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In this paper, we present the design intricacies and implementation details of a wireless sensors network based safe home monitoring system targeted for the elderly people to provide a safe, sound and secured living environment in the society. Programmed system will minimize the number of false messages to be sent to care provider and supports inhabitant through suitable prompts and action to be performed...
Recent development has a tremendous growth in the ad-hoc wireless networks. Ad-hoc wireless networks are dynamic topology networks organized by a collection of mobile nodes that utilize multi-hop radio relaying and are capable of operating without the support of any fixed infrastructure. Ad-hoc wireless networks are very useful in emergency operations, collaborative and distributed computing and military...
Cloud computing is gradually so popular because it is affordable for better services with lower cost. We can select your data base and application as per your requirements. The on-demand computing capabilities of a cloud can be more flexible and more cost-effective. In this paper I have put some concept about how I will minimize the rising IT cost with cloud solution. An architectural framework, named...
Road transport networks in cities are getting denser and new cars are being unveiled daily. With the rapid increase in road transport the world over comes the need for enhanced driving safety and convenience. Advanced technological concepts ensure a perpetual scope for development in this sector. We are currently developing an RFID based system that will alert vehicle drivers about road oddities at...
A Wireless Sensor Network is a network of sensors that, senses specified parameter(s) related to environment; processes data locally or in a distributed manner and wirelessly communicates information to central Base Station. The Base Station analyzes information and initiates suitable response if required. Wireless Sensor Network research as a whole suffers a lack of practical application scenarios...
Today we use Alphanumeric passwords in computer and network to authenticate the user. It is well known that long, alphanumeric passwords are difficult to remember, while shorter ones are easily to attack. Graphical password scheme provides a alternative to this problem. Draw-A-Secret (DAS) is a user drawing implementation on a grid canvas. This paper highlights a graphical password scheme inspired...
In this work, a discrete time sliding mode controller with multirate output feedback is designed to suppress the first two vibrating modes of a piezo actuated structure. The vibrating modes are measured by two homogeneous piezoelectric sensors. The states estimated using information filter are fused, using which the control signal is generated. The performance of the controller is evaluated through...
The Hybrid Electric Vehicle (HEV) is the first step in reducing the environmental impacts of automobile use without losing comfort, performance and extended driving range. The success of the transition to Hybrid Vehicles depends on battery capabilities, converter system and cost. This paper proposes a new isolated Dual bridge Four-level pulse width modulated dc-dc converter (DBPWMC) with small inductance...
This project proposes current mode control techniques for high power factor operation of boost rectifier. The current mode control techniques are linear peak current mode control (LPCM),non-linear carrier (NLC) and predictive switching modulator (PSM). The steady state stability analysis of the boost rectifier with the proposed switching modulators is analyzed and compared in this paper. The proposed...
Uncontrolled lighting Conditions poses obstacle to face recognition. To deal with this problem, this paper proposes a preprocessing scheme using Singular Value Decomposition and Histogram Equalization to enhance and facilitate illumination invariant face recognition. The proposed method first generates synthetic image using Histogram equalization. Original and synthetic images are singular value decomposed;...
In the recent years antenna design appears as a mature field of research. It really is not the fact because as the technology grows with new ideas, fitting expectations in the antenna design are always coming up. In the past, it followed a simple method based on some Euclidean geometry comparatively. However, the wide-spoken attractive fractal antennas do not follow this design. Their complex structure...
Electrical power consumption is increasing day by day, complicating the operation of distribution systems. Distributed Energy Resource (DER) integration in distribution system is one of the options which give benefits like loss minimization, peak shaving, over load relieving and improved reliability. This paper presents an algorithm for optimal placement and size of the DER considering system loss...
Brushless DC motors are the widely used motors for they possess many advantages when compared with induction motors such as higher efficiencies, High torque to inertia ratios, Greater speed capabilities, Lower audible noise, Better thermal efficiencies, Lower EMI characteristics, electronically commutated etc., In the design of such advantageous motors it becomes necessary for the estimation of the...
Due to the fast-paced changing technologies in the field of electricity market liberalization, the incorporation of Distributed Generation (DG) along with its various distributed resource technologies have led to a profound change in electrical power system. Besides many positive impacts of incorporation of DG into the electrical power system, it has introduced many inherent technical problems such...
A delay locked loop (DLL) is a feedback control system that equalizes the phase of two delayed copies of the same clock signal. The DLL is useful for compensating the clock distribution delays that arise in many system configurations. An all-digital delay-locked loop (ADDLL) is presented to achieve wide range of operation, fast lock, Harmonic-Free and process immunity. The paper proposes a Modified...
This paper presents the circuit level implementation and analysis of the Phase Locked Loop (PLL) architecture for clock generation in Analog to Digital Converters (ADCs). The PLLs are required to generate low-noise or low-jitter clock signals and at the same time need to achieve fast locking. The Analog to Digital Converters require a clock generator whose clock output should have jitter less than...
Accurate determination of radiated field without resorting to field measurements has been a desired goal in many radio and navigation systems. This paper presents an efficient and accurate computer model which could evaluate the received field at any location. This is done in three steps: modeling of the terrain between the transmitting and receiving antennas, ray tracing and filed evaluation. The...
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