Patent ID: 11971493
Assignee: NANNING FULIAN FUGUI PRECISION INDUSTRIAL CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 8:
9. An electronic device comprising:
a wireless signal matching module, configured to, when a mobile device moves near one of Wi-Fi tags, collect signal strength values of Wi-Fi signals of Wi-Fi APs near the Wi-Fi tag, match the signal strength values of the Wi-Fi tag with a signal strength list in a map database, and obtain a first location of a first Wi-Fi tag with the greatest matching degree according to the matching result of the signal strength values;
a SURF descriptor matching module, configured to calculate a SURF descriptor of an image of the Wi-Fi tag, match the SURF descriptor with SURF descriptors recorded in the map database, discover an image of a Wi-Fi tag with the highest matching degree in the map database according to the matching result of the SURF descriptors and obtaining a second location of a second Wi-Fi tag according to the SURF descriptors recorded in the map database, and calculate a homography matrix based on the image of the Wi-Fi tag with the greatest matching degree; and
a coordinate matching module, configured to calculate current coordinates of a third Wi-Fi tag according to the homography matrix to obtain a third location of the third Wi-Fi tag, and obtain positioning information of the mobile device according to the first location, the second location and the third location.