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Wearable Heart Rate Measuring Unit
Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

Despite having the numerous evolved heart rate measuring devices and progress in their development over the years, there always remain the challenges of modern signal processing implementation by a comparatively small size wearable device. This thesis paper presents a wearable reflectance photoplethysmography (PPG) sensor system for measuring the heart rate of a user both in steady and moving states. The size and, power consumption of the device are considered while developing, to ensure an easy deployment of the unit at the measuring site and the ability to power the entire unit with a battery .The selection of both the electronic circuits and signal processing techniques is based on their sensitivity to PPG signals, robustness against noise inducing artifacts and miniaturization of the entire measuring unit. The entire signal chain operates in the discrete-time, which allows the entire signal processing to be implemented in firmware on an embedded microprocessor. The PPG sensor system is implemented on a single PCB that consumes around 7.5mW of power. Benchmarking tests with standard heart rate measuring devices reveal that the developed measurement unit (combination of the PPG sensor system, and inertial measurement unit (IMU) developed in-house at Acreo Swedish ICT, and a battery) is comparable to the devices in detecting heart rate even in motion artifacts environment.

This thesis work is carried out in Acreo Swedish ICT, Gothenburg, Sweden in collaboration with MidSweden University, Sundsvall, Department of Electronics Design. This report can be used as ground work for future development of wearable heart rate measuring units at Acreo Swedish ICT.

Place, publisher, year, edition, pages
2014. , 75 p.
Series
Research report in electronics
Keyword [en]
PCB, PC, photoplethysmography, motion artifacts, PPG signals, benchmarking.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-23351OAI: oai:DiVA.org:miun-23351DiVA: diva2:761214
Subject / course
Electronics EL1
Educational program
International Master's Programme in Electronics Design TELAA 120 higher education credits
Presentation
2014-05-28, S113, Holmgatan, Sundsvall, 10:00 (English)
Supervisors
Examiners
Available from: 2014-11-11 Created: 2014-11-05 Last updated: 2014-11-11Bibliographically approved

Open Access in DiVA

WearableHeartRateMeasuringUnit(2233 kB)1590 downloads
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File name FULLTEXT01.pdfFile size 2233 kBChecksum SHA-512
fe4ce1ce76ba6d518499a44f00f776e608b615f2ee85f47ec1d8d8cef1d712fdb557534fa3d8333bd227b30ecc49566fe2689b0b7dcc6cacfad84f02a39400e1
Type fulltextMimetype application/pdf

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CiteExportLink to record
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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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