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

Indoor and outdoor seamless positioning method, device, equipment and medium

An indoor positioning and seamless positioning technology, applied in wireless communication, electrical components, etc., can solve problems such as unstable positioning, positioning jumping, and positioning result errors

Active Publication Date: 2021-04-16
GUANGZHOU HKUST FOK YING TUNG RES INST
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the process of implementing the present invention, the inventors found that in actual application scenarios, it is difficult to find a clear and suitable switching opportunity, so switching between indoor positioning and outdoor positioning solutions will cause positioning jumps and unstable positioning; The positioning results obtained by relying solely on navigation satellite signals or an indoor positioning signal in the transition area have large errors.

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 and outdoor seamless positioning method, device, equipment and medium
  • Indoor and outdoor seamless positioning method, device, equipment and medium
  • Indoor and outdoor seamless positioning method, device, equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In order to solve the switching jitter in indoor and outdoor positioning switching. To solve problems such as inaccurate positioning, the present invention proposes a seamless positioning scheme for indoor and outdoor positioning, which will be described in detail below.

[0056] Through analysis, it is found that when positioning outdoors, satellite signals mainly cover the outdoors, entering indoors from the outdoors, indoor scenes are blocked by buildings, GNSS signals rapidly decay, and the signal strength of satellite signals changes from strong to weak; while in indoor positioning, WiFi signals are weak. It mainly covers indoors. From outdoors to indoors, the WiFi signal strength changes from weak to strong, and the number of received access points (APs for short) changes from small to large. Therefore, indoor positioning signals and outdoor positioning signals can be received in the indoor and outdoor border areas. Yes, but the received signal strength is weak. ...

Embodiment 2

[0102] On the basis of embodiment one, see figure 2 , the acquiring the weight corresponding to the current positioning signal includes:

[0103] S21. According to the last positioning result feedback, respectively adjust the weights corresponding to the current first indoor positioning signal and the first outdoor positioning signal;

[0104] S22. Acquire the weight corresponding to the first indoor positioning signal and the weight corresponding to the first outdoor positioning signal after weight adjustment.

[0105] Based on the existing positioning technology, the positioning system may have large errors in its own estimation, and even some positioning schemes are difficult to estimate its own positioning effect. In the embodiment of the present invention, according to the feedback of the last positioning result and dynamically adjusting the first indoor positioning signal and the first outdoor positioning signal as weights of the Kalman filter, so as to make up for the...

Embodiment 3

[0119] On the basis of the second embodiment, it further includes: detecting that within a preset time threshold, the number of times the weight exceeds the first threshold is greater than or equal to the second threshold, and resetting the Kalman filter.

[0120] In the embodiment of the present invention, after obtaining the weight corresponding to the current positioning signal, it can be judged whether the Kalman filter is blind according to the comparison between the weight obtained before and the first threshold. In the case of confidence, it prevents the blind confidence of the Kalman filter from causing the positioning results to seriously deviate from the real position, and the convergence does not return to the real value.

[0121] In the embodiment of the present invention, when the scaling factors of the first indoor positioning signal and the first outdoor positioning signal exceed the first threshold continuously at the same time, and the number of times is greate...

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 and outdoor seamless positioning method, which includes locating the current position and acquiring the current positioning signal, wherein the positioning signal includes a first indoor positioning signal and a first outdoor positioning signal; acquiring the current positioning signal corresponding to weight; adjusting the current positioning signal according to the weight to obtain adjusted second indoor positioning signal and second outdoor positioning signal; based on a Kalman filter, according to the second indoor positioning signal and the second outdoor positioning signal Data fusion is performed on the positioning signal to calculate the current accurate positioning information. Make full use of indoor and outdoor positioning signals, instead of switching between indoor positioning and outdoor positioning, to avoid unstable positioning caused by switching jumps; and adjust the first indoor positioning signal and the first indoor positioning signal according to the obtained weight The ratio of the first outdoor positioning signal enables data fusion of the indoor positioning signal and the outdoor positioning signal to obtain a better effect and improves positioning accuracy.

Description

technical field [0001] The present invention relates to the field of positioning technology, in particular to an indoor and outdoor seamless positioning method, device, equipment and computer-readable storage medium. Background technique [0002] With the progress of society and the development of science and technology, positioning technology has achieved qualitative leaps in terms of technical means, positioning accuracy, and usability, and has gradually penetrated into social life from the fields of navigation, aerospace, aviation, surveying and mapping, military affairs, and natural disaster prevention. It has become an indispensable and important application in people's daily life - such as people search, location search, traffic management, vehicle navigation and route planning, etc. Positioning can be divided into two categories: indoor positioning and outdoor positioning according to different usage scenarios. Because different scenarios have different requirements, ...

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): H04W36/00H04W36/32H04W64/00
CPCH04W36/0083H04W36/32H04W64/00
Inventor 陈辞张弢张骁王周红高民
Owner GUANGZHOU HKUST FOK YING TUNG RES INST
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