发明名称 |
MICROWAVE MOISTURE SENSING VIA WAVEGUIDE WITH SLOT ARRAY |
摘要 |
A generator (6) directs microwave signals to a waveguide (1) having a linear array of slots (2), and the signals are received by measuring means (5). The local permittivity or moisture content of material adjacent the waveguide (1 ), such as a stack of timber, may be determined at each slot (2) via regression analysis. The total permittivity or moisture may be determined by averaging measurements obtained for both transmission directions of the waveguide (1). The apparatus may be used for controlling drying parameters, such as drying time, for the material.
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申请公布号 |
CA2424214(C) |
申请公布日期 |
2009.10.06 |
申请号 |
CA20012424214 |
申请日期 |
2001.10.11 |
申请人 |
NEW ZEALAND FOREST RESEARCH INSTITUTE LIMITED;INDUSTRIAL RESEARCH LIMITED |
发明人 |
HOLMES, WAYNE STEPHEN;RILEY, STEPHEN GEOFFREY |
分类号 |
G01N22/04;F26B25/22;G01N22/00 |
主分类号 |
G01N22/04 |
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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