Get%20Up%20Stand%20Up%20GuSu

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Get Up Stand UpGuSu
Group 5 Summer 09

• Andrew Leger
• Joshua Rust
• Matthew OMorrow
• Philip Bell

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Problem

• Cant always wake up on time
• Most alarms are more annoying than waking
• Almost all alarms allow the user to go back to bed

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Solution

• Wake the user on time
• Wake the user gently
• Flexible and robust alarm clock allowing many
  options in both timing and method of waking the
  user
• Make sure the user is awake
• Detect users presence in bed and do not allow
  snooze or off option during their waking time

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Objectives

• Timing
• Internal clock
• Flexibility
• Full user control over what and when
• Seven day alarm time programmability
• Options
• FM tuner integration
• MP3 audio integration via SD card slot
• Tone buzzers
• User detection
• Sensing system for detecting when user is in bed

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Objectives

• For thirty minutes after alarm time, if a user is
  detected by the sensor system, the alarm will
  perform user chosen actions and silence itself
  anytime no user is detected
• The coffee maker will have local on/off control
  and will be remotely controllable by the alarm
  clock
• The alarm clock shall have a battery backup to
  prevent both clock time loss due to power outage
  and snoozing by unplugging
• Power usage will be designed around efficiency

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Specifications

• System will not exceed 12L x 9W x 5H
• It will display time and date in U.S. standard
  format (HHMM) using LCD screen
• Battery backup will last through 8 hours or at
  least 4 hours (average power outage duration)
• PIR sensors will have 15 feet of wire for
  flexible placement
• Wireless integration will have a minimum range of
  100 feet

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System Overview
Matt - Philip
Philip
Josh
Josh
Andrew
Andrew- Matt
Josh
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External Enclosure
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Case Design
Chosen material Wood Top Pushbuttons Front
LCD and Speaker Back Power cable,FM tuning
knob, and SD Card slot Side FM tuning knob
842 AM MP3 Coffee 620 AM
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5
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Microcontroller
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Microcontroller Requirements

• Handles all communication and control between
  external devices
• Must support USART, SPI, and I2C, ADC
• Five push buttons, XBee, MP3 decoder, FM Tuner,
  SD card
• Enough memory for system logic, device
  interfacing and capable of implementing a FAT16
  file system (14 KB)

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ATmega644P Specifications

• The ATmega644P is a 40 pin Advanced RISC
  Architecture microprocessor
• 64 KB Flash memory
• 20 MIPS at 20 MHz
• 8 bit ADC
• Two UART ports
• SPI ports
• I2C port
• Adequate amount of digital I/O
• pins for possible expansion of
• functionality

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Alarm Implementation
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Block Diagram
Audio Amplifier
Multiplexer
MP3 Decoder
Speaker
FM Tuner
Microcontroller
Buzzer
SD Card Reader

• A multiplexer (HI3-0509-5) will be controlled via
  the microcontroller to determine which audio
  device will be powered and passed to the speaker
• A common LM1458 Op-Amp will be used to amplify
  the audio, controlled with a digital
  potentiometer using I2C (AD5171)

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Buzzers

• Two buzzers will be used, the CPE-503 and the
  WST- 1205S
• The CPE-503 will be controlled with ramping
  voltage to slowly grow louder up to a maximum
  output of about 70 dB
• The WST-1205S will be turned on using 5V and has
  a set output of about 85dB, which is just under
  damaging sound levels from prolonged exposure

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FM Tuner

• TDA7000 chip chosen for implementation on a PCB
  without special processing hardware
• Tuning controlled via variable inductor and
  potentiometer, which will be part of the housing
  and connect to the PCB with leads for user tuning

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SD Card Reader

• SD Card will be used for playing MP3 files using
  the FAT16 file system
• Socket will be externally accessible
• Interface to the microcontroller will be SPI with
  only the option to read data

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MP3 Decoder

• STA013 chip used to decode data from SD Card
  through microcontroller SPI interface to speaker
  output
• When ready to receive data the STA013 sends a
  high signal to the microcontroller, simplifying
  implementation
• I2C data interface used for control
• It can determine sampling frequency up to 48 KHz
  and MP3 input rate of 320Kbit/sec, again
  simplifying implementation work required

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User Interface
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Physical user interface

• Five pushbuttons
• Up, Down, Left, Right, Center
• Used to navigate menus during setting
• Used for audio controls while running and not
  within alarm time span

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Liquid Crystal Display

• uOLED-160-G1 (Organic Light Emitting Diode)
• Resolution 160x128 pixels with 256/65K true
  color. Width 1.81 in, Height 1.26 in
• Chosen for 5 pin UART interface and full
  graphical display ability

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Graphical user interface
Running Display
Setting Display

• What options can be changed under current menu
• Current setting
• Highlight current selected setting for
  changing

• Current time
• Day of the week
• Next alarm time
• Selected action and their order

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Sensor system
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Sensor system

• Hypothetical Implementation

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Sensor system

• Wall/Ceiling mounted PIR sensor
• Aimed at bed
• Wired directly for analog reading by GuSu system

• Wooden housing protects sensor and wires
• Allows for painting to match surroundings or
  decorative style
• Helps narrow sensing range to prevent detection
  of warm bodies outside of bedding area

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Wireless Integration
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Wireless Integration
Coffee Machine The coffee machine will be an off
the shelf coffee machine which can be controlled
locally or remotely by the alarm clock. The user
can choose to enable the coffee machine start
time with alarm time.
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Xbee Series 1 Module

