Variable reverberation acoustic laboratory construction

Abstract

The invention discloses a variable reverberation acoustic laboratory structure, which comprises a laboratory body and an environment conversion mechanism, the laboratory body comprises a first body, an experiment space is formed in the first body and is used for carrying out an acoustic experiment, and the environment conversion mechanism is arranged in the experiment space and comprises a plurality of driving units and a plurality of conversion columns, at least one conversion column can be synchronously and rotatably installed on one driving unit, the peripheral side of each conversion column is provided with a sound absorption part and a reflection part arranged on the back face of the sound absorption part, each sound absorption part is made of a sound absorption material, each reflection part is made of a sound reflection material, and the conversion columns are arranged on the back face of the sound absorption part. Furthermore, when the plurality of conversion columns rotate by a preset angle through the driven unit, a semi-anechoic chamber sound field environment and a reverberation chamber sound field environment can be formed in the first body, so that the experiment requirements of different acoustic environments are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of acoustic laboratory, in particular to a variable reverberation acoustic laboratory structure. BACKGROUND

[0002] An acoustic laboratory is a place for acoustic research or environmental acoustic research, which mainly provides an acoustic environment meeting certain standards for testing product acoustic technical indicators, etc., and a semi-anechoic chamber and a reverberation chamber are two commonly used acoustic laboratories, and the semi-anechoic chamber and the reverberation chamber are respectively used to simulate a free sound field and a reverberation time.

[0003] At present, the traditional semi-anechoic chamber and the traditional reverberation chamber are mostly two experimental places established separately, and the establishment of two experimental places separately usually occupies a large ground space. In addition, when an acoustic research needs to use both the semi-anechoic chamber and the reverberation chamber, the researchers have to carry the instruments used for acoustic research from one experimental place to another, which will additionally increase the experimental time cost, and it is also more troublesome for the researchers to repeatedly carry the instruments. SUMMARY

[0004] To solve the above technical problems and achieve at least one advantage of the present application, the present application provides a variable reverberation acoustic laboratory structure, wherein the variable reverberation acoustic laboratory structure comprises:

[0005] a laboratory body, the laboratory body comprising a first body, the first body comprising a top wall, a bottom wall, a side wall and a reflection layer, the side wall being arranged in a ring shape, and the side wall being arranged between the top wall and the bottom wall and connected with both the top wall and the bottom wall, so that the inside of the first body forms an experimental space, and the reflection layer is made of a reflection material and is installed on the bottom wall and located in the experimental space;

[0006] an environment conversion mechanism, the environment conversion mechanism comprising a plurality of driving units and a plurality of conversion columns, the plurality of driving units being installed on the first body, a part of the plurality of conversion columns being installed on the top of the experimental space, and another part of the plurality of conversion columns being installed on the periphery of the experimental space, and at least one conversion column being synchronously rotatably installed on one driving unit, and the periphery of each conversion column having a sound absorption part and a reflection part arranged on the back of the sound absorption part, each sound absorption part being made of a sound absorption material, and each reflection part being made of a reflection sound material;

[0007] When the plurality of driving units drive the plurality of conversion columns to rotate a predetermined angle, so that at least one sound absorbing part arranged on the top of the first body faces the top wall, and at least one sound absorbing part arranged on the side of the first body faces the side wall, the interior of the first body forms a reverberation chamber sound field environment; and when the plurality of driving units drive the plurality of conversion columns to rotate a predetermined angle, so that at least one reflecting part arranged on the top of the first body faces the top wall, and at least one reflecting part arranged on the side of the first body faces the side wall, the interior of the first body forms a semi-muffled sound chamber sound field environment.

[0008] According to an embodiment of the present application, each of the driving units comprises a driving member and a transmission member, wherein one of the transmission members is drivingly mounted on one of the driving members, and one of the transmission members drives at least one of the conversion columns to rotate by being driven by one of the driving members, so that the interior of the first body is switched from a reverberation chamber sound field environment to a semi-muffled sound chamber sound field environment, or from a semi-muffled sound chamber sound field environment to a reverberation chamber sound field environment.

[0009] According to an embodiment of the present application, a part of the driving members are mounted on the top wall of the first body to drive at least one of the conversion columns arranged on the side of the first body to rotate, and another part of the driving members are mounted on the side wall of the first body to drive at least one of the conversion columns arranged on the top of the first body to rotate.

[0010] According to an embodiment of the present application, the interior of each of the conversion columns forms a cavity, and a plurality of support parts are uniformly and spacedly arranged in the respective cavity of each of the conversion columns, and the plurality of support parts are all arranged to be made of hard material, and a filling part is arranged in the respective cavity of each of the conversion columns, the filling part of each of the conversion columns is arranged to be made of sound absorbing material, and the filling part fills the cavity and is kept between the sound absorbing part and the reflecting part.

