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

Indoor wireless positioning method and system

A positioning method and indoor wireless technology, applied in radio wave measurement systems, positioning, instruments, etc., can solve the problems of non-line-of-sight error, multipath interference, large error, etc., and achieve the effect of improving positioning accuracy

Active Publication Date: 2018-08-28
SHANDONG UNIV
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the path loss coefficient used for positioning calculation varies with the quality of the environmental channel, the single radio frequency active indoor positioning system is susceptible to factors such as multipath interference, non-line-of-sight errors, and shadow fading, and the positioning is not accurate enough due to large errors
[0003] To sum up, in the prior art, there is still no effective solution to the problem that the path loss coefficient used for positioning calculation varies due to the quality of the environmental channel

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 wireless positioning method and system
  • Indoor wireless positioning method and system
  • Indoor wireless positioning method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0054] It should be noted that the terms used here are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, components, and / or combinations thereof.

[0055] As introduced in the background art, in the prior art, due t...

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 an indoor wireless positioning method and system. The method is characterized by arranging a plurality of fixed anchor nodes indoor, and arranging a mobile node on a target tobe positioned, wherein the mobile node is used for sending a radio-frequency positioning signal to the anchor nodes; obtaining radio frequency signal intensity RSSI received by each anchor node, and carrying out filtering processing on the RSSI; according to the radio frequency signal intensity RSSI obtained after filtering processing, calculating distance value between the mobile node and each anchor node, and comparing the distance values with infrared communication distance and rejecting the distance values, which are not within the infrared communication distance range; according to the distance value between the mobile node and each anchor node and the position of each anchor node, calculating the position of the mobile node within a certain time, and drawing a moving path of the mobile node; according to the moving path of the mobile node, calculating speed [delta]s of the mobile node and correcting the RSSI by utilizing the [delta]s; and calculating the distance between the mobile node and each anchor node by utilizing the corrected RSSI, and based on the calculated distance, determining the position of the mobile node.

Description

Technical field [0001] The invention relates to the field of indoor positioning, in particular to an indoor wireless positioning method and system. Background technique [0002] The existing indoor positioning uses a single radio frequency active indoor positioning system, which arranges gateway nodes and beacon nodes indoors, and arranges mobile nodes in the mobile target to make the mobile node move synchronously with the mobile target; the mobile node will receive the known signal The information of the target node is uploaded to the gateway through the short-range radio frequency communication network, and then delivered to the upper computer by the gateway to calculate the position of the mobile node through the mobile adaptive positioning algorithm based on TDOA positioning to complete the preliminary positioning; to achieve the matching correction of the preliminary positioning and The corrected positioning coordinates are stored in the spatial database; and the positionin...

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): G01S5/14G01S5/02
CPCG01S5/021G01S5/14
Inventor 杜晓通邢增宇孙鸿昌
Owner SHANDONG UNIV
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