CN102801486A - Multi-frequency point emergency broadcast realizing method - Google Patents
Multi-frequency point emergency broadcast realizing method Download PDFInfo
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- CN102801486A CN102801486A CN2012102673295A CN201210267329A CN102801486A CN 102801486 A CN102801486 A CN 102801486A CN 2012102673295 A CN2012102673295 A CN 2012102673295A CN 201210267329 A CN201210267329 A CN 201210267329A CN 102801486 A CN102801486 A CN 102801486A
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Abstract
The invention provides a multi-frequency point emergency broadcast realizing method, comprising the steps in sequence as follows: 1, a receiving terminal is provided with a plurality of receiving frequency points in advance, and controls a broadcast module to broadcast according to a pre-set prior sequence; and a broadcast front terminal can realize point-to-point or point-to-face broadcast to each terminal with an assigned and set individual address, so that the interference caused by system external strong common-frequency signals can be effectively prevented; and system encoding has uniformity and security; and 2, a terminal receiving and expanding machine receives digital signals and searches an emergency signal instruction under each frequency, so that the terminal receiving and expanding machine is converted into an emergency frequency to broadcast emergency broadcast. The multi-frequency point emergency broadcast realizing method provided by the invention has the beneficial effects in that the broadcast front end can realize the point-to-point or point-to-face broadcast to the terminal, so that the interference of strong common-frequency signals outsides the system can be effectively prevented, and the system encoding has the uniformity and the security; and RDS (Radio Data System) signal transmission uses a PSK (Phase Shift Keying) modulation manner, so that the signal transmission stability is high, and the transmission rate is high.
Description
Technical field
The present invention relates to the emergent broadcasting of a kind of multifrequency point implementation method, relate in particular to a kind of emergent broadcasting of multifrequency point implementation method that is used for city, county, township and village's broadcasting.
Background technology
Broadcast system is very simple, a stable signal transmission system; But in recent years, the broadcast singal transmission technology is maked rapid progress, and the formulation process of GB, rower is slow; Each producer is because without ready patterns to follow; The equipment and technology scheme has nothing in common with each other, each other can not be compatible, and brought inconvenience for our solution formulation and lectotype selection.Will send signal to each receiving terminal, and the signal transmission causes the interference of homogenous frequency signal easily, system coding also exists certain hidden danger at aspects such as uniformity and fail safes.
Summary of the invention
Technical problem to be solved by this invention is to provide the emergent broadcasting of multifrequency point that a kind of signal transmission is anti-tampering, system coding is safe and uniformity is strong implementation method.
The emergent broadcasting of a kind of multifrequency point implementation method comprises following sequential steps:
1) each receiving terminal distribution is provided with independent address, broadcast head end realizes that to receiving terminal point-to-point or point-to-area broadcast singal transmits through coding control;
2) discern automatically through receiving terminal and broadcast by preset priority, method is following: two receiver modules of every receive-only terminal configuration, and one is search module; Another is a broadcast module, receiving terminal preset several receive frequency F1, F2 ..., Fn, n is less than 10; CPU is to the search module preset frequency of search at interval constantly at preset timed intervals, searches CPU control broadcast module behind the signal, and broadcasts by the priority control broadcast module that has preset; During daily broadcasting, priority level is preset F1>F2>F3>... Fn, realize higher level's priority principle; During emergent broadcasting; Send instruction after pressing emergent broadcast button, receiving terminal receives that the back starts emergent presentation mode, and this moment, priority level was superior to daily broadcasting.
Preferably, the receiving terminal in the said step 1 adopts Alternating Current Power Supply, and a plurality of supply terminals are set in the village, and supply terminals is provided with by power supply area between two parties.
Preferably, the receiving terminal in the said step 1 is selected the receive mode of outdoor amplifier band sound column for use, all adopts the outdoor amplifier of 20/25*2W, and every outdoor amplifier has two-way output, connects the sound column of a 20/25W respectively.
