Mini-UAV Based Sensory System for Measuring Environmental Variables in Greenhouses

Roldán, Juan Jesús; Joossen, Guillaume; Sanz, David; Cerro, Jaime del; Barrientos, Antonio

doi:10.3390/s150203334

Cited by 149 publications

(153 citation statements)

References 31 publications

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“…The impact of rotor turbulence with respect to detecting trace gas concentrations with sensors onboard UASs is relatively unexplored. A handful of publications present some computational fluid dynamic (CFD) analysis in a general context of mapping quadrotor downwash [29][30][31], but there are limited publications that include a CFD analysis for sensor placement [32]. Furthermore, the computational resources are not currently available to run detailed simulations that include the effect on local gas concentrations, thus the analysis of how gas concentrations are affected by UAS rotor turbulence is still something that needs to be studied.…”

Section: Sensors For Trace Gasesmentioning

confidence: 99%

Unmanned Aerial Systems for Monitoring Trace Tropospheric Gases

Schuyler

Guzmán

2017

Atmosphere

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Abstract:The emission of greenhouse gases (GHGs) has changed the composition of the atmosphere during the Anthropocene. Accurately documenting the sources and magnitude of GHGs emission is an important undertaking for discriminating the contributions of different processes to radiative forcing. Currently there is no mobile platform that is able to quantify trace gases at altitudes <100 m above ground level that can achieve spatiotemporal resolution on the order of meters and seconds. Unmanned aerial systems (UASs) can be deployed on-site in minutes and can support the payloads necessary to quantify trace gases. Therefore, current efforts combine the use of UASs available on the civilian market with inexpensively designed analytical systems for monitoring atmospheric trace gases. In this context, this perspective introduces the most relevant classes of UASs available and evaluates their suitability to operate three kinds of detectors for atmospheric trace gases. The three subsets of UASs discussed are: (1) micro aerial vehicles (MAVs); (2) vertical take-off and landing (VTOL); and, (3) low-altitude short endurance (LASE) systems. The trace gas detectors evaluated are first the vertical cavity surface emitting laser (VCSEL), which is an infrared laser-absorption technique; second two types of metal-oxide semiconductor sensors; and, third a modified catalytic type sensor. UASs with wingspans under 3 m that can carry up to 5 kg a few hundred meters high for at least 30 min provide the best cost and convenience compromise for sensors deployment. Future efforts should be focused on the calibration and validation of lightweight analytical systems mounted on UASs for quantifying trace atmospheric gases. In conclusion, UASs offer new and exciting opportunities to study atmospheric composition and its effect on weather patterns and climate change.

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Section: Sensors For Trace Gasesmentioning

confidence: 99%

Unmanned Aerial Systems for Monitoring Trace Tropospheric Gases

Schuyler

Guzmán

2017

Atmosphere

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“…3.2), close to the center of the copter. The sampled air volume can be assumed to originate from within a radius of a few meters around the inlet (see e.g., Roldan et al, 2015;Alvarado et al, 2017;Palomaki et al, 2017), which represents homogeneous plume gas for a widely spread out plume. This assumption is confirmed by a self-developed method for the estimation of the origin of sample air, which is described in the Supplement (Sect.…”

Section: Unmanned Aerial Vehiclementioning

confidence: 99%

Implementation of electrochemical, optical and denuder-based sensors and sampling techniques on UAV for volcanic gas measurements: examples from Masaya, Turrialba and Stromboli volcanoes

Rüdiger

Tirpitz

Moor³

et al. 2018

Atmos. Meas. Tech.

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Abstract. Volcanoes are a natural source of several reactive gases (e.g., sulfur and halogen containing species) and nonreactive gases (e.g., carbon dioxide) to the atmosphere. The relative abundance of carbon and sulfur in volcanic gas as well as the total sulfur dioxide emission rate from a volcanic vent are established parameters in current volcanomonitoring strategies, and they oftentimes allow insights into subsurface processes. However, chemical reactions involving halogens are thought to have local to regional impact on the atmospheric chemistry around passively degassing volcanoes. In this study we demonstrate the successful deployment of a multirotor UAV (quadcopter) system with custom-made lightweight payloads for the compositional analysis and gas flux estimation of volcanic plumes. The various applications and their potential are presented and discussed in example studies at three volcanoes encompassing flight heights of 450 to 3300 m and various states of volcanic activity. Field applications were performed at Stromboli volcano (Italy), Turrialba volcano (Costa Rica) and Masaya volcano (Nicaragua). Two in situ gas-measuring systems adapted for autonomous airborne measurements, based on electrochemical and optical detection principles, as well as an airborne sampling unit, are introduced. We show volcanic gas composition results including abundances of CO 2 , SO 2 and halogen species. The new instrumental setups were compared with established instruments during ground-based measurements at Masaya volcano, which resulted in CO 2 / SO 2 ratios of 3.6 ± 0.4. For total SO 2 flux estimations a small differential optical absorption spectroscopy (DOAS) system measured SO 2 column amounts on transversal flights below the plume at Turrialba volcano, giving 1776 ± 1108 T d −1 and 1616 ± 1007 T d −1 of SO 2 during two traverses. At Stromboli volcano, elevated CO 2 / SO 2 ratios were observed at spatial and temporal proximity to explosions by airborne in situ measurements. Reactive bromine to sulfur ratios of 0.19 × 10 −4 to 9.8 × 10 −4 were measured in situ in the plume of Stromboli volcano, downwind of the vent.

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“…al. present another similar work in [21]. They present the design, construction, and validation of greenhouse gas monitoring system.…”

Section: Related Workmentioning

confidence: 98%

Unmanned Aerial Vehicular System for Greenhouse Gas Measurement and Automatic Landing

Ali¹,

Odeh²,

Odeh³

et al. 2018

NPA

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This paper presents a reliable and low cost greenhouse gas measurement system. The system mainly consists of an unmanned aerial vehicle (UAV), a set of calibrated sensors, a wireless system, and a microcontroller. The system can measure the concentration of greenhouse gases namely carbon dioxide (CO 2 ), methane (CH 4 ), and ozone (O 3 ) at different altitudes. It can also measure temperature, humidity, and atmospheric pressure. The system is able to send data to a remote monitoring station. The UAV is equipped with image processing based navigation and landing system so that it can land autonomously on a designated place. To ensure safe landing the system uses a specially designed parachute. This paper also presents some data generated by the system.

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Mini-UAV Based Sensory System for Measuring Environmental Variables in Greenhouses

Cited by 149 publications

References 31 publications

Unmanned Aerial Systems for Monitoring Trace Tropospheric Gases

Unmanned Aerial Systems for Monitoring Trace Tropospheric Gases

Implementation of electrochemical, optical and denuder-based sensors and sampling techniques on UAV for volcanic gas measurements: examples from Masaya, Turrialba and Stromboli volcanoes

Unmanned Aerial Vehicular System for Greenhouse Gas Measurement and Automatic Landing

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