[0011] According to an embodiment of the present application, the reflecting part of each of the conversion columns comprises an inner layer and an outer layer, wherein the inner layer is fixedly connected with at least one of the support parts and constitutes at least part of the inner wall of the cavity, and the inner layer is arranged to be made of sound insulation material, the outer layer is arranged to be made of sound reflecting material, and the outer layer is connected with the inner layer and kept at the outermost part of the conversion column.

[0012] According to an embodiment of the present application, the laboratory body further comprises a second body, the second body is arranged in a surrounding manner outside the first body, and a cavity is formed between the outer wall of the first body and the inner wall of the second body at a predetermined distance to achieve sound insulation.

[0013] According to one embodiment of this application, the second body further includes an upper part and a lower part, wherein the upper part is connected above the lower part to form an accommodating space communicating with the cavity inside the second body, the first body is housed in the accommodating space, the lower part is disposed below the bottom wall of the first body, the upper part of the second body is configured to be composed of bricks and mortar, and the lower part of the second body is configured to be composed of concrete material.

[0014] According to one embodiment of this application, the lower part of the second body further forms a groove communicating with the receiving space, and the laboratory body further includes a vibration damping body, the vibration damping body including a vibration damping block and a rigid plate, wherein the vibration damping block is made of rubber material and is installed in the groove of the lower part, and the vibration damping block further forms a receiving groove communicating with the receiving space, the rigid plate is made of rigid material and is installed in the receiving groove of the vibration damping block, and the rigid plate is configured to abut against the bottom wall of the first body.

[0015] According to one embodiment of this application, the vibration damping body further includes a waterproof block, which is made of waterproof material and is installed between the bottom wall of the first body and the rigid plate. The waterproof block is also connected to both the bottom wall and the rigid plate, and the rigid plate is configured to abut against the bottom wall of the first body via the waterproof block.

[0016] According to one embodiment of this application, the first body forms a first inlet / outlet at the bottom of the side wall, the first inlet / outlet being connected to the experimental space; the second body forms a second inlet / outlet at the bottom of the upper body, the second inlet / outlet being aligned with the first inlet / outlet; the laboratory body also forms an access channel, the access channel being formed between the first inlet / outlet and the second inlet / outlet, and the two ports at both ends of the access channel being connected to the first inlet / outlet and the second inlet / outlet, respectively. Attached Figure Description

[0017] Figure 1 A perspective view of the construction of the variable reverberation acoustic laboratory described in this application is shown.

[0018] Figure 2 A cross-sectional view of the variable reverberation acoustic laboratory structure described in this application is shown. Figure 1 .

[0019] Figure 3 for Figure 2 An enlarged view of point A in the variable reverberation acoustic laboratory structure shown.

[0020] Figure 4 A cross-sectional view of the variable reverberation acoustic laboratory structure described in this application is shown. Figure 2 .

[0021] Figure 5 for Figure 4 An enlarged view of point B in the variable reverberation acoustic laboratory structure shown.

[0022] Figure 6 A cross-sectional view of the variable reverberation acoustic laboratory structure described in this application is shown. Figure 3 .

[0023] Figure 7 A schematic diagram of the environmental conversion mechanism of the variable reverberation acoustic laboratory construction described in this application is shown.

[0024] Figure 8 A schematic diagram of another embodiment of the conversion column in the environmental conversion mechanism of the variable reverberation acoustic laboratory construction described in this application is shown. Detailed Implementation

[0025] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0026] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0028] refer to Figures 1 to 2 A preferred embodiment of the variable reverberation acoustic laboratory structure according to this application will be described in detail below, the variable reverberation acoustic laboratory structure including a laboratory body 10 and an environmental conversion mechanism 20.

[0029] In detail, the laboratory body 10 comprises a first body 11, wherein the first body 11 comprises a top wall 111, a bottom wall 112 and a side wall 113. The side wall 113 is arranged in a ring shape, and the side wall 113 is arranged between the top wall 111 and the bottom wall 112 and connected with the top wall 111 and the bottom wall 112, so that an interior of the first body 11 forms an experimental space 1101. The experimental space 1101 is used for researchers to perform acoustic experimental operations. In addition, the laboratory body 10 further comprises a reflection layer 114, which is made of a reflection material and is installed on the bottom wall 112 and located in the experimental space 1101.

[0030] The environmental conversion mechanism 20 comprises a plurality of driving units 21 and a plurality of conversion columns 22, wherein the plurality of driving units 21 are all installed on the first body 11. Part of the plurality of conversion columns 22 are arranged at the top of the experimental space 1101, and another part of the plurality of conversion columns 22 are arranged at the side of the experimental space 1101. At least one conversion column 22 is synchronously rotatably installed on one driving unit 21, and each conversion column 22 has a sound absorbing part 221 and a reflection part 222 arranged on the back of the sound absorbing part 221 at the side of the conversion column 22. Each sound absorbing part 221 is made of sound absorbing material, such as glass wool. Each reflection part 222 is made of sound reflecting material, such as aluminum foil.

