Vignans Nirula Institute of Technology and Science for Women

Guntūr, India

Vignans Nirula Institute of Technology and Science for Women

Guntūr, India

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Rao N.D.,Vignans Nirula Institute of Technology and Science for Women | Balakrishna P.,Vignans Nirula Institute of Technology and Science for Women | Gouthami K.,Vignans Nirula Institute of Technology and Science for Women
2015 International Symposium on Advanced Computing and Communication, ISACC 2015 | Year: 2015

Automatic clothing pattern recognition is a challenging research problem due to rotation, scaling, illumination, and especially large intra-class pattern variations. This paper recognizes clothing patterns in four categories (plaid, striped, pattern-less, and irregular) and identifies clothing colors. To recognize clothing patterns, we propose a novel Radon Transform Descriptor (RTD), Scale Invariant Feature Transform (SIFT), Mathematical Morphology (MM) based global feature and a schema to extract Statistical Descriptor (STA) to capture global features of clothing patterns. They all are combined to recognize complex clothing patterns. Our approach achieves 96% recognition accuracy which significantly outperforms the state-of-the-art texture analysis methods on clothing pattern recognition. © 2015 IEEE.


Tripura P.,Vignans Nirula Institute of Technology and Science for Women | Babu Y.S.K.,Vignans Nirula Institute of Technology and Science for Women
Journal of Intelligent and Fuzzy Systems | Year: 2014

This paper presents simulation of speed control of Separately Excited DC Motor (SEDM) using Neuro-Fuzzy Controller. The Controller is based on Adaptive Neuro Fuzzy Inference System (ANFIS) which aims at reducing peak-over shoot and settling time of DC Motor. The performance of the driver system was evaluated through the simulations using MATLAB/SIMULINK. The simulation results shows that the performance of the drive with ANFIS Controller outperforms the performance of the DC Motor with conventional PI Controller. © 2014 IOS Press and the authors.


Ravindranath Tagore Y.,Vignan University | Pidikiti T.,Vignans Nirula Institute of Technology and Science for Women
Proceedings - 2013 International Conference on Machine Intelligence Research and Advancement, ICMIRA 2013 | Year: 2014

In this paper a new soft-switching technique for ZVS based buck converter using coupled inductors is considered in detail. The purpose of soft switching technique is to minimize voltage and current overlapping area, which in turn minimizes the switching losses and increase the efficiency of the converter. In this paper modeling and simulation of ZVS based converter with PID and Sliding mode Controllers is explained for performance comparison. © 2013 IEEE.


Rajesh T.,Vignans Nirula Institute of Technology and Science for Women | Babu Y.S.K.,Vignan University | Tagore Y.R.,Vignan University
Proceedings - 4th International Conference on Computational Intelligence and Communication Networks, CICN 2012 | Year: 2012

This paper presents a hybrid system controller, incorporating fuzzy controller with vector control method for induction motors. The vector-control method has been optimized by using both PI and fuzzy controllers. This combines the benefits of fuzzy logic controller and vector-control in a single system controller. High quality of the regulation process is achieved through utilization of the fuzzy logic controller, while stability of the system during transient processes and a wide range of operation are assured through application of the vector control. This paper also deals with the speed estimators for applications in sensor less induction motor drive with vector control. In the present work, Indirect vector controlled induction motor sensor less drive with PI and Fuzzy controllers is implemented. It shows that the performance is better for fuzzy when compare to PI controller. © 2012 IEEE.


Nagateja T.,Andhra University | Venkata Rao T.,Vignans Nirula Institute of Technology and Science for Women | Srinivasulu A.,Andhra University
2015 International Conference on Communication and Signal Processing, ICCSP 2015 | Year: 2015

Feature size of CMOS technology continues to scale down; new devices like FinFET are experimented and proposed as an alternative device due to its superior characteristics. In this paper we have presented low voltage, high speed 1-bit full adder cells in Branch Based Logic and Pass Transistor (BBL-PT) logic by using FinFET model parameters. In BBL-PT full adder lies a drawback i.e. voltage step existed in sum output. That could be eliminated in the proposed logics by using the diode connected FinFET (D-FinFET) inverter, N-type FinFET inverter and modified current sink restorer structures. Proposed full adder circuits are compared with conventional adder circuits, and proposed circuits have demonstrated the good delay performance. The performance of proposed and other conventional full adder circuits are examined using Cadence and the model parameters of 180 nm CMOS technology with +1.2 V supply rail voltage and 20 nm FinFET model files with +0.6 V supply rail voltage with frequency 100 MHz. © 2015 IEEE.


