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High Altitude Balloon Instrumentation Platform Data Acquisition & Control System
Design Review: Week 3
Sydney Kaminski Chris Schwab Lincoln Glauser Steven Giewont
Project Manager Lead Hardware Engineer Lead Embedded Engineer Lead Controls Engineer
Overview● Background Information● Problem Statement● Key Stakeholders● Project Goals & Key Deliverables● Use Scenarios● Constraints● Customer Requirements● Engineering Requirements● House of Quality● Gantt Chart● Future Plans
Background Information
● Space Exploration Team (SPEX)● Microsystems Engineering and Technology
for the Exploration of Outer Space Regions (METEOR)
● Past previous METEOR MSD groups: P04036, P05005, P06005, P07103, P08101
● Past projects ran into problems with sensors & spinning of the instrumentation platform.
Problem Statement
The goal of this project is to create an instrumentation platform capable of sustaining high altitude environments and capturing/storing sensor data for transmission. Captured data includes temperature, pressure, inertial measurements, and digital images. Select sensor data will be overlaid on the captured video stream and sent to the communications subsystem for transmission to a ground station. Captured sensor data will also be stored to an SD card and packaged for transmission. A reaction wheel assembly will be designed and implemented to stabilize the instrumentation platform in one axis. The resulting design must be fully functional in conjunction with HABIP-COMMS, while operating nominally up to 120,000 feet elevation for at least 3 hours. The design must weigh less than 2 pounds and the ground recovery signaling system (GRSS) must be operational for 24 hours after launch.
Key Stakeholders
Key Stakeholders
1 MSD Team P17105, HABIP-DAQCS
2 MSD Team P17104, HABIP-COMMS
3 Dr. Dorin Patru
4 RIT's Space Exploration Team (SPEX)
5 Rochester Institute of Technology
6 Boeing
Projects Goals & Key Deliverables● Design, test, and prototype the HABIP-DAQCS instrumentation platform.
1. Successfully launch high altitude balloon and instrumentation platform.2. GRSS activates and enables users to find the instrumentation platform after landing.3. Measure and collect accurate sensor data throughout entirety of flight.4. Stabilize one axis of the instrumentation platform.
● Document the design and testing process for the instrumentation platform.1. PCB Schematics, Gerbers, and BOM2. CAD 3D Models and Simulations3. Firmware Source Code and Documentation4. Detailed test plan for all system components5. Detailed drawings of designs to be machined6. MATLAB and Simulink models of control algorithm
● ImagineRIT Presentation
Use Scenario
Constraints
● The weight of the DAQCS portion of the instrument platform is within the limit of 2 pounds.
● The instrumentation platform is built within the price limit of $1500.● The instrumentation platform complies with all FAA regulations specified
for unmanned balloons (Title 14, Chapter 1, Subchapter F, Part 101, Subpart A & D).
Customer RequirementsCustomer Requirements: P17105 HABIP-DAQCS
Customer Requirement
NumberCategory Importance Description
CR1 Usability Important Collected sensor data is packaged in an organized manner to be sent to HABIP-COMMS.
CR2 Capability Important The instrumentation platform controls the stability of the high altitude balloon around one axis.
CR3 Capability Critical The ground recovery signaling system (GRSS) makes the high altitude balloon visible/audible to the user during recovery
CR4 Capability Desirable The instrumentation platform is able to withstand a fall from a tree.
CR5 Capability Critical The instrumentation platform is able to withstand free-fall to the ground with parachute.
CR6 Capability Important Each camera video is stored to individual SD card.
CR7 Capability Important The instrumentation platform is able to measure linear and angular motion at all altitudes of flight.
CR8 Capability Critical The instrumentation platform functions for entirety of flight.
CR9 Capability Critical The ground recovery signaling system (GRSS) functions for entirety of flight.
CR10 Safety Critical All equipment meets safety protocols/standards to avoid injuries.
CR11 Capability Important The instrumentation platform acquires and stores sensor data to a local SD card.
