JPH01112486U - - Google Patents
Info
- Publication number
- JPH01112486U JPH01112486U JP674288U JP674288U JPH01112486U JP H01112486 U JPH01112486 U JP H01112486U JP 674288 U JP674288 U JP 674288U JP 674288 U JP674288 U JP 674288U JP H01112486 U JPH01112486 U JP H01112486U
- Authority
- JP
- Japan
- Prior art keywords
- gain
- gain control
- reception
- detection distance
- preamplifier
- 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
- 238000001514 detection method Methods 0.000 claims 5
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案装置の実施例の構成を示すブロ
ツク図、第２図は第１図の実施例装置に用いる前
置増幅器の実施例の回路図、第３図は距離に対す
る諸特性を示す図である。
１……送受波器、３……指向性合成部、４……
ＴＶＧ増幅器、５……レンジデーター、Ａ１，Ａ
２……増幅器、ＣＴ１〜ＣＴ４……コントロール
（利得制御）信号、ＰＡ１〜ＰＡＮ……ゲイン切
替型前置増幅器、ＲＦ１〜ＲＦ４……帰還抵抗器
、Ｒｉ……入力抵抗器、ＳＷ１〜ＳＷ４……スイ
ツチ、Ｚ１〜ＺＮ……振動子。
Fig. 1 is a block diagram showing the configuration of an embodiment of the device of the present invention, Fig. 2 is a circuit diagram of an embodiment of the preamplifier used in the embodiment device of Fig. 1, and Fig. 3 shows various characteristics with respect to distance. It is a diagram. 1... Transducer/receiver, 3... Directivity synthesis section, 4...
TVG amplifier, 5... Range data, A 1 , A
2 ...Amplifier, CT1 to CT4 ...Control (gain control) signal, PA1 to PAN...Gain switching preamplifier, RF1 to RF4 ...Feedback resistor, Ri ...Input resistor , SW 1 to SW 4 ... switch, Z 1 to ZN ... vibrator.
Claims (1)
の受波信号の位相又は振幅を制御して合成するこ
とにより受波指向性ビームを形成する超音波探知
装置において；各振動子からの受波信号を個別に
増幅する前置増幅器であつて、利得制御信号によ
り利得が複数段階に制御可能な複数個の前置増幅
器と；各前置増幅器の出力信号を受波指向性合成
した後の出力信号をＴＶＧ増幅するＴＶＧ増幅器
と；複数段階に設定されている最大探知距離を選
択する最大探知距離選択手段と；各前置増幅器の
利得を、選択された最大探知距離が長い場合には
高く、短い場合には低く設定する利得制御信号を
出力する利得制御手段と；を具備することを特徴
とする受信利得可変超音波探知装置。 In an ultrasonic detection device that forms a reception directional beam by controlling and synthesizing the phase or amplitude of reception signals from each transducer of a transducer consisting of a plurality of transducers; A preamplifier that individually amplifies wave signals, the gain of which can be controlled in multiple stages using a gain control signal; a TVG amplifier for TVG amplifying the output signal; a maximum detection distance selection means for selecting a maximum detection distance set in multiple stages; and increasing the gain of each preamplifier when the selected maximum detection distance is long; , gain control means for outputting a gain control signal that is set low when it is short; and; a variable reception gain ultrasonic detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP674288U JPH01112486U (en) | 1988-01-22 | 1988-01-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP674288U JPH01112486U (en) | 1988-01-22 | 1988-01-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01112486U true JPH01112486U (en) | 1989-07-28 |
Family
ID=31211165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP674288U Pending JPH01112486U (en) | 1988-01-22 | 1988-01-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01112486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005067156A3 (en) * | 2003-12-26 | 2005-09-01 | Furuno Electric Co | Microwave frequency converter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467459A (en) * | 1977-11-09 | 1979-05-30 | Kaijo Denki Kk | Gain control system for scanning sonar |
| JPS6234546A (en) * | 1985-08-07 | 1987-02-14 | 株式会社日立製作所 | Ultrasonic receiving wave phasing circuit |
-
1988
- 1988-01-22 JP JP674288U patent/JPH01112486U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5467459A (en) * | 1977-11-09 | 1979-05-30 | Kaijo Denki Kk | Gain control system for scanning sonar |
| JPS6234546A (en) * | 1985-08-07 | 1987-02-14 | 株式会社日立製作所 | Ultrasonic receiving wave phasing circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005067156A3 (en) * | 2003-12-26 | 2005-09-01 | Furuno Electric Co | Microwave frequency converter |
| GB2424331A (en) * | 2003-12-26 | 2006-09-20 | Furuno Electric Co | Microwave Frequency Converter |
| GB2424331B (en) * | 2003-12-26 | 2007-06-27 | Furuno Electric Co | Microwave Frequency Converter |
| US8509684B2 (en) | 2003-12-26 | 2013-08-13 | Furuno Electric Company Limited | Microwave frequency converter |
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