Clip-on wireless wearable microwave sensor for ambulatory cardiac monitoring
Name
Fletcher-2010-Clip-on wireless wea.pdf
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904.46 KB
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Checksum (MD5)
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Author(s)
Fletcher, Richard Ribon
Kulkarni, Sarang
Date Issued
August 2010
Journal
Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2010. EMBC 2010.
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Fletcher, R R, and S Kulkarni. “Clip-on wireless wearable microwave sensor for ambulatory cardiac monitoring.” IEEE, 2010. 365-369. Web. 3 Feb. 2012. Fletcher, R R, and S Kulkarni. © 2010 Institute of Electrical and Electronics Engineers
Version
Final published version
Abstract
We present a new type of non-contact sensor for use in ambulatory cardiac monitoring. The sensor operation is based on a microwave Doppler technique; however, instead of detecting the heart activity from a distance, the sensor is placed on the patient's chest over the clothing. The microwave sensor directly measures heart movement rather than electrical activity, and is thus complementary to ECG. The primary advantages of the microwave sensor includes small size, light weight, low power, low-cost, and the ability to operate through clothing. We present a sample sensor design that incorporates a 2.4 GHz Doppler circuit, integrated microstrip patch antenna, and microntroller with 12-bit ADC data sampling. The prototype sensor also includes a wireless data link for sending data to a remote PC or mobile phone. Sample data is shown for several subjects and compared to data from a commercial portable ECG device. Data collected from the microwave sensor exhibits a significant amount of features, indicating possible use as a tool for monitoring heart mechanics and detection of abnormalities such as fibrillation and akinesia.
MIT Department
Massachusetts Institute of Technology. Media Laboratory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/IEMBS.2010.5627972
