JPH0485284U - - Google Patents
Info
- Publication number
- JPH0485284U JPH0485284U JP12652090U JP12652090U JPH0485284U JP H0485284 U JPH0485284 U JP H0485284U JP 12652090 U JP12652090 U JP 12652090U JP 12652090 U JP12652090 U JP 12652090U JP H0485284 U JPH0485284 U JP H0485284U
- Authority
- JP
- Japan
- Prior art keywords
- circuit group
- output
- adder
- signal
- delay circuit
- 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
- 230000003111 delayed effect Effects 0.000 claims 2
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measuring Volume Flow (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例の指向性ビーム出力
回路のブロツク図、第２図は指向性ビームＢＦ１
、ＢＦ２、ＢＦ３の波形図、第３図は指向性ビー
ム出力回路の従来例のブロツク図である。
１１〜１６……振動氏、２１〜２６……増幅器
、３１〜３６……第１の遅延回路、４１〜４６…
…第２の遅延回路、５１〜５３……反転回路、６
……第１の加算器、７……第２の加算器、８……
第１の絶対値回路、９……第２の絶対値回路、１
０……減算器、１１……整流回路、ＢＦ１，ＢＦ
２，ＢＦ３……指向性ビーム。
Figure 1 is a block diagram of a directional beam output circuit according to an embodiment of the present invention, and Figure 2 is a block diagram of a directional beam output circuit according to an embodiment of the present invention.
, BF2, and BF3. FIG. 3 is a block diagram of a conventional example of a directional beam output circuit. 1 1 to 1 6 ... Mr. Vibration, 2 1 to 2 6 ... Amplifier, 3 1 to 3 6 ... First delay circuit, 4 1 to 4 6 ...
... Second delay circuit, 5 1 to 5 3 ... Inversion circuit, 6
...First adder, 7... Second adder, 8...
First absolute value circuit, 9...Second absolute value circuit, 1
0... Subtractor, 11... Rectifier circuit, BF1, BF
2, BF3...Directional beam.
Claims (1)
波信号を合成し、指向性のあるビームを出力する
指向性ビーム出力回路であつて、 各振動子からの受波信号を増幅する、振動子毎
の増幅器と、 各受波信号の位相が全て一致するように前記増
幅器の出力信号を遅延する第１の遅延回路群と、 第１の遅延回路群の各出力信号と前記増幅器の
遅延されなかつた出力信号を合成する第１の加算
器と、 第１の加算器の出力信号を整流する第１の絶対
値回路と、 前記増幅器の出力信号を遅延する第２の遅延回
路群と、 第２の遅延回路群の出力信号のうち一部の出力
信号を反転する反転回路群と、 前記反転回路群の出力信号と、第２の遅延回路
群の出力信号のうち前記反転回路群によつて反転
されなかつた出力信号と、前記増幅器の出力信号
のうち、第２の遅延回路群で遅延されなかつた出
力信号を合成する第２の加算器と、 第２の加算器の出力信号を整流する第２の絶対
値回路と、 第１および第２の絶対値回路の出力信号の差信
号を整流する回路とを有し、 第２の遅延回路群は、第１の加算器で合成され
た信号と第２の加算器で合成された信号に時間差
が生じないように振動子の受波信号を遅延し、ま
た前記反転回路群は両端の振動子を結ぶ直線に垂
直な方向の受波信号の第２の加算器による合成が
０となるように、第２の遅延回路群の出力に接続
されている指向性ビーム出力回路。[Claims for Utility Model Registration] A directional beam output circuit that combines received signals from a plurality of oscillators arranged on a circular arc and outputs a directional beam, an amplifier for each transducer that amplifies the received signal; a first delay circuit group that delays the output signal of the amplifier so that the phases of the received signals all match; and each of the first delay circuit groups. a first adder for combining an output signal with an undelayed output signal of the amplifier; a first absolute value circuit for rectifying the output signal of the first adder; and a first absolute value circuit for delaying the output signal of the amplifier. a second delay circuit group; an inverting circuit group for inverting a part of the output signals of the second delay circuit group; and an inverting circuit group for inverting a part of the output signals of the second delay circuit group; a second adder that combines an output signal that has not been inverted by the inverting circuit group and an output signal that has not been delayed by the second delay circuit group among the output signals of the amplifier; The second delay circuit group includes a second absolute value circuit that rectifies the output signal of the adder, and a circuit that rectifies the difference signal between the output signals of the first and second absolute value circuits. The received signal of the transducer is delayed so that there is no time difference between the signal synthesized by the adder and the signal synthesized by the second adder, and the inverting circuit group A directional beam output circuit connected to the output of the second delay circuit group so that the combination of the received signals in the vertical direction by the second adder becomes zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990126520U JP2519327Y2 (en) | 1990-11-30 | 1990-11-30 | Directional beam output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990126520U JP2519327Y2 (en) | 1990-11-30 | 1990-11-30 | Directional beam output circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0485284U true JPH0485284U (en) | 1992-07-24 |
| JP2519327Y2 JP2519327Y2 (en) | 1996-12-04 |
Family
ID=31874071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990126520U Expired - Fee Related JP2519327Y2 (en) | 1990-11-30 | 1990-11-30 | Directional beam output circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2519327Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010158374A (en) * | 2009-01-08 | 2010-07-22 | Konica Minolta Medical & Graphic Inc | Ultrasonic diagnostic apparatus |
| CN111247736A (en) * | 2017-10-23 | 2020-06-05 | 通用电气公司 | System and method for preventing demagnetization of permanent magnets in electrical machines |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02164347A (en) * | 1988-12-16 | 1990-06-25 | Aloka Co Ltd | Ultrasonic diagnostic device |
-
1990
- 1990-11-30 JP JP1990126520U patent/JP2519327Y2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02164347A (en) * | 1988-12-16 | 1990-06-25 | Aloka Co Ltd | Ultrasonic diagnostic device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010158374A (en) * | 2009-01-08 | 2010-07-22 | Konica Minolta Medical & Graphic Inc | Ultrasonic diagnostic apparatus |
| CN111247736A (en) * | 2017-10-23 | 2020-06-05 | 通用电气公司 | System and method for preventing demagnetization of permanent magnets in electrical machines |
| CN111247736B (en) * | 2017-10-23 | 2023-11-21 | 通用电气公司 | System and method for preventing permanent magnet demagnetization in an electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2519327Y2 (en) | 1996-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R323111 |
|
| R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
| R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R323111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |