DESIGN AND FABRICATION OF A THIEF DETECTOR SYSTEM FOR A PARTICULAR OBJECT (MOBILE)

OBJECTIVES

1.The aim of this project is to detect thief for a particular object such as mobile .
2.By user authentication code (a password) the owner can take easily his object .
3.To Design and fabricate the controller circuit .

KEY REQUIREMENT
1.Microcontroller(PIC16F84A)
2.IC (TX-2B)
3.IC (RX-2B)
4.Vero Board
5.NPN Transistor (BD135)
6.Switch
7.Crystal (4MHZ)
8.Infrared Transmitter
9.Infrared Receiver
10.OPAMP (LM324)
11.Variable resistor (10K)

ADVANTAGES

1.It detects thief instantly
2.Only owner can inform about this
3.It is easy to design and fabricate

AUTOMATIC OCCUPANCY OF COOLING FAN OPERATION

INTRODUCTION

1.As the world gets more and more technologically advanced, we find new technology coming in deeper and deeper into our personal lives even at home.

2.Human also mostly demands something that can be easily to be used without wasting energy.

3.This project has developed a system that automatically controls the fan in a room based on room occupancy,

OBJECTIVES

1.To develop an automatic fan system using infrared sensor to detect room occupants to turn the fan on and off when empty.

2. To develop an automatic fan system that can preview the status of the human presence in the liquid crystal display.

THEORY OF OPERATION

1.Power supply to convert 220V AC to DC.

2.Sensing units that convert body motion into analogue electrical signals.

3.Analogue comparator to convert analogue signals into digital signals.

4.Microcontroller to process these digital signals and send the appropriate command to the fan motor.

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BIOGAS PRODUCTION FROM THE MIXTUER OF WATER HYACINTH AND COW DUNG

OBJECTIVES
1. To produced bio gas from the mixture of water hyacinth and cow dung.
2. To study about bio gas.
3.To calculate the amount of gas production during experiment.
4.Analysis for improving biogas production rate.
BIOGAS
Biogas originates from bacteria in the process of bio-degradation of organic material under anaerobic (without air) conditions.
ANAEROBIC DIGESTION:
Anaerobic digestion (AD) is the bacterial fermentation of organic material in the absence of air.
STAGES
i. Hydrolysis
ii. Acid genesis
iii. Acetogenesis
iv. Methanogenesis

BIOGAS PRODUCTION RATE IMPROVEMENT
1.Temperatures range: 27° c to 35 ° c
2.C/N ratio: Ranges from 20:1 to 30:1
3.Methane producing bacteria require a neutral to slightly alkaline environment (pH6.8 to 8.5) in order to produce methane
4.Toxic materials such as fungicides and antibacterial agents can have an adverse effect on anaerobic digestion
5.Addition of foreign materials such as animal bedding, sand and silt can have a significant impact on the anaerobic digestion process
 
USES OF BIOGAS
1. Production of energy for lighting, heat, electricity
2. Improved sanitation (reduction of pathogens, worm eggs and flies)
3. Reduction of workload (less firewood collecting) and biogas stoves has a better
cooking performance
4. Environmental benefits (fertilizers substitution, less greenhouse gas emission)
5. Improved indoor air quality (less smoke and harmful particle emission of a biogas stove compared to wood or dung fuels)

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