Human body detection method and device, and household appliance shutdown method and device

Abstract

The invention provides a human body detection method and device and a household appliance shutdown method and device, and relates to the field of wireless sensing. The method comprises the following steps: sampling channel state information (CSI) of each subcarrier of Wi-Fi communication in a target environment where a first household appliance is located for multiple times; generating a CSI amplitude time sequence matrix based on the sampled CSI, wherein each behavior in the CSI amplitude time sequence matrix is a CSI amplitude value of each subcarrier collected at the same sampling moment; obtaining a mean variance of the CSI amplitude time sequence matrix; performing human body detection on the target environment according to the mean variance of the plurality of CSI amplitude time sequence matrixes which are continuous in time; and in response to the detection that no person is in the target environment, controlling the first household appliance to be turned off. The method can detect whether there is a person in the target environment in real time, does not need to add special detection hardware, does not need to train in advance or carry out offline calibration, is low in complexity, is wide in detection range, can control the household appliances to be turned off under the condition of no person detection, and saves resources.

Description

technical field [0001] The present application relates to the field of wireless sensing, and in particular to a method and device for detecting a human body, and a method and device for shutting down home appliances. Background technique [0002] At present, more and more home appliances integrate Wi-Fi modules. By using Wi-Fi channel state information (channelstate information, CSI) for indoor occupant detection, it can be applied to many scenarios such as smart shutdown of home appliances and intrusion detection. In the technology of indoor personnel detection based on Wi-Fi channel state information, there are problems such as large amount of calculation, small detection range, and low practicability. Contents of the invention [0003] This application aims to solve one of the technical problems in the related art at least to a certain extent. [0004] For this reason, an object of the present application is to propose a human body detection method, by sampling the cha...

AI Technical Summary

Problems solved by technology

[0002] At present, more and more home appliances integrate Wi-Fi modules. By using Wi-Fi channel state information (channelstate information, CSI) for indoor occupant detection, it can be applied to many scenarios such as smart shutdown of home appliances and intrusion detection. In the technology of indoor personnel detection based on Wi-Fi channel state information, there are problems such as large amount of calculation, small detection range, and low practicability.

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