JPS52138197A - Observing apparatus for rapid change in reflection or transmission energy by wood in radio frequency range - Google Patents
Observing apparatus for rapid change in reflection or transmission energy by wood in radio frequency rangeInfo
- Publication number
- JPS52138197A JPS52138197A JP3145777A JP3145777A JPS52138197A JP S52138197 A JPS52138197 A JP S52138197A JP 3145777 A JP3145777 A JP 3145777A JP 3145777 A JP3145777 A JP 3145777A JP S52138197 A JPS52138197 A JP S52138197A
- Authority
- JP
- Japan
- Prior art keywords
- wood
- reflection
- radio frequency
- frequency range
- rapid change
- 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.)
- Granted
Links
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 (en) | 1976-03-22 | 1976-03-22 | Device for detecting a sudden change in radio frequency energy reflected or transmitted from timber |
FI762850A FI53364C (en) | 1976-10-06 | 1976-10-06 | ANORDINATION FOR IAKTTAGANDE AV PLOETSLIG AENDRING I FRAON VIRKE REFLEKTERAD ELLER GENOM DETTA PASSERAD FRAON ETT ANTENNPAR ERHAOLLEN RADIOFREKVENT ENERGI |
FI762851A FI53365C (en) | 1976-10-06 | 1976-10-06 | ANORDING FOR THE FREON VIRKE VIRKE REFLECTOR ELLER GENOM DETTA PASSER RADIO FREQUENCY ENERGY VIDEO DETECTER AV SNEDFIBRIGHET I VIRKE |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS52138197A true JPS52138197A (en) | 1977-11-18 |
JPS628741B2 JPS628741B2 (en) | 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 (en) |
DE (1) | DE2712600C2 (en) |
SE (1) | SE418774B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886443A (en) * | 1981-11-18 | 1983-05-24 | Agency Of Ind Science & Technol | Measuring method for directivity of anisotropic material |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI57490C (en) * | 1978-06-01 | 1980-08-11 | Innotec Oy | FOERFARANDE FOER BESTAEMNING AV SNEDFIBRIGHETEN I VIRKE I SYNNERHET I SAOGAT VIRKE |
LU84307A1 (en) * | 1982-07-29 | 1984-03-22 | Bekaert Sa Nv | SYSTEM FOR THE IDENTIFICATION OF MICROWAVE SHEET ITEMS |
LU84308A1 (en) * | 1982-07-29 | 1984-03-22 | Bekaert Sa Nv | SYSTEM FOR THE IDENTIFICATION OF MICROWAVE SHEET ITEMS |
US4514680A (en) * | 1983-01-28 | 1985-04-30 | A.Ahlstrom Osakeyhtio | Flaw detection system using microwaves |
FR2578983B2 (en) * | 1985-03-12 | 1988-04-01 | Centre Nat Rech Scient | IMPROVEMENTS IN CORRELATION SIGNAL PROCESSING PROCESS |
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 |
AU603456B2 (en) * | 1987-06-23 | 1990-11-15 | De Beers Industrial Diamond Division (Proprietary) Limited | Sorting method and apparatus |
JPH0727713Y2 (en) * | 1989-04-14 | 1995-06-21 | 株式会社東芝 | Cover opening and closing device for telephones, etc. |
JP2003515130A (en) | 1999-11-19 | 2003-04-22 | ライノ・アナリティクス・エルエルシー | ΔL microwave sensor with improved sensitivity |
DE10149317B4 (en) * | 2001-10-05 | 2015-02-19 | Albert-Ludwigs-Universität Freiburg | Device for measuring the dielectric properties of a substrate |
CA2636495C (en) * | 2006-01-17 | 2016-09-06 | University Of Northern British Columbia | Methods and apparatus for determining fibre orientation |
DE102011110011B4 (en) * | 2011-08-11 | 2014-05-22 | Fagus-Grecon Greten Gmbh & Co. Kg | Device for checking a wood material, in particular a wood-based panel in a continuous strand during its manufacture |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE407982B (en) * | 1975-02-14 | 1979-04-30 | Innotec Oy | ASSUMED THAT FOR CLASSIFICATION OR SORTING OF TIMES INVESTIGATE THE PRESENCE OF TWINS IN IT |
-
1977
- 1977-03-22 SE SE7703300A patent/SE418774B/en not_active IP Right Cessation
- 1977-03-22 DE DE19772712600 patent/DE2712600C2/en not_active Expired
- 1977-03-22 JP JP3145777A patent/JPS52138197A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5886443A (en) * | 1981-11-18 | 1983-05-24 | Agency Of Ind Science & Technol | Measuring method for directivity of anisotropic material |
JPS6359459B2 (en) * | 1981-11-18 | 1988-11-18 |
Also Published As
Publication number | Publication date |
---|---|
SE418774B (en) | 1981-06-22 |
DE2712600A1 (en) | 1977-09-29 |
DE2712600C2 (en) | 1986-06-19 |
JPS628741B2 (en) | 1987-02-24 |
SE7703300L (en) | 1977-09-23 |
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