Informatics Publishing Limited

B. Karthik ¹, T. V. U. Kiran Kumar ¹

Affiliations
1 ECE Department, Bharath University, No:173, Agaram Road, Selaiyur, Chennai-73

Abstract

In addition to the functional aspects, Electromagnetic Compatibility (EMC) compliance of electronic devices is one of the important challenges that the developers encounter before the product release. Limiting the EM noise, both conducted and radiated is one of the main requirements to achieve this compliance. The methods defined in the traditional standards have got many shortcomings. Measurement of noise of short duration is an example. Some noises like the transients from a switching device also defeat the traditional measurement procedures. Conventional methods don't prove to be efficient for the measurement of such noises since it is difficult to capture the noise level for the whole frequency range within short duration using a single test receiver. In this paper, we have developed methods that can efficiently measure the short duration noise types mentioned above.

Keywords

EMC, EMI, Radiated, Emission, Short-Duration

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T. V. U. Kiran Kumar ¹, B. Karthik ¹

Affiliations
1 ECE Department, Bharath University, No:173, Agaram Road, Selaiyur, Chennai-73

Abstract

Wireless Sensor Networks (WSN) with a large number of tiny sensor nodes can be used as an effective tool for gathering data in various situations. Hierarchical cluster based routing protocol were proposed for increasing network lifetime in the WSN. Major issues of cluster based routing protocol are power consumption and over heading which reduces the overall lifetime of the sensor network. In this project we propose a new static clustering protocol technique which partitions the network into static clusters with static cluster heads, eliminating the dynamic over heading and reduces the power consumption thereby improving the performance of the network. The performance of the proposed algorithm will be evaluated with the help of network simulation tool.

Keywords

WSN, LEACH, ADV-advertisement, Cluster Head, TDMA, CDMA

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P. Jothilakshmi ¹, B. Karthik ², R. Karthi Kumar ²

Affiliations
1 ECE Department, Velammal College of Engineering and Technology, Viraganoor, Maduari, IN
2 Velammal College of Engineering and Technology, Viraganoor, Maduari, IN

Abstract

Major operational disadvantages of microstrip antennas are their inefficiency and their very narrow bandwidth. One of a number of reasons for the expanded development of millimeter wave systems is related to a basic property of the antenna. Some antenna configurations have been proposed for such applications but these antennas have complex structure. Therefore, the design of new type of millimeter-wave antenna which is small, light, and economical for most users is absolutely necessary. So we have designed the antenna in this range of frequency. Thus the main objective of this paper is to increase the bandwidth and gain of the microstrip antenna using different shapes of conducting patch with beveled cut feed technique. In this paper, we have designed 4 element E-shaped antenna array. This array structure offers better bandwidth, gain and directivity with low return loss. E-shaped antennas are mainly used for millimeter wave communication. The proposed antenna offers bandwidth of 14.11 GHz with gain 7.54 dB. This antenna design can be simulated using ADS software. The Method of Moments (MOM) is used to design the E-shaped antenna and its array. In case of MOM technique which are used to find out the solution of Green's function.

Keywords

Microstrip Patch Antenna, Beveled E-Shaped Antenna Array, S-Parameter, Band Width, Gain, Millimeter Wave Communication.

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S. P. Vijayaragavan ¹, Debasish Pati ¹, B. Karthik ¹

Affiliations
1 Bharath University, Chennai, IN

Abstract

This paper presents the analysis, design, and experimentation results of a photovoltaic energy management system with battery backup. The proposed system is capable of both gridconnected and islanded operations. The main advantage of the proposed system is that, in grid-connected mode, the inverter works as a current source in phase with the grid voltage, injecting power to the grid and controlling the dc-link voltage. The dc/dc converter manages the battery charge. In islanded mode, the inverter control is reconfigured to work as a voltage source using droop schemes. The dc/dc converter controls the dc-link voltage to enable the maximum power point tracking reference to be followed. A battery bank is connected to the dc link as energy storage for islanded operation mode. The aim of this paper is to show that the proposed system performs correctly, without dangerous transients for the inverter or the loads. Simulation and experimental results on a prototype model show the feasibility of the proposed control strategy.

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B. Karthik ¹, R. Jeya Chandran ¹, T. Balaji ¹, S. Krithika ¹

Affiliations
1 Department of ECE, VCET, Madurai, Tamilnadu, IN

Abstract

The recent researches showed that the existing quadruple Deblocking algorithm fails in selecting the artifact factors and increases the time computation complexity it is verified through its mode calculation in analytical approach; hence we propose a novel algorithm for selecting the block artifact and the proposed algorithm has introduced to justify the blocked pixels from the decompressed video and the blocks can be removed by involving three different stage by stage approach, which are selected through each pixel, which improves the visual perspective of the video. This innovation is achieved by considering both the luminance and chrominance data arranging in the filtering schedule. Compared to the previous woks this gives higher real-time performance requirements but also provides a good trade-off between enhancing the performance as it gives the improvement in both subjective and objective image quality. The proposed algorithm is justified in the output Video by observing the visual perspective and the processing time is been much reduced compared to the quadruple deblocking filter, this implementation is carried out using MATLAB GUIDE.

Keywords

Quadruple Filtering, Trade-Off, Luminance, Chrominance, MATLAB GUIDE.

