China's network technology on February 18, the world's attention of the Beijing Winter Olympics has entered the final climax stage, and throughout the event from the preparation to the start of the process, everywhere revealed a full range of science and technology. "Science and technology Winter Olympics" is not just a slogan, it can be said that this Winter Olympics "black technology" is full!
The construction of the stadium has been upgraded, and the Winter Olympics has created a smart venue
The National Speed Skating Hall "Ice Ribbon" is the iconic venue in the main beijing area of the 2022 Beijing Winter Olympics and the only newly built ice competition venue.
Image source: Visual China
During the construction process, the "Ice Ribbon" used a number of "black technologies". First of all, according to the data, the construction application of "ice ribbon" is based on the intelligent construction technology of BIM (Building Information Model), which saves the construction period of the main structure by 2 months and reduces the use of steel by 2800 tons. In addition, through the establishment of a digital twin and intelligent integrated management platform, the "Ice Ribbon" also realizes the comprehensive intelligent management of venue operation data collection, trend analysis, early warning and analysis and decision-making.
In the operation of the event, the "Ice Ribbon" and the Bird's Nest also deployed the "Intelligent Wizard" application. According to reports, this intelligent application comes from the indoor visual positioning and navigation system developed by Megvii. Users only need to open the AR navigation application, just use the camera to point at the surrounding environment, select the destination to go, the system can directly obtain the current location of the positioning information, and the path to the destination navigation, in the AR real scene superimposed route, road signs, arrows under the guidance, to help users easily find the destination.
It is understood that compared with other indoor positioning technologies, the indoor visual positioning technology developed by Megvii has the characteristics of high precision and easy deployment, without the need for secondary transformation of the indoor building environment, only the use of laser visual map acquisition equipment for the existing environment collection, you can achieve positioning functions, with considerable cost advantages. It is convenient for users to quickly navigate inside the venue, eliminating many troubles such as not recognizing the road and going around in circles.
Abandoning the tactics of the sea of people, the opening ceremony was beautiful
The opening ceremony of the Beijing Winter Olympics can be said to be amazing, "the five Olympic rings that broke the ice", "the waterfall that poured down", "the changing quicksand that followed the footsteps of the actors"... Every scene of the opening ceremony was impressive.
It is worth noting that compared with the opening ceremony of the 2008 Summer Olympics in Beijing 14 years ago, this time the "Bird's Nest" did not use the "sea of people tactics", and the total number of actors dropped from 15,000 to 3,000. Zhang Yimou, the general director of the opening ceremony, said in an interview with the media: "We must use the content of science and technology to make it small and not empty, make it very full, and make it ethereal and romantic."
The reality is also true, to achieve the perfect effect of the whole show, behind it is inseparable from a lot of scientific and technological innovation.
For example, the opening ceremony used an 8K ground screen. According to the information, this is currently the world's largest LED floor screen, with an area of 10,552 square meters. The technical team behind boe adopts multiple 8K+ resolution picture fusion technology, as well as optical correction algorithms. The result is a 100,000:1 ultra-high contrast ratio, 3840Hz ultra-high refresh rate, and 29900x15096 ultra-high resolution ultra-high resolution ultra-high-definition brilliant picture.
In the opening ceremony of the "Snowflake" program, the real-time capture and interaction system can capture the real-time position and posture of the actors, and render the corresponding artistic effects, so that the audience can more intuitively feel the natural and flexible performance method.
Chang Yu, director of the Opening and Closing Ceremony Of the Beijing 2022 Winter Olympics, said in an interview with CCTV: In fact, we feel that in this era, it is precisely because our country's science and technology has progressed and developed, so that we can use only 3,000 actors in such a large space as the Bird's Nest, and we can also cooperate with other scientific and technological means to make this opening ceremony very rich.
Science and technology have strength, and epidemic prevention is guaranteed
As a global event, safety and health have always been the top priority of all Olympic participants. In order to minimize the risk of the new crown epidemic, the Winter Olympics have used a series of scientific and technological means to achieve closed-loop management of the entire event.
Among them, there is the wisdom of AI technology, and the use of artificial intelligence technology to build a defense line against the epidemic of science and technology. According to reports, for example, the "interval intelligent epidemic prevention system" created by Megvii can realize rapid non-sensory temperature and health verification functions, increase the detection speed of epidemic prevention information from the minute level to the second level, and comprehensively help the scientific epidemic prevention in the closed-loop area.
In terms of intelligent temperature measurement, Megvii's Mingji temperature measurement system has been deployed in Wukesong Stadium and Capital Gymnasium. It is understood that the system can achieve multiple people at the same time temperature measurement, the farthest support 4 meters away from the non-contact non-sensory temperature passage, only a small number of staff can complete a large number of personnel temperature checks, in a significant increase in detection efficiency at the same time, but also reduce the risk of cross infection.
In addition, the Winter Olympics are also equipped with full-time disinfection robots, which can adaptively identify the shape of objects, independently plan disinfection trajectories, and achieve efficient and accurate killing.
High-quality event broadcasting, 4K/8K technology allows the audience to be immersed
Due to the needs of epidemic prevention and control, many spectators could not come to the scene to watch the wonderful performances of the athletes on the field. In the past, everyone may have been a little lost, but now 4K/8K broadcast technology is fully involved, and strives to deliver the most realistic live pictures to the screens of thousands of households.
