First, the village through the broadcast overview
The last century, the sixties and sixties, in our country basically formed a rural "to the county radio station as the center, to the commune amplification station as the basis of green transmission as the main means" high quality, good performance of rural radio network, with its Low cost of investment, listening to a wide range of coverage, delivery speed, good publicity and other characteristics, once the rural grassroots cadres and the masses to understand the new policy, learn new knowledge, master new skills and upload the main channel. In the promotion of the party's line, principles, policies, promote rural work, enrich the people's cultural life and so play a very important role.
With the rise and promotion of multimedia such as television, Internet and so on, the rural radio as the main propaganda position gradually lost its main body status, and now has been used in almost complete state, in a completely paralyzed state, leading to county and county, county and village, Inter-broadcast network interruption. Making the medical, planting, breeding, weather, party policy and flood control and other information channels are poor, rural spiritual civilization construction can not be harmonious with the pace of development of the times, become a stumbling block to build a new socialist countryside.
Guangzhou Star Hongde Electronic Technology Co., Ltd. according to the needs of China's rural radio, integrated China's rural radio development trends, the use of integrated broadband network and broadcast transmission of new thinking, the spirit of "advanced, scientific, economic, practical" phase Combined with the design principles, the design of "broadcast signal, control signal and broadband network" signal cable transmission of IP digital network rural radio "village ring" system. The system has been built on the basis of "ADSL telephone broadband", which is transmitted by IP digital technology. It has the advantages of simple structure, convenient construction, cost saving, stable and reliable, economical and practical way through transmission and transmission of rural radio signals on ADSL telephone broadband Characteristics, by the majority of farmers favorite.
As a new and practical and modern modern broadcasting equipment, the village-based network broadcasting system is leading the development trend of modern intelligent broadcasting system in the 21st century, conforms to the current pace of development of Chinese science and technology, conforms to the public broadcasting industry orientation and requirements, and is widely regarded as an alternative to tradition Broadcast of the harsh tweeters broadcast green environment-friendly products. The system uses the latest IP digital technology, automatic control technology, network constant voltage conversion transmission technology; with a wide range of coverage, unlimited expansion, easy installation and maintenance, less investment, sound and beautiful features. Completely solve the traditional cable radio routing difficulties, the installation of complex, poor expansion, damage to the wall and the external environment and other issues. For the current large-scale, regional wide rural areas, ip network broadcast with traditional cable can not match the superiority. Webcast system is widely used in villages and towns, industrial and mining enterprises, all kinds of institutions, urban areas, parks and other scenic areas.
Second, the village through the broadcast demand design
× × County with cable TV village network, more suitable for the construction of FM cable rural radio "village ring" system, according to its construction requirements and our rural radio construction of careful thinking, design in the city, township, the establishment of radio stations, Natural village to install rural radio terminal, in order to achieve IP network rural radio "village ring" overall planning. Designed as follows:
Requires a powerful system, easy to use, easy to install. At the same time put forward the following several key requirements:
1, as the livelihood of the project, the system choose what kind of transmission to ensure the stability of the system
2, the main control room can be achieved alone on one or more villages for broadcast control.
3, to ensure that "village" through the use of radio system management convenience
4, the county government, the town government, the village government has system-related authority, according to the authority of the broadcast system management and use.
5, the broadcast system has a simple broadcast conference function.
6, can be achieved county government, town government, village government according to the relevant authority to achieve remote broadcast.
