Transcript of Amrinder Chawla, Anurag Kadasne, Saurabh Pandey, Enkuang “Daniel” Wang, Gowtham Tamilselvan,...
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- Amrinder Chawla, Anurag Kadasne, Saurabh Pandey, Enkuang Daniel
Wang, Gowtham Tamilselvan, Robert Kyle Brown ECE 4007 L03: Prof.
Erick Maxwell 7 th December, 2010
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- Project Overview Design and Cost Objectives Hardware and
Software Results Challenges Schedule and Future Work Project
Demonstration Agenda
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- Combines wireless robot navigation and live video Detects and
provides feedback of CO concentration in ppm Allows emergency teams
to respond to gas leaks Reduces human exposure to CO gas Provides
relief materials to the affected Costs $142.98 Project
Overview
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- Gasbot Setup
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- Remote Computer WebcamSafety Kit eBoxiRobot mbed
microcontroller Parallax CO Sensor Gasbot Setup
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- Design Objectives
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- Proposed and Actual Design Safety Kit Gas Mask CO Sensor Camera
eBox
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- Front View of Gasbot iRobot eBox CO Sensor Camera
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- Project Costs
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- iRobots battery provides 16 V input voltage Input voltage
stepped down to 5 V using 78HT305 regulator Stepped down voltage
provides power to eBox Battery Pack
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- Windows CE 6.0 Learning challenges Failed hard disk TA and Dr.
Hamblen helped eBox OS
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- Based on the work of Dr Hamblen Can control Robot using WASD
keys and P&L for speed Keyboard based for easy operation Remote
Control GUI
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- Camera drivers were not compatible initially When it started
working, the camera broke (internal circuitry broke off) New camera
and compatible software Camera Integration
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- Serial port receive data from CO sensor Character buffer View
exported using a built-in OS feature. Export view feature: main
factor for system choice Serial Port Integration/Exporting
View
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- CO Sensor and V R3 Value 15 V R3 increases as CO level
increases V R3 is read from pin TP1 Value is transmitted to mbed
microcontroller
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- Transferring Data from Sensor to mbed
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- 17 PPM Plot
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- Equation Used to Generate PPM Values
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- Sending PPM Value to eBox Serial Breakout Board 19 Calculated
PPM is sent from pin 28 Value to sent to eBox via serial breakout
board
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- Room temperature condition Set voltage of potentiometer R 4
& R 3 to approximately 0.8 V R 3 voltage divider (buffered
output of sensor) R 4 threshold voltage Sensor Calibration
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- Butane hair curler output varies from 50 ppm to few hundreds of
ppm CO canister most accurate method, output ppm closely matches
listed ppm (+/- 3 ppm) Butane lighter smaller range from 30 to 80
ppm Car exhaust pipe output fluctuates from 60 to 150 ppm Sensor
Testing Methods
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- CO canister is best method to measure accuracy When tested with
other methods, the ppm value fluctuates Other methods only allow
detection of change in ppm Result and Accuracy
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- Safety Kit Designed to maximize space and functionality Used
sign foam to build safety kit Used acrylic cover for the back Can
hold a full size gas mask with filter and walkie-talkie
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- Problems and Solutions
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- Product Research eBox setup Microcontroller CO sensor iRobot
Safety Kit Integration Wirelessly controlled robot Data transfer
between user and robot Testing Finished Product Final presentation
Project demonstration Final project report Schedule Late August
Early September Mid September Mid November Late November Early
December
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- More toxic gas sensors More accurate sensor Different testing
modules Rotating platform for camera Netbook instead of eBox Faster
Car Future Work
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- Questions?