MOVEMENT SENSITIVE DEVICE

PROBLEM TO BE SOLVED: To provide a movement sensing device which can determine validity of a detected value showing distance to an object, so that the influence of noise can be removed, and, e.g., comparatively small movement of the object can be accurately detected. SOLUTION: The movement sensing d...

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Bibliographic Details
Main Authors KATO KEI, TAKEMURA YASUHIRO, TAKEI TOSHIJI, NAKAJIMA MASATO, MIMURA KAZUHIRO, TOMITA NOBURO
Format Patent
LanguageEnglish
Published 26.08.2004
Edition7
Subjects
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To provide a movement sensing device which can determine validity of a detected value showing distance to an object, so that the influence of noise can be removed, and, e.g., comparatively small movement of the object can be accurately detected. SOLUTION: The movement sensing device 1 is equipped with a distance sensor 11 which detects a distance to the object and outputs a plurality of detected values showing the distance during a first period, an arithmetic unit 22 which obtains an average value of a first value showing dispersion in the first period of the plurality of output detected values and a second value showing dispersion in a second period which is a small period formed by sub-dividing the first period, in the first period, and a determination device 23 which determines validity of the plurality of output detected values, based on the first value and the average value of the second values in the first period. COPYRIGHT: (C)2004,JPO&NCIPI
Bibliography:Application Number: JP20030028416