Transcript System Overview

Development of a wireless telemetry
system for model rocketry
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To develop a wireless telemetry system for a model
rocket using both a microcontroller and a Tri-Axial
Accelerometer.
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To develop a host PC app which is portable.
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The info is passed from the microcontroller to the PC
via wirelessly
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The host PC program will manipulate the data.
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Contingency to be carried out if the wireless
connection breaks/out of range.
System Overview
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Rocket Details
Project Overview
Hardware Overview
Setup
Tri axial Accelerometer
ToothPIC
Final Deliverables
Hardware
Software
Conclusions
Questions
ToothPIC Device
Microcontroller
Individual Sensor
Signals for X, Y, Z
axis
LinkMatic
Bluetooth
Transceiver
Commands
Base Station
Host PC
Telemetry
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The Model rocket can log a 3 minute rocket
flight to the flash at 7o samples per second.
An OK command is sent to the back to the
Java App to acknowledge memory is full.
A streaming mode was considered if the
connection never breaks.
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The output for the accelerometer is still to
noisy and can be reduced by implementing a
band pass filter in Java.
This eliminates the hardware for the model
rocket.
The accelerometer is powered for a coin cell
of 3.3V
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ToothPIC is powered by a 3.3V coin cell
battery
Hardwired to the accelerometer.
Light Weight
Small
Under 100g
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The electronics fits snugly into a model rocket.
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Can be powered for a 3 minute flight can obtain data from
the accelerometer
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Removal of all unnecessary circuitry
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PC Application that can configure the ToothPIC and take in
command s from the user.
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A Java Application that can graph a set of results
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A Java Application that can read or write data to a text
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Developed customised firmware for the
ToothPIC
Unnecessary delay before in semester one in
obtaining the chip
Lack of actual testing for software and the
launch of rocket (should work in theory).
Any
Questions ??