JP5081430B2 - 超音波検査用デジタル対数増幅器 - Google Patents
超音波検査用デジタル対数増幅器 Download PDFInfo
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- JP5081430B2 JP5081430B2 JP2006298910A JP2006298910A JP5081430B2 JP 5081430 B2 JP5081430 B2 JP 5081430B2 JP 2006298910 A JP2006298910 A JP 2006298910A JP 2006298910 A JP2006298910 A JP 2006298910A JP 5081430 B2 JP5081430 B2 JP 5081430B2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/12—Analogue/digital converters
- H03M1/1235—Non-linear conversion not otherwise provided for in subgroups of H03M1/12
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02854—Length, thickness
Description
12 パルス発生回路
14 トランスデューサ
16 検査対象物
18 超音波音響波
20 オシロスコープ
22 欠陥
24 後壁
26 初期パルス
28 反射波
100 デジタル対数増幅器(DLA)
102 入力
104 増幅器
106 A/D変換器
110 減衰器
112 増幅器
114 A/D変換器
116 減衰パス
118 ロジック回路
Claims (9)
- 超音波音響波(18)を欠陥を有する検査対象物(16)内に伝搬させ、前記反射波を受け、該反射波を電気信号に変換し、前記欠陥からの反射波形とインターフェース信号とを含む超音波アナログ信号(102)を出力するトランスデューサ(14)と、
該トランスデューサ(14)にパルスを送信するパルス発生回路(12)と、
反射波を表す前記超音波アナログ信号(102)を処理するデジタル対数増幅器(100)であって、
前記アナログ信号(102)を所望のレベルまで増幅する第1の増幅器手段(104)を含む、少なくとも1つの減衰されない処理パスと、
前記増幅されたアナログ信号をデジタルサンプリングして、前記アナログ信号を前記アナログ信号のデジタイズされた表現に変換する変換器手段(106)と、
前記アナログ信号(102)を減衰させる減衰手段(110)と、前記減衰されたアナログ信号(102)を所望のレベルまで増幅する第2の増幅器手段(112)と、前記減衰され、増幅されたアナログ信号(102)をデジタルサンプリングして、前記アナログ信号のデジタイズされた表現を形成する変換器手段(114)とをそれぞれが含む少なくとも1つの減衰処理パス(116)と、
前記複数のデジタイズされた信号の中から、線形であって、前記複数のデジタイズされた信号の中の最大の振幅を有するデジタイズされた信号を1つ選択するロジック回路手段(118)と、
複数の選択された、デジタイズされた信号を記憶する記憶手段と、
前記記憶された複数のデジタイズされた信号を結合して、連続的な線形デジタル波形を形成する結合手段とを備えるデジタル対数増幅器(100)と、
前記連続的な線形デジタル波形から前記インターフェース信号を除去した信号を表示するディスプレイと、
を含み、
前記少なくとも1つの減衰パスの前記減衰手段(110)が減衰器(110)であり、前記減衰パス(116)のそれぞれが、様々な減衰値の減衰器(110)を有する、超音波探傷検査設備(10)。 - 前記結合手段が、前記連続的な線形デジタル波形の振幅を広いダイナミックレンジにわたって圧縮するために、前記複数のデジタイズされた信号を対数尺度に変換するよう構成された一連のロジック回路である、請求項1記載の超音波探傷検査設備(10)。
- 前記アナログ信号が、周波数の低い信号であり、前記変換器手段のデジタルサンプリングレートが実質的に50MHzである、請求項1または2に記載の超音波探傷検査設備(10)。
- 前記アナログ信号が、周波数の高い信号であり、前記変換器手段のデジタルサンプリングレートが実質的に100MHzである、請求項1または2に記載の超音波探傷検査設備(10)。
- 前記変換器手段(106、114)が14ビットアナログデジタル信号変換器であり、前記ロジック回路手段の出力信号のダイナミックレスポンスレンジは20ビットより大きい、請求項1乃至4のいずれかに記載の超音波探傷検査設備(10)。
- 前記第1の及び第2の増幅器手段(104、112)のそれぞれの利得が、所定のアナログ出力信号レベルレンジに適する所定のレベルに設定される、請求項1乃至5のいずれかに記載の超音波探傷検査設備(10)。
- 前記結合手段から出力される前記反射波のデジタル表現は、前記第1の及び第2の増幅器手段(104、112)のそれぞれのレスポンスレンジより広いダイナミックレスポンスレンジを有する、請求項1乃至6のいずれかに記載の超音波探傷検査設備(10)。
- 前記ロジック回路手段(118)は、所定のサンプリングレートによるサンプリングにより発生した第1及び第2のサンプリング点(N1、N2)の内の前記第1のサンプリング点(N1)が所定のレンジ内にあるかを判定し、前記第2のサンプリング点(N2)において前記複数のデジタイズされた信号の中の最大の振幅を有するデジタイズされた信号を1つ選択する、請求項1乃至7のいずれかに記載の超音波探傷検査設備(10)。
- 前記様々な減衰値が−6dB刻みである、請求項1乃至8のいずれかに記載の超音波探傷検査設備(10)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/266,854 | 2005-11-04 | ||
US11/266,854 US7389692B2 (en) | 2005-11-04 | 2005-11-04 | Digital log amplifier for ultrasonic testing |
Publications (2)
Publication Number | Publication Date |
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JP2007129718A JP2007129718A (ja) | 2007-05-24 |
