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According to USA News Today Headlines Since the opening ceremony of the Beijing Winter Olympics, we have seen a variety of scientific and technological achievements such as artificial intelligence (AI), 5G, AR, naked-eye 3D and cloud bring shocking experience to the audience.

5G

Now, with the Winter Olympics going on, the blind boxes for various technical applications have also been fully opened, reflecting technological improvements in venue infrastructure construction and green environmental protection. Various innovative technologies and materials are also being used in green environmental protection and smart services. , logistics support, venue construction, energy-saving travel, communications and other aspects have achieved leaps in progress.

The ice-making secret behind the ‘Ice Ribbon’

The National Speed ​​Skating Stadium, also known as the “Ice Ribbon”, is the only new ice competition venue for this event and the first speed skating venue in the history of the Winter Olympics to use carbon dioxide as a refrigerant. The ice surface is the key facility for the operation of the venue. The National Speed ​​Skating Stadium has the largest all-ice design in Asia, with an area of ​​nearly 12,000 square meters. The use of carbon dioxide transcritical direct cooling ice-making technology to make ice on such a large ice surface has no precedent in the previous Winter Olympics speed skating venues.

The carbon dioxide transcritical direct cooling ice-making technology enabled by the “Ice Ribbon” this time makes the ice surface temperature very uniform, the maximum temperature difference can be controlled within 0.5 degrees Celsius, and the ice surface hardness is always consistent, which is helpful for athletes to create sports performance.

Compared with traditional refrigeration methods, carbon dioxide refrigeration can increase the energy efficiency of ice making by 30%. According to the researchers’ calculations, the carbon dioxide ice making system of the National Speed ​​Skating Hall can save about 1.8 million kWh of electricity every year. The refrigeration system takes away the heat under the ice layer through the refrigerant or refrigerant to achieve the rapid cooling of the ice rink. The removed heat is generally discharged directly into the outdoor environment, but here, engineers rely on scientific and technological means. , to achieve recycling, can provide 70 ℃ hot water for domestic hot water and dehumidification regeneration and other purposes.

“Green electricity” contributes to the carbon neutrality of the Winter Olympics

The Beijing Winter Olympics will be fully carbon neutral. In terms of transportation, the use of hydrogen fuel cell vehicles is the highlight of this Winter Olympics, becoming a “hydrogen energy show”. The Winter Olympics will demonstrate the operation of more than 1,000 hydrogen energy vehicles equipped with more than 30 hydrogen refueling stations. The largest demonstration of a fuel cell vehicle.

During the Beijing Winter Olympics, 212 “100% domestic” hydrogen fuel cell buses provided hydrogen refueling services through 5 “100% green hydrogen” hydrogen refueling stations. The total fuel saving is about 9.6 tons, achieving a carbon reduction benefit of 0.75 kg per kilometer per vehicle, and the total carbon emission reduction is about 30 tons. Energy-saving and clean energy vehicles account for almost 100% of passenger cars, and more than 80% of all vehicles.

In order to achieve the carbon neutrality goal of the Beijing Winter Olympics, the Winter Olympics implemented the Zhangbei Flexible DC Power Grid Project to import green electricity produced by wind energy and solar energy in Zhangbei into Beijing. During the event, 26 venues in the three major areas of the Beijing Winter Olympics will achieve 100% green power supply. Of course, some safety inspections of power supply have also introduced intelligent collaborative robots to conduct uninterrupted inspections of key security points to ensure reliable power supply.

From catering to security, robots are everywhere at the Winter Olympics

Robots shine at the Winter Olympics, including catering robots, delivery robots, disinfection robots, etc.

by Country GardenThe smart restaurant developed by Qianxi Robot Group covers an area of ​​5,400 square meters and can accommodate more than 1,700 people at the same time. Robot elements are everywhere. Robots are responsible for cooking, and robots are responsible for making claypot rice. You can eat Chinese food or Western food. After the robot is ready, the food delivery robot will use the cloud rail transmission system in the air to deliver the food to the point. The location of the diners.

The dual-arm collaborative robot “Dabai” of Beijing Orion Star Technology Co., Ltd. is transformed into a coffee “master”. Dabai is composed of two six-axis collaborative robotic arms. It only takes 4 minutes to complete a series of coffee making processes such as taking beans, weighing, taking water, adding water, and brewing.

The delivery robot provided by No. 9 Company, after a certain modular transformation and testing, can provide indoor patrol and security services in the Winter Olympics venues, monitor and manage the situation in the venues in real time, and can also provide goods delivery services for people.

An intelligent disinfection robot equipped with an excimer disinfection lamp.An intelligent disinfection robot equipped with an excimer disinfection lamp.

There are some full-time disinfection robots that work silently in the stadium. Unlike ordinary disinfection robots, when facing complex surfaces, the disinfection robots in the Winter Olympics can not only adaptively identify the shape of the object, but also plan autonomously. Disinfection trajectory to achieve efficient and accurate killing, more suitable for working in an unmanned environment. The Institute of Automation of the Chinese Academy of Sciences is equipped with an excimer disinfection lamp for the disinfection robot, which emits ultraviolet rays with a wavelength of 222 nanometers to disinfect the irradiated air without causing harm to the human body.

 High-speed cameras and Beidou navigation assist athletes in training

In the Winter Olympics competitions, AI, high-speed cameras, and Beidou navigation technology are widely used for athletes training.

For example, in the ski jumping biomechanics rapid feedback system, in the past, coaches mainly used ordinary cameras and video shooting equipment to film the athletes’ movement trajectories, and then watched and analyzed them afterwards, and proposed improved training plans. By setting up multiple high-speed high-definition cameras to collect three-dimensional motion data, AI can automatically identify the position of each joint point of the athlete, and calculate important indicators such as take-off and kick-off distance, take-off joint angle, and take-off vertical speed, so as to realize the three-dimensional motion capture and analysis of ski jumping.

