JPS62197082U - - Google Patents
Info
- Publication number
- JPS62197082U JPS62197082U JP8541486U JP8541486U JPS62197082U JP S62197082 U JPS62197082 U JP S62197082U JP 8541486 U JP8541486 U JP 8541486U JP 8541486 U JP8541486 U JP 8541486U JP S62197082 U JPS62197082 U JP S62197082U
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- underground object
- radio waves
- receiving
- phase
- 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.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Description
第１図はこの考案に係る地中埋設物探知器の実
施例を示すブロツク図、第２図はこの考案の他の
実施例を示すブロツク図、第３図は従来の技術を
説明するブロツク図、第４図は従来の技術によつ
て埋設物を探知する場合の電波の伝達状態を説明
する説明図である。
１……発振器、２……送信アンテナ、３，３ａ
，３ｂ……受信アンテナ、４，４ａ，４ｂ……検
波増幅器、５……指示計、６……容器、７……埋
設物、８……地中、９……地面、１０，１０ａ，
１０ｂ，１３，１３ａ，１３ｂ……方向性結合器
、１１，１１ａ，１１ｂ……移相器、１２，１２
ａ，１２ｂ……リアクタンス減衰器、１５……分
配合成器。
Fig. 1 is a block diagram showing an embodiment of the underground object detector according to this invention, Fig. 2 is a block diagram showing another embodiment of this invention, and Fig. 3 is a block diagram explaining the conventional technology. , FIG. 4 is an explanatory diagram illustrating the transmission state of radio waves when a buried object is detected by the conventional technique. 1... Oscillator, 2... Transmission antenna, 3, 3a
, 3b... Receiving antenna, 4, 4a, 4b... Detection amplifier, 5... Indicator, 6... Container, 7... Buried object, 8... Underground, 9... Ground, 10, 10a,
10b, 13, 13a, 13b... Directional coupler, 11, 11a, 11b... Phase shifter, 12, 12
a, 12b... Reactance attenuator, 15... Distribution combiner.
Claims (1)
よる反射波を受信アンテナで受信することにより
、前記地中埋設物の存在を探知するようにした地
中埋設物探知器において、発振器から前記送信ア
ンテナに供給される送信信号の一部を、前記送信
アンテナから前記受信アンテナに直接入力される
漏れ込み電波の位相と逆位相で同レベルとなるよ
うに移相器とリアクタンス減衰器とを設定して、
前記受信アンテナで受信された信号に合成し、前
記送信アンテナから前記受信アンテナに直接入力
される漏れ込み電波を相殺するように構成したこ
とを特徴とする地中埋設物探知器。 In the underground object detector, the presence of the underground object is detected by receiving reflected waves from the underground object of the radio waves radiated from the transmitting antenna by the receiving antenna. A phase shifter and a reactance attenuator are set so that a part of the supplied transmission signal is at the same level and in an opposite phase to the phase of leakage radio waves directly input from the transmission antenna to the reception antenna,
An underground object detector characterized in that it is configured to be combined with a signal received by the receiving antenna to cancel leakage radio waves input directly from the transmitting antenna to the receiving antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8541486U JPS62197082U (en) | 1986-06-06 | 1986-06-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8541486U JPS62197082U (en) | 1986-06-06 | 1986-06-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62197082U true JPS62197082U (en) | 1987-12-15 |
Family
ID=30940794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8541486U Pending JPS62197082U (en) | 1986-06-06 | 1986-06-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62197082U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015052838A1 (en) * | 2013-10-11 | 2015-04-16 | 三菱電機株式会社 | Decoupling circuit |
| JP2018173411A (en) * | 2013-09-24 | 2018-11-08 | オンテック セキュリティ、エスエル | Security system, method, and program |
-
1986
- 1986-06-06 JP JP8541486U patent/JPS62197082U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018173411A (en) * | 2013-09-24 | 2018-11-08 | オンテック セキュリティ、エスエル | Security system, method, and program |
| WO2015052838A1 (en) * | 2013-10-11 | 2015-04-16 | 三菱電機株式会社 | Decoupling circuit |
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