KR101934424B1 - Microphone fixing apparatus with reducing function of reflected sound and noise - Google Patents

Abstract

The present invention relates to a microphone fixing apparatus for measuring an aircraft noise which fixes a microphone to measure an aircraft noise. The microphone fixing apparatus for measuring an aircraft noise comprises: a tripod composed of a fixing holder providing an installation region of the microphone and a support leg coupled to a lower end of the fixing holder to provide a support force; and a falling preventing plate coupled to be individually separated to a lower end of the support leg of the tripod to support the ground and preventing the tripod from falling while supporting the ground as the falling preventing plate is formed in a disc form.

Description

TECHNICAL FIELD [0001] The present invention relates to a microphone fixing device for air noise measurement,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microphone fixing fixture for airborne noise measurement, and more particularly, to a microphone fixing device for measuring airborne noise or airborne noise by using a microphone outdoors.

Generally, when measuring aircraft noise or airborne noise, it is required that the distance of 1.0 m ~ 3.5 m or more from the reflector should be in the direction of noise source for most environmental noise measurements in the noise vibration process test standard.

In particular, aircraft noise is to be spaced at least 3.5 m apart. In addition, KS and ISO regulations related to each kind of noise measurement also provide the conditions of measurement so that there is no influence of reflection sound.

Reflections occur when there is a solid object, such as a concrete surface, in the periphery, and can affect noise measurements in these reflector influences in most actual measurement conditions.

Assuming that all of the noise energy incident on the reflector is reflected by the microphone and that all of the noise energy is incident on the reflector during the noise measurement, noise measurement difference of more than 3 dB is shown, which may result in lowering the reliability of the measured value.

Conventionally, a microphone is attached to a long measuring bar to control the phenomenon, and a method of separating the microphone in the direction of the noise source is used so that the distance to the reflector of 3.5 m or more can be distanced.

However, in the conventional measuring method as described above, there is a possibility that the shaking phenomenon depending on the strength of the measurement rod and the degree of the wind load and the size of the support frame supporting the long bar become excessive, and in reality, There is a problem that the reliability of the measured value can not be secured under such a condition.

Particularly, in the related art as described above, the support leg supporting the microphone is unstable, and the microphone is easily broken by an external force such as wind.

Accordingly, there is a need for a new technology thickness measuring device for overcoming the problems of the prior art as described above

Korean Patent Registration No. 10-1048030

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the conventional art as described above, and it is an object of the present invention to provide an installation site of a microphone for measuring airborne noise or aircraft noise, The present invention has been made in view of the above problems.

It is another object of the present invention to provide a microphone fixing device for measuring airborne noise, which can minimize vibrations and reflections generated in the ground while supporting the microphone.

It is also an object of the present invention to provide a microphone fixing device for measuring airborne noise that can automatically adjust the horizontal position of a member supporting the ground.

It is another object of the present invention to provide a microphone fixing device for measuring an airborne noise, which can easily move a noise measurement position together with a support while a microphone is installed.

According to another aspect of the present invention, there is provided a microphone fixing apparatus for measuring airborne noise, which fixes a microphone for measuring airborne noise, A tripod comprising a support for providing a support force to the lower end of the fixture holder; And a conductive plate that supports the ground and is formed in a disk-like shape so as to be detachably coupled to the lower ends of the support legs of the tripods to prevent the tripod from being transmitted while supporting the ground.

In addition, the microphone fixing device may be detachably connected to the lower end of the conduction preventing plate to support the conduction preventing plate in a state of being spaced apart from the paper surface, and the length of the conduction preventing plate may be adjustably coupled to the conduction preventing plate, And a spike that adjusts the horizontal position of the light source.

The microphone fixing device may further include an elevating member for adjusting the level of the conduction plate while rotating the spike screwed to the conduction preventing plate to elevate and lower the spike, A spike sprocket formed of the same body and rotated together with the spike; A motor sprocket for rotating the spike sprocket while being rotated by an external force while being engaged with the spike sprocket and being formed longer than the spike sprocket to allow the spike sprocket to ascend and descend; And a lifting motor for lifting and lowering the spike while forwardly or reversely rotating the motor sprocket.

The microphone fixing device may further include a caster rotatably provided at one end of the conduction preventing plate and allowing movement of the conduction preventing plate while supporting the ground by tilting of the conduction preventing plate .

The microphone fixing device for measuring air noise according to an embodiment of the present invention is capable of stably measuring noise of a microphone by providing a microphone on a tripod including a fixed holder and a supporting leg, Since the plates are installed separately, the microphone can be supported more stably and the tripod can be prevented from being conducted even when an external force such as wind is applied.

In the microphone fixing device for measuring air noise according to an embodiment of the present invention, the microphone fixing device for measuring air noise according to an embodiment of the present invention is provided with a spike on the conduction preventing plate, thereby preventing direct contact of the conduction preventing plate with the ground surface Vibration of the ground or reflection sound can be prevented from being transmitted to the microphone.

