CN204465549U - Based on the emergency broadcase system of DTMB - Google Patents
Based on the emergency broadcase system of DTMB Download PDFInfo
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- CN204465549U CN204465549U CN201520163557.7U CN201520163557U CN204465549U CN 204465549 U CN204465549 U CN 204465549U CN 201520163557 U CN201520163557 U CN 201520163557U CN 204465549 U CN204465549 U CN 204465549U
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Abstract
The utility model relates to art communication systems field, especially a kind of emergency broadcase system based on DTMB, comprise signal source, audio frequency dynamic allocator, audio coder, emergent broadcast server, TS flows multiplexer, DTMB encoder and digital TV transmitter, signal source is connected to audio frequency dynamic allocator, audio frequency dynamic allocator by audio transmission to audio coder, audio frequency dynamic allocator and emergent broadcast server, data between audio coder and emergent broadcast server are transmitted mutually by data wire, transfer of data after audio coder process flows multiplexer to TS, data after TS flows multiplexer process are sent to DTMB encoder by data wire, then data are launched by data television transmitter.Native system achieves county and each small towns of subordinate, three grades, village and broadcasts, broadcast system " integration ", has taken into account the actual needs of emergent broadcast at different levels, native system is stable, practical, long-acting, safety, input be low, covered high.
Description
Technical field
The utility model relates to art communication systems field, especially a kind of emergency broadcase system based on DTMB.
Background technology
According to country about the requirement of structure system of public cultural services, the new village broadcast of building adaptation new situations is imperative.Build emergent intelligent addressing broadcast system for cultural civilian-oriented project of building a harmonious society, advance, building a New Socialist Countryside, serve vast farmers masses tool better and be of great significance.Traditional broadcast system solution only can accomplish addressable broadcast, and do not reach emergent high standard requirement, intelligence degree is also inadequate.As taking emergency advance warning as the broadcast system demand fulfillment of main purpose and reaching following object.That is: build city, township's flood control, combat a natural disaster, urgent maneuvering platform, issue disaster and accident early warning information; Relay central authorities, province, city, the multistage People's Broadcasting Station program in county, issue small towns, village's news messages; Hold county to township, county to village, township's three grades of broadcast conferences to village; Prosperity Rural Culture market, plays the thing that peasant is loved by all; Set up permanent culture, science and technology, the new platform of education program under which officials, doctors, scientist and college students go to the countryside to spread scientific and literacy knowledge; Set up the scientific and technological information transmission new channels such as cultivation, plantation fast, universal agriculture section knowledge.Meeting an urgent need for current villages and towns in rural areas, safety-command means are backward, reaction speed is slow, inefficient present situation, proposing with district is a system unit, adopt intelligently encoding Broadcast Control technology, based on wireless transmission, the means such as combining wireless terrestrial DTV and FM broadcasting transmission, realize district, small towns, the controlled broadcast in three grades, village, set up the villages and towns in rural areas emergency broadcase system of complete set.
According to user's actual conditions, intend selecting village of the digital village sound/emergency broadcase system mode based on GB terrestrial digital TV network system (DTMB) to realize village of village, citywide and ring and emergency broadcase system construction.
Utility model content
In order to overcome existing deficiency, the utility model provides a kind of emergency broadcase system based on DTMB.
The utility model solves the technical scheme that its technical problem adopts: a kind of emergency broadcase system based on DTMB, comprise signal source, audio frequency dynamic allocator, audio coder, emergent broadcast server, TS flows multiplexer, DTMB encoder and digital TV transmitter, signal source is connected to audio frequency dynamic allocator, described audio frequency dynamic allocator by audio transmission to audio coder, described audio frequency dynamic allocator and emergent broadcast server, data between audio coder and emergent broadcast server are transmitted mutually by data wire, transfer of data after described audio coder process flows multiplexer to TS, data after described TS flows multiplexer process are sent to DTMB encoder by data wire, then data are launched by data television transmitter.
According to another embodiment of the present utility model, comprise TS further and flow multiplexer received television program TS stream.
According to another embodiment of the present utility model, comprise that signal source comprises satellite-signal, district's level signal, city-level signal, flag level signal, phone is emergent, note emergent and computer client further.
