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Articles 1 - 11 of 11

Full-Text Articles in VLSI and Circuits, Embedded and Hardware Systems

Design & Development Of Fpga Based Vme Bus Controller, Himali Patel, Poornima Talwai Jul 2015

Design & Development Of Fpga Based Vme Bus Controller, Himali Patel, Poornima Talwai

Innovative Research Publications IRP India

The VME bus interface Controller (VIC068A) is used to interface Local CPU bus and VME bus. VME Bus Controller is used in wide application areas where high reliability, good accuracy and high speed are desired to withstand industrial environment like nuclear power plant and process industries. VME Bus controller can configure as Master, Slave, Interrupt Handler, arbiter as well as power monitor. Commercial VME Bus interface controller chips are available from a few vendors and are very expensive. As time goes VME Bus Controller Chips become absolute and vendor support will not be provided. To solve part obsolescence problem and …

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Wave-Shaped Mask Of Fabricating Nano-Scaled Structure, Fang-Tzu Chuang Aug 2014

Wave-Shaped Mask Of Fabricating Nano-Scaled Structure, Fang-Tzu Chuang

Fang-Tzu Chuang

A wave-shaped mask for fabricating a nano-scale structure is disclosed. The wave-shaped mask comprises an elastomeric transparent substrate having an upper surface and a lower surface, and a light-penetrable thin film layer disposed on the upper surface of the elastomeric transparent substrate. The upper surface of the elastomeric transparent substrate and the light-penetrable thin film layer are in a periodic wave shape, and the lower surface of the elastomeric transparent substrate is in a plate shape.

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Greek Patent Protection System And The Impacts Of Information Technology Industry, Emmanouil Alexander Zografakis Ez Feb 2013

Greek Patent Protection System And The Impacts Of Information Technology Industry, Emmanouil Alexander Zografakis Ez

Emmanouil Alexander Zografakis EZ

Our era can be characterized as the era of knowledge proliferation and bountifulness. That has marked our era as the era following the pace of the Information Society Development. Information Society has also brought about a remarkable IT development pace over countries. Thereby, it is greatly important all that raw knowledge to become mind figments, ideas and even inventions and innovations. It is also essential to highlight that such a beneficial process will ensure the continuity of the IT development. The only way to achieve that goal is to find a way to secure all that aforementioned knowledge which is …

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At89c51 Microcontroller Based Control Model For Hybrid Assistive Limb (Knee ), Suresh L Jan 2013

At89c51 Microcontroller Based Control Model For Hybrid Assistive Limb (Knee ), Suresh L

suresh L

In this paper, a controlling system is implemented for a wearable walking supporting device so called as Hybrid Assistive Limb. The control circuit is implemented without considering the biological signals of the human body for the knee part, which is based on the knee joint moment from the human body model. The control and a driving circuit s are implemented to assistive the knee as for the requir ement of knee joint dynamics.

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Fpga Implementation Of Quranic Recitation For Pronunciation Correction: A Review, Noor Jamaliah Ibrahim, Zulkifli Mohd Yusoff, Zaidi Razak, Mohd Yamani Idna Idris, Noor Naemah Abdul Rahman, Emran Mohd Tamil, Noorzaily Mohamed Nor Sep 2012

Fpga Implementation Of Quranic Recitation For Pronunciation Correction: A Review, Noor Jamaliah Ibrahim, Zulkifli Mohd Yusoff, Zaidi Razak, Mohd Yamani Idna Idris, Noor Naemah Abdul Rahman, Emran Mohd Tamil, Noorzaily Mohamed Nor

Noor Jamaliah Ibrahim

This paper proposes recognition of Quranic verse recitation focus on Tajweed rules mainly for pronunciation correction using Hidden Markov Models with Field Programmable Gate Array ( FPGA) board. It introduces the basic principle of speech recognition system by using two main algorithms which is Mel Frequency Cepstral Coefficients ( MFCC ) and Hidden Markov Model ( HMM ). In term of HMM module, two different algorithms will be applies, which is Baum-Welch Algorithm for HMM training and Viterbi Algorithm for HMM testing. The most important part on this project is the hardware implementation by using Xilinx Field Programmable Gate Array …

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Modeling And Simulation Of Z-Source Inverter, Suresh L Jan 2012

Modeling And Simulation Of Z-Source Inverter, Suresh L

suresh L

Z – source inverters have been recently proposed as an alternative power conversion concept as they have both voltage buck and boost capabilities. These inverters use a unique impedance network, coupled between the power source and converter circuit, to provide both voltage buck and boost properties, which cannot be achieved with conventional voltage source and current source inverters. To facilitate understanding of Z – source inverter, this paper presents a detailed analysis, showing design of impedance network, implementation of simple Boost control PWM technique and simulation of Z – source inverter for different values of modulation indices.

