N.M.A.M. Institute of Technology

About: N.M.A.M. Institute of Technology is a based out in . It is known for research contribution in the topics: Thin film & Band gap. The organization has 789 authors who have published 806 publications receiving 4998 citations.

Visible Light Communication

Abstract: Light Emitting Diodes are set to penetrate many areas of everyday life. An interesting property of these devices in addition to their lightening capabilities, is that they can also be utilised for data transmissions as well. LED's require low power for their operation and have very high switching speeds. This dual purpose application can reduce our dependency on the densely used means of communication the Radio frequency communication. The project aims to build a system which carries out communication using visible light that are employed for indoor illuminations. The higher bandwidth of the visible light is exploited for high speed data transmissions. For the communication to be full duplex it requires a downlink and an uplink. The downlink is implemented using the visible light. Whereas the uplink is provided using Infrared LED's, as visible light would serve no purpose of illumination. Furthermore, the IR link also eliminates the chance of interference. When communication is carried out through visible light there are problems associated with it. The data transmission rates should be high enough so that flickering of the LED's should not be detected. Sometimes it is possible for complete fadeout of the signals. To protect the data integrity the data should be framed, so as to detect lost signals and to ensure correct transmission and reception of the data. Computer network protocols like stop and wait algorithms [1] are employed to solve this problem. The data can be of any form such as text, an audio, image or the video. This project shows how visible light can be used to transfer text data from one computer to the other computer. The computers are used as the end device. The computers with the help of Python [2] can be used to interface software to the hardware.

Significance of Tribocorrosion in Biomedical Applications: Overview and Current Status

Abstract: Recently, “tribocorrosion,” a research area combining the science of tribology and corrosion, has drawn attention from scientists and engineers belonging to a wide spectrum of research domains. This is due to its practical impact on daily life and also the accompanying economical burdens. It encompasses numerous applications including the offshore, space, and biomedical industry, for instance, in the case of artificial joints (Total Hip Replacement, THR) in orthopedic surgery, where implant metals are constantly exposed to tribological events (joint articulations) in the presence of corrosive solutions, that is, body fluids. Keeping the importance of this upcoming area of research in biomedical applications in mind, it was thought to consolidate the work in this area with some fundamental aspects so that a comprehensive picture of the current state of knowledge can be depicted. Complexity of tribocorrosion processes has been highlighted, as it is influenced by several parameters (mechanical and corrosion) and also due to the lack of an integrated/efficient test system. Finally a review of the recent work in the area of biotribocorrosion is provided, by focusing on orthopedic surgery and dentistry.

Development scheme and key technology of an electric vehicle: An overview

Abstract: Environmental protection and energy conservations are the main concern of 21st century which has now accelerated the pace to plan and develop electric vehicle technology. The electric vehicles (EVs) offer a zero emission, new automobile industry establishment, and economic development, efficient and smart transportation system. Also EVs equipped with artificial intelligence system will also improve the present traffic safety and road utilization. The EV system consist of energy storage devices such as various types of batteries, fuel cells, ultra-capacitors along with electric propulsion, body of the vehicle and energy management system with the diversified technology of electrical, electronics, mechanical, automotive and chemical engineering. The objective of electric vehicle is to produce commercial viable range, efficient performance, and comfort with safety and reliable operations at cheaper price than its counterpart the internal combustion EV. Currently the permanent magnet brushless direct current motors are the present choice of automobile industries and researchers because of its high power density, compact size, reliability, and noise free and minimum maintenance requirements. In this paper an overview of electric vehicle technology and key strategy is presented. The present state of art permanent magnet brushless DC motor drive for the electric vehicle application is also presented in this paper. In addition the energy storage devices, smart energy management system unit for EV and commercial aspects and benefits of EV are highlighted.