JPS628741B2 - - Google Patents
Info
- Publication number
- JPS628741B2 JPS628741B2 JP52031457A JP3145777A JPS628741B2 JP S628741 B2 JPS628741 B2 JP S628741B2 JP 52031457 A JP52031457 A JP 52031457A JP 3145777 A JP3145777 A JP 3145777A JP S628741 B2 JPS628741 B2 JP S628741B2
- Authority
- JP
- Japan
- Prior art keywords
- wood
- antennas
- transmitting
- receiving antenna
- microwave
- 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 claims description 129
- 230000005540 biological transmission Effects 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 14
- 230000001902 propagating effect Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 230000003111 delayed effect Effects 0.000 claims description 3
- 230000010287 polarization Effects 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 239000013598 vector Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 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)
- Length-Measuring Devices Using Wave Or Particle Radiation (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Geophysics And Detection Of Objects (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 |
|---|---|
| JPS52138197A JPS52138197A (en) | 1977-11-18 |
| JPS628741B2 true JPS628741B2 (enExample) | 1987-02-24 |
Family
ID=27240969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3145777A Granted JPS52138197A (en) | 1976-03-22 | 1977-03-22 | Observing apparatus for rapid change in reflection or transmission energy by wood in radio frequency range |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS52138197A (enExample) |
| DE (1) | DE2712600C2 (enExample) |
| SE (1) | SE418774B (enExample) |
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 |
| DE60034811T2 (de) * | 1999-11-19 | 2008-01-24 | Rhino Analytics, Llc, Austin | Interferometrischer mikrowellensensor |
| 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 |
|---|---|
| JPS52138197A (en) | 1977-11-18 |
| DE2712600A1 (de) | 1977-09-29 |
| DE2712600C2 (de) | 1986-06-19 |
| SE418774B (sv) | 1981-06-22 |
| SE7703300L (sv) | 1977-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS628741B2 (enExample) | ||
| US6075498A (en) | Surface wave directional detection system and method | |
| US4041499A (en) | Coaxial waveguide antenna | |
| EP0495819B1 (en) | Improvements to oil/water measurement | |
| Monteath | Coupled transmission lines as symmetrical directional couplers | |
| US4634963A (en) | Method and apparatus for the testing of dielectric materials | |
| JP6305444B2 (ja) | 媒体の誘電特性を求めるためのセンサおよび方法 | |
| US7164285B1 (en) | Directional power detection by quadrature sampling | |
| US10088512B2 (en) | Vector network analyzer | |
| JPH02503822A (ja) | 物体により回折されたマイクロ波電磁界を複数の位置で測定するための装置 | |
| CA1124326A (en) | Microwave moisture-profile gauge | |
| US6930492B2 (en) | Using surface microwaves for measuring and determining density and/or moisture content of a material | |
| US4319185A (en) | Delay line microwave moisture measuring apparatus | |
| US4659982A (en) | Microwave apparatus and method of operation to determine position and/or speed of a movable body or discontinuity or change in a material | |
| US5438276A (en) | Apparatus for measuring the life time of minority carriers of a semiconductor wafer | |
| SE515126C2 (sv) | Testanordning och förfarande för test av transmissionsutrustning | |
| JPS6255631B2 (enExample) | ||
| Hasar | Accurate complex permittivity inversion from measurements of a sample partially filling a waveguide aperture | |
| EP1316806A1 (en) | Non-contact measuring probe device for directional detection of an electromagnetic wave and measuring method | |
| FI128134B (en) | A method and apparatus for measuring the properties of a moving web | |
| GB1560591A (en) | Apparatus for observing an abrupt change in the radio frequency energy reflected or passed by timber | |
| US3757330A (en) | Microwave interferometers | |
| GB1564194A (en) | Apparatus for observing an abprupt change in the radio frequency energy reflected or passed by timber | |
| US2775737A (en) | Standing wave measuring system | |
| Spector | An investigation of periodic rod structures for Yagi aerials |