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David Meyers, Jared Santinelli, Phillip Robinson, Nazar Trilisky. Smart Home: RFID Access Control and Automated Lighting System . Georgia Institute of Technology School of Electrical and Computer Engineering October 23, 2008. Project Overview.

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smart home rfid access control and automated lighting system

David Meyers, Jared Santinelli, Phillip Robinson, Nazar Trilisky

Smart Home: RFID Access Control and Automated Lighting System

Georgia Institute of Technology

School of Electrical and Computer Engineering

October 23, 2008

project overview
Project Overview
  • Goal:Prototype of an RFID-based access control system featuring adaptive lighting
  • Target Customer: Builders and developers of Multiple Dwelling Units (MDUs)
  • Motivation: Increase security and convenience while saving money
  • Target Cost: Prototype < $500
design objectives
Design Objectives
  • Provide automated entry/exit and identification using RFID
  • Supply the ability to track occupants within a database
  • Automate hallway lighting dependent upon user destination
  • Turn on foyer light based on current natural lighting conditions
  • Use electric door strikes to lock doors for security
design overview
Design Overview
  • Basic Layout
    • Red- “Entrance/Exit Module”
    • Green – “Room Module”
rfid component
RFID Component

Phidget RFID Reader (USB)

  • Board Dimensions: 6.8 x 8.1 cm
  • EM4102 Passive Tags @ 125 kHz (Read Only)
  • Read Range (depends on tag type)
    • Vertical: 0.5 in to 4 in
    • Lateral: 0.5 in to 2 in
  • Min Distance Between Readers: 1 m
  • Available +5 VDC and LED Output
ebox device
eBox Device
  • eBoxII
  • Available Interfaces
    • 3 USB ports – For RFID Reader Communication
    • 1 RS-232 port – For Microcontroller Communication
    • 1 Ethernet
    • 1 Monitor Connection
    • PS/2 Mouse/Keyboard Connection
  • OS/Application languages
    • Windows CE 6.0
    • C/C#/C++/Java
cypress microcontroller
Cypress Microcontroller
  • CY8C29466-24PXI
    • 19 Digital General Purpose I/O Pins
    • Maximum 80 mA combined IOH budget
    • VOH = Vdd – 1 V = 4 V Min.
    • VOL = .75 V Max.
  • Interfaces
    • eBox: RS-232 TxD Pin #3  Rx8 Serial Reader
    • Circuit: I/O Pins wired to transistors
circuitry microcontroller relays door strike
CircuitryMicrocontrollerRelays, Door Strike
  • Door Strike (SD-995C)
    • Triggered with 7.3 V differential
    • Fail-safe or Fail-secure modes
  • Relays
    • Operate at 80-100% of specification voltage
    • DP-DT increases scalability
  • Photovoltaic Switch
circuitry motion detector timer
CircuitryMotion Detector & Timer

kc7786 - Passive Infrared Sensor (PIR) module

Lens angle: 60° vertical, 100° horizontal

Created from +12 VDC using 555 timer

C1 and R3 determine timing characteristic

demonstration
Demonstration

Test 1: Invalid Tag

Test 2: Valid Tag Room 1

Room Door Unlocks

Light On

Test 3: Valid Tag Room 2

1

Room Door

Hallway

Main

Door

Lights On

Main Door Remains Locked

Main Door Unlocked

Main Door Locks

Lights On

2

market cost analysis
Market & Cost Analysis
  • Cost Analysis:
    • Prototype Cost – Approx. $451.97
    • Target Price for 50-unit building - $38,600.00
    • Based on 490 units sold, 5 year profit - $1,090,119.00
  • Current Market:
    • Non-Integrated Devices - ~11% cheaper, less flexible
    • Best Buy ConnectedLife.Home - $15,000 for typical 3-bedroom family residence
project schedule current status
Project Schedule & Current Status
  • Complete
    • Design and Theory
    • Initial Component Testing
    • Motion Detector/Timer Circuit
  • In Progress
    • eBox Software Testing (11/12/08)
    • Circuit/Simulation Environment Construction (11/12/08)
    • Microcontroller Software Testing (11/12/08)
  • Planned
    • System Integration and Testing (11/12/08 – 11/28/08)
    • Ready for Demo and Presentation (11/28/08)