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Wuxi digital television broadcast trucks and the characteristics of two-Vehicle Systems - broadcast

By: HotBoy


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Of: Wuxi, Jiangsu Province Radio and Television Council Li Gang Shen Wei Gu Zhijun
  TV transmission cars as a mobile, wide range of applications, the core of artistic creation tools complete equipment, undertake rapid and flexible recording, live all kinds of news, social education, sports and variety shows of the task, is the television production sector participation in the program production community an important means of competition. Wuxi Broadcasting and Television Bureau before the two 4-Channel analog component broadcast regular programs of small and medium cars to complete the recording and broadcast live to play a decisive role. However, fewer cars-Channel, can not meet the needs of large coverage, the system configuration simple, outdated equipment and poor reliability. In particular the decline in signal quality cars, live signals and recorded tape has not finished program for use with CCTV, provincial station network and exchange units, at the edge of elimination. Therefore, designed and built more powerful, medium size, equipment, vehicles advanced digital television has become a top priority.

A Planning and Design Rapid development in digital technology today, as TV stations in our project planning, equipment selection process, the full account of the economy and the nature of the compromise, the balance between practicality and scalability, so clear orientation to the system, the overall balance, apply to the allocation, with multi-mission adaptability.

1. Allocation First, consider the source task, the size of the diversity and variety of tasks common situation of the road between destinations, we decided to take 8 + 4 dual-car configuration, rather than create one large broadcast truck. This flexible configuration can satisfy the requirements of major sports events than outside various purposes. In the current situation, major sports broadcasting is increasingly becoming an independent industry, as opposed to TV stations that must be balanced. But such a configuration is also more economical, one-time investment and total investment amount is not large, but also reduce the operating costs (4-Channel Digital broadcast vehicles have to meet a large number of daily production of the program requirements). In addition, adopting such a configuration is also out of domestic vehicles, large-scale broadcast tuner car manufacture considered inexperienced.

2. Body Selection Body size of the volume of construction vehicles should first determine the transmission problem. Taking into account the domestic urban and rural road conditions and many other factors, vehicle design can not be too long, too big. Through extensive research and comprehensive consideration, we decided to broadcast trucks 8-Channel direct attached chamber structure, so that the relatively short length of vehicle, the vehicle height is relatively low, so that vehicles can have a strong mobility. If the box structures with lateral pull, although the interior working space can be extended, but cars will increase high 20cm ~ 30cm, is not conducive to culverts and bridges under the passage, and the balance-board equipment, weight is also difficult to achieve. Finally, we chose the VOLVOFH12 front body and chassis, direct attached, car length 10.5m, total height of 3.75m, width 2.5m, load capacity 18 tons, maximum traction 380 horsepower, exhaust emission standards to meet European standard, the air around the bridge suspension, vehicle has good power, security and stability. 4-Channel broadcast trucks BENZ815D van body, a more lightweight and flexible, can adapt to more bad road conditions and narrow the field.

3. Interior layout

8-Channel broadcast vehicle to retain the traditional car three districts (director district, the audio area and the technical area) layout, we design in the side near the front of the director district, the cabinet horizontally placed so that the body weight is about balance. District director, deputy director set the rear area, equipped with camcorders, hard disk recorders, easy to deputy director and slow motion, special effects, subtitles, staff collaboration and exchanges. Audio was set up in the middle of the body, fully enclosed and sound insulation, equipment, horizontal display. Thanks to a larger size of the mixing console, which designed the audio area cabinet hanging cabinet-style, so that the mixer part of the Wo Yu cabinets below, both reduced the size mixing table, and ensures the audio area of work space In mixer fitted with a glass front, you can see the director zones. Technology area in the rear body, technical supervisor, CCU, VCR, switch host and peripheral equipment cabinets were arranged vertically to facilitate the camera position after the cable outlet. Technology areas have opened cabinet after cabinet compartment access door and down two for maintenance of equipment and technical personnel.

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