Microwave doppler sensor in heart rate detection and analysis for mobile devices
Cardiac anomalies are one of the primary reasons for rapid human health degradation which may eventually lead to death. Therefore, detecting early symptoms will improve the chance of full recovery after treatment of the cardiac anomalies. An efficient heart rate detection approach can contr...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/55018 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Cardiac anomalies are one of the primary reasons for rapid human health degradation
which may eventually lead to death. Therefore, detecting early symptoms will
improve the chance of full recovery after treatment of the cardiac anomalies. An
efficient heart rate detection approach can contribute greatly to not only long-term
bedside monitoring, but also for medical emergency.
In this report, the author discusses existing alternative approaches to heart rate
detection and proposes a new contactless approach. The new approach is based on
the Doppler Effect which uses frequency change in microwaves to monitor the heart
movement. A continuous wave Doppler radar was used to collect the microwave
signals and a Matlab program designed by the author was used to convert the
microwave signals into a velocity vs. time graph. The graphic user interface was
implemented in Visual C# to facilitate mobile access through the web portal.
From the results, the author interprets the relationship between the velocity vs. time
graph and the actual physical movement of the heart. Using the relationship, the
author detects the heart rate and also suggests ways to detect cardiac anomalies.
Finally, the usefulness of the proposed approach is discussed and recommendation
for further work is suggested. |
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