CN202231730U - Emergency broadcast system based on broadcast data system - Google Patents
Emergency broadcast system based on broadcast data system Download PDFInfo
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- CN202231730U CN202231730U CN201120384335XU CN201120384335U CN202231730U CN 202231730 U CN202231730 U CN 202231730U CN 201120384335X U CN201120384335X U CN 201120384335XU CN 201120384335 U CN201120384335 U CN 201120384335U CN 202231730 U CN202231730 U CN 202231730U
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- emergency broadcase
- data
- modulator
- broadcase system
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Abstract
The utility model provides an emergency broadcast system based on a broadcast data system. In the utility mode, a county-city emergency broadcast system comprises a multifunctional controller, a time delay unit, an FM (Frequency Modulation) modulator, a data broadcast modulator, an RF (Radio Frequency) mixer, an externally modulated light transmitter, an erbium-doped fiber amplifier, and a light splitter; a town-level emergency broadcast system comprises a multifunctional controller, a data broadcast FM modulator, a mixer, a directly modulated laser transmitter, a light mixer, a first erbium-doped fiber amplifier, a second erbium-doped fiber amplifier, and a light splitter; and the village-level emergency broadcast system comprises a data broadcast light transmission FM modulator, a multiplexer, a light splitter, an AGC (Automatic Gain Control) light receiver and an FM radio. The emergency broadcast system has the benefits that the county-city emergency broadcast system, the town-level emergency broadcast system and the village-level emergency broadcast system are connected in sequence through a data cable, thereby facilitating unified management; and the FM modulators are adopted to carry out signal transmission after signal encryption algorithm, thereby improving the broadcast information safety.
Description
Technical field
The utility model relates to a kind of emergency broadcase system based on radio data system, relates in particular to a kind of emergency broadcase system that is used for counties and cities, small towns and the broadcasting of village's group.
Background technology
That Frequency Modulated Terminal does not have broadband networks, the emergent broadcasting equipment management system employing of local area network (LAN) FM is cable data broadcast system DBS (Data Broadcast System).Cable data broadcast system (DBS) is the transmission method with reference to wireless Data Broadcasting System (RDS).RDS is a kind of special radio broadcasting of Britain BBC broadcaster exploitation.I.e. " wireless Data Broadcasting System " (Radio Data System). it is in FM broadcasting transmits, to utilize subcarrier station name, program category, programme content and other information send with digital form.Tuner through having the RDS function just can be discerned these digital signals; And do response process, RDS broadcasting marrow is its AF and TA function, both automatic frequency adjustment of AF; When signal was lower than certain level, the AF function is other tranmitting frequency strings in the current radio station of search automatically.RDS radio system also exclusive " exchange of information " function, if emergency is arranged, distinctive signal will be sent in the radio station, makes broadcast receiver play by force, in addition, also has the time reference emission, functions such as self-alignment broadcast receiver time.
RDS is a kind of special radio broadcasting of Britain BBC broadcaster exploitation, i.e. " wireless Data Broadcasting System " (Radio Data System) is at the U.S. RBDS (Radio Broadcast Data System) that is otherwise known as.Wireless Data Broadcasting System is meant when carrying out FM broadcasting, utilizes the vacant frequency spectrum of fm baseband, transmits miscellaneous service information such as sound, data through frequency modulated subcarrier, have reduced investment, information audient extensively, characteristics such as conserve on spectrum.It has increased a channel subcarrier outside the coboundary of existing FM stereo broadcasting signal baseband frequency spectrum, be used for transmitting BDPSK digital information, and its speed is 9600bps.Aspect receiver, can discern these digital signals through tuner, and do response process with RDS function.This just makes traditional FM broadcasting when playing main program, can transmit some relevant with program or relevant with audience's daily life data messages.
RDS broadcasting has very many practical functions, and its marrow is its AF and TA function.AF is the automatic frequency adjustment; When signal is lower than certain level; AF function automatically search is broadcast the tranmitting frequency string of each transmitter of same program in same or adjacent reception district, if when AF finds another signal than original better more stable frequency, redirect is gone over automatically.Whole process need not any operation of user.TA is traffic announcements identification, is a switching signal, indicates and whether broadcasts traffic announcements.Receiver utilizes this signal to automatically switch on the program of traffic announcements, after traffic announcements finishes, gets back to original operating state.RDS radio system also exclusive " exchange of information " function, if emergency is arranged, distinctive signal will be sent in the radio station, makes broadcast receiver play by force; In addition, also has the time reference emission, functions such as self-alignment broadcast receiver time.According to the function of foregoing description, can utilize RDS wireless Data Broadcasting System remote control management FM broadcasting equipment, accomplish the function of emergency broadcase system.
