JPS5811817A - Microphone traverse device for acoustic holography - Google Patents
Microphone traverse device for acoustic holographyInfo
- Publication number
- JPS5811817A JPS5811817A JP10936081A JP10936081A JPS5811817A JP S5811817 A JPS5811817 A JP S5811817A JP 10936081 A JP10936081 A JP 10936081A JP 10936081 A JP10936081 A JP 10936081A JP S5811817 A JPS5811817 A JP S5811817A
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- weight
- moving
- movable
- balance weight
- 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
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- 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
- G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
- G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Holo Graphy (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、例えば空調機や建設機械などのように騒音公
害が問題となる機器の音源位置探査用マイクロホントラ
バース装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microphone traverse device for detecting the position of a sound source in equipment where noise pollution is a problem, such as air conditioners and construction machinery.
音響ホログラフィ法音源位置探査装置は、第１図に示す
ように、音源１に対して設定したホログラム面４上を一
定間隔で音響をサンプリングする移動マイクロホン２、
空間に位置するように静止部に固定された固定マイクロ
ホン３、これらのマイクロホン２．３からの信号を入力
してホログラム情報を得るホログラムｉ＊疼袋１附５、
およびホログラム情報により再生演算を行う丙申演算装
置６から構成されている。このような音源位置探査装置
において、ホログラム面４上で移動マイクロホン２を移
動させる装置として、従来、第２図、第３図に示すもの
が提案されていた。第２図の装置は、従来の音響ホログ
ラフィ用マイクロホントラバース装置の一例であり、ホ
ログラム面の大きさに枠組みされた案内＠１ｇ７と、該
案内装置にＸ方向（水平方向）に移動可能に装着されか
つ床面に対して垂直に設けられた支柱８と、該支柱を移
動させる駆動装置症９と、移動マイクロホン２を保持し
かつ支柱８にＹ方向（上下方向）に移動可能に装着され
た移動台１０と、該移動台１０を移動させる駆動装置１
１とから構成される。該駆動装置１１は支柱８の下端に
取付けられており、前記支柱の駆動装置９の動力によっ
て支柱８をＸ方向に移動すると共に、駆動装置１１の動
力によって移動台１０をＹ方向に移動させ、これによっ
て移動マイクロホン２をホログラム面４上に走査する。As shown in FIG. 1, the acoustic holography method sound source location detection device includes a moving microphone 2 that samples sound at regular intervals on a hologram surface 4 set for a sound source 1;
A fixed microphone 3 fixed to a stationary part so as to be located in space, a hologram i*chibukuro 1 appendix 5 for obtaining hologram information by inputting signals from these microphones 2.3,
and a digital computing device 6 that performs reproduction computing based on hologram information. In such a sound source position detection device, devices shown in FIGS. 2 and 3 have been proposed as a device for moving the movable microphone 2 on the hologram surface 4. The device shown in Fig. 2 is an example of a conventional microphone traverse device for acoustic holography, and includes a guide @1g7 framed to the size of the hologram surface, and a guide @1g7 that is attached to the guide device so as to be movable in the X direction (horizontal direction). and a support 8 provided perpendicularly to the floor surface, a driving device 9 for moving the support, and a moving device 9 that holds the mobile microphone 2 and is attached to the support 8 so as to be movable in the Y direction (vertical direction). A stand 10 and a drive device 1 for moving the moving stand 10
1. The drive device 11 is attached to the lower end of the column 8, and the column drive device 9 moves the column 8 in the X direction by the power of the column drive device 9, and the movable table 10 is moved in the Y direction by the power of the drive device 11. This causes the moving microphone 2 to scan over the hologram surface 4.
第３図は移動台１０の移動手段の詳細例を示すもので、
移動台１０は中空状の支柱８を包持するように上下動可
能に装着されており、支柱８の内部８ａにはバランスウ
ェイト１６が収容されている。該バランスウェイト１６
は、移動台１０と移動マイクロホン２の合計重量に相当
する重量のものであり、該バランスウェイト１６と移動
台１０とは、支柱の上下開口部Ｂｂ、Ｂｅに取付けられ
た下車（歯車または定滑車）１２と下車（歯車または定
滑車）２０に掛けられた可撓性を有する連結部材（チェ
ーンまたはベルト）１８．１９によ゛り連結されており
、下車２０を駆動装置１１によって回すととにより、移
動台１０および該移動台に保持された移動マイクロホン
２を上下動させる。FIG. 3 shows a detailed example of the means for moving the moving table 10.
