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Indoor positioning method and device

An indoor positioning and location information technology, applied in the field of navigation, can solve problems such as accumulation of positioning errors, weak signals, and affecting positioning accuracy, and achieve the effect of improving positioning accuracy and rigorous positioning process

Inactive Publication Date: 2011-08-31
北斗羲和科技发展(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the existing positioning methods have disadvantages. When positioning, the distance between all sampling points and a certain sampling point is calculated. Once the number of sampling points increases or the signal strength received by the terminal to be positioned fluctuates greatly, the indoor positioning Accuracy will be greatly reduced
In addition, the indoor environment is relatively complex, the signal is weak, and the multipath and reflection phenomena are serious. The ranging process is easily affected by it to generate ranging errors, and the resulting positioning errors are easy to cause accumulation and affect positioning accuracy.

Method used

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  • Indoor positioning method and device

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Experimental program
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Embodiment 1

[0054] see figure 1 , this embodiment provides an indoor positioning method, specifically including:

[0055] Step 101: Obtain the signal strengths sent by multiple beacon nodes received by the terminal to be positioned;

[0056] Step 102: Compare the similarity between the signal strengths sent by the multiple beacon nodes and the position fingerprints corresponding to each reference point in each grid in the preset position fingerprint database to obtain the similarity of the grids, the position Fingerprints include signal strengths sent by multiple beacon nodes;

[0057] Step 103: Determine the location information of the terminal to be positioned according to the similarity of the grid.

[0058] In the method provided in this embodiment, the location of the terminal to be positioned is determined by comparing the received signal strengths sent by multiple beacon nodes with the location fingerprints corresponding to multiple reference points in the grid, and the similarit...

Embodiment 2

[0060] see figure 2 , this embodiment provides an indoor positioning method, wherein steps 201-204 are offline sampling stages, and steps 205-207 are online positioning nodes, the indoor positioning method specifically includes:

[0061] Step 201: Carry out unit grid division for the measured indoor area, and determine multiple reference points in each unit grid;

[0062] For this step, in this embodiment, the area with positioning requirements in the building is referred to as the measured area, and the measured area is divided into unit grids.

[0063] In this embodiment, a positioning area is required, which may be a working room, a lounge, a bathroom, a hall, a corridor, and a stair area between floors. This implementation can perform corresponding mesh division according to different positioning accuracy requirements: when the positioning accuracy requirements are low, that is, regional positioning, such as studios, lounges, bathrooms, etc., the entire room can be divid...

Embodiment 3

[0104] see Figure 6 , an embodiment of the present invention provides an indoor positioning device, the device includes:

[0105] Received signal strength module 301, configured to obtain the signal strength sent by multiple beacon nodes received by the terminal to be positioned;

[0106] Obtaining a grid similarity module 302, configured to compare the signal strengths sent by the plurality of beacon nodes with the position fingerprints corresponding to each reference point in each grid in the preset position fingerprint database to obtain a grid The similarity of the position fingerprint includes the signal strength sent by multiple beacon nodes;

[0107] The determining position information module 303 is configured to determine the position information of the terminal to be located according to the similarity of the grid.

[0108] Wherein, the obtaining grid similarity module 302 specifically includes:

[0109] A traversal unit 3021, configured to traverse the location ...

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Abstract

The invention discloses an indoor positioning method and a device, belonging to the field of navigation. The method comprises the following steps: acquiring the signal strength transmitted by a plurality of beacon nodes received by a terminal to be positioned; comparing the similarity of the signal strength transmitted by the beacon nodes and the similarity of the position fingerprint corresponding to each reference point in each grid in a preset position fingerprint database, and acquiring the similarity of the grid, wherein the position fingerprint comprises the signal strength transmitted by a plurality of beacon nodes; and according to the similarity of the grid, determining the position information of the terminal to be positioned. The device comprises a signal strength acquisition module, a grid similarity acquisition module and a position information acquisition module. In the invention, by comparing the similarity of the signal strength transmitted by a plurality of beacon nodes and the similarity of the position fingerprints corresponding to the reference points in the grid, the position of the terminal to be positioned is determined, the calculation of the similarity is expanded into multi-dimension, the positioning process is more rigorous, and the positioning accuracy is further improved.

Description

technical field [0001] The invention relates to the field of navigation, in particular to an indoor positioning method and device. Background technique [0002] With the development and popularization of WLAN (Wireless Local Area Network, wireless local area network) and WSN (WirelessSensor Network, wireless sensor network), the application of indoor positioning in business, public safety and military has become a research hotspot, such as deploying WSN in industrial sites , monitor the operation of equipment, deploy in warehouses to track logistics dynamics, and even temporarily and quickly deploy at fire rescue sites to provide firefighters with optimal route navigation. Based on existing hardware facilities such as widely popularized WLAN and Wi-Max (Worldwide Interoperability for Microwave Access, global universal microwave communication technology), there are also many attempts to provide various indoor positioning services by adding software modules. [0003] Since RS...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04B17/00H04B17/318
Inventor 邓中亮徐连明朱宇佳刘雯李欣欣刘文龙方灵孙子砚史丹丹盛庆裘昕王珂刘晨毕乾马致远李涛薛广普王小恒崔艳雯张红星肖冠兰
Owner 北斗羲和科技发展(北京)有限公司
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