A positioning method and positioning system for accurately judging area boundaries in real time

Abstract

The invention relates to a positioning method for accurately judging the boundary of an area in real time. A wireless positioning base station using two frequency signals of low frequency and high frequency is used to locate the boundary of the area. The wireless positioning device can communicate with the wireless positioning base station through a low-frequency wireless signal or a high-frequency wireless signal. to communicate. The positioning system is composed of a wireless positioning base station and a wireless positioning device. It is characterized by the combination of low-frequency and high-frequency control positioning methods, making full use of the penetrability of low-frequency signals, the high accuracy of short-distance positioning judgments, the long transmission distance of high-frequency signals, and the high accuracy of mid- and long-distance positioning judgments. The characteristics of the system greatly improve the accuracy and real-time performance of the regional boundary judgment of indoor and outdoor positioning. The realization cost of the whole system is low, the working performance is stable and reliable, and the scope of application is wide. It is widely used and further developed for indoor positioning. A solid foundation has been laid.

Description

technical field [0001] The invention relates to wireless positioning technology, in particular to a positioning method and a positioning system for accurately judging area boundaries. Background technique [0002] With the rapid development of indoor positioning technology based on wireless technology, indoor wireless positioning has been widely used in industries and fields such as warehousing, security protection, education, logistics, and medical treatment. [0003] Existing indoor positioning methods, whether using regional positioning or precise positioning, because high-frequency wireless signals are affected by NLOS, that is, the non-linear propagation of high-frequency electromagnetic waves in space, there are blurred positioning area boundaries, misjudgment of positioning areas, and poor real-time positioning. Especially in places involving high confidentiality or high risk, such as prisons and important article warehouses, the boundary judgment of the positioning a...

AI Technical Summary

Problems solved by technology

[0003] Existing indoor positioning methods, whether using regional positioning or precise positioning, because high-frequency wireless signals are affected by NLOS, that is, the non-linear propagation of high-frequency electromagnetic waves in space, there are blurred positioning area boundaries, misjudgment of positioning areas, and poor real-time positioning. Especially in places involving high confidentiality or high risk, such as prisons and important warehouses, the boundary judgment of the positioning area is required to be very precise, which makes the existing positioning technology very restricted in use.

[0004] Some indoor positioning systems use access control. Although it solves the problem of accurate judgment of the area boundary, due to poor usability and the layout of access control is limited by the use environment, this form of indoor positioning system cannot be used in open areas or spaces with complex structures. GPS

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