The movable table 10 is mounted so as to be able to move up and down so as to surround a hollow column 8, and a balance weight 16 is housed in the interior 8a of the column 8. The balance weight 16
has a weight equivalent to the total weight of the moving base 10 and the moving microphone 2, and the balance weight 16 and the moving base 10 are equipped with a lower gear (a gear or a fixed pulley) attached to the upper and lower openings Bb and Be of the column. ) 12 and the lower wheel (gear or fixed pulley) 20 are connected by a flexible connecting member (chain or belt) 18 and 19, and when the lower wheel 20 is rotated by the drive device 11, , the movable table 10 and the movable microphone 2 held on the movable table are moved up and down.
このような従来のトラバース装置においては、移動マイ
クロホン２を移動させるために、上下に車１２．２０を
取付けだ構造であるため、バランスウェイト１６として
、移動台１０および移動マイクロホン２の合計重量と四
−重１ｓｔのものが必要となる。通常の音源探査装置に
おいては、移動台１０に３〜１０本のマイクロホン保持
させているだめ、マイクロホン２１移動台１０の他にマ
イクロホンケーブルの重量も加えられる。従ってこれら
とバランスさせるバランスウェイト１６の長さが極めて
長くなり、そのために該バランスウェイト１６が支柱８
内で上下動できる範囲、すなわち移動マイクロホン２の
移動範囲が限られ、実用性に乏しかった。さらにバラン
スウェイト１６の重量が大きいため、バランスウェイト
１６が上部位置で停止するような場合、慣性が大きく、
支柱８を加撮し、移動台１０ひいては移動マイクロホン
２が大きく４辰れて音源探査に大きな誤差を生じる。In such a conventional traverse device, in order to move the mobile microphone 2, the wheels 12 and 20 are attached above and below, so the balance weight 16 is a combination of the total weight of the mobile stage 10 and the mobile microphone 2, and the total weight of the mobile microphone 2. -A heavy 1st one is required. In a normal sound source detection device, since the moving table 10 holds three to ten microphones, the weight of the microphone cable is added in addition to the microphone 21 and the moving table 10. Therefore, the length of the balance weight 16 that balances these becomes extremely long, so that the balance weight 16 is
The range in which the mobile microphone 2 can be moved up and down, that is, the range in which the mobile microphone 2 can move, is limited, making it impractical. Furthermore, since the weight of the balance weight 16 is large, if the balance weight 16 stops at the upper position, the inertia is large.
The pillar 8 is additionally photographed, and the movable stage 10 and eventually the movable microphone 2 are moved by four angles, causing a large error in sound source detection.
従来のトラバース装置にはこのような欠点を有している
ため、移動マイクロホン２が完全に停止するまで測定（
データ取り込み）を中止せざるを得なかった。このため
、全体の探査時間が長くなり、この間に音源の性質が変
化しくエンジンや油圧ポンプの場合、油量等が変化する
）、精度の低下を招いていた。Conventional traverse devices have these drawbacks, so they cannot be measured (until the mobile microphone 2 completely stops).
data import) had to be canceled. As a result, the overall search time becomes longer, and during this time the characteristics of the sound source change (in the case of engines and hydraulic pumps, the amount of oil changes, etc.), leading to a decrease in accuracy.
本発明の目的は、上述した事項に鑑み、移動マイクロホ
ンの移動範囲が拡大されると共に、全体の測定時間を短
縮でき、かつ測定精度の向上が達成できる構成のマイク
ロホントラバース装置を提供することにある。In view of the above-mentioned matters, an object of the present invention is to provide a microphone traverse device having a configuration in which the movement range of a mobile microphone is expanded, the overall measurement time can be shortened, and measurement accuracy can be improved. .
本発明の特徴は、支柱内に、移動台と移動マイクロホン
の合計重量の約１７２以下に相当する重量のバランスウ
ェイトを挿入すると共に、これらの静的バランスがとれ
るようにバランスウェイト。A feature of the present invention is that a balance weight having a weight equivalent to about 172 kg or less of the total weight of the movable table and the movable microphone is inserted into the support column, and the balance weight is used to maintain a static balance between them.
移動台、および１駆動装置間を連係させる可撓性連結部
材と、該連結部材を掛ける軸位置固定の車（定滑車まだ
は歯車）および軸位置可動の車（動滑車または歯車）を
設けたことにある。A flexible connecting member that connects the movable platform and one drive device, a wheel with a fixed shaft position (fixed pulley or gear) and a wheel with a movable shaft position (moving pulley or gear) on which the connecting member is hung are provided. There is a particular thing.
以下本発明の一実施例を第４図によ如説明する。An embodiment of the present invention will be explained below with reference to FIG.
１６は中空状の支柱８の内空部８ａ内に挿入されたバラ
ンスウ、エイトであり、該バランスウェイト１６は支柱
８に上下動自在に装着された移動台１０およびこれに保
持された移動マイクロホン２の合計重量の約１７２とな
っている。１２．２０は支柱上部、下部にそれぞれ設け
た開口部Ｂｂ。Reference numeral 16 denotes a balance weight or eight inserted into the inner space 8a of the hollow support 8, and the balance weight 16 is connected to a movable table 10 mounted on the support 8 so as to be movable up and down and a movable microphone held thereon. The total weight of 2 is about 172. 12. 20 are openings Bb provided at the upper and lower parts of the pillar, respectively.
８Ｃに設けた軸位置固定の車（定滑車または歯車）、１
２ａ、２０ａは軸位置可変の車（動滑車または歯車）で
ある。１８．１９は可撓性を有する連結部材（ベルトま
たはチェーン）であり、連結部材１８はその一端ヲバラ
ンスウェイト１６に連結し、車１２，１２８に掛けて他
端を支柱上端から突出した突出部２１に連結し、車１２
ｇの軸は移動台１０に連結体２２により結合しである。Wheel with fixed shaft position (fixed pulley or gear) installed at 8C, 1
2a and 20a are wheels (moving pulleys or gears) whose shaft positions are variable. 18. 19 is a flexible connecting member (belt or chain); one end of the connecting member 18 is connected to the balance weight 16, the other end is a protruding part that is connected to the wheels 12, 128, and the other end is a protruding part that protrudes from the upper end of the column. Connected to 21, car 12
The axis of g is connected to the movable table 10 by a connecting body 22.
一方、連結部材１９の一端は支柱８の下端に連結し、バ
ランスウェイト１６から垂下した車２０ａ、２０に掛け
て他端を移動台１０に連結しである。On the other hand, one end of the connecting member 19 is connected to the lower end of the support column 8, hung on wheels 20a and 20 hanging from the balance weight 16, and the other end is connected to the movable platform 10.
この構成において、駆動装置１１より得られたトルクは
軸位置固定の車２０を巻回し、輔位置可変の屯２０ａに
伝達される。この車２０ａとバランスウェイト１６は連
結しであるので、車２０゜２０ａに伝達されたトルクに
より、移動台１０および移動マイクロホン２が上下方向
に移動する。In this configuration, the torque obtained from the drive device 11 winds the wheel 20 whose shaft position is fixed, and is transmitted to the wheel 20a whose shaft position is variable. Since the wheel 20a and the balance weight 16 are connected, the movable table 10 and the movable microphone 2 are moved in the vertical direction by the torque transmitted to the wheel 20.degree. 20a.
この場合、バランスウェイト１６によって静的バランス
がとられ、上下動時におけるトルクのアンバランスが除
去される。In this case, static balance is maintained by the balance weight 16, and torque imbalance during vertical movement is eliminated.
なお本実施例においては、軸位置可変の車をそれぞれ上
下に１個ずつ設けることにより、バランスウェイトを約
１７２の重量としだが、軸位置可変の車の数を増やすこ
とにより、バランスウェイトの重量をより軽くすること
ができる。In this example, the weight of the balance weight is approximately 172 by providing one wheel on the upper and lower sides with variable axle positions, but the weight of the balance weight can be reduced by increasing the number of wheels with variable axle positions. It can be made lighter.
以上述べたように、本発明においては、軸位置可変の車
を上下それぞれ１１１ｉ！ｉ１以上備えてバランスウェ
イトを約１７２以下としたので、トラバース装置の移動
部分の重量が小となり、慣性が小となる。従って停止後
の支柱も−よび移動マイクロホンの振れが小さくなり、
これによって移動マイクロホンが停止１での時間が短縮
されるため、測定時間が短縮される。具体的には、従来
装置において、は娠れが止まるまでの時間は１．５秒で
ある場合、０．５秒に短縮され、トータルの１点当りの
測定時間は、前記各時間にデータのとり込み時間の２．
５秒を加えて、４秒から３秒に短縮され、全体の計測時
間を２５％短縮できる。また、バランスウェイトの長さ
を小とすることが可能となるので、移動マイクロホンの
移動範囲を大きくすることができる。また、バランスウ
ェイトを小さくすることが可能になるので、支柱も細く
することが可能となり、音響の反射面が小さくなり、そ
の結果、誤差発生原因と々る反射面によるイメージ像を
除去することが可能となり、前記測定時間の短縮と相俟
って、測定精度を大巾に上げることが可能となる。As described above, in the present invention, a vehicle with variable axle position can be set to 111i! Since the balance weight is set to be about i1 or more and about 172 or less, the weight of the moving part of the traverse device is small and the inertia is small. Therefore, the vibration of the prop after stopping and the vibration of the moving microphone are reduced.
This reduces the time the mobile microphone spends at stop 1, thereby reducing the measurement time. Specifically, when the conventional device takes 1.5 seconds to stop bleeding, this is shortened to 0.5 seconds, and the total measurement time per point is reduced by adding data at each of the above times. 2. Intake time.
By adding 5 seconds, the time is reduced from 4 seconds to 3 seconds, reducing the total measurement time by 25%. Furthermore, since the length of the balance weight can be reduced, the movement range of the mobile microphone can be increased. In addition, since it is possible to reduce the balance weight, it is also possible to make the pillars thinner, and the acoustic reflecting surface becomes smaller.As a result, it is possible to eliminate the image caused by the reflecting surface, which is the cause of errors. This makes it possible to greatly improve measurement accuracy in conjunction with the reduction in measurement time.
第１図は本発明の対象となる音響探査装置の一例を示す
斜視図、第２図は従来のトラバース装置を示す斜視図、
第３図は従来のトラバース装置を示す縦断面図、第４図
は本発明によるトラバース装置の一実施例を示す縦断面
図である。
２・・・移動マイクロホン、３・・・固定マイクロホン
、８・・・支柱、１０・・・移動台、１１・・・駆動装
置、１２゜２０・・・軸位置固定の車、１２ａ、２０ａ
・・・軸位置可変の車、１８．１９・・・連結部材。
代理人 弁理士 薄田利幸
摺 １ 国
第 Ｚ 図
■ ３ 口
第 ４ 図FIG. 1 is a perspective view showing an example of an acoustic exploration device to which the present invention is applied, and FIG. 2 is a perspective view showing a conventional traverse device.
FIG. 3 is a longitudinal sectional view showing a conventional traverse device, and FIG. 4 is a longitudinal sectional view showing an embodiment of the traverse device according to the present invention. 2... Moving microphone, 3... Fixed microphone, 8... Pillar, 10... Moving stand, 11... Drive device, 12° 20... Car with fixed axis position, 12a, 20a
...Vehicle with variable shaft position, 18.19...Connection member. Agent Patent Attorney Toshiyuki Usuda 1. Country No. Z Diagram■ 3. Portion 4.
