JP2010000374A - 波形発生器が位相反転により音響エネルギを送信するシステムの作動方法 - Google Patents
波形発生器が位相反転により音響エネルギを送信するシステムの作動方法 Download PDFInfo
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Images
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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- G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
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- G01S7/5208—Constructional features with integration of processing functions inside probe or scanhead
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
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- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
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- G01S7/52019—Details of transmitters
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
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Abstract
【解決手段】波形発生器が位相反転により音響エネルギを送信するシステムの作動方法において、(a)高状態及び低状態を有する第1の単極性送信波形を発生し、(b)前記高状態及び前記低状態を有する第2の単極性送信波形を発生し、(c)前記低状態で前記第1の単極性送信波形を開始し、(d)前記高状態で前記第2の単極性送信波形を開始する。
【選択図】図1
Description
図1には、超音波システム10の1実施例のブロック図が示されている。システム10は、受信回路14及びイメージプロセッサ16を有するベースユニット12を含む。受信回路14は、ケーブル22を介して、異なったタイプのトランスジューサプローブ18,20と接続するように作動可能である。複数の受信回路14は、要素24のアレイからの信号を処理するために、プローブ18,20と電気的に接続可能である。付加的に、異なった、乃至、少数の構成要素をシステム10内に設けてもよく、例えば、1タイプのトランスジューサプローブ18,20だけを設けてもよい。
トランスジューサ要素24は、送信チャネルを、上述のプローブ18,20のどちらか、又は異なった受信回路で使うための他のプローブのうちの受信チャネルから分離するのに使われる。単一要素トランスジューサの場合、リニアアレイ、又は、限定された、又は、プローブ内に送信又は受信回路のないアレイは有用であるが、時分割多重プローブ18の場合に上述したような、プローブ内に挿入された送信、及び/又は、受信回路の少なくとも一部分を有する多次元トランスジューサアレイの場合には、送信チャネルと受信チャネルとを分離するトランスジューサ要素24を用いるのは特に有用である。完全固定の多次元トランスジューサアレイは、多数の送信及び受信チャネルを必要とする。送信又は受信回路をプローブ内に配設して、多重化することによって、プローブ18からベースユニット12へのケーブル22又はチャネルの数を最小化することができる。しかし、その際、送信回路及び受信回路は狭いスペース内に共存し、受信回路を送信回路の高電圧から分離するのは難しい。使用電圧の200ボルトに耐えられるスイッチのような高電圧スイッチは、マルチプレクサのような、他の受信回路と統合するのは難しい。高電圧送信及び受信スイッチングが、トランスジューサ要素に代えて、伝送チャネルを受信チャネルから分離するのに使われる。
種々のトランスジューサが送信及び受信路、プローブ、及び、上述の受信回路のどれかで使うことができる。時分割多重を使って完全にサンプリングし、送信路及び受信路の要素ベースのアイソレーションを行うための、そのような多次元トランスジューサアレイの例が図8−11に示されている。時分割多重により、チャネルカウント又はケーブル22の数を、ベースユニット12によって実行されるビーム成形を制限せずに減らすことができる。送信及び受信路に対して、対向電極80及び82の別個の信号トレース又は対向電極80及び82の接続により、送信及び受信スイッチングの電力消費なしに、プローブ18内に送信及び受信回路を集積することができる。多次元トランスジューサの種々のアスペクトを、後述の実施例の他のアスペクトとは無関係に使うことができ、例えば、時分割多重又はプローブ18内での他の回路集積をせずに、特定の要素スペースを使うことができる。
18 プローブ
22 ケーブル
24 トランスジューサ要素
26 マルチプレクサ
37 時間利得制御回路
62 送信路
64 受信路
80 第1の電極
82 第2の電極
84 波形発生器
90,92 ダイオード
86 トランジスタ
Claims (4)
- 波形発生器が位相反転により音響エネルギを送信するシステムの作動方法において、
(a)高状態及び低状態を有する第1の単極性送信波形を発生し、
(b)前記高状態及び前記低状態を有する第2の単極性送信波形を発生し、
(c)前記低状態で前記第1の単極性送信波形を開始し、
(d)前記高状態で前記第2の単極性送信波形を開始する
ことを特徴とする方法。 - 更に、
(e)前記高状態で前記第1の単極性送信波形を終了し、
(f)前記低状態で前記第2の単極性送信波形を終了する
請求項1記載の方法。 - (a)高状態及び低状態を有する第1の単極性送信波形を発生し、
(b)前記高状態及び前記低状態を有する第2の単極性送信波形を発生し、
(c)前記低状態で前記第1の単極性送信波形を開始し、
(d)前記高状態で前記第2の単極性送信波形を開始し、
トランスジューサ要素(24)に供給される送信波形の和がほぼゼロであるように前記第1の単極性送信波形及び前記第2の単極性送信波形を発生する
請求項1記載の方法。 - (c)前記低状態で第1の単極性送信波形を開始する際、ゼロ電圧で前記第1の単極性送信波形を開始し、(d)前記高状態で第2の単極性送信波形を開始する際、正の電圧で前記第2の単極性送信波形を開始する
請求項1記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/185,404 US6806623B2 (en) | 2002-06-27 | 2002-06-27 | Transmit and receive isolation for ultrasound scanning and methods of use |
US10/185404 | 2002-06-27 |
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JP2003177297A Division JP4395332B2 (ja) | 2002-06-27 | 2003-06-20 | 超音波処理用の送信及び受信アイソレーションシステムおよび超音波処理用の送信及び受信アイソレーションシステムの作動方法 |
Publications (2)
Publication Number | Publication Date |
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JP2010000374A true JP2010000374A (ja) | 2010-01-07 |
JP5692976B2 JP5692976B2 (ja) | 2015-04-01 |
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JP2003177297A Expired - Lifetime JP4395332B2 (ja) | 2002-06-27 | 2003-06-20 | 超音波処理用の送信及び受信アイソレーションシステムおよび超音波処理用の送信及び受信アイソレーションシステムの作動方法 |
JP2009190723A Expired - Lifetime JP5692976B2 (ja) | 2002-06-27 | 2009-08-20 | 波形発生器が位相反転により音響エネルギを送信するシステムの作動方法 |
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Country Status (4)
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US (1) | US6806623B2 (ja) |
JP (2) | JP4395332B2 (ja) |
CN (2) | CN100450442C (ja) |
DE (1) | DE10328827B4 (ja) |
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Also Published As
Publication number | Publication date |
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JP5692976B2 (ja) | 2015-04-01 |
DE10328827A1 (de) | 2004-01-29 |
JP4395332B2 (ja) | 2010-01-06 |
CN100557460C (zh) | 2009-11-04 |
US20040002435A1 (en) | 2004-01-01 |
CN1478440A (zh) | 2004-03-03 |
JP2004089694A (ja) | 2004-03-25 |
DE10328827B4 (de) | 2010-06-02 |
CN101051084A (zh) | 2007-10-10 |
CN100450442C (zh) | 2009-01-14 |
US6806623B2 (en) | 2004-10-19 |
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