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

A human body detection and human body technology, applied in the field of wireless sensing, can solve the problems of small detection range, low practicability, and large amount of calculation

Pending Publication Date: 2022-01-07
MR SEMICON LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

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Embodiment approach

[0131] Figure 7 It is an exemplary implementation of a method for shutting down a household electrical appliance proposed by the present application, such as Figure 7 As shown, the shutdown method of the home appliance includes the following steps:

[0132] S701. Sampling the channel state information CSI of each sub-carrier of Wi-Fi communication in the target environment where the first household appliance is located multiple times.

[0133] The embodiment of the present application is applied to the first household appliance as an example, and a Wi-Fi module is installed inside it. Such as Figure 8 As shown, the first household appliance can use the Wi-Fi module to receive the Wi-Fi signal sent by the Wi-Fi transmitter to obtain the channel state information CSI, and the Microcontroller Unit (MCU) in the Wi-Fi module operates the indoor personnel Detection algorithm to judge whether there are people in the target environment. Exemplarily, the first household applianc...

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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...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
CPCH04B7/0626H04B7/0854
Inventor 宋亚东
Owner MR SEMICON LTD
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