Preferably, the RDS signal transmission form is adopted in the transmission of the broadcast singal in the said step 1.
Preferably, the PSK modulation system is adopted in described RDS signal transmission.
Beneficial effect of the present invention is:
Receiving terminal preset several receive frequency F1, F2 ..., Fn; N is less than 10; CPU is to the search module preset frequency of search at interval constantly at preset timed intervals, searches CPU control broadcast module behind the signal, and broadcasts by the priority control broadcast module that has preset; Through each receiving terminal is distributed independent address is set; Broadcast head end can realize point-to-point or point-to-area broadcasting to the terminal, can effectively prevent the interference of the outer strong homogenous frequency signal of locking system, and system coding has uniformity, fail safe;
2. the PSK modulation system is adopted in the transmission of RDS signal, makes stable signal transmission property high, and transmission rate is high;
3. receiving terminal adopts Alternating Current Power Supply, and a plurality of supply terminals are set in the village, and supply terminals is provided with by power supply area between two parties, and Alternating Current Power Supply adopts the 60V Alternating Current Power Supply, through network power supply, does not need the pull the wire power supply, makes power taking more convenient.
Embodiment
Below in conjunction with embodiment the present invention is described further, but protection scope of the present invention is not limited to this.
Embodiment 1
The emergent broadcasting of a kind of multifrequency point implementation method comprises following sequential steps:
1) each receiving terminal distribution is provided with independent address, broadcast head end realizes that to receiving terminal point-to-point or point-to-area broadcast singal transmits through coding control;
2) discern automatically through receiving terminal and broadcast by preset priority, method is following: two receiver modules of every receive-only terminal configuration, and one is search module; Another is a broadcast module, receiving terminal preset several receive frequency F1, F2 ..., Fn, n is less than 10; CPU is to the search module preset frequency of search at interval constantly at preset timed intervals, searches CPU control broadcast module behind the signal, and broadcasts by the priority control broadcast module that has preset; During daily broadcasting, priority level is preset F1>F2>F3>... Fn, realize higher level's priority principle; During emergent broadcasting; Send instruction after pressing emergent broadcast button, receiving terminal receives that the back starts emergent presentation mode, and this moment, priority level was superior to daily broadcasting.
Preferably, the receiving terminal in the said step 1 adopts Alternating Current Power Supply, and a plurality of supply terminals are set in the village, and supply terminals is provided with by power supply area between two parties.
Preferably, the receiving terminal in the said step 1 is selected the receive mode of outdoor amplifier band sound column for use, all adopts the outdoor amplifier of 20/25*2W, and every outdoor amplifier has two-way output, connects the sound column of a 20/25W respectively.
Preferably, the RDS signal transmission form is adopted in the transmission of the broadcast singal in the said step 1.
Preferably, the PSK modulation system is adopted in described RDS signal transmission.
Embodiment 2
The emergent broadcasting of a kind of multifrequency point implementation method comprises following sequential steps:
1) the city-level signal frequency is made as F1, signal frequency at county level and is made as that F2, township level signal frequency are made as F3, at village level signal frequency is made as F4; Priority F1 is set>F2>F3>F4; The terminal amplifier is constantly searched for the signal of each frequency at preset timed intervals at interval, and according to priority broadcasts;
2) the terminal amplifier is accepted digital signal, searches for the emergency signal instruction under each frequency, and the terminal amplifier switches to emergency frequency and broadcasts emergent broadcasting.
Terminal amplifier in the said step 1 is the outdoor amplifier of 20/25*2W, and every outdoor amplifier has two-way output, and two-way output connects the sound column of a 20/25W respectively.
The RDS signal transmission form is adopted in emergency signal transmission in the said step 2.
The PSK modulation system is adopted in described RDS signal transmission.
