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Base-station-free indoor positioning system

An indoor positioning and base station technology, applied in the field of positioning

Active Publication Date: 2014-05-28
吴志超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] It can be considered that there are not many related studies based on power line signal fingerprints at home and abroad. The current research work focuses on the research of signal fingerprint comparison algorithms. and the influence of disconnecting electrical appliances on the channel characteristics, instant denaturation problem, and this is the most notable feature of the power line channel different from the wireless channel

Method used

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  • Base-station-free indoor positioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Embodiment 1 Implementation scheme of indoor self-positioning system

[0086] This embodiment is the application mode ①, which realizes the self-positioning or self-navigation of the portable terminal 230 in the area along the subscriber line side of a low-voltage transformer. In this application mode, each portable terminal 230 can realize self-positioning, and the auxiliary signal generator 110 and the fixed sensing device 140 are shared by multiple self-positioning systems; each portable terminal 230 and its dependent equipment resources constitute a cost A typical connection relationship of the system described in the invention, see figure 2 As shown in the connection diagram, the components and technical system of the system are shown in the previous section of "Technical Scheme" and "Description of Drawings".

[0087] The information transmission link between each fixed sensing device 140 and the mobile terminal 230 (processing and control unit 160 ) adopts the ...

Embodiment 2

[0115] Embodiment 2 Implementation scheme of indoor positioning management system

[0116] This embodiment is the application mode ②, and the location management of the mobile terminal 320 is implemented in the area along the subscriber line side of a low-voltage transformer. This application mode is a central wireless point-to-multipoint connection structure. For the system connection relationship, see image 3 As shown in the connection diagram, the components and technical system of the system are shown in the previous section of "Technical Scheme" and "Description of Drawings". The schematic diagram only shows the connection relationship of one mobile terminal 320 in the system, and the connection relationship of other mobile terminals 320 is similar to this.

[0117] In this application mode, the functions of the mobile terminal 320 are relatively simple, mainly including the wireless transceiver and the preprocessing function of fingerprint information, while the proces...

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Abstract

The invention relates to a base-station-free indoor positioning system. The indoor positioning system is characterized in that: firstly, since power lines are widely distributed in a building, no wireless base station is required and the engineering investment is reduced; secondly, the individual communication transmitter identification technology is introduced on the basis of the channel characteristics of the power lines; thirdly, a quasi real-time feedback mechanism is adopted to effectively overcome the chronic time-varying malady of the power lines; and fourthly, the technology is simple, the product design and the manufacture cost are reduced correspondingly. The base-station-free indoor positioning system is beneficial to breakthrough of the indoor application difficulty of the traditional positioning technology.

Description

technical field [0001] The invention relates to the field of positioning technology, in particular to an indoor positioning system without a base station that is based on power line signal fingerprint information and can resist time-varying power line channel characteristics. Background technique [0002] 1. Signal fingerprint positioning technology [0003] Positioning and navigation technology has never been as familiar and concerned by the general public as it is today. Modern people have more or less felt or heard of the application of wireless navigation and positioning technology represented by GPS satellite navigation technology in our living or working environment. universal. [0004] However, for positioning and navigation services to truly integrate into people's work and life, there is still a threshold that must be crossed, that is, indoor positioning and navigation. The eye-catching satellite navigation technology also has its limitations. It is only suitable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
CPCY02D30/70
Inventor 吴志超
Owner 吴志超
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