Tuesday, July 28, 2009

Dojo Kun

Well , I need to have this by heart. One of these days Shihan is definitely going to ask me to say it aloud.

Dojo Kun


We will train our hearts and bodies

for a firm unshaking spirit

We will pursue the true meaning of the Martial Way,

so that in time our senses may be alert

With true vigor, we will seek to cultivate a spirit of self-denial

We will observe the rules of courtesy, respect our superiors and refrain from violence

We will follow our religious principles and never forget

the true virtue of humility

We will look upwards

to wisdom and strength,

not seeking other desires

All our lives,

through the discipline of karate,

we will seek to fulfill the

the Kyokushin Way

Friday, July 17, 2009

Final year project update1

This is a summary of our activities thus far (for the first two weeks)

The project was started on wednesday (July 1st) with a comprehensive
briefing by the staff advisor Dr.Chandima Pathirana.His lecture spanning 4
hours helped us to get an idea of the objective of the project.

It was decided to use range and bearing measurement model. The proposed
sensors were sonar.

The initial research was done in trying to find an accurate bearing.
Static sonars will not provide any bearing information.Therefore it was
initially proposed to rotate it.
But due to the rotation the sensor model becomes too complicated.
It was agreed by Sir to give us one SRF04 sonar sensor
for testing purposes. The next proposed method was to have sonars
overlapping so that we can find the bearing as we know all three angles.
This method was also later discarded due to large errors associated with
The next option was to go for a SICK laser scanner instead of a sonar.
It has a radial accuracy of 5mm and an angular accuracy of .25 degrees.
But due to the extremely high cost of $5000 it is not financially viable.
Therefore the only option left for us was to pursue Range only SLAM.
At the second meeting with our staff advisor it was stated by him that we
need multiple readings instead of the only one reading given by
SRF04. SRF08 gives 7 simultaneous readings. Therefore in order to
implement the Algo successfully it was advised by our
advisor to pursue SLAM with multiple echo reading from the sonar.

At the second group meeting held on 16th July it was decided for me to
work on and simulate the SLAM algo starting from 20th to finish within two
weeks. It was decided for others to build the robot within that two weeks.

Tuesday, July 14, 2009

A worthy project to be presented at the IEEE R10 conference by a nigerian team

From http://www.ieee125.org/change-the-world/top-competitors/project-spread-light.html

Project Spread The Light

The Nigerian state has over the years been experiencing an epileptic power supply, transmission and distribution problems. The country has an installed capacity of 15000Megawatts of electricity drawn from such sources as hydro, coal, steam, and gas generation stations, but the amount of energy available for distribution as at end of January 2009 was a pauper 1600Megawatts which cannot be compared to her large population of over 150million. This means an energy per capita of 10.67watts. This has been one of the major developmental problems of Nigeria. Equally the conventional power stations are obsolete with little or no maintenance operations resulting to poor performance and high carbon and green house gases emission in this era when our environment is threatened by serious environmental problems caused by the emission these gases. Furthermore, the areas connected to the national grid lack constant supply of electricity not to talk of those located in remote regions of the country who have no hope of receiving electricity. Equally it would be economically impossible to connect these areas judging from their distance from the grid lines. This present state of electricity supply has been dragging industrial national development to a near halt scenario as the cost of running diesel generators by manufacturing industries is on the high side coupled with the attendant pollutions (noise, air, soil). There has been cases of outages in gas supply to the gas power stations causes little or no generation in such times, also these gas stations are accompanied with high rates of pollution starting from their exploration to utilization stages. In some fractions, the restoration of electricity after an outage has become something worth celebrating over instead of a normal situation as found in other regions of the world. This has been a serious problem encountered by almost every citizen of the Nigerian state as electricity has grown to become an indispensable asset of human life in this 21st century.

