University Intelligent Broadcasting Solution

University Intelligent Broadcasting Solution

Part I. General needs The new campus of Baotou Medical College covers an area of ​​1,000 mu, with a planned total construction area of ​​200,000 square meters. According to the actual requirements of the school on the function of the campus intelligent broadcasting system, the campus intelligent broadcasting system is mainly implemented in local broadcasting, combined with the actual drawings. The distance of the farthest area is up to 4000 meters, which is mainly designed and installed on the lamp poles on both sides of the street lamp. Considering the future long-term development needs of the school, our company analyzes the broadcasting system as follows:
1. Campus public broadcasting function. That is, according to the needs of the school, the overall broadcast to the school can be achieved.
2. According to the characteristics of the campus, install audio equipment in the campus square area, stadium road area, lake lawn area, dormitory lawn, canteen area, football field area, test building area, office building area, and West Outer Ring Road area to ensure that Campus volume and sound quality effects.
3. Auto play function. Realize the automatic play of music bells, radio exercises, background music, external signal broadcast news and commonly used music. The main control management computer realizes the automatic switch on and off, and executes the playlist of the day by default, and performs the sequence automatic play to achieve the unattended function.
4. Zone or branch college control function. According to the needs of school broadcasting, the entire campus can be partitioned for management, that is, the entire campus can be played, or a single or multiple area combinations can be played. The function is divided into two parts. The first is to automatically play common areas, single areas, combined areas, and the entire campus; the second is to manually control the single areas, combined areas, and campus at any time according to school needs. Broadcast as a whole (such as announcements, meetings, speeches, etc.).
5. The system has simple equipment, powerful functions, easy installation and maintenance, and good stability. Meet the development needs of the school, and reserve interfaces for school expansion.

The second part of the solution
1. According to the characteristics of the school, we tentatively divide the entire campus into 3 large areas, namely the living area, the teaching area, and the sports area; these three areas are divided into the following 9 communities, namely:
Living area: square area, stadium road area, lake lawn area, dormitory lawn area, canteen area, west outer ring road area,
Teaching area: experimental building area, office building area;
Sports area: football field area;
The above 9 areas. The main control room adopts two 8-way partitions. For future expansion of the school, the 8-way partitions have a cascade function and can be upgraded to 16 partitions, which can be increased at any time according to school needs.
2. Design of main control center: The control system consists of main control computer, communication control card, audio distributor, partition controller, power amplifier, partition control software and automatic broadcast software. Using RS485 bus control mode, long transmission distance, strong anti-interference characteristics. This system is mainly designed in the broadcast center of the gymnasium, and the distance between the broadcast center and each area from the farthest broadcast point is relatively central.
3. Design of speakers in the lake lawn area: Design 16 GM series lawn speakers in the lake lawn road area according to the situation and the distance. Jinmai Video GM series lawn speakers have hundreds of models, generous and beautiful appearance, solid materials, sound quality and sound pressure Stable; each power is 20W; according to the calculation, the actual power is 320W.
4. Design of speakers in the lawn area of ​​the student dormitory building: According to the situation on the site, considering that there are road lawn sections near the student dormitory area, a total of 28 GM-series lawn speakers are designed in the student dormitory area, each with a power of 20W; 560W.
5. Speaker design of the West Outer Ring Road District: According to the situation on the site, consider the empty road section near the West Ring District, and design a total of 14 GM-418 40 / 60W luxury outdoor waterproof and dustproof sound columns in the highway and Yongdao District. GM-418 luxury outdoor waterproof and dustproof column is a column designed specifically for school broadcasting system configuration. Considering that the distance between each column is relatively long, all low-power columns are not selected. The maximum power of the sound column is 60W; according to the calculation, the actual power is 840W.
6. Speaker design of the experimental building area: According to the situation on the site, consider that the vicinity of the experimental building area is an empty road section. A total of 12 GM-418 40 / 60W luxurious outdoor waterproof and dustproof sound columns are designed in the Yongdao area of ​​the experimental building, each with a maximum actual power 60W; according to the calculation, the actual power is 720W.
7. Speaker design of office building area: According to the situation on the site, consider the open road section near the Yongdao area of ​​the experimental building. A total of 12 GM-418 40 / 60W luxury outdoor waterproof and dustproof sound columns are designed in the experimental building area, each with the maximum actual power 60W; according to the calculation, the actual power is 720W.
8. Design of speakers in the canteen area: Consider the open roads near the canteen area according to the site conditions. A total of 12 GM-418 40 / 60W luxury outdoor waterproof and dustproof sound columns are designed in the square 2 area. The maximum actual power of each is 60W; The actual power calculated is 720W.
9. The design of the speakers in the stadium road area is based on the situation and considers that the vicinity of the stadium road area is an empty road section. A total of 10 GM-418 40 / 60W luxury outdoor waterproof and dustproof sound columns are designed in the stadium road area, each with a maximum actual power of 60W ; According to the calculation, the actual power is 600W.
10. Speaker design for football stadium area: a total of 12 GM-418, 40 / 60W waterproof and dustproof sound poles are designed according to the field calculation standard of 400 meters; the maximum actual power of each GM-418 is 60W; consider broadcasting gymnastics and opening sports meets. For independent control and use, set up a secondary control system near the playground stands for control (broadcast cabinets, power amplifiers, DVD broadcast microphones are convenient for independent broadcast activities), and the actual power is 720W according to the calculation.
11. Design of speakers in the square area: According to the on-site calculation, a total of 4 GM-418, 40 / 60W waterproof and dustproof sound columns are designed in the square area, and the maximum actual power of each is 60W; according to the calculation, the actual power is 240W.
12. Amplifier design: Considering the line power loss, the power of the amplifier should be greater than or equal to 1.5 to 2 times the total power of the speaker. According to the principle of the power amplifier, the total design power is 5440W. We design 2 GM-P2000, 2000W and 6 for the school A GM-P1500 (1500W) pure post-stage power amplifier is used to meet the use of background music in the entire campus. A total of 8 pure post-stage power amplifiers; in addition, the main sports ground is designed to be controlled separately when considering broadcast gymnastics and sports games. A GM-P1500 is designed. , 1500W pure post-stage power amplifier to meet the use of the main sports field.
13. Wiring design instructions: Wiring instructions for the broadcasting section of the constant pressure zone:
Wiring method: one wire (audio line) is made for each area bus.
Type of wiring: one power cord: RVV2 * 2.5mm2 sheathed cord.

