Patient monitoring in the hospital management using Li-Fi

This paper focuses on the patient monitoring in the hospitals using the Li-Fi technology. Li-Fi stands for Light-Fidelity. Li-Fi technology, proposed by the German physicist Harold Haas, provides transmission of data through illumination by sending data through an LED light bulb that varies in intensity faster than the human eye can follow. Li-Fi is a bidirectional, high speed and fully networked wireless optical communication and is a form of visible light communication. The proposed model helps in the Patient monitoring in the hospitals and can be done by using the concept of Li-Fi instead of the Wi-Fi technology to avoid the frequency interference with the human body. Sensors such as temperature, heartbeat, glucose and respiration used in this model perform its respective functions. These sensors collect the data from the human body and are converted in to the digital form using the analog to digital converter and the outputs of these sensors are given to the microcontroller. The microcontroller that is used here is PIC16F877A. The output from the microcontroller is fed to the Li-Fi module which transmits the data in the form of light and the receiver end collects this data and then displays the graph for the different parameters using the PC. This report of the patient can be sent to the concerned person through e-mail.

I. Introduction

In the era of emerging technology, it is necessary to find better solutions for every activity. Patient monitoring can be done in a very efficient manner using the Li-Fi technology. Patient monitoring done by the Wi-Fi is slower when compared to the Li-Fi and it also has less bandwidth. Reliability is better in Li-Fi than Wi-Fi. Since transmission of data by Wi-Fi is through RF waves, there is a high possibility that these waves might affect the human body. The designation of these signals may be carcinogenic and this has been given by the World Health Organization. To solve this problem, Li-Fi (light fidelity) technology is used for healthy environment. Light fidelity is transmission of information through optical wireless medium. In this model, sensors such as heart beat, temperature, and glucose level and respiration sensor are used transmitted through the Li-Fi module. Rapid pulses are generated in the form of 0s and 1s. Silicon photo diode is used at the receiver end. Flickering of light takes place at the rate of hundreds of megabits per seconds. By using UART, the receiver is connected to computer. The information is displayed in computer can be sent as a mail to the person concerned. The range of the Li-Fi technology is 10m and secured communication is possible. The transmission of information by light through wireless is termed as Visible Light Communication (VLC)