Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Indoor double-layered positioning method and indoor double-layered positioning system for walker

A positioning method and technology for pedestrians, applied in the direction of navigation, measuring devices, instruments, etc. through speed/acceleration measurement, can solve the problems of low positioning accuracy of indoor personnel, inability to correct cumulative error of position information, low coupling, etc., to achieve High indoor positioning accuracy, improved fusion effect, and extended life cycle

Active Publication Date: 2015-09-09
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
View PDF4 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a pedestrian indoor double-layer positioning method and system, which is used to solve the problem of using maps to assist pedestrian positioning methods and systems in the prior art for positioning accuracy of indoor personnel. Not high, low coupling, unable to adaptively correct the cumulative error of the estimated indoor occupant position information

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
  • Indoor double-layered positioning method and indoor double-layered positioning system for walker
  • Indoor double-layered positioning method and indoor double-layered positioning system for walker
  • Indoor double-layered positioning method and indoor double-layered positioning system for walker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides an indoor two-layer positioning method for pedestrians, please refer to figure 1 , is shown as a flowchart of the method for indoor positioning of pedestrians. Such as figure 1 As shown, the pedestrian indoor double-layer positioning method includes the following steps:

[0037] S1, the lower layer filtering step, the lower layer filtering step specifically includes:

[0038] S11. Select one foot of the pedestrian as a detection object, and collect motion data of the detection object. In this step, it is first necessary to select a fixed foot as the detection object, and then collect motion data based on the inertial sensor installed on the foot. The inertial sensor includes a three-axis accelerometer, a three-axis gyroscope, and a magnetometer to collect motion data such as acceleration and angular velocity, respectively.

[0039] S12, judging whether the detection object is in a static state at the current moment according to a predetermin...

Embodiment 2

[0107] This embodiment provides a pedestrian indoor double-layer positioning system 1, please refer to image 3 , is shown as a schematic diagram of the principle structure of an indoor two-layer localization system for pedestrians. The pedestrian indoor double-layer positioning system 1 includes a lower filter unit 11 and an upper filter unit 12 connected to the lower filter unit 11, and the lower filter module 11 includes a selection module 111, an acquisition module 112, a judgment module 113, and The first processing module 114 . The upper filter unit 12 includes a second processing module 121 , a detection module 122 , and a calibration module 123 .

[0108] Wherein, the lower layer filtering module 11 is used for performing lower layer filtering.

[0109] The selection module 111 is used to select one foot of the walker as a detection object.

[0110] The collection module 112 connected with the selection module 111 is used to collect the motion data of the detection ...

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 provides an indoor double-layered positioning method for a walker. The indoor double-layered positioning method for the walker includes the following steps of lower-layer filtering: judging whether a detected object is in a static state or not in the present moment according to a preset static detecting mode, calculating mobile position coordinate information of the present moment, performing error state biased estimation and acquiring calibrated mobile position coordinate information of the present moment if the detected object is in the static state, and continuing judging if the detected object is not in the static state; upper-layer filtering: finding out finished moment of a zero velocity stage in the present moment, performing preset correction on the calibrated mobile position coordinate information of the present moment in the finished moment, acquiring a first difference, comparing the first difference with a second difference between the calibrated mobile position coordinate information of the present moment and calibrated mobile position coordinate information of a previous moment, detecting that the walker walks anticlockwise or clockwise in the present moment, and performing anticlockwise or clockwise correction if the walker walks anticlockwise or clockwise in the present moment. By the indoor double-layered positioning method for the walker, indoor positioning precision based on an inertial sensor is higher.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to an indoor double-layer positioning method and system for pedestrians. Background technique [0002] With the rapid development of Micro-Electro-Mechanical Systems (MEMS), it is possible to use micro-inertial sensors and three-axis magnetometers to track the motion characteristics of pedestrians, and calculate their motions to obtain real-time position information. The biggest advantage of this type of pedestrian positioning system is its self-completeness. Because of this characteristic, more and more attention has been paid to this kind of pedestrian indoor positioning technology, which has very important application prospects in some specific scenarios (emergency rescue, emergency medical treatment, location determination of shopping malls, etc.). However, due to the error of the sensor itself after a long period of calculation, there will be a non-negli...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/16G01C21/20
CPCG01C21/165G01C21/206
Inventor 徐正蓺杨卫军黄超魏建明
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com