For sports such as figure skating, there are more judging criteria. The AI ​​system helps athletes improve the standardization and aesthetics of their postures through three-dimensional skeleton node detection and posture estimation. The visualization of the 3D model of the sports target provides a clear sports model for the technical analysis of the athlete.

The Beidou Navigation Digital Snow Field Feedback System utilizes the digitization of site information and the digitization of athletes’ sliding trajectories realized by the Beidou Navigation System.

The 5G cloud broadcast “big test” behind the ultra-high-definition broadcast

5G and cloud broadcasting technologies have been adopted on a large scale in this Winter Olympics, becoming a training ground for future sports broadcasting technologies. At present, 5G signals have covered the competition venues and supporting facilities of the Beijing Winter Olympics, as well as the Beijing-Zhangjiakou High-speed Railway, Beijing-Li Expressway and other major transportation routes.

The advantage of 5G cloud broadcast is that broadcasters do not need to transport bulky and expensive broadcast equipment to the Winter Olympics site, and transfer directing, production, editing, subtitles and other work from traditional broadcast trucks to the cloud, and complete the production and broadcast process in the cloud. Realize high-quality, low-cost broadcast of Olympic events.

This Winter Olympics will be broadcast in 4K ultra-high-definition format for the first time, and some important events will be broadcast in 8K format. In terms of the length of the event, the overall duration is 1,000 hours, and the content of broadcast content will reach 6,000 hours, which is the largest in the previous Winter Olympics. The cloud broadcast platform OBSCloud is AlibabaThe broadcasting technology jointly created with the Olympic Broadcasting Service Company was used for the first time at the Tokyo Olympics, providing broadcasting support on the cloud for global broadcasting organizations. This is also the first time in the history of the Olympic Games that cloud computing has been used to support global broadcasting.

The high-speed rail 5G ultra-high-definition studio launched during the Winter Olympics is the first time in the world to build an ultra-high-definition live broadcast studio based on 5G technology on a high-speed train with a speed of 350 kilometers per hour to achieve long-term stable transmission of ultra-high-definition signals. China UnicomA 3.5G 200M network has been deployed throughout the entire Beijing-Zhangjiakou high-speed rail network, and 5G signals have been introduced into the car, which is the first in the world.

The world’s first 8K+5G ultra-high-definition video full-service OB van.  Image source: Zoomlion Ultra Clear/Collaboration CenterThe world’s first 8K+5G ultra-high-definition video full-service OB van. Image source: Zoomlion Ultra Clear/Collaboration Center

During the Beijing Winter Olympics, when spectators watch short track speed skating and figure skating events, users will enjoy clearer pictures and more colorful viewing angles. The world’s first full-service OB van for 5G+8K ultra-high-definition video completed by Zoomlion Ultra HD/Collaboration Center will undertake the broadcasting services of these two events. The OB van and technical support service team will cooperate with China Central Radio and Television Station The 2022 Beijing Winter Olympics short track speed skating and figure skating events will be produced in 8K public signals. It is expected that the actual event broadcast will continue from February 4th to 20th, with a total of 17 consecutive days of broadcast, with a total broadcast time of about 46 hours and a total material recording time of more than 230 hours.

According to the characteristics of ice and snow sports in the Winter Olympics, the self-developed 8K+VR live broadcast system and free-view (6DoF VR) technology of the Winter Olympics are used to demonstrate and broadcast the ice and snow sports. Users can use mobile phones, VR helmets and large TV screens. , to realize VR live viewing.

The main station CCTV News officially launched the AI ​​sign language anchor in November, a system developed and built independently based on the “Wu Dao 2.0” super intelligent model of Beijing Zhiyuan Artificial Intelligence Research Institute. AI sign language anchors can not only report news, but also sign language live broadcasts of events, and broadcast sign language through body movements, expressions, fingers and other actions. AI anchors have the ability to express sign language and sign language presentation effects, and can provide professional and accurate sign language commentary, which is convenient for the disabled People watching the match report.

Technological Innovations Behind Clothing

Due to the special climatic conditions of winter sports, uniforms must not only withstand severe cold, wind and keep warm, but also be breathable and moisture-permeable, light and comfortable, but windproof and breathable, warm and light are objectively contradictory.

To this end, the R&D and design team of the Winter Olympics uniforms and equipment has achieved a balance in the use of materials through scientific material selection and wearing combinations to meet the needs of all scenarios to the greatest extent. The winter Olympic uniform filling material is a kind of multi-layer structure thermal insulation flakes. Under the illumination of light for 1 minute, the temperature of the spectral heat storage fiber is 8°C higher than that of the ordinary heat storage fiber, which can meet the thermal insulation needs of the cold environment.

In the Winter Olympics racing events, 0.01 seconds may determine the ownership of a medal. In order to minimize wind resistance and improve the speed of athletes, tight-fitting clothing has been widely used in speed skating, alpine skiing, snowmobiles, sleds and other racing events.

The racing tight-fitting competition suit developed by Beijing Institute of Fashion Technology. The surface of the clothing is a pit structure, which can effectively reduce the wind resistance. Collect and test the basic performance of more than 150 kinds of fabrics. It is designed according to the physical characteristics of Chinese athletes, mainly involving short track speed skating. , speed skating, alpine skiing and other racing events, the drag reduction rate of a variety of competition suits developed exceeds 10%.

In terms of color and collocation, the competition uniform chooses more beautiful colors to reflect the sense of design. In addition, through color analysis, patterns and other visual factors psychological evaluation research, combined with 3D simulation method, to study the impact of clothing visual factors on competition evaluation. (China State Grid)

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