1. Flexible Impedance Sensor for In-Line Monitoring of Water and Beverages
- Author
-
G. Pani, Manuela Antonelli, L. Mezzera, M. Di Mauro, M. Tizzoni, Marco Carminati, and Andrea Turolla
- Subjects
Materials science ,Bacteria ,Lock-in ,Biofilm ,Acoustics ,010401 analytical chemistry ,Continuous monitoring ,Impedance ,02 engineering and technology ,Interdigitated electrodes ,Conductivity ,021001 nanoscience & nanotechnology ,01 natural sciences ,Temperature measurement ,Line (electrical engineering) ,0104 chemical sciences ,Water quality ,Flexible PCB ,Ionic resistivity ,Electrode ,Electronics ,Current (fluid) ,0210 nano-technology ,Electrical impedance - Abstract
A safety impedance micro-sensor based on flexible electrodes for continuous monitoring of the surface cleanness of pipes of small diameter (down to few mm) handling drinkable fluids is presented. It allows discrimination between biofilm and limescaling, grants high resolution (few µm in thickness) and enables early warning and predictive (closed-loop) maintenance. It is coupled with a temperature and fluid conductivity probes in order to calibrate for their fluctuations. The current prototypal electronics, measuring impedance in the MHz range, can be scaled towards low-cost and low-power pervasive implementations. Preliminary experimental results showing the consistence with non-curved geometries are presented.
- Published
- 2019