公开(公告)号：CN107127133A

公开(公告)日：2017-09-05

申请号：CN201710522181.8

申请日：2017-06-30

Applicant: 沈阳工业大学

Inventor： 邢燕好 ,  杨理践 ,  高娜 ,  高松巍 ,  张佳 ,  张青斌 ,  孙自强 ,  桂珺 ,  王宏 ,  王英智

IPC: B06B1/04 ,  G01N29/34

CPC classification number: B06B1/04 ,  B06B2201/54 ,  G01N29/34

Abstract: 本发明属于属于无损检测中超声检测技术领域，涉及一种横波模式电磁超声管道内检测螺旋导波换能器，包括保护外壳、握持结构、行走支撑结构、永磁铁、线圈和轭铁，其特征在于：保护外壳为拱形，保护外壳两侧平面连接有行走支撑结构，一侧行走支撑结构的另一侧连接有握持结构，保护外壳外弧面上侧开有容纳槽，容纳槽内连接有轭铁，轭铁上端面连接有两个永磁铁，永磁铁上端面为弧面，两块永磁铁中间连接有线圈，两块永磁铁的弧面磁性相反。其可以产生沿管道不同方向传播的电磁超声导波，从而实现管道任意方向螺旋导波的产生和任意方向管道缺陷的检测。

公开(公告)号：CN107774552A

公开(公告)日：2018-03-09

申请号：CN201610787897.6

申请日：2016-08-24

Applicant: 哈尔滨零声科技有限公司

Inventor： 李策 ,  李永虔 ,  汪开灿 ,  许霁 ,  蒋川流 ,  屈正扬 ,  翟国富

IPC: B06B1/04

CPC classification number: B06B1/04 ,  B06B2201/54

Abstract: 本发明公开了一种多磁铁结构的电磁超声换能器，包括矩形金属外壳和线圈，所述矩形金属外壳的中部设有导磁性金属填充物，且金属外壳内以所述导磁性金属填充物为中心至少设有两个磁极相对且等夹角设置的永磁铁，金属外壳于所述导磁性金属填充物的正下方设有装置非金属填充物的形槽孔，所述形槽孔内设有非金属填充物；所述金属外壳外部下底面并于非金属填充物的正下方设有线圈。本发明使用多个N极(或S极)相对的条形磁铁或N、S极沿径向方向分布的管状磁铁，增强了垂直于线圈所在平面的磁场的强度，提高了电磁超声体波换能器的换能效率。该换能器结构简单、操作便捷，检测时只需沿试件表面移动换能器即可。

公开(公告)号：CN104142426A

公开(公告)日：2014-11-12

申请号：CN201310169366.7

申请日：2013-05-09

Applicant: 瑞奇外科器械(中国)有限公司 ,  华外医疗器械(上海)有限公司

Inventor： 张亚东 ,  陈启章 ,  姚银峰 ,  方云才 ,  汪炬

IPC: G01R23/12

CPC classification number: G01H13/00 ,  B06B2201/54 ,  B06B2201/55 ,  G01H11/06 ,  H01L41/09 ,  H04R3/04 ,  H04R29/001

Abstract: 本发明提供一种查找换能器谐振频率点的方法及系统，所述方法包括：S1，获取换能器的最小工作频率和最大工作频率；S2，设置一个谐振频率点预设值，以最大工作频率和谐振频率点预设值形成上跳区间，以谐振频率点预设值和最小工作频率形成下跳区间；S3，若换能器电流相位超前电压相位，跳转到上跳区间，否则跳转到下跳区间；S4，以当前上跳区间或当前下跳区间的两个端点值与对应的中间点频率形成新的上跳区间和新的下跳区间；S5，若当前电流相位超前电压相位，则跳转到新的上跳区间，否则跳转到新的下跳区间；重复步骤S4和步骤S5，获取电流相位和电压相位相同时换能器的频率即为谐振频率点。本发明通过跳频查找极大减少了查找次数。

