Title:
POSITIONING METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/061836
Kind Code:
A1
Abstract:
Disclosed in embodiments of the present invention are a positioning method and device. The method comprises: respectively obtaining, from multiple UWB anchor nodes of a scene, a distance from each UWB anchor node to a first user in the scene, and obtaining a first video stream from a camera worn by the first user; calculating a UWB location of the first user according to the distance from each UWB anchor node to the first user in the scene by using a time delay of arrival (TDOA) positioning algorithm; extracting a background point from the first video stream according to a preset background point feature, and calculating the speed of the first user according to the displacement of the background point in an adjacent frame; and combining the UWB location of the first user and the speed of the first user to obtain a combination location of the first user, and using the combination location of the first user as a positioning location of the first user. In the embodiments of the present invention, UWB is combined with a visual signal to position the user, and the positioning accuracy, in particular at a UWB blind spot area, is improved.
Inventors:
LIU WENFENG (CN)
WANG ZIJIAN (CN)
FAN SHUNJIE (CN)
ZHAO XU (CN)
WANG ZIJIAN (CN)
FAN SHUNJIE (CN)
ZHAO XU (CN)
Application Number:
PCT/CN2020/118176
Publication Date:
March 31, 2022
Filing Date:
September 27, 2020
Export Citation:
Assignee:
SIEMENS LTD CHINA (CN)
International Classes:
G01S5/02; G06K17/00
Foreign References:
| CN110208740A | 2019-09-06 | |||
| CN109214482A | 2019-01-15 | |||
| CN108919181A | 2018-11-30 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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