Indoor positioning method based on RSSI fingerprints

An indoor positioning and fingerprint technology, applied in the field of wireless positioning, can solve the problems of unstable positioning process and poor accuracy, and achieve the effect of improving continuity and reducing coordinate jumping

Pending Publication Date: 2022-06-21
BEIJING HAN NETWORKS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows devices (such as sensors) can continue working even if they are moved around too much during their lifetime. It achieves this through continual location tracking that keeps track of where each sensor was previously installed on its own system. By combining these two techniques together, it ensures accurate measurements over time without any interruptions from external factors such as weather conditions or other environmental changes.

Problems solved by technology

Technological Problem: Current methods used in wireless position finding systems rely heavily upon static databases with fixed templates or fuzzy logic techniques due to changes caused by factors like environmental conditions (such as temperature) or user behavior during use. These limitations can lead to instability and decreased performance even if they were initially designed correctly.

Method used

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  • Indoor positioning method based on RSSI fingerprints
  • Indoor positioning method based on RSSI fingerprints
  • Indoor positioning method based on RSSI fingerprints

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Embodiment Construction

[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0048] It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

[0049] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but it is not intended to limit the present invention.

[0050] The present invention includes:

[0051] An indoor positioning method based

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Abstract

The invention relates to the technical field of wireless positioning, in particular to an RSSI (Received Signal Strength Indicator) fingerprint-based indoor positioning method, which comprises the following steps of: S1, when detecting that equipment to be positioned generates a positioning signal, respectively acquiring the signal receiving strength of each positioning gateway; s2, generating a global posterior probability of each fingerprint point according to the signal receiving strength and the prior probability; and S3, outputting a positioning result according to the global posterior probability and the position coordinates of the fingerprint points, generating a new prior probability corresponding to each fingerprint point according to the positioning result and the global posterior probability, and then returning to S1. The method has the beneficial effects that the next prior probability for the same to-be-positioned device is generated by introducing the positioning result in the continuous positioning process, so that the fusion of historical data in the continuous positioning process is realized, the previous positioning is associated with the current positioning, and the positioning accuracy is improved. The coordinate jumping phenomenon caused by the independent positioning process in the prior art is reduced, and the continuity of the positioning track and the positioning stability are improved.

Description

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Claims

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Application Information

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Owner BEIJING HAN NETWORKS TECH CO LTD
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