Life Detector can "Discover the Wall" Scientists crack myths

Without any contact, it can be detected at a distance whether or not there are people in multiple rooms—“the exploration of a partition wall”. A few days ago this myth was cracked by scientific and technical personnel of the Department of Biomedical Engineering of the Fourth Military Medical University. At the appraisal meeting of the Radar Life Detector organized by the Ministry of Health, an appraisal committee composed of Academician Yu Mengsun and seven experts agreed that the main performance indicators of the instrument have reached the level of the international equivalents, indicating that China has The radar non-contact life detection technology with independent intellectual property rights.

In 1998, Professor Wang Jianqi of the Department of Biomedical Engineering of the Fourth Military Medical University led a research team to begin research on the subject. After more than five years of hard work, China has finally developed its own radar "life detector." The instrument incorporates radar technology and biomedical engineering technology. It transmits microwaves through special radars, and detects whether or not it contains various micro motions caused by human life activities after receiving reflected waves, and extracts human respiration and heartbeat using special biomedical signal processing techniques. And vital signs such as physical activity, thus detecting people.

The instrument does not require any electrodes or sensors that touch the human body, successfully cancels the effects of wall clutter on human reflection, solves the problems of the jitter of the instrument itself, and realizes non-contact and long-distance detection of human life information. The detection distance can reach 30-50 meters, and the thickness of a solid brick wall can reach 2.3 meters.