The beneficial effects of the utility model are, native system achieves county and each small towns of subordinate, three grades, village and broadcasts, broadcast system " integration ", taken into account the actual needs of emergent broadcast at different levels, native system is stable, practical, long-acting, safety, input be low, covered high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
Embodiment
If Fig. 1 is structural representation of the present utility model, a kind of emergency broadcase system based on DTMB, comprise signal source, audio frequency dynamic allocator, audio coder, emergent broadcast server, TS flows multiplexer, DTMB encoder and digital TV transmitter, it is characterized in that, described signal source is connected to audio frequency dynamic allocator, described audio frequency dynamic allocator by audio transmission to audio coder, described audio frequency dynamic allocator and emergent broadcast server, data between audio coder and emergent broadcast server are transmitted mutually by data wire, transfer of data after described audio coder process flows multiplexer to TS, data after described TS flows multiplexer process are sent to DTMB encoder by data wire, then data are launched by data television transmitter, TS flows multiplexer received television program TS stream, signal source comprises satellite-signal, district's level signal, city-level signal, flag level signal, phone is met an urgent need, note is met an urgent need and computer client.
Ground digital TV transmission system, broadcast fail safe is high, and strick precaution rogue attacks ability is strong.According to the specification of ground wireless digital TV-set transmission, a simulated television passage, can transmit the data traffic of more than 20 megabits usually, generally transmits 8 cover Standard Definition Television programs.Native system mainly utilizes terrestrial DTV flat pad, and by audio signal and control signal digitlization, broadcast audio carries out multiplexing through MPEG-2 coding with digital television program TS stream, after DTMB coded modulation, launches.Its main feature make use of existing transmitting apparatus, reduction of income investment, and transmitting procedure digitlization, improves the safety and reliability of broadcast simultaneously.
Monophonic audio broadcast can compressed encoding to 64Kbps, if distribution 4Mbps bandwidth is to emergent broadcast, then can transmit 48 road audio frequency and corresponding control information.
At present, in administrative areas at the county level of China territory, the small towns in every county arranges average out to 20; The administrative village average out in each small towns 15.Calculate in administrative areas at the county level territory by this and be generally no more than 300 administrative villages.If an emergent broadcast passage is distributed in every administrative village, be then difficult in front end at county level realize.
Calculate according to the voice-grade channel number that may provide, the whole county is at village level emergent, can support 48 villages simultaneously.If there is the case of emergency more than 48 villages, that is exactly the case of emergency of general character within the scope of the whole county, can open the emergent broadcast in the whole county or full township, still can support.
In order to ensure generally, each village can use and emergent broadcast function, 300 townshiies and village, shares 48 voice-grade channels, can not fixed allocation voice-grade channel, needs the voice-grade channel that dynamic assignment takies.
Concrete management and distribution method are: by the phone of all for whole county township level responding agencies or individual, input system.When phone incoming call, control system is searched database and is carried out identity validation.If confirm successfully, control system application voice-grade channel; If available free passage, then distribute a passage, and open the emergent broadcast in corresponding township.
At village level same treatment: by the phone of all for the whole county at village level responding agencies or individual, input system.When phone incoming call, control system is searched database and is carried out identity validation.If confirm successfully, control system application voice-grade channel; If available free passage, then distribute a passage, and open the emergent broadcast in corresponding village.
As long as the amplifier that receiving terminal erection receives terrestrial wireless digital television signal just can broadcast.Amplifier is by broadcasting Control Server control switch machine and adjustment volume; Connect electricity at ordinary times and be in holding state.
When there is the Sudden Public Crisis such as major natural disasters, accident, public health and social safety; cause or may cause great casualties, property loss, environmental destruction and serious social danger; during crisis public safety; system can stop normal broadcast immediately, preferentially broadcasts emergent broadcast.
Under daily broadcast mode, system default is seniority precedence; Emergent broadcast can arrange seniority precedence, the preferential two kinds of patterns of subordinate as required respectively.According to priority rule setting, high level broadcast can interrupt low-level broadcast, and the high level broadcasted content of preferential broadcast, priority progression can multistagely be arranged.
Can computer client, fixed telephone line or wireless phone signal be passed through, audio signal or note signal are sent to control centre, after then being decided according to priority level by control centre, audio-frequency information be broadcasted.During telephone-broadcast, emergent playing control system needs to carry out legitimacy certification to incoming call, in case illegal telephone-broadcast, authentication mode can be selected according to actual needs.