7, IP network radio can be in the control center server is closed or the server network software is turned off the situation can also be the same for each rural and township intercom, paging call, background music player;
8, in some emergency situations (such as emergency disaster notification, etc.) control center server failure need to standby server for emergency switching, switching time is less than 20 milliseconds;
The specific implementation function is as follows:
1, set up in the county radio station "village ring" radio front-end equipment, digital / analog sound source playback
2, in the township to set up two radio station, you can set the area under the jurisdiction of the information broadcast in a timely manner broadcast
3, in the village set up three radio station, you can village-level management services for timely broadcast
4, in each natural village set up broadcast receiving point, the use of multiple receiving methods, with the original village-level radio fusion
5, in the original "village" radio and television networks, the use of 88 ~ 108MHz insert "village ring" radio
6, cable television signal and the "village ring" broadcast signal transmission, do not interfere with each other
Third, the village village network radio system function characteristics and application
Characteristics of Village - based Network Broadcasting System
On the server side
Ø Dual-core CPU, with high-capacity memory, to ensure smooth and fast system operation, the standard TCP / IP protocol, the real embedded operating system, no need to install the operating system (another installation of the host software hardware devices, may cause system instability ), Embedded hardware architecture system, the system more stable and reliable;
Ø WEB background management, password login, detailed and complex timing playback custom plan complete background editing processing, to ensure that users use the most direct and most convenient, and the editing and debugging work to the technical support staff or system management personnel, directly simplifies the user Learning difficulty;
Ø energy-saving structure design, work power consumption is less than 5W, standby less than 2W;
Ø GUI graphical interface, 7-inch LCD LCD screen with a resistive touch screen, the user interface is simple and intuitive, touch interface emergency stop, the play mode playback settings through the background editing mode control operation is convenient and provides a temporary scheduled broadcast Task, the task can be defined as at the same time to different network front-end equipment to provide different programs to play, you can do multi-source multi-partition playback tasks at the same time can also set the preset temporary time to play the task; temporary broadcast,
Ø audio playback support a variety of modes, a single order of play, loop, random play; limited play and so on. In the playback process can be free to suspend, restore; and any changes in the progress of the play;
Ø SD card slot 1, the administrator can use multiple SD card management, according to the timing plan is different, the use of different tasks SD card, but also as a data backup card, plug and play, the system more convenient, Fast; standard configuration 4G Flash, the user can choose a larger capacity, maximum support 128G;
Ø provide basic 4-way digital audio player, stackable extended to more than 128 (with bandwidth);
Ø provide local 2 analog audio output, in the absence of network conditions, but also can be used as a 2-way audio output program timer playback device, the system more flexible and reliable, as an alternative simulation system program broadcast host can complete the higher requirements Program timing playback requirements, in the case of network failure through the analog broadcast equipment to complete the sound playback requirements;
Ø 6 analog audio input at the same time to provide a variety of interface socket type: XLR3 socket (XLR), TRS interface (6.3mm female), RCA socket (Lotus mother), greatly facilitate the input device due to different interfaces And solve the problem of increasing the conversion head; this road analog audio and equipment on the 4th road digital audio after the output, to ensure that music and broadcast synchronization to meet the special broadcast requirements of the broadcast problem;
Ø detailed automatic monitoring of playback status, intuitive playback of the graphics spectrum display;
Ø 19-inch 4U aluminum panel chassis, high-grade beautiful;
Ø support the main, standby server, automatically switch less than 20 milliseconds, to ensure stable operation of the system;
Ø can be turned off, open the power amplifier on each node, before the regular playback can be set to 1 minute in advance to open with the output control power supply network audio output control interface DM2022 control power port.
Ø WEB management, each terminal equipment independent WEB management interface, configuration information more detailed. Management is more simple, can automatically gateway;
Compatibility, equipment using software decoding, compatible with a variety of audio formats, MP3, WAV ... ... and so on;
Ø upgrade easy to maintain: including U disk upgrade, network upgrades, and other upgrades
Ø The system uses TCP / IP based RH-AUDIO (Ruijang) network broadcasting system. Here the choice of RH-AUDIO (Ruijang) the advantages of network radio is two aspects, 1, program advantages, 2, technical performance advantages.
perfect fire alarm function, with the fire system linkage, the network alarm matrix to provide fire drill function to ensure maximum fire safety. A variety of RH-AUDIO (Ruijie) equipment model provides a number of linkage interface: 24V, short-circuit signal, 485 signal to meet the various requirements of the use of functional requirements.