公开(公告)号：US6038925A

公开(公告)日：2000-03-21

申请号：US44929

申请日：1998-03-20

Applicant: Toshihiro Ohtani ,  Hirotsugu Ogi ,  Masahiko Hirao

Inventor： Toshihiro Ohtani ,  Hirotsugu Ogi ,  Masahiko Hirao

IPC: G01N29/04 ,  B06B1/02 ,  B06B1/04 ,  G01N29/24 ,  G10K11/34 ,  H02K3/26 ,  H02K33/12 ,  G01N9/24

CPC classification number: G01N29/2412 ,  B06B1/045 ,  G01N29/2456 ,  G10K11/346 ,  H02K3/26 ,  H02K33/12 ,  B06B2201/54

Abstract: A focusing electromagnetic acoustic transducer is provided which comprises a pair of meander coils, three insulation sheets and a magnet. The meander coils are formed on both surfaces of one of the insulation sheets to be positioned such that the meander coils are coincident with each other, and they are covered with the other insulation sheets. Each of the meander coils comprises a plurality of coil segments wherein intervals between adjacent coil segments sequentially are varied from one end to the other end. The magnet is positioned above the layers consisting the meander coils and insulation sheets. The coil segments of each meander coil are straight lines in parallel with each others, sector shapes on respective circulars having the same center point, or generally circular shapes having the same center point.

Abstract translation: 提供一种聚焦电磁声换能器，其包括一对曲折线圈，三个绝缘片和磁铁。 曲折线圈形成在绝缘片之一的两个表面上，以使得曲折线圈彼此重合，并且被其它绝缘片覆盖。 每个曲折线圈包括多个线圈段，其中相邻线圈段之间的间隔从一端到另一端依次变化。 磁铁位于由曲折线圈和绝缘片组成的层之上。 每个曲折线圈的线圈段是彼此平行的直线，各圆形上的扇形形状具有相同的中心点，或者具有相同中心点的大致圆形形状。

公开(公告)号：US20230160858A1

公开(公告)日：2023-05-25

申请号：US18158967

申请日：2023-01-24

Applicant: ULC Technologies

Inventor： Baiyang Ren

IPC: G01N29/24 ,  B06B1/04 ,  G01N29/04

CPC classification number: G01N29/2412 ,  B06B1/04 ,  G01N29/043 ,  G01N29/041 ,  G01N2291/0427 ,  G01N2291/0422 ,  B06B2201/54

Abstract: An electro-magnetic acoustic transducer (EMAT) system and method for controlling the EMAT system are provided. The system includes an electromagnet array with one or more electromagnets. Each electromagnet includes a magnetic core and a wound coil wrapped around the magnetic core. The electromagnet array generates bias magnetic fields having different patterns when the wound coils are energized differently.

公开(公告)号：US20160061652A1

公开(公告)日：2016-03-03

申请号：US14934904

申请日：2015-11-06

Applicant: REACH SURGICAL INC. ,  China Surgical (Shanghai) Corporation,

Inventor： Yadong ZHANG ,  Qizhang CHEN

IPC: G01H13/00

CPC classification number: G01H13/00 ,  B06B2201/54 ,  B06B2201/55 ,  G01H11/06 ,  H01L41/09 ,  H04R3/04 ,  H04R29/001

Abstract: A system for searching for a resonant frequency of a transducer, comprising: an initializing unit (11), a phase determining unit (12), an interval hopping control unit (13), a hopping interval generating unit (15), a frequency output control unit (17), a phase acquiring unit (16), and a resonant frequency obtaining unit (14). The search range of the interval for the last search can be narrowed by at least half thereof in each frequency hopping, thus allowing for reduced amount of searches.

Abstract translation: 一种用于搜索换能器的谐振频率的系统，包括：初始化单元（11），相位确定单元（12），跳频控制单元（13），跳频间隔产生单元（15），频率输出 控制单元（17），相位获取单元（16）和谐振频率获取单元（14）。 在每次跳频中，上次搜索的间隔的搜索范围可以至少缩小一半，从而允许减少搜索量。

