Cell phone based voting machine is capable of saving considerable printing stationery and transport of large volumes of electoral material. It is easy to transport, store, and maintain. It completely rules out the chance of invalid votes. Its use results in reduction of polling time, resulting in fewer problems in electoral preparations, law and order, candidates' expenditure, etc. and easy and accurate counting without any mischief at the counting centre.
Our cell phone based voting machine consists of microcontroller ATMEL AT89S51, a DTMF decoder CM8870C, a memory storage device EEPROM. DTMF is sent to the microcontroller which is decoded by CM8870C and the password is fed with the candidate number. The EEPROM is used to store the memory in case of power failure.This project is based on assembly language programming. The software platform used in this project are Keil uVision3 and SPIPGM37.

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The scope of electric powered unmanned aerial vehicle (UAV) missions is primarily constrained by the relatively low flight endurance that is characteristic of electric powered UAVs. The purpose in utilizing solar energy to power UAVs is to increase UAV endurance capabilities and ultimately achieve indefinite sustained flight. Traditional solar powered UAVs are designed to statically fix the photovoltaic (PV) cells on the top surface of the wing, keeping the cells virtually parallel to the earth’s horizontal plane during normal flight. This puts significant restrictions on both where and what time of year a solar powered UAV is able to capture enough energy from the sun for the PV cells to be advantageous.
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Engineering Ebook: Practical Interfacing in the Laboratory: Using a PC for Instrumentation, Data Analysis and Control

The book contains five chapters, covering digital tools, analog tools, conversion between analog and digital signals, sensors and actuators, and data analysis and control. The 27 laboratory exercises can be used either in a college-level laboratory course or as working examples for practicing engineers and scientists who wish to apply sensor, low-level amplification, and microcomputer principles in their work in a practical and immediate way.
This material was developed for two one-semester laboratory courses in the Electrical Engineering and Computer Science Department at the University of California in Berkeley, EECS 145L: “Electronic Transducer Laboratory” and EECS 145M: “Microcomputer Interfacing Laboratory.” The purpose of these two courses is to provide upper-level undergraduate students with the tools needed to sense and control “real-world” quantities, such as temperature and force, as well as to display the results of “real-time” analyses, such as least-squares fitting, the Student’s t test, fast Fourier transforms, digital filtering, etc. It is assumed that the students have had some exposure to elementary analog and digital electronics, differential calculus and linear algebra, and the C programming language.

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Engineering Ebook: Design of Electrical Services for Buildings 4th Edition

Building services engineers to be reasonably aware of the systems in use, and the duties that they perform.The pace of change of legislation, introduction of European Standards, is ever increasing. I have left the academic parts of the book virtually unchanged, with the exception of changes in terminology.
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Engineering Ebook: Practical Electronics Handbook, Sixth Edition

The book has been designed to include within a reasonable space most of the information that is useful in day-to-day electronics together with brief explanations which are intended to serve as reminders rather than full descriptions. In addition, topics that go well beyond the scope of simple practical electronics have been included so that the reader has access to information on the advanced technology that permeates so much of modern electronics.
Although the book is not intended as a form of beginners’ guide to the whole of electronics, the beginner will find much of interest in the early chapters as a compact reminder of electronic principles and circuits. The constructor of electronic circuits and the service engineer should both find the data in this book of considerable assistance, and the professional design engineer will also find that the items brought together here include many that will be frequently useful and which would normally be available in collected form in much larger volumes.

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Engineering Ebook: Handbook of advanced electronic and photonic materials and devices

Polyconjugated carbon chains consist of alternating single and double bond. The electrons are highly delocalized and easily polarizeble, features that play important roles in the electrical and optical properties of polyconjugated systems, making them rather different from conventional electronic systems. Moreover, the intrinsic quasi-one-dimensional nature and the extent of both intra and interchain delocatlization of electrons are important for the structural, electrical, and optical properties of polyconjugated systems.

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Engineering Ebook: Handbook of Energy Engineering 5th Edition

The main difference between standards, codes and regulations is an increasing level of enforceability of the various design parameters. A group interested parties, vendors, trade organizations, engineers, designers, citizens, etc. may develop a standard in order to assure minimum levels of performance. The standard acts as a suggestion to those parties involved, but is not enforceable until it is codified by a governing body.

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Engineering Ebook: Power Electronics Handbook, 2nd Edition

Power electronics has already found an important place in modern technology and has revolutionized control of power and energy. As the voltage and current ratings and switching characteristics of power semiconductor devices keep improving, the range of applications continues to expand in areas such as lamp controls, power supplies to motion control, factory automation, transportation, energy storage, multi-megawatt industrial drives, and electric power transmission and distribution. The greater efficiency and tighter control features of power electronics are becoming attractive for applications in motion control by replacing the earlier electro-mechanical and electronic systems. Applications in power transmission include high-voltage dc (VHDC) converter stations, flexible ac transmission system (FACTS), and static-var compensators. In power distribution these include dc-to-ac conversion, dynamic filters, frequency conversion, and Custom Power System.
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Engineering Ebook: A Practical Guide to the Wiring Regulations:

The Institution of Electrical Engineers and the National Inspection Council for Electrical Installation Contracting I been asked, and attempted to answer, numerous questions over the years relating to the regulatory requirements and their implementation. some design calculations have retained the recognition of an allowance to be made for the increase in impedance due to a temperature rise from normal operating temperature during clearance of fault.
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Engineering Ebook: Antenna Engineering Handbook, Fourth Edition

Needless to say, the commercial mobile communications industry has been the catalyst for the recent explosive growth in antenna design needs. Certainly, the past decade has seen an extensive use of antennas by the public for cellular, GPS, satellite, wireless LAN for computers (WiFi), Bluetooth technology, Radio Frequency ID (RFID) devices, WiMAX, and so on.Antennas are key components of any wireless communication system.1,2 They are the devices that allow for the transfer of a signal (in a wired system) to waves that, in turn, propagate through space and can be received by another antenna.

