POSITION DETECTING DEVICE, WEARABLE SENSOR SYSTEM AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To perform a highly accurate position detection with a simple and inexpensive configuration.

SOLUTION: A position detecting device comprises: a storage section which preliminarily registers a database where three distances to three receivers are vectorized; and a detection processing section which obtains an initial position by searching the database based on distance information output by each receiver and subject to the distance between a transmitter and each receiver and detects a position of a moving portion by solving non-linear equations using the initial position. The detection processing section is configured to include a first Kalman filter to obtain the distance information for searching the database by filtering the distance information and a second Kalman filter for a position state estimation which is dynamically tuned to estimate a position state of the moving portion.

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