1. Customer needs:
The school is a newly built high school with 3 grades and 55 classes, distributed on a 7-story teaching building (the corridor length is about 50 meters); 2 5-story student dormitory (the corridor length is about 60 meters), each building 200 dormitories; a 4-storey office building (the corridor length is about 70 meters), a total of 20 offices; a two-storey 1000 square meter canteen; a 1500 square meter gymnasium. A standard 400-meter runway playground. According to the different functional requirements of broadcasting in different regions, the school puts forward the following special requirements.
1. Teaching area:
(1) As a high school, you usually need regular English listening training, especially in the morning and evening self-study time every day. However, the programs listened to in each grade are different, which requires that each grade can listen to their own broadcast content at the same time, and the sound quality effect is required to achieve the listening effect of the college entrance examination.
(2) The broadcast room can broadcast to any classroom individually.
(3) Any English teacher can conduct listening training or exams for several classes taught in the same class.
(4) No matter how the classroom changes, it is possible to perform zone broadcasting for each grade, to achieve listening tests, and to hold parent meetings.
2. Dormitory area:
To facilitate dormitory management, reduce the work intensity of dormitory administrators, and enhance the safety of dormitory. Dormitory broadcasting also needs some special functions.
(1) The management room can call and broadcast to a certain dormitory independently without disturbing other dormitory.
(2) The management room can perform any group broadcasting and calling of each dormitory.
(3) The management room can call any of these rooms arbitrarily, and the personnel in the room can answer the intercom at the same time to confirm the call information.
(4) The management room can monitor any dormitory in real time to grasp the rest of the students.
(5) The dormitory management room can automatically receive the broadcast program broadcast in the main control room, and can manually end the reception of the broadcast program in the main control room to independently broadcast the dormitory.
3. Gymnasium, playground, canteen area
(1) It can automatically receive the broadcast program broadcasted in the main control room, and can manually end the reception of the broadcast program in the main control room. When there is an activity, it can be separated from the control of the main control room for independent broadcast.
(2) Zone broadcasting or unified broadcasting can be performed on different floors.
4. Basic functions
(1) The entire campus broadcasting system is a whole, and can be broadcast uniformly throughout the school.
(2) If there are special events, independent broadcasts can be conducted in different areas.
(3) Music ringtones, background music, eye exercises, flag-raising national anthem and other common programs can be played automatically and regularly, without the need for special staff.
(4) Schools can independently record and edit audio files and add them to the broadcast host for automatic timing playback.
(5) The broadcast room requires that emergency broadcasts can be conducted when there is an emergency, such as fire, major accidents, power outages, etc.
Please design a plan and list the equipment.
2. Demand analysis:
1. Classroom area
(1) According to the requirements of the teaching area for different grades to listen to different programs at the same time, the classroom design adopts the FM broadcast method. The system can play more than 60 sets of programs at the same time. When the school wants to expand the programs that are being played at the same time, there is no need to rewire, just add The front-end equipment is sufficient, so the FM broadcasting system is adopted, and the front-end program source is easy to expand, which can meet the increasing voice teaching needs of the school. At the same time, more than 60 sets of programs can be received at the classroom side, and each class can choose to listen to different programs according to their needs. We design and install 6-channel professional broadcast host for the school. The host can broadcast 6 sets of digital programs at the same time, and can add as many sets of analog audio sources as necessary, such as deck, DVD, tuner, etc. The host comes with audio recording and editing software. The administrator can record and edit audio files by himself, store them in the hard disk, and set up automatic playback through the playback software.
(2) The school requires that the broadcast room can broadcast individually to any classroom, that is, the broadcast system needs to be addressable, using the GMTD-FM addressable FM broadcast system of Jinmai Videoconferencing, which has multi-channel playback and addressability. Play, auto-play, full channel reception, full-function remote control and other functions. Install a GMTD-FM addressable FM speaker in each classroom of the 55 classes in the teaching area, and at the same time realize free group broadcasting.
