JPS6446684A - Obstacle detection device for civil working machine - Google Patents
Obstacle detection device for civil working machineInfo
- Publication number
- JPS6446684A JPS6446684A JP62203378A JP20337887A JPS6446684A JP S6446684 A JPS6446684 A JP S6446684A JP 62203378 A JP62203378 A JP 62203378A JP 20337887 A JP20337887 A JP 20337887A JP S6446684 A JPS6446684 A JP S6446684A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- front plate
- dielectric constant
- specific dielectric
- obstacle
- 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
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Geophysics And Detection Of Objects (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To accurately detect an obstacle such as a buried body by forming a front member which contacts the ground at the tip part of a civil work machine by using a nonmetallic material and setting its specific dielectric constant close to that of the ground. CONSTITUTION:A front plate 2 made of ceramics is mounted as the front member on the tip part 1 of the civil work machine. When the machine is used, the external surface side of the front plate 2 contacts the ground (dielectric constant=2-80). In general, an electromagnetic wave is reflected by the border part of a material which differs in specific dielectric constant, but the front plate 2 is made of ceramics, so the specific dielectric constant of the front plate 2 is made nearly equal to that of the ground and the reflection quantity of the electromagnetic wave on the contact surface is suppressed greatly. Then if there is an obstacle such as a buried body in the ground in the advance direction, its reflected radio wave passes through the contact surface of the front plate 2 contacting the ground and the front plate 2 efficiently ad is received by a receiving antenna element 4.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203378A JPS6446684A (en) | 1987-08-18 | 1987-08-18 | Obstacle detection device for civil working machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62203378A JPS6446684A (en) | 1987-08-18 | 1987-08-18 | Obstacle detection device for civil working machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446684A true JPS6446684A (en) | 1989-02-21 |
JPH0567196B2 JPH0567196B2 (en) | 1993-09-24 |
Family
ID=16473044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62203378A Granted JPS6446684A (en) | 1987-08-18 | 1987-08-18 | Obstacle detection device for civil working machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6446684A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0481679A (en) * | 1990-07-25 | 1992-03-16 | Japan Radio Co Ltd | Apparatus for measuring thickness of heat-resisting brick of furnace |
JP2013506859A (en) * | 2009-10-06 | 2013-02-28 | ルイジアナ テック ユニヴァーシティ リサーチ ファンデーション | Method and apparatus for detecting buried objects |
KR101639339B1 (en) * | 2015-06-11 | 2016-07-13 | 한국지질자원연구원 | Undergroud exploration radar device using the propertties of the mediators |
US9696099B2 (en) | 2011-01-06 | 2017-07-04 | Denso Corporation | Heat exchanger with sealing member and protrusion between core plate and header |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6216196U (en) * | 1985-07-12 | 1987-01-30 | ||
JPS6277294U (en) * | 1985-10-31 | 1987-05-18 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55156086A (en) * | 1979-05-23 | 1980-12-04 | Kanzaki Paper Mfg Co Ltd | Thermosensitive recording means |
-
1987
- 1987-08-18 JP JP62203378A patent/JPS6446684A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6216196U (en) * | 1985-07-12 | 1987-01-30 | ||
JPS6277294U (en) * | 1985-10-31 | 1987-05-18 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0481679A (en) * | 1990-07-25 | 1992-03-16 | Japan Radio Co Ltd | Apparatus for measuring thickness of heat-resisting brick of furnace |
JP2013506859A (en) * | 2009-10-06 | 2013-02-28 | ルイジアナ テック ユニヴァーシティ リサーチ ファンデーション | Method and apparatus for detecting buried objects |
US9052394B2 (en) | 2009-10-06 | 2015-06-09 | Louisiana Tech University Research Foundation | Method and apparatus for detecting buried objects |
US9696099B2 (en) | 2011-01-06 | 2017-07-04 | Denso Corporation | Heat exchanger with sealing member and protrusion between core plate and header |
KR101639339B1 (en) * | 2015-06-11 | 2016-07-13 | 한국지질자원연구원 | Undergroud exploration radar device using the propertties of the mediators |
Also Published As
Publication number | Publication date |
---|---|
JPH0567196B2 (en) | 1993-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |