DE2712600C2 - Vorrichtung zum Erfassen einer plötzlichen Veränderung der von Holzgut durchgelassenen oder reflektierten Energie mit Hochfrequenz - Google Patents
Vorrichtung zum Erfassen einer plötzlichen Veränderung der von Holzgut durchgelassenen oder reflektierten Energie mit HochfrequenzInfo
- Publication number
- DE2712600C2 DE2712600C2 DE19772712600 DE2712600A DE2712600C2 DE 2712600 C2 DE2712600 C2 DE 2712600C2 DE 19772712600 DE19772712600 DE 19772712600 DE 2712600 A DE2712600 A DE 2712600A DE 2712600 C2 DE2712600 C2 DE 2712600C2
- Authority
- DE
- Germany
- Prior art keywords
- wood
- antennas
- antenna
- waveguide
- pair
- 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
Links
- 239000002023 wood Substances 0.000 title claims description 68
- 230000005855 radiation Effects 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000010363 phase shift Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 4
- 229920002522 Wood fibre Polymers 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims description 2
- 230000010287 polarization Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002025 wood fiber Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 description 14
- 230000005684 electric field Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000013598 vector Substances 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/46—Wood
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Wood Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Electromagnetism (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Geophysics And Detection Of Objects (AREA)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI760753A FI52406C (fi) | 1976-03-22 | 1976-03-22 | Laite puutavarasta heijastuneen tai läpi kulkeneen radiotaajuisen ener gian äkillisen muutoksen havaitsemiseksi |
FI762851A FI53365C (fi) | 1976-10-06 | 1976-10-06 | Anordning foer utnyttjande av fraon virke reflekterad eller genom detta passerad radiofrekvent energi vid detektering av snedfibrighet i virke |
FI762850A FI53364C (fi) | 1976-10-06 | 1976-10-06 | Anordning foer iakttagande av ploetslig aendring i fraon virke reflekterad eller genom detta passerad fraon ett antennpar erhaollen radiofrekvent energi |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2712600A1 DE2712600A1 (de) | 1977-09-29 |
DE2712600C2 true DE2712600C2 (de) | 1986-06-19 |
Family
ID=27240969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772712600 Expired DE2712600C2 (de) | 1976-03-22 | 1977-03-22 | Vorrichtung zum Erfassen einer plötzlichen Veränderung der von Holzgut durchgelassenen oder reflektierten Energie mit Hochfrequenz |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS52138197A (enrdf_load_stackoverflow) |
DE (1) | DE2712600C2 (enrdf_load_stackoverflow) |
SE (1) | SE418774B (enrdf_load_stackoverflow) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI57490C (fi) * | 1978-06-01 | 1980-08-11 | Innotec Oy | Foerfarande foer bestaemning av snedfibrigheten i virke i synnerhet i saogat virke |
JPS5886443A (ja) * | 1981-11-18 | 1983-05-24 | Agency Of Ind Science & Technol | 異方性材料の方向性測定方法 |
LU84308A1 (fr) * | 1982-07-29 | 1984-03-22 | Bekaert Sa Nv | Systeme pour l'identification d'articles en feuilles par micro-ondes |
LU84307A1 (fr) * | 1982-07-29 | 1984-03-22 | Bekaert Sa Nv | Systeme pour l'identification d'articles en feuilles par micro-ondes |
US4514680A (en) * | 1983-01-28 | 1985-04-30 | A.Ahlstrom Osakeyhtio | Flaw detection system using microwaves |
US4659982A (en) * | 1984-06-21 | 1987-04-21 | Centre National De La Recherches Scientifique | Microwave apparatus and method of operation to determine position and/or speed of a movable body or discontinuity or change in a material |
FR2578983B2 (fr) * | 1985-03-12 | 1988-04-01 | Centre Nat Rech Scient | Perfectionnements au procede de traitement du signal par correlation |
AU603456B2 (en) * | 1987-06-23 | 1990-11-15 | De Beers Industrial Diamond Division (Proprietary) Limited | Sorting method and apparatus |
EP1242812B1 (en) | 1999-11-19 | 2007-05-09 | Rhino Analytics, Llc | Interferometric microwave sensor |
DE10149317B4 (de) * | 2001-10-05 | 2015-02-19 | Albert-Ludwigs-Universität Freiburg | Vorrichtung zur Messung der dielektrischen Eigenschaften eines Substrats |
US7829855B2 (en) * | 2006-01-17 | 2010-11-09 | University Of Northern British Columbia | Methods and apparatus for determining fibre orientation |
DE102011110011B4 (de) * | 2011-08-11 | 2014-05-22 | Fagus-Grecon Greten Gmbh & Co. Kg | Vorrichtung zum Überprüfen eines Holzwerkstoffes, insbesondere einer Holzwerkstoffplatte in einem fortlaufenden Strang während ihrer Herstellung |
CN115144438B (zh) * | 2022-06-30 | 2024-11-29 | 青岛理工大学 | 一种无线微带贴片天线传感器及在脱粘缺陷检测领域的应用 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE407982B (sv) * | 1975-02-14 | 1979-04-30 | Innotec Oy | Sett att for klassificering eller sortering av virke undersoka forekomsten av kvistar deri |
-
1977
- 1977-03-22 JP JP3145777A patent/JPS52138197A/ja active Granted
- 1977-03-22 SE SE7703300A patent/SE418774B/xx not_active IP Right Cessation
- 1977-03-22 DE DE19772712600 patent/DE2712600C2/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE7703300L (sv) | 1977-09-23 |
SE418774B (sv) | 1981-06-22 |
JPS52138197A (en) | 1977-11-18 |
JPS628741B2 (enrdf_load_stackoverflow) | 1987-02-24 |
DE2712600A1 (de) | 1977-09-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |