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The paper summarizes basic rules in the design of simple, low cost sensors based on chaotic dynamics, moreover to analyze the influence of the window comparators on the accuracy and precision of these sensors. We show that the comparator blocks in the circuit for determining the time-in-window parameters can be a significant source of errors that can be easily overlooked. A new version of chaotic...
Several simple circuits with rather complex nonlinearities are presented, essentially based on diodes and varistors. These circuits are believed to extend the family of chaotic circuits based on diodes, as illustrated by the literature. Potential applications to chaotic sensors are briefly discussed.
Nonlinear systems able to develop chaotic dynamics have a tremendous potential in a large class of applications, because of the complexity of the behavior they exhibit and of the sensitivity of their operation to the process parameters. While these properties have been seen as disadvantages, the increased technical capabilities of mastering the operation of these systems and of analyzing their behavior...
We are concerned with the reliability of ultrasound location through beams reflected or propagating along the line of sight in fire conditions. For this purpose, we experimentally investigate the propagation of ultrasounds under hot air and fire environment, in a laboratory setting, in view of assessing the reliability of ultrasound-based safety devices and equipment for use in fire combat, and the...
The high reactivity of the chaotic systems with respect to circuit parameters makes these systems suitable for high sensitivity sensors for various physical parameters such as light intensity, temperature, or humidity. The purpose of this paper is to improve former results and bring new technological advancement to the sensors based on chaotic systems, specifically to optic sensors.
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