• Complete System on Chip module
• Provides wireless serial interface
• Zigbee Compliant
• AES 128 Bit encryption
• Out of the box solution for enabling wireless
  communication between devices

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Clock
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Real Time Clock- DS-1307

• Using an external clock will prevent timing
  issues in program execution.
• Communicates with microcontroller over I2C
  interface
• Stores HHMMSS and DD/MM/YYYY
• Microcontroller pushes the next alarm time to
  the clock which in turn sends an interrupt back
  at alarm time

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Power Supply
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Power Supply
SD Card Reader
Battery Back-up
3.3V Step-Down
5V Voltage Regulator
AC Wall Outlet
Mp3 Decoder
Zigbee
Microcontroller
12V Wall Wart
FM Tuner
Buzzer
Op-Amp
LCD Screen
Clock/Timer
-12V Battery
PIR Sensor

• A 5V and 3.3V DC power supply is required. Also,
  12V and -12V is required to bias the Op-Amp
• A Power LED and battery replacement LED indicate
  status

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Device Requirements
Device Voltage Req. (DC) Current Req. (Active)
Microcontroller 2V 5V lt10 mA
FM Tuner 4.5V 5V 8mA
LCD Screen 4V 6V 10-115 mA (typ. 40)
PIR Sensor 3V 5V lt100uA
Buzzers 4V - 6V 30 mA
Mp3 Decoder 2.4V 3.6V lt30 mA
SD Card Reader 3V 20 mA
Clock/Timer 2V - 5.5V 2 mA
ZIGBEE 2.1V 3.6V 40 mA
Op-Amp 12V and -12V 5 mA
Multiplexer 12V and -12V 3 mA
Totals 2.4-3.6, 4-5, -12, 12 250 mA max
Main power supply is a wall wart that provides
12V DC, and allows for 1A of current
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Backup Battery

• 8 AA batteries in series will serve as the backup
  battery
• These provide the most cost-efficient
  implementation, and are easily replaceable for
  the user
• AA batteries store roughly 2800 mAh of charge,
  so this would provide roughly 12 hours of supply
  to the clock, assuming every device was active

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Schematics
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1

• A common 12V wall wart will be used to provide
  the power
• The backup battery (12V) will only activate when
  there are power outages, and the LED will only
  turn on if the battery is failing
• LM7805 voltage regulator used as step-down, with
  an LED for visible confirmation of power on
• DE-SWADJ is a variable voltage regulator with
  built-in capacitances. It will be used to
  step-down to 3.3V
• The Op-Amp will be biased with the 12V source
  and a 12V battery

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4
5
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Software
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Software

• Creation
• Software Engineers
• Josh Rust
• Philip Bell
• Programming Languages
• Arduino/C
• Development Environment
• Arduino 0015

• Design
• Control all devices and hardware connected to
  microcontroller
• Be complex enough to simplify user controls and
  implement the planned graphical user interface
• Total code size must not exceed 64KB

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Software

• Implementation
• Global variables for all user settings
• Two Main functions RunMode and SetMode invoke
  all other functions and decide behavior based on
  user interaction

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Current State
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Printed Circuit Board

• Current Finalized Design
• Filled Ground plane
• Created with ExpressPCB in conjunction with
  ExpressSCH

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Current challenges

• Another microcontroller may be necessary to
  control MP3 decoder
• Final software design for tree menu navigation
  implementation
• Completion of base requirements in time to make
  productive attempts at extra features
• Complete unit testing of software will be complex

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Project Budget
Components Total Cost
uOLED-160-G1 LCD Display 79.99 (1)
Amtel ATmega644-20PU 7.87 (1)
Sanguino Dev Kit 25.00 (1)
Xbee Modules 46.00 (2)
Coffee Machine 20.00 (1)
Housing/Case Supplies 25.00 (1)
SD Card/SD Card Socket 8.45 (1)
DS1305 Clock Timer 5.06 (1)
TDA7000 FM Tuner 7.00 (1)
Passive Infrared Sensor 3.80 (2)
Directional Infrared Sensor 3.80 (2)
Fresnel Lens 1.75 (5)
PIR Sensor Module 7.40 (1)
Components Total Cost
Infrared Induction Control 2.70 (3)
LP8072 PIR Sensor 1.80 (3)
M7612 PIR Controller 2.70 (3)
STA013 MP3 Decoder 13.80 (2)
28 Pin SOIC Adapater 1.60 (2)
LM7805 5V Regulator 0.51 (1)
DE-SWADJ 3.3V Regulator 15.00 (1)
WST-1205S Buzzer 1.81 (1)
LM1458 Op-Amp 0.50 (1)
EAS-4P15SA Speaker 4.32 (1)
TS5A23159DGSR MUX 0.81 (1)
Printed Circuit Board 80.00 (1)
Miscellaneous 25.00 (1)
Total 391.67
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Project milestones
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Project Progress
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Work Distribution

• Andrew
• Power Supply
• Battery Backup
• FM implementation
• PCB Design
• Audio Output

• Josh
• Wireless Xbee Implementation
• Software Libraries
• External Enclosure Design
• Clock Implementation

• Philip
• Physical User Interface
• Graphical User Interface
• Behavior/Control Software
• Sensor System

• Matt
• LCD Implementation
• MP3 Implementation
• Project Website

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Special Thanks

• Michael Angell UCF B.S.M.E.
• External enclosure schematics for Solid Works
• Construction of external enclosure

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Questions?