CR12 Resources Desirable A minimum of six cameras to capture video.
CR13 Capability Important The weight of the components within the instrumentation platform is distributed evenly radially.
CR14 Capability Critical The instrumentation platform withstands the radiation at all altitudes that it reaches in flight.
CR15 Capability Critical The instrumentation platform withstands the temperatures at all altitudes that it reaches in flight.
CR16 Capability Critical The instrumentation platform withstands the pressures at all altitudes that it reaches in flight.
CR17 Usability Desirable The wires for the instrumentation platform are managed and organized well.
CR18 Safety Critical The instrumentation platform follows all FAA regulations.
CR19 Usability Desirable Implement component commonality / reusability across the design.
Engineering Requirements
Engineering RequirementsEngineering Requirements: P17105 HABIP-DAQCS
Engineering Requirements
Number
Customer Requirements
SourceCategory Engineering Requirement Units of
MeasureMarginal
ValueIdeal Value Testing/Verification
ER1 CR1Systems
OperationTransmit Data and telemetry to
COMMSTransmission/Min 1 15
Set up subsystems with both DAQCS and COMMS teams.
Ensure that data is transmitted.
ER2 CR2System
OperationStabilize angular movement of
instrument platform.Radians/Sec 1 0
Hang instrumentation platform and spin. Measure angular movement/displacement
throughout time and how far the platform is from the initial
position.
ER3 CR2System
OperationMeasure angular posiiton from
IMU.Radians 1 0
Measure angular position with both IMU and another sensor on order to ensure that both
measurements match.
ER4 CR2System
Operation
Use motor speed and duration to compensate for platform's
angular position.- - -
Hang instrumentation platform and spin. Measure angular movement/displacement
throughout time and how far the platform is from the initial
position.
Engineering Requirements
Engineering Requirements: P17105 HABIP-DAQCSEngineering
Requirements Number
Customer Requirements
SourceCategory Engineering Requirement Units of Measure Marginal
ValueIdeal Value Testing/Verification
ER5 CR2System
OperationReturns to initial position within an
angular rate.Radians/Sec 1.5* 1.5*
Hang instrumentation platform and spin. Measure the average rate that it takes to return the
instrumentation platform to initial position.
ER6 CR3 System SafetyMeasures brightness/flashes of
LEDs placed around perimeter of platform during flight.
Lumens 75 100Measure brightness in a
controlled environment with a photometer.
ER7 CR3 System Safety Measure buzzers' audible noise. Decibel 30 36Measure distance buzzer can be
heard
ER8 CR4System Safety
/ System Longevity
Withstands falls without parachute of 50 feet to simulate fall from a
tree.Force 41.5* 100*
Build a prototype of the system with internal sensors to capture
data of fall.
Engineering RequirementsEngineering Requirements: P17105 HABIP-DAQCS
Engineering Requirements
Number
Customer Requirements
SourceCategory Engineering Requirement Units of Measure Marginal
ValueIdeal Value Testing/Verification
ER9 CR5System
RobustnessImpacts with parachute results in
minimal damage to platform.Force [N] 41.5* 100*
Build a prototype of the system with internal sensors to capture
data of fall.
ER10 CR6System
OperationStore VGA Quality video to
individual SD CardsMbs/s 2 4
Write firmware for video acquision and store captured
data to a SD card.
ER11 CR7System
Operation
Measures relative position and movement through IMUs,
gyroscopes, and accelerometers.Radians/Sec 1.5* 1.5*
Hang instrumentation platform and spin. Measure angular
movement/displacement with several other sensors to ensure
measurements are correct.
ER12 CR8System
LongevityEnsure battery's/power systems'
lives.Hours 3 5
Cycle through environmental profiles for an extended period
of time to simulate true environments that it will be
undergoing. Time how long the batteries last.
Engineering Requirements
Engineering Requirements: P17105 HABIP-DAQCSEngineering
Requirements Number
Customer Requirements
SourceCategory Engineering Requirement Units of Measure Marginal
ValueIdeal Value Testing/Verification
ER13 CR9 System SafetyFunctions of GRSS lasts for a long
period of time to allow for easier finding.
