Sr' Design Presentations Slides

1
Sr. Design Presentations Slides Fall 2008
2
AUV 2009 Sonar Subsystem
GOAL (1)Provide real-time guidance information
to an AUV that seeks sonar beacons. (2)The system
shall be capable of communication over USB when
USB is connected for status
APPROACH

• Capture sonar pings and convert to digital
  samples
• Use FIR Filters to filter based on desired
  frequency
• Find start times of each hydrophone and transmit
  to single board computer
• Possibly save waveforms in flash for more complex
  calculations on CPU
• Engineering Find adequate sampling rate based
  on Nyquist rate, overcome bandwidth restrictions
  based on UART/SPI limitations, meet voltage needs
  for discrete components

3
Autonomous Underwater Vehicle Motor Controller
GOAL To design a complete motor control system.
APPROACH

• USB controlled, self-contained system.
• Produce variable PWM current to drive
• motors.
• Monitor output current to aid in vehicle
• fine positioning and system self-
• testing.
• Design enclosure to enable rapid
• in-field maintenance and assured hull
• integrity.
• Engineering Design isolated logic and
• high current circuits. Minimize thermal
• dissipation. Write control software and
• communications protocol. Integrate
• system into existing vehicle architecture.

Mechanical Enclosure
Hardware Block Diagram
Software Block Diagram
USB to FTDI Serial Converter
High Current Section
MSP430 Microcontroller
4
Design and Hardware Implementation of a 2-D MIMO
Lattice Filter With Applications In Signal
Processing
GOAL To Design and Implement a Demux using a
Novel 2-D MIMO Lattice Structure
APPROACH

• Choice of filter coefficients for hardware
  implementation of demux using System Generator
  and Spartan FPGA
• Implementation of demux using other filter
  realizations Direct Form II Lattice Ladder
  structure
• Comparison of filters characteristics
  sensitivity to quantization noise, hardware
  complexity area, power and delay

Fig 1. Main Filter Structure Unit
Conclusion
Fig 2.The Filtered Output

• Successfully implemented the 2-D MIMO lattice
  filter
• More advantages over other filter structures

Fig 3. Sum of Two Sinusoids
EE Senior Design Day (Team 3) Erik Jonsson School
of Engineering and Computer Science
5
Baby on Board Car-seat Monitoring System

• GOAL
• To design an infant car-seat that warns parents
  with an alarm if they have left their children in
  the car.
• To minimize false alarms.

APPROACH

• Use multiple methods of detection to minimize
  false alarms pressure sensor, seat belt sensor,
  temperature sensor, ignition key presence, door
  open/closed
• Create multiple levels of alarms to distinguish
  between gentle reminders and dangerous
  situations soft alert and hard alert
• Engineering Microcontroller implementation
  using TI MSP430 - coding microcontroller and
  creating circuitry to integrate sensors with
  correct input/output voltage levels

6
Analog Frontend for
Portable Phono-Electro-Cardiogram

• Goal
• Develop the analog frontend for a portable,
  non-invasive, multi-faceted cardiogram for use in
  home, field and clinical settings

• Approach
• Capture a patients ECG signal and heartbeat
  with electrodes and a stethoscope-mounted
  electret microphone
• Use common-mode rejection and analog filters to
  remove noise
• Use amplifiers to increase measured voltage
  levels

• Engineering
• Implemented virtual ground to handle single-rail
  voltage supply due to low-power design
• Implemented computer-controlled trimmer to
  adjust amplifier gain and filter cutoff
  frequencies
• Used an output buffer to handle impedance
  matching to an ADC

EE Senior Design Day (Team PECG) Erik Jonsson
School of Engineering and Computer
Science December 4, 2008
7
Perpetually Charging Phone
GOAL To (1) Design and implement components and
circuitry to provide a perpetual charge to a
mobile phone while outdoors, and (2) Provide
charging current to a mobile device without
damaging the battery
APPROACH

• Gather maximum current and voltage from the
  photovoltaic cells
• Boost the voltage to the 5V required from the
  phone charging circuit
• Maximum current output was conserved using
  efficient devices
• Engineering Determine voltage required from
  phone to charge battery, find min-max voltage
  from pv cells, build circuitry to match input and
  output

8
Smart Walking Stick for the Visually Impaired
GOAL To develop a prototypical walking stick
which will assist visually impaired users to
navigate safely around obstacles in their
environment and also caution others of the
presence of the user
APPROACH

• Monitor distance from obstacles, ambient light
  conditions and react to changes accordingly
• Alert user to obstacles using discrete modes of
  vibration and toggle flashing LEDs if low light
  intensity is encountered
• Allow user to manually activate audio beeping
  system which can alert nearby people
• Engineering Coding of BS2 Micro-controller,
  design of photoresistor/beeper circuit,
  corresponding power supply, and project
  integration

9
Biometric Sensor Interface

• GOAL
• To design and implement a device that can
  translate the vibrations created by the heart
  and lungs into interpretable biometric data.

