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Directional Wi-Fi (Wireless Fidelity)-based wireless positioning system and method

A technology of wireless positioning system and positioning area, which is applied in the field of wireless positioning system, can solve the problems of inability to meet immediate requirements such as timely deployment and convenient use, and achieve the effects of meeting immediate requirements, avoiding early data collection work, and low cost

Inactive Publication Date: 2012-11-28
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

Therefore, the existing Wi-Fi positioning method system cannot meet the immediate needs of timely deployment and convenient use in emergency indoor environments.

Method used

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  • Directional Wi-Fi (Wireless Fidelity)-based wireless positioning system and method

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] figure 1 A schematic structural diagram of a positioning system based on directional Wi-Fi according to an embodiment of the present invention is shown. The system includes a client computer, a computing device, and two directional Wi-Fi access point devices. The directional Wi-Fi access point device may also be referred to as directional Wi-Fi AP (Access point) for short. In this embodiment, the directional Wi-Fi AP is composed of a common WiFi access point device plus a rotatable directional receiving antenna. In this positioning system, two Wi-Fi APs with rotating directio...

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Abstract

The invention provides a directional Wi-Fi (Wireless Fidelity)-based positioning system. Two Wi-Fi APs (Access Points) with rotary directional antennas are placed at the two sides of a positioning area to be used for transmitting wireless signals; a client is moved in the positioning area, simultaneously receives the wireless signals from each directional AP, and supplies the data related to the signals to a calculating device; and the calculating device analyzes and processes the data so as to calculate the position of the client and return the position information to the client, thereby positioning and tracking the client in real time. The system can be arranged on the site at any time and any place without construction on the site or in a room in advance. Moreover, large-scale preliminary data acquisition works are avoided, and the instant requirements in emergency occasions are met.

Description

technical field [0001] The present invention relates to a wireless positioning system, in particular to a Wi-Fi-based wireless positioning system Background technique [0002] In many emergency indoor situations, such as a fire scene, a personnel tracking and positioning system that can be deployed in time, is relatively safe and is convenient to use is required. Existing positioning methods and systems have their own limitations in emergency situations. For example, the GPS positioning system based on satellite communication needs to maintain a line of sight with the satellite, and cannot be positioned indoors or in a building environment. The positioning system based on the mobile base station depends on the mobile communication infrastructure, and its positioning accuracy depends on the distribution density of the base station towers. Currently, it cannot meet the indoor room level positioning accuracy requirements. The positioning methods using infrared rays and ultras...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
Inventor 刘军发陈益强杨华赵咪
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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