CA2046895C - Appareil a balayage par micro-ondes - Google Patents
Appareil a balayage par micro-ondes Download PDFInfo
- Publication number
- CA2046895C CA2046895C CA002046895A CA2046895A CA2046895C CA 2046895 C CA2046895 C CA 2046895C CA 002046895 A CA002046895 A CA 002046895A CA 2046895 A CA2046895 A CA 2046895A CA 2046895 C CA2046895 C CA 2046895C
- Authority
- CA
- Canada
- Prior art keywords
- polarisation
- sample
- microwave radiation
- rotating means
- timber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000005855 radiation Effects 0.000 claims abstract description 42
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 230000010363 phase shift Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000002023 wood Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 238000009659 non-destructive testing Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
On a mis au point un appareil de test d'échantillons, notamment de bois scié afin de déterminer la teneur en humidité, la densité, la présence de noeuds ou de sève, la pente du grain et le parallèlisme des fibres, utilisant un rayonnement à micro-ondes polarisé en plan. Ledit appareil comprend des moyens (7 à 11) transmettant le rayonnement à un échantillon (1) ainsi que des moyens (12 à 17) détectant le rayonnement transmis dans l'échantillon. Lesdits moyens de transmission et de détection comprennent des moyens (10 et 14) faisant tourner de manière réglable le plan de polarisation des rayonnements à micro-ondes transmis et reçus. Ledit appareil peut comprendre un bras d'un circuit en pont comportant un autre bras de référence (5).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPJ273689 | 1989-02-14 | ||
| AUPJ2736 | 1989-02-14 | ||
| PCT/AU1990/000046 WO1990009578A1 (fr) | 1989-02-14 | 1990-02-09 | Appareil d'analyse a micro-ondes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2046895A1 CA2046895A1 (fr) | 1990-08-15 |
| CA2046895C true CA2046895C (fr) | 2000-11-14 |
Family
ID=3773714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002046895A Expired - Fee Related CA2046895C (fr) | 1989-02-14 | 1990-02-09 | Appareil a balayage par micro-ondes |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2046895C (fr) |
| WO (1) | WO1990009578A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2295018B (en) * | 1994-11-09 | 1998-07-08 | Secr Defence | Method and system for determining the integrity of mechanical seals |
| US5845529A (en) * | 1995-07-18 | 1998-12-08 | Malcam Ltd. | Device and method for determining the moisture content of material |
| CA2424214C (fr) | 2000-10-11 | 2009-10-06 | New Zealand Forest Research Institute Limited | Evaluation d'humidite par micro-ondes au moyen d'un guide d'ondes a fentes |
| CA2890124C (fr) * | 2012-11-01 | 2021-06-15 | Sp Sveriges Tekniska Forskningsinstitut Ab | Procede et systeme de determination automatique de qualite du bois a l'etat gele ou non gele |
| ITBZ20130037A1 (it) | 2013-07-25 | 2015-01-26 | Microtec Srl | Metodo ed apparecchiatura per stimare la proiezione su di un piano di riferimento della direzione di sviluppo delle fibre di una porzione di una tavola di legno |
| AT14962U1 (de) * | 2014-11-13 | 2016-09-15 | Dunakontroll Irányitástechnikai Kft | Hochfrequenzmesssystem zum Messen des Feuchtigkeitsgehalts von Papier und verschiedenen faserhaltigen Materialien |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2798197A (en) * | 1953-11-16 | 1957-07-02 | Shell Dev | Microwave bridge |
| DE2239848A1 (de) * | 1972-08-12 | 1974-02-21 | Bayer Ag | Mikrowellentransmissionsanordnung zur messung des wassergehaltes |
| SU623145A1 (ru) * | 1976-02-26 | 1978-09-05 | Yastrebov Oleg | Способ неразрушающего контрол механической анизотропии диэлектрических материалов |
| SU726475A1 (ru) * | 1978-05-03 | 1980-04-05 | Ленинградский Ордена Трудового Красного Знамени Технологический Институт Им. Ленсовета | Сверхвысокочастотное устройство дл неразрушающего контрол диэлектрических материалов |
| SU813211A1 (ru) * | 1979-04-25 | 1981-03-15 | Предприятие П/Я В-8772 | Устройство дл дефектоскопиидиэлЕКТРиКОВ |
| JPS60227156A (ja) * | 1984-04-25 | 1985-11-12 | Kanzaki Paper Mfg Co Ltd | シ−トの配向性測定方法 |
| SU1195231A1 (ru) * | 1984-05-16 | 1985-11-30 | Белорусский институт механизации сельского хозяйства | Устройство дл определени влажности сыпучих материалов |
-
1990
- 1990-02-09 CA CA002046895A patent/CA2046895C/fr not_active Expired - Fee Related
- 1990-02-09 WO PCT/AU1990/000046 patent/WO1990009578A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CA2046895A1 (fr) | 1990-08-15 |
| WO1990009578A1 (fr) | 1990-08-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |