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University campus network broadcast solutions

Number of visits: Date:2016-09-19 17:30

The first part overview demand
 The university campus covers an area of 1000 acres, planning a total construction area of 200 thousand square meters, according to the school on the campus intelligent broadcast system function requirement, campus intelligent broadcast system is implemented on local radio, combined with the actual drawing inspection results, the far field distance of 4000 meters, is mainly designed and installed in the street on both sides of the lamp stand, taking into account the long-term development after school we need for the broadcasting system analysis is as follows:
 1, the campus public broadcasting function. That is, according to the needs of the school, you can achieve the overall broadcast of the school.
 2, according to the characteristics of the campus, in the school campus plaza area, Stadium Road area, Lake lawn area, dormitory, canteen, turf football field test area, floor area, office area, West Ring Road area to install audio equipment, ensure the volume and acoustics of the campus.
 3, automatic playback function. The realization of the upper and lower music bell, broadcast exercises, background music, the external signal broadcast news and the use of music automatically. Master control computer to achieve automatic switching machine, the default implementation of the day of the playlist, the order of automatic play, to achieve the function of no one's duty.
 4, partition or division control function. According to the needs of the school broadcast, the entire campus partition management, that can be achieved on the campus of the whole play, but also can be achieved on a single or a combination of regional play. The function is divided into two parts, one is the commonly used music achieved on a single region, region, and the overall combination of campus play automatically; second according to the school needs, ready for manual control of a single region, region, and combination of overall campus broadcasting (such as notices, meetings, speeches etc.).
 5, the system equipment is simple, powerful, easy installation and maintenance, good stability. Meet the needs of the development of the school, for the expansion of the school reserve interface.
 The second part solution
 1 according to the characteristics of the school, we tentatively put the whole campus is divided into 3 major areas, namely, living area, teaching area, sports area; these 3 areas are divided into the following 9 areas, respectively:
 Living area: square area, Stadium Road area, Lake lawn area, dormitory lawn area, dining area, West Outer Ring Road area,
 Teaching area: experimental area, office area;
 Sports area: football field;
 Above 9 area. The main control room with 2 sets of eight road partition, in order to expand the school later, the eight partition has a cascade function, you can upgrade to the 16 partition, according to the needs of the school can be increased at any time.
 2 the design of the main control center: the control system is composed of the main control computer, the communication control card, the audio distributor, the partition controller, the power amplifier, the partition control software and the automatic broadcast software. Using RS485 bus control mode, the transmission distance is far, the characteristics of strong anti-interference. This system is mainly designed in the broadcast center of the stadium, the broadcast center and the distance from the farthest point of the region are more central.
 The 3 speaker design Lake lawn area: according to the site and see the distance in Lake corridor area design 16 lawn lawn lawn speakers, Abk speakers have hundreds of other, generous and beautiful appearance, strong material, sound pressure is stable; the power of each 20W; according to the actual power accounting for 320W.
 4 student dormitory building lawn area speaker design: according to see the scene, considering the road sections near the dormitory area of the lawn, lawn 28 speakers were designed in a student dormitory area, the power of each 20W; according to the actual power accounting for 560W.
 Speaker design 5 West Outer Ring Road area: according to the site conditions, considering the western district near the open road belongs to the design of a total of 14, only outdoor waterproof and dustproof sound column on the road, the corridor area, outdoor waterproof and dustproof sound column is a specific school broadcasting system, a configuration design using the sound column, considering the distance between each column are far, all did not use a small power sound column, this column the maximum power of 60W; according to the actual power accounting for 840W.
 6 experimental area speaker design: according to watch the scene, considering the experimental area near the open section belongs to the design of a total of 12, only outdoor waterproof and dustproof column in the laboratory building corridor area, each maximum actual power of 60W; according to the actual power accounting for 720W.
 The 7 box office area design: according to see the scene, considering the experimental building area belongs to the empty corridor near the road, designed 12 sound column in the experimental area, each maximum actual power of 60W; according to the actual power accounting for 720W.
 The speaker design 8 areas: according to the site to see the canteen canteen near the open road to consider, in a total of 2 districts of 12 square design of waterproof and dustproof sound column, each maximum actual power of 60W; according to the actual power accounting for 720W.
 9 Stadium Road District speaker design according to see the scene, considered near the Stadium Road area belongs to the open road, a total of 10 column in the design of the Stadium Road area, each maximum actual power of 60W; according to the actual power accounting for 600W.
 10 football field speaker design: according to the field calculation standard of 400 meters playground area designed 12 sound columns; each actual maximum power is 60W; consider the broadcast gymnastics and sports meeting time to use a separate control, sub control system is arranged in the playground near the stands to control (radio cabinet, power amplifier, DVD radio convenient independent broadcast activities when using the microphone), according to the actual power accounting for 720W.
 11 square speaker design: according to the site to see the design of the square area of a total of 4 waterproof and dustproof sound column, each maximum actual power of 60W; in accordance with the actual power of 240W.
 12 power amplifier design: taking into account the line power loss, power amplifier should be greater than

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