Nawale S.D.,Sinhgad Institute of Technology |
Sarawade N.P.,Veermata Jijabai Technological Institute
Proceedings of the International Conference on Sensing Technology, ICST | Year: 2012
Since RFID is wireless technology, it enables the identification from a distance, depending upon the read range of the tag. There is a vast requirement of RFID technology in security, military, health-care, airline, library, sports, farming and other applications, not only for identification but as a sensor to monitor different parameters related to these fields. RFID based environmental sensor can be designed with the integration of sensing material in a microstrip antenna. The properties of the sensing material are responsible for converting a passive tag as a sensor. Here, RFID based passive chemical vapor sensor is presented doped with the conducting polymer. A sensitive Polystyrene Sulfonate is used as sensing material to integrate in H-shaped slot of PIFA like tag. The designed tag working at 870 MHz is characterized by turn-on and back-scattered power measurements. The experimental results are also presented by considering known and unknown percentage of water vapor and the moisture levels. © 2012 IEEE.
Mulla A.,Veermata Jijabai Technological Institute |
Baviskar J.,Veermata Jijabai Technological Institute |
Baviskar A.,Ramrao Adik Institute of Technology
Proceedings - 2014 4th International Conference on Communication Systems and Network Technologies, CSNT 2014 | Year: 2014
In recent years, intelligent network based Automation Systems are developed in industrial, commercial and residential sectors. The idea of managing the devices remotely can be implemented using various wireless technologies such as ZigBee, GSM/GPRS, Bluetooth, but these technologies require development of software, dedicated devices and network establishment schemes. Hence the implementation becomes time consuming and moreover they make the system costly. This paper presents a more liable Mobile Controlled Automated System based on DTMF (Dual Tone Multiple Frequency) principle which is cost effective. It uses Mobile as a controlling device and prevailing infrastructure of the Telephone System at the receiver end. Also using Goertzel DFT estimation the noise in the system is eliminated and its complete analysis is presented. © 2014 IEEE.
Palaskar V.N.,Veermata Jijabai Technological Institute |
Deshmukh S.P.,Institute of Chemical Technology
Proceedings of the Indian National Science Academy | Year: 2012
The temperature of photovoltaic module increases when it absorbs solar radiation, causing a decrease in electrical efficiency. A hybrid photovoltaic/thermal collector or hybrid (PV/T) systems are used to partially avoid this undesirable effect. A water/air circulation system has found to be necessary to overcome the degradation in open circuit voltage (VOC) with PV panel temperature. The cooling of PV module helps to increase the electrical output and hot water can be obtained which will be improved the overall efficiency of the system. This paper gives a review of the trend of development in the technology of flat plate PV/Thermal water or air Collectors, in particular the advancements in recent years and the future work required.
Palaskar V.N.,Veermata Jijabai Technological Institute |
Deshmukh S.P.,Institute of Chemical Technology
International Journal of Renewable Energy Research | Year: 2014
The hybrid (PV/T) solar water systems are commercially unviable because of its low concentration ratio, less combined PV/T efficiency, non-standardization of PV heat exchanger surface and long payback period. The simplest and cost effective technique to increase PV/T efficiency is to boost solar radiation on surface of PV module. This can be done by attaching flat reflectors to sides of commercial PV module. This paper provides design and performance analysis of commercial silicon based PV module with reflectors for Mumbai latitude (φ=19.12°). The flat reflectors made of anodized Aluminum sheet were attached to shorter sides of PV module at North-South direction. For different tilts of module and reflector orientations, photovoltaic power, efficiency and highest working temperature of modified module are discussed and analyzed. The modified PV module at 25° tilt and 24° reflector orientation with vertical surface of module could able to generate PV power and efficiency of 161 W and 13.8% respectively. This results shows that modified module produced 15% more PV power than one-sun concentration of PV module. During the experiments the modified module was found heated with maximum operating temperature of 66 °C.
Chaple G.,Veermata Jijabai Technological Institute |
Daruwala R.D.,Veermata Jijabai Technological Institute
International Conference on Communication and Signal Processing, ICCSP 2014 - Proceedings | Year: 2014
Real-time image processing applications requires processing on large data of pixels in a given timing constraints. Reconfigurable device like FPGAs have emerged as promising solutions for reducing execution times by deploying parallelism techniques in image processing algorithms. Implementation of highly parallel system architecture, parallel access of large internal memory banks and optimization of processing element for applications makes FPGA an ideal device for image processing system. Edge detection is basic tool used in many image processing applications for extracting information from image. Sobel edge detection is gradient based edge detection method used to find edge pixels in image. This paper presents a design of a Sobel edge detection algorithm to find edge pixels in gray scale image. Xilinx ISE Design Suite-14 software platforms is used to design a algorithm using VHDL language. MATLAB software platform is used for obtaining pixel data matrix from gray scale image and vice versa. Xilinx FPGAs of family Vertex-5 are more suitable for image processing work than Spartan-3 and Spartan-6. © 2014 IEEE.