公开(公告)号：US10006804B2

公开(公告)日：2018-06-26

申请号：US14934904

申请日：2015-11-06

Applicant: REACH SURGICAL INC. ,  China Surgical (Shanghai) Corporation

Inventor： Yadong Zhang ,  Qizhang Chen

IPC: G01H13/00 ,  H01L41/09 ,  H04R3/04 ,  H04R29/00 ,  G01H11/06

CPC classification number: G01H13/00 ,  B06B2201/54 ,  B06B2201/55 ,  G01H11/06 ,  H01L41/09 ,  H04R3/04 ,  H04R29/001

Abstract: A system for searching for a resonant frequency of a transducer, comprising: an initializing unit (11), a phase determining unit (12), an interval hopping control unit (13), a hopping interval generating unit (15), a frequency output control unit (17), a phase acquiring unit (16), and a resonant frequency obtaining unit (14). The search range of the interval for the last search can be narrowed by at least half thereof in each frequency hopping, thus allowing for reduced amount of searches.

公开(公告)号：US20180160229A1

公开(公告)日：2018-06-07

申请号：US15828801

申请日：2017-12-01

Applicant: Council of Scientific & Industrial Research

Inventor： P K Dubey ,  V N Ojha ,  Shashank Singh

IPC: H04R3/08 ,  B06B1/02 ,  H03K3/80 ,  G01S13/82 ,  G01N29/04 ,  H03K3/57 ,  H03K17/567

CPC classification number: H04R3/08 ,  B06B1/0215 ,  B06B1/0269 ,  B06B1/045 ,  B06B2201/54 ,  G01N29/041 ,  G01N29/2412 ,  G01N29/4436 ,  G01S7/524 ,  G01S13/82 ,  G01S2007/4069 ,  H03K3/57 ,  H03K3/64 ,  H03K3/72 ,  H03K3/78 ,  H03K3/80 ,  H03K17/567

Abstract: The present invention relates to an electromagnetic acoustic transducer excitation system comprising a tone burst generator, the tone burst generator comprising: an oscillator device configured to produce a radio frequency signal; an analog switch configured to produce an output based on the radio frequency signal produced by the oscillator device and a control signal; a pre-amplifier configured to amplify the output of the analog switch and produce a tone burst output signal; and a control module configured to produce the control signal for providing to the analog switch.

公开(公告)号：EP2988137B1

公开(公告)日：2018-08-15

申请号：EP14793984.7

申请日：2014-05-09

Applicant: Reach Surgical. Inc ,  China Surgical (Shanghai) Corporation

Inventor： ZHANG, Yadong ,  CHEN, Qizhang

IPC: G01H13/00

CPC classification number: G01H13/00 ,  B06B2201/54 ,  B06B2201/55 ,  G01H11/06 ,  H01L41/09 ,  H04R3/04 ,  H04R29/001

Abstract: A system for finding a transducer resonant frequency, comprising: an initialization unit (11), a phase determination unit (12), an interval hopping control unit (13), a hopping interval generation unit (15), a frequency output control unit (17), a phase collection unit (16), and a resonant frequency point acquisition unit (14). Each hop allows a search range to be reduced by at least half of that of the previous interval, thus allowing for reduced amount of searches.

公开(公告)号：EP0867718A3

公开(公告)日：2003-07-09

申请号：EP98105093.3

申请日：1998-03-20

Applicant: EBARA CORPORATION

Inventor： Ohtani, Toshihiro ,  Ogi, Hirotsugu ,  Hirao, Masahiko

IPC: G01N29/04 ,  G01N29/24 ,  B06B1/04

CPC classification number: G01N29/2412 ,  B06B1/045 ,  B06B2201/54 ,  G01N29/2456 ,  G10K11/346 ,  H02K3/26 ,  H02K33/12

Abstract: A focusing electromagnetic acoustic transducer is provided which comprises a pair of meander coils, three insulation sheets and a magnet. The meander coils are formed on both surfaces of one of the insulation sheets to be positioned such that the meander coils are coincident with each other, and they are covered with the other insulation sheets. Each of the meander coils comprises a plurality of coil segments wherein intervals between adjacent coil segments sequentially are varied from one end to the other end. The magnet is positioned above the layers consisting the meander coils and insulation sheets. The coil segments of each meander coil are straight lines in parallel with each others, sector shapes on respective circulars having the same center point, or generally circular shapes having the same center point