JP5081430B2 true JP5081430B2 (ja) | 2012-11-28 |
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Application Number | Title | Priority Date | Filing Date |
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JP2006298910A Active JP5081430B2 (ja) | 2005-11-04 | 2006-11-02 | 超音波検査用デジタル対数増幅器 |
Country Status (5)
Country | Link |
---|---|
US (2) | US7389692B2 (ja) |
JP (1) | JP5081430B2 (ja) |
CN (1) | CN1975410B (ja) |
DE (1) | DE102006052168A1 (ja) |
GB (1) | GB2432062B (ja) |
Families Citing this family (11)
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US8001841B2 (en) * | 2005-10-14 | 2011-08-23 | Olympus Ndt | Ultrasonic fault detection system using a high dynamic range analog to digital conversion system |
GB0717031D0 (en) * | 2007-08-31 | 2007-10-10 | Raymarine Uk Ltd | Digital radar or sonar apparatus |
US8386209B2 (en) * | 2008-06-20 | 2013-02-26 | University Of Limerick | Testing system |
US8408061B2 (en) * | 2009-12-02 | 2013-04-02 | Olympus Ndt | Sequentially fired high dynamic range NDT/NDI inspection device |
US9236837B2 (en) | 2011-08-25 | 2016-01-12 | Infineon Technologies Ag | System and method for low distortion capacitive signal source amplifier |
DE102012108787A1 (de) * | 2011-09-29 | 2013-04-04 | Ge Sensing & Inspection Technologies Gmbh | Verfahren zur Verarbeitung eines Ultraschallanalogsignals, digitale Signalverarbeitungseinheit und Ultraschalluntersuchungseinrichtung |
US8638249B2 (en) * | 2012-04-16 | 2014-01-28 | Infineon Technologies Ag | System and method for high input capacitive signal amplifier |
JP5669023B2 (ja) * | 2012-05-23 | 2015-02-12 | 新日鐵住金株式会社 | 超音波探触子の探傷感度調整方法 |
CN102759689A (zh) * | 2012-06-18 | 2012-10-31 | 广东电网公司电力科学研究院 | 一种突发性/大动态范围局放超声信号的测量装置及方法 |
CN109781861B (zh) * | 2017-11-10 | 2021-11-23 | 国核电站运行服务技术有限公司 | 电子开关式主/辅多通道超声波采集系统及电子设备 |
US11359918B2 (en) | 2020-07-24 | 2022-06-14 | Olympus Scientific Solutions Americas Corp. | Ultrasonic testing with single shot processing |
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-
2005
- 2005-11-04 US US11/266,854 patent/US7389692B2/en active Active
-
2006
- 2006-11-02 GB GB0621842A patent/GB2432062B/en active Active
- 2006-11-02 JP JP2006298910A patent/JP5081430B2/ja active Active
- 2006-11-02 DE DE102006052168A patent/DE102006052168A1/de not_active Withdrawn
- 2006-11-06 CN CN2006101728609A patent/CN1975410B/zh active Active
-
2008
- 2008-04-17 US US12/104,871 patent/US7506546B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20070101816A1 (en) | 2007-05-10 |
CN1975410B (zh) | 2011-06-15 |
DE102006052168A1 (de) | 2007-05-10 |
JP2007129718A (ja) | 2007-05-24 |
US7506546B2 (en) | 2009-03-24 |
US20080202244A1 (en) | 2008-08-28 |
GB2432062A (en) | 2007-05-09 |
GB0621842D0 (en) | 2006-12-13 |
CN1975410A (zh) | 2007-06-06 |
GB2432062B (en) | 2011-01-05 |
US7389692B2 (en) | 2008-06-24 |
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