In today of rapid development of information technology, emergency broadcase system is widely used in every field.And most emergency broadcase system comparatively is short of at aspects such as broadcast message safety and equipment unified managements.
The utility model content
The utility model technical problem to be solved is to provide a kind of broadcast message the safe and unified emergency broadcase system of equipment control.
A kind of emergency broadcase system based on radio data system; Comprise counties and cities' emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system; Described counties and cities emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system are connected through data wire in order; Described counties and cities emergency broadcase system comprises multifunctional controller, delayer, FM modulator, data broadcasting modulator, RF mixing, external modulation optical transmitter, erbium-doped fiber amplifier and optical branching device; Described multifunctional controller, delayer, data broadcasting modulator, RF mixing, external modulation optical transmitter, erbium-doped fiber amplifier are connected through data wire with optical branching device in order; The FM modulator is connected with RF mixing through data wire; The small towns emergency broadcase system comprises multifunctional controller, data broadcasting frequency interleaved modulation modulator, blender, directly transfers laser transmitter, optical mixer, first erbium-doped fiber amplifier, optical branching device and second erbium-doped fiber amplifier; Described multifunctional controller, data broadcasting frequency interleaved modulation modulator, blender, directly transfer laser transmitter, optical mixer, first erbium-doped fiber amplifier, optical branching device and second erbium-doped fiber amplifier to be connected in order through data wire; Village's group emergency broadcase system comprises that data broadcasting light sends frequency interleaved modulation modulator, multiplexer, optical branching device, AGC optical receiver and frequency modulation and receives sound amplifier; Described data broadcasting light sends frequency interleaved modulation modulator, multiplexer, optical branching device, AGC optical receiver and frequency modulation receipts sound amplifier and is connected in order through data wire; The optical branching device of said counties and cities emergency broadcase system is connected with the optical mixer of small towns emergency broadcase system through data wire, and second erbium-doped fiber amplifier of small towns emergency broadcase system is connected with the multiplexer of village's group emergency broadcase system.
Preferably, the multifunctional controller of said counties and cities emergency broadcase system is connected with audiomonitor through data wire.
Preferably, the frequency modulation of said village group emergency broadcase system is received sound amplifier and is connected with loudspeaker through data wire.
The beneficial effect of the utility model is:
1. counties and cities' emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system are connected through data wire in order, make emergency broadcase system more unified in equipment control;
2. adopt the FM modulator, after signal is handled through AES, carry out the signal transmission again, the broadcast message fail safe is improved.
Description of drawings
Fig. 1 is the parts relationship sketch map of a kind of emergency broadcase system of the utility model.
Embodiment
Below in conjunction with embodiment the utility model is described further, but the protection range of the utility model is not limited to this.
Embodiment 1
As shown in Figure 1; A kind of emergency broadcase system based on radio data system; Comprise counties and cities' emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system; Described counties and cities emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system are connected through data wire in order; Described counties and cities emergency broadcase system comprises multifunctional controller 1, delayer 2, FM modulator 3, RF mixing 4, external modulation optical transmitter 5, erbium-doped fiber amplifier 6 and photodetachment device 7; Described multifunctional controller 1, delayer 2, FM modulator 3, RF mixing 4, external modulation optical transmitter 5, erbium-doped fiber amplifier 6 and photodetachment device 7 are connected through data wire in order; The small towns emergency broadcase system comprises multifunctional controller 8, blender 9, directly transfers laser transmitter 10, optical mixer 11, first erbium-doped fiber amplifier 12, photodetachment device 13 and second erbium-doped fiber amplifier 14; Described multifunctional controller 8, blender 9, directly transfer laser transmitter 10, optical mixer 11, first erbium-doped fiber amplifier 12, photodetachment device 13 to be connected in order through data wire with second erbium-doped fiber amplifier 14; Village's group emergency broadcase system comprises that multiplexer 15, light separator 16, AGC optical receiver 17 and frequency modulation receives sound amplifier 18, and described multiplexer 15, light separator 16, AGC optical receiver 17 and frequency modulation are received sound amplifier 18 and is connected in order through data wire.
