds: emergency treatment signal and troubleshooting signal; The emergency treatment signal is meant and detects the front end play content when unusual, provides the large-screen shutoff signal immediately, guarantees that discomfort even illegal contents can not broadcasted by large-screen; And the troubleshooting signal for example is meant when the front end playback equipment can't respond, and carries out the on-the-spot equipment of unattended operation through modes such as remote reset playback equipments and recovers.
Shown in Figure 5, signal gathering unit is made up of transducer, data processing module, bus converter, audio-video collection module and audio frequency and video processing module;
Transducer is used to gather the site environment parameter that comprises infrared, gate inhibition, power supply, cigarette sense, temperature and humidity; After the data processing module processing, convert the site environment parameter into passback sending module that network signal sends to monitoring passback unit by bus converter; Audio-video collection module collection monitoring audio-video signal after the processing of audio frequency and video processing module, sends to the passback sending module of monitoring passback unit.
In the practical implementation, place a DVR of supporting the input of four road videos in each far-end broadcast nodes, according to the transmission bandwidth condition, four road D1 real-time play states of gathering pass back to Surveillance center.Four road video acquisition signals comprise: the real-time output of first via video input playback terminal is used for the real-time audit to the playback terminal broadcast content; The input of the second road video is installed on the wide-angle rifle formula video camera of large-size screen monitors front end, is used for the real-time audit to the actual broadcast of large-size screen monitors effect; Third Road video input is installed on large-size screen monitors control cubicle or the outside rifle formula video camera of control machine room, and warning function is provided simultaneously, prevents that other people from deliberately destroying or the normal broadcast of illegally interference playing device; The four road video input is installed on the intelligent camera of the outside correct position of large-size screen monitors, is used to check and adds up large-size screen monitors front end state and program viewing situation.Broadcast normal but the unusual situation of audio frequency for fear of video occurring simultaneously, system also gathers the audio signal that large-screen broadcasts, and accomplishes the collection of audio signal through the configuration audio encoding chip; In order to guarantee allocated bandwidth, the audio frequency and video processing module is used H.264 efficient video coding technique, sets up perfect allocation table and code check code stream simultaneously, for the not high monitoring of level of security, can reduce the frame number of per second passback with passback from customization.Site environment parameter such as sensor acquisition is infrared, gate inhibition, power supply, cigarette sense, temperature, humidity also provides extendible sensor interface, after data processing module mould/number conversion, converts the RS485 bus signals into ethernet signal by bus converter.
Referring to Fig. 6, extendible a plurality of led display unit branches are on the different geographical, are used to receive the Long-distance Control of delivering with Monitor And Control Subsystem and show.Each led display unit is made up of the transmission card (as shown in Figure 3) that links to each other successively, multifunction card, environmental monitor, receiving card, LED display curtain.Wherein send card and delivery and Monitor And Control Subsystem and use USB to be connected, USB interface transmission of control signals wherein, DVI interface transmission video signal with the DVI interface.Send and send to receiving card after card is encrypted video program data, video programming signal is play at the LED display curtain via receiving card deciphering back and is shown.Send card, receiving card is connected through netting twine with environmental monitor and transmit data.Multifunction card is used to realize the switching on and shutting down of LED display curtain, supports manually and automatic control switch machine dual mode.Environmental monitor comprises Temperature Humidity Sensor and illuminance transducer, is used to monitor LED screen periphery humiture and illuminance information.In the practical implementation, multifunction card is provided with LED display curtain 9:00AM every day start, the 22:00PM shutdown.Smart brightness is regulated through illuminance transducer and is gathered ambient brightness, according to the threshold decision of system's setting and adjust the display screen intrinsic brilliance; When ambient brightness was less than or equal to 12000lx, it was 60% that screen intensity is set, and ambient brightness is during greater than 12000lx, and it is 80% that screen intensity is set.Intelligent temperature is regulated through temperature sensor and is gathered environment temperature, also adjusts based on the threshold decision of system's setting the display screen intrinsic brilliance is set.When ambient temperature more than or equal to 50 degrees centigrade, but during less than 65 degrees centigrade, the facility screen intensity is 50%; When ambient temperature more than or equal to 65 degrees centigrade, the automatic powered-down of display screen.
