发明名称 |
Method and apparatus for estimating the projection on a reference plane of the direction of extension of the fibres of a portion of a wooden plank |
摘要 |
A method for estimating the projection on a reference plane (XZ) perpendicular to a first face (2) of a plank (1), of the direction of extension of the fibres (L) comprising the steps of:
emitting a first and a second polarized microwave beam towards the plank (1) according to a first and second directions of incidence lying in a first and second plane (P±), (P²) which form a first and second minimum angle (±1), (²1) with said first face (2) which are not less than 30° and which intersect the first face (2) along a first and second lines transversal to the nominal direction of the fibres (N); the second plane (P²) also forming with the first plane (P±) a third minimum angle (±²) which is not less than 30°;
detecting the residual part of the first and second beam which passed through the plank (1);
determining amplitude and phase corresponding to those of the residual parts detected; and
estimating the orientation of said projection by processing the amplitudes and phases previously determined. It is also claimed a device operating such a method. |
申请公布号 |
EP2829876(A1) |
申请公布日期 |
2015.01.28 |
申请号 |
EP20140178236 |
申请日期 |
2014.07.23 |
申请人 |
MICROTEC S.R.L. |
发明人 |
DENZLER, JULIA;KOPPENSTEINER, JOHANNES;WEIDENHILLER, ANDREAS;ARTHABER, HOLGER;LEDER, NORBERT |
分类号 |
G01N33/46;G01N22/00 |
主分类号 |
G01N33/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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