ABSTRACT:

A PLC or programmable controller is a digital computer used for automation of electro mechanical processes, such as control of machinery on factory assembly lines.
In past humans was main method for controlling a system. More recently electricity has been used for control and early electrical based on relays. These relays allow power to be switched on and off without a mechanical switch it is common to use relays to make simple logic control decisions.
The development of low cost computer has brought the most recent revolut ....etc

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ABSTRACT
Development of a traffic light control system using PLC (Programmable
Logic Controller) is the title of this project. This project is divided into two parts
which are hardware and software. The hardware part for this project is a model of
four way junction of a traffic light. Each lane has two limits switch (input) function
as a sensor. Three indicator lamps with different colours (Red, Yellow and Green)
are installed at each lane for represents as traffic light signal. This limit switches and
indicator lamps are connecte ....etc

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AUTOMATIC SPEED CONTROLLER FOR FANS AND COOLERS



INTRODUCTION

This is a device to control the speed of fan and coolers automatically. The
device presented here makes the fan run at a full speed for pre determined time. This
speed is decreased to medium after some time and to slow then onwards after a period

of 8 hours, the fan or cooler is switched off.

The circuit consist of IC1 (555 Timer IC) which is used as an astable multi

vibrator use ....etc

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1. INTRODUCTION
Programmable logic controllers (PLCs) are members of the computer family capable of storing instructions to control functions such as sequencing, timing, and counting, which control a machine or a process. The PLC is composed of two basic sections, the Central Processing Unit (CPU) and the Input/Output (I/O) interface system. The PLC measures input signals coming from a machine and through the internal program provides output or control back to the machine.
Ladder logic is the programming language used to ....etc

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I WANT THE ABSTRACT FOR AUTOMATIC SPEED CONTROLLER OF FANS AND COOLERS.

abstract fo speed controller of fans and coolers.

automatic speed controller of fans and coolers ....etc

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Prepared by:
SHAMEER N

Under the guidance of
Dr. S ASHOK


Introduction

In the fast developing world, height of the buildings increased tremendously and the lift has become more of a necessary rather than luxury. When the number of floor increased the control mechanism required for the lift will become more complex. Programmable Logic Controllers are widely accepted industrial control device. With the growth in technology PLCs are now capable of advanced data manipulations, communications ....etc

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Hi,
visit this thread for more details on this topic:
http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-coolers?pid=13633#pid13633
http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-coolers?mode=linear
http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-coolers?pid=13633#pid13633
....etc

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Abstract

A digital computer used for automation of electromechanical processes, such as control of machinery on factory assembly lines, amusement rides, or lighting fixtures. PLCs are used in many industries and machines is called a programmable logic controller (PLC) / programmable controller. The PLC is designed for multiple inputs and output arrangements, extended temperature ranges, immunity to electrical noise, and resistance to vibration and impact.
A PLC has many input terminals, through which it interprets high and low ....etc

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During summer nights, the temperature is initially quite high. As time passes, the temperature starts dropping. Also, after a person falls asleep, the metabolic rate of one s body decreases. Thus, initially the fan/cooler needs to be run at full speed. As time passes, one has to get up again and again to adjust the speed of the fan or the cooler.The device presented here makes the fan run at full speed for a predetermined time. The speed is decreased to medium after some time, and to slow later on. After a period of about eight hours, the fan/ ....etc

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to get information about the topic automatic speed control for fans and coolers full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-and-coolers-full-report

http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-with-on-off-control-by-light

http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-coolers

http://seminarsprojects.net/Thread-automatic-speed-controller-for-fans-with-on-off-control-by-light ....etc

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