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Ghosh K.,Mody University of Science and TechnologyRajasthan | Das P.K.,RCCIIT | Neogy S.,Jadavpur University
Advances in Intelligent Systems and Computing | Year: 2016

Lifetime of a multi-sink wireless sensor network (WSN) may increase considerably when data aggregation is introduced in a Fermat point based routing protocol. However, data aggregation should come with a cost of delay in packet forwarding time. It has been seen that increasing the transmission distance could increase the network lifetime. However, our observation shows that after a certain point, lifetime readings of the network would dip for a distance vector type of protocol. Thus, it becomes necessary to choose an appropriate aggregation factor and transmission radius depending upon the requirement of the application for which the WSN has been installed. In this paper we have presented a Fermat point based data aggregating protocol which is distance vector protocol in nature. We have compared its lifetime with some other Fermat point based protocols and studied the effect of aggregation factor on cumulative delay for packet forwarding. Moreover, effect of increased transmission radius on the lifetime of the proposed protocol too was studied. © Springer India 2016.

Mondal U.,RCCIIT | Sengupta A.,IIEST
Proceedings of 6th IEEE Power India International Conference, PIICON 2014 | Year: 2014

The objective of this work is to validate the servo mechanism property of Repetitive Control (RC) system for periodic reference input in the presence of disturbance and in the presence of time varying parametric uncertainty. The ways of design and implementation of repetitive control system is demonstrated in steps. A similar test have been made having conventional PI-control and compared with RC based P control. Comparisons in terms of performances in both time and frequency (using bode plot) domain are done to show the effectiveness of the RC over the traditional idea. © 2014 IEEE.

Ghosh K.,University of Rajasthan | Das P.K.,RCCIIT | Neogy S.,Jadavpur University
Advances in Intelligent Systems and Computing | Year: 2015

Data aggregation has been used as a prominent technique for lifetime enhancement of wireless sensor networks (WSN) for quite some time. Data aggregation reduces total number of transmissions in a WSN. Since transmitting energy is the most prominent component of energy consumption in a WSN, data aggregation reduces energy expenditure of the network and thereby enhances network lifetime. The nature of aggregation, however, may vary from one application to another. Along with this, the way source nodes are selected for transmission has an effect on the energy depletion and lifetime of the nodes. In this paper, we have studied the effect of certain non-electrical factors such as source selection, deployment pattern, packet size, and data forwarding technique on the performance of aggregation of a multi-sink WSN with varying degrees of aggregation. © Springer India 2015.

Mukherjee S.,Techno India | Pan I.,RCCIIT | Samanta T.,IIEST
ACM International Conference Proceeding Series | Year: 2016

Multi-Tasking digital microfluidic biochip raises some challenging issues in droplet routing in presence of on-chip defects. In this work, a heuristic droplet routing algorithm is proposed that tries to perform defect aware droplet transportation on digital microfluidic biochip. The aim of the proposed algorithm is to design defect-Avoiding and pin-count aware routing paths minimizing the following objective functions, (i) number or electrode usage during routing, (ii) routing completion time, and (iii) actuation pin count. The algorithm tries to find electrode fitness through a sum between, numbers of electrode elapsed in routing and an electrode count on rectilinear path between the candidate electrode and target electrode. A candidate electrode with minimum fitness value is selected for next movement in droplet route. During this routing control pins are simultaneously allocated through a comprehensive cooptimization method. This pin assignment technique helps in minimizing reuse of the resources for routing beyond sustainable level. Simulation results are compared with some exiting works and the improvement in this proposed work is quite encouraging. © 2016 ACM.

Das P.K.,RCCIIT | Shome S.,RCCIIT | Sarkar A.K.,Central University of Jharkhand
Proceedings - 6th International Advanced Computing Conference, IACC 2016 | Year: 2016

As apps on smartphones are becoming more complex, they tend to take more time for execution and consume more power. This paper describes a system (APPS) that supports both class level code offloading as well as thread migration of Android applications to remote server connected through Wi-Fi or 3G to reduce time of execution and power consumption. APPS performs better than any other previous approaches due to: 1) invocation of separate threads in the server to handle multiple clients, 2) grass root level binary serialization used for thread migration to make the system faster, more dynamic and robust, 3) transfer of execution state from server to client to resume computation in the client on the fly in case of deterioration of network health, 4) drastic reduction of average state transfer size between the server and client. APPS monitors dynamic network conditions to automatically offload classes or threads at runtime as guided by a decision maker module. The system was tested on the classical N Queens problem and achieved an improvement of one order of magnitude in performance and three orders of magnitude in power consumption for N=14 as compared to execution on smartphone alone. © 2016 IEEE.