Hours 24 48
Cycle through environmental profiles for an extended period
of time to simulate true environments that it will be
undergoing. Time how long the GRSS lasts.
ER14 CR11System
OperationSensor acquisition rate (for non-video/camera sensors)
Captures/Sec 1 1Write firmware for sensor
acquisition and store captured data to a SD card.
ER15 CR10 System SafetyEnsure safe voltage and current
levelsVoltage/Current 12V/6A 24V/8A
Ensure all components operate in safe electrical constraints
ER16 CR10 System SafetyEnsure reaction wheel motor operates safely and ability to
E-Stop.Seconds 1 0.1
Test time to safely stop and cut power from reaction wheel
motor
Engineering Requirements
Engineering Requirements: P17105 HABIP-DAQCSEngineering
Requirements Number
Customer Requirements
SourceCategory Engineering Requirement Units of Measure Marginal
ValueIdeal Value Testing/Verification
ER17 CR12System
OperationAll six system cameras capture
VGA quality data.Resolution
(pixels)640x480 640x480
Capture video. Then open it up on a computer.
ER18 CR13System
RobustnessWeight of payload must be evenly
distributedCenter of Gravity (inch off center)
1 0.25Use CAD and balance to
ensure that the center of gravity is within the tolerance allowed.
ER19 CR14System
OperationSystem microcontrollers will use
FRAM cells.- - - N/A
ER20 CR15System
Operation
All electrical components comply with industrial temperature
ranges.Celcius -40/85 -40/85
Cycle through environmental profiles for an extended period
of time to simulate true environments that it will be
undergoing. Ensure that they measure accurately.
Engineering RequirementsEngineering Requirements: P17105 HABIP-DAQCS
Engineering Requirements
Number
Customer Requirements
SourceCategory Engineering Requirement Units of Measure Marginal
ValueIdeal Value Testing/Verification
ER21 CR 8/9/15/16/19System
Operation
All fabricated PCBs will be coated in a conformal coating to mitigate
moisture invasion.- - -
Cycle through environmental profiles for an extended period of
time to simulate true environments that it will be undergoing. Ensure
that they measure accurately.
ER22 CR16System
OperationPressure sensor operates within
targeted altitude constraintsAltitude (feet) 109,000 120,000
Cycle through environmental profiles for an extended period of
time to simulate true environments that it will be undergoing. Ensure
that they measure accurately.
ER23 CR16System
OperationPressure sensor operates within
temperature constraintsTemperature
(Celcius)-40/85 -40/85
Cycle through environmental profiles for an extended period of
time to simulate true environments that it will be undergoing. Ensure
that they measure accurately.
ER24 CR17System Usability
Organize wires to allow for optimal spacing and easy replacement of
internal components.- - -
All components should fit within the instrumentation platform.
Engineering Requirements
Engineering Requirements: P17105 HABIP-DAQCSEngineering
Requirements Number
Customer Requirements
SourceCategory Engineering Requirement Units of Measure Marginal
ValueIdeal Value Testing/Verification
ER25 CR18 System SafetyWeighs within the limit specified
by the FAA regulations.Pounds 3 2
Weigh entire DAQCS instrumentation platform
components.
ER26 CR19System
RobustnessModular system design, easy to
replace failed components.- - - -
House of Quality
House of Quality
House of Quality
House of Quality
House of Quality
Risks
Risks
Gantt Chart: Plans for Next Phase
1. Research
2. Initial Design
3. Part Selection
4. Design Refinement and test
Gantt Chart: Plans for Next Phase
High Level Designs
School Resources
Materials & Flight Conditions
Reaction Wheel Research
Sensors Research
Power and Weight
Estimates
Future Plans
● Research and benchmark similar high altitude balloon instrumentation platform designs
● Create a functional decomposition of the entire instrumentation platform● Benchmark reaction wheel assemblies● Create a system architecture plan/design
Questions?
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