A low-power data acquisition system for geomagnetic observatories and variometer stations

Morschhauser, A.; Haseloff, Jürgen; Bronkalla, Oliver; Müller-Brettschneider, Carsten; Matzka, Jürgen

doi:10.5194/gi-6-345-2017

Cited by 2 publications

(2 citation statements)

References 19 publications

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“…i. the ISCO 3700 manufactured by Teledyne and (ii) the PASS (Huon et al, 2017;M-Tropics, 2017) developed by IRD (Institut de Recherche pour le Développement) for low-cost applications with an adaptable number and volume of sampling bottles. As shown in Fig.…”

Section: Automatic River Water Samplersmentioning

confidence: 99%

An autonomous low-power instrument platform for monitoring water and solid discharges in mesoscale rivers

Nord

Michielin

Biron

et al. 2020

Geosci. Instrum. Method. Data Syst.

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Abstract. We present the development of the River Platform for Monitoring Erosion (RIPLE) designed for monitoring at high temporal frequency (∼10 min) of water discharge, solid fluxes (bedload and suspended load) and properties of fine particles (settling velocity) in mesoscale rivers, i.e. which drain mesoscale catchments (≈10–103 km2). This platform responds to a request to continuously measure these variables in rivers using a single, centralized device, and to do this in the most direct way possible. The platform integrates the following instruments: (i) for water discharge, water level radar, and surface velocity radar, digital cameras and an echo sounder; (ii) for fine sediment load, turbidimeters and automatic samplers including the SCAF (a sediment settling velocity characterization device); (iii) for bedload, a hydrophone; and (iv) for water quality, a conductivity probe and water sampling. As far as water discharge monitoring is concerned, priority has been given to non-intrusive instruments to improve the robustness of the system. All the instruments are driven by a data logger (Campbell® CR6), which locally stores the data and then uploads them to a remote server every hour during the day using a 3G modem. SMS (Short Message Service) alerts can be sent depending on scheduled conditions (e.g. low battery voltage, water level threshold, all samples of the automatic sampler collected). The platform has been designed to be as autonomous as possible: it is powered by a battery that is supplied by a solar panel. Limiting the power consumption of the platform was one of the main technical challenges because of the quantity of instruments integrated. A simple 100 W solar panel is sufficient to power the entire platform, even during winter or low insulation conditions. A user-friendly interface has been developed, enabling to visualize the data collected by the platform from an internet connection. It is also possible to remotely configure the platform within this interface, e.g. to modify water sampling thresholds or alert thresholds. Finally, the platform is relatively easy to move from one site to another, because its installation requires little civil engineering. To date, RIPLE has been tested on two rivers of the Alps in France: the Romanche river in Bourg d'Oisans from September 2016 to July 2018 and the Galabre river in La Robine sur Galabre since October 2018, demonstrating the proper functioning of the platform.

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Section: Automatic River Water Samplersmentioning

confidence: 99%

An autonomous low-power instrument platform for monitoring water and solid discharges in mesoscale rivers

Nord

Michielin

Biron

et al. 2020

Geosci. Instrum. Method. Data Syst.

View full text Add to dashboard Cite

show abstract

“…The availability of power, continuous data transmission and possible remote configuration remains a challenge in these environments. There have been studies that have developed autonomous monitoring platforms in hostile environments to remain unattended for several months or years (Musko et al, 2009;Bhatti and Ridley, 2014;Clauer et al, 2014;Peters et al, 2014;Morschhauser et al, 2017) but little or no for monitoring of water and solid (both fine and coarse particles) discharges in rivers (Mueller et al, 2013;Navratil et al, 2011;Comiti et al, 2014;Griffiths et al, 2014). This study presents the development of a multi-instrumental platform called RIPLE (River Platform for monitoring Erosion).…”

Section: Introductionmentioning

confidence: 99%

An autonomous and low-power instrument platform for monitoring water and solid discharges in mesoscale rivers

Nord¹,

Michielin²,

Biron³

et al. 2019

Preprint

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Abstract. We present the development of the RIPLE platform designed for the monitoring at high temporal frequency (~ 10 min) of water discharge, solid fluxes (bedload and suspended load) and properties of fine particles (settling velocity) in mesoscale rivers. This platform responds to a request to continuously measure these variables in rivers using a single, centralized device, and in the most direct way possible. The platform integrates the following instruments: (i) for water discharge: water level and surface velocity radars, digital cameras, echo-sounder; (ii) for fine sediment load: turbidimeters, automatic samplers including the SCAF (sediment settling velocity characterization device), (iii) for bedload: a hydrophone, (iv) for water quality: a conductivity probe and water sampling. As far as water discharge monitoring is concerned, priority has been given to non-intrusive instruments to improve the robustness of the system. All the instruments are driven by a data logger (Campbell® CR6), which stores locally the data and then upload them to a remote server every hour during the day using a 3G modem. SMS (Short Message Service) alerts can be sent depending on scheduled conditions (e.g. low battery voltage, water level threshold, all samples of the automatic sampler collected). The platform has been designed to be as autonomous as possible: it is powered by a battery supplied by a solar panel. Limiting the power consumption of the platform was one of the main technical challenges, because of the quantity of instruments integrated. A simple 100 W solar panel is sufficient to power up the entire platform, even during winter or low insulation conditions. The RIPLE platform has been designed to facilitate its use and maintenance. A user-friendly interface has been developed enabling to visualize the data collected by the platform from an internet connection. It is also possible to remotely configure the platform within this interface, for example to modify water sampling thresholds or alert thresholds. Finally, the platform is relatively easy to move from one site to another site because its installation requires little civil engineering. To date, RIPLE has been tested on two rivers of the Alps in France: the Romanche river in Bourg d'Oisans (45.1158° N, 6.0134° E, 710 m elevation) from September, 2016 to July, 2018 and the Galabre river in La Robine sur Galabre (44.1586° N, 6.2360° E, 680 m elevation) since October, 2018, demonstrating the proper functioning of the platform.

show abstract

A low-power data acquisition system for geomagnetic observatories and variometer stations

Cited by 2 publications

References 19 publications

An autonomous low-power instrument platform for monitoring water and solid discharges in mesoscale rivers

An autonomous low-power instrument platform for monitoring water and solid discharges in mesoscale rivers

An autonomous and low-power instrument platform for monitoring water and solid discharges in mesoscale rivers

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