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Wireless real time location system and method

A real-time positioning and wireless technology, applied in wireless communication, electrical components, security devices, etc., can solve problems such as affecting positioning accuracy, unable to effectively solve the influence of multi-path effect positioning accuracy, and multi-path effect affecting positioning accuracy, etc. achieve the effect of improving accuracy

Inactive Publication Date: 2011-11-09
北京烽火联拓科技有限公司
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Problems solved by technology

The positioning data received by the reader is not only related to the distance between the tags, but also affected by the differences in equipment and installation locations (including installation height, whether there is occlusion, etc.). In this typical architecture, these influencing factors will be Directly affect the positioning accuracy
[0008] Finally, whether it is indoor or outdoor positioning, the multipath effect will greatly affect the positioning accuracy. In the previous positioning system, the influence of multipath effect on the positioning accuracy cannot be effectively solved.

Method used

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Embodiment Construction

[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0025] The technical solution of this specific embodiment is that the wireless positioning data communication between the tag and the reader adopts three interactions under different channels, realizes data security through triple authentication, and realizes functions of identity authentication and positioning. In order to cooperate with the three interactions between the reader and the tag, the wireless real-time positioning system used includes the tag, the reader and the positioning engine. The reader includes three radio frequency modules and three antennas. The tag and the reader pass through three The radio frequency module and three antennas establish three channels, and the reader is connected with the positioning engine.

[0026] figure 1 It is a flow chart of wireless real-time positioni...

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Abstract

The invention discloses a wireless real time location system and a wireless real time location method. The wireless real time location system comprises a label, a reader-writer and a location engine. The reader-writer comprises three radio frequency modules and three antennae. The label establishes three channels with the reader-writer by the three radio frequency modules and the three antennae. The reader-writer is connected with the location engine. The label and the reader-writer achieve data security and finish location computation by triple authentication. By the technical scheme provided by the invention, the security of data communication between the label and the reader-writer can be achieved, the capacity of the label can be increased and the location accuracy can be improved.

Description

technical field [0001] The invention relates to the technical field of positioning, in particular to a wireless real-time positioning system and method. Background technique [0002] Real Time Location System (RTLS) refers to a system that locates targets in real time or near real time in a designated space (office building, venue, urban area, the world) through wireless communication technology. The location information of the target is obtained by measuring the physical characteristics of radio waves. [0003] The wireless real-time positioning system is a positioning system based on ranging technology, which can be divided into positioning by receiving positioning data (received signal strength indicator, RSSI), positioning by time of arrival (TOA) or time difference on arrival (time difference on arrival, TDOA) positioning, angle of arrival (AOA) positioning and other technical solutions. The basic principle is that the tag sends a wireless signal to the reader accordi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/02H04W64/00
Inventor 张革军吕丰训
Owner 北京烽火联拓科技有限公司
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