Patent ID: 7891259
Filing Date: 2011-02-22
Classification: G01M

Abstract:
1. A human dummy system for evaluating comfort of a seat, comprising: sensor units attached to respective joints of a human dummy and configured to detect angles of the respective joints; and a data processing unit configured to determine relative locations of respective joints on a basis of angles of adjacent joints and distances therebetween, and determine an absolute location of a specific joint from a reference location by using the relative locations of the respective joints and coordinate system transformation between the respective joints of the human dummy; wherein the coordinate system transformation is performed through homogeneous transformation matrix operations using one or more of a translation matrix and a rotation matrix; wherein the relative locations of the respective joints are compensated by uniformly allocating error among coordinate points of respective joints; and wherein the error is determined by comparing coordinate values of the absolute locations of the target joint based on the reference location, the absolute locations acquired along at least two different routes connecting the reference location and the target joint in common.