Method for estimating step size of personnel based on inertial sensing

An inertial sensing and personnel technology, applied in the direction of measuring devices, instruments, surveying and navigation, etc., can solve the problems that it is difficult to keep the right foot completely still, and the data collected by MEMS is inaccurate, so as to reduce accumulation, improve accuracy and good reliability and stability effects

Inactive Publication Date: 2016-12-14
TIANJIN UNIV
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the uncertainty of people walking, assuming that MEMS is placed on the heel of the right foot of the person, when the person walks on the left foot, it is difficult to ensure that the right foot

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for estimating step size of personnel based on inertial sensing
  • Method for estimating step size of personnel based on inertial sensing
  • Method for estimating step size of personnel based on inertial sensing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to further understand the content, features and effects of the present invention, the following will further describe in detail the embodiments of the present invention in conjunction with the accompanying drawings.

[0034] The overall thinking of the present invention mainly lies in the detection of gait and the decomposition and processing of the acceleration signal in the gait cycle, using double zero rate detection points to locate the step length, and improving the accuracy of step length calculation.

[0035] 1. The various steps of the overall flow of a method for estimating personnel steps based on inertial sensing of the present invention are specifically described as follows:

[0036] The MEMS used in the present invention is SPACEPOINT SCOUT produced by PNI Company, which has a built-in three-axis accelerometer, three-axis gyroscope and three-axis magnetometer. Through the research and comparison of different MEMS placement positions, considering th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for estimating step size of personnel based on inertial sensing. The method comprises the steps of: (1), using a micro electro mechanical system to acquire the movement raw data of an indoor personnel; (2), generating a coordinate transformation matrix by using quaternion; (3), dividing the continuous movement into single steps, and calculating the single step length; and (4) accumulating the total displacement to obtain the length of the whole movement. Compared with the prior art, the invention has the advantages of: 1) the cumulative error caused by the quadratic integral of acceleration is avoided, thereby reducing the cumulative error of step calculation; 2) total displacement calculation by single step length accumulation has good reliability and stability; and 3) the accuracy of zero rate correction is improved, thus to improve the accuracy of the step length calculation.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to a method for calculating the step length of indoor positioning. Background technique [0002] Positioning technology, simply put, is to obtain the location information of objects. With the development of society and the progress of science and technology, people's demand for positioning and navigation in life and work continues to grow. The global satellite positioning system has completed the positioning in the outdoor open environment well; and for the indoor environment and the environment with weak satellite signals, the use of inertial navigation technology can realize the positioning and tracking of personnel. [0003] In recent years, with the continuous improvement of the cost performance of Micro-Electrical-Mechanical Systems (MEMS), Pedestrian Dead Reckoning (PDR) is considered to be one of the most promising personnel positioning technology solutions. PDR ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01C22/00
CPCG01C22/00
Inventor 刘昱郭凯李圣龙
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap