BODY MOVEMENT DETECTOR, BODY MOVEMENT DETECTION METHOD AND BODY MOVEMENT DETECTION PROGRAM
First Claim
1. :
- A body-movement detecting apparatus comprising;
an acceleration sensor configured to be mounted on a body of a user;
vertical-component extracting means for extracting a vertical component of an acceleration from a detection output from the acceleration sensor;
separating means for performing component separation of the vertical component extracted by the vertical-component extracting means into a high-band component and a low-band component;
detecting means for detecting a peak-position candidate on the basis of the low-band component of the vertical component separated by the separating means;
identifying means for identifying the peak-position candidate detected by the detecting means as a peak-position candidate in a case where a ratio between energy of the low-band component and energy of the high-band component in a predetermined range including the peak-position candidate is less than a predetermined value; and
body-movement detecting means for detecting body movement of the user on the basis of the peak-position candidate identified by the identifying means.
1 Assignment
0 Petitions
Accused Products
Abstract
A vertical component is extracted from an acceleration vector corresponding to body movement of a user from a three-axis acceleration sensor, and the vertical-component is separated by a high-band/low-band separating unit into a high-band component and a low-band component. Using these components, a peak detection/determination processing unit detects a peak-position candidate of action of the user in the vertical direction, identifies a peak-position candidate on the basis of an energy ratio between the high-band component and the low-band component, performs waveform matching regarding a predetermined range including each peak-position candidate, thereby determining a peak position, and detects body movement on the basis of the peak position, and a step-position analyzing unit detects a body-movement pitch.
81 Citations
19 Claims
-
1. :
- A body-movement detecting apparatus comprising;
an acceleration sensor configured to be mounted on a body of a user; vertical-component extracting means for extracting a vertical component of an acceleration from a detection output from the acceleration sensor; separating means for performing component separation of the vertical component extracted by the vertical-component extracting means into a high-band component and a low-band component; detecting means for detecting a peak-position candidate on the basis of the low-band component of the vertical component separated by the separating means; identifying means for identifying the peak-position candidate detected by the detecting means as a peak-position candidate in a case where a ratio between energy of the low-band component and energy of the high-band component in a predetermined range including the peak-position candidate is less than a predetermined value; and body-movement detecting means for detecting body movement of the user on the basis of the peak-position candidate identified by the identifying means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- A body-movement detecting apparatus comprising;
-
12. :
- A body-movement detecting method comprising;
a vertical-component extracting process of extracting a vertical component of an acceleration from a detection output of the acceleration sensor configured to be mounted on a body of a user; a separating process of performing component separation of the vertical component extracted in the vertical-component extracting process into a high-band component and a low-band component; a detecting process of detecting a peak-position candidate on the basis of the low-band component of the vertical component separated in the separating process; an identifying process of identifying the peak-position candidate detected in the detecting process as a peak-position candidate in a case where a ratio between energy of the low-band component and energy of the high-band component in a predetermined range including the peak-position candidate is less than a predetermined value; and a body-movement detecting process of detecting body movement of the user on the basis of the peak-position candidate identified in the identifying process. - View Dependent Claims (13, 14, 15)
- A body-movement detecting method comprising;
-
16. :
- A body-movement detecting program causing a computer, the computer being mounted on a body-movement detecting apparatus that is provided with an acceleration sensor configured to be mounted on a body of a user and that detects body movement of the user by using a detection output from the acceleration sensor, to execute;
a vertical-component extracting step of extracting a vertical component of an acceleration from the detection output of the acceleration sensor; a separating step of performing component separation of the vertical component extracted in the vertical-component extracting step into a high-band component and a low-band component; a detecting step of detecting a peak-position candidate on the basis of the low-band component of the vertical component separated in the separating step; an identifying step of identifying the peak-position candidate detected in the detecting step as a peak-position candidate in a case where a ratio between energy of the low-band component and energy of the high-band component in a predetermined range including the peak-position candidate is less than a predetermined value; and a body-movement detecting step of detecting body movement of the user on the basis of the peak-position candidate identified in the identifying step. - View Dependent Claims (17, 18, 19)
- A body-movement detecting program causing a computer, the computer being mounted on a body-movement detecting apparatus that is provided with an acceleration sensor configured to be mounted on a body of a user and that detects body movement of the user by using a detection output from the acceleration sensor, to execute;
Specification