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Tracking slow varying frequency in a noisy environment and applications in healthcare

A frequency, slow technology, applied in the field of digital signal processing of frequency, which can solve problems such as noise

Inactive Publication Date: 2017-05-31
ANALOG DEVICES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To combat noise, some monitors blindly discard sensor data that is too noisy and stop producing heart rate readings

Method used

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  • Tracking slow varying frequency in a noisy environment and applications in healthcare
  • Tracking slow varying frequency in a noisy environment and applications in healthcare
  • Tracking slow varying frequency in a noisy environment and applications in healthcare

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Embodiment Construction

[0017] Understanding the problem of noisy environments with heart rate monitors

[0018] Heart rate monitors are often provided adjacent to the skin of a living being. The monitor passively tracks or measures heart rate by sensing one or more aspects of the skin adjacent to the heart rate monitor. Due to the passive nature of this measurement, sensor data is subject to many sources of noise that can seriously affect a heart rate monitor's ability to determine an accurate heartbeat. These sources may include external disturbances to the sensor, internal noise of the sensor and / or heart rate monitor, motion that disrupts the sensor's ability to measure aspects of the skin, and the like. Furthermore, heart rate monitors are affected by the variability of the skin of different organisms as well as the variability of the skin and the environment during use of the heart rate monitor. All of these different sources and issues can have a detrimental effect on a heart rate monitor'...

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Abstract

Heart rate monitors are plagued by noisy sensor data, which makes it difficult for the monitors to output a consistently accurate heart rate reading. To address the issue of noise, some monitors blindly discard sensor data which are too noisy, and stop producing heart rate readings. In some cases, if the monitors do not discard the noisy sensor data, the noisy sensor data can cause irregular heart rate readings. As a result, noisy data can lead to inaccurate heart rate readings or no heart rate readings at all. The present disclosure describes an improved technique for qualifying an input signal, i.e., determining whether a portion of the input signal is likely to result in an accurate heart rate reading, by assessing whether the frequency information of the input signal resembles a heartbeat. The resulting improved heart rate monitor is robust in tracking the heart rate in a noisy environment.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of and priority to U.S. Nonprovisional Patent Application Serial No. 14 / 450,433, filed August 4, 2014, entitled TRACKING SLOW VARYING FREQUENCYIN A NOISY ENVIRONMENT AND APPLICATIONS IN HEALTHCARE, which is adopted in its entirety References are hereby incorporated. technical field [0003] The present invention relates to the field of digital signal processing, in particular to digital signal processing for tracking slowly moving frequencies in noisy environments. Background technique [0004] Modern electronics are ubiquitous in healthcare. For example, monitoring equipment systems are often provided with electronic components and algorithms to sense, measure and monitor living things. Monitoring equipment can measure vital signs such as breathing rate, oxygen levels in the blood, heart rate, and the like. Monitoring equipment is not only used in clinical settings, but monitorin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R23/00A61B5/04
CPCA61B5/02422A61B5/7217A61B5/725A61B5/7278
Inventor B·勒纳潘国林吴江S·德立瓦拉
Owner ANALOG DEVICES INC