Patent ID: 6132391
Filing Date: 2000-10-17
Classification: G01C

Abstract:
A portable position detector for detecting a moved position of a walking body, comprising:walking-motion detection means for measuring a value related to a walking motion caused by movement of said walking body;moved-distance estimation means for estimating a moved distance, based on an output of said walking-motion detection means;moved-direction detection means for detecting a direction of said walking body or a direction-movement caused by movement of said walking body;moved-direction determination means for detecting points at which the body of said walking body arrives at substantially a highest position and/or lands by walking, based on said value measured by said walking-motion detection means, and also for determining a moved direction at a specific point as a specific moved direction, the specific point being related to at least one of said detected two points and also being specified in a range in which said body is between said highest-position arrival point and a highest-position arrival point that is obtained by the next walking step; andmoved-position estimation means for estimating a position of said walking body after movement, based on said moved distance of said walking body estimated by said moved-distance estimation means and said specific moved direction determined by said moved-direction determination means.