Uncertainty evaluation of the Unified Method for thermo-electric module characterization

D’Aucelli, Giuseppe Maria; Giaquinto, Nicola; Carducci, Carlo Guarnieri Calò; Spadavecchia, Maurizio; Trotta, A.

doi:10.1016/j.measurement.2018.08.070

Cited by 13 publications

(4 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The control unit is composed of electronic circuitry placed in a case with one or more ports for connecting the cables. Even if protected, the circuitry is subjected to thermal, electrical, and magnetic disturbances [16], [17]. The identification of these disturbances is essential for the performances of the devices and to improve competitivity in the market.…”

Section: Measurement Uncertaintymentioning

confidence: 99%

Metrological characterization of instruments for body impedance analysis

et al. 2022

View full text Add to dashboard Cite

<p>Body impedance analysis (BIA) is used to evaluate the human body composition by measuring the resistance and reactance of human tissues with a high-frequency, low-intensity electric current. Nonetheless, the estimation of the body composition is influenced by many factors: body status, environmental conditions, instrumentation, and measurement procedure. This work studies the effect of the connection cables, conductive electrodes, adhesive gel, and BIA device characteristics on the measurement uncertainty. Tests were initially performed on electric circuits with passive elements and on a jelly phantom simulating the body characteristics. Results showed that the cables mainly contribute to increase the error on the resistance measurement, while the electrodes and the adhesive introduce a negligible disturbance on the measurement chain. This paper also proposes a calibration procedure based on a multivariate linear regression to compensate for the systematic error effect of BIA devices.</p>

show abstract

Section: Measurement Uncertaintymentioning

confidence: 99%

Metrological characterization of instruments for body impedance analysis

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Measuring the efficiency of TEGs systems is a complex task, and various configurations of automatic measurement rigs were presented in the literature [14][15][16][17][18]. In order to characterize the ensemble of thermoelectric generators with a stable temperature gradient, the apparatus presented in Figure 3 was developed.…”

Section: Thermal Systemmentioning

confidence: 99%

Optimization of the TEGs Configuration (Series/Parallel) in Energy Harvesting Systems with Low-Voltage Thermoelectric Generators Connected to Ultra-Low Voltage DC–DC Converters

et al. 2020

View full text Add to dashboard Cite

Solar radiation and human activity generate ubiquitous temperature gradients that could be harvested by thermoelectric generators (TEGs). However, most of these temperature gradients are in the range of very few degrees and, while TEGs are able to harvest them, the resulting output voltages are extremely small (a few hundreds of mV), and DC–DC converters are necessary to boost them to usable levels. Impedance matching between TEGs and DC–DC converter plays a fundamental role in the energy harvesting efficiency. Therefore, it is essential to determine the output power of the system in different configurations, in order to decide on the optimum TEG connection. Here, we present an electronic circuit to measure the maximum power that can be harvested with low-voltage TEGs connected to a DC–DC converter. The developed circuit is an electronic controlled load that drains the maximum current from the output of the DC–DC converter while maintaining its output voltage at the maximum allowed value. Using a mechanical set-up able to apply precise low temperature gradients between the hot and cold side of the TEGs, experimental data using different configurations of TEGs are obtained. The measured results show that, for ultra-low voltages, the TEG ensemble’s output impedance plays an important role not only in the amount of the energy scavenged, but also in the onset temperature of the energy harvesting.

show abstract

“…In [7], a comprehensive review of the state-ofthe-art methods for structural monitoring of buried pipes is presented. The most popular systems are based on acoustic methods [8]; in particular, guided wave inspection systems are largely used to detect damage in pipes [9]- [13]. These A. Cataldo and G. Cannazza are with the Department of Engineering for Innovation -University of Salento, 73100 Lecce, Italy e-mail: andrea.cataldo@unisalento.it, giuseppe.cannazza@unisalento.it.…”

Section: Introductionmentioning

confidence: 99%

A Microwave Measuring System for Detecting and Localizing Anomalies in Metallic Pipelines

Cataldo

Benedetto

Angrisani

et al. 2021

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

In this work, an innovative system for structural health monitoring of metallic pipes is presented. The proposed system relies on using the pipeline as a waveguide for the propagation of an electromagnetic (EM) signal. Possible anomalies in the pipe provoke the partial reflection of the propagating signal. Differently from previous works, in relation to the proposed application, the EM test signal is injected in the pipeline/waveguide through a coaxial/waveguide transition that is made on the surface of the pipe (rather than on a cross-section as generally done). In practical applications, this strategy would allow to connect more easily to operating, buried pipes. Additionally, because reflections caused by anomalies may be difficult to identify with adequate accuracy, the authors have developed a dedicated processing strategy for the analysis of the reflections caused by anomalies. More specifically, by analyzing the measured reflected signal and by correlating it to the ideal reflected signal, it is possible to improve the localization of anomalies along the pipe. The proposed system, along with the processing and operating strategies were validated through fullwave simulations and experimental tests carried out on a steel pipe in presence of intentionally-provoked anomalies.

show abstract

Uncertainty evaluation of the Unified Method for thermo-electric module characterization

Cited by 13 publications

References 41 publications

Metrological characterization of instruments for body impedance analysis

Metrological characterization of instruments for body impedance analysis

Optimization of the TEGs Configuration (Series/Parallel) in Energy Harvesting Systems with Low-Voltage Thermoelectric Generators Connected to Ultra-Low Voltage DC–DC Converters

A Microwave Measuring System for Detecting and Localizing Anomalies in Metallic Pipelines

Contact Info

Product

Resources

About