专利检索 ap:("NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS") AND inv:"Jing Chen" 第 1 页

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发明授权
Indoor visible light positioning method and system based on single LED lamp 有权

公开(公告)号：US11050489B2

公开(公告)日：2021-06-29

申请号：US16881853

申请日：2020-05-22

申请人： NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS

发明人： Jie Hao , Jing Chen

IPC分类号： H04B10/116 , H05B45/10 , H05B47/195 , F21V33/00 , G01S17/46 , H04B10/50 , H04N5/232 , H04N5/14 , F21Y115/10 , F21W111/10

摘要： An indoor visible light positioning method and system based on a single LED lamp. The system includes an LED communication module and a smartphone module. The LED communication module sends its coordinates and shape data to the smartphone module. The smartphone module includes an inertial measurement unit (IMU) and a camera. The IMU is configured to obtain movement data of a smartphone. The camera is configured to shoot video streams of the LED lamp. Computing processing is performed on center point coordinates of the LED lamp and IMU data in the video streams, and constraints are provided by using a homography matrix of ellipses in the video streams, to obtain accurate location information of the smartphone, and provide location-based services such as navigation and query for a user.