JPH0635596Y2 - Directional receiver - Google Patents
Directional receiverInfo
- Publication number
- JPH0635596Y2 JPH0635596Y2 JP7889088U JP7889088U JPH0635596Y2 JP H0635596 Y2 JPH0635596 Y2 JP H0635596Y2 JP 7889088 U JP7889088 U JP 7889088U JP 7889088 U JP7889088 U JP 7889088U JP H0635596 Y2 JPH0635596 Y2 JP H0635596Y2
- Authority
- JP
- Japan
- Prior art keywords
- reflecting mirror
- output light
- focal point
- attached
- directional receiver
- 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.)
- Expired - Lifetime
Links
Landscapes
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Description
【考案の詳細な説明】 ［産業上の利用分野］ この考案は、音波あるいは電波等の波動を指向性を付け
て計測するための指向性受波器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a directional receiver for measuring waves such as sound waves or radio waves with directivity.
［従来の技術］ 従来から、ある範囲の波動強度を観察するために、指向
性をつけて波動を受波することが行われており、その代
表的なものに反射鏡があり、例えばパラボラを付けた集
音器、反射望遠鏡などがこれである。[Prior Art] Conventionally, in order to observe the wave intensity in a certain range, it has been performed to receive the wave with a directivity, and a typical example thereof is a reflecting mirror. This is the attached sound collector, reflecting telescope, etc.
一方、空間の特定点からの波動を計測する方法として、
回転楕円体面を有する反射鏡を用いる方法が日本航空宇
宙学会誌第30巻第337号96頁〜99頁に開示されており、
ジェット騒音の音響強度分布の計測に用いられ、有用性
が実証されている。これは回転楕円体面を有する反射鏡
の一方の焦点にセンサを置き、他方の焦点を計測したい
点に持っていくものである。このように回転楕円体面反
射鏡を用いることによって特定点の波動の強度が計測で
きるのは、回転楕円体面には２個の焦点があり、一方の
焦点から生ずる波動を効率良く他方の焦点に集積させる
機能があるためである。On the other hand, as a method of measuring waves from a specific point in space,
A method of using a reflecting mirror having a spheroidal surface is disclosed in Journal of Japan Aerospace Society No. 30, No. 337, pp. 96-99,
It is used to measure the acoustic intensity distribution of jet noise and has proved useful. In this method, a sensor is placed at one focal point of a reflecting mirror having a spheroidal surface, and the other focal point is brought to a point to be measured. In this way, by using the spheroidal reflector, the intensity of the wave at a specific point can be measured because the spheroid has two focal points, and the waves generated from one focal point are efficiently collected at the other focal point. This is because there is a function to make it.
［考案が解決しようとする課題］ しかしながら、実験装置のような場合は指向性受波器を
特定軌道上を移動させることっよって計測点を受波器の
焦点に一致させることは容易であるが、プラント配管や
一般の機械の特定点から生ずる波動を計測する場合、計
測点と受波器の計測用焦点を一致させることは困難であ
る。[Problems to be Solved by the Invention] However, in the case of an experimental device, it is easy to make the measurement point coincide with the focus of the receiver by moving the directional receiver on a specific orbit. When measuring a wave generated from a specific point of plant piping or a general machine, it is difficult to make the measuring point coincide with the measuring focus of the receiver.
［課題を解決するための手段］ このような問題を解決するためにこの考案は、焦点位置
で出力光が交差する光発生器を反射鏡に設けたものであ
る。[Means for Solving the Problem] In order to solve such a problem, the present invention provides a reflector with a light generator in which output light intersects at a focal position.
［作用］ 光発生器の出力光交差位置が焦点位置であることが容易
に判断できるために、焦点位置を常に測定対象の位置と
して、反射鏡を移動させることができる。[Operation] Since it can be easily determined that the output light crossing position of the light generator is the focus position, the reflecting mirror can be moved with the focus position always being the position of the measurement target.
