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Sunday, September 28, 2008

FPGA Central for FPGA related resources

FPGA Central for FPGA related resources

Recently I have visited a website called FPGA central. Actually, the author this website have given comments to some of my blog posts. This sight gives a good insight about FPGA and CPLD technology. So I would like to share on it. It provides articles and solutions for Field Programmable Gate Array and CPLD related applications. It provides information about FPGA, CPLD Design, development, verifications, validations, various processes and tools with products.

It also posts featured articles, news and webcasts, world wide job opportunities in these fields, events like conferences to be conducted so on.
This site acts as a best guide for students as well as vendors & users working in these fields.

FPGA related news can be updated using their email and RSS feeds.

Wednesday, September 24, 2008

Implementation of Digital Filter in FPGA

Implementation of Digital Filter in FPGA

Most of the hardware design are done with latest technology like FPGA in order to speed tasking and compact design. In this series, most of the filter can be desinged using this technology in a single chip.
Implementing hardware design in Field Programmable Gate Arrays (FPGAs) is a formidable task. There is more than one way to implement the digital FIR filter. Based on the design specification, careful choice of implementation method and tools can save a lot of time and work. MatLab is an excellent tool to design filters. There are toolboxes available to generate VHDL descriptions of the filters which reduce dramatically the time required to generate a solution. Time can be spent evaluating different implementation alternatives. Proper choice of the computation algorithms can help the FPGA architecture to make it efficient in terms of speed or area.

Source: Net friend

Sunday, September 21, 2008

Design a Line Tracking Robot

Design a Line Tracking Robot
I have been discussing Robotics for past one week. In this series i would like to share a simple design of a Line tracking robot which can cost only less amount with a simple design procedure. In this motor, two dc motor or stepper motor can be used for the wheels. With this a mini robot can be designed. A while line in a dark road or a dark line in a white road can be drawn.
With this arrangement the direction and speed of the robot can be controlled. Suppose, the sensor in robot detects a dark line, it can slowdown the speed and change its direction or stop. If it goes in the right track in the road, it will be steering in the same direction.
In this way we can control the robot to make a correct ride on the road. The control circuit can be designed with IC 555 timer, Transistor or FET switches, Operation amplifiers and Light reflecting sensors. If you do this simple design, this enthusiasm will lead to a more sophisticated design of a robot of real time. Try it and give your valuable comments

Source : from a Net friend

Friday, September 19, 2008

Bigdog Robot in Army

Bigdog Robo in Army

The latest robotics technology is going to revolutionize the battle field by human resemble robodog called as Bigdog. Bigdog robot is a four legged petrol powered robot. Its legs are resembling as dogs legs. This is the latest quadruped robot on earth. It is equiped with all sort of latest gadgets like laser gyroscopes, a video camera sensor system and a sophisticated on-board computer system. Boston Dynamics has unveiled this military weapon robot. They have also other categories of robots for varies applications like climbing, little robo so on.
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Features of Bigdog robot
It can cary military equipment
It can cope up with holes, steep slopes and water hazards
It can stay or withstand on its legs when it is kicked hard in the side
It stores energy by built in shock absorbers when a foot touches the ground

Bostan dynamics have stated that it can also be used for non military purposes.

Thursday, September 18, 2008

Latest in Robotics Era RoboDog

Latest in Robotics Era - Science Fiction become reality now

Robotics in Science fiction movies, stories has been realized by latest technology. A fantastic design of robodog by a group of master students which responds in sensible ways to positive and negative scenarios going on around it. This extraordinary creature will drop its head, whimper and collapse down if faced with carbon monoxide, cigarette smoke, alcohol, too much dark lighting, hitting and yelling. And also he will perk up and express signs of excitement when standing in broad daylight or going on walks. Do you like to own this pet, then it is time to ask the owner

Wednesday, September 17, 2008

Amazing Autonomous Helicopter

Amazing Autonomous Helicopter
Recently i have visited an exhibition on mini Helicopter and Planes which are remotely controlled. It was really amazing to see such mini helicopter and plane air show. When i was a graduate student, i used to design planes but due to heavy weight of design i could not make it fly. During this real show i touched the helicopter, it was really so light in weight, they have used chips with remote controls and light weight motors. It has been a dream to me to design such a planes and helicopter.
It is also amazing to see and admire those who have designed autonomous helicopter in Standford university. Such amazing airshow is really encouraging me give me a boost to do such a projects. All the credits go to the students who have done such a art of autonomous flightMore photos Source

Sunday, September 14, 2008

Integrated chip celebrating 50th year

Integrated chip celebrating 50th year

Almost all the technology e.g. electronics gadgets and equipments is using Integrated circuits chips. Its revolution in the technology era is tremendous and very fast. Now the time has come for celebrations, yes, Microchip invented 50 years back; its growth has been in terms the number of transistor integrated into a single chip. The first working chip is invented by Jack Kilby, Texas Instruments on Sept. 12th 1958. It consists of one transistor and other components are glued to the side of piece of glass. His invention has been revolutionizing the electronics world. The modern computer and the internet technology would not be realized without his first rough device.

According to Moore’s law the density of the transistor integrated into a single chip double in every 18 months. This growth of the Microchip can be depicted as

Can we imagine and live a world without this Microchip technology.

