Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring
There exists a distinct lack of publicly available literature addressing the most effective hardware design for photoplethysmography (PPG) devices for clinical and domestic applications. In this article, this problem was addressed by investigating the hardware design configuration of a PPG device, w...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/25/6/1875 |
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| author | Anneri Appel Rensu P. Theart |
| author_facet | Anneri Appel Rensu P. Theart |
| author_sort | Anneri Appel |
| collection | DOAJ |
| description | There exists a distinct lack of publicly available literature addressing the most effective hardware design for photoplethysmography (PPG) devices for clinical and domestic applications. In this article, this problem was addressed by investigating the hardware design configuration of a PPG device, with particular emphasis on the light source wavelength, light source brightness, number of light sources, photodetector lens shape, and sensor-to-skin contact pressure. A participant study was conducted to collect cardiovascular metric data from 110 participants with varying skin tones, which was used to determine the most promising hardware configuration of the PPG device. It was concluded that the device had little bias to skin tone, with only a 3.82 dB variance over all the skin tones tested. |
| format | Article |
| id | doaj-art-7b73c911d738415ebe2338fe8d111d92 |
| institution | Kabale University |
| issn | 1424-8220 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj-art-7b73c911d738415ebe2338fe8d111d922025-08-20T03:43:56ZengMDPI AGSensors1424-82202025-03-01256187510.3390/s25061875Investigating the Design of a Photoplethysmography Device for Vital Sign MonitoringAnneri Appel0Rensu P. Theart1Institute of Biomedical Engineering, Stellenbosch University, Matieland 7600, South AfricaDepartment of Electrical and Electronic Engineering, Stellenbosch University, Matieland 7600, South AfricaThere exists a distinct lack of publicly available literature addressing the most effective hardware design for photoplethysmography (PPG) devices for clinical and domestic applications. In this article, this problem was addressed by investigating the hardware design configuration of a PPG device, with particular emphasis on the light source wavelength, light source brightness, number of light sources, photodetector lens shape, and sensor-to-skin contact pressure. A participant study was conducted to collect cardiovascular metric data from 110 participants with varying skin tones, which was used to determine the most promising hardware configuration of the PPG device. It was concluded that the device had little bias to skin tone, with only a 3.82 dB variance over all the skin tones tested.https://www.mdpi.com/1424-8220/25/6/1875photoplethysmography (PPG)PPG sensoroptical sensorwearablessignal processing |
| spellingShingle | Anneri Appel Rensu P. Theart Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring Sensors photoplethysmography (PPG) PPG sensor optical sensor wearables signal processing |
| title | Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring |
| title_full | Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring |
| title_fullStr | Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring |
| title_full_unstemmed | Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring |
| title_short | Investigating the Design of a Photoplethysmography Device for Vital Sign Monitoring |
| title_sort | investigating the design of a photoplethysmography device for vital sign monitoring |
| topic | photoplethysmography (PPG) PPG sensor optical sensor wearables signal processing |
| url | https://www.mdpi.com/1424-8220/25/6/1875 |
| work_keys_str_mv | AT anneriappel investigatingthedesignofaphotoplethysmographydeviceforvitalsignmonitoring AT rensuptheart investigatingthedesignofaphotoplethysmographydeviceforvitalsignmonitoring |