کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5006389 1461476 2017 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A portable embedded contactless system for the measurement of metallic material conductivity and lift-off
ترجمه فارسی عنوان
یک سیستم بدون تماس بدون جرثقیل قابل تعویض برای اندازه گیری رسانایی مواد فلزی و بلند کردن آن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی
This paper describes the development, implementation and characterization of a portable embedded measurement system for the contactless estimation of a metallic material conductivity and of the lift-off between the system probe and the metallic material surface. The system consists on an absolute probe with compensation and is capable of measuring the in-phase and in-quadrature components of the probe output voltage using as a reference the probe stimulus voltage. The stimulus module includes a direct digital synthesizer (DDS) to set the measurement frequency, while the acquisition module includes analog voltage amplification and analog-to-digital conversion. A microcontroller is used to control the measurement, process the acquired voltage samples, estimate the desired parameters and perform USB communication. The final dimensions of the pen-like system, its capability of communication with a smartphone and its ability to power the system from the smartphone make it highly portable and especially suited for non-destructive testing (NDT) and field measurements.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 111, December 2017, Pages 441-450
نویسندگان
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