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Assessment of Fluorescent Particles for Surface Flow Analysis
Department of Mechanical and Aerospace Engineering, Polytechnic Institute of New York University, Brooklyn, NY 11201, USA
Dipartimento di Ingegneria Civile, Edile e Ambientale, Sapienza University of Rome, Rome 00184, Italy
Honors Center of Italian Universities, Sapienza University of Rome, Rome 00184, Italy
Dipartimento per l'Innovazione nei Sistemi Biologici, Agroalimentari e Forestali, University of Tuscia, Viterbo 01100, Italy
* Author to whom correspondence should be addressed.
Received: 9 October 2012; in revised form: 8 November 2012 / Accepted: 12 November 2012 / Published: 14 November 2012
Abstract: In this paper, a systematic performance assessment of the measurement system for surface flow analysis developed by our group in (Tauro et al., Sensors, 2010) is presented. The system is based on the detection of buoyant fluorescent microspheres through alow-cost apparatus, which incorporates light sources to elicit fluorescence response and a digital camera to identify the particles' transit. Experiments are conducted using green fluorescent particles and further tests are executed to evaluate the system performance forred and orange particles varying in emission wavelength, degree of biocompatibility, and cost. The influence of the following parameters on surface flow sensing using fluorescent beads is investigated: (i) distance of the light sources from the water surface, (ii) presence of an ad-hoc filter tuned at the particle emission wavelength, (iii) camera resolution and frame rate, (iv) flow regime, and (v) ambient light. Experimental results are used to inform implementation guidelines for surface flow analysis in natural environments.
Keywords: fluorescent particles; hydrologic tracers; sensors technologies; surface flow; velocimetry
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MDPI and ACS Style
Tauro, F.; Mocio, G.; Rapiti, E.; Grimaldi, S.; Porfiri, M. Assessment of Fluorescent Particles for Surface Flow Analysis. Sensors 2012, 12, 15827-15840.
Tauro F, Mocio G, Rapiti E, Grimaldi S, Porfiri M. Assessment of Fluorescent Particles for Surface Flow Analysis. Sensors. 2012; 12(11):15827-15840.
Tauro, Flavia; Mocio, Gabriele; Rapiti, Emiliano; Grimaldi, Salvatore; Porfiri, Maurizio. 2012. "Assessment of Fluorescent Particles for Surface Flow Analysis." Sensors 12, no. 11: 15827-15840.