5, server and network software RH-AUDIO (Ruijie) network public broad
Village - wide network broadcasting system function
1, each village can have a different program
2, each village can own on-demand programs, U disk play
3, at the village level and other villages can call, the leadership can be any village to another village, the real sense of the village
3, authorized to speak in any position, not necessarily in the engine room, in any one can access the Internet
4, the need for telecommunications 100M fiber access costs
5, may be affected by the network
6, can be year, month, week, day set a variety of modes automatically play
7, can be divided into villages, sub-rural arbitrary timing, fixed-point automatic / manual radio
8, can be extended electronic bulletin board, publicity government, science and technology and other text information
9, the system architecture science, simple structure, easy installation and commissioning
Automatically on the village automatic / manual radio, regular music ringtones or background music
The system can be programmed according to the automatic opening and closing equipment power supply, multiple sets of work and rest time 24 hours a day programming (accurate to seconds). User-friendly music ringtones, radio programs automatically play, you can set a different daily life and ring music and background music, increase the cultural atmosphere. The schedule can be adjusted automatically in spring and autumn and provides special options for sunny days and holidays.
Automatic broadcast timing control (programming operation) at different times every day need to play music and area through the system programming, set the player in advance, any changes in the district by week programming, up to 2048 time points per day, to achieve all-day automatic broadcast, No special duty, fully automated control.
Automatic / manual partition control (IP address to determine the unique partition), partition any combination of broadcast
Each terminal sets a unique IP address, the address settings follow the standard TCP / IP protocol, each terminal can be uniquely identified within the network.
By controlling the software settings, any one area or multiple regions to automatically play different content, do not interfere with each other
Can be broadcast to a specific area (microphone or analog audio capture broadcast) / broadcast (audio file playback)
Support multi-channel network audio source concurrent broadcast
Through the system software settings, you can achieve unattended, set a number of times to play more than the first track of different background music. You can use the system settings to play different background music in different areas at the same or different times.
Each network audio bandwidth is not greater than 128K, while 10 concurrent program bandwidth of 1M or so
Different audio files are played to different IP addresses of network terminals
Through the host to control and operation, can achieve multi-source for multiple partitions of any addressing broadcast.
Bandwidth allows up to 3000 broadcast output signals.
Between the village and the village, between the village and the town, between the town and the paging function
The system can be divided according to the needs of multiple regions, system administrators, leaders can use the software or paging microphone on the demand area paging speech. Different users can broadcast and notify their jurisdictions or other areas.
Remote paging function, managers and unit leaders do not need to go to the engine room, in their own office can be issued to the management information on the unit; leadership can stay in the whole unit radio speech. Break the traditional unit leadership must go to the main room to speak on the status of the unit. Users can be authorized to speak to specific areas and announce broadcast announcements
Between the village and the village, between the village and the town, between the town and the town can achieve intercom function
Host room can be achieved and the terminal intercom, the terminal can be achieved between the two intercom
And fire system linkage, to the village inside the emergency fire broadcast
System and fire linkage, support all the way to an emergency broadcast priority. The equipment within the system, regardless of the state, as long as there is an emergency broadcast signal input, automatic forced broadcast, and automatically transferred to the maximum volume. No action, automatically trigger the entire system to start and access the alarm broadcast, according to the preselection settings immediately enter the default alarm mode
The system can configure the fire interface host to achieve the network broadcast fire system linkage, automatically start the default emergency broadcast task
To the village to regularly broadcast network radio
The system receives real-time broadcast (RTSP protocol and mms protocol) of the relevant broadcast area via the Internet radio program received by the Internet radio software.
System standard support 1 network radio, can be extended to support the same time concurrent multi-channel network radio forwarded to the terminal to receive, but the system needs to have sufficient bandwidth
The village terminal playback device is rich in function
Network voice terminal using hardware audio decoding, with automatic error correction function, high-fidelity sound balance, to ensure that the decoded audio signal with CD sound quality, and computer output digital music has exactly the same effect.
