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1. (WO2018098851) SENSOR DEVICE FOR INDOOR NAVIGATION AND MAGNETIC MAP GENERATING METHOD

Pub. No.:    WO/2018/098851    International Application No.:    PCT/CN2016/109447
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Tue Dec 13 00:59:59 CET 2016
IPC: G01C 21/08
G01C 21/20
Applicants: GUANGDONG SYGOLE INTELLIGENT TECHNOLOGY CO., LTD
广东思谷智能技术有限公司
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
华中科技大学
Inventors: LEE, Kok Meng
李国民
LI, Min
李敏
WANG, Donghai
王东海
HOW, Bingjie
郝兵杰
Title: SENSOR DEVICE FOR INDOOR NAVIGATION AND MAGNETIC MAP GENERATING METHOD
Abstract:
A sensor device for indoor navigation and a magnetic map generating method, the sensor device comprising a regular hexahedron circuit board (1) and magnetic sensors (2) arranged on six surfaces of the regular hexahedron circuit board (1), and the magnetic map generating method comprising: acquiring an air pressure difference ΔP of a current floor relative to the ground (S1) and an indoor architecture design and construction plan (S2); using fork route junctions on walking paths as breaking points, carrying out straight-line segment discrete segmentation processing on all of the walking paths in the indoor plan to obtain discrete straight-line segment segmentation paths, and carrying out unique address numbering for each discrete straight-line segment segmentation path and the fork route junctions (S3); walking at a uniform speed on each discrete straight-line segment segmentation path, and acquiring a magnetic induction intensity average value and magnetic field gradient data of each point in the discrete straight-line segment segmentation paths (S4), the magnetic induction intensity average values and the magnetic field gradient data forming magnetic map data; and storing the unique address numbers of the discrete straight-line segment segmentation paths and the corresponding magnetic map data in pairs (S5), thereby generating a magnetic map for indoor navigation. The magnetic map paths generated by said method are accurate, and positioning thereof is highly precise.