Embodiment 2
As shown in Figure 1; A kind of emergency broadcase system based on radio data system; At first satellite-signal, weather station signal and emergent broadcast singal transfer to the multifunctional controller of counties and cities' emergency broadcase system; Computer signal transfers to the data broadcasting modulator through serial communication; Multifunctional controller, delayer, data broadcasting modulator, RF mixing, external modulation optical transmitter, erbium-doped fiber amplifier and optical branching device transmit, handle signal successively, signal are transferred to the optical mixer of small towns emergency broadcase system again.Higher level's signal of small towns emergency broadcase system, microphone signal, telephone signal and emergent broadcast singal transfer to multifunctional controller; Computer signal transfers to the data broadcasting frequency interleaved modulation modulator through serial communication; Multifunctional controller, data broadcasting frequency interleaved modulation modulator, blender, directly transfer laser transmitter, optical mixer, first erbium-doped fiber amplifier, optical branching device and second erbium-doped fiber amplifier to be connected in order successively signal to be transmitted, handles, at last signal is transferred to the multiplexer of village's group emergency broadcase system through data wire.Higher level's signal, audio signal, emergent broadcast singal transfer to data broadcasting light frequency interleaved modulation modulator; Data broadcasting light sends frequency interleaved modulation modulator, multiplexer, optical branching device, AGC optical receiver and frequency modulation receipts sound amplifier and successively signal is transmitted, handles, and through loudspeaker information is play.
Embodiment 3
As shown in Figure 1, emergent broadcasting management systems is to broadcast message safety, equipment unified management demand and design.The different administrative staff that system can be cities and counties, small towns distribute corresponding authority; Do not arrive the method for the employing DBS data broadcasting in village at broadband networks.Wherein DBS FM modulator 3 possesses the function of sending digital signal, and the DBS frequency modulation at terminal is received sound amplifier 18 through having these digital signals of tuner identification of RDS function.Utilize subcarrier to transmit the DBS data message, can selection with good conditionsi counties and cities, the broadcasting of meeting an urgent need of small towns, village.When broadcasting need be met an urgent need by counties and cities, open the level DBS FM of counties and cities modulator 3, send order, the BDS modulator (optical transceiver) or the counties and cities that close small towns, village directly send order to village BDS frequency modulation amplifier; Counties and cities' broadcasting of meeting an urgent need, signal is along emergent broadcast channel, through BDS frequency modulation amplifier by loudspeaker or outdoor frequency modulation audio amplifier output (being full power state automatically).When broadcasting need be met an urgent need in the small towns, open township level DBS FM modulator 3, send order, the DBS optical transceiver or the counties and cities that close the village directly send order to village DBS frequency modulation receipts sound amplifier 18; The small towns broadcasting of meeting an urgent need, signal are received sound amplifier 18 by loudspeaker or outdoor frequency modulation audio amplifier output (being full power state automatically) along emergent broadcast channel through DBS frequency modulation.DBS FM optical transceiver is opened in village's broadcasting of meeting an urgent need, and receives sound amplifier 18 by loudspeaker or outdoor frequency modulation audio amplifier output (being full power state automatically) through DBS frequency modulation.
Adopt the geocoding mode of province, county, city, small towns and village's group based on the equipment of the emergency broadcase system of RDS; Higher level equipment possesses the authority of management subordinate equipment, therefore can support the region operation of counties and cities, small towns or village's group equipment or operation separately according to authority.Simultaneously, equipment also has the device type encoded radio simultaneously, can also select when equipment is operated the equipment of some type is carried out concrete operation.Classify according to operation of equipment instruction, possess facility switching control, volume control, incoming level control, output level control and FREQUENCY CONTROL based on the emergency broadcase system of RDS.In order to guarantee safety of data transmission, all transfer of data all increase CRC check, just equipment has only the instruction that can receive through CRC check to operate after receiving data.Owing to all be digital processing, has very strong antijamming capability based on the emergency broadcase system of RDS.
Based on the emergency broadcase system of RDS, through using 57 kHz subcarrier transmission digital signals, realized real time remote control terminal frequency modulation amplifier, thereby reached the function of emergent broadcasting.Further, through design counties and cities, small towns, the three grades of codings in village, can also reach meticulous emergent broadcasting by the transmission of digital signals of regioselectivity by the zone.
Claims (3)
1. emergency broadcase system based on radio data system; It is characterized in that: comprise counties and cities' emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system; Described counties and cities emergency broadcase system, small towns emergency broadcase system and village's group emergency broadcase system are connected through data wire in order; Described counties and cities emergency broadcase system comprises multifunctional controller, delayer, FM modulator, data broadcasting modulator, RF mixing, external modulation optical transmitter, erbium-doped fiber amplifier and optical branching device; Described multifunctional controller, delayer, data broadcasting modulator, RF mixing, external modulation optical transmitter, erbium-doped fiber amplifier are connected through data wire with optical branching device in order; The FM modulator is connected with RF mixing through data wire; The small towns emergency broadcase system comprises multifunctional controller, data broadcasting frequency interleaved modulation modulator, blender, directly transfers laser transmitter, optical mixer, first erbium-doped fiber amplifier, optical branching device and second erbium-doped fiber amplifier; Described multifunctional controller, data broadcasting frequency interleaved modulation modulator, blender, directly transfer laser transmitter, optical mixer, first erbium-doped fiber amplifier, optical branching device and second erbium-doped fiber amplifier to be connected in order through data wire; Village's group emergency broadcase system comprises that data broadcasting light sends frequency interleaved modulation modulator, multiplexer, optical branching device, AGC optical receiver and frequency modulation and receives sound amplifier; Described data broadcasting light sends frequency interleaved modulation modulator, multiplexer, optical branching device, AGC optical receiver and frequency modulation receipts sound amplifier and is connected in order through data wire; The optical branching device of said counties and cities emergency broadcase system is connected with the optical mixer of small towns emergency broadcase system through data wire, and second erbium-doped fiber amplifier of small towns emergency broadcase system is connected with the multiplexer of village's group emergency broadcase system.
