SOLAR ENERGY : Install Solar Plant at Home

"GO SOLAR, GO GREEN"

"Sun is a vast source of free energy!"

 But how can this free energy be made as much useful to save me money?

Sun is very important for life on earth. Without sunlight, no plant can survive and hence no food for human and animals.But you know that sunlight can even save you money?

          

            Yes, with the help of solar panels, solar energy can be harnessed.Just think you would not have to pay electricity bills as much as you are paying for so many years? Not only this , even electricity companies pay you instead! The idea is to generate your own electricity for your needs and for this you have to setup a small solar power system at your home,turning your house into a green building.

 GREEN ENERGY:

                 You must have heard of hot discussions on renewable energy.Why such discussions are significant? . Because of pollution, atmosphere on earth is changing in a bad manner. This pollution, is one hundred percent due to human activity on earth. By conventional means of generating electricity, for example ,by thermal means directly pollute environment. While generation of electricity through solar panels is one hundred percent green!. Solar panels usually have long lives, lasting almost 20 years.

HOW CAN I BE PAID BY ELECTRICITY COMPANIES:   

               Now see that on someday you do not need as much electricity as you do daily. for example, you are going on vacations, your solar panels will be generating extra energy

that you do not need. If you have installed a on-grid solar power system, your energy will turn backwards. This means that you are adding energy onto the grid instead of taking from it. Your electricity company will you for that extra energy or you will get discounts on your bills. For this to work, you would first have to check the rules and regulations of your distributor company, that is to see whether if they pay or give discounts in such a situation.That depends upon your electricity connection. 

HOW TO SETUP A SOLAR POWER PLANT AT HOME:

For a professional solar power design process:Solar power design guide!
Things you will need:

1. Solar panels (12V)
2. Solar charge controller (ampere rating depends on your requirement)
3. Battery  (12V)
4. Inverter (220V or 110V)
5. Solar panel fitting 
6. Wiring cables (both DC and AC)            

1) SOLAR PANELS:

Number of solar panels you require depends upon your electricity wattage requirement.

For example:

If wan to operate 2 fans of 80W each and 2 energy savers of 20W each, you would require 3 solar panels of 100W each. If you select 150 W panels, you would require 2 such panels.

This is so because a 100W panel does not give 100W exactly, it can give upto 70W in bright sunlight.

Set the solar panels in the fittings southwards on the roof or backyard, with 30 degrees angle with normal.Solar panels give 12V.

Get your solar panel here: Solar panels Amazon.com 

2) SOLAR CHARGE CONTROLLER:

It comes with ampere ratings . for example , for above combination of load, you will require 20A rating.Get your solar charge controller online:Renogy 30 Amp PWM Charge Controller

3) BATTERY:  

You will require a 12V battery. The best battery would be a deep cycle solar battery.

Get your battery here: Vmaxtanks AGM 125ah 12V

4) INVERTER:

Inverter voltage depends upon your requirement i.e 110V or 220V. The best inverter is the pure sine wave inverter.

Find inverters online: Sunforce 1000 Watt Pure Sine Wave Inverter 

Cobra 1000W 12V DC to 120V 

5) Cables:

You will require 6mm square cable for DC connections i.e. from panels to charge controller and from charge controller to the battery. From inverter you can you the ordinary cable you use with appliance.

Find Cables Online:Renogy 20ft. Solar Cable  
Cobra Heavy-Duty AC Power Inverter Cable Kit

Instead of using a inverter, you can also use DC 12V led lights or energy savers and fans. This will also reduce the initial cost since inverters are costly.

Look for DC Energy savers: 12V DC 20 Watt Compact Fluorescent Bulb - Spiral
Look for DC fans:Energy Saving DC-Motor Indoor Misting Fan with Ultrasonic Humidifier


You can also connect your TV or computer, printers etc with the inverter and run them on free energy.
After setting up these, you will observe a visible cut in your electricity bill.
Go solar, go green!

ack : Shariq Khan (obsparkmatlab.blogspot.com)

Noise Cancellation In Heart Beat Signal MATLAB Source Code

ABSTRACT:Different techniques for cancellation of noise in audio signals are being readily used now a day for different purposes. The basic part of this is a filter, which are of two basic types namely IIR and FIR filters.
In adaptive noise canceling, a measured signal d(n) contains two signals: – an unknown signal of interest v(n) – an interference signal u(n) The goal is to remove the interference signal from the measured signal by using a reference signal x(n) that is highly correlated with the interference signal. The example considered here is an application of adaptive filters to fetal electrocardiography, in which a maternalheartbeat signal is adaptively removed from a fetal heartbeat sensor signal

1. INTRODUCTION
In noise cancellation we want to cancel out noise or extra frequencies from a signal. For achieving this purpose different types of filter are used which process a signal and filter out the undesired signals from the source signal leaving behind a noise free signal.
Different types of filter include low-pass; high-pass, band-pass and band stop which can be designed either as FIR filters or IIR filters

1.1 Problem Statement
In electronic-diagnoses of heart beat doctors find many noise factors added up with the original signal which hinders in the exact diagnoses of disease or even hides many symptoms

1.2 Project Objective

Aims of this project are:

1.2.1 To develop a method to nullify these noises without disturbing the actual signal.

1.2.2 Also to learn about filters, their uses and details about them.

1.2.3 To become familiar with MATLAB tools and functions.
1.3 Project ScopeThis project is divided into two parts; hardware and software development. Hardware device is consisting of filter circuit as a main element while the software is to build a MATLAB program which is to demonstrate the actual working of filter on software.
1.4 Project MethodologyIn this project we formed a desired heartbeat signal by MATLAB commands and also generated a possible noise signal. Then we passed this signal through different filters i.e FIR and IIR, and checked their outputs as MATLAB figures.
2. DESCRIPTIONIn this project we used MATLAB tool to design filters and signals. Description of filters is given below.
2.1 FILTERS

Filters are used to pass desired frequencies and stop rest of it of a given system. Filters may be low-pass, high pass, band-pass or band stop. They can be design as FIR or IIR.
2.1.1 FIR FILTERS

Finite Impulse Response filters can be designed directly in discrete domain. They are non-recursive systems. i.e. they have no feedback part. They are easy to design. Their group delay is linear.

2.1.2 IIR FILTERS

Infinite Impulse Response filters cannot be designed in discrete time domain they sre actually designed in continuous time and then converted to discrete time. They are recursive systems and hard to implement. They have nonlinear group delay.
2.1.3 ADAPTIVE NOISE CANCELLATION

Conventional digital signal processing techniques do exist to extract a desired bio medical signal from a mixed signal which is usually contaminated by unwanted noises. Adaptive filters are used for non-stationary signals where a sample-by-sample adaptation process is required. Applications of adaptive filtering include multi-channel noise reduction, radar or sonar signal processing, channel equalization for cellular mobile phones, echo cancellation and low delay speech coding. This section discussed the concept of the adaptive filtering, adaptive algorithm and the Recursive Least Square (RLS) algorithm.
2.2 MATLAB

Matlab is an effective tool build by Matrix Laboratory. It is being used to develop programs and prototype of different engineering projects. It is effectively used in signal processing too.CONCLUSION
We concluded that the Adapter filters are more effective than FIR and IIR filters as their responses can be seen in the diagram