کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
731531 893070 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects on microwave measurements and simulations when collecting data close to edges of wooden boards
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
پیش نمایش صفحه اول مقاله
Effects on microwave measurements and simulations when collecting data close to edges of wooden boards
چکیده انگلیسی

Parameters like strength, moisture content, density and grain direction are important when sorting wood according to their individual properties. All those parameters can be correlated to microwave measurements of phase shift and attenuation. Measurements of phase shift and attenuation are, however, affected by the vicinity of a board edge. In this article a simulation of the measurement system is used to create a compensation function for the measurements taken close to edges as if those were taken where no effects of the board edge could be noticed. It is shown, by comparison with real measurements, that by doing this the deviation between the values measured close to the board edges and those measured in the middle of the board is decreased, meaning a higher accuracy can be achieved by using the compensating function.


► We model a microwave measurement system to increase the accuracy in the vicinity of an edge.
► Accurate measurements close to edges gives higher possibility to detect variations in small objects.
► Diffraction phenomena need to be taken into account when dielectric properties changes abruptly.
► Correlations can be done to measured data by using a model of the measurement system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 45, Issue 3, April 2012, Pages 525–528
نویسندگان
, , , ,