Claims (1)
可能に装着される移動台に保持される移動マイクロホン
と、該移動台を上下動させる駆動装置とを備えだ音−ホ
ログラフィ用マイクロホントラバース装置において、中
空状をなす支柱内に、前記移動台と前記移動マイクロホ
ンの合計重量の約１／２以下に相当する重量のバランス
ウェイトを挿入すると共に、ａ亥バランスウェイトと前
記移動台および移動マイクロホンとの静的バランスがと
れるように、該バランスウェイト、移動台、および駆動
装置間を連係させる可撓性の連結部材と、該連結部材を
掛ける軸位置固定の車および軸位置可変の車とを設け・
たことを特徴とする音響ホログラフィ用マイクロホント
ラバース装置。In a microphone traverse device for sound-holography, comprising a fixed microphone fixed to a stationary part, a movable microphone held on a movable base mounted on a support so as to be movable up and down, and a drive device for moving the movable base up and down. , a balance weight having a weight equivalent to about 1/2 or less of the total weight of the movable base and the movable microphone is inserted into the hollow support; In order to achieve static balance, a flexible connecting member that connects the balance weight, the moving platform, and the drive device, and a wheel with a fixed shaft position and a wheel with a variable shaft position on which the connecting member is hung are provided.
A microphone traverse device for acoustic holography, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936081A JPS5811817A (en) | 1981-07-15 | 1981-07-15 | Microphone traverse device for acoustic holography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10936081A JPS5811817A (en) | 1981-07-15 | 1981-07-15 | Microphone traverse device for acoustic holography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5811817A true JPS5811817A (en) | 1983-01-22 |
Family
ID=14508248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10936081A Pending JPS5811817A (en) | 1981-07-15 | 1981-07-15 | Microphone traverse device for acoustic holography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5811817A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61213637A (en) * | 1985-03-19 | 1986-09-22 | Nippon Soken Inc | Measuring instrument for acoustic information |
| JPS62288532A (en) * | 1986-06-06 | 1987-12-15 | Matsushita Electric Ind Co Ltd | Microphone moving apparatus |
| EP0288980A2 (en) * | 1987-04-30 | 1988-11-02 | Sonoscan, Inc. | Balanced scanning mechanism |
| JPH0522052Y2 (en) * | 1987-11-17 | 1993-06-07 | ||
| EP0739583A1 (en) | 1995-04-27 | 1996-10-30 | Nihon Tensaiseito Kabushiki Kaisha | Continuously assembled pots for raising and transplanting seedlings |
| US5653055A (en) * | 1995-01-31 | 1997-08-05 | Nihon Tensaiseito Kabushiki Kaisha | Continuously assembled pots for raising and transplanting seedlings |
| US5996513A (en) * | 1997-08-26 | 1999-12-07 | Nihon Tensaiseito Kabushiki Kaisha | Machine for transplanting seedlings |
| US7937892B2 (en) | 2004-12-27 | 2011-05-10 | Nippon Beet Sugar Mfg., Co., Ltd. | Continuous assemblage of pots for raising and transplanting seedlings and method of manufacturing the same |
-
1981
- 1981-07-15 JP JP10936081A patent/JPS5811817A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61213637A (en) * | 1985-03-19 | 1986-09-22 | Nippon Soken Inc | Measuring instrument for acoustic information |
| JPS62288532A (en) * | 1986-06-06 | 1987-12-15 | Matsushita Electric Ind Co Ltd | Microphone moving apparatus |
| EP0288980A2 (en) * | 1987-04-30 | 1988-11-02 | Sonoscan, Inc. | Balanced scanning mechanism |
| JPH0522052Y2 (en) * | 1987-11-17 | 1993-06-07 | ||
| US5653055A (en) * | 1995-01-31 | 1997-08-05 | Nihon Tensaiseito Kabushiki Kaisha | Continuously assembled pots for raising and transplanting seedlings |
| EP0739583A1 (en) | 1995-04-27 | 1996-10-30 | Nihon Tensaiseito Kabushiki Kaisha | Continuously assembled pots for raising and transplanting seedlings |
| US5996513A (en) * | 1997-08-26 | 1999-12-07 | Nihon Tensaiseito Kabushiki Kaisha | Machine for transplanting seedlings |
| US7937892B2 (en) | 2004-12-27 | 2011-05-10 | Nippon Beet Sugar Mfg., Co., Ltd. | Continuous assemblage of pots for raising and transplanting seedlings and method of manufacturing the same |
| EP2767155A1 (en) | 2004-12-27 | 2014-08-20 | Nippon Beet Sugar Mfg., Co., Ltd. | Continuous assemblage of pots for raising and transplanting seedlings and method of manufacturing the same |
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