close

Вход

Забыли?

вход по аккаунту

?

JPS6359099

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JPS6359099
[0001]
[Industrial field of application 1] The present invention relates to a sound collecting device used
for processing a sound generated from a sound source object into a sound image. [Prior Art] For
example, when noise measures are taken in a machine or factory, or when the nature, size, etc. of
sound is searched and measured, it is necessary to accurately detect the noise source. In order to
measure the position and the size of the sound source simply and accurately, the present
inventors have developed a sound source search method using a sound collection device. It is
shown in the figure. That is, as is apparent from the figure, the sound source S is provided at the
position P, and a reflection type sound collector having a concave surface shape such as a
paraboloid surface or a concave spherical surface is provided at a position spaced from the
position P When disposed toward the sound source S, the sound from the sound source S is
reflected by the reflecting surface r of the sound collector, and the sound image S 'is formed at
the position of P'. Therefore, if a microphone array in which a large number of microphones are
arranged in parallel in a matrix at this sound image forming position P 'is disposed opposite to
the reflecting surface r, even if it is a large sound source object, the sound pressure distribution
in the microphone array By visualizing and displaying this sound pressure portion lti by an
appropriate means, the position of the sound source can be searched and measured. [Problem to
be Solved by the Invention J In order to improve the resolution for forming the above-mentioned
sound image, it is necessary to make the shape of the sound collector functioning as an acoustic
lens large to some extent. In the case where the sound source search device is carried to an
appropriate place, when the sound collector becomes large, it is not only inconvenient for
carrying it, but also requires a large space for storing it, and so on There are still some difficulties
in achieving this. SUMMARY OF THE INVENTION The present invention has been made in view
of the point of view, and it is an object of the present invention to provide a sound collecting
device which can be stored compactly and is convenient for carrying and storing. [Means for
03-05-2019
1
Solving the Problems 1 In order to achieve the above-mentioned object, the present invention
arranges a sound collector of concave curved surface shape such as a paraboloid of revolution,
concave spherical surface, etc. toward the sound source object, A sound collecting device for
forming a sound image by opposingly arranging a microphone array in which a large number of
microphones are arranged in a matrix on a sound collecting device, and reflecting sound from the
sound collecting device to the microphone array. A core piece and a peripheral piece formed by
dividing the peripheral part of the core piece in the radial direction, and the core piece and each
peripheral piece are detachably connected to each other Thus, the present invention is
characterized in that a sound collector assembly is formed, and the sound collector assembly is
detachably attached to the support member.
[Operation 1 When the sound collecting device is not used, the sound collecting device can be
disassembled and divided into a core piece and a plurality of circumferential surface pieces and
stored. Here, since the sound collector has a concave curved shape, there is a considerable depth
from the peripheral portion to the central portion of the core piece, but if the radius of the core
piece is made relatively small , Its depth also decreases accordingly. Further, by dividing the
peripheral portion of the core piece in the radial direction into plural pieces, each peripheral
piece can be miniaturized, and therefore, if these pieces are stacked, they can be compactly
stored, and the storage space can be saved. As well as being able to On the other hand, in order
to assemble as a sound collector, this can be easily performed by sequentially connecting
peripheral surface pieces around the core piece. Embodiment 1 Hereinafter, an embodiment of
the present invention will be described in detail based on the drawings. First, in FIGS. 1 and 2,
reference numeral l denotes a sound collector assembly having a concave surface such as a
paraboloid of revolution, a concave spherical surface, etc. The reflecting surface 1a is formed to
reflect the noise of the microphone array 2, and the microphone array 2 is disposed opposite to
the reflecting surface 1a. The microphone array 2 is configured by arranging a large number of
microphones 2a respectively provided toward the reflection surface 1a in a matrix as shown in
FIG. 3, and these microphones 2a are mounted on the support plate 3 A sound absorbing
material is interposed between the microphones 2a so that the microphones 2a are not affected
by vibration. Further, in the wiring box 4 provided on the back of the support plate 3, a T4
camera 5 is mounted toward the sound source object, and the TV camera 5 can pick up an image
of the sound source object. The sound image formed on the above-mentioned microphone array
2 is superimposed on this object image, and can be visualized and displayed by display means
such as a TV monitor. The sound collector assembly 1 is composed of five divided pieces, and the
core piece 6 having a circular shape in plan view and the annular peripheral surface part
surrounding the core piece 6 in the central part are equally spaced in the radial direction. It is
comprised from the surrounding surface piece 7 divided into four. At peripheral portions of the
core piece 8 and the peripheral surface pieces 7, joint portions 6a and 7a protruding in the back
surface direction are respectively formed along the entire circumference. Then, as the joint
portions 8a and 7a respectively join the respective pieces 6 and 7 with each other, as shown in
03-05-2019
2
FIG. 4, these joint portions 8a and? It can be assembled by connecting / connecting between a
and joints 6a and ea by means of a hook 8 consisting of a gold 8a and a holder 8b.
The mounting portion 9 is provided at four places on the surface side of the core piece 8, and
each mounting is performed on the four leg frames 10a of the support frame 10 for supporting
the microphone array 2 and the like at the portion 8 The support frame 10 is configured to be
removably attachable to the core piece 6 by engaging the hooks 11 arranged in series. The
supporting frame lO comprises the above-described four footrests 10a, a connecting foot 10b for
connecting between the upper and lower members of the footrest 10a, and a bridging foot 10c
for bridging between the respective connecting hooks 10b. It is configured. A guide member 12
is fixed to the connecting rod 10b. The base plate 13 on which the assembly consisting of the
support plate 3, the wiring box 4 and the TV camera 5 is mounted can be reciprocated along the
mirror axis C of the reflection surface 1a of the sound collector assembly l. . Then, in order to
move the base plate 13, a screw shaft 14 is screwed into the plywood 13. The screw shaft 14
penetrates the core piece 6 and is extended to the back surface side thereof. By moving the
microphone array 2 along the mirror axis C from the back side of the sound collector assembly 1,
adjustment of the focal position of the sound image can be performed. Furthermore, the footrest
10a of the support frame 10 is formed of a hollow member such as a metal pipe, and the wiring
15 from the microphone array 2 and the TV camera 5 is inserted therein, and the wiring 15 is
provided on the core piece 6. It is connected to the terminal connection portion 18 so that the
wiring can be taken out on the back surface side of the sound collector assembly l. The sound
collector assembly 1 assembled as described above is supported by a support member 18
mounted on a tripod 17, the support member 18 being a post 19 detachably connected to the
tripod 17, It comprises a pair of arms 20.20 connected to the support column 18. Further, in the
peripheral surface piece 7 constituting the sound collector assembly 1 provided on the left and
right portions, a connecting protrusion 21 is provided in a protruding manner at the center of
gravity position on the back surface side, and the connecting protrusion The child 21 is fitted to
the four parts 20a formed at the tip of the arm 20, and the tightening is performed by holding
the port 22 so that the sound collector assembly l is held connected to the support member 18 .
Further, as shown in FIG. 5, the arm 20 is pivotably connected to the support 18 and in a state
where the sound collector assembly 1 is not attached thereto, the arm 20 is supported by the
support post 19. It is configured to be foldable around the
In FIG. 1, reference numeral 23 denotes a plate for adjusting the angle of the sound collector
assembly 1. The present embodiment is configured as described above, and its operation will be
described next. First, as shown in FIGS. 1 and 2, the core piece 6 and the peripheral face piece 7
constituting the sound collector assembly 1 are attached to the support member 18 in a
connected state, and the core piece The mounting frame 6 is mounted on the supporting frame
10, and the microphone array 2 and an assembly such as a TV right camera are mounted on the
03-05-2019
3
mounting frame 6. In this state, the mirror axis C of the sound collector assembly l is set to point
to the sound source object. Then, by screwing the screw shaft 14 as appropriate, focus
adjustment of the microphone array 2 is performed, and in accordance with this, focus
adjustment of the right TV camera is performed to perform focusing of the sound image and the
object image. Therefore, when sound is generated from the sound source object, this sound is
reflected by the reflection surface 1a of the sound collector assembly 1 and received by each
microphone 2a constituting the microphone array 2, and the sound pressure level is determined
according to the sound pressure level. It is converted to an electrical signal. A sound image
processing process is suitably performed by signal processing means (not shown) based on this
electric signal, and the sound image is superimposed on the object image obtained by the TV
right camera and displayed on the display device. As a sound image composed of the position of
the sound source and the sound pressure distribution thereof, the image can be visualized and
superimposed on the object image. In the case of measuring a large sound source object as in a
large machine, a factory or the like with this sound collecting device, it is necessary to increase
the diameter of the sound collector assembly l to improve the resolution of the sound image.
Therefore, in order to make it easy to transport and store the sound collection apparatus itself to
a place where the sound source object to be measured is located, and to make the handling
thereof convenient, the sound collection apparatus includes It can be disassembled and stored
compactly. Thus, to disassemble the sound collecting device, first, the tightening loosens the bolt
22 and separates the plate 23 from the connection to the sound collector assembly 1 or the
connection to the support member 18 , The sound collector assembly 1 is detached from the arm
20 of the support member 18. After that, the core piece 6 constituting the sound collector
assembly 1 and the four circumferential surface pieces 7 are respectively separated by detaching
the hooking tool 8. Further, by separating the support column 19 of the support member 18
from the tripod 17 and folding the arm 20 centering on the support column, the above-described
respective constituent members can be compactly stored.
Furthermore, if the hooks 11 of the footrests 10a of the support frame 10 attached to the core
piece 6 are attached and detached from the portion 8 and the wiring 15 is removed from the
terminal connection portion 16, the microphone array 2 and Since the TV right camera can be
housed separately from the core piece 6, it is advantageous in terms of its protection. It should
be noted that the sound collector assembly l has a large diameter to improve the resolution, and
the depth increases according to this diameter, which is inconvenient for transportation and
storage as it is, but As described above, by dividing the core piece 8 and the circumferential
surface piece 7 into a stacked state, they can be stored extremely compactly. On the other hand,
in order to assemble each component disassembled as described above, the opposite operation to
that at the time of this decomposition may be performed. That is, first, the support frame 10 on
which the microphone array 2 and the TV camera 5 are mounted is attached to the core piece 6.
After that, the joint 7a of the peripheral surface piece 7 is brought into contact with the joint 6a
of the core piece 6, and the hook Jlt 8 is manually engaged with the gold 8a by the hook 8a. The
03-05-2019
4
sound collector assembly l is assembled by bringing the joint portions 7a of the circumferential
surface pieces 7 adjacent to each other into contact with each other and engaging the hooks 8
therebetween. Here, when the core piece 6 and the circumferential surface piece 7 described
above are in the connected state, the positions of the microphone array 2 and the TV camera 5
mounted on the core piece 8 and the sound collector assembly 1 are The positional relationship
between the supporting member 18 to be supported and the connecting projection 21 and the
like must be in a predetermined state, but as shown in FIG. Since 8a is at the joint on one side
and the receiver is at the joint on the other side, its positional relationship can be easily adjusted
by aligning them with these positions. Next, the tripod 17 is set to face the sound source object,
and the support 18 of the support member 18 is connected to the tripod 17 so that the arms 20
and 20 of the support member 18 are laterally extended. The connecting projection 21 of the
formed sound collector assembly 1 is fitted in the recess 2 Oa of each of the arms 20, and the
clamp tightens the port 22. Further, by adjusting the sound collector assembly 1 to be at a
predetermined angle with respect to the sound source object by the plate 23, the assembly is
completed, and the noise from the sound source object can be sampled. . As described above, the
assembling and disassembling of the sound collecting apparatus can be easily and quickly
performed without using a special tool such as the hook 1 fixture 8 or the like.
By forming the core piece 6 in the sound collector assembly 1 into a circular shape in a plan
view, when assembled, the force of the circumferential surface piece 7 acting on the core piece 6
becomes equal, It becomes possible to assemble in a very stable state. Further, as shown in FIG.
1, by connecting the circumferential surface pieces 7 to each other by bending the curved
portion at two points, the line segment connecting the two points is positioned inward from the
outer end of the joint portion. Therefore, as shown by the arrow in the same figure, a force acts
in the direction in which the adjacent peripheral surface pieces 7 and 7 are crimped to each
other, and even by the simple connection means as in the case of the locking tool 8 described
above. The connection portion can be sufficiently fixed, and the stability of the sound collector
assembly 1 is further improved. Here, although the core piece 6 and the peripheral face piece 7
constituting the sound collector assembly 1 can be formed of metal such as aluminum, they are
formed of lightweight members such as glass-FRP, carbon-FRP, etc. This will facilitate
disassembly and assembly, and is convenient for carrying. Moreover, since members such as
glass-FRP and carbon-FRP are relatively soft, vibration absorption is good, and therefore, the
problem that the sound of a specific frequency resonates and causes a measurement error is
minimized. You will be able to However, when the large diameter sound collector assembly 1 is
formed of a resin material such as FRP, its shape retention property is deteriorated, but the
strength is improved by dividing it into a plurality of pieces as described above. By forming a
joint at the peripheral edge of each part, the joint becomes a reinforcing material, and the shape
retention property is remarkably improved. In the above embodiment, the peripheral surface
piece 7 of the sound collector assembly 1 is divided into four, but the number of divisions is not
limited to four, and three, five, etc. It can be an arbitrary number such as six. Further, the shape
03-05-2019
5
of the core piece 8 is not limited to a circular shape, but may be a polygonal shape having the
number of sides corresponding to the number of divisions of the peripheral surface piece.
Furthermore, although the connection between the core piece 6 and the circumferential surface
piece 7 and the circumferential surface piece 7 are performed using the hooking tool 8 in the
above description, instead of this, a member such as a bolt is used. You may do so. [Effects of the
Invention] As described in detail above, in the sound collection device according to the present
invention, the core piece in the center and the peripheral piece formed by dividing the portion
around the core piece in the radial direction are attached and detached. Since the sound collector
assembly is formed by being connected to the rotary part, the sound collector assembly can be
compactly stored, which is convenient for its transportation and storage.
[0002]
Brief description of the drawings
[0003]
1 to 5 show an embodiment of the present invention, FIG. 1 is an external view of the sound
collecting device in an assembled state, FIG. 2 is a front view of FIG. 1, and FIG. Fig. 4 is an
explanatory view of the structure showing the connection between the core piece and the
peripheral surface piece and between the peripheral surface pieces, Fig. 5 is an external view
showing the folded structure of the arm, and Fig. 6 is a sound collector It is principle explanatory
drawing of the sound source search system which used the.
1: Sound collector assembly, 1a: Reflective surface, 2: Macro array, 6: Core piece, 8a, 7a:
Junction, 7: Peripheral part, 8: Hook 1F, 10: Support frame, 17: Tripod , 18: support member, 20:
arm, 22: tightening bolt.
03-05-2019
6
Документ
Категория
Без категории
Просмотров
0
Размер файла
17 Кб
Теги
jps6359099
1/--страниц
Пожаловаться на содержимое документа