Shulou(Shulou.com)06/02 Report--

Scheme of Campus IP Network Broadcasting system

Http://www.bjhxkt.com 010-82565576 Beijing Star Ketong Technology Development Co., Ltd.

Overview of Campus IP Network Broadcasting system

Campus IP network broadcasting system is a new generation of interactive public broadcasting system based on the widely used TCP/IP communication network. The system adopts distributed server architecture, the capacity can be continuously expanded according to the needs, and can be run in the local area network or wide area network. The whole emergency broadcasting system adopts the system platform of Bramp S framework and Chammer S framework, adopts WEB management and control, which is convenient and fast, and adopts the form of client to carry on the playback control interface, which is more humanized and operable. Completely separate management from control, separate broadcast control from setting management, and make technical operation and broadcasting operation more concise and easy to operate.

II. Schematic diagram of campus IP network broadcasting system

Third, the function of campus IP network broadcast system

Maintain order: the bugle can be broadcast regularly and automatically to maintain the training and life order of officers and soldiers, such as getting up, gathering, dining, rest, lights out, etc. (note: the bugle player can store hundreds of bugle ringtones and song files. In addition, it can be plugged into a flash drive to play)

Background music: during the break, you can broadcast news, broadcast military songs, etc., effectively alleviate the training and life pressure of officers and soldiers, and create an active campus time and space.

Unified broadcasting: unified collective broadcasting, all speakers play the same program, so that the campus can carry out collective broadcasting, unified lectures, convey the instructions of the head, and so on.

Zonal broadcast: there is no dead corner coverage broadcast for each area of the barracks, and zonal broadcasting can be realized.

Emergency broadcast: a collection of emergency broadcasts for any company, used for daily military training, sermons, broadcasts, etc.

Interactive on-demand: instructors can order audio stored on a webcast server.

Intelligent management: can automatically turn on the power of the equipment at a fixed time, automatically turn off the power of the equipment at the end of playback, and automatically manage and save electricity.

L safe backup: the main power amplifier and standby power amplifier can be switched automatically to ensure the normal operation of the campus broadcasting system.

All-weather work: loudspeaker all-weather work, using outdoor waterproof aluminum alloy shell, rain-proof, dustproof, insect-proof, with small treble loudspeaker to ensure that military songs are loud and powerful.

IV. Technical advantages of campus IP network broadcasting system

Star Science and Technology IP network broadcast system covers all the functions of the traditional campus broadcast system. And realize the function of audio-on-demand. And make full use of the resources of the campus network, you can access the audio resources on the network anytime and anywhere. Because each terminal has an independent IP address, any terminal can be controlled to play different programs.

Program sources are unlimited: countless high-quality digital voice files can be stored on the storage media of each computer. In the IP network broadcasting system, in addition to real-time gathering and broadcasting all kinds of analog audio sources (such as microphone, card holder, CD, tuner) through the sound cards of each computer, multiple digital voice files can be started at the same time to play programs.

Transmission distance and coverage area are not limited: IP network broadcasting system is based on digital IP network transmission, its signal will not attenuate with the extension of transmission distance, nor will it be disturbed by the electrical characteristics of the transmission environment, the whole transmission process can be guaranteed to be carried out without damage. Relying on the existing IP network coverage environment and network bandwidth quality, the coverage of IP network broadcasting system can easily break the regional limitations of traditional broadcasting system. Metropolitan area network and wide area network can become the transmission carrier of IP network broadcasting system.

It can form a powerful internal command and dispatching center system: it can realize the function of two-way intercom, and each intercom terminal can talk to each other. The paging call function can be realized, and the paging intercom terminal can realize the call call function to other single or multiple terminals. Can achieve emergency broadcasting (emergency broadcast), in case of danger and difficulty, you can use our one-click intercom terminal to quickly contact the broadcast center and get help.

Realization of peer-to-peer personalized programs: based on the IP data network, each network broadcast terminal has an independent IP address, which can independently accept the programs played by the server, and can independently control each terminal to play different content (for example, 200 terminals in the network play 200 different programs at the same time), thus completely realizing peer-to-peer personalized programs.

Sound quality is good:

Fine sound source: the sound quality of the digital sound source is much higher than that of the analog sound source (because no matter how fine the cassette is done, the sound quality can not reach the CD effect); the whole process of digitization provides high fidelity sound quality, using CD quality data file format, which is completely consistent with computer output; it can also play high bit rate sound quality files at 320bit speed. Occasions that meet the higher requirements for sound quality are no longer bothered by ambiguous sounds.

Strong anti-interference: the transmission of IP network broadcasting system is based on digital IP network, which is not affected by external environment and transmission distance, and the signal has no attenuation and interference, which can basically ensure the lossless transmission of data.

Higher reliability: the unstable factors of campus broadcasting system mainly depend on the quality of transmission lines, unreasonable transmission lines or cause instability or even burn out high-power constant-voltage power amplifiers. Pure digital broadcasting system with the help of mature Ethernet communication technology, each terminal device is equivalent to a simple computer connected to the campus network. Users only need to ensure the smooth flow of the network, no need to add other maintenance.

