The Paper's reporter Cheng Ting
With the advent of the 2022 Beijing Winter Olympics, the mystery of the Winter Olympics guarantee work is being unveiled layer by layer.
How to ensure food safety during the Winter Olympics? How to make the off-site audience have a better viewing experience? Under the pressure of epidemic prevention and control, how to improve the level of epidemic prevention and safety?
On January 18, Yang Pengyu, head of the Winter Olympic Special Class of the Beijing Municipal Science and Technology Commission and the Zhongguancun Management Committee, introduced that a number of scientific and technological achievements in these aspects have provided technical support and support.
For example, the Winter Olympic food safety guarantee platform established with blockchain technology as the core can realize the traceability of winter Olympic food; the development of the first set of 5G+8K broadcast trucks in China and put into use, which will provide the public with high-quality off-site viewing services; and the newly developed digital sign language broadcasting system can facilitate people with disabilities to watch event reports.
The newly developed public space bioaerosol novel coronavirus monitoring system can realize virus monitoring and early warning and rapid detection of the air in the venue.
Liu Peng, a researcher at the Department of Biomedical Engineering of Tsinghua Medical College, introduced the relevant situation of the public space bioaerosol new coronavirus monitoring system. Photo of this article By The Paper's reporter Cheng Ting
More than 70 technologies provide all-round support for the Winter Olympics
Yang Pengyu introduced that as of now, more than 200 technologies have been tested and used in the Winter Olympics scenario, involving information engineering and software engineering, public safety, high-definition video, 5G and new energy, and more than 60 subdivided application scenarios such as wisdom, green, security and epidemic prevention.
Among these technologies, more than 70 have been identified for application during the competition, of which more than 20 are highly representative in terms of technological sophistication and application display – these technologies will play an important role in supporting epidemic prevention and control, green and low-carbon, race safety, and improving the viewing experience.
"For example, we have established a digital twin and intelligent integrated management platform by carrying out research and research on the construction of green smart stadiums and low-energy operation technologies, and applied this technology to the construction of speed skating halls, saving the main structure construction period of 2 months and nearly 3,000 tons of steel." In the National Winter Sports Training Center, a precise environmental control platform was built to form a 'total energy manager' of the venue, and the daily energy consumption was reduced by more than 10%. Yang Pengyu said.
"We have also established a food safety guarantee platform for the Winter Olympics with blockchain technology as the core, realizing the traceability of winter Olympic food." Yang Pengyu told the surging news reporter that around the Winter Olympics food, engineering construction, operation support and other links, a number of technical application research and development research and development has been deployed to support the operation safety of the Winter Olympics.
Talking about the viewing experience, Yang Pengyu said, "Around the event report, event broadcasting, live tour, etc., we have actively promoted the application of new technologies such as artificial intelligence, high-definition display, and virtual reality. ”
It is reported that China has not only developed and put into use the first 5G+8K broadcast vehicle in China, but also developed a digital sign language broadcasting system with the "Wudao 2.0" ultra-large-scale pre-training model as the underlying core technology to facilitate people with disabilities to watch the event report.
At the same time, the cloud broadcast technology solution has been verified many times in the test match, and the "bullet time" will be produced for OBS during the game, and the video service system for the Beijing Winter Olympics press conference will be served.
In addition, the virtual tour system of the Winter Olympics developed based on three-dimensional space reconstruction technology can realize service functions such as scene display and VR tour, which will bring a new experience to athletes and spectators.
Tsinghua master student Li Bao introduced the aerosol collection and analysis and detection process.
Safely collect airborne viruses and complete reporting in 45 minutes
At present, the new crown pneumonia epidemic is still spreading around the world, and doing a good job in scientific epidemic prevention is an important prerequisite for running this Winter Olympic Games.
We have been very effective in the prevention and control of overseas import policies and methods, such as overseas personnel isolation policies and cold chain killing, but there is still some room for improvement in environmental transmission, especially aerosols. How to solve the problem of environmental transmission, especially aerosol transmission, during the Winter Olympics?
In this regard, Yang Pengyu said that a public space aerosol new coronavirus detection system has been developed, which can realize the virus monitoring and early warning and rapid detection of the air in the venue.
This system has been successfully applied in the Beijing Winter Olympics test games by researchers from Tsinghua University, Peking University, institute of pathogenic biology of the Chinese Academy of Medical Sciences, Changping Laboratory and other units through emergency research and joint development.
The surging news reporter saw in the bioaerosol testing laboratory of Zhongguancun Life Science Park that the bioaerosol new coronavirus nucleic acid monitoring system consists of two parts: a portable aerosol collector and an integrated high-sensitivity new coronavirus nucleic acid detector.
According to Liu Peng, a researcher at the Department of Biomedical Engineering of Tsinghua University School of Medicine, the aerosol collector was developed by the Maosheng team of the School of Environment of Peking University. The air flow of the collector reaches 400L/min, and the virus enrichment efficiency is the highest in china.
The integrated high-sensitivity new coronavirus nucleic acid detector was developed by Liu Peng's team. The system can make the detection sensitivity of the new crown virus to 20 copies/ml, which is 10 times more sensitive than the conventional qPCR method, and the test results show that the system has a positive detection rate of three times the detection rate of the existing real-time PCR system.
According to Li Shanglin, a postdoctoral fellow at tsinghua university's school of medicine, after the bioaerosol sampler is turned on, it can flow more than 400 liters per minute to direct the air cyclone to the detection tube filled with reagents, and eventually only aerosols, dust and other substances will be collected, and the collected virus can be inactivated by the reagent and is no longer infectious.
After the bioaerosol sample is placed into the integrated highly sensitive new coronavirus nucleic acid detector, the instrument can automatically amplify and analyze the nucleic acid, and generate the test results independently.
Liu Peng said that the new crown virus particles in the air aerosol were collected into the collection tube and added to the detection chip, and the work could be completed in 30 minutes. The fully automatic completion of nucleic acid extraction and amplification detection, the issuance of test reports, this work can be completed within 45 minutes.
From sampling to feeding the test results back to the epidemic prevention department, the whole process can be completed within 4 hours.
The detection system has been widely used and verified in the Winter Olympic Test Match, and has been optimized accordingly for the epidemic prevention conditions during the Game, which meets the requirements of the Winter Olympic Games.
During the Winter Olympics, aerosol collectors will be arranged in a number of Winter Olympic venues, and temporary testing stations will be set up to provide comprehensive aerosol new coronavirus testing guarantee for the Winter Olympics.
Editor-in-Charge: Ascendas