In this paper the implementation of Li-Fi technology in classrooms has been investigated. It is well known that the visual information is better perceived by the brain as compared with the textual information. Using visuals to explain a concept helps student get a better perception about the topic. To ensure the best of the visual experience, there is a big need of an efficient way of communication between the devices used by students and the teacher.The traditional methods like Wi-Fi or wired connections are not much efficient due to the speed limitation and other factors. Light fidelity, also known as Li-Fi is a type of data transmission technology which uses light rays to transmit data. By implementation of this technology, high volume of data can be transmitted at extremely high speed as it gives higher bandwidth. It also ensures efficiency, security, as well as the mobility of the device. Hence, we are looking to implement this technology to enhance the learning experience of the students. Every student gets a visual input on what, when, where and how anything happens and the concepts are understood easily and thoroughly. Also, it is cheap and safe to the human body.
In recent days, Wireless Power Transfer (WPT) and harvesting energy received lots of attentions due to the necessity of having a flexible, suitable and secure source of energy. With the explosion of wireless technologies including wireless sensor network (WSN) like internet of things, such intelligent systems had highlighted this need. Wireless power transfer is a key technology to enable any device operation without replacing their batteries, often challenging due to cost of replacement and the difficulty to reach inaccessible areas. Anyhow wireless power transfer is being considered as eco-friendly. This also removes the need to dispose dead batteries. Inductive coupling can be used to charge the low power devices quickly and effectively without the help of wires. This method is done by using charging a resonant coil from AC and then transmitting subsequent power to the resistive load. In this case, oscillating circuit is used in the conversion of DC to AC in order to transmit the magnetic field by passing frequency and inducing the receiver coil. The system is designed and constructed as two parts. They are Transmitter part and Receiver part. To calculate the inductive coupling between the transmitter oil and receiver coil, Ampere’s Law, Biot-Savart’s Law and Faraday’s Law are used as per the requirement.
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