Transcript Project overview presentation ()

Inertial Measurement Unit
Project Advisor:
Dr. Basart
Client:
Matt Nelson
Team Members (491):
Matt Ulrich
Luis Garcia
Amardeep Jawandha
Julian Currie
Team Members (492):
Matt Clausman
Jesse Griggs
Christina McCourt
Andy Schulte
Shobhit Vaish
Project Description
Our overall goal is to develop a product that
accurately detects movement of the ImAP system.
It will measure and record six degrees of
movement. The entire ImAP system will be used to
collect crop health data.
Problem Statement
Currently, the ImAP system does not have a way to
store the all the information of it’s movements over
long period of time. This data would be extremely
useful for post-flight analysis.
System Description
The image capturing system will be mounted as a payload attached
to a high-altitude weather balloon. This system will be developed to
capture images at predetermined waypoints. There is a GPS
receiver, a transmitter with a modulator that sends the GPS
coordinates to the ground station, an onboard computer for
controlling the flight, the horizon detection system, and a camera
system that is on a gimbaled platform.
After the images are collected, image analysis software is used to
extract the image intensities, and make geometric corrections. The
final images will be transferred to the plant pathology team who will
interpret the images. Data acquired using on-board orientation, light,
humidity, pressure, and temperature sensors will be used to better
understand atmospheric conditions during the flight
Concept Sketch
System Block Diagram
User Interface Description
The user will launch the ImAP system into the air
where it will be anchored to the ground. At that
point, the system will be behave independently of
the user. After flight, the user can connect the IMU
system to a computer and view data via a USB
connection.
Functional Requirements
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FR01:
IMU shall measure balloon oscillation frequency and angular
rotation rate to one degree per second.
FR02:
IMU shall measure to 0.01g for each of the three principle axes.
FR03:
Data logging system shall be able to log at a 100 Hz rate with 10 bit
or greater precision.
FR04:
IMU shall receive power from a 11.1 V nominal lithium-ion battery
FR05:
IMU shall function for a minimum of 2 hours using a 4 Amp-hour
battery pack
FR06:
IMU shall operate over a temperature range of -40˚ C to +85˚ C
Non-Functional Requirements

Microcontroller may monitor current and
voltage levels during flight
Work Breakdown

Spring 2008
Personnel
Luis
Julian
Matt
Amardeep
Total
Gyro and
Accelerometer
Research
Microcontrolle
Microcontrolle
Gyro and
r and Flash
r and Flash
Accelerometer
Memory
Memory
testing
Research
Testing
Operational
Manual
Documentatio
n, planning &
organization
Total Hours
30
10
50
18
30
40
178
10
30
15
70
20
25
170
25
8
55
15
35
30
168
30
10
45
20
25
30
160
95
58
165
123
110
125
676
Work Breakdown
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Fall 2008
IMU Circuit
Board Design &
Testing for Data
Acquisition
Gyro and
Accelerometer
Calibration
System
Integration
Operational
Manual
Documentation,
planning &
organization
Total Hours
Luis
50
35
35
25
35
180
Julian
60
17
55
20
35
187
Matt
40
45
35
20
35
175
Amardeep
40
45
30
25
40
180
Total
190
142
155
90
145
722
Personnel
Budget

Spring 2008
Item
Cost
Parts and materials
Rate Gyro
Accelerometer
Four Atmel Mega 128 Microprocessors
Subtotal
Student labor $10/Hr
Total

$
65.00
$
45.00
$
36.60
$ 146.60
$ 6760.00
$ 6906.6
Fall 2008
Item
Cost
Parts and materials
Two circuit boards
Three rate gyros
Three rate gyros
Five Atmel Microprocessors
Ten Flash Memory Chips
Passive Circuit Board Components
Two USB cables
Subtotal
Student labor $10/Hr
Total
$ 140.00
$ 195.00
$ 135.00
$
45.75
$
49.14
$
30.00
$
16.00
$ 610.89
$ 7220.00
$ 7830.89
Spring 2008 Schedule
Fall 2008 Schedule