1. Customer needs A library of a comprehensive university with a construction area of ​​3500 square meters, a total of 6 floors, a floor is: 250 square meters hall, 5 offices, an area of ​​50 square meters; the central control room (firefighting, monitoring, broadcasting system) on the first floor, 4 Staff lounge with an area of ​​50 square meters; 2-3 floors are 5 large reading rooms with an area of ​​650 square meters; the other is 4-6 floors for book collection rooms and reading rooms, 8 on each floor, 350 square meters each There are four staff offices on the first floor, with an area of ​​50 square meters; the corridors of 1-6 floors are about 70 meters long, and the distribution of rooms on each floor is roughly the same. The background music broadcasting system needs to be built in the places involved, the specific requirements are as follows: 1. Automatically broadcast the ring tones for classes every day, without manual supervision, to achieve unattended automatic broadcasting. 2. Zone broadcasting: The system is divided into floors, and the main control room can broadcast to all floors, and can also broadcast to individual floors or combined floors. For example, the 4-story book collection room can record the collection instructions and compile a playlist to play automatically on this floor regularly every day. The large reading room on the 2-3 floors plays the same background music at the same time. 3. Temporary broadcasting: The system can terminate the automatic playback state at any time, switch to manual control, and perform transactional broadcasting such as notification, searching for people, and searching for things. 4. Simultaneous broadcasting of multiple digital sound sources: according to the nature of each layer or the preferences of the audience, different music programs can be played simultaneously on each layer, such as the introduction of the library on the first floor, various precautions, and the background music on the 2nd to 6th layers. Temporary notice, etc. 5. Emergency broadcast: The system needs to be connected with fire signals. When there is a fire alarm, the broadcast will automatically cut in emergency signals to ensure the safety of personnel in the building. 6. The system is required to operate stably, the speakers are beautiful and decent, and the sound quality is clear and clear. 2. Demand analysis and plan design 1. System design: The library installs the broadcasting system mainly to realize the background music and daily affairs broadcast. According to the demand, we design the Jinmai Video Multi-channel Intelligent Partition Background Music Broadcasting System for this book building. In addition to installing public address and broadcasting equipment such as speakers and power amplifiers, according to the characteristics of this building, we add a Jinmai Video 8-channel broadcast control host to the front of the broadcast system. The host can automatically broadcast 8 sets of background music with different content at the same time. Listen to different background music at the same time in different areas. Through the 8-channel broadcast control host background music broadcast software, a large amount of broadcast content that needs to be broadcast daily can be arranged into a playlist in advance and automatically broadcast at regular intervals. 2. Emergency broadcast notification design: The system administrator can end the automatic broadcast state of the software at any time, enter the manual state, play the notification, find someone, or make an emergency broadcast. 3. Zoning design: install a GMTD-8DV intelligent broadcasting zone controller at the front end, divide the 6 areas according to the common area of ​​the floor, design 1 area for the corridor separately, use 7 areas, and 1 area is not used, in the future When upgrading and expanding, it is enough to add the area; the partitioner is usually controlled by the main control software, and it can be manually controlled when performing transactional broadcasting. 4. One-level area design: the stability of the background music system and the quality of the sound quality are mainly determined by the power amplifier and speakers. We design and install high-quality broadcasting equipment. The installation of speakers should consider the characteristics of different regions. The sound shell of the book building requires 50 square meters to design a speaker of about 6W: 5 GM-513 ceiling speakers (6W) installed in 250 square meters of the first floor hall, 5 other offices, 4 The staff lounge has an area of ​​50 square meters. Each room is equipped with a GM-513 ceiling speaker (6W). The first floor office and lounge require a total of 14; a total power of 84W. 5. The second to third floor area design: the second to third floors are 5 large reading rooms with an area of ​​650 square meters. It is considered that the reading room is mainly background music. Each large reading room is designed to install 13 ceiling speakers GM-513 (3W), the five large reading rooms have a total of 65 per floor and a total power of 195W, but each floor needs to play background music separately, and the third floor also needs a separate design of power amplifier. 