Claims (4)
1. outdoor electronics information dissemination net system is characterized in that system forms and comprises material gather and edit unit, video frequency program editing unit, network direct broadcasting unit, delivery and Monitor And Control Subsystem and extendible a plurality of led display unit;
The said material unit of gathering and editing is used to receive the material vision signal, and record, coding and edit-modify, generate the pending trial video frequency program;
Said video frequency program editing unit is to constitute by uploading security authentication module, video frequency program storehouse server and program editing server; The said security authentication module of uploading carries out safety certification to the user, and the finished product video frequency program that user through safety certification will derive from outside the information dissemination net system is uploaded to video frequency program storehouse server; Said video frequency program storehouse server is used to store said finished product video frequency program and by the material pending trial video frequency program that the unit generates of gathering and editing, for program editing server calls; Different user right and the auditing flows of said program editing server sets; The user comes the time location information of layout video program play according to auditing flow in authority separately; Content to said time location information, pending trial video frequency program and finished product video frequency program is examined, and generates to wait to broadcast video frequency program and programme to be broadcast;
Said network direct broadcasting unit is made up of live secure verification module, live source AM access module and Streaming Media coding module; Said live secure verification module is carried out safety certification to the user; After the safety certification success; The user is linked into the Streaming Media coding module through the on-the-spot broadcasting vision signal that live source AM access module will derive from outside the information dissemination net system; And in said Streaming Media coding module, be encoded to and deliver the streaming media video data form of supporting with Monitor And Control Subsystem, generate on-the-spot broadcasting vision signal through coding;
Said delivery and Monitor And Control Subsystem are used to receive video frequency program to be broadcast from video frequency program editing unit, wait to broadcast programme and from the on-the-spot broadcasting vision signal through coding of network direct broadcasting unit; Long-rangely be delivered to said led display unit the on-the-spot broadcasting vision signal is play, and programme is long-range is delivered to said led display unit and treats and broadcast video frequency program and play according to waiting to broadcast; The real time status of while telemonitoring and controls playing; The passback of led display unit picture displayed is stored in order to having access to;
Said extendible a plurality of led display unit branches are on the different geographical, and the Long-distance Control that is used to receive said delivery and Monitor And Control Subsystem shows.
2. outdoor electronics information dissemination net according to claim 1 system is characterized in that, the said material unit of gathering and editing is to be made up of video signal receiver, material collection server and editing server; Said video signal receiver receives the material vision signal, and with the signal format that the format conversion of said material vision signal is supported for the material collection server, the signal after the transmission conversion is to the material collection server; The signal of said material collection server after to said conversion recorded, and is encoded into video frequency program; Login said editing server editor and the video frequency program of revising behind the material collection server code by the user, generate said pending trial video frequency program.
3. outdoor electronics information dissemination net according to claim 1 system is characterized in that, the communication network and the Internet the Internet of said radio hookup net system are isolated, and isolation method is that the VPN virtual network is isolated or physical network is isolated.
4. outdoor electronics information dissemination net according to claim 1 system is characterized in that, said delivery and Monitor And Control Subsystem have to deliver and broadcast unit, monitoring passback unit and signal gathering unit:
It is to constitute by delivering sending module, a plurality of delivery receiver module and a plurality of playing programs module that the unit is broadcasted in said delivery;
Said delivery sending module receiving video program, programme, user control signal and from the event handling signal of said monitoring passback unit; In said delivery sending module; After said video frequency program is encrypted through video flowing; Carry out the session interaction encryption jointly with programme, user control signal and event handling signal; The video frequency program that to deliver through data channel through the two protocol modes of binary channels and the user control signal of programme and the delivery through the real-time channel and event handling signal be as delivery signals, and the double-circuit aggregation networks through telecommunications E1 special line and the E1 of UNICOM special line composition is delivered to the said receiver module of respectively delivering; Saidly respectively deliver receiver module and said each playing programs module is encapsulated in respectively in each embedded device; The said receiver module of respectively delivering sends to the front-end processing module that said monitoring returns the unit with user control signal and event handling signal simultaneously said delivery signals being deciphered and preserved the back to said playing programs module transmission beginning play signal; Said each playing programs module according to programme output video programme signal, waits for that simultaneously the troubleshooting signal from the front-end processing module of said monitoring passback unit is used to handle the abnormality of playing programs module after detecting from the beginning play signal of said delivery receiver module;
Said monitoring passback unit is to be made up of passback sending module, passback receiver module, passback processing module, passback memory module, emergency response module and front-end processing module;
Said passback sending module receives from the site environment parameter of said signal gathering unit and monitors audio-video signal, and said site environment parameter and monitoring audio-video signal are carried out sending to said passback receiver module as real-time Monitoring Data after session interaction is encrypted; Said passback receiver module carries out safety check for the real-time Monitoring Data from said passback sending module; And will be sent to the passback processing module through the real-time Monitoring Data of safety check; Said passback processing module is judged the fail safe of broadcasting video frequency program and site environment parameter automatically through real-time Monitoring Data is compared; Send the event handling signal for unusual video frequency program or site environment parameter occurring to said emergency response module, simultaneously output monitoring information and real-time monitor data put into said passback memory module; By said emergency response module the event handling signal is broadcasted the unit through said delivery and be delivered to said front-end processing module; Said front-end processing module is exported the emergency treatment signal for the event handling signal according to event level, and sends the troubleshooting signal to said playing programs module;
Said signal gathering unit is made up of transducer, data processing module, bus converter, audio-video collection module and audio frequency and video processing module;
Said transducer is used to gather the site environment parameter that comprises infrared, gate inhibition, power supply, cigarette sense, temperature and humidity; After said data processing module processing, convert the site environment parameter into passback sending module that network signal sends to said monitoring passback unit by said bus converter; Said audio-video collection module collection monitoring audio-video signal after the processing of audio frequency and video processing module, sends to the passback sending module of said monitoring passback unit.
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