High Altitude Balloon Instrumentation Platform Data

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).

http://www.ecfr.gov/cgi-bin/text-idx?SID=90aa5cc5856ee5ff660fe44779eef0d6&mc=true&node=pt14.2.101&rgn=div5



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


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: P17105 HABIP-DAQCSEngineering

Requirements Number


SourceCategory Engineering Requirement Units of Measure Marginal


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.



Number




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.



Requirements Number




ER13 CR9 System SafetyFunctions of GRSS lasts for a long

period of time to allow for easier finding.

Hours 24 48



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



Requirements Number




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



undergoing. Ensure that they measure accurately.



Number




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




ER23 CR16System

OperationPressure sensor operates within

temperature constraintsTemperature

(Celcius)-40/85 -40/85




ER24 CR17System Usability

Organize wires to allow for optimal spacing and easy replacement of

internal components.- - -

All components should fit within the instrumentation platform.



Requirements Number




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?

Documents

High Altitude Balloon Instrumentation Platform Data