Bits Pilani Dubai Campus

Dubai, United Arab Emirates

Bits Pilani Dubai Campus

Dubai, United Arab Emirates
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Nithiyananthan K.,Karpagam College of Engineering | Umasankar,BITS Pilani Dubai Campus
International Journal of Electrical and Computer Engineering | Year: 2016

The main aim of this research work is to analyze and develop voltage up gradation procedure model for effective & economic power distribution in urban and suburban area. Voltage up gradation from 6.6 KV to 11 KV of the distribution power system network has been considered for the proposed research work. Electric power consumption has been increasing uninterruptedly, being this increase specially accelerated in the last few years. Nowadays electric lines are saturated; they are reaching critical values of ampere capacity and sag. Therefore, building new lines has been necessary to provide the ever increasing consumption. The difficulty to find new corridors to construct new distribution lines, underground cables is increasing in cities, industrial areas and in many cases it is simply impossible. The construction of new electric lines is increasing difficulty, thus there is a need to look at alternatives that increases the power transfer capacity. Voltage up gradation of the existing electric cables/lines of the distribution system is the most viable solution and it stresses on the savings of power due to a reduction in system losses when the voltage is high. The proposed research work is to develop and analyze voltage up gradation procedures and protocols for converting 6.6 KV network into 11 KV network in a distributed system. It also takes into account the expenses incurred in the process and the various other important constraints.


Fernandes L.A.,BITS Pilani Dubai Campus | Bhavani R.G.,BITS Pilani Dubai Campus
Midwest Symposium on Circuits and Systems | Year: 2017

Organic Light Emitting Diodes (OLED) are solid state devices having a great potential for commercial and industrial lighting applications. They are flexible and have an added advantage of not containing any toxic materials and hence are highly sustainable. In this paper, a comparative evaluation is done on the performance of OLED with its popular counterpart Light Emitting Diodes (LED) in terms of luminous emission, efficacy as well as coefficient of utilization (CU) on the basis of similar size and input wattage using the softwares MATLAB and Setfos. The choice of samples were chosen from a wide variety of products that are available in Illuminating Engineering Society (IES) databases. It is observed that, though OLED lags behind LED in terms of magnitude of luminous intensity and efficacy, it has a better CU and is observed to cover a wider area for illumination, making it suitable for luminaire systems near the work plane or even in emergency lighting systems. As OLED is still in the development phase, there are many lighting design softwares that do not have OLED lighting systems in their catalogue, hence MATLAB is a good candidate for analyzing the performance characteristics of OLED presently. © 2016 IEEE.


Vasant I.,BITS PILANI DUBAI CAMPUS | Arivarasi A.,BITS PILANI DUBAI CAMPUS | Kumar A.R.,BITS PILANI DUBAI CAMPUS
Lecture Notes in Engineering and Computer Science | Year: 2016

Nanoporous gold film detects the presence of heavy metal ions in water. Nanoporous gold film based sensor is fabricated by layering copper on silicon substrate with an intermediate titanium layer acting as an adhesive. This film is formed through electroless plating by spraying potassium gold cyanide on the copper. It is proposed to fabricate this sensor using 3D printing. Increased copper surface roughness increases the rate of formation of the film. This surface roughness can be achieved through lenient tolerances, curved triangles or porosity. Generating porosity is a superior method. STL, AMF and other file formats are compared for feasibility and optimality for this application. The slicer software and selected file format should be compatible. AMF file format is selected for the 3D printing of the nanoporous gold film based water sensor given that this format supports multiple materials and porosity in the layers.


Saldanha S.L.,BITS PILANI DUBAI CAMPUS | Arivarasi A.,BITS PILANI DUBAI CAMPUS | Kumar A.R.,BITS PILANI DUBAI CAMPUS
Lecture Notes in Engineering and Computer Science | Year: 2016

3D printing is well established for macro dimension 3D Printing. The feasibility of 3D Printing for a water quality sensor with 10 nm and 100 nm layers and a printing area of 1.4 cm by 1.4 cm is considered. The process of 3D Printing requires relative motion of the extruder with respect to the print bed. Servo motors are not suitable as they lack the ability to hold the shaft stationary without an external brake. The stepper motor does not need high end feedback systems for positioning. The Hybrid Stepper Motors with 1/128 or 1/256 micro stepping do not provide adequate accuracy. Piezo walk motors provide high moving and holding force and resolution in picometer range. A Hybrid Stepper Motor can provide coarse positioning and the piezo walk motor can provide fine positioning.


Kalaichelvi V.,Bits Pilani Dubai Campus | Karthikeyan R.,Bits Pilani Dubai Campus | Sivakumar D.,Annamalai University
Journal of Intelligent and Fuzzy Systems | Year: 2013

The weld quality is generally controlled by the welding parameters. In gas metal arc welding process, the welding parameters are inter related and the adjustment of one parameter may affect another parameter and hence it is considered as a non-linear process. The non-linear nature of the welding system makes it difficult to implement a conventional control method. Fuzzy logic control is an attractive alternative approach. The performance of fuzzy controller will be very much dependent on the knowledge provided to the system. Therefore in recent years, more research has been devoted to augment the approximate reasoning method of fuzzy systems with genetic algorithms. In the present work, genetic algorithm tuned conventional controller is implemented for gas metal arc welding system. Its performance is compared with that of genetic algorithm based fuzzy logic controller. © 2013 - IOS Press and the authors. All rights reserved.


