JP7078790B2 - 1d超音波変換器ユニット - Google Patents
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- 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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/262—Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
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- G—PHYSICS
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- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/346—Circuits therefor using phase variation
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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
- B06B1/0622—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 on one surface
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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- G—PHYSICS
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- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
- G01N29/348—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with frequency characteristics, e.g. single frequency signals, chirp signals
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- 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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
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Description
さらなる超音波変換器が、欧州特許出願公開第0940801号明細書、並びに、Eric Konetzke等著「Phased array transducer for emitting 40 kHz air-coupled ultrasound without grating lobes」(IEEE International Ultrasonic Symposium, 2015年, 1~4頁)、及び、Jaeger等著「Air-coupled 40-kHz ultrasonic 2D-phased array based on a 3D-printed waveguide structure」(IEEE International Ultrasonic Symposium, 2017年, 1~4頁)、及び、Takahashi等著「Ultrasonic phased array sensor for electrical travel aids for visually impaired people」(Proceedings of the spie -The international society for optical engineering spie - vertical-cavity surface-emitting lasers XIII,第6794巻,2007年12月3日 67943V頁, ISSN: 0277-786X)、及び、Manufactoring Murata「Ultrasonic Sensor Application Manual」(Cat. No. S15E-5,2009年1月1日, URL;https://cdn-reichelt.de/documents/datenblatt/8400/ultraschall%20sensor.pdf, 3頁)から知られている。
Claims (13)
- 物体、輪郭又は間隔を検出するための少なくとも3つの超音波変換器(12)と制御ユニットとを含む1D超音波変換器ユニット(10)であって、
・前記制御ユニット(14)は、各超音波変換器(12)を個別に駆動制御するように設計されており、
・各超音波変換器(12)はそれぞれ、ハウジング(22)と、前記ハウジング(22)内に配置されている圧電体(18)と、音波を気体状の媒質へ分離するための前記ハウジング(22)の開放端部に配置されている音響分離層(26)とを有しており、
・各超音波変換器(12)は、同一の周波数を放射し及び/又は受け取るように設計されており、
・前記超音波変換器(12)の前記周波数は、20kHz~400kHzの範囲にあり、
・互いに直接的に隣接する2つの超音波変換器(12)はそれぞれ、最大10cm又は最大5cm又は最大2cmの、前記音響分離層(26)の中心から前記音響分離層(26)の中心までの間隔(A1)を有しており、
・前記1D超音波変換器ユニット(10)は、超音波変換器(12)毎に1つの音響チャネル(36)を有しており、
・各音響チャネル(36)は、第1の断面を有する入口開口部(38)と第2の断面を有する出口開口部(40)とを有しており、
・各音響分離層(26)には、厳密に前記複数の入口開口部(38)のうちの1つが割り当てられており、
・前記出口開口部は、線に沿って配置されており、
・前記複数の出口開口部(40)のうちの1つの出口開口部の中心から、直接的に隣接する出口開口部(40)の中心までの間隔(A2)は、最大で、気体状の媒質における波長に相当し、又は、最大で、気体状の媒質における波長の半分に相当し、
・直接的に隣接する2つの出口開口部(40)間の前記間隔(A2)はそれぞれ、対応する前記入口開口部(38)同士の前記間隔(A1)よりも短く、
・前記入口開口部(38)の面積に対する前記出口開口部(40)の面積の比は、0.30~1.2の間の値を有しており、
・各音響チャネル(36)は、少なくとも、前記入口開口部(38)の直径の長さを有している、
1D超音波変換器ユニット(10)において、
・前記超音波変換器(12)は、共通の担体構造(16)内に入れられており、かつ、すべての音響チャネル(36)の前記出口開口部(40)は、湾曲した面(F1)にあり、又は、すべての音響チャネル(36)の前記出口開口部(40)は、共通の平坦な面(E1)にあり、
各超音波変換器(12)の前記ハウジング(22)は、円筒形の金属カップ(24)を含み、
各超音波変換器(12)の前記ハウジング(22)は、前記分離層(26)と前記金属カップ(24)との間に音響減結合層(28)を有している、
ことを特徴とする1D超音波変換器ユニット(10)。 - 前記入口開口部(38)の面積に対する前記出口開口部(40)の面積の比は、0.35~1.0の間又は0.4~0.8の間の値を有している、
請求項1に記載の1D超音波変換器ユニット(10)。 - 各超音波変換器(12)の前記音響分離層(26)から、割り当てられている前記音響チャネル(36)の前記出口開口部(40)までの長さ(L1)は、気体状の媒質における波長の8分の1の整数倍又は気体状の媒質における半波長の整数倍である、
請求項1又は2に記載の1D超音波変換器ユニット(10)。 - 各音響チャネル(36)は、金属若しくはプラスチックから成る、又は、金属若しくはプラスチックを含む、
請求項1から3までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 各超音波変換器(12)は、はじめは、前記音響分離層(26)と共に、割り当てられている前記入口開口部(38)内に突出する、
請求項1から4までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 各音響チャネル(36)は、割り当てられている前記超音波変換器(12)の少なくとも一部を正確に適合して収容する、