[0031] Further, when the driving units 21 drive the conversion columns 22 to rotate by a predetermined angle, at least one sound absorbing part 221 arranged on the top of the first body 11 faces the top wall 111, and at least one sound absorbing part 221 arranged on the side of the first body 11 faces the side wall 113, that is, at least one sound reflecting part 222 arranged on the top of the first body 11 faces away from the top wall 111, and at least one sound reflecting part 222 arranged on the side of the first body 11 faces away from the side wall 113, at this time, the inside of the first body 11 forms a reverberation chamber sound field environment; when the driving units 21 drive the conversion columns 22 to rotate by a predetermined angle, at least one sound reflecting part 222 arranged on the top of the first body 11 faces the top wall 111, and at least one sound reflecting part 222 arranged on the side of the first body 11 faces the side wall 113, that is, at least one sound absorbing part 221 arranged on the top of the first body 11 faces away from the top wall 111, and at least one sound absorbing part 221 arranged on the side of the first body 11 faces away from the side wall 113, at this time, the inside of the first body 11 forms a semi-anechoic chamber sound field environment.

[0032] Those skilled in the art can understand that when the driving units 21 are started, each conversion column 22 rotates by a predetermined angle along its own axis direction under the driving action of the driving unit 21, so that the sound absorbing part 221 and the sound reflecting part 222 of each conversion column 22 are synchronously driven to rotate by a predetermined angle, so that the sound absorbing part 221 or the sound reflecting part 222 of each conversion column 22 can be rotated to face the inner wall of the first body 11, thereby forming a reverberation chamber sound field environment or a semi-anechoic chamber sound field environment in the inside of the first body 11.

[0033] Compared with the prior art of independently constructing a reverberation chamber sound field environment and a semi-anechoic chamber sound field environment, the present application only needs to switch the inside of the first body 11 between a reverberation chamber sound field environment and a semi-anechoic chamber sound field environment through the conversion action of the conversion columns 22 in the environment conversion mechanism 20. Therefore, the present application not only occupies less floor space, but also can switch between a reverberation chamber acoustic environment and a semi-anechoic chamber acoustic environment according to the same acoustic research experiment, thereby omitting the step of researchers carrying instruments for acoustic experiments, reducing additional time consumption, and improving experimental efficiency.

[0034] In one embodiment, the number of the driving units 21 is set to be the same as the number of the conversion columns 22, i.e., a part of the driving units 21 is installed on the top wall 111 of the first body 11, and another part of the driving units 21 is installed on the side wall 113 of the first body 11, and one conversion column 22 is rotatably installed on one driving unit 21. It is worth mentioning that in the present embodiment, each driving unit 21 is implemented to include a driving motor for driving the conversion column 22 to rotate by a predetermined angle. In addition, as a variation, a part of the driving units 21 can also be installed on the bottom wall 112 of the first body 11, and another part of the driving units 21 is installed on the side wall 113 of the first body 11, and one conversion column 22 is rotatably installed on one driving unit 21, i.e., a part of the driving units 21 for driving the plurality of conversion columns 22 arranged on the side of the first body 11 to rotate can be installed on the top wall 111 or the bottom wall 112 of the first body 11.

[0035] In another embodiment, as shown in Figure 2 , Figure 4 , Figure 6 and Figure 7 each driving unit 21 includes a driving member 211 and a transmission member 212, wherein one transmission member 212 is drivingly installed on one driving member 211, and one transmission member 212 drives at least one conversion column 22 to rotate by being driven by one driving member 211, so as to switch the interior of the first body 11 from the reverberation chamber sound field environment to the semi-anechoic chamber sound field environment, or from the semi-anechoic chamber sound field environment to the reverberation chamber sound field environment.

[0036] Preferably, a portion of the plurality of driving members 211 are mounted on the top wall 111 of the first body 11 to drive at least one of the conversion columns 22 disposed around the first body 11 to rotate, and another portion of the plurality of driving members 211 are mounted on the side wall 113 of the first body 11 to drive at least one of the conversion columns 22 disposed on the top of the first body 11 to rotate. Alternatively, a portion of the plurality of driving members 211 are mounted on the bottom wall 112 of the first body 11 to drive at least one of the conversion columns 22 disposed around the first body 11 to rotate, and another portion of the plurality of driving members 211 are mounted on the side wall 113 of the first body 11 to drive at least one of the conversion columns 22 disposed on the top of the first body 11 to rotate.

[0037] It is worth mentioning that each of the driving components 211 is implemented to include a drive motor, and the drive motor has a rotatable drive end, and the drive end of the drive motor is connected to the transmission member 212, so that when the drive motor is started to rotate the drive end, the transmission member 212 is driven to drive at least one of the conversion columns 22 to rotate.