Part Three Features
1. Automatic playback function-the system is equipped with a music track library that can be used to automatically broadcast software, national anthem, athlete march, preparatory music bell, class music bell, and class after the automatic play software according to the schedule set by the school. Music bell, wake-up number, etc., and other optional radio music and programs in schools such as news and English teaching programs.
2. Scheduling of playlists ---- According to the teaching and management needs of the school, the system can pre-arrange the day and week playlists. The daily playlists can be set arbitrarily, not limited by the time period and length of time. After the computer is turned on every day, the system will automatically judge the day of the week, and then automatically play according to the arranged playlist. Playlists can be stored, modified, and edited.
3. Cycling function ---- After arranging a week's playing schedule, it can be played cyclically throughout the year without resetting every week.
4. Large playback capacity ---- Because it is automatically broadcasted by computer, thousands of ringtone music, various radio exercises, eye exercises, classroom music, various language teaching, English teaching can be used The programs are stored in the computer, forming a sound file material library for selection when arranging playlists, and can also play audio files on the disc.
5. Set the play identifier ---- You can set various play identifiers according to the content of the play, such as the bell for the class, the bell for the class, the inter-class exercise, such as the welcome speech, the thank you speech, the school scenery introduction, etc.
6. Play temporary broadcast ---- The system is divided into manual and automatic modes. If the school has temporary broadcast content to be played, it can end the automatic playback state at any time and enter the manual playback state for playback.
7. Compatible function ---- The automatic broadcasting system can be added to any kind of broadcasting system such as: active broadcasting system, constant pressure broadcasting system, FM broadcasting system, wireless broadcasting system, etc.
8. Partition control function ---- If the system is equipped with a partition controller, the speakers of the playground, corridor and classroom can be controlled to play regularly according to the different contents.

Part IV Equipment List

Part V System Topology

zab 08.12

                                              Size:       295mm×140mm×100mm