Electronics

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Circularly polarized antennas are used mostly due to the advantages over linearly polarized antennas like Mis-alignment and cross-polarization etc. In this paper, a high gain stacked patch antenna is proposed in this two patches are arranging one above the other in a single substrate to achieve dual band characteristics for high gain frequency selective surface has been used. The proposed antenna operates at band of 2.4 GHz for the application of WLAN, second antenna operates at two bands one is 2.2GHz and other at 3.6GHz. Simulation results evaluated in term of return loss, bandwidth, radiation pattern, directivity, gain and axial ratio. Gain of the antennas is 3.28 dB for trimmed square patch and 2.4 dB for inset feed antenna and 2.8 dB for centre feed antenna. For proposed antenna gain is 8.9dB at 2.2GHz and 3.9dB at 3.6GHz. Circular polarization antennas are one such a kind to their applications in satellite communications, Navigation systems, and mobile communications, proposed antenna can be used in WLAN, Wi-MAX, WPAN and RFID applications. Center frequency can be optimized; further more gain and matching can be obtained by integrating active components like diode, transistor and FET etc. © 2017 IEEE.

VIT Unitversity

School of Electronics Engineering

Chennai Campus

2017 International Conference on Nextgen Electronic Technologies: Silicon to Software (ICNETS2)

High gain stacked patch antenna with circular polarization for wireless applications

In this paper, we design a cylindrical dielectric resonator antenna with multiband. In metallic printed structure, various methods are implemented to achieve multiband in patch antennas but they are not efficient in dielectric resonators. so we are employing a new type of method called a partially ground method in cylindrical dielectric resonator antenna (CDRA) structure which gives us multiple resonance at a single antenna. This CDR antenna suitable for multiband applications. Simulation results shows that the proposed antenna achieves an impedance bandwidth from 2GHz to 6GHz covering various wireless bands like WIFI, WLAN, WIMAX, Bluetooth. The proposed antenna design gives the appreciable gain and better radiation pattern at the resonant frequencies. The result has been validated in HFSS. © 2017 IEEE.

Designing multiband in cylindrical dielectric resonator antenna (CDRA) for wireless applications

Objectives: With the fast increment in the quality of client of the internet over the previous decade has made the internet as a feature of the life and IoT is the most recent and developing innovation. Internet of Things (IoT) is developing systems of ordinary item from customer merchandise to mechanical machine that can share data and complete and while you are occupied with different exercises. This system is planned minimal effort and expandable permitting a variety of device to be monitored. In this project only sensors has been monitored for better result they has to be controlled wirelessly through IoT. Methods/Statistical analysis: All the sensors that are connected to the Atmega are sensing the values at different conditions and displaying the values in LCD as well as the values are stored in the cloud. Whenever there is a change in the measured parameter that changed values are being updated. This ensures the correctness of the system at every instant of time the values are automatically updated in the cloud. Findings: Global industrial process monitoring through IoT is a system that uses computer or mobile devices to monitor functions in industry. It is intended to spare electric force and human vitality. The sensors that can be checked are temperature, light intensity, water level, current and voltage. These sensors are associated with Atmega and interface with Raspberry pi and observed qualities are put away in cloud. The modern procedure monitoring system varied from other system by permitting the client to work the system from any place around the globe through internet association. The system will consequently change on the base of the sensors information. Application: Engineers and scientists around the world use embedded systems to prototype and diagnostics, monitoring, and control applications within a variety of demanding industry environments. Rugged and modular hardware provides the flexibility to meet your specific embedded system application needs today and in the future. © 2017 IEEE.

Global industrial process monitoring through IoT using Raspberry pi

Electrical appliances that operate at high voltages require customized tests based on the appliance rating and insulation range to ensure the safety and wastage of current. This system will focus on a custom Virtual Instrumentation technique for testing key parameters and validating the machine based on its specifications/name plate details. Hardware section of this instrument will operate in tandem with a user configured Field Programmable Gate Array (FPGA) and provide documented results from LabVIEW about the health of the device under test. The Virtual Instrument used in this system is National Instrument Single-Board RIO (NI sbRIO) which provides real time limelight on unique feature of an application. This system focus on efficient usage of High Voltage for the specified applications, improves the time and reduces the complexity of system using the latest advancement in Virtual Instrumentation. © 2017 IEEE.

World University root node

FPGA based hand-held high voltage testing equipment

SRAM is widely used cache memory in the world. Materialization of low power SRAM with highest stability is a need of the hour. As from many years the requirement of fast and low power devices are augmenting. In this paper, in first part described about stability analysis from ADM (extract from N-Curve). After that information about leakage power is given. One 8T SRAM circuit is proposed with low power and highest probable stability. This paper promises reduction in power by 66%. The stability of the cell is also increased, i.e. WNM increased by 15.9%; penalty is in RNM by 7.9 %. © 2017 IEEE.