In the microphone fixing device for measuring air noise according to an embodiment of the present invention, the length of the spike can be adjusted to the length of the length of the spike, so that the length of the spike can be adjusted.

In addition, in the microphone fixing device for measuring aeronautical noise according to an embodiment of the present invention, since the spike is automatically raised and lowered by the elevating member, the level of the conduction preventing plate can be automatically adjusted.

Further, in the microphone fixing device for measuring aeronautical noise according to an embodiment of the present invention, since the caster installed on the conduction prevention plate is supported on the ground by tilting of the conduction prevention plate, the tripod and the conduction prevention plate It can be easily moved.

The effects obtained in the disclosed embodiments are not limited to the effects mentioned above, and other effects not mentioned are obvious to those skilled in the art to which the embodiments disclosed from the following description belong It can be understood.

1 is a perspective view showing a microphone fixing device for measuring airborne noise according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a state where a microphone is fixed to a microphone fixing device for measuring an airborne noise according to an embodiment of the present invention.
3 is a longitudinal sectional view showing the ascending / descending structure of the spike shown in Fig.
4 is a perspective view illustrating a state in which a caster is installed in a microphone fixing device for measuring aeronautical noise according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. It is to be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Also, terms including ordinal numbers such as first, second, etc. may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ", or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

FIG. 1 is a perspective view showing a microphone fixing device for measuring airborne noise according to an embodiment of the present invention, FIG. 2 is a perspective view showing a state where a microphone is fixed to a microphone fixing device for measuring airborne noise according to an embodiment of the present invention And Fig. 3 is a longitudinal sectional view showing the ascending / descending structure of the spike shown in Fig. 4 is a perspective view illustrating a state in which a caster is installed in a microphone fixing device for measuring airborne noise according to an embodiment of the present invention.

The microphone fixing device for measuring air noise according to an embodiment of the present invention is a device for supporting the microphone 1 in a state of being separated from the ground while providing an installation site of the microphone 1 in measuring air noise or aircraft noise.

Specifically, the microphone fixing device for measuring aeronautical noise according to an exemplary embodiment may include a tripod 100 and a conductive plate 200.

The tripod 100 is a component that supports the microphone 1 in a state spaced apart from the ground.

Specifically, the tripod 100 may be configured to include a fixed holder 110 and a support leg 120.

The fixed holder 110 is a component for providing a mounting portion of the microphone 1.

As shown in FIG. 1, the stationary holder 110 may be formed with a receiving groove so that the microphone 1 can be fitted on the upper surface thereof.

In addition, the fixed holder 110 can be applied to any structure as long as the microphone 1 can be fixed.

For example, the fixed holder 110 may be configured to grasp and fix the microphone 1, and the microphone 1 may be configured to be screwed.

The stationary holder 110 may be connected to the microphone 1 with a cable for power supply and control being inserted into the stationary holder 110.

The support legs 120 are coupled to a lower end of the fixed holder 110 to form a plurality of supporting legs 120, and provide a supporting force in a state of being spread in a triangular shape.

The support legs 120 may be assembled to a lower portion of the fixed holder 110 and fixed in a radially spread state.

The support leg 120 may be rotatably coupled to the stationary holder 110 via a hinge shaft (not shown). The support leg 120 may be rotatably mounted on the stationary holder 110 in a state where the stationary holder 110 rotates about the hinge axis, Lt; / RTI >

Also, the support legs 120 may be formed in a multi-stage telescopic structure so that the lengths of the support legs 120 can be individually adjusted.

The conduction preventing plate 200 is a component for preventing the tripping of the tripod 100 due to an external force such as wind.

Specifically, the conduction preventing plate 200 may be formed in a disc shape having a predetermined width and may be detachably coupled to the lower ends of the support legs 120 constituting the tripod 100, 100 can be prevented from being conducted.

Here, the conduction preventing plate 200 may be formed to have an outer diameter of 5 to 10 times the outer diameter of the support leg 120.

The conduction preventing plate 200 may be detachably coupled to the lower end of the support leg 120 through the coupling member 210.

The coupling member 210 may include a fixing clamp disposed at the center of the conductive plate 200, for example, and may hold and fix the lower end of the supporting leg 120.

The coupling member 210 may be composed of a bolt provided at the lower end of the support leg 120 and a nut formed at the center of the conductive plate 200 and coupled to each other.

As shown in FIG. 3, the coupling member 210 includes a coupling ball formed at the lower end of the support leg 120 and a coupling ball provided at the center of the coupling prevention plate 200 so that the coupling ball is rotatably fitted and fixed And may allow rotation and angle adjustment of the anti-reflection plate 200. [0051] As shown in FIG.

The conduction preventing plate 200 may include a spike 300, as shown in FIG.

The spike 300 is a component that prevents the vibration of the ground or the reflected sound from being transmitted to the microphone 1 by separating the conductive plate 200 from the ground.

