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Non-contact physiologic motion sensors and methods for use

A motion sensor and motion technology, applied in the field of radar-based physiological sensors, can solve problems such as inability to separate

Inactive Publication Date: 2011-05-04
KAI PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing systems do not adequately separate the desired part from the disturbing part

Method used

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  • Non-contact physiologic motion sensors and methods for use
  • Non-contact physiologic motion sensors and methods for use
  • Non-contact physiologic motion sensors and methods for use

Examples

Experimental program
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Embodiment approach

[0308] An embodiment of a method for separating a plurality of cardiopulmonary signals is shown in FIG. 14 , the method comprising:

[0309] 1. As shown in block diagrams 1401a to 1401d, the method includes: determining the frequency component f=f of the cached data most likely to contain cardiopulmonary signals 1 , f 2 ,..., f n . In some embodiments, these frequency components may be determined by measuring the power spectral density of the channel combination and applying a cost function to the output. In some embodiments, the power spectral density of the channel combination can be determined by obtaining the power spectral densities from the receivers and adding them to obtain the combined spectrum. In some embodiments, a low pass filter is applied before obtaining the power spectral density from each receiver. In some embodiments, the cut-off frequency of the low-pass filter is 1 Hz.

[0310] 2. As shown in block diagram 1402, the method further includes: identifyin...

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Abstract

A radar-based physiological motion sensor is disclosed. Doppler-shifted signals can be extracted from the signals received by the sensor. The Doppler-shifted signals can be digitized and processed subsequently to extract information related to the cardiopulmonary motion in one or more subjects. The information can include respiratory rates, heart rates, waveforms due to respiratory and cardiac activity, direction of arrival, abnormal or paradoxical breathing, etc. In various embodiments, the extracted information can be displayed on a display.

Description

[0001] Related Application Cross Reference [0002] This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 61 / 072,983, filed April 3, 2008, entitled "Doppler Radar System for Local and Remote Respiration Signals Monitoring" (Attorney Docket No. KSENS.021PR); U.S. Provisional Patent Application No. 61 / 072,982, entitled "Method for Detection of Cessation of Breathing," filed April 3, 2008 (Attorney Docket No. KSENS.023PR); 2008 U.S. Provisional Patent Application No. 61 / 123,017, filed April 3, 2008, entitled "Method for Detection of Motion Interfering with Respiration" (Attorney Docket No. KSENS.024PR); U.S. Provisional Patent Application No. 61 / 123,135 (Attorney Docket No. KSENS.025PR) for "Method for Detection of Presence of Subject"; U.S. Provisional Patent Application No. 61 / 125,021 (Attorney Docket No. KSENS.028PR); U.S. Provisional Patent Application No. 61 / 125,019, filed April 21, 2008, entitled "Monitoring Physical Activity wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/02
Inventor 艾米·德罗伊特库尔朴秉权安德里亚·元安德尔斯·霍斯特·马德森查尔斯·艾尔欧兰尼汤米·成
Owner KAI PHARMA
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