Photoplethysmographic Logger with Contact Force and Hydrostatic Pressure Monitoring

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Pedro Santos (Author) Other; Vania Almeida (Author) Other; Joao Cardoso (Author) Other; Carlos Correia (Author) Other

Conference proceedings International

Title: 3rd Portuguese Bioengineering Meeting, ENBENG 2013 - Book of Proceedings

3rd Portuguese Bioengineering Meeting

Braga, PORTUGAL, FEB 20-23, 2013

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 7 Citations

Scientific classification

FOS: Engineering and technology > Environmental biotechnology

Other information

Authenticus ID: P-006-FJ4

DOI: 10.1109/enbeng.2013.6518437

Abstract (EN): Oxygen saturation is a key parameter for assessing a patient condition. The present work aims to develop a stand-alone pulse oximeter and photo plethysmographic system. In addition, it incorporates a force sensor and a set of accelerometers to measure the contact force and the finger height offset relatively to the heart. Both the design of hardware and the development of firmware are presented. Currently, the system is able to retrieve a stable photoplethysmographic waveform and compute the oxygen saturation in real time. Signals acquired in a healthy subject led to a value of 91.5 +/- 1.1%. Both the height offset of the finger and the contact force between the finger and the probe proved to have influence in the photoplethysmographic waveform as well as in the oxygen saturation results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6