AIAA Telemetry/Electronics Award · PDF fileINA125 Instrument Amplifier 3 $7.00 ADS 1115...
Transcript of AIAA Telemetry/Electronics Award · PDF fileINA125 Instrument Amplifier 3 $7.00 ADS 1115...
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AIAA Telemetry/Electronics Award Team
Pittsburg State University 2016-2017
Image Sourceshttp://www.nasa.gov/sites/default/files/nasa-rover_logo_0.jpg
https://upload.wikimedia.org/wikipedia/commons/thumb/7/7a/AIAA_Logo_mit_Tagline.svg/2000px-AIAA_Logo_mit_Tagline.svg.png
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INTRODUCTION
Daniel MeyerCarthage, MO
Mechanical: Electromechanical
Keanan SmithEdna, KS
Mechanical: Electromechanical
Abdulaziz AlshehriSaudi Arabia
Mechanical: Design
Abdullah AlfehanSaudi Arabia
Mechanical: Design
Tim MorrisonHot Springs, AR
Mechanical: Manufacturing
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“[The award] recognizes the development and operation of the most innovative and useful real-time telemetry system at the
Rover Challenge.”
AIAA TELEMETRY / ELECTRONICS AWARD
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The telemetry system must do one of the following tasks:
Transmit real-time videoTransmit real-time sensor data
We accomplished both tasks.
AIAA TELEMETRY / ELECTRONICS AWARD
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SYSTEM OVERVIEW
Four Categories of Data Collection:•Vehicle Performance•Geolocation•Environmental•Video
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Heading, Accelerometer,
Gyro
GPSModule
Environmental Sensors
StrainGage
ESP8266
ESP8266
ESP8266
IBM Bluemix
Node-RED
StrainGage
ROVER VIEW OVERVIEW
WifiHotspot
Tachometer
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Tachometer
ON-ROVER MODULES• ESP8266 SOC modules form
the backbone of our sensor collection network
• Each ESP8266 connects directly to the base station with its own built-in Wifinetworking
Heading, Accelerometer,
Gyro
GPSModule
Environmental Sensors
StrainGageStrain
Gage
ESP8266
ESP8266
ESP8266
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Tachometer
ON-ROVER MODULES
Heading, Accelerometer,
Gyro
GPSModule
Environmental Sensors
StrainGageStrain
Gage
ESP8266
ESP8266
ESP8266
• ESP8266 modules can be added modularly as the situation requires.
• No need to build extensive wiring harnesses as an ESP can be placed physically near sensors.
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ON-ROVER MODULES
LSM9DS1 board collects:• 3-axis accelerometer• 3-axis gyroscope• 3-axis magnetometer
“9 Degrees of Freedom”
Crius NEO-6 provides GPS coordinates and altitude plus accurate timing
GPSModule
Heading, Accelerometer,
GyroESP8266
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ESP8266
ON-ROVER MODULES
BME280 measures pressure, temperature, and humidity
ML8511 returns UV Intensity (mW/cm2)
Environmental Sensors
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ON-ROVER MODULESStrainGageStrain
Gage
• Additional ESP8266 modules collect strain readings from rover frame
• A variety of strain gage models are used depending on configuration
ESP8266
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Tachometer
Heading, Accelerometer,
Gyro
GPSModule
Environmental Sensors
StrainGage
ESP8266
ESP8266
ESP8266
IBM Bluemix
Node-RED
StrainGage
ROVER VIEW OVERVIEW
WifiHotspot
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Tachometer
Heading, Accelerometer,
Gyro
GPSModule
Environmental Sensors
StrainGage
ESP8266
ESP8266
ESP8266
IBM Bluemix
Node-RED
StrainGage
ROVER VIEW OVERVIEW
WifiHotspot
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CLOUD SERVICES
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CLOUD SERVICES
• IBM Bluemix: Enterprise cloud computing platform
• “Platform As A Service”: servers for rent to run computer applications
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CLOUD SERVICES
• Node-RED: application running on Bluemix servers
• Creates web-hosted dashboard
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CLOUD SERVICES
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CLOUD SERVICES
• Cloudant NoSQL database: hosted on Bluemix servers
• Stores data recorded in races
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CLOUD SERVICES
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• Smartphone app streams directly to YouTube
•Quick and simple to start recording
•Can be viewed directly on dashboard
VIDEO STREAMING
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•3D printed from durable ABS plastic
•House and protect delicate electronics
•Clips facilitate quick swapping between rovers
• Tested tough through sand and rocks
MODULE ENCLOSURES
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TESTING
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TESTING
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REVISIONS
Original Idea Revision Advantage
High-Gain Wifi Antenna Cellular TransmissionEliminates Range and Terrain Restrictions
Local Application Hosting Bluemix Cloud ServicesAllows many simultaneous users and offloads uptime
responsibilities from us
RF Video Antenna Direct to YouTube StreamingMany simultaneous users,
Ease of distribution and recording