Wednesday, September 10, 2008

Hadron Collider begins its journey to unveil the mysteries behind unvierse

Hadron Collider begins its journey
I would like to share the news of Hadron Collider and its milestone in the history of Mankind.
It is going to answer for the questions like how was the universe created?, how is a particle acquire mass. There are so many theory in answering these questions. Still there is no confirmation in correct answer.
What is Hadron Collider
The Large Hadron Collider (LHC) is the world's largest and highest-energy particle accelerator complex, intended to collide opposing beams of protons (one type of hadron) charged with high energy. Its main purpose is to explore the validity and limitations of the Standard Model, the current theoretical picture for particle physics. It is theorized that the collider will confirm the existence of the Higgs boson, the observation of which could confirm the predictions and missing links in the Standard Model, and could explain how other elementary particles acquire properties such as mass. Source1
The $9 billion LHC project, which sits astride the Franco-Swiss border, operates a tunnel buried 50 meters to 150 meters below the ground. The tunnel, or tube, is designed to facilitate and control a head-on collision between two beams of the same kind of particles -- either protons or ions. Traveling through a vacuum comparable to outer space, the beams are guided around the tube by more than 1,000 superconducting magnets.

Milestone in the history of mankind LHC begins testing
On Wednesday morning, just outside of Geneva, scientists shot a particle beam fully around a 17-mile loop in the world's most powerful particle accelerator -- the Large Hadron Collider (LHC). Twenty years after development of the collider began, a particle beam made the full journey around the accelerator for the first time. It's a forebear to the time when scientists will accelerate two particle beams toward each other at 99.9% of the speed of light.
Rumors about LHC
While scientists are using the collider to find an answer to how the universe was created, there have been increasing rumors circulating around the Internet that the experiments will destroy the Earth and possibly the entire galaxy. People have been fearful that when the particles collide at high energy, they will create a black hole that will suck everything and everyone into it.

Sunday, September 7, 2008

Solar system application

Solar system application
Another renewable energy source is solar power. In order to meet the energy demand, solar power can be used which is available in plenty.
Solar is a clean, efficient, and sustainable form of energy. The worldwide demand for solar photovoltaic energy is greater than supply. When the cost of supplying electricity to remote locations is expensive, solar energy becomes a cost-effective alternative. In addition, the use of a string of Photo Voltaic modules allows maximum power point voltages large enough to avoid boosting voltages in the conversion stage.

A Transformer less solar power system :
This project proposes a new transformer less, single-phase Photo Voltaic inverter with DC – DC Boost chopper circuit. A new high-efficiency topology that generates no varying common-mode voltage and requires the same low-input voltage as the bipolar PWM full bridge, to increase the inverter output voltage level. The inverter is simple, it requires only four insulated gate bipolar transistors OR MOSFETs and these have a good trade-off between efficiency, complexity and price.
In low frequency applications, the line transformer in the distribution side is large in size, heavy and expensive. Technological evolution has made possible, the implementation of both ground-fault detection systems and solutions to avoid injecting dc current into the grid. Then the transformer can be eliminated without distorting system characteristics related to personal safety and grid integration. Also Issues such as reliability, high efficiency, small size and weight, and low price are of great importance to the conversion stage of the Photo Voltaic system.
But here in conversion stage Boost dc–dc converter is used. So the serious problem of power fluctuation can be avoided, which causes a voltage ripple in the Photo Voltaic side at double the line frequency.

Friday, September 5, 2008

Features of fuel cell

Features of fuel cell
Why i am insisting the fuel cell technology is that it has a lot of futures. In addition to this this will contribute to meet additional power demand

1. Fuel cell can be used in remote locations like spacecraft, remote weather stations, large parks, rural locations, and in certain military applications

2. Compact and light weight

3. No major moving parts

4. Fuel cell Can be used as hybrid power source

5. Pollution free

6. Standby applications

Thursday, September 4, 2008

Smart move to win Flirting Championship

Smart move to win Flirting Championship
Are you smart or you want to be a smart and flirting, then you should know about Extreme Style by VO5 by which you can participate in Ultimate Flirting Championship. This is the right time to show off your flirting talent.
You can also have exciting fun by playing this game online. Then you can realize the change in you that is your look, funny character and flirting talent. You will be surrounded by girls who likes this change in you. The Ultimate Flirting Championship brings an Ultimate change in you. And also you will be awarded with the Victory Hair for your flirting talent. If your motto is to win the Victory hair, then start playing this special game.
You can also share this with other friends in order to form a flirting talent community. It is a Hollywood move to change your character to a Hollywood range.
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Wednesday, September 3, 2008

Basics of Fuel cell and applications

Basics of Fuel cell and applications
Now a days alternate power sources are required to meet the power demand in all sectors of the technology trends. Batteries are commonly used as backup for power demand. The fuel cell can replace this conventional power source which is not always available in plenty.

Fuel cell is a electrochemical conversion device which can produce electricity from a fuel (act as anode) and an oxidant (cathode) in presence of an electrolyte. The fuel cell electrodes are catalytic and more stable compared with batteries.
There are varieties of fuel cells are available e.g. hydrogen fuel cells(hydrogen as fuel and oxygen from air as oxidant), hydrocarbons, alcohols (as fuels) and air, chlorine dioxide as oxidant.
Fuels cells are more efficient as compared with non conventional energy sources like solar, wind energy, etc.
Fuel cells are almost used in all applications like Type 212 submarine with fuel cell propulsion of the German Navy in dock, The world's first certified Fuel Cell Boat HYDRA, in Leipzig,Germany, Toyota FCHV PEM FC fuel cell vehicle, A hydrogen fuel cell public bus accelerating at traffic lights in Perth, Western Australia.

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