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

An indoor positioning method and system based on multi-source signal fusion

An indoor positioning and source signal technology, used in positioning, radio wave measurement systems, wireless communication and other directions, can solve the problems of low cost, low latency and accuracy of indoor positioning, reduce calculation time and matching range, reduce online matching, The effect of improving robustness and accuracy

Active Publication Date: 2022-05-10
武汉华康世纪医疗股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of low cost, low delay and high accuracy of indoor positioning that the existing technology cannot simultaneously meet, the first aspect of the present invention provides an indoor positioning method based on multi-source signal fusion, including: constructing multiple multiple position fingerprint maps of the signal source in a noise-free environment, and construct a normalized gradient distribution map of the multi-source signal based on it, and the multiple signal sources include at least magnetic field and millimeter wave; according to the gradient distribution map and multiple Position fingerprint map, determine one or more first signal sources for target indoor positioning, and multiple second signal sources for auxiliary positioning; receive signals from one or more first signal sources, and compare their signal strengths Perform feature matching with the corresponding location fingerprint map to obtain one or more estimated values ​​of the target at the current position; use pedestrian trajectory estimation method and filtering algorithm to correct the one or more estimated values ​​to obtain the final target position

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 indoor positioning method and system based on multi-source signal fusion
  • An indoor positioning method and system based on multi-source signal fusion
  • An indoor positioning method and system based on multi-source signal fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0043] refer to Figure 9 , the second aspect of the present invention provides an indoor positioning system 1 based on multi-source signal fusion, including: a construction module 11, which is used to construct multiple location fingerprint maps of various signal sources in a noise-free environment, and according to It constructs a normalized gradient distribution map of multi-source signals, and the various signal sources include at least a magnetic field and a millimeter wave; a determination module 12 is used to determine the target indoor positioning map according to the gradient distribution map and multiple location fingerprint maps. One or more first signal sources, and multiple second signal sources for auxiliary positioning; matching module 13, used to receive signals from one or more first signal sources, and compare their signal strengths with corresponding position fingerprints The map performs feature matching to obtain one or more estimated values ​​of the targe...

Embodiment 3

[0046] refer to Figure 10 , the third aspect of the present invention provides an electronic device, including: one or more processors; storage means for storing one or more programs, when the one or more programs are used by the one or more executed by one or more processors, so that the one or more processors implement the method of the first aspect of the present invention.

[0047] The electronic device 500 may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 501, which may be loaded into a random access memory (RAM) 503 according to a program stored in a read-only memory (ROM) 502 or loaded from a storage device 508 Various appropriate actions and processing are performed by the program. In the RAM 503, various programs and data necessary for the operation of the electronic device 500 are also stored. The processing device 501 , ROM 502 and RAM 503 are connected to each other through a bus 504 . An input / output (I / O) in...

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 indoor positioning method and system based on multi-source signal fusion. The method includes: constructing multiple location fingerprint maps of various signal sources in a noise-free environment, and constructing a normalized multi-source signal map based on them Gradient distribution map; according to the gradient distribution map and multiple location fingerprint maps, determine one or more first signal sources for indoor positioning of the target, and multiple second signal sources for auxiliary positioning; receive one or more The signal of the first signal source is characterized by matching its signal strength with the fingerprint map of the corresponding location to obtain one or more estimated values ​​of the target at the current position; Make corrections to get the final target position. The invention determines the best signal source through multiple fingerprint maps, and determines an indoor positioning method that takes cost, time delay and precision into account through related conditions and correction methods.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to an indoor positioning method and system based on multi-source signal fusion. Background technique [0002] With the rapid development of communication technology and wireless sensing technology, as well as the increasing popularity and application of various intelligent terminals, people's demand for seamless location indoors and outdoors is increasing, and the complex indoor electromagnetic Indoor positioning technology presents challenges. On the other hand, location-based services (Location Based Service, LBS) are gradually changing people's lifestyles and work forms, such as positioning and navigation, social networking, precise advertising, public safety and emergency handling, etc. Among them, 70% to 90% of the location services required by public users are indoors. At the same time, the Global Navigation Satellite System (GNSS) in the outdoor enviro...

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): G01S5/02G01C21/20H04W64/00
CPCG01S5/02585G01S5/02522H04W64/006G01C21/206
Inventor 钟浩陈林梁青松
Owner 武汉华康世纪医疗股份有限公司
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