RSSI wireless sensor network three-dimensional cooperative positioning method

A wireless sensor, network three-dimensional technology, applied in positioning, wireless communication, radio wave measurement system and other directions, can solve problems such as insufficient positioning accuracy

Active Publication Date: 2020-06-16
广东华东爆破拆迁工程有限公司
View PDF4 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a three-dimensional collaborative positioning method for RSSI wireless sensor networks in order to overcome the defects of insufficient indoor positioning accuracy described in the prior art.

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
  • RSSI wireless sensor network three-dimensional cooperative positioning method
  • RSSI wireless sensor network three-dimensional cooperative positioning method
  • RSSI wireless sensor network three-dimensional cooperative positioning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] This embodiment provides an RSSI wireless sensor network three-dimensional collaborative positioning method, such as figure 1 As shown, the method includes the following steps:

[0093] S1: Use the WSN coarse positioning algorithm based on the LightGBM model to perform rough positioning on the unknown node, and obtain the coordinates of the unknown node position as (x, y, z);

[0094] S2: Calculate the average value of the received signal strength RSSI from different anchor nodes, the calculation formula is:

[0095]

[0096]Among them, n is the number of neighbor anchor nodes, RSSI i is the received signal strength with the i-th anchor node;

[0097] S2: Determine the RSSI threshold RSSI in different environments thers ; Judge RSSI av ≥RSSI thres Whether it is established, if established, proceed to S3; if not established, proceed to S7;

[0098] S3: Determine whether the number of neighboring anchor nodes is greater than or equal to 4, if yes, proceed to S4, ...

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 relates to an RSSI wireless sensor network three-dimensional cooperative positioning method, which comprises the following steps of: (1) acquiring received signal strength RSSI of an unknown node to be positioned, performing data preprocessing and feature extraction, and performing predicting to obtain a coarse positioning result; (2) setting an RSSI threshold value, selecting a nodewith higher positioning precision from unknown nodes, and judging the selected node by using a sub set to obtain a secondary selection cooperative node; and finally, screening out nodes meeting the precision requirement as optimal cooperative nodes by utilizing an anchor node replacement principle. (3) drawing a circle by taking the distance between every two nodes selected according to a precision optimization strategy as a radius, wherein the quadrilateral area is composed of inner side coordinates of intersection points of two adjacent circles, the coordinates of the quadrilateral area areobtained according to the principle of a rotation matrix, and finally the mass center of the quadrilateral area is calculated and serves as the coordinates of unknown nodes to serve as a final corrected positioning result. The indoor positioning precision can be improved.

Description

technical field [0001] The present invention relates to the technical field of wireless sensor network indoor positioning, and more specifically, relates to a three-dimensional collaborative positioning method for an RSSI wireless sensor network. Background technique [0002] With the rapid development and maturity of science and technology, people's demand for Location Based Services (LBS) is also growing continuously. At present, outdoor positioning technologies such as Global Positioning System (Global Positioning System, GPS) and cellular wireless positioning technologies have been very mature, and are widely used in car navigation, military and other fields. However, the average person spends at least 80% of their time indoors. Therefore, indoor positioning technology has a broader application prospect. However, compared with the outdoor environment, the indoor environment is more complex and the signal is easily blocked and interfered by large objects such as buildin...

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): H04W64/00H04B17/318G01S5/10
CPCG01S5/10H04W64/00H04B17/318
Inventor 李志梁许亮
Owner 广东华东爆破拆迁工程有限公司
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