By the cryptographic protocol to control signal, addressable amplifier can identify the legitimacy of input signal automatically.When there being illegal signals to carry out co-channel interference attack, addressable amplifier will stop broadcast in 3S, and treat that interference signal disappears, addressable amplifier recovers normal work automatically.
By in controlling to the point-to-point Long-distance Control of addressable receiving terminal or the operating state (switch control rule, volume adjusting, receive frequency etc.) according to actual conditions adjustment addressable amplifier, thus just truly now suit measures to local conditions, the broadcast requirement of suiting measures to differing conditions in terms of time and farthest meet the different demands of broadcast control person.
Intelligent emergent broadcast system has completed whole digitized audio frequency process, meet the various transmission standards of Digital and analog, can simultaneously by wired co-cable transmission, FM transmission, broadband IP transmission, mobile UNICOM's logical sound Internet Transmission, cabled digital transmission, digital terrestrial transmissions, the transmission of broadcast special line, the multiple transmission mediums such as medium wave transmission, satellite transmission carry out broadcast synchronization transmission, revolutionize the conventional transmission pattern of broadcast.
Intelligent emergent broadcast system coding is encoded to basis with state administration regional planning and expands, and administrative region encodes six, small towns, village, group coding six, coding in all broadcasting signals is unified, realize multi-cascade Broadcast Control system, system compatibility is good, adapts to the use of China's all regions.
Receiving terminal can choose one or more receiving mode Received signal strength in transmission system, and various signal transmission is active and standby each other, facilitates system group network.Terminal equipment band maintenance remote controller, facilitates maintainer check terminal equipment basic parameter and arrange.
More than illustrate the utility model just illustrative; and it is nonrestrictive; those of ordinary skill in the art understand; when not departing from the spirit and scope that claims limit; many amendments, change or equivalence can be made, but all will fall in protection range of the present utility model.
Claims (3)
1. the emergency broadcase system based on DTMB, comprise signal source, audio frequency dynamic allocator, audio coder, emergent broadcast server, TS flows multiplexer, DTMB encoder and digital TV transmitter, it is characterized in that, described signal source is connected to audio frequency dynamic allocator, described audio frequency dynamic allocator by audio transmission to audio coder, described audio frequency dynamic allocator and emergent broadcast server, data between audio coder and emergent broadcast server are transmitted mutually by data wire, transfer of data after described audio coder process flows multiplexer to TS, data after described TS flows multiplexer process are sent to DTMB encoder by data wire, then data are launched by data television transmitter.
2. the emergency broadcase system based on DTMB according to claim 1, is characterized in that, described TS flows multiplexer received television program TS stream.
3. the emergency broadcase system based on DTMB according to claim 1, is characterized in that, described signal source comprises satellite-signal, district's level signal, city-level signal, flag level signal, phone is emergent, note is emergent and computer client.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520163557.7U CN204465549U (en) | 2015-03-23 | 2015-03-23 | Based on the emergency broadcase system of DTMB |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520163557.7U CN204465549U (en) | 2015-03-23 | 2015-03-23 | Based on the emergency broadcase system of DTMB |
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| CN204465549U true CN204465549U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520163557.7U Expired - Fee Related CN204465549U (en) | 2015-03-23 | 2015-03-23 | Based on the emergency broadcase system of DTMB |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112350792A (en) * | 2020-09-27 | 2021-02-09 | 福建新大陆通信科技股份有限公司 | Emergency broadcast data forwarding multiplexing method |
| CN113572553A (en) * | 2018-10-25 | 2021-10-29 | 杭州工信光电子有限公司 | Emergency broadcast loud speaker system |
-
2015
- 2015-03-23 CN CN201520163557.7U patent/CN204465549U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113572553A (en) * | 2018-10-25 | 2021-10-29 | 杭州工信光电子有限公司 | Emergency broadcast loud speaker system |
| CN112350792A (en) * | 2020-09-27 | 2021-02-09 | 福建新大陆通信科技股份有限公司 | Emergency broadcast data forwarding multiplexing method |
| CN112350792B (en) * | 2020-09-27 | 2023-05-30 | 福建新大陆通信科技股份有限公司 | Emergency broadcast data forwarding multiplexing method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |