Biomimetic Chaotic Sensors for Water Salinity Measurements and Conductive Titrimetry

Sensors based on nonlinear dynamic systems — A survey

“…The application was described in [26][27][28]. The reason of using a chaotic sensor in this application was the need for very high sensitivity with a simple circuit (Fig.…”

“…The chaotic circuit for this application consists of only two operational amplifiers (OPAMP) and the electrolytic cell, see Fig. 7, and was detailed in [27], [28]. Figure 7.…”

“…Scheme of the chaotic circuit used in the solution conductivity measurements. From [27,28] For constant temperature of the electrolyte and precise power supply, the sensor works satisfactory in small intervals of the conductivity only using simple rectification and integration of the output #1 in Fig. 7.…”

“…salt in water. [27,28], device man-made by the second author of [27], with author's supervision and key ideas).…”

Simple nonlinear circuits and applications to chaotic sensors and chaos generators

“…The purpose of this article is to introduce simple circuits that exhibit complex nonlinear characteristics in view of their use in sensors based on the variation of the nonlinear dynamics in response to the measured parameter [1][2][3]. In essence, we suggest the use of several variations of piecewise circuits based on diodes, slightly expanding the ones in the literature, moreover, circuits based on varistors, and circuits using a combination of varistors and diodes in the feedback loops.…”