JPS5994990A - Ultrasonic wave probe - Google Patents
Ultrasonic wave probeInfo
- Publication number
- JPS5994990A JPS5994990A JP57204999A JP20499982A JPS5994990A JP S5994990 A JPS5994990 A JP S5994990A JP 57204999 A JP57204999 A JP 57204999A JP 20499982 A JP20499982 A JP 20499982A JP S5994990 A JPS5994990 A JP S5994990A
- Authority
- JP
- Japan
- Prior art keywords
- ultrasonic
- phase
- ultrasonic wave
- probe
- oscillator
- 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.)
- Pending
Links
- 239000000523 sample Substances 0.000 title claims abstract description 20
- 230000005284 excitation Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 21
- 238000012856 packing Methods 0.000 abstract 3
- 230000001131 transforming effect Effects 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
- B06B1/0611—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 in a pile
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、非破壊検査や医療診断等に用いられる超音
波探触子に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ultrasonic probe used for nondestructive testing, medical diagnosis, and the like.
従来の仁の棟の超音波探触子は１例えば第１図に示すよ
うに、１ケの平板状の超音波振動子は）の一方の音響放
射面（２）上に、バッキング材（３）ヲ設け。A conventional Jin-no-ridge ultrasonic probe has a backing material (3) on one acoustic radiation surface (2) of a flat ultrasonic transducer (1), as shown in Figure 1, for example. ) is provided.
他方の音書放射面（２）上に、一層あるいは多層の音舎
インピーダンス変成層１４） を設けて構成されていた
。It was constructed by providing a single or multi-layer impedance transformation layer 14) on the other sound radiation surface (2).
（１）
卵液 検査や医療診ｍｌにおいて、被検材内へ効率よく
超音波を送受信する超音ｔＩｉ！探触子が要求されるこ
とは言うまでもない。し力為し、従来のこの棟の超音波
探触子では、超音波振動子は）により励振された超音波
は２Ｍ検材方向のみでなく、バッキング材（３）方向へ
も伝ばんする。すなわち、従来のこの柚の超音波探触子
では、バッキング材１３）内へ放射された音響パワーの
煩失を避けられず、このため効率が悪い欠点がめった。(1) Ultrasound tIi, which efficiently transmits and receives ultrasonic waves into the test material during egg fluid examinations and medical consultations! Needless to say, a probe is required. However, in the conventional ultrasonic probe of this building, the ultrasonic waves excited by the ultrasonic transducer () propagate not only in the 2M inspection direction but also in the backing material (3) direction. That is, in the conventional ultrasonic probe of this type, the loss of acoustic power radiated into the backing material 13) could not be avoided, and as a result, the efficiency was often low.
この発明は、２ケの超音波振動子山を、４分つ１枝長離
して配置し、一方の超音波探触子山・の励振及び受信信
号の位相と、他方の超音波振動子ｉｌｌの励振及び受信
信号の位相との間に９０度の位相差を与え、超音波が被
検材方向へは同相でバッキング材方向へは逆相で送受信
されるようにして。In this invention, two ultrasonic transducer peaks are arranged one branch length apart by a quarter, and the phases of the excitation and reception signals of one ultrasonic probe peak and the phase of the ultrasonic transducer ill of the other ultrasonic probe peak are adjusted. A phase difference of 90 degrees is provided between the phases of the excitation and reception signals, so that the ultrasonic waves are transmitted and received in the same phase toward the specimen material and in opposite phase toward the backing material.
上述した従来の欠点を解決したものであり、ＰＬ下第２
図に示す一実施例を用いて詳細に説明する。This solution solves the above-mentioned drawbacks of the conventional technology, and it is
This will be explained in detail using an example shown in the drawings.
第２図において、１１）は従来と同様の平板状の２ケの
超音波振動子であシ、超音肢蛋動子山は、厚さが４分の
ｌ波長の中間層１５）をはさんで、各超音（２）
岐蚕動子（１）の音響放射面（２）どうしが対向するよ
うにして積重ねて配置している。In Fig. 2, 11) are two flat-plate ultrasonic transducers similar to the conventional one, and the ultrasonic limb transducers include an intermediate layer 15) with a thickness of 1/4 wavelength. The ultrasonic waves (2) and the sound emitting surfaces (2) of the ultrasonic waves (1) are stacked one on top of the other so that they face each other.
（３）は従来と同様のバッキング材である。（４）は被
検材と超音波振動子山との間に設けた従来と同様の音響
インピーダンス変成層である。(3) is a backing material similar to the conventional one. (4) is an acoustic impedance modification layer similar to the conventional one provided between the test material and the ultrasonic transducer mountain.
さて、この発明に係る超音波探触子において。Now, regarding the ultrasonic probe according to the present invention.
被検材に近り方の超音波振動子山の＠振信号の位相を、
バッキング材（３）に近り方の超音波振動子山の励振信
号の位相に対して９０度遅らせて励振すれば、各超音波
振動子山により励振された超音波は、２ケの超音波振動
子山間に厚さが４分のｌＲ長の中間層１５）を設けてい
るため、被検材内には同相で伝ばんする。The phase of the @oscillation signal of the ultrasonic transducer mountain near the specimen material,
If the backing material (3) is excited with a delay of 90 degrees with respect to the phase of the excitation signal of the ultrasonic transducer peak nearer to the backing material (3), the ultrasonic waves excited by each ultrasonic transducer peak will become two ultrasonic waves. Since the intermediate layer 15) with a thickness of 4/1R is provided between the vibrator peaks, the waves propagate in the same phase into the test material.