1, automatic reception of documents broadcast, acquisition tasks, Internet radio, network paging, network intercom
2, manual on-demand server audio resources
3, paging other terminals, forward the local microphone audio or live analog audio capture broadcast
4, intercom: with other terminals, pager microphone intercom
5, selective broadcast: select the other terminal is receiving the network task to monitor
6, U disk play: choose to play U disk directory audio files
7, the local public address: plug in the microphone or the local audio signal, the terminal directly when the use of active speakers
8, extended support Bluetooth microphone loudspeaker (not standard)
9, extended support for on-site monitoring function (non-standard, need to built-in pickup)
10, extended support network switching module
Powerful management
1, WEB management: users can log directly through the browser to manage the entire network broadcast system, without installing any software, suitable for administrators in any location on the network broadcast system management (programming, permissions distribution, password modification, manual control playback, etc.). Administrators can use any computer over the network to make volume adjustments to a single terminal device or simultaneously to multiple terminal devices, play audio files, and so on.
2, sub-control software management operations: support through the sub-control computer operation to open the partition, the use of computer headset speech or play audio files and other basic operations, it is suitable for the use of leadership
3, sub-control workstation management: the standard hardware sub-control platform to support the sub-control station to open the rest of the terminal power, play the server's audio program, or play the local collection of line audio
4, rights management: can be arbitrarily set with the use of authority, including the authority of the task control and terminal management authority, the other can also set up authority on the terminal. Unauthorized operation is invalid. The system can set up a variety of different roles, set up a super administrator, supervisor, query administrator, control the administrator, different permissions of the administrator can carry out different authorization operation.
5, terminal WEB management: all terminals support direct WEB page management, including the terminal IP address settings, DHCP settings, basic information configuration, remote restart, software upgrades and other operations, can be remotely logged to the terminal direct operation, greatly facilitate The entire system maintenance and management, you can also directly modify the terminal login password, easy management, without permission to operate the management terminal, while supporting the terminal password to modify the function
6, intercom and on-site monitoring function: the system can be set according to the needs of intercom function, the terminal and the terminal, the terminal and the main control room for dialogue. This feature can also be used to achieve on-site environmental collection for monitoring in the main control room
7, remote control: support for cross-Internet radio, you can control the remote control system in the broadcast function, both in the host to achieve program selection control; can also log in through the management center software host, the timing, partition settings, through the control software can IP addressing of one or more terminal devices, remote setting of power on / off management operations, greatly reducing the maintenance staff workload.
Application of Village - based Network Broadcasting System
1, held a county to the township, county to village, rural to village three radio conference
2, to carry out rural party building, medical new platform, building a harmonious society
3, the prosperity of the rural cultural market, play the farmers loved the event
4, the establishment of rapid breeding, planting and other new channels of scientific and technological information transmission
5, the establishment of a permanent culture, science and technology, education three new countryside platform
6, the construction of city, township flood control three emergency emergency command platform
Fourth, the specific implementation of the project overview
× × County is located in the beautiful scenery, pleasant climate so and so, the county area of 900.3 square kilometers, the total jurisdiction of five towns, 100 natural villages. In recent years, the original rural radio in disrepair, in a fully paralyzed state, leading to local decrees, regional news, weather forecasts, emergency broadcast, rich information can not be released in time, and the growing economic needs and people desperate long-cherished wish is not Coordination, objectively asked to build county, township, village three "village ring" radio network, making the media and local economic development support. Now the county made the following radio construction requirements:
At the same time as the government livelihood projects, in the design of the broadcasting system, need to have advanced, compatibility, stability, scalability, control and economic characteristics.
● Requires the realization of county, township, village three radio network
● to achieve the village ring, to the township, village two, three radio
● Regular news broadcast of central, provincial, district and county radio stations
● to promote local new business
● At any time to the villagers to pass the market and technology to get rich information
● able to spread agriculture-related laws and regulations
● able to build a harmonious society to create a strong atmosphere of cultural public opinion
● can use the existing radio and television "village" network, saving system construction costs
