low cost remote sensing for precision farming using uavs · orbisat-aeroálcool sarvant. sarvant...
TRANSCRIPT
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Onofre Trindade Jr
ICMC/USP
Low Cost Remote Sensing for Precision Farming
using UAVs
João Pessoa – Abril 2015
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Summary
• Research on UAS in the ICMC-USP• The ARARA Project• Arara• INCT-SEC
• Tiriba• AP1• AP2
• Ararinha• SARVant• Tiriba MIL• Tuim & Agilis
• Precision Farming
• Structuring an UAS – A Flight Services Provider• The Payload – MOSA• The Safety Supervisor – IFA
• Success Metrics and Failure Rates• Aplying IFA2S
• Low Cost Systems
• The Good News
• Final Remarks
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Research on UAS in the ICMC-USP
ARARA
UAVs
> Aircraft
> Guidance
Defense/Safety
Agriculture
Environment
Target
ApplicationsIntermediate
ApplicationsStart
Safety Critical Systems Technology
Related Projects
Ground Control Smart SensorsCommunication
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The ARARA Project
• ARARA stands for Autonomous and Radio Assisted Reconnaissance Aircraft
• The ARARA project started in 1997 aiming at the use of unmanned aircraft for crop monitoring and the surveillance of areas under environmental stress
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The ARARA Project
• Phase 1 – Radio controlled aircraft (model airplanes). Geo-referenced images using on-board GPS. Flights under eyesight range (finished in 2000)
• Phase 2 – Custom designed aircraft. Complete on-board instrumentation. Ground control station. Instrument flights, beyond eyesight range. (finished in 2003)
• Phase 3 – Auto pilot, moving ground control station. (finished in 2006)
• Phase 4 – New hardware and software architectures, on-board image processing, new data link technology, larger autonomy
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ARARA / ARARA NG
Operating data Engine 40 55cc, 2 4T, 5HP, AVGAS
Max weight : 20Kg 16Kg
Payload: 3kg 4Kg
Flight endurance: 4h 8h
Cruise speed : 100 200km/h
Stall speed : 40 60 km/h
Autonomous or remote controlled aircraft
Emergency parachute
Electric generator/engine starter
Moving ground control station
Autonomous takeoff (on a car) and landing (on skis)
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Electric propulsion
Max takeoff weight: 4kg
Payload: 800 g
Autonomy: 45 min
Cruiser speed: 100km/h
Stoll speed: 40km/h
Autonomous or remote controlled flight
Landing – automatic parachute landing, manual belly landing
Takeoff – automatic hand launch
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INCT-Sec Autopilot
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INCT-Sec Autopilot3way redundant - SarVANT
Tree way redundancy
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Open Source
GISA &Ararinha
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Ararinha
Open aircraft design developed at GISA - Interest Group onUnmanned Aerial Systems and Applications
Goal – share knowledge on unmanned aircraft andapplications among students, industrial partners andhobbyists
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Ararinha
• Easy building• Easy to find materials• Low Cost
• Easy payload integration
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•Wing load: 47 Kg/m²•Dry Weight: 35 Kg•Maximum takeoff weight: 120 Kg•Paylod: 45 Kg•Propulsion: 2 DLE-222 - 21.5Hp´s each•Stol speed (flaps on, ISA): 72 Km/h•Cruise speed(8000 ft; ISA+10): 200 Km/h•Autonomy: 20+ Hours•Cruise range: 4000+ Km•Rate of climb: 2000 Pés/min•Takeoff and landing distance: 250 m
Orbisat-Aeroálcool SARVant
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SARVant – Main Dimensions
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SarVANTPayload Integration
SAR parts parachute Fuselage fuel
BaTtery GNS
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Electric propulsion
Max takeoff weight: 7kg
Payload: 800 g
Autonomy: 90 min
Cruiser speed: 70/100 km/h
Stoll speed: 40/55 km/h
Autonomous or remote controlled flight
Landing – automatic parachute landing,
manual belly landing
Takeoff – automatic hand launch
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Tuim/Agilis
• MTOW: 7/9 Kg
• Payload: 1,5/1.8 Kg
• Cruiser: 100Km/h
• Autonomy: • 1h @ 80Km/h
• 2.5h @ 100Km/h
• Propulsion: • Twin engine, electric
powered
• Gas – 35cc
• Takeoff/Landing: VTOL
• Emergency parachute
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Tuim/Agilis
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.
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ApplicationsAgriculture Management
Precision Agriculture
1. Data gathering
Remote sensing
Local sensing
2. Data analysis
Problem identification
Opportunities identification for better crop yields
3. Action
Raw data -> Thematic maps -> Actuation maps
Temporal resolution is important
Problem correction / opportunities exploration
Current season / future seasons
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.Classe %
Cultura 65,5
Invasoras 1,2
Palha 7,8
Solo Exposto 25,5
Soil, Straw, Weed and Crop Mapping
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.
Faults Mapping
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.
Faults Mapping
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.
Faults Mapping
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.
TreeCounting
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ApplicationsAgriculture Management
• IP addresses and the port numbers of the components.