[0038] Preferably, each transmission component 212 includes multiple pairs of driving members 2121 and multiple transmission members 2122, wherein only one driving member 2121 in each transmission component 212 is synchronously rotatably connected to one driving member 211, and two transmission members 2122 in each pair of driving members 2121 are rolledly supported in the inner ring of the same transmission member 2122 in an engaging manner, and one driving member 2121 is fixedly connected to one conversion column 22, so that when the driving member 2121 is driven to rotate, the transmission member 2122 is driven to rotate at least one driving member 2121, so that at least one conversion column 22 rotates synchronously by a predetermined angle.

[0039] It should be noted that the reference Figure 2 and Figure 6 As shown, the sidewall 113 of the laboratory body 10 surrounds a space forming a rectangular structure, that is, the sidewall 113 is divided into four parts, and the number of driving units 21 is set to four, for driving at least one of the conversion columns 22 installed in the four parts of the sidewall 113 respectively. Specifically, the number of driving members 211 is four, that is, the four driving members 211 drive the transmission members 212 connected to them respectively to rotate at least one of the conversion columns 22 installed in the four parts of the sidewall 113.

[0040] As preferred, the belt driver 2121 in each of the transmission members 212 is provided as a sprocket, and the transmission member 2122 in each of the transmission members 212 is provided as a chain. In other words, as an example, each of the transmission members 212 is implemented to include a sprocket transmission device.

[0041] Preferably, the sound absorbing part 221 of each of the conversion columns 22 has a sound absorbing surface 22101 in the shape of a wedge, and when the first body 11 is switched to a semi-anechoic chamber sound field environment inside, each of the sound absorbing parts 221 reduces the reflection and interference of sound waves through the respective sound absorbing surface 22101 to form a semi-anechoic chamber sound field environment.

[0042] Preferably, the reflecting part 222 of each of the conversion columns 22 has an arc-shaped reflecting surface 22201 convexly away from the respective sound absorbing part 221, and when the first body 11 is switched to a reverberation chamber sound field environment inside, each of the reflecting parts 222 uniformly diffuses sound through the respective arc-shaped reflecting surface 22201 to form a better reverberation chamber sound field environment.

[0043] In another embodiment, as shown in Figure 8 The inside of each of the conversion columns 22 forms a cavity 2201, and a plurality of supporting parts 223 are uniformly and spacedly arranged in the respective cavity 2201 of each of the conversion columns 22, and each of the supporting parts 223 is provided by a hard material, such as a wooden frame, etc., to maintain the structural stability of the conversion column 22.

[0044] Preferably, each of the conversion columns 22 further has a filling part 224 arranged in the respective cavity 2201, the filling part 224 is installed in the cavity 2201 by filling and is kept between the sound absorbing part 221 and the reflecting part 222, and the filling part 224 of each of the conversion columns 22 is provided by a sound absorbing material, such as glass wool. In this way, when part of the sound passes through the sound absorbing part 221 or the reflecting part 222 through the installation gap and passes through the inner cavity 2201, the filling part 224 arranged in the cavity 2201 will absorb this part of the sound to prevent them from continuing to propagate to the outside of the laboratory body 10.

[0045] Preferably, the reflecting part 222 of each of the conversion columns 22 comprises an inner layer 2221 and an outer layer 2222, wherein the inner layer 2221 is fixedly connected with at least one of the supporting parts 223 and constitutes at least part of the inner wall of the cavity 2201, and the inner layer 2221 is made of sound insulation material, such as plywood. The outer layer 2222 is connected with the inner layer 2221 and is kept at the outermost part of the conversion column 22, and the outer layer 2222 is made of sound reflecting material, such as a sound reflecting decorative panel.

[0046] Further, the environment conversion mechanism 20 further comprises a plurality of filling strips, one of which is installed at the outside of one of the conversion columns 22 and kept at the joint between the sound absorbing part 221 and the reflecting part 222, and each of the filling strips is made of sound reflecting elastic material, such as a rubber strip. Therefore, when each of the conversion columns 22 rotates to switch the sound field environment in the experimental space 1101, each of the filling strips rotates synchronously with the respective connected conversion column 22 and gradually abuts against the outer wall of the other conversion column 22, so that the installation gap between the two conversion columns 22 is filled.

[0047] It should be noted that, under normal circumstances, there will be an installation gap between two adjacent conversion columns 22, and a small part of the sound generated in the experimental space 1101 will directly propagate outward through the installation gap, thereby affecting the sound field environment effect formed in the experimental space 1101. Therefore, by arranging a filling strip in the installation gap between two adjacent conversion columns 22, the purpose of filling the installation gap is achieved, thereby reducing the propagation of part of the sound from the installation gap to improve the sound field environment effect. In addition, the position for installing the filling strip on each of the conversion columns 22 is fixed, so that the filling strips on two adjacent conversion columns 22 will not interfere with each other.

[0048] Further, the environment conversion mechanism 20 further comprises a plurality of supply members 23, preferably, as shown in Figure 7 Each of the supply members 23 has a rotatable inner ring for connecting with one end of one of the conversion columns 22.