Change the broadcasting system from one-way broadcast to two-way interaction: the transmission platform of IP network broadcasting system itself has two-way characteristics, and due to the introduction of microprocessor, intelligent chip and embedded program, the intelligence of the terminal equipment of IP network broadcasting system is far from comparable to that of the traditional public broadcasting system. The IP webcast system has transformed an one-way broadcasting system into a real two-way interactive system.

Through the computer software for the control and management of the broadcasting system, users can use the computer to use the broadcasting system remotely: the management and control of the Star Ketong IP network broadcast system is all carried out through computer software, and can be managed remotely through the IP network, including scheduled playback, automatic startup, fault detection, program playback, resource library management, user management and authorization, broadcast node management and setup, and so on. IP network broadcasting system can achieve the true sense of unmanned duty.

Audio reinforcement of training venues and exercise areas: the broadcast terminal control panel of stadiums and stadiums can be inserted into the broadcast microphone and played by local speakers. When there is no broadcast signal, it can be used for local sound reinforcement. It can also be input from computer, DVD, MP3 and other sound sources. It is used for teachers to use sound source equipment or microphone local loudspeaker when teaching. The terminal can automatically switch the power supply of the power amplifier speaker according to the presence or absence of the voice signal.

Change the physical line partition to logical IP address grouping, the partition can be fine to each broadcast point, and the network broadcasting system is easy to smoothly expand and transform: in the IP network broadcasting system, each broadcast information point is identified by logical concept (IP address). When the application requirements of the broadcasting system change, the administrator only needs to arrange these logical IP addresses in groups without any physical changes. The node change of IP network broadcast will not affect other broadcast nodes, the system can be smoothly modified and expanded, and can be connected and combined wherever there is a network.

Multi-branch offices can jointly and autonomously control the use of the broadcast system: multi-branch offices can control and manage the broadcast system. In any organization, it can operate remotely and broadcast multiple agency radio programs at the same time; the headquarters can control the broadcasting of the operation division, and the division can also control and operate the broadcasting of the headquarter, and at the same time, each organization can independently control and manage, broadcast its own broadcast programs separately.

Broadcast monitoring function: the system can set up any network terminal as the system monitoring to achieve a single point of selection monitoring function, to achieve the computer room or leaders of each point of real-time monitoring.

Fifth, the design of campus IP network broadcast system.

1. IP Network Broadcasting main Control Center

The main control center of IP network broadcasting system is built, which is composed of audio acquisition workstation, broadcast control workstation, user management workstation, audio server, VOD server, access server, terminal server, relay server, forwarding server and so on.

The headquarters multi-broadcast program source is composed of DVD/VCD, card holder, digital tuner, broadcast microphone and network broadcast server. the broadcast digital program is transmitted to the receiving terminal through the existing or under construction TCP/IP (including LAN, WAN, INTERNET) network. The DVD/VCD, the card seat and the digital tuner can be played by the system timer, and the network broadcast control server has built-in automatic playback engine. It can automatically point, partition or unify the receiving terminal and other broadcast programs according to the pre-set timing playlist. The network broadcast server can automatically manage the switch of any terminal broadcast equipment through the timing playback engine.

Through the paging microphone, any broadcast terminal, such as partition, can be paged and broadcast, and the two-way terminal can support on-demand to provide storage audio playback.

2. Second-level branch control center (competent department at all levels)

The academic Affairs Office, the propaganda Department of the Youth League Committee and other departments can call the microphone through the touch screen network, or in the sub-control system platform to realize the distributed control and management of campus IP network broadcasting.

As the campus IP network broadcast system is based on TCP/IP architecture, so audio collection, playback management, remote calls can be achieved network distribution, without geographical restrictions.

3. Three-level branch control center

An IP network calling microphone is set up in the dormitory management room, which is used to insert and control the broadcast terminals in the area under its jurisdiction.

2. Campus IP network broadcast transmission part:

The broadcast room, the branch control and the receiving terminal are connected by campus LAN, WAN or INTERNET network, and the audio signal and control signal are transmitted in both directions through the TCP/IP protocol in the digital format. At present, the transmission requirement of the campus IP network broadcasting system is the bandwidth 128Kbps. The construction of the campus network in our country basically meets the requirements of the 10M/100M network, which can fully meet the requirements of the transmission rate of the campus IP network broadcasting, and can ensure the reliable and stable broadcast signal and clear voice signal.

3. The receiving part of campus IP network broadcast:

There are two ways to receive the campus IP network broadcast of Star Science and Technology.

One is to listen directly with IP radio speakers (indoor IP speakers, IP radio speakers, IP ceiling speakers) for playing in classrooms, outdoor public areas, canteens, dormitories, etc.

Second, through the network broadcast controller output audio and control signals, access to the campus of the original constant pressure broadcasting system, to achieve seamless connection between the network broadcast and the original broadcasting system, can be used in stadiums, stadiums and other places.

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