Automatic Light Control Device - PowerPoint PPT Presentation

Loading...

PPT – Automatic Light Control Device PowerPoint presentation | free to download - id: 16f23d-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Automatic Light Control Device

Description:

... of all electricity consumed nationally, lighting is often overlooked as a ... Disadvantages of Current Light Control Systems ... – PowerPoint PPT presentation

Number of Views:240
Avg rating:3.0/5.0
Slides: 17
Provided by: prof5
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Automatic Light Control Device


1
Automatic Light Control Device
Team leader Brad Lowe Team members Marshalia
Green John Thompson
Lutrisha Johnson Faculty Advisor Dr. Robert
Reese
2
Team Responsibilities
Research Documentation Website Micro-controller Component Interfacing Power Supply
Marshalia Green X X X X
Lutrisha Johnson X X X X
Brad Lowe X X X X
John Thompson X X X X
3
Abstract
  • With the current electricity shortage, energy
    conservation has become a heavy consideration.
    Although it makes up 17 of all electricity
    consumed nationally, lighting is often overlooked
    as a potential source of conserving energy. The
    automatic light control device will use
    photoelectric beams to detect and keep track of
    the occupants of a room, keeping the lights on
    until the last person leaves. This system could
    potentially reduce light usage of a room by as
    much as 55.

4
Energy Consumption Comparisons
5
Money Saving Potential
  • For a room with 64 20-W fluorescent bulbs, 1.28kW
    of power is consumed hourly.
  • Studies by the Department of Energy suggest that
    interior lights are needlessly on for an average
    of 6 hours per day.
  • Using the ALCD would produce a yearly savings of
    140 (at 0.06 per kWh).

6
Disadvantages of Current Light Control Systems
  • Motion and audio sensors are susceptible to
    activation due to false signals, and they may
    turn off lights if occupant stays still or
    remains silent.
  • False activation causes the lights to needlessly
    cycle, which consumes more power than if they
    were to stay on continuously.

7
Design Diagram
01
8
Design Requirements
  • Power consumption
  • System will operate at 120V 60 Hz AC
  • Control unit will consume a negligible amount of
    power (lt 1.5W).
  • Size
  • Control unit must fit in a standard light switch
    socket (4.5 x 3.5 x 1.5)

9
Design Requirements
  • Installation
  • Comparable to installing a light switch (can be
    done by anyone with basic knowledge of electrical
    wiring)
  • Life expectancy
  • Minimum life expectancy of 10 years

10
Design Requirements
  • Expandability/Adaptability to Environment
  • Adaptable to incandescent or fluorescent lights
    via a toggle switch
  • Able to manage up to 3 doorways
  • Optional light sensor can prevent switch
    operation if light level is high enough from
    outside sources, such as a window

11
System Components
12
Test Specifications
Requirements SPICE/ Electronic Workbench MPLAB Performance Testing
Power consumption X X
Adaptability X X
Microcontroller X X
Photosensors X
Motion Sensor X
Voltage Transformer X
AC/DC Converter X
Relay X
13
Schematic of Power Supply
14
Simulation Results of Power Supply
15
Schematic of Voltage Regulator
16
The End
About PowerShow.com