APPROACH

• Piezoelectric Film sensor characteristics
• Sensitivity
• Mounting methods
• Average Voltage/Power Output
• Hardware R D
• Filter
• Amplifier
• Unity Gain Buffer
• Software
• AD Conversion
• Pulse Detection Method
• Data Simulation

10
Wearable Wireless Sensor Node for Medical
Monitoring
GOALS (1) Design a wireless sensor node that can
enable medical monitoring (2) Enable Wireless
Communications (3) Ensure compatibility with
current data collection schemes
APPROACH

• Augment an Existing design to serve as
• blueprint.
• Design a comprehensive system that is
  simple and reliable yet flexible for
  future needs.
• Work under constraints of size, time and
  cost.
• Divide work around knowledge and capability
  to exploit each team members
• unique perspective.
• Results include a WSN design that will go into
  production, external battery charger
  circuitry and UART to USB connectivity.
  Software produced also enables
  communications.

11
PAPER CURRENCY IDENTIFIER
FOR THE VISUALLY IMPAIRED
GOAL
To create a currency identifier for the blind
which is faster and more convenient than those
already on the market.
RESULTS

• A completely hands-free paper currency
  identifier worn around the neck.
• Prototype version capable of recognizing all
  bills up to 20.

• Specially designed recognition software runs on
  a low-cost 8-bit microcontroller.
• Employs a low-resolution CMOS camera rather than
  expensive imaging hardware.

EE Senior Design Day (Team 10)
Eric Jonsson School of Engineering Computer
Science
December 4th, 2008
12
Low Cost Home Power Efficiency Solution
GOAL To (1) Develop a low cost easily
installable home power minimizing solution (2)
Find new methods to maximize capabilities and
negate shortfalls of inexpensive control devices
(3) Develop inexpensive alternatives to high
priced existing power management features.
APPROACH

• Utilize low cost X-10 control devices to handle
  appliance/lighting controls
• Monitor real time household power consumption
• Utilize wireless mesh technology to determine
  user proximity
• Develop custom control software to analyze,
  calculate and control home power usage based on
  time, power consumption preferences, device
  priority, user proximity and profile management.

December 4, 2008
(Team11)
13
Vital Sign Monitor with Wireless Alert System

• OVERVIEW
• Collect and monitor a persons vital signs using
  biometric sensors.
• Transmit collected data via Bluetooth to a mobile
  device.
• Receive vital data and compare against users
  normal range
• Output message to user/dial emergency personnel
  if data is out of range

SYSTEM PROCESS

• Biometric sensors send users vital sign data to
  Arduino BT module
• Data is formatted for transmission and stored
  within Arduino module
• The module sends the data via Bluetooth to a
  mobile device
• The mobile device analyzes the data using a Java
  based program
• If users vital signs are
• In range Store data on memory card in text
  format
• Out of range Alert user/Send SMS
• Emergency personnel can access vital data using
  memory card reader

December 4, 2008
14
Autonomous Surface Vehicle

• OBJECTIVE
• Design a surface vehicle for AUVSI 2009
  Autonomous Surface Vehicle Competition.
• GOALS
• 1) Use LabVIEW to develop Vision and Navigation
  systems
• 2) Integrate the new architecture with autonomous
  surface vehicle prototype
• APPROACH
• State machine for different objectives and tasks
• Camera, GPS, and range finder sensors for
  navigation and competition tasks

15
Telecom Enabled Door Locking System
Goal To create a unique and affordable stand
alone, touch-tone controlled home security system
that will enable customers the convenience of
accessing the system through the telephone

• Approach
• Improve the design of the circuit
• Build a functional circuit
• Design and build a working prototype

• Result
• Create functional stand alone device which
  enables a user to lock or unlock a deadbolt with
  a telephone
• Establish easy to install device, and affordable
  to manufacture

• Senior Design II
• Develop and produce a functional prototype
• Add convenient remote control application for
  lock

Present By Vu Duong Francisco Godinez Priest
Meng Daniel Depew-Thien Nguyen
Email kalamseniordesign_at_yahoogroups.com
Erik Johnson School of Engineering Computer
Science
16
Ref for the Deaf
Goal To enhance and complete last semesters
system that alerts hearing impaired athletes to
an officials whistle.


Vibrating Wristband
Programmable Transmitter
Designated Digital Signal (2.4GHz)

• Problem Definition Hearing Impaired athletes
  have difficulty responding to a referees whistle.
• Solution A vibrating bracelet that responds to a
  whistle sensor that is worn by the referee.
• Results Proof of principle prototype built and
  field tested.

Design Partnership
17
Home Automation System
GOAL To prototype a wireless home automation
system to improve efficiency and control of power
consumption through power metering and remote
light/outlet switching.
APPROACH

• Constructed a prototype system consisting of a
  control unit, PC interface, and outlet node.
• Built all hardware Outlet Node, RS232 to USB
  board, and Control Unit.
• Implemented wireless communication between all
  nodes and the control unit
• Created communications link between PC and
  control unit (RS232 to USB)
• Programmed a custom user interface for the PC in
  Java

Control Unit
Outlet Node