Contact and Non-Contact methods of Photo Plethysmography
Deepakfranklin P1, Krishnamoorthi M2, Kalamani M3
1Deepakfranklin P, Assistant Professor, Department of Electrical and Electronics Engineering, Sriram Engineering College, Chennai, (Tamil Nadu), India.
2Krishnamoorthi M, Associate Professor, Department of Computer Science and Engineering, Bannari Amman Institute of Technology, Sathyamangalam (Tamil Nadu), India.
3Kalamani M, Associate Professor, Department of Electronics and Communication Engineering, Bannari Amman Institute of Technology, Sathyamangalam (Tamil Nadu), India.
Manuscript received on 13 December 2018 | Revised Manuscript received on 22 December 2018 | Manuscript Published on 30 December 2018 | PP: 378-383 | Volume-8 Issue-2S, December 2018 | Retrieval Number: 100.1/ijeat.B10771282S18/18©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Today there are several equipment to measure various physiological parameters of human, some of them are compact and most of them are huge. In order to monitor a person’s health properly it is not adequate to measure the physiological parameter in laboratory alone, it has to be in regular basis for a considerable duration. One of the most preferred and desirable technique is photo plethysmography (PPG). Plethysmography is a volumetric measurement of organ. In PPG the signal recorded is obtained by the information carried by the light that is either reflected or passes through the veins, the light intensity may vary depending on the blood volume. It is a non-invasive method and gives information on cardiac vascular system. This survey specially focuses on various parameters that can be derived from PPG, methods to detect these parameters from PPG and possible techniques used to measure PPG. Discussion will also throw some light on difficulties, disadvantages and future enhancements that are in photo plethysmography. A vast collection of sample data is necessary to give a result on the parameters obtained from PPG which are provided by various websites.
Keywords: Photo Plethysmography, Blood Volume, Physiological Parameters, Infrared Light, Artery, Cardiac Vascular System, Ambient Light.
Scope of the Article: Probabilistic Models and Methods