Gudavalli M.,Vignans Nirula Institute of Technology and Science for Women | Raju S.V.,Jawaharlal Nehru Technological University | Kumar K.S.M.V.,Siddhartha Institute of Engineering and Technology
ACM International Conference Proceeding Series | Year: 2012

Biometrics have long been used for various applications in the areas like access control to facilities and computers, criminal identification, border security, access to nuclear power plant, identity authentication in network environment, airport security, and issue of passports or driver licenses, forensic and medical databases. As biometric finds its applications in several high security areas providing security to biometric template is of utmost importance. A biometric is permanently associated with a user and cannot be changed. Hence, if a biometric identifier is compromised, it is lost forever and possibly for every application where the biometric is used. Moreover, if the same biometric is used in multiple applications, a user can potentially be tracked from one application to the next by cross-matching biometric databases. Biometrics also leaks personal information to the attacker. Nevertheless, biometric systems are prone to a variety of attacks. The stored biometric template attack is the most severe of all the attacks. Biometric templates cannot be reissued on spoofing. Therefore, apart from security; biometric templates should be imparted with revocability. No single template protection method reported in recent years is capable of satisfying the diversity, revocability, security and performance requirements. Copyright 2012 ACM.


Gudavalli M.,Vignans Nirula Institute of Technology and Science for Women | Viswanadha Raju S.,Jawaharlal Nehru Technological University | Vinaya Babu A.,JNTUH College of Engineering | Srinivasa Kumar D.,Nalanda Institute of Technology
Proceedings - 2012 International Symposium on Biometrics and Security Technologies, ISBAST 2012 | Year: 2012

Biometrics is the science and technology of measuring and analyzing biological data of human body, extracting a feature set from the acquired data, and comparing this set against to the template set in the database. The increasing demand of enhanced security systems has led to an unprecedented interest in biometric based person authentication system. Biometric systems based on single source of information are called Unimodal systems. Although some Unimodal systems have got considerable improvement in reliability and accuracy, they often suffer from enrollment problems due to non-universal biometrics traits, susceptibility to biometric spoofing or insufficient accuracy caused by noisy data. Hence, single biometric may not be able to achieve the desired performance requirement in real world applications. One of the methods to overcome these problems is to make use of multimodal biometric authentication systems, which combine information from multiple modalities to arrive at a decision. Multimodal biometric systems are those which utilize, or capability of utilizing, more than one physiological or behavioral characteristic for enrollment, verification, or identification. Studies have demonstrated that multimodal biometric systems can achieve better performance compared with Unimodal systems. We discuss here different multimodal sources, multimodal architectures different fusion techniques used in multimodal biometric systems. © 2012 IEEE.


Sribala G.,Vignans Nirula Institute of Technology and Science for Women | Sukanya D.V.N.,Vignans Nirula Institute of Technology and Science for Women | Gouthami K.,Vignans Nirula Institute of Technology and Science for Women | Kim T.-H.,Sungshin Women's University
International Journal of Security and its Applications | Year: 2015

Low Density Parity Check codes are FEC codes and consequently data rate is more. They are linear error correcting codes for transmitting a message over a noisy transmission channel. LDPC codes are finding increasing use in applications requiring reliable and highly efficient information transfer over noisy channels. These codes are capable of performing near to Shannon limit performance, Low Decoding Complexity. The main advantage of the parity check matrix is the decoder can correct all single-bit errors. In this Paper LDPC encoder and decoder architecture for coding 3-bit message vector will be analyzed and also designed using VHDL. © 2015 SERSC.


Rehana Sutana S.,Vignans Nirula Institute of Technology and Science for Women | Bala Krishan P.,Vignans Nirula Institute of Technology and Science for Women | Gouthami K.,Vignans Nirula Institute of Technology and Science for Women | Kim T.-H.,Sungshin Women's University
International Journal of Control and Automation | Year: 2015

Wireless sensor networks (WSN) are the network having number of sensors to transfer data from source to destination. In the internet point of view the connect number, sampling rate and signal types of sensors are generally restricted by the device. In the network, there are no of sensors are present and each sensor gives sensing when the data transfer occurs at that node. In the modern scenario wireless networks contains sensors as well as actuators. ZigBee is newly developed technology that works on IEEE standard 802.15.4, which can be used in the wireless sensor network (WSN). The low data rates, low power consumption, low cost are main features of ZigBee. To improve the performance of ZigBee a new method is proposed to reconfigurable smart sensor interface for industrial WSN in IoT environment, in which ARM7 is adopted as the core controller. Performance will show the effects of proposed system. © 2015 SERSC.


Suresh Kumar N.,Vignans Nirula Institute of Technology and Science for Women | Pavan Kumar K.V.K.V.L.,Vignans Nirula Institute of Technology and Science for Women | Mahesh G.,Vignans Nirula Institute of Technology and Science for Women
International Journal of Applied Engineering Research | Year: 2014

This paper presents a proactive approach to prevent child fatalities at the umpteen open uncapped bore-wells in India, which is based on communications using Infra-Red signals. When the IR signal, placed two inches diametrically under the ground surface of bore-well, breaks due to any obstructing object, a buzzer starts sounding as an alert and at the same time, a stake that is kept a few feet lower in the bore-well closes the bore in order to prevent the object from falling deeper into the well. The solution presented in this paper is a simple and yet easily scalable and highly cost-effective solution utilizing the proven technology of Infra-red Signaling. © Research India Publications.

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