Application of Markov Chains in real time to Retail Food Chains.

Before we dig deeper, let us touch base on what these Markov chains are really about?

So there is theory called " Queuing Theory ". Yes, indeed the same queues i am talking about standing in line , waiting for our turn to fulfill our request.

Why queuing theory ? 

According to an independent survey on an average, on any given business day and at any given point of time there are approximately 894,449 Canadians waiting queue which approximates to spending 37 billion hours per year waiting in lines.  

So basically, Queuing theory is mathematics of waiting lines and Markov chains is an approach used to analyze these waiting lines.

The following is our project where me and my team analyzed the queues of a fast food chain and calculated the performance parameters.

Modelling & Real time performance analysis of an M/M/x queue.

Automated Motor Control using Arduino

Abstract

In the current scenario of our country, the life of farmers in the villages is miserable due to the uncertainty of power supply. Especially in southern India, the main source of farmers is 
agriculture and that is dependent on the power supply which is uncertain due to the irregular monsoon rainfall.

There are several deaths reported due to the electric shocks.So we would design a motor, whose operation/running time can be given as input by the keypad 
and the motor operates for that time. Even in the event of power failure it records the time and resumes it at the supply of power. 

This whole setup is made available at minimum cost, as there is no extra shield involvement. 
In this circuit we also detect the over voltage and under voltage of the power supply and 
compensate for that corresponding problem, if any exists.

            Presentation

The presentation about the project is provided below , it gives the overall view of the necessity and the application of the Project

                       

                         Practical Working

                    Conclusion & Future Scope

The project ‘AUTOMATIC MOTOR CONTROL’ was designed with a vision to help

the farmers and workers, and protect them from electric shocks by making the motor 

switching process automated. We successfully have designed the device and believe 

that it will be helpful for future.

There is still scope for a design improvement in the project; over voltage and over 

current protections need to be provided for the device. Also it can be made a much 

smarter device by the use of soil moisture sensors, which can sense the presence of 

water and regulate the motor accordingly.

Some more Photographs of the setup 

Disclaimer: Automated Motor Control project is a mini project of Uttej Reddy G.The presentation presented above is the sole work of the above author and is completely private .No part of the presentation can be used without obtaining the prior permission of the author.

USB Hack

USB Powered Keyboard Lighting

Bored at home?  Left with unused or non-working USB cable? 

Here’s a small thing u could do this Christmas...

Things Needed :

USB Cable                                - 1 Nos 

Straws                                       - 2 Nos

                                                        

Single stranded wire                 - 1 meter

                                                 

Switch                                       -1 Nos

                                                  

Theory :

Firstly before going into the on hands experiment, let us first know what USB is

·        USB stands for Universal Serial Bus

·        It has four thin different colored wires inside it viz. Red , Black , White and Green

·        Each of these colors indicate a specific purpose , as we know that an USB is essentially used to transfer the data , it should essentially contain a Data transmitting & a Data reception wire these wires are colored white and green respectively.

·        And any port or any machine for that matter, needs power to operate/function

For this purpose the two other wires are used. The red wire is used to input the USB with 5 Volts DC, and the black being the ground wire.

·        The general block diagram of the USB is given below.

Block Diagram :

Procedure :

·         Cut the USB wire about 5 cms away from the Jack and unstrap the wire.

·      Connect all the components as shown in the block diagram

·        Use hot glue or solder the joints of the wire to the switch and the led’s

·        Put the led’s inside the straw and wire them from the other end of the straw as shown below, this makes our led’s look like street lamps.

·        Once you’re done , color the straws to give them the best look

·        Now connect the USB end to the port and using the switch control your led’s.

·       This is most used at late nights when you’ve got to work and someone’s sleeping in the room and you’re forced to shut down the lamps.

Result :

Hope it was informative :) We love to hear back from you...

Please drop in the comments for any queries :) 

All the best guys :)

Buzzer using Arduino

Buzzer using Arduino

In the Microcontrollers the one dealing with the 8051 microprocessor , collaborated with Ardiuno , did you know you could make a simple buzzer using that besides making various sound variations ( aka Tones ) ??