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Marykutty Cyriac ¹, B. Karthik ²

Affiliations
1 Department of Electronics and Communication Engineering, Jerusalem College of Engineering, Chennai - 600100, Tamil Nadu, IN
2 Department of Electronics and Communication Engineering, Bharath University, Chennai - 600073, Tamil Nadu, IN

Abstract

One of the visual indications for the presence of diabetic retinopathy is the exudates in the retina area of Fundus images. Detection of exudates is useful information for the early diagnosis of the eye disease. In this paper, a new approach for the detection of exudates is presented. A position based approach is combined with morphological operations for extracting the optical disc and detect the exudates. The proposed method is applied to the standard retinal image dataset and the results are presented.

Keywords

Diabetic Retinopathy, Exudates, Fundus Images Median Filter, Morphological Operations

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B. Karthik ¹, P. Venkataramaiah ¹

Affiliations
1 Department of Mechanical Engineering, S.V. University, Tirupati, IN

Abstract

In the present work, the drilling experiments are performed on Aluminum 6061-T6 and Brass C360 alloy block of 8mm thickness using HSS Twist drills by means of universal drilling machine. Cutting parameters drill diameter, speed and feed rate are varied at 3 different levels. A number of drilling experiments are conducted using the L₉ orthogonal array according to Taguchi design of experiment (DOE) on both materials separately. The output performances viz. MRR, surface roughness, torque and cutting forces are recorded for each run. Multi objective optimization technique WASPAS (weighted aggregated sum product assessment) method is used for determining the optimal drilling parameters resulting in minimum Surface roughness, Torque, cutting force and Maximum MRR. The measured responses were analyzed and the Influence of drill parameters on output responses such as metal removal rate and surface roughness, cutting force, torque is studied. After nine experimental trials, responses are compared for Al 6061-T6 and Brass C360 alloys.

Keywords

Drilling, Taguchi Design of Experiment (DOE), AL 6061-T6 and Brass C360 Alloys, WASPAS Method.

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B. Karthik ¹, M. Priyanka Gandhi ²

Affiliations
1 Department of Electrical and Electronics Engineering, Sona College of Technology, IN
2 Department of Electrical and Electronics Engineering, Government College of Engineering, Bargur, IN

Abstract

With fast trends in the industry, electricity pleasant turns into very important. Power quality is described as any electricity trouble manifested in the voltage, current or frequency deviations that bring about failure or mal characteristic of the purchaser equipment. Power quality problems may be categorized as quick period voltage variations, lengthy period voltage variations, waveform distortions, transients, voltage imbalance and voltage flicker. Among the numerous electricity pleasant problems, voltage sag, voltage swell and harmonics are extra dominant in the distribution system. To compensate those problems, Dynamic Voltage Restorer (DVR) is used. DVR is a sequence compensating device to mitigate voltage sag and voltage swell. It is likewise used as collection active filter to mitigate harmonics. In this work, Modeling of the DVR collectively with optimized ANFIS controller, have been evolved below the Matlab/Simulink surroundings to mitigate Voltage sag and harmonics in the electricity system. PSO tuning topology is followed for optimizing the ANFIS controller.

Keywords

Dynamic Voltage Restorer, ANFIS Controller, Voltage Sag, Power Quality, Voltage Sag and Voltage Swell.

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M. Murugesan ¹, R. Tharani ¹, V. Ravichandran ¹, B. Karthik ¹, V. Anusuba ¹

Affiliations
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Coimbatore 641 003, IN

Abstract

No Abstract.

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M. Premkumar ¹, B. Karthik ¹, M. Murugesan ¹, R. Manikandan ¹

Affiliations
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road, Coimbatore – 641 003, Tamil Nadu, IN

Abstract

Senecio kundaicus C.E.C. Fisch. (Asteraceae), a critically endangered and stenoendemic species has been rediscovered from Mukurthi National Park, a part of Nilgiri Biosphere Reserve, Tamil Nadu, India, after its type collection from Kundahs in Nilgiris by P.V. Mayuranathan in 1928, after a gap of 93 years. Nomenclature, detailed description, threat status and photo plate of the species are provided here for its easy identification.

Keywords

Mukurthi National Park, Nilgiris, Recollection, Southern Western Ghats, Tamil Nadu.

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R. Tharani ¹, M. Murugesan ¹, V. Ravichandran ¹, B. Karthik ¹, V. Anusuba ¹

Affiliations
1 Botanical Survey of India, Southern Regional Centre, TNAU Campus, Lawley Road, Coimbatore – 641 003, Tamil Nadu, IN

Abstract

Impatiens laticornis C.E.C. Fisch. (Balsaminaceae), a stenoendemic and critically endangered species has been rediscovered from the type locality, Mukurthi National Park, a part of Nilgiri Biosphere Reserve in Nilgiris district, Tamil Nadu, India after a gap of 92 years. The type was collected by Edward Barnes in 1929. Nomenclatural citation, detailed description based on fresh plant materials, phenology and notes on its actual range of distribution are provided here along with illustration and colour photo plate, for its easy identification and future reference.

Keywords

Edward Barnes, Mukurthi National Park, Nilgiri Mountains, Tamil Nadu, Western Ghats.

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