A method and system for improving positioning accuracy of wearable devices based on IoT cloud

Abstract

The present invention provides a method for improving the positioning accuracy of a wearable device based on the IoT cloud, including: an intelligent positioning system establishes a position positioning information queue for the wearable device, and the wearable device periodically obtains its own position positioning information and uploads it to the cloud server, and the cloud The server analyzes whether the received location positioning information has the location information determined by the global positioning system, and then obtains the location information by positioning based on the cell information of the mobile communication network and locating based on the WIFI access point information, and compares their distance and the queue of the location positioning information According to the similarity of the address information in the last location information, the location information with high similarity is selected as the positioning result of this time, and stored in the location positioning information queue. The present invention filters out inaccurate position information through analysis and calculation, and solves the problems of inaccurate positioning and position offset easily occurring in positioning based on mobile communication network cell information and WIFI access point information.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a method and a system for improving the positioning accuracy of wearable devices based on the IoT cloud. Background technique [0002] With the improvement of social informatization, more and more wearable devices are used in people's daily life, and are used in people's safety, health, travel and other aspects. In the application of wearable devices, many application scenarios are realized based on device location information, which requires high accuracy and timeliness of location positioning. However, due to energy-saving reasons, wearable devices generally do not perform position positioning continuously, but periodically perform position positioning every few minutes (1-5 minutes), which makes the positioning time of using the global positioning system shorter. In some scenarios, due to poor positioning signals, interference, or occlusion, especially in indoo...

AI Technical Summary

Problems solved by technology

However, due to energy-saving reasons, wearable devices generally do not perform position positioning continuously, but periodically perform position positioning every few minutes (1-5 minutes), which makes the positioning time of using the global positioning system shorter. In some scenarios, due to poor positioning signals, interference, or occlusion, especially in indoor, subway, and tunnel scenarios, GPS positioning is prone to excessive positioning time and positioning failures, which seriously affect users. Therefore, wearable devices need to use positioning methods based on mobile communication network cell information positioning and WIFI access point information positioning as supplementary positioning methods.

However, because the cell information of the mobile communication network is easily blocked by buildings, refracted and interfered by other signals, the signal strength will change frequently; and the information of WIFI access points in the air is also increasing and changes frequently. They will interfere with each other, and some new WIFI access point information cannot be used for location positioning, but it is easy to cause location information interference, making the results inaccurate, and even causing a large distance offset. Sometimes even if the device remains still, the positioning The result is also offset to other farther locations

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