Unlock instant, AI-driven research and patent intelligence for your innovation.

An Improved Weighted Centroid Location Method Based on Fingerprint Quantization

A technology of weighted centroid and positioning method, which is applied to services based on location information, services based on specific environments, etc., can solve problems such as large ranging errors and inaccurate positioning, and achieve the effect of avoiding theoretical errors and improving positioning accuracy.

Active Publication Date: 2020-12-11
重庆稳稳科技有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Combining the ranging algorithm based on RSSI with the centroid algorithm in the non-ranging positioning algorithm for target positioning is a research hotspot at present, but RSSI is affected by the environment and the distance between nodes, the ranging error is large, and the centroid positioning algorithm is affected by the ranging error , leading to inaccurate positioning

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
  • An Improved Weighted Centroid Location Method Based on Fingerprint Quantization
  • An Improved Weighted Centroid Location Method Based on Fingerprint Quantization
  • An Improved Weighted Centroid Location Method Based on Fingerprint Quantization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] refer to figure 1 , the present invention provides an improved weighted centroid location method based on fingerprint quantization, the method comprising the following steps:

[0023] 1. The establishment of the fingerprint database, through the actual test, select a number of sampling points at equal intervals, collect an appropriate amount of sample data, and build a fingerprint database.

[0024] 2. To determine the quantization distance and quantiz...

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 improved weighted centroid positioning method based on fingerprint quantification, relating to the technical field of indoor positioning. The method is characterized in thatin a Zigbee communication environment, collecting actual measured values to establish a fingerprint database; quantizing in a quantization domain according to the RSSI value received by the unknown node to obtain a quantization distance and a quantization RSSI value, taking the quantization distance and a generated quantization error as weight parameters, and further positioning the unknown nodeby utilizing an improved intersection triangle weighted centroid algorithm. Experimental results show that the algorithm can effectively avoid the theoretical error problem caused by serious signal attenuation, and the positioning precision is improved.

Description

technical field [0001] The invention relates to the technical field of indoor positioning, in particular to an improved weighted centroid positioning method based on fingerprint quantification. Background technique [0002] In the application of wireless sensor network technology, target location is very important. Therefore, wireless positioning technology plays an important role in the fields of target tracking and high-precision positioning in a small area. [0003] In order to obtain more accurate positioning, researchers at home and abroad have proposed a variety of positioning algorithms, and continue to improve on the basis of existing algorithms. In wireless positioning, positioning algorithms can be divided into ranging-based positioning algorithms and non-ranging-based positioning algorithms. The positioning algorithm based on non-ranging only estimates the position of the node according to the connectivity of the network, and the hardware requirements are not hi...

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 Patents(China)
IPC IPC(8): H04W4/02H04W4/021H04W4/33
CPCH04W4/021H04W4/023H04W4/33
Inventor 高媛
Owner 重庆稳稳科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com