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Indoor and outdoor seamless positioning system

A seamless positioning, indoor and outdoor technology, applied in satellite radio beacon positioning system, radio wave measurement system, wireless communication, etc., can solve the problems of weak usability and high cost

Inactive Publication Date: 2014-01-22
BEIHANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the accuracy and ease of use of various technologies vary, most technologies require the deployment of additional equipment and the modification of a large number of existing equipment. The seamless positioning system implemented by it will cost a lot of money and has weak usability.

Method used

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  • Indoor and outdoor seamless positioning system
  • Indoor and outdoor seamless positioning system
  • Indoor and outdoor seamless positioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] see figure 1 , is a schematic diagram of combined positioning of WIFI and GNSS based on indoor and outdoor environment detection. First, through indoor and outdoor environment change detection, if it is indoors, turn off GNSS and turn on the WIFI device; if it is outdoors, turn on GNSS and turn off the WIFI device. Through WIFI positioning technology, MEMS assisted positioning technology, GNSS positioning technology to achieve seamless positioning result output.

[0053] see figure 2 , image 3 , the present invention mainly includes five layers: perception layer L1, algorithm layer L2, hardware layer L3, data layer L4, and application layer L5. Take the user moving from indoor to outdoor as an example to illustrate the working process of the seamless positioning system of this design.

[0054] Firstly, three modules included in the perception layer L1, the user demand module L11, the scene module L12 and the status module L13, trigger the switching of positioning t...

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Abstract

An indoor and outdoor seamless positioning system comprises a sensing layer L1, an algorithm layer L2, a hardware layer L3, a data layer L4 and an application layer L5, wherein the sensing layer L1 comprises a user request module L11, a scene module L12 and a state module L13 which are in parallel; the algorithm layer L2 comprises algorithm selection software, and algorithm selection is realized on the basis of information of a signaling set S1 sent by the sensing layer L1; the hardware layer L3 comprises hardware switch management software, and switching of hardware switch states of GNSS (global navigation satellite system) and WIFI (wireless fidelity) is completed according to an algorithm selection result of the algorithm layer L2; the data layer L4 comprises WIFI data analysis and positioning software, GNSS data analysis and positioning software and MEMS (micro-electromechanical system) positioning software; and the application layer L5 comprises client software and is used for providing position-based service for a user. The indoor and outdoor seamless positioning system has the characteristics that the system can perform self-adaptive switching of software and hardware according to scenes, so that only one of GNSS equipment and WIFI equipment is in the operating state most of the time, and terminal power is saved.

Description

technical field [0001] The present invention provides an indoor and outdoor seamless positioning system, specifically an indoor and outdoor seamless positioning system based on wireless transmission technology (WIFI) and global satellite navigation system (GNSS) positioning technology, including software and hardware architecture design and signaling process. The design can switch the corresponding WIFI and GNSS hardware switching states accordingly while the positioning technology is adaptively switched with the environment changes, and belongs to the field of wireless transmission and navigation technology. Background technique [0002] With the development of human society, people's demand for their own location information is increasing, thus many navigation and positioning systems have been developed. The global satellite navigation system (GNSS) provides people with high-precision, all-weather positioning services, but due to the characteristics that its measurement s...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W84/12G01S19/46
CPCY02D30/70
Inventor 杨东凯杜元锋修春娣刘源孙智强
Owner BEIHANG UNIV
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