2. Dormitory area
According to the requirements of the school, the dormitory building uses a fixed-pressure addressable intercom broadcast system. Each dormitory is equipped with a GMTD-JXZQ addressable intercom controller and a suitable speaker to achieve the following effects
(1) Calling and broadcasting to a certain dormitory alone does not interfere with other dormitory. For example, notice to a dormitory, broadcast a program separately, etc.
(2) Group broadcasting and calling for each dormitory. If grouped according to grades, software can be used to broadcast to each grade. The software grouping can be adjusted at any time. When the dormitory is changed every year, the group of each broadcast point can be adjusted.
(3) Intercom function. The management room calls any of these rooms arbitrarily, and allows the other party to talk at the same time to confirm receipt of the call information. For example, parents come to find the student, the management room calls the student ’s dormitory, and the dormitory can talk to each other to determine whether the student is in the dormitory.
(4) Monitor function. The management room can monitor any dormitory in real time at any time to grasp the rest of the students.
3. Gymnasium, playground, canteen area
Gymnasiums, playgrounds, and cafeterias need to have broadcasts and can be broadcast separately. The design uses Jinmai Video Intelligence Intelligent District Constant Pressure Broadcasting System, and separate power amplifiers and microphones for each area.
4. Office and corridor area
Offices and corridor areas generally only listen to some basic programs such as background music, class bells, etc., so only need to install constant pressure speakers. The office is where the teacher works, and sometimes it can't be interfered by the broadcast, so we install a volume switch in the office. The teacher can control the speaker volume or switch in the office during meetings or work.
5. Design of speakers in the broadcasting scheme:
(1) Inside the classroom: GMTD-FM addressable FM speakers, one in each classroom, a total of 55. 50 meters in the corridor of the teaching building, it is sufficient to install two 10W wall-mounted speakers on each floor. A total of 14 speakers are required on the 7 floors. The total power of the teaching corridor area is 140W.
(2) Office building area: The office building is 70 meters high, and two 10W wall-mounted speakers can be installed on each floor. There are 8 on 4 floors and 80W power is required. Each office installs a 3W wall-mounted speaker, 20 offices need 20 speakers, the power is 60W. The total power in the office area is 40W.
(3) Dormitory area: The dormitory corridor is 60 meters long, and only two 10W wall-mounted speakers need to be installed on each floor. There are 10 floors on 5 floors, requiring 100W of power. A 3W wall-mounted speaker is installed in each dormitory. 200 dormitory requires 200 speakers with a power of 600W. The total power of the dormitory area is 700W.
(4) Playground: The playground is a standard playground with a 400-meter runway. It is sufficient to install four 60W outdoor sound columns. The power of the playground area is: 240W.
(5) Gymnasium: A 1500-square-meter gymnasium is usually used to hold school meetings and perform programs. It is enough to install 6 30W indoor speakers. The power is 180W.
(6) A 2-storey 1000 square meter canteen, each floor is equipped with four 30W indoor sound poles. The power is 240W.
(7) The canteen, gymnasium, and dormitory area need to have independent broadcasts, and need to receive multiple sets of programs broadcast in the main control room. Therefore, we install a GMTD-FM8A FM speaker in the control room of these areas. This speaker has an audio output interface. Connect this speaker to the power amplifier in each area to choose to listen to multiple programs broadcast in the main control room. Play to constant pressure speakers in various areas.
(8) Emergency broadcasting is required in the broadcasting room. The control host in the broadcasting room can be manually switched at any time to play emergency and temporary broadcasts. The classroom-side FM broadcasting section is equipped with an audio inserter. When an emergency occurs, the inserter will be used The emergency broadcast signal is forcibly inserted into all channels, and a UPS power supply is equipped in the broadcast room with a delay of half an hour to ensure that emergency broadcasts can be carried out in the event of a power failure.