The spread the light project is an initiative we developed to address the electricity problem in Nigeria from a small scale perspective. due to the abundance supply of sunlight in Nigeria a tropical country we designed a solar energy generation module which utilize this abundant sun hours ( an average of 9hrs) to provide electricity in a small settlement in the eastern part of the country. The settlement has been off the grid with no plan of being connected in the near future. we did the analysis of the requirements of setting up a 5 kilowatt solar electricity generator which will supply10 houses in the settlement with electricity to light up their houses at night and to power low power gadgets such as radio receivers so they can be kept abreast with happenings in the rest of the world . From our analysis and computation, we figured out we would need four 210 watts, 24 volts solar panels which would yield 840watts per hour amounting to 7560 watts over 9 hours. To store this energy, we used a series/ parallel connection of ten 10 volts 200ampshour deep-cycle batteries. this resulted in 5 pairs of the 12 volts batteries put together in series. thus we have five 24 volts of 200 amp hour. the five cell in parallel gives a 24 volts 1000 amp hour battery bank. This results in a total of 24000 watts inside the batteries. but in using battery banks, we are allowed to use only about 50% of the total stored energy in the bank to prevent shortening the life span of the batteries. If they use only 45% of the batteries, they have about 10800watts of usable power from the fully charged battery bank. meanwhile, the solar panels are charging the batteries at 840 watts per hour for nine hours. The batteries are connected to a 5500 watts outback single phase inverter. We knew the output efficiency from the inverter will definitely be less than 100% so we left a tolerance of 9.5% in our bid to generate 5,000 watts. The charging of the battery by the solar panels is controlled by an automatic charge controller (Tri-star 60) which opens the circuit from the panels when the batteries are fully charged. The other things we needed for the project are; cables, metal frames for the solar panels and the battery bank, metal poles to suspend the panels, sockets, low energy bulbs, lamp holders etc. With the recent interests shown by industrial giants such as Google, Intel corp., Cogentrix Energy, PCG Clean Energy and Technology Fund, Solon AG and the Nigerian Government in solar electricity, we strongly believe that the cost of solar panels and other components of the solar electricity generator will be drastically reduced enabling other communities like our beneficiary community to enjoy similar projects. We Started the project early November 2008, finished the analysis/ computational stage late December 2008, started the implementation stage on the 12th of January 2009.

Our SPREAD THE LIGHT PROJECT has the following impacts on the on the beneficiary community, her neighboring communities andhumanity in general: 1. it alienated the settlement from the darkness and bondage of uncivilization and underdevelopment by the introduction of electricity to her inhabitants. we all are aware of the edge the invention of electricity has given development and technology world over, equally this is what the settlement stand to enjoy as they will have access to many other thing as a result of our project. 2. our solar generator being a renewable energy source is in line with recent technological concerns about our environment across the globe. the module does not contribute to the emission of green house gases which threaten our existence on earth by virtue of global warming and other adjoining environmental problems. the module does not constitute noise, air and thermal pollution which are the other of the day other power generation options. 3. the module has a long life span of about 25 years with little or no maintenance required. it is equally self sustaining, easy to maintain, portable, easy to expand and can be matched with other technologies (power generation options). 4. the major raw material "solar energy" is readily available and in abundant quantity in the chosen settlement unlike fossil fuels whose exploration is both capital intensive and complex. 5. the project is in line with the Nigerian nation's 7-point millennium development agenda of becoming among the first twenty largest economy by the year 2020, the agenda has power generation as one of its major proponents. 6. Spreads the message of technology across diverse and remote areas. OUR PROJECT HAS NOT BEEN FULLY IMPLEMENTED AS AT THE TIME OF THIS SUBMISSION DUE TO SOME BOTTLENECKS FINANCIAL IN SPONSORSHIP.

Friday, July 10, 2009

Presentation on netmetering

This is a small presentation i made about the financial aspects of netmetering.

Wednesday, July 8, 2009

Configuring sound in ubuntu

1. check what your sound card is by typing at terminal
hasala@hasala-laptop:~$ cat /proc/asound/card0/codec#* | grep Codec
Codec: Realtek ALC268
Codec: LSI ID 1040
mine is ALC 268

oh well i just set the device as HDA intel (Alsa mixer) and all works well.

Wednesday, July 1, 2009

My Final year project title

After a lot of praying we were blessed to get the project that we had for number one.

The topic is "Stochastic self-localization of a mobile robot" , which is currently a very hot topic in the academia. It involves software creation, hardware design and algorithm optimization . Therefore it is a well rounded topic which will further our electrical electronic as well as computer knowledge.

It has lots of research aspect in it. Apart from the fact the supervisor Dr.Pathirana is a very friendly chap and had done his Phd on the very same topic.

Lets see if we can make a break through innovation!

My current preference order for Final year project

need to clarrify some topics therefore this is a tentative prefernce

1.Synchronizing and Protection relay for net metering applications of Solar Panels.

3.Remote controlled hum-free fan regulator

4.Harmonic current compensator

5.Position sensing of a mobile robot with low cost optical mice. Ask frm Dr Pathirana

6.Improvement of reliability of micro hydro electricity generation plants

7. Development of a synchronized energy monitoring device for energy theft detection. Ask

8. Development of a high impedance fault detection system in low voltage distribution

9. Stochastic self-localization of a mobile robot Ask

10. Design and Implementation of Inverted Pendulum controller Ask

2.Three-phase full-parameter AC electricity acquisition module.

11. Design and implementation of unity-power-factor dimmable fluorescent lamp

ballast circuit
12. To design and build a “Power System Simulator”

13. Design and Development of a Control System of Agricultural Technologies Adapted
to Land mines Removal in Sri Lanka.