karthividhyalaya school in kumbakonam

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Gram Sandesh Transmission-A Web Based Information System for Farmers

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Gram Sandesh Transmission-A Web Based Information System for Farmers Agriculture is the fortitude for our country India. A large population of the country depends on farming related activities for their sustenance. However, it is perceived that there is lack of a handy agronomical information system for the end users. Information and data is available but does not reach the end-user on time [1]. Safekeeping this fact into consideration; Gram Sandesh Transmission has been developed so as to facilitate the flow of useful information required for farming [2]. In last few decades the trade of farming has changed rapidly. Apart from the traditional problems in farming, farmers are now facing competition from global market. They strictly need to adhere quality standards set by World Health Organization to trade in international market. An era has arrived where key to success is accurate, timely information and accurate judgment placed upon it [2], [3]. Present generation predominan...
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ANDROID APPLICATION CONTROLLED REMOTE ROBOT OPERATION

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A HYBRID BI-DIRECTIONAL WIRELESS EV CHARGING SYSTEM TOLERANT TO PAD MISALIGNMENT

project center in trichy Electric vehicles (EVs) are becoming increasingly popular as a means of future transport for sustainable living. However, wireless charging of EVs poses a number of challenges related to interoperability, safety, pad misalignment etc. In particular, pad-misalignments invariably cause changes in system parameters which in turn lead to increase in losses as well as reduction in power throughput, making the charging process long and inefficient. Consequently, wireless charging systems that are less sensitive to pad-misalignments have become preferable. This paper, therefore, presents a hybrid Wireless Power Transfer (WPT) system that charges EVs at constant rate despite large misalignments between charging pads. The proposed charging system uses a combination of two different resonant networks to realize a constant and efficient charging process. A mathematical model is also developed, showing as to how the two resonant networks can be combined to compensa...
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