Phalle V.M.,Veermata Jijabai Technological Institute |
Sharma S.C.,Indian Institute of Technology Roorkee |
Jain S.C.,Indian Institute of Technology Roorkee
Tribology International | Year: 2011
In the present paper, an analytical study concerning the influence of wear on the performance of a membrane compensated 2-lobe four-pocket hybrid journal bearing system has been presented. The modified Reynolds equation governing the flow of lubricant in the clearance space of a journal bearing system was solved using FEM and NewtonRaphson method. The numerically simulated results clearly indicates that the performance of the bearing is greatly affected by wear. A judicious selection of parameters such as δ, δ̄w and C̄m may provide better bearing performance. © 2010 Elsevier Ltd. All rights reserved.
Madhubala R.P.,Veermata Jijabai Technological Institute
Proceedings of the 2015 International Conference on Green Computing and Internet of Things, ICGCIoT 2015 | Year: 2015
Cloud consists of vast number of servers. Cloud contains tremendous amount of information. There are various problems in cloud computing such as storage, bandwidth, environment problems like availability, Heterogeneity, scalability and security problems like reliability and privacy. Though so many efforts are taken to solve these problems there are still some security problems. Ensuring security to this data is important issue in cloud Storage. Cloud computing security can be defined as broad set of technologies, policies and controls deployed to protect applications, data and corresponding infrastructure of cloud computing. Due to tremendous progress in technology providing security to customers data becomes more and more important. This paper will tell the need of third party auditor in security of cloud. This paper will give brief idea about what are the security threats in cloud computing. This paper will analyze the various security objectives such as confidentiality, integrity, authentication, auditing, accountability, availability, authorization. This paper also studies the various data security concerns such as various reconnaissance techniques, denial of service, account cracking, hostile and self-replicating codes, system or network penetration, Buffer overflow, SQL injection attack. © 2015 IEEE.
Naik P.V.,Veermata Jijabai Technological Institute
Current Science | Year: 2016
Meghnad Saha (1893-1956) is a prominent name in the history of Indian science. Each of his contributions - as a physicist, teacher, institution builder, Member of Parliament and social thinker and reformer - is monumental. In spite of meagre resources, struggle at every stage and hardly any encouragement for his work, Saha's achievements are remarkable. He was of the firm opinion that in a country like India, the problems of food, clothing, eradication of poverty, education and technological progress can be solved only with proper planning, using science and technology. His untimely and sudden demise occurred 60 years ago. Here is a brief overview of his contributions.
Duche R.N.,Veermata Jijabai Technological Institute |
Sarwade N.P.,Veermata Jijabai Technological Institute
IEEE Sensors Journal | Year: 2014
In recent years, applications of wireless sensor networks (WSNs) have been increased due to its vast potential to connect the physical world to the virtual world. Also, an advance in microelectronic fabrication technology reduces the cost of manufacturing portable wireless sensor nodes. It becomes a trend to deploy the large numbers of portable wireless sensors in WSNs to increase the quality of service (QoS). The QoS of such WSNs is mainly affected by the failure of sensor nodes. Probability of sensor node failure increases with increase in number of sensors. In order to maintain the better QoS under failure conditions, identifying and detaching such faults are essential. In the proposed method, faulty sensor node is detected by measuring the round trip delay (RTD) time of discrete round trip paths and comparing them with threshold value. Initially, the suggested method is experimented on WSNs with six sensor nodes designed using microcontroller and ZigBee. Scalability of proposed method is verified by simulating the WSNs with large numbers of sensor nodes in NS2. The RTD time results derived in hardware and software implementations are almost equal, justifying the real time applicability of the investigated method. Necessity of received signal strength measurement in cluster head variation and assigning separate wavelength for each link in other fault detection techniques are overcome here. © 2013 IEEE.
Patil S.P.,Veermata Jijabai Technological Institute
2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives, AICERA/iCMMD 2014 - Proceedings | Year: 2014
This paper presents a Z-Source inverter system and Double carrier control technique applied for Induction motor drive system. Z-Source Inverter system consists of a unique impedance structure of two capacitors and inductors connected in cross fashion, which cannot be observed in traditional inverter system. This special Z-Source network effectively utilizes shoot through state to boost the DC link voltage. Amount of boost in voltage depends on shoot through duty ratio and size of Z-Source elements. Because of this unique feature it can provide ride-through capability during voltage sags. Also it helps to minimize line harmonics, improves power factor and reduces motor rating. This paper uses double carrier PWM control which has additional benefits over conventional PWM control methods. A model of Z-Source Inverter based Induction Motor drive is built in MATLAB/SIMULINK to demonstrate these features. © 2014 IEEE.