New PDF release: Ambulation Analysis in Wearable ECG

By Subhasis Chaudhuri

ISBN-10: 1441907238

ISBN-13: 9781441907233

Ambulation research in Wearable ECG

Subhasis Chaudhuri, Tanmay Pawar, Siddhartha Duttagupta

Ambulation research in Wearable ECG demonstrates why, as a result of fresh advancements, the wearable ECG recorder substantiates an important innovation within the healthcare field.

About this book:

Examines the viability of wearable ECG in cardiac monitoring

Includes chapters written through practitioners who've in my view built such to put in writing concerning the details

Bridges the space among and algorithmic advancements with chapters that in particular talk about the facets and their corresponding calibration issues

Presents an invaluable textual content for either practitioners and researchers in biomedical engineering and similar interdisciplinary fields

Assumes easy familiarity with electronic sign processing and linear algebra

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Extra resources for Ambulation Analysis in Wearable ECG

Example text

Signal conditioned ECG should be digitized for the purpose of post processing. 40 3 Hardware Development of Wearable ECG Devices (a) (b) Fig. 8. 1, designed in IIT Bombay, (a) clean ECG signal (b) effect of strong 50Hz interference on ECG signal Post processing of ECG data is not only used for detection of abnormalities but also sometimes for further noise and artifact removal, specifically in portable and personal health care devices. For example, mains supply interference or motion artifacts can be savior when the patient prefers more freedom in mobility and movements.

Right leg drive circuit is also used in bedside electrocardiograph systems [139]. 4 Signal Conditioning 33 Fig. 4. Right leg drive circuit(Used with permission from Biosemi Inc. [85]) For further amplification and filtering of ECG signals more often INA is followed by a LPF (lowpass filter). This lowpass filter is an active filter made by on-chip opamps or OTAs (operational transconductance amplifiers) and discrete resistors and capacitors. 1. However it can be programmable. The overall gain of the analog ECG signal conditioning module is also programmable, usually in the range of 200 to 1000.

In [40], it has also been shown that the signal acquired from an optical sensor placed at the electrode site can represent the deformation in shape of electrode due to motion and hence can be used for removal of motion artifact. A method of deriving a reference signal using a magneto-resistive sensor and a 3-axes accelerometer for adaptive filtering of motion artifact are proposed in [131]. Apart from adaptive filtering, there are several other techniques used for calculating an estimate of the cardiac cycle by suppressing the noise.

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Ambulation Analysis in Wearable ECG by Subhasis Chaudhuri


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