［実施例］ 図はこの考案の一実施例を示す斜視図である。図におい
て１はマイクロホンであり、回転楕円体面を有する反射
鏡２の一方の焦点位置に取り付けられている。31、32は
光発生器であり、反射鏡２の開口周円部付近に取り付け
られており、その取り付け角度は出力光が反射鏡２の他
方の焦点６で交差するようになっている。４は反射鏡２
を指示する把手、５は測定対象である。[Embodiment] FIG. 1 is a perspective view showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a microphone, which is attached to one focus position of a reflecting mirror 2 having a spheroidal surface. Reference numerals 3 1 and 3 2 denote light generators, which are attached near the circumference of the aperture of the reflecting mirror 2 so that the output light intersects at the other focal point 6 of the reflecting mirror 2. . 4 is a reflecting mirror 2
The handle 5 that indicates is a measurement target.
このように構成された装置において測定者は把手４を持
ち、反射鏡の焦点位置である光発生器３の出力光交差位
置６が測定対象の位置に来るように反射鏡２の位置を調
整し、必要な測定を行う。そして、出力光交差位置６が
常に測定対象の位置となるように反射鏡２の位置を移動
させることによって測定対象５から送出されている波動
を計測することができる。In the device configured as described above, the measurer holds the handle 4 and adjusts the position of the reflecting mirror 2 so that the output light crossing position 6 of the light generator 3 which is the focus position of the reflecting mirror comes to the position to be measured. , Make the necessary measurements. Then, by moving the position of the reflecting mirror 2 so that the output light crossing position 6 always becomes the position of the measurement target, the wave motion transmitted from the measurement target 5 can be measured.
なお、光発生器３は反射鏡の外面に取り付ける方が音響
性能の面では優れているが、精度に支障がない範囲で内
面側に取り付けても良い。Although the light generator 3 is better in terms of acoustic performance when attached to the outer surface of the reflecting mirror, it may be attached to the inner surface within a range that does not impair accuracy.
［考案の効果］ 以上説明したようにこの考案は回転楕円体面を有する反
射鏡に光発生器を設け、その光発生器の出力光が反射鏡
の焦点の一つで交差するようにしたので、反射鏡の焦点
位置が容易に判別できるという効果を有する。[Effect of the Invention] As described above, in the present invention, the light generator is provided in the reflecting mirror having the spheroidal surface, and the output light of the light generator intersects at one of the focal points of the reflecting mirror. This has an effect that the focal position of the reflecting mirror can be easily identified.
図はこの考案の一実施例を示す斜視図である。 １……マイクロホン、２……反射鏡、３……光発生器、
４……把手、５……測定対象、６……焦点（出力光交差
位置）。The drawing is a perspective view showing an embodiment of the present invention. 1 ... Microphone, 2 ... Reflector, 3 ... Light generator,
4 ... Handle, 5 ... Object to be measured, 6 ... Focus (output light crossing position).
Claims (1)
サと、 出力光が反射鏡の他方の焦点で交差する状態で反射鏡に
取り付けられた複数個の光発生器とを有することを特徴
とする指向性受波器。1. A reflecting mirror having a spheroidal surface, a sensor attached to the focal point of the reflecting mirror close to the mirror surface, and an output light attached to the reflecting mirror in a state where the output light intersects with the other focal point of the reflecting mirror. And a plurality of light generators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7889088U JPH0635596Y2 (en) | 1988-06-16 | 1988-06-16 | Directional receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7889088U JPH0635596Y2 (en) | 1988-06-16 | 1988-06-16 | Directional receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH021993U JPH021993U (en) | 1990-01-09 |
| JPH0635596Y2 true JPH0635596Y2 (en) | 1994-09-14 |
Family
ID=31303783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7889088U Expired - Lifetime JPH0635596Y2 (en) | 1988-06-16 | 1988-06-16 | Directional receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635596Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4017465B2 (en) * | 2002-07-15 | 2007-12-05 | 財団法人鉄道総合技術研究所 | Sound collector and acoustic wave analysis system |
| JP4298635B2 (en) * | 2004-11-26 | 2009-07-22 | 財団法人鉄道総合技術研究所 | Axle bearing monitoring method for rolling stock by measuring axle box sound |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5233963B2 (en) | 2009-11-11 | 2013-07-10 | 三菱電機株式会社 | Resin identification device |
-
1988
- 1988-06-16 JP JP7889088U patent/JPH0635596Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5233963B2 (en) | 2009-11-11 | 2013-07-10 | 三菱電機株式会社 | Resin identification device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021993U (en) | 1990-01-09 |
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