From Yang Liwei to Jing Haipeng, Liu Wang, and Liu Yang, in China ’s current manned spaceflight activities, astronauts breathing oxygen, drinking water, and eating food in space all need to be brought to the sky from the ground. It needs to be brought back to earth in a special bag. In the future, such a situation may be completely different. By establishing a controlled ecological life support system, the oxygen, water and food needed by the astronauts in space can be recycled within the system to achieve "self-sufficiency." Yesterday afternoon, the China Astronaut Center announced that China's first controlled ecological life support integration experiment was a complete success. The two test participants, Tang Yongkang and Mi Tao, conducted a 30-day scientific experiment in the closed experimental cabin and successfully exited the cabin. This move signifies that China has entered a systematic and integrated stage in the field of controlled ecological life support technology research, and is of landmark significance for advancing the development of China's long-term manned spaceflight environmental control life support technology. 36 square meters of vegetables on the experimental site are supplied with oxygen and food Yesterday afternoon, Tang Yongkang and Mi Tao wearing blue lab coats walked out of the closed cabin and smiled. The two young people in their 30s were all researchers of the China Astronaut Research and Training Center. They were informed that they would conduct the first controlled ecological life insurance experiment. They took the initiative to enter the cabin after being selected by layers of physical and mental examinations and related tests , Was "off" for a whole month. Happiness and excitement are the feelings of the two young people when they enter and leave the cabin. Tang Yongkang from Post No. 01 introduced that during the 30 days, they got up at 6:30 every morning and went to bed at 11:00 every night. "Eat well and sleep well." Just as the astronauts were in space, they ate aerospace food, and the dishes were rotated every four days, but the difference was that they could eat fresh vegetables, which were important roles in this experiment. "We both particularly like to eat that vegetable as an aerospace food." Tang Yongkang said that these vegetables have been cultivated before entering the cabin, although they are freshly picked at both meals a day, and they are "sweetly eaten raw" after being coated with sweet and spicy sauce. , But the two could n’t eat 36 square meters of vegetables at all. The "Controlled Ecological Life Insurance System Integrated Experimental Platform", built last year, uses the photosynthesis of plants to provide the occupants with the oxygen they need while purifying the carbon dioxide they exhale, fully realizing the "self-sufficiency" of the atmosphere. Up to 100% atmospheric closure. On the side of the 36-square-meter plant cabin, there is an 18-square-meter crew cabin. In the past month, Tang Yongkang and Mi Tao have done scientific experiments in psychology and traditional Chinese medicine, and exercised on bicycles and traction machines. Also watch the news online and chat with relatives and friends. Despite staying in a fully enclosed cabin, the life is very interesting. Deng Yibing, deputy director of the Astronaut Center, introduced that in this experiment, the Astronaut Center broke through the key technologies of the "human-plant" atmospheric oxygen and carbon dioxide exchange dynamic balance control technology, the comprehensive treatment and recycling of microbial wastewater, the atmosphere, water and The degree of food closure (ie, the ratio of self-sufficiency) reached 100%, 85%, and 15%, respectively. Technology application related technology is not limited to manned spaceflight The success of this experiment means that China already has the ability to carry out a "human-plant" controlled ecological life insurance integration experiment for 2 to 3 people, 30 days or more. Life insurance is life support technology, which allows people to survive in harsh environments and to live and work better. Deng Yibing, deputy director of the Astronaut Center, introduced that long-term manned deep space exploration, settlement and development of extraterrestrials such as the moon and Mars are the inevitable direction of future aerospace technology development, and the establishment of a controlled ecological life insurance system is the fundamental to solve the astronaut ’s life support problem. way. According to reports, the Shenzhou series of spaceships used the first generation of "non-renewable" life insurance system, which has been gradually incorporated into the second generation of "physicochemical regeneration" life insurance system, and this experiment marks the third generation of life insurance system has achieved stage success . The next step is to achieve "self-sufficiency" in drinking water and allow feces and other excreta to enter the ecological circulation system. Compared with foreign countries, China's related research started late, but after nearly two decades of development, it has now broken through and mastered many key technologies such as intensive cultivation of plants in closed systems and material recycling. The China Astronaut Center is actively planning, and plans to join with a number of relevant scientific research units to apply for the construction of a larger, closed-space ecological cycle research base with world advanced levels. This base will have the ability to carry out a comprehensive and integrated experimental research on a controlled ecological life insurance system with 4 to 8 people and months to years. In addition to manned spaceflight, related technologies can also be applied in special environments such as the North and South Arctic scientific research stations, nuclear submarines, aircraft carriers, ocean-going operations ships, etc., through the establishment of an ecological circulation system to supply fresh food and improve the living environment. Glossary Carrying out long-term manned deep space exploration and the settlement and development of extraterrestrials such as the moon and Mars are the inevitable directions for the future development of aerospace technology, and the establishment of a controlled ecological life support system is the fundamental way to solve the astronauts ’life support problem. The controlled ecological life support system is also called the biological regeneration life support system, which mainly produces food, oxygen and water for astronauts through higher plants and microalgae, and removes carbon dioxide and other gases produced by the astronauts; provides animal proteins for astronauts by feeding animals; The decomposition of microorganisms converts the waste in the system into reusable substances, thus achieving a completely closed cycle of the substances in the system. The biggest feature of the system is that it can realize the full regeneration of basic life support materials such as food, oxygen and water in the system. The material is highly closed, which can greatly reduce the ground logistics supply and provide a fresh green environment for the astronauts to adjust Its psychological state. 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