The spike 300 has a sharp bottom end and is fixed at predetermined intervals along the circumferential direction of the conductive plate 200 to support the ground while allowing the conductive plate 200 to be spaced apart from the ground.

Further, the spike 300 may be formed so as to have a sharp bottom end, thereby preventing slippage on the ground.

Here, the coupling length can be adjusted while the spike 300 is screwed to the conductive plate 200.

Accordingly, the plurality of spikes 300 may adjust the horizontal of the conduction preventing plate 200 by adjusting the coupling length.

3, the spike 300 may be automatically lifted and lowered by the lifting member 350 in a state where the spike 300 is screwed to the conduction preventing plate 200 as shown in FIG. 3, thereby adjusting the level of the conduction preventing plate 200.

Specifically, the lifting member 350 may be configured to include a spike sprocket 351, a motor sprocket 352, and a lifting motor 353.

The spike sprocket 351 may be formed integrally with the upper end of the spike 300 and may be moved together with the spike 300 while rotating together with the spike 300 by a motor sprocket 352 described later.

The motor sprocket 352 is a component that rotates the spike 300 by rotating the spike sprocket 351 while being rotated by a lift motor 353 which is engaged with the spike sprocket 351 to be described later.

The motor sprocket 352 is formed to have a longer length than the spike sprocket 351 as shown in Fig. 3, thereby allowing the spike sprocket 351 to move up and down through rotation.

That is, the spike sprocket 351 can be moved up and down along the longitudinal direction of the motor sprocket 352 while being rotated by the motor sprocket 352.

The lifting motor 353 is coupled to the motor sprocket 352 to lift and lower the spike 300 while rotating the motor sprocket 352 forward or reverse.

The lifting motor 353 can be operated by the user's control to raise and lower the spike 300. [

Alternatively, the lifting motor 353 may be operated by the sensing signal of the horizontal sensing sensor 360, as shown in FIG. 3, to raise and lower the spike 300.

The horizontal sensing sensor 350 may include a tilt sensor or an IMU sensor, for example, and may operate the elevating motor 353 while sensing the horizontal state of the conductive plate 200. [

Meanwhile, as shown in FIG. 4, the caster 400 may be installed on the conduction preventing plate 200.

The caster 400 is a constituent element for moving the conduction preventing plate 200.

Specifically, the caster 400 is rotatably installed at one end of the conduction preventing plate 200, and supports the ground when the conduction preventing plate 200 is tilted to allow movement of the conduction preventing plate 200 .

That is, the conduction prevention plate 200 can move together with the microphone 1 and the tripod 100 by supporting the ground surface through the caster 400 while being inclined by the user together with the tripod 100 when moving.

As described above, according to the microphone fixing apparatus for measurement of aeronautical noise according to the embodiment, since the electromagnetic shielding plates 200 are installed on each of the support legs 120 of the tripod 100, The tripod 100 can be prevented from being conducted even when an external force such as wind is applied and when the spike 300 is provided on the conductive plate 200, And it is possible to adjust the level of the anti-reflection plate 200.

It will be apparent to those skilled in the art that the above-described embodiments are for illustrative purposes only and that those skilled in the art will readily understand that various changes and modifications can be made without departing from the spirit or scope of the present invention. You will understand. It is therefore to be understood that the above-described embodiments are to be considered in all respects only as illustrative and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

It is to be understood that the scope of the present invention is defined by the appended claims rather than the foregoing description and should be construed as including all changes and modifications that come within the meaning and range of equivalency of the claims, .

1: microphone
100: Tripod
110: Fixed holder
120: Support leg
200: Anti-slip plate
210:
300: Spike
350:
351: spike sprocket
352: Motor sprocket
353: Lift motor
360: Horizontal Sensing Sensor
400: castor

Claims (3)

1. A microphone fixing device for measuring an airborne noise, the microphone fixing a microphone for measuring an airborne noise,
A tripod including a fixed holder for providing an installation site of the microphone, and a support leg coupled to a lower end of the fixed holder to provide a supporting force; And
And a conductive plate for supporting the ground surface, the conductive plate being formed in a disk shape to prevent the tripod from being transmitted while supporting the ground,
The microphone fixing device includes:
A spike detachably coupled to a lower end of the conduction prevention plate to support the conduction prevention plate in a state spaced apart from the ground and to adjust the level of the conduction prevention plate to be adjustable in length;
And a lifting member for adjusting the level of the conductive plate while lifting up and down the spike screwed to the conductive plate,
The elevating member
A spike sprocket formed integrally on the upper end of the spike and rotated together with the spike;
A motor sprocket for rotating the spike sprocket while being rotated by an external force while being engaged with the spike sprocket and being formed longer than the spike sprocket to allow the spike sprocket to ascend and descend; And
And a lifting motor for lifting and descending the spike while rotating or rotating the motor sprocket forward or backward.
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