Indoor positioning method based on uwb

Abstract

The present invention provides a UWB-based indoor positioning method. Tags and anchor nodes deployed in the monitoring area communicate in a network. The tags and paired anchor nodes measure distance one by one. It is transmitted to the server through the wired communication module, and the server performs cooperative perception and collection, and calculates the position of the tag according to the time-of-flight sent by each anchor node. The server is used to uniformly plan the anchor node number and workflow for the same label; the clock synchronization is realized by the server periodically sending clock synchronization messages to each anchor node through the network port, thereby solving the problem of data synchronization; using the server within a positioning cycle Count the received anchor node serial numbers of the hardware address of the same label node, and specify the order of anchor nodes to avoid data collision between multiple nodes; improve the intelligence and networking of each node, improve the positioning timeliness, and make positioning more accurate.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things application, and in particular relates to a UWB-based indoor positioning method. Background technique [0002] With the advent of the era of big data, IoT applications based on location awareness are playing an increasingly important role. [0003] GPS positioning technology has limitations. For example, when the object to be positioned is located indoors, it is difficult to receive satellite signals, and the positioning accuracy of GPS is on the order of meters. For some situations that require precise positioning, the accuracy of GPS is far from enough. In order to solve the above technical problems, those skilled in the art propose an indoor positioning method based on UWB, which has the advantages of high positioning accuracy, strong anti-interference ability, and low power consumption. In 2004, IEEE released the 802.15.4a channel model, which provided the basis for the performance...

AI Technical Summary

Problems solved by technology

[0004] However, with the improvement of the complexity of indoor positioning systems, the clock synchronization accuracy of each node is often insufficient during the positioning process, and data collisions between multiple nodes may occur, resulting in data loss during the positioning process and poor positioning timeliness, resulting in Current UWB-based indoor positioning methods are not accurate enough

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