CN102630042A - Delivery and monitoring system for outdoor electronic information broadcast network - Google Patents
Delivery and monitoring system for outdoor electronic information broadcast network Download PDFInfo
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- CN102630042A CN102630042A CN2012100882648A CN201210088264A CN102630042A CN 102630042 A CN102630042 A CN 102630042A CN 2012100882648 A CN2012100882648 A CN 2012100882648A CN 201210088264 A CN201210088264 A CN 201210088264A CN 102630042 A CN102630042 A CN 102630042A
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Abstract
The invention discloses a delivery and monitoring system for an outdoor electronic information broadcast network, which is characterized in that a delivery broadcasting unit delivers safely video programs and program menus to a plurality of program broadcasting modules through a network; the program broadcasting modules broadcast programs in accordance with arrangement of the program menus; a monitoring return unit monitors parameters of site environment and live broadcasts, avoids faults of front end systems and equipment, and even prevents criminals from directly illegally broadcasting uncensored and unapproved content at the front end; and a signal acquiring unit can achieve the acquirement of site environmental parameters and monitoring audio and video signals in unattended situations. The system can be operated continuously, is suitable for day time, night time and various severe environments, achieves that video and audio files are delivered to a front end broadcasting node for broadcasting through the network, and monitors all broadcasting points in real time. The data transmission of the system is safe and reliable, monitoring pre-warning, processing and response are timely, extension capability of front ends is strong, and the system is suitable for centralized monitoring of the outdoor electronic information broadcast network and large-scale disposition of front end nodes.
Description
Technical field
The present invention relates to the video frequency program distributed security and deliver and supervisory control system, more specifically say so a kind of secure delivery and real-time monitoring system to outdoor LED large-screen distributed terminal.
Background technology
Along with scientific and technological progress in recent years and economic rapid development, the development and application of outdoor LED large-screen very rapidly.The LED large-screen is usually located at the numerous location, downtown area of the stream of people, and audient's face is big, and influence extensively also occurred the incident that the LED large-size screen monitors are play harmful content all over the world, and event handling speed is slower, has caused abominable social influence.In order to guarantee to play safety, existing outdoor LED large-size screen monitors are play and are still selected traditional single-point broadcast mode mostly, and this makes program updating slow, wastes time and energy.Also emerge some multiple terminals simulcasting systems at present; But coverage is little; Be difficult to satisfy the cross-region popularization of play content such as news category, live class and commercial paper, in addition, in order to guarantee the fail safe of each terminal large-screen; Usually need all arrange staff on duty in each broadcast nodes, this brings the lot of manpower and material resources input also for the O&M of system.
Summary of the invention
The present invention is for solving above-mentioned existing in prior technology weak point; Provide a kind of outdoor electronics information dissemination net to deliver and supervisory control system, in the hope of data delivery and the safety issue of broadcast and the safe early warning and the centralized monitor at front end unattended operation scene that solves distributed terminal effectively.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The outdoor electronics information dissemination of the present invention net delivers and the characteristics of supervisory control system are: include 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.
The outdoor electronics information dissemination of the present invention net delivers and the characteristics of supervisory control system also are: the delivery sending module that said delivery is broadcasted in the unit adopts the operation of Windows service form; Adopting aes algorithm to carry out video flowing encrypts; Said session interaction encryption is customizable, and the combinational algorithm that acquiescence adopts character string odd bits md5 encryption and even bit 3DES to encrypt is encrypted.
Compared with prior art, beneficial effect of the present invention is embodied in:
1, the present invention is directed to reliability of data transmission and fail safe, the double-circuit aggregation scheme through telecommunications E1 special line and the E1 of UNICOM special line are formed guarantees the safe and reliable of grid; Data adopt video flowing and session interaction encryption mechanism in network transmission process simultaneously, can effectively prevent illegal delivery, illegal intercepting and illegal data content, have guaranteed reliability of data transmission and fail safe.
2, the present invention is directed to the real time of data transmission requirement; The content of considering communication is different; Requirement to transmission delay and bandwidth safeguard, real-time is also different; Adopt the two protocol modes of binary channels, data-signals such as video frequency program and programme are transmitted with data channel, and the high signals of real-time such as user control signal, monitoring audio-video signal, site environment parameter and event handling signal transmit with the real-time channel.
3, the present invention is directed to the requirement of play content high security, the front end broadcast nodes adopts embedded device, and program can't be distorted also can not implanted other illegal softwares; Monitoring passback unit, can in time stop the program broadcast even cut off large-screen from the dynamic response warning information through safe handling mechanism, need not the professional and operates the safety that just can guarantee to broadcast on duty.
4, deliver sending module among the present invention and adopt the Windows service form, program is delivered and is accomplished automatically by the backstage, and safe, response speed is fast, the potential safety hazard of avoiding manual intervention to cause.
5, extended capability of the present invention is strong, and database and applied logic layer are user and traffic handing capacity spare interface, and software can be realized the seamless combination with original system through newly-increased module.System can be linked in the outdoor electronics information dissemination net increasing the front end broadcast nodes newly through spare interface easily.
Description of drawings
Fig. 1 is delivery of the present invention and supervisory control system basic composition block diagram;
Fig. 2 delivers the video flowing encryption flow figure that broadcasts the unit for the present invention;
Fig. 3 is session interaction encryption flow figure of the present invention;
Embodiment
Referring to Fig. 1, system of the present invention forms and comprises that the unit is broadcasted in delivery, monitoring returns 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 2008R2 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 2; 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 3 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 1, 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 1, 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.
Claims (2)
1. outdoor electronics information dissemination net is delivered and supervisory control system, it is characterized in that: include 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.
2. outdoor electronics information dissemination net according to claim 1 is delivered and supervisory control system; It is characterized in that the delivery sending module that said delivery is broadcasted in the unit adopts the operation of Windows service form; Adopting aes algorithm to carry out video flowing encrypts; Said session interaction encryption is customizable, and the combinational algorithm that acquiescence adopts character string odd bits md5 encryption and even bit 3DES to encrypt is encrypted.
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Application publication date: 20120808 |