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A link-level moving target tracking method based on wifi

A moving target, one-to-one technology, used in location-based services, diversity/multi-antenna systems, transmission monitoring, etc., can solve the problem of being easily blocked by obstacles, easy to leak privacy, limited by high reliability and high density of sensor networks Deployment placement and other issues to avoid unreliability

Active Publication Date: 2021-11-23
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the target detection technology using the camera is easy to leak privacy and be easily affected by obstacles; the high reliability of the sensor network is limited by the high-density deployment of equipment and the placement of sensors; technologies such as ultra-bandwidth require special equipment support

Method used

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  • A link-level moving target tracking method based on wifi
  • A link-level moving target tracking method based on wifi
  • A link-level moving target tracking method based on wifi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] A method for tracking a moving target area based on WiFi, comprising the following steps:

[0038] Step 1: Receive CSI data in real time;

[0039] In this step, there are multiple receivers and transmitters in the indoor environment, including smart devices or professional signal acquisition equipment, and each pair of receivers and transmitters is numbered, and the receiver receives the CSI sequence signal sent by the transmitter in real time;

[0040] First, collect environmental data for a period of time. At this time, there is no target movement in the environment. Record this segment of data as silent data, and use the silent data to calculate the silent thresholds of different pairs of transceivers;

[0041] Step 2: Calculate the signal data fluctuation of each pair of transceivers in the environment;

[0042] In this step, there are multiple pairs of transceivers in the indoor environment, and the receiver receives the CSI data information in real time, uses Ham...

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PUM

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Abstract

The invention is a WiFi-based moving target area tracking method, which can be applied to the fields of smart home, security and the like. It is mainly to extract the power information of the reflected signal of the moving target, judge whether the moving target is close to or far away from the direct signal path of the transceiver pair, combine the received data fluctuation of the transceiver pair, judge the location of the moving target area, and count the area of ​​​​the moving target within a period of time Location information to achieve regional target area tracking. This method can make full use of the WiFi equipment in the indoor environment, and does not need to purchase additional equipment.

Description

technical field [0001] The invention relates to the fields of smart home and security, in particular to a method for tracking a moving target area based on WiFi. [0002] technical background [0003] The Internet of Things is playing an increasingly important role in life, and smart home, as an important research hotspot in the Internet of Things, has received extensive attention. In order to make the smart home more intelligent, it is necessary to accurately detect the passive moving objects existing in the environment. Using ordinary equipment to detect the location of people in the environment in real time not only enables smart homes to better interact with indoor people, but is also good for enterprise security. [0004] The existing indoor target moving area tracking technology uses cameras, sensor networks, ultra-bandwidth, etc. Among them, the target detection technology using the camera is easy to leak privacy and be easily affected by obstacles; the high reliabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B17/30H04B17/309H04B17/318H04W4/02H04W4/021
CPCH04B7/0626H04W4/02H04W4/021H04B17/30H04B17/309H04B17/318
Inventor 田增山曾维周牧金悦谢良波王勇
Owner CHONGQING UNIV OF POSTS & TELECOMM