3. The main functions that the system can realize:
Main functions of classroom area
Multi-channel stereo playback, partition playback, power management, full channel reception, music ringtone, vice president control
Multi-channel digital broadcasting, fixed-point broadcasting, authorized management, full-function remote-control listening test, emergency broadcasting
Multi-channel FM playback, regular playback, shared cable transmission, PLL, lock item loop, stable frequency, background music, pre-arranged playlist
Unattended playback monitoring LED frequency display Multilingual teaching audio insertion
Main functions of dormitory area
Partially play music ringtones fixed-point playback call intercom real-time monitoring regular playback
Background music pre-arranged playlist
Main function of corridor and area
Partially play music ringtones regularly play background music pre-arranged playlist unattended
Main functions of stadium and cafeteria
Partially play music ringtones regularly play background music pre-arranged playlist unattended independent broadcast
4. List of system equipment:
Campus broadcast equipment list Teaching area equipment Item Specification Quantity Unit Main control system GMTD-FM control host, six-way professional sound card, main control software, automatic broadcast software, music library file. 1 set of intelligent partition controller GMTD-8DV (8-channel intelligent partition) 1 set of regulated power supply 5000VA 1 set of audio modulator PBI-3000FM (one set for each program) 6 sets of mixer in the United States PBI-4016C 1 set of combined 1 mic BK-240 professional conference mic for GM-8260A (260W) teaching building corridor for analog power amplifier 1 analog program source deck, CD player, DVD player, AM / FM tuner, etc. The user purchases 3 sets according to actual needs FM FM speaker GMTD-FM FM addressable speaker, full channel reception, remote control 55 wall-mounted speakers GM-356 (3W / 6W) teaching building corridor 14 cabinets standard 1.8 meters 1 dormitory building equipment X2 common configuration of main control computer 1 master control software GMTD-BCX6.0 addressing intercom broadcasting control software 1 set of communication controller GMTD-RS 1 active speaker receiving dormitory return sound and monitoring 1 FM speaker GMTD-FM 8A (with audio Output interface) 1 intelligent partition controller GMTD-8DV 1 broadcast microphone BK-240 professional conference microphone 1 preamplifier GM-8601A 1 pure post-stage constant voltage power amplifier GM-1000P (1000W) 1 set Voltage power supply 5000VA 1 addressable intercom controller GMTD-JXZQ remote addressable intercom controller (one per dorm) 200 wall-mounted speakers GM-356 (3W / 6W) 210 canteen equipment for dorms and corridors Intelligent zoning controller GMTD-8DV 1 stabilized power supply 5000VA 1 combined constant voltage amplifier GM-8260A (260W) 1 FM speaker GMTD-FM 8A (with audio output interface) 1 microphone BK-240 professional conference microphone 1 It only simulates the program source deck, CD player, DVD player, AM / FM tuner, etc. The user purchases 1 indoor sound column GM-506 (30W) according to the actual needs, 8 gym equipment power supply 5000VA, 1 combined fixed Pressure amplifier GM-8260A (260W) 1 FM speaker GMTD-FM 8A (with audio output interface) 1 microphone BK-240 professional conference microphone 1 analog program source deck, CD player, DVD player, AM / FM tuner According to the actual needs, the user buys 1 indoor sound column GM-506 (30W) 6 office building equipment combined constant voltage amplifier GM-8260A (260W) 1 FM speaker GMTD-FM 8A (with audio output interface) 1 Mike B K-240 professional conference microphone 1 analog program source deck, CD player, DVD player, AM / FM tuner, etc. The user chooses 1 wall-mounted speaker GM-356 (3W / 6W) 24 playground equipment according to actual needs Type constant voltage amplifier GM-8260A (260W) 1 set of microphone BK-240 professional conference microphone 1 analog program source deck, CD player, DVD player, AM / FM tuner, etc., the user chooses 1 outdoor audio according to actual needs GM-418 (40W) 4 pcs5. Topology diagram of broadcasting system:
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