Method for monitoring sleep in complicated environment based on channel state information

A channel state information and complex environment technology, applied in the field of wireless network applications, can solve the problems of low sleep quality stability and high cost, and achieve the effects of strong anti-interference, low cost, and enhanced environmental robustness

Inactive Publication Date: 2017-05-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of low stability or high cost of monitoring sleep quality

Method used

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  • Method for monitoring sleep in complicated environment based on channel state information
  • Method for monitoring sleep in complicated environment based on channel state information
  • Method for monitoring sleep in complicated environment based on channel state information

Examples

Experimental program
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Effect test

Embodiment

[0046] In order to test the performance of this method, a 30-square-meter room is selected, a TP-link router is used as the sending end, a laptop computer equipped with an Intel 5300 network card is used as the receiving end, and 5 people of different heights, ages, and weights The participant acts as a user, and the sending rate of the sender is always to send a data packet every 20ms.

[0047] Firstly, the accuracy of respiration monitoring under the condition of no interference is tested. Set the length of the sliding window to the number of data packets obtained within 20 seconds, and each sliding distance is 5 seconds. One user lay flat on the bed, another user stood still and kept away from the flat lying user and recorded the breathing rate of the flat lying user for 5 minutes. figure 2 It shows the experimental results of different users lying down and breathing. The accuracy of breathing detection refers to the ratio of the number of breathing rates that are consist...

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Abstract

The invention relates to a method for monitoring sleep in a complicated environment based on channel state information and belongs to the technical field of wireless network application. The method comprises the steps that Wi-Fi channel state information CSI in a target environment is firstly acquired through an existing Wi-Fi device, phase conversion is conducted on the CSI obtained after an outlier is removed to calibrate phase information, then the CSI without the outlier and CSI information obtained after phase calibration are used for judging whether an interference object moving around a user exists or not, interfered information is deleted if the moving object exists, accordingly accurate breathing information is obtained, the breathing frequency of the user is obtained according to the breathing information, and further the sleeping quality of the user is judged by analyzing the breathing frequency of the user. Compared with the prior art, the environment robustness and accuracy of sleep monitoring are greatly improved by adopting the method, the method does not depend on various sensors and wearable devices, and the method is low in cost, strong in anti-interference property and good in user experience and does not produce the privacy leakage problem.

Description

technical field [0001] The invention relates to a method for monitoring sleep, in particular to a method for monitoring sleep based on channel state information in a complex environment, which belongs to the technical field of wireless network applications, and specifically relates to the technical field of wireless network channel state information application methods for monitoring breathing state and sleep quality. Background technique [0002] As a necessary process of life, sleep is an important link for the body to restore, integrate and consolidate memory. Sleep disturbance refers to the abnormality of sleep quantity, the abnormality of sleep quality, or certain clinical symptoms occur during sleep, and sleep apnea (SAS) is exactly a kind of common clinical symptom. This symptom will not only seriously affect the sleep quality of patients, but also lead to high-risk diseases such as hypertension, heart disease, and cerebrovascular diseases. However, a large number o...

Claims

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Application Information

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IPC IPC(8): A61B5/00
CPCA61B5/4815
Inventor 李凡吴玥徐成
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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