Eulalia Balestrieri, Pasquale Daponte, Luca De Vito, Francesco Picariello, Sergio Rapuano, Ioan Tudosa
Experimental Assessment of a Novel CS-based Acquisition Method for ECG Signals in IoMT

The paper presents the results obtained from a preliminary experimental assessment of a novel method which relies on Compressed Sampling (CS) of electrocardiographic (ECG) signal. The mathematical model for CS-based acquisition of ECG signals and its feasibility for practical implementation for an Internet-of-Medical Things (IoMT) system are described. Herein, the presented experimental results demonstrate the robustness and convenience of the proposed method.

Xiaoyuan Wu, Yan Yang, Zongtao Chi
Design of Small Capacitance Standards Based on Analytical and Simulation Approaches

In the paper, analytical model and simulation are adopted to design of small capacitance standards based on fused silica. The small capacitance standards is designed with Kelvin equipotential protection structure. The stray capacitance introduced by the air gap between the capacitance eletrode and the Kelvin equipotential protection electrode(guard electrode) will affect the small capacitance value. The analytical model of the capacitor is established and the Schwarz-Christoffel transformation is used to analyze the stray capacitance. By adjusting the size of the air gap between the central electrode and the guard electrode, the electric field line collected by the guard electrode is controllable and usable to predict the final capacitance. The finite element analysis software Ansoft is used to simulate the small capacitance under different air gaps with limited ranges, and the appropriate air gap is recomended for implementing of small capacitance standards.

Platon Sovilj, Vladimir Vujičić, Zoran Mitrović, Dragan Pejić, Bojan Vujičić, Đorđe Novaković
Metrology, Electrical Energy Markets and Engineering Education at University of Novi Sad (Serbia)

This paper begins with presentation of the main facts about University of Novi Sad (Serbia) and its Faculty of Technical Sciences. Important results of metrology in electrical engineering from past to nowadays, at Faculty of Technical Sciences (University of Novi Sad), are consequently described. The role of the Centre of Metrology is recognized as the basis for cooperation between university and industry in the field of metrology. All these parameters enabled ELEMEND – EU ERASMUS+ project for electrical energy markets and engineering education which is being implemented at University of Novi Sad. Finally, this resulted with developing modernized education curricula: studying program "Measurement-information Technology and Control Engineering" and studying module "Measurement-Information Systems".

Zengmin Wang, Honghui Li, Yuan Gao, Yunfeng Lu, Qing He
Applications of Programmable Josephson Voltage Standard on Magnetic Measurements

This paper describes the progress of magnetic applications on Programmable Josephson Voltage Standard (PJVS) at NIM. In past few years, we developed a PJVS based magnetic flux measurement system and continued improving the magnetic flux and the mutual inductance measurement accuracy. This paper introduces the automatic flux and mutual inductance measurement system that we developed. Experimental results show that the type A uncertainty of the measurement of mutual inductances of 577 mH is less than 2 ppm, which demonstrates the feasibility and reliability of the flux and mutual inductance measurement system we proposed.

Wenjing Liu, Haiyang Zhang, Bo Gao, Changzhao Pan, Dongxu Han, Jiangfeng Hu, Yaonao Song, Hui Chen, Xiangjie Kong, Ercang Luo, Laurent Pitre
Comparsion of different kinds of frequency scanning methods used at low temperature

A novel single pressure refractive index gas thermometry (SPRIGT) has been collaboratively developing by the TIPC-CAS in China and the LNE-Cnam in France. In the SPRIGT, microwave resonance frequencies are used to determine the refractive index of a working gas in a quasi-spherical resonator at a single pressure and temperature. Then an unknown temperature can be determined by comparing the refractive index with that at a reference temperature. Usually, the resonance frequencies were obtained by fitting the S21 scattering parameters with respect to the scanning frequencies, which are generated by a network analyzer using a frequency list generating routine. To realize high accuracy measurement in frequency at low temperatures, three kinds of frequency list generating method (scanning method), namely frequency uniform method, phase angle uniform method and their hybridization method (mixture method), have been investigated. The results show the phase angle uniform and mixture method is easier to realize high accuracy measurement than frequency uniform method at low temperature. Besides, long-time stability in frequency were also studied in this work, the results show that the phase angle uniform and mixture method have a same level stability, thus they can be used in the SPRIGT.