一方、バッキング材（３）内には逆相で伝ばんする。On the other hand, it propagates in the backing material (3) in a reverse phase.
すなわち、この発明に係る超音波探触子では、音響パワ
ーは、被検材内へは効率よく放射され、バッキング材１
３）内へ放射される音響パワーは従来に比べ小さくなる
。したがって従来のこの種の超音波探触子に比べ効率を
向上できる利点がある。以上は、超音波振動子山を励振
した場合について説（３）
明したが、超音波を受信する場合についても同様であり
、この場合においても従来に比べ効率を改善できること
は明らかである。That is, in the ultrasonic probe according to the present invention, acoustic power is efficiently radiated into the test material and the backing material 1
3) The acoustic power radiated inward is smaller than before. Therefore, it has the advantage of improving efficiency compared to conventional ultrasonic probes of this type. The above explanation is based on the case where the ultrasonic transducer pile is excited (3), but the same applies to the case where ultrasonic waves are received, and it is clear that the efficiency can be improved compared to the conventional case also in this case.
なお２以上は第２図に示す一実施例の場合について説明
したが、この発明はこれに限らず、超音波振動子＋１１
として平板状のもののみでなく、湾曲状のものを用い７
′）：場合などでも同様の利点が得られることは明らか
であろう。Note that although the above description has been made regarding the case of the embodiment shown in FIG.
In addition to flat plates, curved plates are also used7.
′): It is clear that similar advantages can be obtained in cases such as
′１次、くさび等を用いて、被検材表面に対して超音波
を斜めに送受信する斜角形超音波探触子に適用してもよ
い。The present invention may also be applied to an oblique ultrasonic probe that transmits and receives ultrasonic waves obliquely to and from the surface of a test material using a primary probe, a wedge, or the like.
以上のように、この発明に係る超音波探触子では、２ケ
の超音ｔ１１歴動子ｉｌ＋を４分の１茨長離して配置し
、一方の超音波振動子１１１の励振及び受信信号の位相
と、他方の超音波振動子山の励塵及び受信信号の位相と
の間に９０度の位相差を与えて。As described above, in the ultrasonic probe according to the present invention, the two ultrasonic transducers 111 and il+ are arranged one quarter of a length apart, and the excitation and reception signals of one ultrasonic transducer 111 are and the phase of the excitation and reception signals of the other ultrasonic transducer peak by giving a phase difference of 90 degrees.
被検材方向へは同相でバッキング材方向へは逆相で超音
波を送受信するようにしたことにょ汎超音波送信及び受
信時に、従来に比べ、効率を向上できる利点がある。By transmitting and receiving ultrasonic waves in the same phase toward the test material and in reverse phase toward the backing material, there is an advantage that efficiency can be improved compared to the conventional method when transmitting and receiving universal ultrasonic waves.
（４）(4)
第１図は従来の超昔Ｓ採触子を示す肉、第２図はこの発
明に係る超音波探触子の一実施例を示す図である。
図中、山は超音波振動子、（２）は超音波振動子の音響
放射面、（３）はバッキング材、（４）は音響インピー
ダンス変成層、＋５）は超音波振動子山間に設けた中間
層である。
なお２図中、同一あるいは相浩部分には同一符号を付し
て示しである。
代理人 葛 野 信 −
（５Ｊ
−第１図
第２図FIG. 1 is a diagram showing a conventional ultrasonic S probe, and FIG. 2 is a diagram showing an embodiment of the ultrasonic probe according to the present invention. In the figure, the peaks are the ultrasonic transducer, (2) is the acoustic radiation surface of the ultrasonic transducer, (3) is the backing material, (4) is the acoustic impedance transformation layer, and +5) is the space between the ultrasonic transducer peaks. It is the middle class. In addition, in FIG. 2, the same reference numerals are given to the same or similar parts. Agent Shin Kuzuno - (5J - Figure 1 Figure 2
Claims (1)
一方の超音波振動子の励振及び受信信号の位相と、他方
の超音波振動子の励振及び受信信号の位相との間に９０
度の位相差を与え、超音波が被検材方向へは同相でバッ
キング材方向へは逆相で送受信されるようにしたことｔ
−特徴とする超音波探触子。11/4 of 2 ultrasonic transducers! ! placed long apart,
90% between the phase of the excitation and reception signals of one ultrasonic transducer and the phase of the excitation and reception signals of the other ultrasonic transducer.
The ultrasonic waves were transmitted and received in the same phase toward the material to be inspected and in reverse phase toward the backing material by giving a phase difference of 100 degrees.
-Featured ultrasonic probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57204999A JPS5994990A (en) | 1982-11-22 | 1982-11-22 | Ultrasonic wave probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57204999A JPS5994990A (en) | 1982-11-22 | 1982-11-22 | Ultrasonic wave probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5994990A true JPS5994990A (en) | 1984-05-31 |
Family
ID=16499773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57204999A Pending JPS5994990A (en) | 1982-11-22 | 1982-11-22 | Ultrasonic wave probe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5994990A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634089A1 (en) * | 1988-07-08 | 1990-01-12 | Labo Electronique Physique | Ultrasound transducer with improved sensitivity |
-
1982
- 1982-11-22 JP JP57204999A patent/JPS5994990A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2634089A1 (en) * | 1988-07-08 | 1990-01-12 | Labo Electronique Physique | Ultrasound transducer with improved sensitivity |
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