2. according to the said emergency broadcase system based on radio data system of claim 1, it is characterized in that: the multifunctional controller of said counties and cities emergency broadcase system is connected with audiomonitor through data wire.
3. according to the said emergency broadcase system based on radio data system of claim 1, it is characterized in that: the frequency modulation of said village group emergency broadcase system is received sound amplifier and is connected with loudspeaker through data wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120384335XU CN202231730U (en) | 2011-10-11 | 2011-10-11 | Emergency broadcast system based on broadcast data system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120384335XU CN202231730U (en) | 2011-10-11 | 2011-10-11 | Emergency broadcast system based on broadcast data system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231730U true CN202231730U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120384335XU Expired - Fee Related CN202231730U (en) | 2011-10-11 | 2011-10-11 | Emergency broadcast system based on broadcast data system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801486A (en) * | 2012-07-31 | 2012-11-28 | 蒋能 | Multi-frequency point emergency broadcast realizing method |
| CN102833081A (en) * | 2012-09-17 | 2012-12-19 | 江苏亿通高科技股份有限公司 | One-time response method for same emergency messages |
| CN103281145A (en) * | 2013-06-05 | 2013-09-04 | 北京金广通科技有限公司 | Command control management system for urgent messages |
| CN103986541A (en) * | 2014-05-22 | 2014-08-13 | 北京视博数字电视科技有限公司 | Emergency broadcasting system |
| CN104468003A (en) * | 2014-12-11 | 2015-03-25 | 成都新光微波工程有限责任公司 | Intelligent emergency broadcast system |
| CN104837121A (en) * | 2015-04-03 | 2015-08-12 | 广州市迪士普音响科技有限公司 | Broadcasting system |
| CN107733544A (en) * | 2017-11-02 | 2018-02-23 | 深圳市路畅科技股份有限公司 | A kind of radio and a kind of acquisition methods and device of preset station tranmitting frequency table |
-
2011
- 2011-10-11 CN CN201120384335XU patent/CN202231730U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801486A (en) * | 2012-07-31 | 2012-11-28 | 蒋能 | Multi-frequency point emergency broadcast realizing method |
| CN102833081A (en) * | 2012-09-17 | 2012-12-19 | 江苏亿通高科技股份有限公司 | One-time response method for same emergency messages |
| CN103281145A (en) * | 2013-06-05 | 2013-09-04 | 北京金广通科技有限公司 | Command control management system for urgent messages |
| CN103986541A (en) * | 2014-05-22 | 2014-08-13 | 北京视博数字电视科技有限公司 | Emergency broadcasting system |
| CN103986541B (en) * | 2014-05-22 | 2017-01-11 | 北京视博数字电视科技有限公司 | Emergency broadcasting system |
| CN104468003A (en) * | 2014-12-11 | 2015-03-25 | 成都新光微波工程有限责任公司 | Intelligent emergency broadcast system |
| CN104837121A (en) * | 2015-04-03 | 2015-08-12 | 广州市迪士普音响科技有限公司 | Broadcasting system |
| CN104837121B (en) * | 2015-04-03 | 2018-11-30 | 广州市迪士普音响科技有限公司 | A kind of broadcast system |
| CN107733544A (en) * | 2017-11-02 | 2018-02-23 | 深圳市路畅科技股份有限公司 | A kind of radio and a kind of acquisition methods and device of preset station tranmitting frequency table |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou MIIT photoelectron Co., Ltd. Assignor: Jiang Neng Contract record no.: 2013330000084 Denomination of utility model: Emergency broadcast system based on broadcast data system Granted publication date: 20120523 License type: Exclusive License Record date: 20130422 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| 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: 20120523 Termination date: 20171011 |
|
| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Hangzhou MIIT photoelectron Co., Ltd. Assignor: Jiang Neng Contract record no.: 2013330000084 Date of cancellation: 20191022 |