Embodiment 3
The emergent broadcast transmitted method and apparatus of whole multifrequency point is following:
Fore-end is divided into county's front end, town's front end and village's front end.All front ends all need be equipped with audiogenic device (DVD, radio reception head, microphone), intelligent data frequency interleaved modulation modulator (containing coding controller, modulator, demodulator, phone inserter) and monitor speaker etc., and county's front end also need be equipped with webmaster main frame, audio workstation, power-supply controller of electric, UPS, sound console, rack (county's front end three, small towns bigeminy, village one) etc. with town's front end.
Intelligent data broadcasting is through each receiving terminal is distributed independent address to be set, and broadcast head end can realize point-to-point or point-to-area broadcasting to the terminal.Digital coding is adopted in coding control; Control command and address code adopt 57/67 K subcarrier coding transmission; Can transmit multiple instructions such as identification code, switching on and shutting down sign indicating number, frequency and volume adjusting; Have multiple visit decoding and error correction, can effectively prevent the interference of the outer strong homogenous frequency signal of locking system, system coding has uniformity, fail safe.
Automatically discern and broadcast by preset priority through receiving terminal, concrete grammar is two receiver modules of every receive-only terminal configuration, and one is search module; Another is a broadcast module; Receiving terminal presets 4 and receives frequency F1, F2, F3, F4, respectively to go on the market, county, town, village, CPU is to the search module continuous preset frequency of search at interval at preset timed intervals; CPU controls broadcast module after searching signal, and broadcasts by the priority control broadcast module that has preset.During daily broadcasting, priority level is preset F1>F2>F3>F4, realize higher level's priority principle; During emergent broadcasting, pressing and emergently sending instruction after broadcasting button, receiving terminal receives that the back starts emergent presentation mode, and this moment, priority level was superior to daily broadcasting.When phone intercutted, its grade was superior to other broadcast, and implementation method is with emergent broadcasting.
Receiving terminal adopts the 60V Alternating Current Power Supply, and a plurality of supply terminals are set in the village, and supply terminals is provided with by power supply area between two parties, 600 meters of each supply terminals design coverage distances.Concrete network configuration is: at supply terminals the special-purpose 60V charger of broadcasting is installed; Confirm charger rated power by institute's band receiving terminal quantity; Self-powered point lays 75-9L or 75-12L coaxial cable to its coverage direction; For receiving terminal only provides electric power, the required broadcast radio frequency signals of receiving terminal inserts nearby.Adopt this network configuration, receiving terminal need dispose power supply input and two interfaces of signal input, and charger delivery outlet and receiving terminal power supply input port interface standard are 5/8, and " 24 male connectors, receiving terminal signal input interface are standard english F type interface.
Receiving terminal is selected the receive mode of outdoor amplifier band sound column for use, all adopts the outdoor amplifier of 20/25*2W, and every outdoor amplifier has two-way output, connects the sound column of a 20/25W respectively.Receiving terminal is according to 150 meters principle configurations that are provided with a group at interval, and sound column is installed in the highest point that allows on the cement pole, and back-to-back installation is towards consistent with place street trend.
Claims (6)
1. the emergent broadcasting of a multifrequency point implementation method is characterized in that, comprises following sequential steps:
Each receiving terminal distribution is provided with independent address, and broadcast head end realizes that to receiving terminal point-to-point or point-to-area broadcast singal transmits through coding control;
Automatically discern and broadcast by preset priority through receiving terminal, method is following: two receiver modules of every receive-only terminal configuration, and one is search module; Another is a broadcast module, receiving terminal preset several receive frequency F1, F2 ..., Fn, n is less than 10; CPU is to the search module preset frequency of search at interval constantly at preset timed intervals, searches CPU control broadcast module behind the signal, and broadcasts by the priority control broadcast module that has preset; During daily broadcasting, priority level is preset F1>F2>F3>... Fn, realize higher level's priority principle; During emergent broadcasting; Send instruction after pressing emergent broadcast button, receiving terminal receives that the back starts emergent presentation mode, and this moment, priority level was superior to daily broadcasting.
