Single/multiple axes six degrees of freedom (6 DOF) inertial motion capture system with initial orientation determination capability
First Claim
1. A motion capture system for measuring initial orientation and classic inertial measurement and change in spatial orientation (rho, theta, phi) and linear translation (x, y, z), comprising:
- an inertial magnetic motion capture (IMMCAP) module providing motion data;
a digital processing unit in electrical connection with said IMMCAP module to receive said motion data;
a means for comparing said motion data to a predefined motion data set;
a means for analyzing said motion data based on comparing said motion data to said predefined motion data set and providing a feedback signal in response thereto; and
a means for synchronizing said motion data to said predefined motion data set.
1 Assignment
0 Petitions
Accused Products
Abstract
A highly miniaturized electronic data acquisition system includes MEMS sensors that can be embedded onto moving device without affecting the static/dynamic motion characteristics of the device. The basic inertial magnetic motion capture (IMMCAP) module consists of a 3D printed circuit board having MEMS sensors configured to provide a tri-axial accelerometer; a tri-axial gyroscope, and a tri-axial magnetometer all in communication with analog to digital converters to convert the analog motion data to digital data for determining classic inertial measurement and change in spatial orientation (rho, theta, phi) and linear translation (x, y, z) relative to a fixed external coordinate system as well as the initial spatial orientation relative to the know relationship of the earth magnetic and gravitational fields. The data stream from the IMMCAP modules will allow the reconstruction of the time series of the 6 degrees of freedom for each rigid axis associated with each independent IMMCAP module.
-
Citations
19 Claims
-
1. A motion capture system for measuring initial orientation and classic inertial measurement and change in spatial orientation (rho, theta, phi) and linear translation (x, y, z), comprising:
-
an inertial magnetic motion capture (IMMCAP) module providing motion data; a digital processing unit in electrical connection with said IMMCAP module to receive said motion data; a means for comparing said motion data to a predefined motion data set; a means for analyzing said motion data based on comparing said motion data to said predefined motion data set and providing a feedback signal in response thereto; and a means for synchronizing said motion data to said predefined motion data set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An inertial magnetic motion capture (IMMCAP) module, comprising:
-
a tri-axial accelerometer; a tri-axial magnetometer; means for processing an output from said accelerometer to determine an orientation of said IMMCAP module relative to the earth gravity field; means for processing an output from said magnetometer to determine an orientation of said IMMCAP module relative to the earth magnetic field; and means for processing said orientation of said IMMCAP module relative to the earth gravity field and said orientation of said IMMCAP module relative to the earth magnetic field to determine an orientation of said IMMCAP module. - View Dependent Claims (11, 12, 13, 14)
-
-
15. A method for measuring motion using an inertial magnetic motion capture (IMMCAP) module, comprising the steps of:
-
initializing said IMMCAP module; generating motion data in response to motion of said IMMCAP module; analyzing said motion data for predefined characteristics; generating a feedback signal in response to said analysis; storing said motion data in memory; comparing said stored motion data to predefined motion data; and generating an error responsive to said comparison; and synchronizing said motion data to said predefined motion data. - View Dependent Claims (16, 17, 18, 19)
-
Specification