SeedingQualityEvaluation
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UAS Components
• Ground segment• Ground Monitoring and Control Station
• Ground Payload Control Station
• Aerial segment• Aircraft
• Control avionics
• Payload
• Communications• Air-Air
• Air-Ground
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Improved System Organization
Aircraft MOSA: Mission
accomplishment
AutoPilot: Flight control Basic navigation Flight services Communication
services Position services
IFA: Ensure Safety May provide
safety-related information
IFA(IFA specific sensors
and avionics)
MOSAMission (sensors
and avionics)
AutoPilotFlight control and
navigation (sensors and avionics)
IFA (actuators for emergency procedures)
Actuators and other flight avionics
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Separating the MissionMission Oriented Sensor Array
PAYLOADMOSA
(Flight Services Client, Mission Planner and
Controller)
AIRCRAFT-IFA(Flight Services Provider)SS
I/SS
P
SSI/
SSP
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Functional Architecture of a MOSA System
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Tiriba MIL – Block Diagram
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Success Metrics
• Safety point of view – no catastrophic faults (no loss of human lives or costly installations)
• Mission point of view – full mission accomplishment
• Commercial point of view - Adequate Cost-Benefit ratio
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Failure Rates• Catastrophic failures – lead to losses of human lives
or hull loss
• Rates:• Commercial aviation – 10-6 per flight hour
• Light Civil aviation – 10-4 per flight hour
• Medium to big UAVs - 10-2 to 10-3
• Medium to big UAVs - 10-1 to 10-2
• In fact, small UAVs only last for few tens of hours…
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Cost Benefit• Light civil aviation charges around R$700 per flight
hour, including pilot, equipament, insurance, fuel, maintenance, depreciation, etc.
• A small UAV that lasts for 20 hours must cost less than:• R$20*700 (cost of 20 flight hours in a light aircraft) –
R$20*100 (operator cost) = R$12.000• To present the same cost/benefit ratio of the manned
aircraft…
• Solution• increase UAV robustness• decrease price
• Increase automation
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In the Rexcue - IFA2S System
MUX
Flight Actuators
Safety-Related
Actuators
Communication, airworthness and
environment sensing
Decision Logic & MUX Control
AP1 Data
AP2 Data
SafetyLanding
EmergencyLanding
LocationBeacoms
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Low Cost, Professional Small UAVs
Carcará 1 Ararinha Gas Agilis Gas
Availability Since 2006(Brazilian Navy)
Since 2013(Improved from a open project)
2016(VTOL capability,single or dual engine)
Wingspan 1,6m 1,9m 2,45m
Powerplant Gas, Ethanol, Methanol, Electric
Ethanol (option: Gas, Methanol, Electric)
Gas (option: Electric)
Endurance 50min 75 min 150min
Takeoff (Automatic)
Hand launching or catapult
Hand launching ortricycle
Hand launching,or VTOL
Landing (Automatic)
Deep Stall Tricycle, parachute, belly, floats or deep stall
Parachute, skis or VTOL
MTOW 1,5Kg 3,5Kg 9Kg
Payload 250gr 750gr 1800gr
Cruiser speed 45 Km/h 70 Km/h 90 Km/h
Structure materials Foam, carbon fiber Aluminum, foam, wood
Carbon/glass fiber
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Carcará 1Since 2006(Brazilian Navy)
1,6m
Gas, Ethanol, Methanol, Electric
50min
Hand launching or catapult
Deep Stall
1,5Kg
250gr
45 Km/h
Foam, carbon fiber
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Carcará 1
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Ararinha Gas
Since 2013(Improved from a open project)
1,9m
Ethanol (option: Gas, Methanol, Electric)
75 min
Hand launching ortricycle
Tricycle, parachute, belly, floats or deep stall
3,5Kg
750gr
70 Km/h
Aluminum, foam, wood
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Low Cost, Low Weight Sensors
Sensor Type Spectrum Spatialresolution
Weight Price – US$
Photographic CameraSmall
Visible - RGB 21 Mpixels 250gr 400
Photographic CameraSmall
Visible - RGB 29 Mpixels 350gr 600
Photographic CameraMedium Size
Visible - RGB 36 Mpixel 550gr 2000
Photographic CameraFull Frame - Big
Visible - RGB 51 Mpixel 1050gr 3700
Video camera RGB 4Mpixel 20gr 200
Multispectral camera R, G, NIR 3Mpixel 200gr ?
Thermal vídeo camera 8000 – 12000 um
O,25Mpixel 35gr 3000
Multispectral camera 4 to 12 bands 0,1Mpixel 500-1200gr ?
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The Good NewsSmall UAVs Price Evolution in Brasil (R$)
0
5000
10000
15000
20000
25000
30000
35000
40000
2015 2016 2017 2018 2019 2020
Minimal System Price (w/ 21Mpixel RGB Sensor)
Carcará 1 Ararinha Gas Agilis Gas
Price data sources: Carcará 1: Santos Lab – (021) 3547-8500Ararinha: MTB – (016) 3411-3410Agilis: AGX – (016) 3372-8185
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Final Remarks
• Main expertise in UAV technology
• Aircraft design
• Aircraft manufacturing
• Development of electronic control systems (hardware and software)
• UAV field operation experience
• Focus on
• Intelligent flight (IFA) controlled by intelligent sensors (MOSA)
• Quality assurance and certification
• Commercial applications, mainly in agriculture and environment monitoring
• Favorable cost/benefit ratio
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Thank you!