[0049] It is worth mentioning that in one embodiment in which one of the driving units 21 drives one of the conversion columns 22 to rotate, some of the plurality of the rotation providing members 23 are mounted on the top wall 111 or the bottom wall 112 of the first body 11 to correspondingly mount the other end of at least one of the conversion columns 22 disposed on the side of the first body 11 away from the driving unit 21, and the other of the plurality of the rotation providing members 23 are mounted on the side wall 113 of the first body 11 to correspondingly mount the other end of at least one of the conversion columns 22 disposed on the top of the first body 11 away from the driving unit 21. In one embodiment in which the driving member 211 drives at least one of the conversion columns 22 to rotate by driving the transmission member 212, two ends of each of the conversion columns 22 are respectively provided for mounting two of the rotation providing members 23.

[0050] As preferred, each of the rotation providing members 23 is provided as a bearing.

[0051] It is worth mentioning that the top wall 111, the bottom wall 112 and the side wall 113 of the first body 11 are all provided by a concrete material.

[0052] Preferably, the laboratory body 10 further comprises a second body 12, as shown in Figure 2 and Figure 4 The second body 12 is provided in a surrounding manner outside the first body 11, and a predetermined distance is formed between the outer wall of the first body 11 and the inner wall of the second body 12 to form a cavity 1001 for sound insulation.

[0053] It is worth mentioning that when the interior of the first body 11 is switched to a semi-anechoic chamber sound field environment or a reverberation chamber sound field environment, due to the sound insulation effect of the cavity 1001, the sound insulation effect of the laboratory body 10 is further improved to prevent interference with the environment outside the laboratory body 10.

[0054] Preferably, the second body 12 further comprises an upper part 121 and a lower part 122, wherein the upper part 121 is connected above the lower part 122 to form an accommodation space 1201 inside the second body 12 in communication with the cavity 1001 to accommodate the first body 11. The lower part 122 is disposed below the bottom wall 112 of the first body 11.

[0055] As preferred, the upper part 121 of the second body 12 is provided by bricks and mortar, and the lower part 122 of the second body 12 is provided by a concrete material.

[0056] Further, the laboratory body 10 further comprises a damping body 13, which is configured to prevent external vibration from interfering with the acoustic experiment conducted inside the first body 11, so as to ensure the stability of the experimental environment.

[0057] Preferably, the lower part 122 of the second body 12 further forms a groove 12201 which is in communication with the accommodating space 1201, and is configured to accommodate the bottom wall 112 of the first body 11 and the damping body 13.

[0058] In one embodiment, the damping body 13 comprises a damping block 131 and a rigid plate 132, wherein the damping block 131 is made of rubber material, and is mounted in the groove 12201 of the lower part 122, and further forms a receiving groove 13101 which is in communication with the accommodating space 1201, and is configured to receive the rigid plate 132. The rigid plate 132 is made of hard material, such as patterned steel plate, and is mounted in the receiving groove 13101 of the damping block 131, and is configured to support the bottom wall 112 of the first body 11.

[0059] Preferably, the damping body 13 further comprises a waterproof block 133, which is preferably made of waterproof material, such as PE waterproof material, etc. The waterproof block 133 is mounted between the bottom wall 112 of the first body 11 and the rigid plate 132, and is connected with both the bottom wall 112 and the rigid plate 132, and the rigid plate 132 is configured to abut against the bottom wall 112 of the first body 11 through the waterproof block 133, as shown in the drawings. Figure 3

[0060] Further, the first body 11 forms a first access port 1102 at the bottom of the side wall 113, which is in communication with the experimental space 1101. Correspondingly, the second body 12 forms a second access port 1202 at the bottom of the upper part 121, which is configured to be aligned with the first access port 1102. The laboratory body 10 further forms an access channel 1002, which is formed between the first access port 1102 and the second access port 1202, and two ports at both ends of the access channel 1002 are in communication with the first access port 1102 and the second access port 1202, respectively. In this way, the experimental personnel can enter the access channel 1002 from the second access port 1202, and then enter the experimental space 1101 from the first access port 1102 to conduct the acoustic experiment. ​

[0061] Further, the laboratory body 10 further comprises at least one door body 14, wherein the door body 14 is used to open and close the access passage 1002.

[0062] In a preferred embodiment, as shown in the drawings, the number of the door body 14 is set to two, and both of the door body 14 are made of soundproof material, such as steel material. One of the door body 14 among the two door body 14 is reversibly installed on the first access port 1102 of the first body 11, to close and open the first access port 1102, and the other of the door body 14 among the two door body 14 is reversibly installed on the second access port 1202 of the second body 12, to close and open the second access port 1202. That is, the two door body 14 are spaced apart relative to the two end positions of the access passage 1002, so as to improve the soundproof effect. Figure 4

[0063] It is worth mentioning that the laboratory personnel can reversibly turn the two door body 14, so as to correspondingly open and close the first access port 1102 and the second access port 1202, so that the laboratory personnel can enter and exit the laboratory body 10 at any time. In addition, the peripheral edge position of each door body 14 is provided with elastic material, such as adhesive tape, so that when the door body 14 closes the first access port 1102 and the second access port 1202, the first access port 1102 and the second access port 1202 can be completely closed to ensure the sealing, so as to improve the soundproof effect.

