Design of portable electrocardiography (ECG) based on capacitive electrode

Kresna Devara, Fitriyanti Nur Aisyah, Aryanthera W. Ketut Vanda, Savira Ramadhanty, Nji Raden Poespawati, Retno Wigajatri Purnamaningsih

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The heart is one of the most vital organs in the human body that pumps blood. Therefore, it is very important to monitor the condition of the heart. The condition of a human heart can be diagnosed by measuring the heart rate frequency (beats per minute). We propose a design of a portable electrocardiography (ECG) based on capacitive electrodes for heart rate monitoring. The device consists of electrodes attached to a plastic sheet which is placed on a mattress bed under a patient's back. Before being processed by Arduino UNO microcontroller, the output signal of the electrodes is processed using signal-conditioning circuit consisting of instrumentation-amplifier circuit, filter, and non-inverting amplifier. The signal processing results obtained from the conditioning circuit are displayed on the LCD screen. The test results show that the QRS complex signal can be clearly detected. Various thickness of the patient cloth also produces different values. With this factor taken into account, cottons with varying thickness (from 0.2mm up to 0.8mm) are used to measure the heart rate signals. Measurements with varied cotton thickness shows that the thicker the clothing material is, the weaker and more fluctuative the cardiac signal read by the capacitive ECG design will be. To test the accuracy of the proposed design, the measurement result is compared to ECG PM 10 which is a commonly used device for heart rate monitoring. It shows that experiment on different subjects result in an average error of 0.435%. Based on the Association for the Advancement of Medical Instrumentation (AAMI)'s standard of maximum error (5%), the error rate of the proposed device is still within the range of tolerance.

Original languageEnglish
Title of host publication3rd Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices
Subtitle of host publicationProceedings of the International Symposium of Biomedical Engineering, ISBE 2018
EditorsPraswasti P.D.K. Wulan, Misri Gozan, Sotya Astutiningsih, Ghiska Ramahdita, Radon Dhelika, Prasetyanugraheni Kreshanti
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735418226
DOIs
Publication statusPublished - 9 Apr 2019
Event3rd International Symposium of Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices, ISBE 2018 - Jakarta, Indonesia
Duration: 6 Aug 20188 Aug 2018

Publication series

NameAIP Conference Proceedings
Volume2092
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference3rd International Symposium of Biomedical Engineering''s Recent Progress in Biomaterials, Drugs Development, and Medical Devices, ISBE 2018
Country/TerritoryIndonesia
CityJakarta
Period6/08/188/08/18

Keywords

  • Beat Per Minute (BPM)
  • capacitive electrode
  • ECG
  • Heart rate
  • portable

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