National University of Science and Technology, R&D Micro-radar Life Detector captures the light of underground life

[ China Instrument Network Instrument R&D ] In the face of major disasters, how to quickly and accurately find the vital signs buried in rubble, concrete, and other debris, and to maximize the rescue of the lives of the affected people has always been one of the technical problems in disaster relief work.

In the second session of Hunan University's second graduate electronic design competition recently held, instructed by Peng Bo, a lecturer in the Department of Intellience Sensing of Electronic Science College of the National University of Defense Technology, and the “Light of Life” team comprised of Liu Zihao and other students, developed a micro-motion radar. Life Detector" won the only special prize in the contest.

This award-winning "Micro-motion Radar Life Detector" uses a micro-motion modal analysis technology based on deep neural networks to enable analysis and identification of vital heartbeats and respiratory characteristics on the basis of life detection, effectively bringing people to life. Differentiating from other animals to achieve accurate rescue and improve the effectiveness of disaster relief.

Life detectors convert signals that represent vital information such as heartbeat, pulse, and breathing into other forms of energy, such as sound waves, electric waves, and infrared radiation. In the mountain collapse accident in Maoxian County, Sichuan Province in 2017, the search and rescue teams of the armed police forces used life detectors, carbon dioxide detectors, snake eye detectors, and drone-mounted laser radars to rescue trapped people. Grasp the situation on the site and scientifically formulate rescue plans to save the lives of trapped people to the greatest extent.

With the progress of society and the development of science and technology, all countries have begun to attach importance to the development of advanced rescue technologies and equipment. Since the last century, the United States, Germany, and Japan have taken the lead in carrying out research on life detectors. The existing life detection equipment mainly includes video life detectors, infrared life detectors, gas-sensing life detectors, ultra-low-frequency electromagnetic life detectors, radar wave life detectors, and the like, and are widely used in various search and rescue operations.

China is a disaster-prone country with many major disasters. Accurately locating those trapped in the “Golden 72 Hours” after the earthquake occurred and implementing accurate rescue is the core of improving rescue effectiveness. However, the current life detector on the market is still difficult to efficiently complete this. A task. After being miniaturized and integrated, the "micro-motion radar life detector" can play an important role in the application scenes such as earthquake rescue that require rapid detection and positioning of human targets.

With the continuous improvement of the level of scientific research, there will be more advanced life detection technologies available, and existing life detection technologies will also be improved and applied and developed in more fields.

(Source: Huasheng Online, Xinhua News Agency, Instrument Information Network)