DESIGN AND IMPLEMENTATION OF LIGHTING SWITCHING CONTROL SYSTEM (INTERFACE)

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DESIGN_AND_IMPLEMENTATION_OF_LIGHTING_SWITCHING_CONTROL_SYSTEM_(INTERFACE)

CHAPTER ONE
INTRODUCTION
1.1 BACKGROUND OF THE STUDY
Traditionally, high control in home and office environments takes place through
switches (on/off), deals and sliders (dimmers) and sometimes motion sensors.
These controls can be incorporated in the built environment such as walls, or
attached to lights that people place themselves (desk lamps, bed side lights). This
often leads to a jumble of controls each with their own location, interaction style,
and focus.
This project is a demonstration of how a PC can be used as a control signal
generation subsystem capable of generating programmable control signals for
power equipment. Early studies reveal that using PC for power management was
often fou7nd to be up to 25% more than energy star compliant methods.
However, recent assessments have found higher rates, and was estimated that
for power management.
Switching control is a good replacement for conventional pneumatic or Electro
chemical high voltage AC control. This equipment is capable of not only control
but energy management and system diagnostic functions. The PC control in
inherentlyhas more accurate control because it reduces maintenance and
recalibration problems common with pneumatic and mechanical systems.
It offers other unique advantages like subsystem coordination, optimum start,
diversity analysis and retrofit identification.
2
This design begins with the fact that a computer is needed to light bulbs of high AC rating. This immediately suggests that an interface of the PC is needed to handle the mismatch in voltage and currents between the PC and bulbs.
Secondly the control data from the PC program are logic levels in serial format and at high frequency. This again means that the interface should understand the protocol of communication and convert it to the necessary parallel control singed.
Due to lack of resources, the project will not be real but simulated. This system will represent for more than just manual on/off control. The system comprises of two major components, output device, and input device. Output devices work behind the scenes to control the lights by switching them off or on. Input device are the switcher i.e. the button or sensors.
1.2 PROBLEM STATEMENT
 No prior information whether a bulb is dead or not
 There is always a problem of one or two poles using one switch. That is each pole with a switch which could amount to lots of expenses. Each pole with their own switch and location.
 It consumes ones time in the sense that one will more from one pole to another. Just to put one or off the light.


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