Study on a telemetrie system that works with an inkjet-printed resistive strain gauge

Abstract

Measuring strain is a task frequently required in many applications and, often, measurement devices have to adopt technologies that respect specific requirements, especially concerning power supply and transmission of information. In particular, the exploitation of wired solutions or batteries has several problems or it should be avoided in harsh environments. A valid answer to these issues is provided by telemetric systems, which consist of a reading unit that communicates with a passive sensor through the magnetic field established between two inductors connected to these components. The present work describes a study carried out on a telemetric system that has some elements of novelty with respect to the major part of those found in the literature. In fact, it operates with a resistive strain gauge realized through the innovative technology of inkjet printing on a flexible substrate. This permits to introduce advantages relating to design variability and low production cost of the components. Experimental tests were conducted in order to characterize the strain gauge and analyze overall system frequency behavior. Preliminary achieved results are satisfying, highlighting the possibility to measure telemetrically the strain from an inkjet-printed resistive sensor

Seeds triggered massive synthesis and multi-step room temperature post-processing of silver nanoink—application for paper electronics

“…It meets the technique requirement of high performance resistive strain sensors well. 47 However, we also observed when the curvature continued to increase from 500 m À1 to 4000 m À1 (corresponding to r ¼ 2 mm and 0.25 mm, respectively), both the values of the resistance and their uctuation range increased obviously corresponding to a serious electrical performance deterioration. It means the current printed silver tracks are not suitable to be frequently folded inhalf when they are applied to the fabrication of electronic devices requiring high stability and accuracy.…”

Characterization of Low-Cost Inkjet Printed-Photonic Cured Strain Gauges for Remote Sensing and Structural Monitoring Applications

“…Therefore, in addition to R 0 , frequency response ω and frequency dependent impedance of printed strain gauges Z(ω) = R(ω) + jX(ω), which is composed of resistance R(ω) and reactance X(ω), should be measured. Such characterization is especially useful for matching the impedance with the circuitry used in passive strain gauge measurement telemetry system, through which the strains can be remotely read [22][23][24].…”

Characterization of low-cost inkjet printed-photonic cured strain gauges for remote sensing and structural monitoring applications

“…, should be measured. Such characterization is especially useful for matching the impedance with the circuitry used in passive strain gauge measurement telemetry system, through which the strains can be remotely read [22,23,24].…”