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Proceedings Article

Inspection and analysis of the walls of fluid filled tubes by active electrolocation: a biomimetic approach

[+] Author Affiliations
Martin Gottwald, Kavita Mayekar, Vladislav Reiswich, Michael G. Metzen, Gerhard von der Emde

Univ. Bonn (Germany)

Herbert Bousack, Deepak Damalla, Shubham Biswas

Forschungszentrum Jülich (Germany)

Proc. SPIE 7975, Bioinspiration, Biomimetics, and Bioreplication, 797510 (March 23, 2011); doi:10.1117/12.877763
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From Conference Volume 7975

  • Bioinspiration, Biomimetics, and Bioreplication
  • Raúl J. Martín-Palma; Akhlesh Lakhtakia
  • San Diego, California, USA | March 06, 2011

abstract

During their nocturnal activity period, weakly electric fish employ a process called "active electrolocation" for navigation and object detection. They discharge an electric organ in their tail, which emits electrical current pulses, called electric organ discharges (EOD). Local EODs are sensed by arrays of electroreceptors in the fish's skin, which respond to modulations of the signal caused by nearby objects. Fish thus gain information about the size, shape, complex impedance and distance of objects. Inspired by these remarkable capabilities, we have designed technical sensor systems which employ active electrolocation to detect and analyse the walls of small, fluid filled pipes. Our sensor systems emit pulsed electrical signals into the conducting medium and simultaneously sense local current densities with an array of electrodes. Sensors can be designed which (i) analyse the tube wall, (ii) detect and localize material faults, (iii) identify wall inclusions or objects blocking the tube (iv) and find leakages. Here, we present first experiments and FEM simulations on the optimal sensor arrangement for different types of sensor systems and different types of tubes. In addition, different methods for sensor read-out and signal processing are compared. Our biomimetic sensor systems promise to be relatively insensitive to environmental disturbances such as heat, pressure, turbidity or muddiness. They could be used in a wide range of tubes and pipes including water pipes, hydraulic systems, and biological systems. Medical applications include catheter based sensors which inspect blood vessels, urethras and similar ducts in the human body.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Martin Gottwald ; Kavita Mayekar ; Vladislav Reiswich ; Herbert Bousack ; Deepak Damalla, et al.
"Inspection and analysis of the walls of fluid filled tubes by active electrolocation: a biomimetic approach", Proc. SPIE 7975, Bioinspiration, Biomimetics, and Bioreplication, 797510 (March 23, 2011); doi:10.1117/12.877763; http://dx.doi.org/10.1117/12.877763


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