A sound insulation test system

Abstract

The sound insulation test system provided by the present invention is applied to the technical field of rail vehicles. The system comprises a sound insulation test room, a temperature control system, and a collection test system. The partition wall in the sound insulation test room divides the sound insulation test room into a sound-generating room and a receiving room, and the partition wall is preset with a test window for fixing a sample to be tested. When the sound insulation test system provided by the present invention is used to perform a sound insulation test, the sample to be tested is fixed to the test window, and the indoor temperature of the sound-generating room and the receiving room is adjusted by the temperature control system to simulate the running condition of a rail train in a cold zone. The collection test system generates a test sound source that meets the preset test requirements in the sound-generating room, and collects preset sound parameters in the receiving room at the same time, thereby completing the sound insulation effect test of the vehicle body structure in the cold zone, and effectively meeting the actual test needs.

Description

Technical Field

[0001] The present invention belongs to the technical field of rail vehicles, and particularly relates to a sound insulation test system. Background Art

[0002] With the continuous increase in the running speed of rail trains, the noise generated during the train operation is getting louder. Therefore, how to improve the sound insulation performance of the car body structure, reduce the noise in the carriage as much as possible, and provide a more comfortable riding environment for passengers has always been the goal pursued in the design of rail trains. In practical applications, in order to fully understand and verify the acoustic design of the rail train car body structure and determine the sound insulation effect of the car body structure, a sound insulation test needs to be carried out on the car body structure.

[0003] However, the car body structures of existing rail trains are designed after sound insulation tests on the premise of normal temperature environment and zero temperature difference between inside and outside the car body. However, some rail trains operate in cold regions. For example, when the outdoor ambient temperature exceeds -50°C and the temperature inside the carriage is 23°C to 25°C, a large temperature difference between the inside and outside of the car body structure will further affect the sound insulation performance of the car body structure. However, there is currently a lack of a corresponding test system to test the sound insulation effect of the car body structure in the cold region situation. Therefore, how to provide a sound insulation test system to test the sound insulation effect of the car body structure under the operating conditions in cold regions has become one of the technical problems that need to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a sound insulation test system that can simulate the operating conditions of a rail train when running in a cold region, so as to effectively test the sound insulation effect of the car body structure in the cold region and meet the actual application requirements. The specific solutions are as follows:

[0005] The present invention provides a sound insulation test system, including: a sound insulation test chamber, a temperature control system, and a collection and test system. Among them,

[0006] A partition wall is arranged in the sound insulation test chamber;

[0007] The partition wall divides the sound insulation test chamber into a sound source chamber and a receiving chamber, and the partition wall is preset with a test window for fixing a sample to be tested;

[0008] The temperature control system is used to adjust the indoor temperatures of the sound source chamber and the receiving chamber respectively;

[0009] The collection and test system is used to generate a test sound source that meets the preset test requirements in the sound source chamber and collect the preset sound parameters in the receiving chamber.

[0010] Optionally, the sound insulation test system provided by the present invention further includes: a temperature collection system, where,

[0011] The temperature acquisition system is used to acquire the indoor temperatures of the sound - generating chamber and the receiving chamber, as well as the sample temperature at a preset position of the sample to be tested.

[0012] Optionally, the acquisition and test system includes: a control device, a loudspeaker, and a sound - pressure sensor, where,

[0013] The loudspeaker is arranged in the sound - generating chamber;

[0014] The sound - pressure sensor is arranged in the receiving chamber;

[0015] The loudspeaker and the sound - pressure sensor are respectively connected to the control device.

[0016] Optionally, the acquisition and test system further includes: a first microphone and a second microphone, where,

[0017] The first microphone is arranged in the sound - generating chamber;

[0018] The second microphone is arranged in the receiving chamber;

[0019] The first microphone and the second microphone are respectively connected to the control device.

[0020] Optionally, the first microphone is arranged in the central area of the sound - receiving surface of the sample to be tested in the sound - generating chamber.

[0021] Optionally, there are multiple second microphones, and the arrangement positions of the second microphones include:

[0022] A preset position at a first preset distance from the central area of the sound - transmitting surface of the sample to be tested in the receiving chamber;

[0023] A preset position at a second preset distance from the central area of the sound - transmitting surface of the sample to be tested in the receiving chamber.

[0024] Optionally, the arrangement positions of the second microphones further include:

[0025] The edge area of the sample to be tested in the receiving chamber close to the test window.

[0026] Optionally, the acquisition and test system further includes: a power amplifier, where,

[0027] The loudspeaker is connected to the control device through the power amplifier.

[0028] Optionally, the temperature acquisition system includes: a temperature recorder and multiple temperature sensors, where,

[0029] Each of the temperature sensors is respectively connected to the temperature recorder;

[0030] The arrangement positions of the temperature sensors include:

[0031] Preset positions on the inner surface and the outer surface of the sample to be measured;

[0032] Preset indoor positions in the sound chamber;

[0033] Preset indoor positions in the receiving chamber.

[0034] Optionally, a fixed fixture is provided on the test window, wherein,

[0035] The fixed fixture is in elastic contact with the sample to be measured.