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Engineering Ebook: Electric Motors and Drives: Fundamentals, Types and Applications

The book explores most of the widely used modern types of motors and drives, including conventional and brushless d.c., induction motors mains and inverter-fed, stepping motors, synchronous motors (mains and converter-fed) and reluctance motors. The d.c. motor drive and the induction motor drive are given most importance, reflecting their dominant position in terms of numbers.

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Engineering Ebook: Electrical Contacts: Fundamentals, Applications and Technology

Development in the areas of mechanical engineering and tribology, which Holm postulated to be key segments in electrical contacts, with the new data on electrical current transfer, especially at the micro/nanoscale.this book have many years of research and practical experience. One unusual and
interesting aspect of the book’s development is that it comes through the cooperation of the different approaches to the subject from the West and the East..
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Engineering Ebook: Electrical Engineering: Problems & Solutions

This book is the companion guide to Electrical Engineering: License Review. Detailed step-by-step solutions are provided for all problems. Also includes a complete 8-hour practice exam.
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Engineering Ebook: Know your oscilloscope

A fe application have, of necessity, been merely touched upon, but they were introduced with the intention of stimulating the curiosity of the reader and possibly leading him into further investigation. This book has been prepared for all users of oscilloscopes. The approach is from a technical viewpoint, but the subject matter does not require an engineering background of the part of the reader in order to be understood.

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Engineering Ebook: Schaum's Outline of Digital Principles, Third Edition

The topics outlined in this book were carefully selected to coincide with courses taught at the upper high school, vocational-Iechnical school, technical college, and beginning collcge level. Several of the most widely used textbooks in digital electronics were analyzed. The topics and problems included in this Schaum’s Outline reflect those encountered in standard textbooks. Several microprocessor/ microcomputer-related topics have been included, reflecting the current practice of teaching a microprocessor course after or with digital electronics. A chapter detailing the characteristics of TTL and CMOS devices along with several interfacing topics has been added. Other display technologies such as liquid-crystal displays (LCDs) and vacuum fluorescent (VF) displays have been given expanded coverage. The chapter on microcomputer memory has been revised with added coverage of hard and optical disks. Sections on programmable logic arrays (PLA), magnitude comparators, demultiplexers, and Schmitt trigger devices.

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Engineering Ebook: Practical Transformer Handbook

This book takes a somewhat different tack; it deals largely with transformers more relevant to electronic technology, control techniques, instrumentation, and to unusual implementations of transformers and transformer-like devices. In sodoing, the author feels that the highest usefulness will ensue from emphasis on the practical aspects of such transformers and their unique applications. For, if properly done, those readers wishing to probe further will have been guided along appropriate paths to extended investigation. The underlying objective is to stimulate the creativity of engineers, hobbyists, experimenters and inventors, rather than to provide a conventional classroom-like text. It is to be hoped that a readable and interesting exposition of the topic will help dispel much of the prevalent notion that transformers are mundane devices of a mature technology with little prospect of further evolutionary progress. To this end, it should be easy to show that the traditional treatment of transformers,
althogh providing a solid academic-foundation, tends to confine the modern practitioner to a bygone era.

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Engineering Ebooks: Power Generation Technologies

This book is primarily about the ways of generating electricity. It does not cover the means of transporting electricity and delivering it to those who wish to use it. Nor does it treat, except obliquely, the political issues that attach themselves to electricity supply. What it does attempt, is to provide an explanation of all the myriad ways that man has devised to produce this most elusive of energy forms. The book is divided into chapters with one chapter devoted to each type of electricity generation. The explanations provided are thorough and
technical where necessary but do not resort to overly technical language where this can be avoided. Readers, who are seeking a full analysis of the thermodynamics of the heat engine, or the differential equations for solving the problem of turbine flow, will need to look elsewhere.

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Engineering Ebook: Sensors and Transducers, 3rd Edition

The purpose of this book is to explain and illustrate the use of sensor and transducers associated with electronics circuits. The steady spread of electronic circuits into all aspects of life, but particularly into all aspects of control technology, has greatly increased the importance of sensors which can detect, as electrical signals, changes in various physical quantities. In addition, the conversion by transducers of physical quantities into electronics signal and vice versa has become an important part of electronics.
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Thesis on Security and Control System for fluid in a tank

This rapport describes how a security and control system has been developed for moveable diesel tanks. Enormous amounts of diesel in Sweden are stolen every year and the tank that is most vulnerable is the moveable tank in other words tanks that can be moved around with diesel inside.The report proposes methods how to measure fluid amount in a tank and how to measure if diesel is disappearing from the tank.The report also describes a tank monitoring system prototype.

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 Control System for fluid.Pdf

Thesis on Reliable Communication over Optical Fading Channels

In free space optical communication links, atmospheric turbulence causes random fluctuations in the refractive index of air at optical wavelengths, which in turn cause random fluctuations in the intensity and phase of a propagating optical signal. These intensity fluctuations, termed “fading,” can lead to an increase in link error probability, thereby degrading communication performance. Two techniques are suggested to combat the detrimental effects of fading, viz., (a) estimation of channel fade and use of these estimates at the transmitter or receiver; and (b) use of multiple transmitter and receiver elements. In this thesis, we consider several key issues concerning reliable transmission…

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