High Altitude Balloon Data Logger for Scientific Payloads Presented by: Dallas Hodge Spring 2014...
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Transcript of High Altitude Balloon Data Logger for Scientific Payloads Presented by: Dallas Hodge Spring 2014...
![Page 1: High Altitude Balloon Data Logger for Scientific Payloads Presented by: Dallas Hodge Spring 2014 2014 Space Grant Symposium 1.](https://reader030.fdocuments.in/reader030/viewer/2022032708/56649e585503460f94b50936/html5/thumbnails/1.jpg)
High Altitude Balloon Data Logger for Scientific Payloads
Presented by: Dallas Hodge
Spring 2014
2014 Space Grant Symposium
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![Page 2: High Altitude Balloon Data Logger for Scientific Payloads Presented by: Dallas Hodge Spring 2014 2014 Space Grant Symposium 1.](https://reader030.fdocuments.in/reader030/viewer/2022032708/56649e585503460f94b50936/html5/thumbnails/2.jpg)
Outline
• Background motivation• Conceptual design• Detail design elements• Implementation• Flight results• Ultimate outcome
![Page 3: High Altitude Balloon Data Logger for Scientific Payloads Presented by: Dallas Hodge Spring 2014 2014 Space Grant Symposium 1.](https://reader030.fdocuments.in/reader030/viewer/2022032708/56649e585503460f94b50936/html5/thumbnails/3.jpg)
Background
• Embry-Riddle supports the Arizona Near Space Research (ANSR) organization
• Student teams routinely launch
experimental payloads
into near space
• Typical altitude
of 100,000 feet above sea
level
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Background Continued
4
Pop
Balloon burst
Parachute descent Slow ascent
Fill balloon and launch
Recovery
1
2
3
4
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Project Motivation
Need expressed for a simple kit or pre-assembled data logger which accomplishes:• Electrical/computer engineering summer camp 2013
• Introduction to applied electronics
• Simple sensor instrumentation exposure
• Reliably collect and save data to a removable memory element
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Conceptual Design
Composed of microcontroller with input signal conditioning and data storage to an SD card
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Preliminary Design
• Atmega328 microcontroller and Arduino development environment selected.
• Difference op-amp for analog signal conditioning
• Status indicator LED
• Press button for ending data saving upon payload recovery
• Minimize risk of data loss due to system upset
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Project Development
• Build a little, test a little• Subsystems were built up on a breadboard and verified:
a)Microcontroller and micro SD card interface
b)Power supply unit
c)Op-amp signal conditioning
• Circuit simulation
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Difference Amplifier
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Signal shifting and scaling from sensor input to op-amp output
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Implementation
• Compact through-hole part solution for ease of student assembly
• Instructions provide desired level of detail behind understanding the principle of operation
• Prototype tested over temperature, pressure, and time
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Usage
• Data loggers initially developed for summer camp
• Data loggers are now an education outreach program feature where surrounding schools learn about the device and fly with ANSR
• Original design intent of providing practical electronics exposure to high school and middle school students
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Flight Results
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0.00220.16110.32000.47890.63780.79670.95561.11441.27331.43221.59111.75001.90892.06782.22672.38562.54442.70330
20,000
40,000
60,000
80,000
100,000
120,000
Altitude Flight Profile
Time (Hrs)
Alti
tude
(ft)
Max Altitude: 98,633 ft
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Flight Results
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0.0022
0.1061
0.2100
0.3139
0.4178
0.5217
0.6256
0.7294
0.8333
0.9372
1.0411
1.1450
1.2489
1.3528
1.4567
1.5606
1.6644
1.7683
1.8722
1.9761
2.0800
2.1839
2.2878
2.3917
2.4956
2.5994
2.7033
-50.0
-40.0
-30.0
-20.0
-10.0
0.0
10.0
20.0
30.0
External Temperature (Celsius)
Time (Hrs)
Tem
pera
ture
(C)
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Project Outcomes
• Embry-Riddle continues to support STEM outreach by offering the use of the data logger
• Practical electronics design work including:
• System engineering
• Product development management
• Printed circuit board layout skills
• Laboratory testing, troubleshooting, and documentation
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Questions
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