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Positioning method and device

A positioning method and technology of positioning area, which are used in transmission monitoring, electrical components, transmission systems, etc.

Active Publication Date: 2011-06-15
BEIJING RTMAP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in positioning in the prior art, the present invention proposes a positioning method and device

Method used

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  • Positioning method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Embodiment 1 of the present invention provides a positioning method, and the process is as follows figure 1 Shown, including:

[0081] Step 101: Obtain a wireless signal at an unknown location, the signal strength of the wireless signal, and the identification code ID of the pre-deployed beacon node to which the wireless signal belongs;

[0082] Step 102: Process the ID and signal strength of the pre-arranged beacon node to which the wireless signal belongs to obtain an unknown location feature;

[0083] Step 103: Obtain the coordinates of the previous position of the unknown position, and remove the pre-divided grid in the positioning area according to the coordinates of the previous position;

[0084] Step 104: Calculate the coordinates of the unknown location according to the unknown location feature and the barycenter coordinates of the remaining grid after grid removal in the positioning area.

[0085] The method for positioning provided by the embodiment of the present inve...

Embodiment 2

[0087] Embodiment 2 of the present invention proposes a positioning method, which is improved on the basis of Embodiment 1. The process is as follows figure 2 Shown, including:

[0088] Step 201: Obtain a wireless signal at an unknown location, and obtain the ID of a pre-wired beacon node to which the wireless signal belongs and the signal strength of the wireless signal;

[0089] The wireless signal receiving device is used to receive the wireless signal at an unknown location. After receiving the wireless signal, the wireless signal receiving device can read the beacon node ID in the wireless signal and the signal strength of the wireless signal. In addition, there are multiple wireless signals received by the wireless signal receiving device at an unknown location, which are transmitted by pre-arranged beacon nodes with different IDs, and multiple wireless signals transmitted to beacon nodes with the same ID are received.

[0090] It should be noted that when the unknown location...

Embodiment 3

[0156] Embodiment 3 of the present invention provides a positioning device with a structure such as image 3 Shown, including:

[0157] The wireless signal acquisition module 301 is used to acquire a wireless signal at an unknown location and the signal strength of the wireless signal and the identification code ID of the pre-arranged beacon node to which it belongs;

[0158] The unknown location feature acquisition module 302 is configured to process the ID and signal strength of the pre-deployed beacon node to which the wireless signal acquired by the wireless signal acquisition module 301 belongs to obtain the unknown location feature;

[0159] The culling module 303 is used to obtain the coordinates of the last position of the unknown location, and remove the pre-divided grid in the positioning area according to the coordinates of the last position;

[0160] The calculation module 304 is configured to calculate the coordinates of the unknown location according to the unknown locati...

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Abstract

The invention provides a positioning method and device, belonging to the field of wireless communication application. The method comprises the following steps: acquiring a wireless signal in an unknown position; acquiring the signal intensity of the wireless signal and an identification code ID of a preset beacon node to which the wireless signal belongs; processing the beacon node ID and the signal intensity to obtain the characteristics of the unknown position; acquiring a coordinate of a last position of the unknown position; removing the grids divided in a positioning region in advance according to the coordinates of the last position; sorting the grids in the positioning region by utilizing a support vector machine; acquiring barycentric coordinates of the designated grids which are sorted at the top; and obtaining the coordinates of the unknown position by calculation. The positioning method and device provided by the invention do not need to measure the distance, thus the distance measuring error can not be generated, the precision in positioning is high, the influence degree by the signal is low, and the correlation between the last position and the current position in the dynamic positioning process can be reflected, thus decreasing the positioning error.

Description

Technical field [0001] The present invention relates to the field of wireless communication applications, in particular to a positioning method and device. Background technique [0002] With the continuous expansion and deepening of Internet of Things applications, location-aware computing (Location-aware Computing) and location-based services (LBS, Location-based Services) have become more and more important. Without location information, perception data has lost its application value. Since RSSI (Received Signal Strength Index) does not require additional hardware devices, the cost is low, and it can meet the requirements of large-scale applications. Currently, most indoor positioning uses RSSI-based positioning methods. [0003] In the prior art, the RSSI-based positioning method is mainly implemented by a ranging method, and the distance between nodes is directly measured by physical means as needed to determine the location of the positioning target. When measuring the distan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00H04B17/00
Inventor 邓中亮朱宇佳徐连明刘文龙李欣欣方灵盛庆刘雯崔艳雯孙子砚王珂毕乾刘晨史丹丹裘昕
Owner BEIJING RTMAP TECH
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