ARDUINO :

Arduino is a open source code and can be downloaded from here

Program :

  int i;
  void setup()
{
   pinMode(6,OUTPUT);
   Serial.begin(9600);

}

void loop()
{
   for(i=0;i<=990;i+10)
   {
     Serial.println(i);
   analogWrite(6,i);
   delay(100);
   }
}

Working :

IR Detection..

                                           IR Detection

Ever while watching television at your house , stuck up by the non working TV remote ?? besides being scolded by your mom, that even after studying Engineering you are not able to identify what the problem is all about... ??

Well guys , here is a good news for you... There's a simple trick which can be performed , all that is required is a mobile camera. to find out whether your TV remote is all working ?

Procedure :

1.Open the camera on your mobile .

2. Point the camera on to the top of the remote (wherein you can find a small led like thing ).

3.While doing the same press any button on your remote.

Inference :

While following the above procedure if you can see the light ( the pointed led glowing on your mobile camera screen) means that your TV remote is all fine &  no issues with the remote.

Working :

How does the above thing works ...

Usually all the TV remotes operate on Infra Red (IR) waves which are emitted from the TV remote on the press of any button , the same waves are received by the receiver placed inside the television set which then decodes the waves into analog signal and the required change then takes place..

Now the mobile camera , is capable of capturing the visible light along with the IR waves from the spectrum.Hence on press of any button on the TV remote IR rays are emitted from the IR led transmitter on the remote which appear on your camera screen.

Questions : 

Now for all those of you who started to think , if this is the case then why don't i see the IR effect when i take usual/regular pictures , as the same IR waves also exist in the same sphere i live on ??
Well here's my say ,the mobile cameras which we use have a specific wavelength identifying capacity which means that you can very comfortably capture an IR emitter / IR source but not the IR waves ..

Spectrum showing all rays with their wavelengths

Electrical transmission through optical fibers...

Electrical transmission through optical fibers...

Seems strange , isn't it ?? 

All what we heard about the optical fibers was in the context of communication , right ? but remember whenever discussed about these fibers the words "EFFICIENT TRANSMISSION" always come into play.

Now just imagine if by some means our electrical power is transmitted through these optical fibers,replacing all the old fashioned technology which uses copper wires , long electrical poles.For all of those, who started to think WHY this new technology ??? well , here's my say about it

In the modern present day world, power has become a necessity and not an option .So there is a heavy demand of power and in addition to this, the demand for shutting down the nuclear reactors, which were also a part of power production has increased, so in this regard the losses during transmission of power cannot be neglected as such .Due to these losses, the power generated is not able to meet the demand of power required for consumption.

From the ancient times we are used to system of transmitting the power using wires, but these wires are creating serious environment issues and are prone to be hazards due to electrical shocks and also the power losses that occur during electrical transmission by these. So technical re-search and advances suggested an alternate and effective method of
transmitting electrical power through optical fibers.

Advantages of replacing copper cables by OPTICAL FIBERS ! 

u Low attenuation losses .

u Effective and reliable long range transmissions.

u No risk of electric shocks.

u Any illegal connections can be prevented effectively .

u Connections to every nook and corner .

u Long life span.

u Resistant to atmospheric conditions.

u A low weight alternative to copper cable.

u Isolated, spark free power that is immune to noise and interference from surrounding cables.

                                   Disadvantages :

Cost:

         Electrical power transmission over copper or aluminum wire is, and will likely remain, cheaper than laser power transmission over fiber. The dominant cost of the laser system is the laser itself, which is not present in the electrical system. However, the cost of the laser power system is already comparable to or less than the cost of the rest of a surveillance or communications platform, and will decline significantly with quantity purchases. The cost of lasers is also decreasing overall.

My first Website !

Here it goes...
My first ever social website themed on Indian politics  , which brings up the knowledge and information about the complete politics, polling & democracy to every individual.

Here is the link..

The Real Leader
Do visit the site and dropdown your valuable comments :)
Good day folks !