According to reports, 8K is by far the closest to the "human eye real" ultra-high-definition technology, the resolution is 16 times that of the 2K display, and at the same time, it has also made a full-dimensional improvement in quantification, frame rate, color gamut, etc., giving the audience an "immersive" viewing experience.
In addition, it is understood that as the main broadcaster of the event, CCTV also officially launched an AI sign language anchor, ai sign language anchor can not only report the news, but also can carry out live broadcast of the event sign language, through body movements, expressions, fingers and other actions for sign language broadcasting, convenient for people with disabilities to watch the event report.
The quality of the game does not depend on people alone, the cheetah system "out of the circle"
"'Thanks cheetah' let the foul have nowhere to escape", this is a hot comment from netizens. In the men's 1000m final of short track speed skating at the Winter Olympics on February 7, there were many collisions and accidents between the participants. In the end, the referee looked back at the video system and decided that The Chinese player Ren Ziwei had won the championship. The cheetah system is hot "out of the loop".
What is a "cheetah"? According to the data, it is a "super high-speed 4K orbital camera system" independently developed by the Central Radio and Television Corporation for 5 years, which is specially used for the broadcast of the speed skating events of the Winter Olympics. It can move at a speed of 25 meters per second, which is equivalent to about 90 kilometers per hour, and can flexibly and randomly capture various scenes in speed skating competitions, helping the referee to provide more playback material for some controversial penalties in the event and improve the accuracy of penalties.
In recent years, more and more technology applications have been invested in game penalties, such as the Eagle Eye system in the tennis arena, which can accurately determine the landing point of the tennis ball and whether it is out of bounds; in the football field, the newly added VAR system helps the referee clearly play back the dispute and penalty.
With the development and progress of science and technology of the times, there is not only a competition between athletes on the field, but also a demonstration of the power of science and technology.
Training guarantees innovation and improves the level of competition
Due to the severe summer heat and many restrictions such as venue factors, it is difficult to ensure that athletes can be in a good training environment all year round. To this end, a series of technological innovations have "faced difficulties" to help athletes overcome practical disadvantages and improve the level of competition through scientific training.
For example, according to CCTV News, the Laiyuan National Ski Jumping Scientific Research and Training Base in Baoding, Hebei Province, has built the world's largest and China's first ski jumping wind tunnel laboratory. Athletes can be trained here from skidding, jumping to leaping.
According to media reports, the wind tunnel laboratory can train athletes at a horizontal, 11-degree angle and 32-degree angle to measure the resistance of the skid stage, the force of the left and right feet at the moment of jumping and the uniformity of the ground force of the feet, and exercise the athletes' ability to maintain the best posture in the air and the balance of driving the snowboard flight. Basically, once a day training sessions, four hours of training, equivalent to a week of training for athletes, the efficiency is very high.
"Black technology" blessing, rest is better
The winter Olympic games have a high level of competition and a long interval between competition spans, how to ensure that athletes get a good rest in the Winter Olympic Village and maintain a high competitive state. To this end, many "black technologies" are applied to them.
According to the China News Network, in the athletes' apartments, each apartment is equipped with an independent air conditioning system and fresh air system, which can provide fresh air for the room even if the window is not opened. In addition, more than ten functions such as intelligent temperature regulation system, intelligent infrared induction, and video intercom can be uniformly operated through the room controller.
In addition, according to the introduction of this apartment is also equipped with a smart bed, smart bed is powerful, only need to be set to the appropriate sleeping angle through remote control, memory cotton and smart sensors in the mattress can provide massage and other services for athletes. If the sleeping position is uncomfortable and the athlete snores, the smart bed can also help adjust the height of the head to alleviate it, which is also the first time that the "smart bed" has been equipped in previous Winter Olympics.
Low-carbon environmental protection, green Winter Olympics
Under the consensus of global carbon neutrality, this Winter Olympic Games is also adhering to the concept of "green Winter Olympics".
At the venue, the carbon dioxide transcritical direct cold ice making technology enabled by the "ice ribbon" this time. It is understood that compared with the traditional refrigeration method, the energy efficiency of ice making can be increased by 30%, and the researchers have calculated that the carbon dioxide ice system can save about 1.8 million kWh of electricity per year.
In terms of transportation, the use of hydrogen fuel cell vehicles has become one of the highlights of this Winter Olympics. According to reports, during the Winter Olympics, 212 "100% domestic" hydrogen fuel cell buses provide hydrogenation services through 5 "100% green hydrogen" hydrogen refueling stations, which is expected to achieve a fuel saving benefit of 0.28 liters per kilometer per vehicle, with a total fuel saving of about 9.6 tons, and achieve a carbon reduction benefit of 0.75 kilograms per kilometer per vehicle, with a total carbon emission reduction of about 30 tons.
Schematic / Image source: Visual China
In addition, the Winter Olympics also implemented the Zhangbei flexible DC power grid project, which imported green electricity produced by wind energy and solar energy in Zhangbei into Beijing. During the event, 26 venues in the three major competition areas of the Beijing Winter Olympic Games will achieve 100% green electricity supply.
In addition to the athletes' competitions continue to set new records, the technological competition inside and outside the arena also brings surprises to the audience. At this time, although the ice and snow event is about to draw a rest, the Winter Olympic Science and Technology Competition has just begun...