Sen P.,BITS Pilani Dubai Campus | Vadivel S.,BITS Pilani Dubai Campus
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2015

Implementation of a novel indexing model for images with verified facial data is presented in this paper. This indexer uses histogram based clustering to select the skin color of the subject of the image, and then classify the image as such. Fuzzy based classification techniques are used to detect the skin tone of the images. © 2015 SPIE.


Jain S.,BITS Pilani Dubai Campus | Shetty S.,BITS Pilani Dubai Campus
2016 3rd International Conference on Electrical, Electronics, Computer Engineering and their Applications, EECEA 2016 | Year: 2016

Parkinson's disease has affected over 6.3 million people across the globe. It is estimated that by 2030, the number would rise to 9 million. Almost twenty percent of the people still remain undiagnosed. Parkinson's is the second most common neurodegenerative disease after Alzheimer's. It not only claims the lives of the patients suffering from it but also adversely impacts the lives of their loved ones. A lot of research is being conducted to find modern medical techniques to tackle the ill effects of the disease. Monitoring the progression of the disease plays a vital role in controlling its various symptoms. Non-conventional ways of monitoring PD (Parkinson's Disease) provide an edge over the existing techniques as it reduces the financial burden and also limits the number of clinical visits required for it. In this research paper, we aim to build a predictive model that accurately predicts the UPDRS (Unified Parkinson's Disease Rating Scale) of patients using the data collected through noninvasive speech tests. The research hopes to propose a more efficient technique to monitor Parkinson's disease leading to beneficial treatment of the patients. © 2016 IEEE.


Revathy G.,BITS Pilani Dubai Campus | Razak A.,BITS Pilani Dubai Campus
International Conference on Electrical, Electronics, Signals, Communication and Optimization, EESCO 2015 | Year: 2015

VLSI trends are in focus to reducing gate sizes for miniaturization of circuits to be on par with the Moore's law which states that the number of transistors in a unit area doubles every 18 months. To make this possible, transistor gate sizes must be reduced. More shrinkage of gate size leads to short channel and leakage effects which are undesirable making CMOS impossible to use beyond 22nm. To replace CMOS in circuits, another type of Field Effect Transistor called FINFETs are deployed. They are multigate devices and so, they control leakage and other short channel effects. They are more efficient in performance than CMOS, but because of multigate, the parasitic resistance and capacitance is more than that of CMOS. This limits its analog performance. This paper focuses on reduction of parasitic capacitance of 20nm FINFET by optimizing the gate spacer material used. The simulations are done on Synopsys TCAD tools and finally the circuits using the optimized FETs are simulated using HSPICE to measure parameters like delay, power, etc. © 2015 IEEE.


Rajendran S.,BITS Pilani Dubai Campus | Lourde R.M.,BITS Pilani Dubai Campus
International Conference on Electrical, Electronics, Signals, Communication and Optimization, EESCO 2015 | Year: 2015

Highly sensitive methods which are fast and accurate are essential for detecting analytes in biosensing applications. Microcantilevers serves as an ideal choice for a DNA sensor due to their ease of fabrication and low cost involved. This paper discusses the design of a high performance cantilever based DNA sensor along with its modelling to obtain optimum sensitivity. © 2015 IEEE.


Shah S.,BITS Pilani Dubai Campus | Parveen M.,BITS Pilani Dubai Campus
ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) | Year: 2015

Environmentally Sustainable Design is in accordance with the concept of sustainability to design objects and built environment achieving a balance that causes no overall net environmental burden. At a time when global warming is proceeding at a rate, unprecedented in the past 1,300 years, we not only need to switch to greener energy sources and reduce consumption on the whole, but also make provision for the victims of future calamities that are inevitable due to irreversible environmental damage. This paper talks about creating an ecological balance in natural and manmade ecosystems. The need for Environmentally Sustainable Energy as well as the concept and its principles has been explained. A case study was taken up on the LILYPAD Project by architect Vincent Callebaut to showcase an excellent example of an environmentally sustainable design concept for future climatic refugees. The prototype is termed as an "auto sufficient amphibious city" and takes up the challenges launched by the OECD namely climate, biodiversity, water and health. The research also states how we can incorporate the idea of living symbiotically with nature in the construction of future homes with the implementation of one such concept i.e. Passivhaus standards. This paper aims to create awareness about environmental responsibility and how the use of environmentally sustainable design can help us realize this practically. All structures must be constructed with the aim of making them as energy efficient as possible by implementing the Passivhaus Principles and many such standards that can reduce our energy consumption and emission. Copyright © 2015 by ASME.

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