What black technologies are there in Beijing Winter Olympics?

The black technology of Beijing Winter Olympics includes carbon dioxide transcritical direct cooling ice making system, sports comprehensive training environment wind tunnel,

The opening ceremony screen integrated intelligent broadcast control system.

1, carbon dioxide transcritical direct cooling ice making system

? Fast ice making and environmental protection.

Carbon dioxide transcritical direct cooling ice-making system is the most advanced, environmentally friendly and efficient ice-making technology in the world. During the Beijing Winter Olympics, this ice-making system will ensure the ice-making work in the National Speed Skating Hall, the Capital Gymnasium and the Wukesong Sports Center.

Carbon dioxide transcritical direct cooling ice-making system has two advantages, one is fast ice-making speed, and the other is the most environmentally friendly ice-making process. In the process of ice making, the system uses modular control unit to divide the ice surface into different areas for ice making, and the ice making effect is fast and uniform.

Taking the National Speed Skating Hall as an example, it only takes1.20,000 square meters to make all the ice surface, and the temperature difference of the ice surface does not exceed plus or minus 0.5℃. The smaller the temperature difference on the ice surface, the better the smoothness and stability of the ice surface, which is more conducive to the athletes to create good results.

Of course, compared with traditional methods such as carbon dioxide and refrigerants, environmental protection is more important. This system not only emits less greenhouse gases, but also improves energy efficiency by more than 20%.

At the same time, the carbon emission is close to zero, because the residual heat energy in the ice making process can be recovered for dehumidification, ice repair and domestic hot water heating in venues. Only the National Speed Skating Hall can save more than two million kWh a year, and the Capital Gymnasium can save more than one million kWh a year, which is truly green and environmentally friendly, completely in line with the green and sustainable concept of hosting the Beijing Winter Olympics.

2, sports comprehensive training environment wind tunnel

? Help athletes find the best posture

As a comprehensive sports training wind tunnel specially built for Beijing Winter Olympics, it can accurately study the influence of wind on competition results. Specifically, through the wind tunnel test, we can adjust and optimize the movement posture, reduce the wind resistance and air resistance during movement, and then improve the sports performance.

For ice and snow projects, it is very important to reduce air resistance. Generally speaking, when the air resistance is reduced by 10%, the athletes' performance will be improved by 1%, and the wind tunnel of sports comprehensive training environment is the best embodiment of scientific guidance training.

First of all, this kind of equipment can create wind with different speeds and simulate the real speed and environment during sports and competitions. The simulated maximum wind speed can reach 42m/s, which is equivalent to 14 typhoon in life. Therefore, the wind tunnel of sports comprehensive training environment can cover all ice and snow events, so it can be widely used for wind tunnel testing of ice and snow competitions.

Secondly, this equipment also has a wind tunnel training system for ice and snow projects, which can test how much wind resistance athletes can bear. During the test, the system can feed back the wind speed, wind resistance, attitude, center of gravity position and test instructions to athletes and coaches in real time through the projector.

Then, through a series of wind tunnel tests and data analysis, find out the movement posture with the least resistance, so that athletes can know what kind of best posture they should maintain in sports.

In addition to optimizing the action posture, this device can also slow down the queuing speed of multiplayer projects; At the same time, it can also evaluate the richness of sportswear and sports equipment, assist the research and development of high-performance sports equipment, and help sports teams and athletes achieve good results to the greatest extent.

3. Opening ceremony screen

Integrated intelligent broadcast control system

The beautiful opening ceremony of the Winter Olympics left a deep impression on many spectators. Huang Jing, director of China 2 1 Century Agenda Management Center, said that the opening ceremony used a series of high and new technologies, such as artificial intelligence, ultra-high-definition rendering, 5G and 8K, to create a magnificent romantic audio-visual feast.

The super-large 8K floor screen in the center of the Bird's Nest consists of more than 40,000 LED modules, covering an area of 10552 square meters. An 8K LED screen with a square meter of 1.200 is also erected on it, and the two screens constitute the world's largest ultra-high definition LED stereoscopic stage.

The screen integrated intelligent broadcast control system presents ultra-high resolution video materials to all modules every second, which not only perfectly displays various image effects, but also integrates digital technology, artificial intelligence motion capture, virtual reality enhancement technology and so on, subverting the traditional stage performance mode.