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The study of electric field is an important tool for lightning research. Electric Field Mills (EFMs) are electromechanical devices used to observe static atmospheric electric fields during fair weather and during storm conditions. EFM readings show significant changes in electric field due to an approaching thunderstorm and particularly, during lightning periods. Attempts to comprehend the variations...
Wireless sensor networks (WSNs) have found many applications in building environment monitoring and energy management applications. However, WSN data is not completely reliable and hence its use in energy management has to be carefully considered. Experiments conducted on a WSN test bed monitoring a campus classroom highlight how sensor data is prone to errors, underlining the need to detect faulty...
The number of deaths due to the motor vehicle accidents has increased drastically during the last few years. It is estimated that nearly 40–50 % of the accidents are due to the distractions of the driver. One of the methods to assess driver distraction is using head pose estimation. The unavailability of a standard driving database hampers the study and testing of driver distraction algorithms. In...
Authentication systems are used to verify the identity of a person and provide authorization for access. with the in creased number of Internet enabled devices in the modern world, reliable authentication is crucial for secure access in networked environments, Hence, a secure and reliable biometric authentication system based on IOT is proposed in this paper. The proposed biometric authentication...
Gallium nitride (GaN) based high-electron-mobility transistor (HEMT) is getting popular in power electronics applications due to its low on-state resistance and superior switching characteristics. The on-state resistance of the switch is an important factor in the efficiency of the GaN switch based power converter. Firstly, the basic principle of operation of a normally-on GaN/AlGaN HEMT is reviewed...
The study in sparse representation of signals and its applications has changed the field of signal processing into a quickly developing area. These studies have opened tremendous feasible research ideas. Compressed sensing is one among the greatest beneficial field of these studies. Signal sparsity property introduced the idea of reconstruction of signals from very few prototype atoms of an overcomplete...
Tilting of broadside radiation pattern of microstrip antenna array is obtained by loading SRR on the ground plane between antenna elements. Progressive Phase Shift method is used here. The phase delay generated by single SRR is around 500 when compared to a reference transmission line. The beam scanning is found to be 280 with central frequency of 10 GHz and gain of 11.18 dB.
In this paper, we are proposing Bag of Feature (BoF) approach for vehicle classification using Speeded Up Robust Features (SURF). First, monocular video taken using a stationary camera is given as the input to Gaussian Mixture Model (GMM) based foreground detector. Then a grid is used to measure the number of foreground pixels. If the pixels inside the grid is greater than a pre-assigned threshold,...
This paper compares the stochastic convergence of the Uniform Random number generators of two simulation software namely Matlab and Python and establishes the significance in choosing the right random number generator for error propagation studies. It further discusses about the application of Gaussian type of these random number generators to nonlinear cases of Error propagation using the Monte Carlo...
Latest researches related to Wide Area Measurement Systems (WAMS) recommends the development of a cost-effective FPGA based phasor measurement unit for developing a real time synchrophasor network. This paper presents an algorithm for an FPGA based Phasor Measurement Unit (PMU) modeled using Xilinx Vivado System Generator design suite. The backbone of the proposed PMU algorithm is the Non Recursive...
As a solution to the emerging energy crisis and the environmental problems, renewable energy has to be utilised to the most. This paper deals with a residential building which is fully powered by renewable energy sources such as hydrogen fuel cell, IC engine and solar PV. Since the utility has no role in this scenario, the management of the system has to be done precisely, otherwise, it may lead to...
This paper suggests identification and classification of fault at the time of power swing by using decision tree approach for transmission system network. The power swing which occurs during switching in/out of heavy loads, after fault clearance condition etc causes change in active and reactive power. The suggested decision tree method initially retrieves the information about fault/ power swing...
In today's world that witnesses an ever-changing scenario in the technical fields, the concept of an “examination” too has changed. From the traditional methods of pen-and-paper and Optical Mark Recognition (OMR), it has evolved into ‘Online Examinations’, which are a lot more flexible, time-saving as well as require much fewer resources. However, they have certain drawbacks too. While the uncertainties...
In high voltage (HV) flyback charging circuits, the importance of transformer parasitics holds a significant part in the overall system parasitics. The resonance between magnetising inductance and resonant capacitance cause significant deviations in voltage gain. This effect is predominant in the case of very lightly loaded high voltage flyback converters when used for bipolar output voltages. In...
Device-to-device (D2D) will be the future of wireless technology with low power, high data rate and low latency for information exchange between wireless devices. However it may not be always feasible because of mobility and influence of surroundings on the devices. This paper presents an approach to model and investigate D2D network at two millimeter wave (mmW) frequencies of 28 and 60 GHz, by calculating...
Neuroscience researchers have a keen interest in finding the connection between various brain regions of an organism. Researchers all across the globe are finding new connections everyday and it is very difficult to keep track of all those, so it is important to create a centralized system which is able to give the relation between brain entities. Databases like PubMed contains abstracts and references...
In this paper a sixth-order low-voltage gain buck converter is introduced. In this converter a high degree of freedom in achieving the performance trade-offs, both in steady-state and dynamic, is possible due to sixth-order nature. The voltage gain of this converter is almost half of the conventional buck converter. A time-domain and state-space analysis is adopted to predict the detailed performance...
This paper details the design and development of IoT based security surveillance system in buildings using Raspberry Pi Single Board Computer(SBC) with WiFi network connectivity. Adding wireless fidelity to embedded systems will open up various feasibilities such as worldwide monitoring and control, reliable data storage etc. This system comprises of wireless sensor nodes and a controller section...
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