Mukherjee S.,Techno India | Pan I.,RCCIIT | Samanta T.,IIEST
Proceedings - IEEE International Symposium on Circuits and Systems | Year: 2016

Commercial digital microfluidic biochip is facing an urge for design automation and test because of its complex multi-tasking paradigm. This work presents particle swarm optimization based technique for multiple fault detection in DMFB. The main objective of the algorithm is to localize the faults on a 2D biochip by circulation wash droplet, treated as the particle. PSO framework is modeled with the 2D biochip board as the search space for the particles. Multiple particles are generated from the reservoir and are circulated over the search space. Paths of the particles are guided by the velocity, which is decided upon previous knowledge of the particles' motion. The proposed work tries to find a time efficient procedure for fault localization with minimal number of particle encountered in the process. Simulation study shows that the process will enhance the reliability and accuracy in fault detection of the operational digital microfluidic biochips. © 2016 IEEE.

Ghosh A.,RCCIIT | Sen S.,PTC | Dey C.,University of Calcutta
2nd International Conference on Signal Processing and Integrated Networks, SPIN 2015 | Year: 2015

Servo control systems are very popular in process automation. Towards achieving and maintaining the desired speed in close-loop application, fuzzy controllers are more competent in comparison with their conventional counterparts. Based on the prior knowledge, a rule-base is designed here comprising of forty-nine if-then rules using simple triangular membership functions. The non-linear behaviour of such servo systems can also be efficiently managed by proper designing of rule-base with appropriate choice of scaling factors. Superiority of the designed fuzzy PI controller is verified through simulation study on a servo speed control system and in addition it is successfully implemented in real-time on a hardware setup. © 2015 IEEE.

Jain A.,Jadavpur University | Ghosh A.,RCCIIT | Singh N.B.,Manipur University | Sarkar S.K.,Jadavpur University
Journal of Computational and Theoretical Nanoscience | Year: 2014

A new approach for stability and reliability analysis of hybrid CMOS-SET circuits has been proposed. Using this approach, the stability of hybrid SET-CMOS NAND and NOR gates has been tested using SIMON. All the points corresponding to the control input vectors are found to be located in the stable white and grey portion of the stability plot. The influence of thermal fluctuations caused by increase in system temperature on the stability of the logic gates has also been thoroughly investigated. It was found that tunneling event increases with increase in temperature thereby decreasing the stability of the circuit. The reliability of the designed gates has been analyzed considering different variation factor of uniform and normal distribution of background charges. It was found that the reliability of the NAND gate is highly dependent on the value of the equivalent resistor and that it gave best result if the value of the resistor is kept in the middle of the range. NOR gate was found to be less affected by the value of the load resistor compared to the NAND gate. Copyright © 2014 American Scientific Publishers. All rights reserved.

Mondal A.,RCCIIT | Bhattacharya S.,RCCIIT
Proceedings - 2014 3rd International Conference on Eco-Friendly Computing and Communication Systems, ICECCS 2014 | Year: 2014

HVAC systems control the temperature, humidity and air circulation in shopping malls. In these systems generally there is one main controlling unit as the Ventilation and Air-conditioning units are centralized. HVAC system consumes bulk amount of energy and idle consumption in a centralized system is always greater than the distributed system where each and every unit could be controlled separately. In present scenario, the HVAC systems installed in large shopping mall could not provide sufficient amount of oxygen and fresh air, and failed to maintain the desired temperature across the various zones where, crowd is more than the normal. For example a feeling of suffocation and more humidity are felt predominantly at the overcrowded locations like at the front of the payment counter or at the POS where large discount has been announced. In this paper the problem is identified and a suitable control system has been suggested to cater a better comfort and control over entire zone with reduced consumption of energy. In this proposed scheme the control system dynamically adjusts to the changing Building environment and load (number of Occupants and Sources of heat like lighting load, Electronic gadgets, Electronic Displays, computers, kitchen etc.). An automatic and effective Energy saving scheme has also been proposed without compromising with the comfort level of the occupants. © 2014 IEEE.

Mukherjee A.,RCCIIT | Sengupta S.,Indian Institute of Technology Bombay | Chakraborty D.,Indian Institute of Technology Delhi | Sen A.,BESUS | Garain U.,ISI
IASTED Multiconferences - Proceedings of the IASTED International Conference on Artificial Intelligence and Applications, AIA 2013 | Year: 2013

Natural language geometry problems are translated into formal representation. This is done as an essential step involved in text to diagram conversion. A parser is designed that analyzes a problem statement in order to describe it as a language independent, unambiguous formal representation. Natural language processing tools and a lexical knowledge base are used to assist the parser that finally generates a graph as the parsing output. The parse graph is the formal representation of the input natural language problem. This graph is later translated into another intermediate representation consisting of a set of graphics-friendly statements. High school level geometry problems are used to develop and test the proposed methods. Experimental results show high accuracy of the approach in translating a natural language problem into a formal description.

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