A novel method for design and implementation of low power, high stable SRAM cell

Objectives: Post hospitalization care of a patient treated for critical illness, for instance cardiac arrest has been regarded as imperative. Nevertheless, it has become inevitable to skip follow-ups by the patients themselves. Method: This paper aims at designing a system which continuously monitors the health of the patient despite the patient being busy with his routine. An application is developed on android platform combined with Internet of Things (IoT) and sensor devices. Health of patient will be monitored by sensors and data from sensors will be sent to cloud which can be accessed anytime by the doctor and/or caretaker both in the cloud and application for necessary follow-ups in real time. Findings: In order to find the health of a patient more parameters are needed. But the main parameter for identifying the health of a patient are heart rate and temperatures. More parameters can be added to the system developed. Improvements/Applications: More sensors can be added to the system and the system has many application scenarios such as family health care. © 2017 IEEE.

IoT augmented health monitoring system

Objectives: This project focuses on monitoring of use of water, consider, by one block of house in a flat system, where at the partition of pipeline from where the water gets diverted to various part of a block. Methods/Statistical analysis: Water places a vital role for living beings in their day to day lives. The earth's 71% is covered by water is a ubiquitous fact. Among which Oceans has approximately 96.50% and 3% is considered to be freshwater, again out of which only 0.08% is accessible direct to human use and rest is preserved in tundra regions and in different form on and in the earth surface which is very difficult to abstract for the human purposes. From this it states that only 0.08% is available as fresh water for human being to make use for drinking, domestic purposes, sanitation, manufacturing, leisure, agriculture etc which gets recharged by rain and snowfall 1. Findings: According to scientists and organizations as IPCC (Intergovernmental Panel on Climate Change), state has come, since a long time, where water management as such implies to maximizing use of water and minimizing the wastage of water and thus preventing the domino effect cycle arises as wastage of water. The sensors will sense the flow of water to each pipe which ultimately tells the usage of water at one block ideally. This water usage data would be sent to cloud using the IOT (Internet of things) space. This cloud data would be sent to the concern resident's person's mobile app (application) reporting the water used and alerting the user to limit the water use if it gets extended to the limit usage set by municipal government or corporation. If the limit gets extended the user have to pay accordingly. This will be real time operation. The objective of doing so is for limiting and minimizing the usage of water for an average of per person. And secondly, the cloud data will be used as statistic data for use of water at every seasons that is winter, summer and monsoon so that measuring steps for water management can be taken with the appropriate statistics, yielding an avenue for predictive measure. Improvements/Applications: To appraise the IOT based water management, it can be ramified as diligent, frugal for water management in a symbiotic parity way, which will constrict the water resource evenly according to the in situ factors. © 2017 IEEE.

IoT based water management

Cryptography is the art of realizing security by the strength of mathematics involved in the security algorithm, the security is compromised by the mathematics of cryptanalysis using the side channel attacks. Differential power analysis (DPA) is the most effective form of side channel power analysis, which analyses the power consumption of the cryptographic device statistically and reveals the secret information. This paper investigates the implementation of the S-BOX with the DPA resistant logical style, namely, the Three Phase Dual rail Pre-charge logic (TDPL) which makes the power consumption of the device insensitive to intermediate values. To make the power consumption constant an additional phase is added in addition to the pre-charge and evaluation phases of the three phase dual rail logic. In this paper, the implementation of the S-BOX is carried out in both the static CMOS logic and the TDPL logic to compare their DPA resistance. It is proved that the static CMOS logic is more vulnerable to power analysis than the considered three phase logic. The correlation analysis is performed to estimate the property of the DPA resistance of the S-box implementation. © 2017 IEEE.

DPA resistance analysis of the cryptographic S-box implementation in static CMOS and TDPL logic style

Elucidation of carrier trapping and emission mechanism in quantum dots for information storage applications

Objectives: Electroencephalogram (EEG) plays an important role in recording the activity of human brain. Identification of epileptic seizures can be done using EEG signals. Methods/Statistical Analysis: In this work for classification of EEG signals a method known as Empirical mode decomposition (EMD) is used and compared with empirical wavelet transform (EWT) based method. Findings: In this paper the EMD has been considered for five classes of EEG signals. Intrinsic Mode functions obtained for these EEG signals have been shown. The amplitude modulation bandwidth BAM and frequency modulation bandwidth BFM have been calculated. Applications/Improvements: The classification based on bandwidth features and least square support vector machine (LS-SVM) provided better categorization accuracy than earlier adopted methods. Results have been shown in this report. © 2017 IEEE.