Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Farrow structure is an effective structure for designing the digital filters in order to lease the complexity associated with the design. Keeping in mind, the effective and simple design of the digital filters, a method is proposed based on the Farrow structure. The proposed digital FIR filter is designed based on the farrow structure along with hybrid optimization that is designed using the Brain Storm Optimization (BSO) and Artificial Bee Colony (ABC) algorithm, termed as Brain Storm-Artificial Bee Colony (BSABC) algorithm. The proposed algorithm works based on the minimum objective function that depends on the total number of the hardware components especially adders/subtractors employed for the filter design and frequency response. The proposed algorithm operates in such a way that the quality of the filter is sustained with less number of hardware components. The optimal tuning using the proposed algorithm is simulated and analyzed for highlighting the effective method. The analysis is progressed in terms of the number of components employed in the design, fitness, Mean Absolute Error (MAE), and magnitude. The result of the analysis proves that the proposed method is effective over the Least-Square method with the minimum hardware components of 236 with minimum MAE of 0.02. © 2019 Elsevier GmbH

Electronics

School of Electronics Engineering

Chennai Campus

Electrical

School of Electrical Engineering

AEU - International Journal of Electronics and Communications

Farrow structure based FIR filter design using hybrid optimization

The digital scheme realized in this work emphasize on hardware-efficient decimation filter implementation along with their use in the processing of the digitized baseband signal of Zero-Intermediate Frequency (IF) Receiver. This technique allows quick selection of filter coefficients which will yield minimum error in the frequency response characteristics with less hardware complexity in terms of the number of hardware components, especially adders. The overall decimation filter is designed for Digital European Cordless Telephone (DECT) standard specifications. The performance of the entire system is analyzed by counting the number of adders used for each filter coefficient. In this simulation, it is proved that this type of design requires only 15 adders, which is less than 14.2% for droop correction filter and 40% for the Half-band filter. © BEIESP.

International Journal of Recent Technology and Engineering

Hardware-efficient decimation filter design of zero-IF receiver for wireless network

In India almost all the peoples are using Liquefied Petroleum Gas (LPG) as a fuel for cooking. But in this field the steps taken for safety purpose is very less. LPG is flammable gas, it has the potential to cause fire accidents heavily. In order to avoid fire accident, many researchers are applied their effort to design new prototype model. IoT based gas leakage detection and monitor system uses different sensors and gas knob to avoid the fire accident in the kitchen. It will acquire input from the sensor and control the gas knob automatically either from High ignition to Medium or from Medium to Low. Gas leakage and presents of moisture will enable the DC motor to rotate the gas stove knob automatically to stop the gas flow in the gas stove. If gas leakage is detected then it will be intimated to the end user by using pushing box option in the cloud environment. The proposed model also enables the user to analysis the usage of gas throughout the year. © 2018 IAEME Publication.

World University root node

International Journal of Civil Engineering and Technology

IOT based smart kitchen system

Background: The existing braking systems suffer from a lot of drawbacks like inferior time-delay response and noise due to mechanical parts, wear and tear due to friction and contact, low performance and bulky size. Methods/Statistical analysis: In this paper, design implementation of an automotive electromagnetic brake has been discussed, so as to replace already existing complicated braking systems with a relatively simple electromagnetic system. In the proposed system, the mechanical parts of the braking systems are completely replaced by the electronic parts, where a magnet is attached to the rim of the tyre of the vehicle and an electromagnet is placed parallel to the face of the rim of the tyre. The motion of the vehicle is controlled by controlling the supply to the electromagnet. As the electromagnet is energised, it acts like a magnet and tries to lock with the magnet on the rim of the tyre. As a result, the tyre stops rotating and the braking action occurs. The working is similar to that of an antilock braking system. Findings: A study was conducted on a prototype model analogous to the real-time system, and the plausibility of the work was observed. The problems and the constraints based on the real-time scenario were accounted for and thus optimisation method is also suggested. Application/Improvements: The proposed work is most suited for hybrid vehicles and for four-wheel automotive systems. Since only an analogous prototype was implemented and researched upon, the future works involve implementation of real-time system and conduct its analysis. © Springer Nature Singapore Pte Ltd. 2018.

