Resumo

PEREZ ROCHE, Lisandra; GONZALEZ RIOS, Jorge L.; RODRIGUEZ GOMEZ, Ricardo  e  VALDES ZALDIVAR, Enrique E.. Characterizing two-terminal devices using Remote Virtual Instrumentation. EAC [online]. 2019, vol.40, n.2, pp. 34-48. ISSN 1815-5928.

This paper presents the design of a remote virtual instrument, hardware-software set, used for the characterization of two-terminal electronic devices, such as resistors and diodes, with remote access capability. The characterization of a device consists of measurement of ordered pairs (voltage, current) for drawing current curves as a function of voltage (I-V characteristic). The hardware system consists of: a conditioning and excitation circuit, a power supply, a Data Acquisition Board (DAQ Board) and a personal computer to which different client computers connect through a TCP/IP network. The software is a virtual instrument programmed in LabVIEW 2015 and runs on the computer. This program performs the signal´s processing associated to the devices, acquired through the DAQ Board, for the subsequent presentation of the results. The programming made allows the execution and configuration of the virtual instrument in a remote form through a web interface. The possibility to save measurement results at the user´s computer as a text file was included. For the system´s validation, different measurements of different two-terminal electronic devices were compared with its theoretical results and experimental data provided by their manufacturers.

Palavras-chave : I-V characteristic; Two-terminal electronic devices; Remote Virtual Instrument; LabVIEW.

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