POSITION DETECTION SYSTEM

WIPO Patent Application WO/2019/244543

A1

This position detection system 1 comprises a mobile station 100 that transmits a beacon signal Sb, a plurality of fixed stations 200 that receive the beacon signal Sb, and a position analysis device 300 that acquires position information for the mobile station 100 by estimating the position of the mobile station 100 from the reception intensities of the beacon signal Sb at each fixed station 200. The mobile station 100 includes a movement detection unit 130 (acceleration sensor 131, geomagnetic sensor 132, etc.) that determines when movement has stopped. While the movement of the mobile station 100 has stopped, the position analysis device 300 stops estimating the position of the mobile station 100 and keeps the position information at a fixed position. After stopping the estimation of the position of the mobile station 100, it is preferable for the position analysis device 300 to determine the fixed position by taking multiple measurements of the reception intensities of the beacon signal Sb at each fixed station 200 and specifying the fixed station at which the reception intensity of the beacon signal Sb is most often the highest.

KOBAYASHI TADASHI (JP)
MOMOTA ATSUSHI (JP)
KUBO TENGAI (JP)
NISHIYAMA HIDEKI (JP)

PCT/JP2019/020061

December 26, 2019

May 21, 2019

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ROHM CO LTD (JP)

G01S5/02; G01S5/14

JP2000050345A	2000-02-18
JP2016217943A	2016-12-22
JP2013148486A	2013-08-01
JP2015220678A	2015-12-07
JP2011117943A	2011-06-16
JP2017138116A	2017-08-10
US20090247186A1	2009-10-01

SANO PATENT OFFICE (JP)

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