A review of stochastic resonance: circuits and measurement

Abstract

Abstract-Noise in dynamical systems is usually considered a nuisance. However, in certain nonlinear systems, including electronic circuits and biological sensory systems, the presence of noise can enhance the detection of weak signals. The phenomenon is termed stochastic resonance and is of great interest for electronic instrumentation.We review and investigate the stochastic resonance of several bistable circuits. A new type of S characteristic circuit is demonstrated using simple nonlinear elements with an operational amplifier. Using this circuit, the effects on stochastic resonance were determined as the slope of the S shaped characteristic curve was varied.

Ammonia quantitative analysis model based on miniaturized Al ionization gas sensor and non-linear bistable dynamic model

“…[4][5][6][7][8][9][10][11][12][13] Since the discovery of the catalytic effect of SnO2 in 1962, many studies have been conducted to improve sensor's functions. 14,15 Since proposed by Benzi in 1981 for the earth ice age disciplinarian explanation, 16 bistable dynamic model has been widely applied in fields, such as signal detection, electrical circuits, biological modeling, neural systems, et al [17][18][19][20] It is interesting that, under certain circumstances, an extra dose of noise can actually help the performance of some devices, by eliminating the internal noise in the system. When used properly, bistable dynamic model gives out an exciting improvement in coherence index.…”

On square-wave-driven stochastic resonance for energy harvesting in a bistable system

“…It has been demonstrated and considered for several fields such as signal processing, electrical circuit development and image visualization. 15,16 Ongoing work exploits stochastic resonance as a way of harvesting the energy within the random excitation, and the small-scale periodic modulation is a means of controlling the potential wells threshold of a bistable system. McInnes et al 17 first proposed the possibility of enhancing the performance of a bistable mechanism with stochastic resonance, and provided a numerical analysis to support this.…”

Nonlinear Devices Acting as SNR Amplifiers for a Harmonic Signal in Noise

“…Stochastic resonance [1], [11] is a nonlinear phenomenon where the presence or even the addition of noise can be exploited, in specific conditions, as a possible means for improving some of the signal processing. Stochastic resonance has been shown exploitable for SNR amplification in the type of memoryless nonlinear devices we will be considering here, and the significance of our results in this direction will also be discussed.…”