Low cost Pulse Oximeter with Smartphone Connectivity

Abstract

Oxygen is an essential source of living for all of us. This oxygen is utilized by each and every part of the body as it is absorbed by the arterial blood and travels in each and every cell of the body. If this blood oxygen levels get dropped, it would become an extremely severe condition for a person. In the present research, a system is designed that can measure these vital signs of body i.e. blood oxygen saturation levels (SpO₂) and pulse rate of the person in a cheap and efficient way. The designed system provides a connection of the system with the smartphone so that the measurements can be read accurately and stored and shared in a profound way. The designed device is figure adjustable and does not allow surrounding lights to get through it. The designed device is compared with the commercially available device and found to be very accurate with the measurements of commercially available device for the measurements of designed device.