[0064] Further, the variable reverberation laboratory structure further comprises a ventilation assembly 30, which is used to adjust the air flow condition inside the first body 11, so as to meet the requirement that the laboratory personnel can stay inside the first body 11 for a long time.

[0065] ​Preferably, the ventilation assembly 30 comprises an air conditioning unit 31, and as preferred, the air conditioning unit 31 has an air inlet pipe 311 and an air outlet pipe 312, wherein the air inlet pipe 311 extends at least partially from outside of the laboratory body 10 into the interior of the first body 11 to communicate with the experiment space 1101, and the air conditioning unit 31 is configured to supply air to the experiment space 1101 through the air inlet pipe 311. The air outlet pipe 312 extends at least partially from outside of the laboratory body 10 into the interior of the first body 11 to communicate with the experiment space 1101, and the air conditioning unit 31 is configured to recover air in the experiment space 1101 through the air outlet pipe 312. In this way, the air conditioning unit 31 can supply air through the air inlet pipe 311 and recover air through the air outlet pipe 312 to adjust the air flow condition in the interior of the first body 11.

[0066] Preferably, the air conditioning unit 31 is arranged outside of the laboratory body 10, and the air conditioning unit 31 is implemented to comprise an air conditioning system. It is worth mentioning that the air conditioning unit 31 is further provided with a sound reduction structure, such as sound absorbing cotton, in the internal passage of each of the air inlet pipe 311 and the air outlet pipe 312 to reduce the noise generated by air flow.

[0067] Preferably, the air inlet pipe 311 has at least two air inlet branch pipe portions 3111, and the at least two air inlet branch pipe portions 3111 are respectively arranged to extend into the experiment space 1101 from different positions to enable the air inlet pipe 311 to communicate with the experiment space 1101, i.e., the air supplied by the air conditioning unit 31 is finally introduced into the experiment space 1101 through the at least two air inlet branch pipe portions 3111 after being introduced into the air inlet pipe 311 to complete the air supply operation.

[0068] Preferably, the air outlet pipe 312 has at least two air outlet branch pipe portions 3121, and the at least two air outlet branch pipe portions 3121 are respectively arranged to extend into the experiment space 1101 from different positions to enable the air outlet pipe 312 to communicate with the experiment space 1101, i.e., when the air conditioning unit 31 recovers air, the air in the experiment space 1101 is sucked into the air outlet pipe 312 from the at least two air outlet branch pipe portions 3121 to complete the air recovery operation.

[0069] Preferably, as Figure 6As shown, the ventilation assembly 30 further comprises at least two first air passing units 32 and at least two second air passing units 33. Each of the first air passing units 32 has a first air passing opening 3201 and a first inner cavity 3202 in communication with the first air passing opening 3201, and the first air passing opening 3201 is in communication with the experimental space 1101. The first inner cavity 3202 of each of the first air passing units 32 is arranged in communication with a port of one of the inlet branch pipe sections 3111 of the inlet pipe 311. Thus, the air supplied by the air conditioning unit 31 flows through the entire inlet pipe 311, then through the first air passing units 32, and finally enters the experimental space 1101.

[0070] Each of the second air passing units 33 has a second air passing opening 3301 and a second inner cavity 3302 in communication with the second air passing opening 3301, and the second air passing opening 3301 is in communication with the experimental space 1101. The second inner cavity 3302 of each of the second air passing units 33 is arranged in communication with a port of one of the outlet branch pipe sections 3121 of the outlet pipe 312. Thus, when the air conditioning unit 31 is operating in the return air mode, the air in the experimental space 1101 is guided to be sucked from the second air passing units 33 into the outlet pipe 312, thereby completing the return air operation.

[0071] More preferably, each of the first air passing units 32 further has a first sound absorbing portion 321 arranged in the first inner cavity 3202, and the first sound absorbing portion 321 of each of the first air passing units 32 is made of sound absorbing material, such as mineral wool or the like. In addition, the first sound absorbing portion 321 of each of the first air passing units 32 is arranged at the first air passing opening 3201 of the first air passing unit 32, so as to reduce the noise generated by the air flow. Correspondingly, each of the second air passing units 33 further has a second sound absorbing portion 331 arranged in the second inner cavity 3302, and the second sound absorbing portion 331 of each of the second air passing units 33 is made of sound absorbing material, such as mineral wool or the like. In addition, the second sound absorbing portion 331 of each of the second air passing units 33 is arranged at the second air passing opening 3301 of the second air passing unit 33, so as to reduce the noise generated by the air flow.

[0072] Further preferably, the ventilation assembly 30 further comprises a mounting body 34. As preferred, the mounting body 34 is arranged outside the laboratory body 10, and the mounting body 34 has a mounting space 3401 arranged inside, for mounting the air conditioning unit 31.