6. The design of the 4th to 6th floor area: the 4th to 6th floors are the book collection room and the reading room. There are 8 rooms on each floor and 350 square meters each. There are 4 staff offices on each floor with an area of ​​50 square meters. Mainly background music, 7 ceiling speakers GM-513 (3W) are designed and installed in each of the library and reading room, a total of 56 on each floor, 168 on the third floor, the actual power of each floor is 168W, the total power of the three floors is 504W; 4 staff offices with an area of ​​50 square meters, each office design a ceiling speaker GM-513 (6W), a total of 4 on each floor, 12 on the third floor, a total power of 72W, each floor requires separate background music The actual power of each layer is 192W, and each layer needs to design a power amplifier separately. 7. Corridor area design: 1-6 stories are about 70 meters long. According to the standard principle of 100 meters design corridor, put 4 6W ceiling speakers; the library can be equipped with constant pressure ceiling speakers (GM-513) 3, the library needs to design a total of 18 GM-513 ceiling speakers only need to connect to the 6W interface to meet the background music and ringtones of the corridor, and the final actual power is 108W. 8. Volume regulator design: We install a volume controller in each office, and the office and staff can control the volume and switch of the broadcast volume during the break. A total of 21 rooms, design 21 volume adjusters. 9. Fire signal access design: The system needs to connect the fire signal. When there is a fire alarm, the broadcast will automatically cut in the emergency signal to ensure that the library personnel leave safely. We install the corresponding fire broadcast equipment in the main control room to connect the fire broadcast signal. Into the broadcast system, and the fire broadcast has absolute priority. When a fire signal enters, it covers all the broadcast content being broadcast to ensure the safety of personnel and property in the building. 10. 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 * 1.5mm double sheathed cord. 11. Amplifier design: The library requires different areas to listen to different content at the same time, so we must equip each area with corresponding power amplifiers. According to the design principles of scientific broadcasting, in order to make the system operate more stable, the actual power amplifier power should be 1.2-1.5 times the rated power. The following is the configuration table of speakers and power amplifiers on each floor of the building (the points on the 1-6 floors are subject to the design of the plan): 3. Features 1. Multi-channel digital audio broadcast-The system can broadcast 8 sets of digital audio programs at the same time to meet the needs of different floors of the library to listen to different programs at the same time. 2. Multi-channel automatic playback-each channel can be automatically played according to the pre-arranged playlist, scheduled to play, to achieve personalized broadcasting in different areas. 3. Pre-arranged playlists-according to the needs of library broadcasting, each channel can be pre-arranged for one-day and one-week playlists. The playlist of each channel can be set arbitrarily, not limited by the time period and time length. After the arrangement, after the computer is turned on every day, the system will automatically judge the day of the week, and then each channel will automatically play according to the arranged playlist. 4. Weekly cycle function-After each channel arranges a week's play schedule, it can be played throughout the year without resetting every week. 5. Set the playback identifier-each channel can set various playback identifiers according to the playback content, which is convenient for identifying the playback content and calling the playback file. 6. Unattended-the system can be set to automatically turn on and off, automatically identify the day of the week after turning on each day, and then each channel automatically calls the playlist of the day to play, to achieve unattended. 7. Separate broadcast to a specific area-personalized broadcast to a certain area through software control, such as a separate area to broadcast the 1st and 6th areas; each floor plays different background music, etc. 8. Free combination of various areas-through the software settings, you can arbitrarily broadcast a combination of several areas. Such as 1 layer broadcast alone, 2-5 layer combined broadcast, 6 layer separate broadcast. 9. Select area for temporary broadcasting-the system can manually select areas for temporary broadcasting as needed, such as finding people, lost and found, and speech notification. 4. List of system equipment 5. System Topology Made of supreme quality EVA material, water resistant, moisture proofing and dust-proof. First Aid Case,Eva Medical Case,Eva First Aid Case,Eva Stethoscope Case Shenzhen Guohui Craft Products Co.,Ltd. , https://www.evacarrycase.com
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