INAIGEM

Permanent URI for this communityhttps://hdl.handle.net/20.500.14982/4

Browse

Search Results

Now showing 1 - 5 of 5

Some of the metrics are blocked by your
consent settings
Datalogger for Low-Cost High Mountain Weather Stations: Design, Optimization and Testing of Power Consumption and Compatibility with Satellite Transmitter
(Institute of Electrical and Electronics Engineers Inc., 2023)
Alvarado Lugo, Robert A.
;
Lovon Ramos, Percy W.
;
Lujan Leon, Jean
This paper presents the design, optimization, andlaboratory testing of a low-cost Datalogger for meteorologicalstations in high mountain environments. The lack of meteorolog-ical data in the high Andean basins hinders natural resourcemanagement and disaster prevention, so Low-Cost WeatherStations are presented as efﬁcient solutions to collect such dataand meet the demand for research in these areas. The Dataloggerwas developed to capture, store, and transmit meteorologicaldata, while also addressing the challenges of operating in remoteand harsh conditions. The study focused on integrating essentialfunctionalities, such as data transmission, with a strong emphasison satellite communication for global coverage. The optimizationprocess involved state-of-the-art review, careful selection andplacement of components, PCB design, impedance control, andenergy consumption considerations. Two versions of the Datalog-ger were fabricated and subjected to laboratory testing to assesstheir performance and reliability. The results showed that bothversions exhibited satisfactory responses in terms of data acquisi-tion, communication interfaces, and sensor integration. Overall,the Datalogger demonstrated promising results, showcasing itspotential for scientiﬁc research and environmental monitoringin challenging high mountain environments. Future work willinvolve ﬁeld testing to validate its performance under real-worldconditions and further reﬁne the design for optimal functionality
Some of the metrics are blocked by your
consent settings
Design of unmanned surface vehicle (USV) for bathymetry in glacial lakes
(Institute of Electrical and Electronics Engineers Inc., 2023)
Lujan Leon, Jean
This paper presents the design and development of an Autonomous Surface Vehicle (USV) to perform bathymetry surveys in glacial lakes. Accurate depth measurement in these environments is essential for evaluation of the volume of the lakes and analysis of potential flooding hazard. The developed USV, called "Calle-Calle" is equipped with sonar to autonomously collect depth data. The mechanical and electronic design of the USV is described addressing aspects such as buoyancy, manual control, automatic control and sonar integration. Manual control tests revealed the integration between the radio control and the Pixhawk flight controller, while automatic control tests revealed improvements in the accuracy of tracking programmed routes. Successful sonar integration allowed depth measurements in rivers such as the Calle - Calle and Cau-Cau (Valdivia - Chile). The USV featured an operational autonomy of 30 to 45 minutes and reliable telemetry coverage, enabling autonomous operations. In addition, opportunities for future work are discussed, including improvements in automatic control accuracy and exploration of new tasks and sensors.
Some of the metrics are blocked by your
consent settings
Arduino data loggers: A helping hand in physical geography
(John Wiley and Sons Inc, 2023)
Lujan Leon, Jean
;
Medina Marcos, Katy
;
Tapia Ormeño, Pedro
Microcontrollers such as Arduino have been increasingly used by researchers to create and customise their own tools. In geography, microcontrollers are frequently used to design data loggers for monitoring purposes. We reviewed the use of Arduino in physical geography to unravel the opportunities and challenges of using off-the-shelf tools in research. We conducted a literature review, putting the retrieved information in perspective with our experimental work in mountainous and riverine landscapes in Chile and Peru. We show that the low cost and versatility of Do It Yourself (DIY) data loggers open research opportunities, extending the range of application of their expensive commercial counterparts. The possibility of connecting Arduino to a wide range of sensors, actuators, and wireless communication devices has helped to monitor rivers, glaciers, lakes, ice-waves, caves, and landslides, improving the temporal and spatial resolution of data collected in critical environments. Low-cost sensors have been extensively compared against expensive alternatives with good results, although they require thorough testing before field deployment due to the common existence of defective equipment. Building research equipment has several challenges. DIY data loggers might not be unconditionally accepted by environmental agencies, partially restricting their use to educational and research purposes. Failures in data loggers can be difficult to track, since they might be related to coding, electronic assemblage, or inadequate housing to withstand outdoor use. Yet, Arduino-based data loggers have helped scientists around the world in different stages of their career, especially in scarcely funded research endeavours. Arduino has boosted creativity and resourcefulness, paving the way for innovative monitoring strategies in physical geography.
Some of the metrics are blocked by your
consent settings
Low power datalogger for hydrometeorological variables in high mountain based on ESP32, LDO with low quiescent current and P-channel MOSFET
(Institute of Electrical and Electronics Engineers Inc., 2024)
Alvarado Lugo, Robert A.
;
Cardenas Campana, Jessenia
;
Coaguila Agurto, Susan
;
Lujan Leon, Jean
;
Torres Obando, Luis
The monitoring of hydrometeorological variables inhigh mountain regions is crucial for understanding the impactsof climate change and managing water resources. This studypresents the development of a low power datalogger designed forlong-term deployment in remote, high-altitude environments. Thedatalogger integrates a ESP32, a low dropout regulator (LDO)with low quiescent current and a P-channel MOSFET to optimizeenergy consumption, achieving an autonomy of approximately 15months with a 18650 battery (1800 mAh). The device supportsvarious communication protocols to measure key hydrometeo-rological parameters such as wind speed and direction, solarradiation, surface temperature, and atmospheric pressure andhumidity. Field tests demonstrated consistent performance, witha power consumption of 14 µA in deep sleep mode. This designensures reliable data collection with minimal maintenance, mak-ing it a valuable tool for environmental monitoring in challenginghigh mountain conditions.
Some of the metrics are blocked by your
consent settings
Performance Comparison of AWS IoT Connected Dataloggers in Glacier Environments: Campbell CR1000X vs. ESP32 Open Source
(Institute of Electrical and Electronics Engineers Inc., 2024)
Alvarado Lugo, Robert A.
;
Cardenas Campana, Jessenia
;
Coaguila Agurto, Susan
;
Lovon Ramos, Percy W.
;
Lujan Leon, Jean
Monitoring hydrometeorological conditions in highmountain areas is crucial for understanding and mitigating theimpacts of climate change. This study addresses the developmentand implementation of both commercial and open-source data-loggers for weather monitoring in these environments. Througha review of the hardware and software used, we present thetools employed in the development of the study, along with thenetwork infrastructure that connects the city of Huaraz withLake Palcacocha, enabling internet access, as well as the IoTnetwork design for each datalogger. The commercial dataloggerwas conﬁgured according to the manufacturer’s guidelines, es-tablishing secure MQTT communication with AWS IoT Core.On the other hand, the open-source datalogger required thedevelopment of custom scripts in the Arduino IDE, incorporatingWiFi and MQTT libraries, and overcoming challenges relatedto network reconnection and data integrity. Field experimentsdemonstrated high data transmission efﬁciency (commercial:99.68%, open-source: 99.69%). Although the open-source data-logger required code tuning to achieve performance comparableto the commercial version, it proved viable as an open-sourcesolution for high-altitude monitoring. Compatibility with AWSIoT Core enabled real-time data visualization, storage, andenhanced responsiveness to extreme weather events.Keywords—ESP32 Datalogger, AWS IoT Core, MQTT Proto-col, High Mountain, Climate Surveillanc

INAIGEM

Browse

Filters

Settings

Sort By

Results per page

Search Results