[0073] It is worth mentioning that the installation body 34 is made of reinforced concrete material, and the installation body 34 further has a structure made of sound insulation material surrounding the air conditioning unit 31 to enclose the air conditioning unit 31, so that the air conditioning unit 31 in operation is noise-reduced.

[0074] In addition, the variable reverberation laboratory structure further includes an experimental assembly 40 for testing the half-anechoic room sound field environment and the reverberation room sound field environment formed inside the first body 11.

[0075] Preferably, the experimental assembly 40 includes a carrier 41 and a controller 42, wherein the carrier 41 and the controller 42 are arranged in the experimental space 1101 of the first body 11, and the carrier 41 is controllably connected to the controller 42, and the controller 42 is arranged to be capable of controlling the carrier 41 to start and stop.

[0076] It can be understood that when the first body 11 inside is switched to a half-anechoic room sound field environment by the environment conversion mechanism 20, the experimenter can control the carrier 41 to start through the controller 42, at which time the experimenter measures the corresponding sound data of the carrier 41 starting by a test tool; and when the first body 11 inside is switched to a reverberation room sound field environment by the environment conversion mechanism 20, the experimenter can also control the carrier 41 to start through the controller 42, at which time the experimenter measures the corresponding sound data of the carrier 41 starting by a test tool.

[0077] Preferably, the carrier 41 is implemented to include but not limited to a fuel vehicle.

[0078] Further, the experimental assembly 40 further includes an exhaust discharge member 43. Preferably, the exhaust discharge member 43 includes a transmission pipeline 431, wherein the transmission pipeline 431 is made of hard material such as stainless steel material. One end of the transmission pipeline 431 is arranged to be communicated with an exhaust outlet of the carrier 41, and the other end of the transmission pipeline 431 is arranged to extend from the experimental space 1101 to the outside of the laboratory body 10, so that the exhaust gas generated by the carrier 41 can be discharged from the exhaust outlet thereof to the outside of the laboratory body 10 through the transmission pipeline 431.

[0079] It is understood that the transmission pipe 431 and the exhaust outlet of the vehicle 41 are kept in a sealed connection. When the vehicle 41 is set as a fuel vehicle for experimental testing, the vehicle 41 will generate exhaust gas during startup. If this exhaust gas is not discharged, it will be discharged into the experimental space 1101, thus affecting the internal air quality of the experimental space 1101. Therefore, the exhaust gas generated by the vehicle 41 can be guided to be directly discharged into the experimental space 1101 through the transmission pipe 431 of the exhaust gas discharge component 43.

[0080] More preferably, the exhaust gas discharge component 43 further includes a sound insulation layer 432. The sound insulation layer 432 is made of a sound insulation material, such as glass wool felt, and is installed on the outer wall of the transmission pipe 431 in a wrapping manner. The sound insulation layer 432 extends from one end of the transmission pipe 431 to the other end, that is, one end of the sound insulation layer 432 is located in the experimental space 1101, and the other end extends from the experimental space 1101 to the outside of the laboratory body 10. In this way, when the exhaust gas flows in the internal channel of the transmission pipe 431, the noise level generated during the exhaust gas discharge process is reduced due to the sound insulation effect of the sound insulation layer 432.

[0081] More preferably, the exhaust gas discharge component 43 further includes a protective layer 433, which is made of a rigid material, such as stainless steel, and is installed on the outer wall of the sound insulation layer 432 in a wrapping manner. The protective layer 433 is provided to extend from one end of the sound insulation layer 432 to the other end of the sound insulation layer 432. That is, one end of the protective layer 433 is provided in the experimental space 1101, and the other end extends from the experimental space 1101 to the outside of the laboratory body 10, thereby protecting the sound insulation layer 432 from damage.

[0082] More preferably, such as Figure 5 As shown, the exhaust gas discharge component 43 further includes a silencing unit 434, wherein the silencing unit 434 is installed in a port connecting the transmission pipe 431 and the exhaust gas outlet of the carrier 41, to further reduce the noise level generated during exhaust gas discharge. More preferably, the silencing unit 434 is implemented as a muffler.

[0083] Those skilled in the art will understand that the above description and the accompanying drawings are only examples of the embodiments of the present application and do not limit the present application. The advantages of the present application have been fully and effectively achieved. The functional and structural principles of the present application have been shown and described in the embodiments, and the embodiments of the present application can be modified or changed in any way without departing from the principles.

