Super-resolution measurement method for passive wireless resonant surface acoustic wave sensor

Abstract

Purpose

This study aims to use resonant surface acoustic wave (SAW) sensors, which have advantages in the harsh application environments, to measure different physical parameters such as temperature, pressure and force. For SAW sensors, the locality in measurement resolution by the effective time is poor, it cannot give the detailed results of SAW echoes.

Design/methodology/approach

To promote the application of SAW sensor, this paper proposes a convex program-based super-resolution measurement method to recover the missing spectral line and enhance frequency resolution.

Findings

The proposed method reduces the reliance on effective time and improves the measurement resolution of SAW sensors. The performance was validated by experiments.

Originality/value

The limited resolution capability restricts the benefit of SAW technology in harsh environments. The proposed method shed light on SAW measurement resolution increase, exploiting its full potential and leading to commercial applications.

Citation

Liu, B. (2020), "Super-resolution measurement method for passive wireless resonant surface acoustic wave sensor", Sensor Review, Vol. 40 No. 1, pp. 107-111. https://doi.org/10.1108/SR-07-2019-0173