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Development Of A Novel Methodology For Indoor Emission Source Identification, Kwanghoon Han Mar 2011

Development Of A Novel Methodology For Indoor Emission Source Identification, Kwanghoon Han

Kwanghoon Han

The objective of this study was to develop and evaluate a methodology to identify individual sources of emissions based on the measurements of mixed air samples and the emission signatures of individual materials previously determined by Proton Transfer Reaction-Mass Spectrometry (PTR-MS), an on-line analytical device. The methodology based on signal processing principles was developed by employing the method of multiple regression least squares (MRLS) and a normalization technique. Samples of nine typical building materials were tested individually and in combination, including carpet, ceiling material, gypsum board, linoleum, two paints, polyolefine, PVC and wood. Volatile Organic Compound (VOC) emissions from each …

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Determination Of Material Emission Signatures By Ptr-Ms And Their Correlations With Odor Assessments By Human Subjects, Kwanghoon Han Apr 2010

Determination Of Material Emission Signatures By Ptr-Ms And Their Correlations With Odor Assessments By Human Subjects, Kwanghoon Han

Kwanghoon Han

The objectives of this study were to determine volatile organic compound (VOC) emission signatures of nine typical building materials by using proton transfer reaction-mass spectrometry (PTR-MS) and to explore the correlation between the PTR-MS measurements and the measurements of acceptability by human subjects. VOC emissions from each material were measured in a 50-l small-scale chamber. Chamber air was sampled by PTR-MS to determine emission signatures. Sorbent tube sampling and TD-GC/MS analysis were also performed to identify the major VOCs emitted and to compare the resulting data with the PTR-MS emission signatures. The data on the acceptability of air quality assessed …

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On The Radiation-Induced Soft Error Performance Of Hardened Sequential Elements In Advanced Bulk Cmos Technologies, Norbert Seifert, Vinod Ambrose, B Gill, Q Shi, R Allmon, Charles H. Recchia, S Mukherjee, N Nassif, J Krause, J Pickholtz, A Balasubramanian Jan 2010

On The Radiation-Induced Soft Error Performance Of Hardened Sequential Elements In Advanced Bulk Cmos Technologies, Norbert Seifert, Vinod Ambrose, B Gill, Q Shi, R Allmon, Charles H. Recchia, S Mukherjee, N Nassif, J Krause, J Pickholtz, A Balasubramanian

Charles H Recchia

No abstract provided.

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Introdução Ao Hardware Evolutivo, Gladstone B. Alves Jan 2001

Introdução Ao Hardware Evolutivo, Gladstone B. Alves

Gladstone B. Alves

In the 1950's, the idea of simulate the workings of natural evolution in an engineering setting gave birth to the domain of evolutionary computation, a powerful approach to optimization and non-deterministic problem solving. Now, some researchers are beggining to create hardware that can grow and improve itself over time, evolving steadily as it finds new and better ways to do the tasks it has set before it. The field, known as Evolvable Hardware, is a recent focus of a growing endeavour to build this kind of autonomous, adaptive, and fault-tolerant electronic systems. This paper motivates current research on Evolvable Hardware …

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Design Of An Instrumentation System To Record Distribution Profile Of Snow Layer Temperature For Modelling Of Snow Avalanche Forecast, Raman Attri Aug 1999

Design Of An Instrumentation System To Record Distribution Profile Of Snow Layer Temperature For Modelling Of Snow Avalanche Forecast, Raman Attri

Raman K. Attri

The measurement of snow hydrological parameters is extremely important in developing a model for the predication of Snow avalanche as well as Snowmelt water in the rivers. When direct measurement of these parameters is practically difficult, its dependence on snow temperature is used to develop snow cover models. A robust model for avalanche forecasting requires a sophisticated instrumentation system which can measure the required temperature parameters at right data points within snow pack. A Snow Temperature Profile Sensing System along with Surface temperature Sensor has been designed to measure Snow temperature gradient, temperature distributions, and average temperature of snow pack, …

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