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Module Function Qty Unit Price TotalESP8266 Microcontroller 6 $9.00Crius GPS GPS Positioning 1 $20.009Dof Stick 9 Degrees of Freedom 1 $15.00INA125 Instrument Amplifier 3 $7.00ADS 1115 Analog-Digital Converter 4 $3.00S7V8F3 3.3V Buck-Boost Converter 6 $6.00ML8511 UV Sensor 1 $4.00BME280 Temp/Pressure/Humidity 1 $5.003.7V Lipo 720mAh Battery 6 $3.17
$54.00 $20.00 $15.00 $21.00 $12.00 $36.00
$4.00 $5.00
$19.00
$186.00
Bill of Materials
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COMPETITION DAY
Banners advertised availability of a public dashboard to view live sensor data and video
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COMPETITION DAY
• Live GPS point and history track
•Motion data
• Speed, Drivetrain RPM
• Strain Data
• Environmental
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COMPETITION DAY
•339 Weekend Page Views
•122 Unique Users
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COMPETITION DAY
Private Control Dashboard• Calibrate sensors• Activate recording• Monitor battery health• Set constants such as map
length and video links
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COMPETITION DAY
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COMPETITION DATA
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COMPETITION DATA
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COMPETITION DATA
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COMPETITION DATA
That’s good & all,But there’s a better way to represent this data…
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COMPETITION DATA –Via Google Earth
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COMPETITION DATA –Via Google Earth
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COMPETITION DATA –Viewing Data
• Each data set can be viewed individually, or overlaid with other data sets as well
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COMPETITION DATA –Viewing Data
• Specific events can be viewed right at their point on the course. Here is Acceleration in the Y-axis (Forward) at the infamous “Martian Butte”
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Questions?
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APPENDICES
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MOBILE SCIENCE PLATFORM SENSORS
Design Requirements Rationale Weighted Input
Heart RateTrack driver biometrics and use in calculating the
efficiency of the pilots' outputs2
TemperatureSimulate actual data that a mission control might
want to know
3
Barometric Pressure 3
UV Index 3
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MOTION, LOCATION, ORIENTATION
Design Requirements Nominal Input Value Tolerance Rationale Weighted Input
Rover Velocity 1 mph Resolution MINRESOLUTION
To use to determine work input and to compare rover dynamics to stress
(primarily when encountering obstacles)8
Rover Acceleration Present N/A To use for navigation and stress calculations 7
Rover Heading/Orientation +/- 30 deg MINRESOLUTION
To track rover orientation during different obstalces on the course
9
Geolocation 4m ResolutionMIN
RESOLUTION
To track rover position throughout course(4m resolution keeps us with the course width)
9
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CAPTURE RATES
Sensor Type Refresh Rate Rationale Weighted Input
High Capture Rate:Performance Data
Stress Readings 100 Hz
Faster refresh rates allow us to see any spikes that occur
7
Rover Acceleration
10 Hz
6
Drivetrain 6
Rover Angular Velocity 6
Medium Capture Rate
Rover Location
1 HzWe do not anticipate any major change events of this
data type more frequently than once per second.
6
Rover Heading 6
Heartrate 5
Slow Capture Rate:Environmental Data
UV Intensity
1 sample/minWe do not anticipate any major change events of this
data type more frequently than once per minute.
3
Temperature 3
Barometric Pressure 3
All capture rates are indicated as minimum acceptable
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GROUND STATION
Design Requirement Rationale Weighted Input
Visual Feedback to RiderFor ground crew to act as a co-driver
and provide pace notes3
Wireless Video Feed Requirement of Competition 10
GUIRaw Data is Required,
GUI to make it intelligible10
Online Dashboard for Public ViewingWould allow viewing dashboard
over internet3
Data Replay of Recorded Race DataUseful to review parametersfrom previous course runs
2
Image Sourcehttps://www.raspberrypi.org/wp-content/uploads/2015/08/raspberry-pi-logo.png
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HARDWARE
Design Requirement Nominal Input Value Tolerance Rationale Weighted Input
Max Weight5 lbs for Total
On-Rover ModulesMAX Based on previous telemetry entries 5
Battery Life 1 hour Min To survive through complete competition 7
Module EnclosuresTarget Equivalent to
IP54MIN For environment-proofing the electronics 7
Transferable Components -Swap and Set-up Time
15 min MAXAny components that are designed to be swappable
between rovers can be swapped in 15 mins2
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MECHANICAL DATA
Design Requirements Nominal Input Value Tolerance Rationale Weighted Input
Stress on components1/20th of
Material Yield ResolutionMIN
RESOLUTION
Observe stresses rover encounters throughout the course and to verify the rover design expectations
9
Drivetrain Angular Velocity Present N/A To use in calculating the work output by the pilots 9
Drivetrain Torque 5 ft∙lbs ResolutionMIN
RESOLUTION To use in calculating the work output by the pilots 9