Claims

1. A variable reverberation acoustic laboratory structure, characterized in that, The variable reverberation acoustic laboratory structure includes: The laboratory body includes a first body, which includes a top wall, a bottom wall, a side wall, and a reflective layer. The side wall is annular and is disposed between the top wall and the bottom wall, and is connected to both the top wall and the bottom wall, so that an experimental space is formed inside the first body. The reflective layer is made of reflective material and is installed on the bottom wall and located within the experimental space. An environmental conversion mechanism includes multiple drive units and multiple conversion columns. The drive units are mounted on the first body. A portion of the conversion columns are mounted on the top of the experimental space, and another portion of the conversion columns are mounted on the periphery of the experimental space. At least one conversion column is synchronously rotatably mounted on one drive unit. Each conversion column has a sound-absorbing part and a reflective part disposed on the back of the sound-absorbing part on its periphery. Each sound-absorbing part is made of sound-absorbing material, and each reflective part is made of sound-reflecting material. When the multiple drive units drive the multiple conversion columns to rotate by a predetermined angle, such that at least one sound-absorbing part disposed on the top of the first body faces the top wall, and at least one sound-absorbing part disposed on the periphery of the first body faces the side wall, a reverberation chamber sound field environment is formed inside the first body; and when the multiple drive units drive the multiple conversion columns to rotate by a predetermined angle, such that at least one reflective part disposed on the top of the first body faces the top wall, and at least one reflective part disposed on the periphery of the first body faces the side wall, a semi-anechoic chamber sound field environment is formed inside the first body.

2. The variable reverberation acoustic laboratory structure according to claim 1, characterized in that, Each of the drive units includes a drive member and a transmission member, wherein one of the transmission members is drivably mounted on one of the drive members, and one of the transmission members drives at least one of the conversion columns to rotate by being driven by one of the drive members, so that the interior of the first body switches from a reverberation chamber sound field environment to a semi-anechoic chamber sound field environment, or from a semi-anechoic chamber sound field environment to a reverberation chamber sound field environment.

3. The variable reverberation acoustic laboratory structure according to claim 2, characterized in that, A portion of the plurality of driving members are mounted on the top wall of the first body to drive at least one of the conversion columns disposed on the periphery of the first body to rotate, and another portion of the plurality of driving members are mounted on the side wall of the first body to drive at least one of the conversion columns disposed on the top of the first body to rotate.

4. The variable reverberation acoustic laboratory structure according to claim 3, characterized in that, Each of the conversion columns forms an interior cavity, and each of the conversion columns also has a plurality of support portions evenly and at intervals in its respective cavity, and the plurality of support portions are all made of rigid material. Each of the conversion columns also has a filling portion in its respective cavity, and the filling portion of each of the conversion columns is made of sound-absorbing material, and the filling portion fills the cavity and is held between the sound-absorbing portion and the reflective portion.

5. The variable reverberation acoustic laboratory structure according to claim 4, characterized in that, Each of the conversion columns has a reflective portion comprising an inner layer and an outer layer, wherein the inner layer is simultaneously fixedly connected to at least one of the support portions and forms at least a portion of the inner wall of the cavity, and the inner layer is made of a sound-insulating material, and the outer layer is made of a sound-reflecting material, and the outer layer is connected to the inner layer and remains at the outermost edge of the conversion column.

6. The variable reverberation acoustic laboratory structure according to claim 5, characterized in that, The laboratory body also includes a second body, which is disposed outside the first body in an enclosing manner, and a cavity is formed between the outer wall of the first body and the inner wall of the second body by a predetermined distance for sound insulation.

7. The variable reverberation acoustic laboratory structure according to claim 6, characterized in that, The second body further includes an upper part and a lower part, wherein the upper part is connected above the lower part to form an accommodating space communicating with the cavity inside the second body, the first body is housed in the accommodating space, the lower part is disposed below the bottom wall of the first body, the upper part of the second body is configured to be composed of bricks and mortar, and the lower part of the second body is configured to be composed of concrete material.

8. The variable reverberation acoustic laboratory structure according to claim 7, characterized in that, The lower segment of the second body further forms a groove communicating with the receiving space, and the laboratory body further includes a vibration damping body, which includes a vibration damping block and a rigid plate. The vibration damping block is made of rubber material and is installed in the groove of the lower segment. The vibration damping block also forms a receiving groove communicating with the receiving space. The rigid plate is made of rigid material and is installed in the receiving groove of the vibration damping block. The rigid plate is configured to abut against the bottom wall of the first body.

9. The variable reverberation acoustic laboratory structure according to claim 8, characterized in that, The vibration damping body also includes a waterproof block, which is made of waterproof material and is installed between the bottom wall of the first body and the rigid plate. The waterproof block is also connected to both the bottom wall and the rigid plate, and the rigid plate is configured to abut against the bottom wall of the first body via the waterproof block.

10. The variable reverberation acoustic laboratory structure according to claim 9, characterized in that, The first body forms a first inlet / outlet at the bottom of the side wall, and the first inlet / outlet is connected to the experimental space. The second body forms a second inlet / outlet at the bottom of the upper body, and the second inlet / outlet is aligned with the first inlet / outlet. The laboratory body also forms an access channel, and the access channel is formed between the first inlet / outlet and the second inlet / outlet. The two ports at both ends of the access channel are connected to the first inlet / outlet and the second inlet / outlet, respectively.

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