Compared with traditional perception methods such as vision, infrared, and laser, millimeter-wave radar is not affected by light, and can realize non-sensing and active monitoring of indoor occupants throughout the day, and has the function of personal privacy protection. It is currently the best sensor for home scene applications. This product adopts domestically produced chips and is independently controllable to realize accurate tracking and positioning of many people in the room. At the same time, it can detect people in static states such as reading and sleeping, and can suppress interference such as curtains and green plants. This product has the advantages of low cost, domestic production, high reliability and high performance.