Systems and sensors Dr. Bertrand Dano ©Altapic.com, 2014.

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Presentation transcript:

Systems and sensors Dr. Bertrand Dano ©Altapic.com, 2014

 Overview of the system Advantages of Balloons vs. Bladed-UAVS Systems and sensors  Gimbal system and controls  Sensors and applications

ALTA Flying Modes ALTA balloons can either:  Hover (single or multi tethers)  Drift

Balloon Aerodynamics  Tethered: flow laminar under the balloon.  Drifting: virtually no air flow.  Ideal to study wind and atmosphere

Quad+ Aerodynamics  Highly turbulent and re-circulating flow  Compromises air sample  Inadequate for atmospheric studies.

ALTA Gimbal System Provides: Geo-location Geo-location Image stabilization Image stabilization Image geo-referenced Image geo-referenced Stabilization is obtained using a high-performance GPS-Aided Inertial Navigation System. Advanced Kalman filtering algorithms to provide optimal estimates of position, velocity, and orientation.

ALTA Gimbal System 3-axis stabilization Pan Pan Roll Roll Pitch Pitch

ALTA Skypad Software Point and click Point and click Stare and Gaze modes Stare and Gaze modes Remotely controlled Instantly available anywhere in the world

ALTA SkyPad – Gaze mode

ALTA SkyPad – Stare mode

ALTA Cameras 5 Mpixel (visible spectrum) 5 Mpixel (visible spectrum) 5 Mpixel Near IR (Visible w/ red filter removed) 5 Mpixel Near IR (Visible w/ red filter removed) Thermal IR camera (FLIR) Thermal IR camera (FLIR) Multispectral camera (??) Multispectral camera (??)

Systems and sensors Data acquisition Onboard 8 channels ADC Onboard 8 channels ADC Geo-located (stored in image EXIF) Geo-located (stored in image EXIF) Categories Essential Essential Pollution Pollution Wind data Wind data Air content Air content Radioactivity Radioactivity …

Essential atmospheric data: Altitude Pressure Temperature Humidity IMU already provides: 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer, and a barometric pressure sensor.

Air Pollution: O 3 -Nox (MQ131) Methane (MQ-4) CO (MQ-7) … MQ series are semiconductor based sensors: Feature High sensitivity Fast response Wide detection range Stable performance and long life Simple drive circuit SO 2 NOx Urban Pollution

Gas Sensors: CO 2 (MG-811) O2 (ME3-O2) … MQ series are semiconductor based sensors: Feature High sensitivity Fast response Wide detection range Stable performance and long life Simple drive circuit O2O2 CO 2 Sea-Mangrove-Air gas exchange

Wind Data: Direction Magnitude (hot-film)

Air dust content: Particles/dust sensor (Smoke, pollen count) Radioactivity: Geiger counter 15g

Air dust content: Particles/dust sensor (Smoke, pollen count) Radioactivity: Geiger counter 15g

Questions ?

Thanks !

SO 2 NOx O2O2 CO 2 Sea-air gas exchange Urban Pollution Forest gas exchange