請求項5に記載の1D超音波変換器ユニット(10)。 - 各超音波変換器(12)の前記ハウジング(22)は、少なくとも5mmの直径(D7)を有している、
請求項1から6までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 要素の数が増加し、4個又は5個又は6個又は8個又は16個の超音波変換器が線上に位置する、
請求項1から7までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 前記各音響チャネル(36)は、同一の前記長さ(L1)を有している、
請求項1から8までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 前記超音波変換器(12)は1つの共通の平坦な面に位置し、これによって、前記各音響チャネル(36)は、異なる長さ(L1)を有する、
請求項1から9までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 前記音響分離層(26)の表面、前記金属カップ(24)の縁部及びそれらの間に配置されている、個々の各超音波変換器(12)の前記音響減結合層(28)は、それぞれ平坦な面に展開する、
請求項1に記載の1D超音波変換器ユニット(10)。 - 各超音波変換器(12)は、基準電位にある電磁シールド(20)を有している、
請求項1から11までのいずれか1項に記載の1D超音波変換器ユニット(10)。 - 各超音波変換器(12)の前記ハウジング(22)は、少なくともIP40保護等級に従って形成されている、
請求項1から12までのいずれか1項に記載の1D超音波変換器ユニット(10)。
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DE102018005540.0 | 2018-07-13 | ||
DE102018005540.0A DE102018005540B4 (de) | 2018-07-13 | 2018-07-13 | 1D-Ultraschallwandler-Einheit |
PCT/EP2019/000162 WO2020011387A1 (de) | 2018-07-13 | 2019-05-23 | 1d-ultraschallwandler-einheit |
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US (1) | US11869479B2 (ja) |
EP (1) | EP3807632B1 (ja) |
JP (1) | JP7078790B2 (ja) |
KR (1) | KR102516698B1 (ja) |
CN (1) | CN112469999A (ja) |
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DE102018006127B4 (de) * | 2018-08-03 | 2021-07-08 | Pepperl+Fuchs Ag | 1D-Ultraschallwandler-Einheit für die Materialerfassung |
CN111536910A (zh) * | 2020-04-28 | 2020-08-14 | 吉林工程技术师范学院 | 一种基于超声波的粮食输送机物料横截面积检测计算方法 |
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JP2002186617A (ja) | 2000-12-20 | 2002-07-02 | Aloka Co Ltd | 振動素子アレイの製造方法及び2次元超音波探触子 |
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JP2018075286A (ja) | 2016-11-11 | 2018-05-17 | セイコーエプソン株式会社 | 超音波ユニット、超音波装置、及び超音波ユニットの制御方法 |
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EP0928640A1 (en) * | 1998-01-12 | 1999-07-14 | Imra Europe S.A. | Ultrasonic transducer with a horn and phased array using such ultrasonic transducers |
DE19809206C2 (de) | 1998-03-04 | 2001-02-15 | Siemens Ag | Ultraschallwandlereinrichtung mit Zentrier-Formteil |
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JP2001305222A (ja) * | 2000-04-26 | 2001-10-31 | Yazaki Corp | 電子走査式超音波物体検出装置及びその方法 |
DE102007039598B4 (de) * | 2006-09-05 | 2010-07-22 | DENSO CORPORATION, Kariya-shi | Ultraschallsensor und Hindernis-Detektorvorrichtung |
EP2144715A1 (de) | 2007-05-04 | 2010-01-20 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Ultraschallwandler-array für anwendungen in gasförmigen medien |
US20140283611A1 (en) | 2013-03-25 | 2014-09-25 | Jason HABERMEHL | System and a method of adaptive focusing in a phased array ultrasonic system |
US9080951B2 (en) | 2013-03-29 | 2015-07-14 | Olympus Scientific Solutions Americas Inc. | Method and system of using 1.5D phased array probe for cylindrical parts inspection |
NL1040501C2 (en) * | 2013-11-15 | 2015-05-19 | Qsources Bvba | Device for creating a sound source. |
FR3022634B1 (fr) * | 2014-06-19 | 2016-07-15 | Commissariat Energie Atomique | Procede de controle non destructif et sans contact d'un objet par sondage, programme d'ordinateur et dispositif de sondage correspondants |
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DE102018005540B4 (de) | 2022-06-09 |
CN112469999A (zh) | 2021-03-09 |
EP3807632C0 (de) | 2024-01-10 |
US11869479B2 (en) | 2024-01-09 |
DE102018005540A1 (de) | 2020-01-16 |
US20210134261A1 (en) | 2021-05-06 |
WO2020011387A1 (de) | 2020-01-16 |
KR20210027398A (ko) | 2021-03-10 |
JP2021524042A (ja) | 2021-09-09 |
EP3807632B1 (de) | 2024-01-10 |
KR102516698B1 (ko) | 2023-03-30 |
EP3807632A1 (de) | 2021-04-21 |
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