electrical and computer engineering smart goggles to chong ryan offir matt ferrante james kestyn...
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![Page 1: Electrical and Computer Engineering SMART GOGGLES To Chong Ryan Offir Matt Ferrante James Kestyn Advisor: Dr. Tilman Wolf Preliminary Design Review](https://reader036.vdocuments.site/reader036/viewer/2022062421/56649d2d5503460f94a0472c/html5/thumbnails/1.jpg)
Electrical and Computer Engineering
SMART GOGGLES
To Chong
Ryan Offir
Matt Ferrante
James Kestyn
Advisor: Dr. Tilman Wolf
Preliminary Design Review
![Page 2: Electrical and Computer Engineering SMART GOGGLES To Chong Ryan Offir Matt Ferrante James Kestyn Advisor: Dr. Tilman Wolf Preliminary Design Review](https://reader036.vdocuments.site/reader036/viewer/2022062421/56649d2d5503460f94a0472c/html5/thumbnails/2.jpg)
2Electrical and Computer Engineering
Augmented Reality Goggle Application
An Example of Augmented Reality Goggle Application
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3Electrical and Computer Engineering
Project Overview
Augmented reality vision technology• Sensing a user’s location and direction of view• Computing what to display in the user’s field of view• Displaying the visual content without obstructing the
user’s view of real objects
Simple, efficient, and functional smart goggle• Sensor unit• Intel Atom Processor• Goggle-based display
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4Electrical and Computer Engineering
Design Layout
GPS
CPUIntel Atom
MCUOpenGL
Sensor Board
MemorySensorData
U S B V G A
Sensor Filter
Gyro Compass/Accelerometer
+
Tunnel Creek Board
BatteryPack
T W IUART
DISPLAY
System Block Diagram
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5Electrical and Computer Engineering
Conceptual System Design
Bird’s eye view of the system design as worn
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6Electrical and Computer Engineering
Hardware & Software Components
Sensor board• GPS• Gyroscope• Compass/Accelerometer• AVR microcontroller
∙ Kalman filter
Intel Atom Processor – Tunnel Creek board• Windows Embedded 7 OS• OpenGL – API and graphical application
Goggle - Provided by Microvision, Inc.• VGA connection
Battery Pack – 12V
Sense location and direction of view through a Kalman filter
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7Electrical and Computer Engineering
Sensor Board
PCB• Size: 1 x 2.5 in• Consumes < 0.8 W @ 3.3 V• GPS - USART• Gyroscope, Compass, Accelerometer – I2C• USB-powered, 3.3V and 1.8V regulators• On-board 32-bit microcontroller• Design completed• Sending out this week
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8Electrical and Computer Engineering
GPS – MN1010
USART connection to the microcontroller Determines the location of the user Features:
• 12-channel GPS receiver, RF filtering, flash memory• Operates at 1.8V @ 35mA• < 75 mW total power consumption• 10mm x 10mm x 2mm, 36 pin LGA packet• Outputs NMEA-0183 string @ 1 PPS• Frequency: 1575.42 MH
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9Electrical and Computer Engineering
Gyroscope - L3G4200DTR
I2C bus connection to the microcontroller Determines head orientation of the user Features:
• Operates at 3.3V @ 6.1mA• Three-axis angular rate sensor
• X-axis: pitch axis• Y-axis: roll axis• Z-axis: yaw axis
• 16 bit-rate value data output
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10Electrical and Computer Engineering
Accelerometer/Compass - LSM303DLHC
Single I2C bus connection to the microcontroller Accelerometer determines head movements Compass determines the direction user is facing Features:
• 3.3V @ 0.11 mA• 3 magnetic field channels and 3 acceleration channels• From ±1.3 to ±8.1 gauss magnetic field full-scale• ±2g/±4g/±8g/±16g selectable full-scale• 3x5x1mm
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11Electrical and Computer Engineering
AVR Microcontroller - AT32UC3B0256-Z2UT High Performance, Low Power AVR®32 UC3 32-Bit
Microcontroller Executes > 1 MIPS / MHz Universal Serial Bus (USB) Bootloader Internal High-Speed SRAM, Single-Cycle Access at
Full Speed: 96KB (256KB Flash) Single Cycle Access up to 60 MHz Single 3.3V Power Supply Implements the Kalman Filter
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12Electrical and Computer Engineering
Kalman Filter
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13Electrical and Computer Engineering
Kalman Filter
A recursive predictive algorithm Increases accuracy of noisy measurements Measurements: Gyroscope, Accelerometer,
Compass, GPS Inputs: Measurements, Previous State of
System, Bias Terms Outputs (State Vector): Location, Orientation Predicts the users location/orientation based
on previous values, measurements, covariance, and noise
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14Electrical and Computer Engineering
Kalman Filter
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15Electrical and Computer Engineering
Intel Atom E680 – Tunnel Creek
Operates at 1.6GHz Up to 2GB DDR2 1MB BIOS Flash, on-board
reprogrammable VGA port USB port 2 x SATA hard disk interface 2 x 1000 BaseT Ethernet ports Small size – 75 x 65mm (What is
the size from Cornell????) 6W power consumption
(Cornell???) Supply voltage: 5V (Cornell spec
please!!!)
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16Electrical and Computer Engineering
Software Windows Embedded 7 OS Develop 3D environment application with
OpenGL OpenGL allows us to easily update graphical
position Translate users movement and orientation
into a virtual environment to be used for 3D graphic application
API Development
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17Electrical and Computer Engineering
Picture example of openGL over image
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18Electrical and Computer Engineering
Picture example of openGL over image 2
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19Electrical and Computer Engineering
Goggle-Based Display
VGA connection port Input image projected on corrective lens Semitransparent reflective lens To be provided by Microvision, Inc.
http://www.microvision.com
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20Electrical and Computer Engineering
Cost Schedule
Components PriceSensor board components $71.00PCB Manufacturing $150.00Battery $50.00Intel Atom E680 $150.00Total $421.00
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21Electrical and Computer Engineering
Battery
12VDC battery pack
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22Electrical and Computer Engineering
Proposed MDR Deliverables
Demonstrate the orientation of the Sensor Unit Design a simple 3D environment using OpenGL
• PC version
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23Electrical and Computer Engineering
Questions