US 2020/0267496 A1 · EARLY WARNING METHOD AND DEVICE BASED ON WIFI SIGNAL STRENGTH DISTURBANCE, AND STORAGE MEDIUM

Abstract

The present disclosure provides an early warning method and an early warning device based on WIFI signal strength disturbance, and a storage medium. The early warning method includes receiving and analyzing WIFI signals in a monitoring area in real time to obtain amplitude and phase of a current WIFI signal in the monitoring area; determining whether the amplitude and the phase of the current WIFI signal are disturbed according to a difference between the amplitude and the phase of the current WIFI signal and those of a previous WIFI signal; and sending out an early warning signal when it is determined that the amplitude and the phase of the current WIFI signal are disturbed.

Claims12

Dependent claims

An early warning method based on wireless fidelity (WIFI) signal strength disturbance, comprising:

receiving and analyzing WIFI signals in a monitoring area in real time to obtain amplitude and phase of a current WIFI signal in the monitoring area;
determining whether the amplitude and the phase of the current WIFI signal are disturbed according to a difference between the amplitude and the phase of the current WIFI signal and amplitude and phase of a previous WIFI signal;
and
sending out an early warning signal in response that it is determined that the amplitude and the phase of the current WIFI signal are disturbed.

1 more element

An early warning device based on WIFI signal strength disturbance, comprising:

an analysis module configured to receive and analyze WIFI signals in a monitoring area in real time to obtain amplitude and phase of a current WIFI signal in the monitoring area;
a determining module configured to determine whether the amplitude and the phase of the current WIFI signal are disturbed according to a difference between the amplitude and the phase of the current WIFI signal and amplitude and phase of a previous WIFI signal;
and
an early warning module configured to send out an early warning signal in response that it is determined that the amplitude and the phase of the current WIFI signal are disturbed.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

16/645,548Filed 7 Sep 2018

Priority

CN 201710799597.47 Sep 2017

Published

20 Aug 2020

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

G01S 13/003
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose…:…
H04W 4/021
Services making use of location information: services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
G01S 13/04
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems: systems determining presence of a target
G08B 13/2491
By interference with electromagnetic field distribution: intrusion detection systems, i.e. where the body of an intruder causes the interference…

Early warning method and device based on wifi signal strength disturbance, and storage medium

Life of this patent

Early warning method and device based on wifi signal strength disturbance, and storage medium

Life of this patent

Abstract

Claims12