All Optical Health Monitoring System: An Experimental Study on Visible Light Communication in Biomedical Signal Transmis
In the biomedical signal analysis and transmission, procreation of radio frequency communication technology is recurrently perplexed by electromagnetic interference. This effect can be eliminated by using visible light as a medium of transmission. In this
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Abstract In the biomedical signal analysis and transmission, procreation of radio frequency communication technology is recurrently perplexed by electromagnetic interference. This effect can be eliminated by using visible light as a medium of transmission. In this work, Light Fidelity (Li-Fi) transmitter and receiver sections have been designed using white light emitting diode (LED) and photodiode, respectively. For demonstration, we transmitted electrocardiogram signal from Li-Fi transmitter to receiver and the performance has been analysed for various transmission distances. Further enhancement of this work has been proposed as an all-optical health monitoring system that is suitable for hospital environment. In hospitals, VLC is the efficient wireless data communication technology in health monitoring. VLC ensures secured, faster way of communication and use of unlicensed visible spectrum. This enhanced scheme uses biomedical sensors that detect specific biological, chemical, or physical changes that occur in a patient’s body. Biological data are transmitted by an array of LEDs. Biomedical signal processing in both transmitter and receiver sections is performed by Arduino unit. The proposed research work focuses on developing a high-speed eco-friendly local area communication network with low-cost, off-the-shelf components for interconnecting electronic devices within hospital environment.
Keywords Visible Light Communication (VLC) Light emitting diode (LED) Photodiode Light Fidelity (Li-Fi) Arduino unit Biomedical signal processing
C.R. Uma Kumari (&) S. Dhanalakshmi Department of Electronics and Communication Engineering, SRM University, Chennai, India e-mail: [email protected] © Springer Nature Singapore Pte Ltd. 2018 H.S. Saini et al. (eds.), Innovations in Electronics and Communication Engineering, Lecture Notes in Networks and Systems 7, https://doi.org/10.1007/978-981-10-3812-9_38
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C.R. Uma Kumari and S. Dhanalakshmi
1 Introduction Visible light communication (VLC) uses light in the visible region as a medium for transmission. VLC has some unique advantages such as security against hacking, as transmitted light is confined within the systems’ coverage area and also it is less hazardous to human health. Health monitoring system has drawn considerable attention since past few decades. With advancement in wireless technology, health monitoring system can be widely deployed to monitor health condition of a patient inside and outside the hospitals. VLC along with Free Space Optics (FSO) technology would play a vital role in future wireless communication domain. The FSO market has achieved a growth of 51.8% during the forecast period, and VLC market has faced 91.8% growth between 2015 and 2020. Sensors that form Internet of Things require fast data rates that could be achieved by either VLC or FSO. FSO makes use of ultraviolet (UV) rays, infrared (IR) rays, or visible light as a carrier of data, whereas VLC uses light under visible spectrum (380–780 nm). Visible light communication
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