VIT Unitversity

Lecture Notes in Electrical Engineering Intelligent Embedded Systems

Magnetic Braking System for Automotives

A series of Polyethersulfone (PES)-barium chloride (BaCl2) blend ultra filtration membrane was developed by varying the BaCl2 concentration in the dope solution. Prepared membranes were subjected to membrane characterization and their performance was studied through dye rejection tests. Morphological studies through SEM and AFM showed that the composite membranes exhibited differences in morphologies, porosities and properties due to the BaCl2 addition as compared with pristine PES membrane. Addition of the inorganic modifier enhanced the hydrophilicity and water permeability of the blend membrane system. Polymer enhanced ultrafiltration of dye solutions showed that the proposed blend system had better performance in terms of flux and rejection efficiency than the pure polymer membrane. The performance of the 2 wt% BaCl2 blend membrane was more promising for application to real time dye wastewater studies. © Published under licence by IOP Publishing Ltd.

Department of Chemical Engineering

School of Chemical Engineering

Vellore Campus

Fulltext

IOP Conference Series: Materials Science and Engineering

Polyethersulfone – barium chloride blend ultrafiltration membranes for dye removal studies

A pair of 32 bit Gaussian Random Numbers (GRaNs) is generated. Box Muller (BM) transformation is widely used for generation of high quality Gaussian Random Numbers in hardware. The BM transformation is a direct method to convert random numbers into a Gaussian random numbers. For the generation of uniform random number skip-ahead linear feedback shift register (SA-LFSR) is used which is given as input to BM transformation. CORDIC algorithm is used for the hardware design of BM transformation. The SA-LFSR does not suffer from correlations since they skip n number of bits at every sample. © 2017 IEEE.

2017 International Conference on Nextgen Electronic Technologies: Silicon to Software (ICNETS2)

An efficient hardware implementation of Gaussian random number generator

Objective: To implement an algorithm for improving the speed of Floating Point Multiplication. Methods/Statistical analysis: Recursive Dadda algorithm is used for implementing the floating point multiplier. IEEE 754 single precision binary floating point representation is used for representing Floating Point number. For the multiplication of mantissa Carry Save multiplier is replaced by Dadda multiplier for improving the speed. Using Verilog HDL multiplier is implemented and it is targeted to Xilinx vertex-5 FPGA. Improvements: The speed of operation is increased compared with Carry Save Multiplier. The multiplier which we developed handles both overflow and underflow cases. © 2017 IEEE.

A binary high speed floating point multiplier

Indiscriminate and increased use of silver nanoparticles (SNPs) in consumer products leads to the release of it into the environment. The fate and transport of SNPs in environment remains unknown. We have studied the interaction of SNPs with extracellular protein (ECP) produced by two environmental bacterial species and the adsorption behavior in aqueous solutions. The effect of pH and salt concentrations on the adsorption was also investigated. The adsorption process was found to be dependent on surface charge (zeta potential). The capping of SNPs by ECP was confirmed by Fourier transform infrared spectroscopy and X-ray diffraction. The adsorption of ECP on SNPs was analyzed by Langmuir and Freundlich models, suggesting that the equilibrium adsorption data fitted well with Freundlich model. The equilibrium adsorption data were modeled using the pseudo-first-order and pseudo-second-order kinetic equations. The results indicated that pseudo-second-order kinetic equation would better describe the adsorption kinetics. The capping was stable at environmental pH and salt concentration. The destabilization of nanoparticles was observed at alkaline pH. The study suggests that the stabilization of nanoparticles in the environment might lead to the accumulation and transport of nanomaterials in the environment, and ultimately destabilizes the functioning of the ecosystem. © 2011 Elsevier B.V.