公开(公告)号：US20140172361A1

公开(公告)日：2014-06-19

申请号：US13924738

申请日：2013-06-24

Applicant: Industrial Technology Research Institute

Inventor： Jen-Chieh Chiang ,  Kun-Chi Feng ,  Xu-Peng He ,  Lun-Chia Kuo

IPC: G01C22/00

CPC classification number: G01C22/006 ,  G01C21/16 ,  G01C21/206

Abstract: A multi-posture stride length calibration system for indoor positioning includes: at least an inertial measurement unit, configured to sense at least a signal; a signal preprocessing unit, connected to the inertial measurement unit to process sensed signal; a multi-posture determination unit, configured to determine at least a posture based on processed signal; a step-computing decision unit, configured to compute a number of steps and a step frequency based on processed signal; a map feature calibration unit, configured to receive the number of steps, step frequency and posture to determined a stride length and decide whether the stride length matching a criterion; a step-computing threshold adjustment unit, configured to adjust a step-computing threshold if stride length not matching the criterion; and a stride length regression unit, configured to update a stride length regression curve for posture based on step frequency and stride length if stride length matching the criterion.

Abstract translation: 用于室内定位的多姿态步幅长度校准系统包括：至少一个惯性测量单元，被配置为感测至少一个信号; 信号预处理单元，连接到惯性测量单元以处理感测信号; 多姿势确定单元，被配置为基于处理的信号来确定至少一个姿势; 步骤计算决定单元，被配置为基于处理的信号计算步数和步进频率; 地图特征校准单元，被配置为接收步数，​​步进频率和姿势以确定步幅长度，并且确定步长是否匹配标准; 步进计算阈值调整单元，被配置为如果步长不匹配所述准则则调整步进计算阈值; 以及跨步长度回归单元，其被配置为如果步长匹配所述标准，则基于步进频率和步幅长度来更新用于姿势的步长长度回归曲线。