2. the emergent broadcasting of multifrequency point according to claim 1 implementation method, it is characterized in that: the receiving terminal in the said step 1 adopts Alternating Current Power Supply, and a plurality of supply terminals are set in the village, and supply terminals is provided with by power supply area between two parties.
3. the emergent broadcasting of multifrequency point according to claim 2 implementation method, it is characterized in that: described Alternating Current Power Supply adopts the 60V Alternating Current Power Supply.
4. the emergent broadcasting of multifrequency point according to claim 1 implementation method; It is characterized in that: the receiving terminal in the said step 1 is selected the receive mode of outdoor amplifier band sound column for use; All adopt the outdoor amplifier of 20/25*2W; Every outdoor amplifier has two-way output, connects the sound column of a 20/25W respectively.
5. the emergent broadcasting of multifrequency point according to claim 1 implementation method is characterized in that: the RDS signal transmission form is adopted in the broadcast singal transmission in the said step 1.
6. the emergent broadcasting of multifrequency point according to claim 5 implementation method is characterized in that: the PSK modulation system is adopted in described RDS signal transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102673295A CN102801486A (en) | 2012-07-31 | 2012-07-31 | Multi-frequency point emergency broadcast realizing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102673295A CN102801486A (en) | 2012-07-31 | 2012-07-31 | Multi-frequency point emergency broadcast realizing method |
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| CN102801486A true CN102801486A (en) | 2012-11-28 |
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| CN2012102673295A Pending CN102801486A (en) | 2012-07-31 | 2012-07-31 | Multi-frequency point emergency broadcast realizing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105703860A (en) * | 2016-03-15 | 2016-06-22 | 北京数码视讯科技股份有限公司 | Emergency broadcast method and emergency broadcast device |
| CN111525971A (en) * | 2020-04-23 | 2020-08-11 | 杭州万联网络科技有限公司 | Emergency communication broadcast receiving method, system, intelligent terminal and storage medium |
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| JP2004186741A (en) * | 2002-11-29 | 2004-07-02 | Kenwood Corp | Transmitter, receiver, transmission method, reception method and program |
| CN201656966U (en) * | 2010-03-28 | 2010-11-24 | 徐州超伟电子设备制造有限公司 | Radio broadcasting equipment |
| CN102437890A (en) * | 2011-10-31 | 2012-05-02 | 深圳市赛格导航科技股份有限公司 | Method for managing radio based on real-time positioning information in vehicle and system thereof |
| CN202231730U (en) * | 2011-10-11 | 2012-05-23 | 蒋能 | Emergency broadcast system based on broadcast data system |
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2012
- 2012-07-31 CN CN2012102673295A patent/CN102801486A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004186741A (en) * | 2002-11-29 | 2004-07-02 | Kenwood Corp | Transmitter, receiver, transmission method, reception method and program |
| CN201656966U (en) * | 2010-03-28 | 2010-11-24 | 徐州超伟电子设备制造有限公司 | Radio broadcasting equipment |
| CN202231730U (en) * | 2011-10-11 | 2012-05-23 | 蒋能 | Emergency broadcast system based on broadcast data system |
| CN102437890A (en) * | 2011-10-31 | 2012-05-02 | 深圳市赛格导航科技股份有限公司 | Method for managing radio based on real-time positioning information in vehicle and system thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105703860A (en) * | 2016-03-15 | 2016-06-22 | 北京数码视讯科技股份有限公司 | Emergency broadcast method and emergency broadcast device |
| CN105703860B (en) * | 2016-03-15 | 2018-10-02 | 北京数码视讯科技股份有限公司 | A kind of emergent broadcast method and device |
| CN111525971A (en) * | 2020-04-23 | 2020-08-11 | 杭州万联网络科技有限公司 | Emergency communication broadcast receiving method, system, intelligent terminal and storage medium |
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Application publication date: 20121128 |