[0036] Based on the above technical solutions, the sound insulation test system provided by the present invention includes a sound insulation test chamber, a temperature control system, and a data acquisition and test system. The partition wall in the sound insulation test chamber divides the sound insulation test chamber into a sound chamber and a receiving chamber, and the partition wall is preset with a test window for fixing the sample to be measured. When the sound insulation test system provided by the present invention is used for the sound insulation test, the sample to be measured is fixed to the test window, the indoor temperatures of the sound chamber and the receiving chamber are adjusted by the temperature control system to simulate the driving conditions of the rail train running in cold regions, and a test sound source meeting the preset test requirements is generated in the sound chamber by the data acquisition and test system, and at the same time, the preset sound parameters in the receiving chamber are collected, so as to complete the sound insulation effect test of the car body structure in cold regions, effectively meeting the actual test requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 is a structural block diagram of a sound insulation test system provided by an embodiment of the present invention;

[0039] Figure 2 is a structural block diagram of another sound insulation test system provided by an embodiment of the present invention;

[0040] Figure 3 is a structural block diagram of still another sound insulation test system provided by an embodiment of the present invention;

[0041] Figure 4 is a schematic diagram of the arrangement position of the second microphone provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] As described above, the body structures of existing rail trains are designed after sound insulation tests under the premise of normal temperature environment and zero temperature difference between the inside and outside of the car body. The temperature of the existing sound insulation test system cannot be reduced to the environmental temperature in cold regions through conventional means. For example, it cannot reach minus 50°C. Therefore, it is impossible to simulate the operating conditions of a rail train when it is running in a cold region. In particular, when the temperature inside the car body is between 23°C and 25°C, there is a relatively obvious temperature difference between the inside and outside of the car body, and none of the existing sound insulation test systems can simulate this actual operating scenario.

[0044] In view of the above situation, the embodiments of the present invention provide a sound insulation test system that can simulate the operating conditions of a rail train when it is running in a cold region, so as to effectively test the sound insulation effect of the car body structure in a cold region. Optionally, refer to Figure 1 , Figure 1 is a structural block diagram of a sound insulation test system provided by the embodiments of the present invention. The test system includes:

[0045] a sound insulation test chamber 10, a temperature control system 20, and a collection and test system 30. Among them,

[0046] A partition wall 101 is provided in the sound insulation test chamber 10. Through the partition wall 101, the sound insulation test chamber 10 can be further divided into a sound source chamber 102 and a receiving chamber 103. Insulation materials are provided in the partition wall 101 and all the walls constituting the sound insulation test chamber 10, so as to ensure that the low temperature inside the sound source chamber 102 is not directly transmitted to the normal temperature receiving chamber 103, which is conducive to meeting the expected test environment requirements. More importantly, the partition wall 101 is also preset with a test window (not shown in the figure) for fixing the sample 40 to be tested. The test window is provided with sealing and insulation materials to ensure the airtightness between the sound source chamber 102 and the receiving chamber 103. When conducting a sound insulation test on the sample 40 to be tested, the sample 40 to be tested can be directly fixed to the test window.

[0047] Optionally, to ensure that the test sample 40 to be installed is not damaged during the installation process, and at the same time ensure good sealing performance and reduce the transmission of test noise through the gap between the test sample 40 and the test window, which may affect the accuracy of the test structure, a fixed fixture (not shown in the figure) is provided on the test window, and the fixed fixture is in elastic contact with the test sample 40.

[0048] For example, an elastic sealing gasket is provided between the test sample 40 and the fixed fixture. At the same time, sealant is applied to the contact part. Similarly, the connection between the fixed fixture and the test window can also be made in the above-mentioned elastic contact manner.

[0049] Of course, other fixing methods that can achieve the elastic connection between the test sample 40 and the fixed fixture are also optional. Without exceeding the scope of the core idea of the present invention, they also belong to the scope of protection of the present invention.

[0050] Furthermore, in the sound generation chamber 102 and the receiving chamber 103 obtained by dividing the sound insulation test chamber 10, the sound generation chamber 102 is a reverberation chamber with adjustable indoor temperature, and the receiving chamber 103 is a semi-anechoic chamber with adjustable indoor temperature.

[0051] The temperature control system 20 is used to adjust the indoor temperatures of the sound generation chamber 102 and the receiving chamber 103 respectively. According to the foregoing content, when the rail vehicle runs in cold regions, the temperature outside the vehicle body can be as low as below -50°C, while the temperature inside the vehicle body needs to be maintained between 23°C and 25°C to ensure a good riding experience for passengers. Based on this actual operating condition, when conducting the sound insulation test through this test system, it is required that the temperature control system 20 can reduce the indoor temperature of the sound generation chamber 102 to below -50°C, and at the same time, maintain the indoor temperature of the receiving chamber 103 between 23°C and 25°C, so as to fully simulate the actual use scenario of the rail train.

[0052] Optionally, during the actual construction of the temperature control system 20, its temperature adjustment method can adopt the BTHC (Balanced Temperature and Humidity Control) control system. Of course, other control systems that can meet the above requirements can also be used. The present invention does not limit the specific selection of the temperature control system 20.

[0053] Furthermore, the acquisition and test system 30 includes a control device (not shown in the figure), a sound pressure sensor 301, and a speaker 302. The functions of the acquisition and test system 30 provided by the embodiments of the present invention mainly include two aspects. One is to generate a test sound source that meets the preset test requirements in the sound generation chamber 102, and the other is to collect the preset sound parameters in the receiving chamber 103.

[0054] Specifically, the loudspeaker 302 in the acquisition and test system 30 is arranged in the sound generation chamber 102. The control device is connected to the loudspeaker 302 and generates a test sound source that meets the preset test requirements in the sound generation chamber 102 through the loudspeaker 302. According to the test requirements under the existing standards, the frequency response range of the loudspeaker 302 meets the test measurement requirements within the 1 / 3 octave with a center frequency of 100 - 5000 Hz.

[0055] In practical applications, since the loudspeaker 302 is installed in the sound generation chamber 102 with a relatively low temperature, it is necessary to adapt to the sound field distribution requirements in the low-temperature environment and at the same time meet the requirements as a noise sound source. Therefore, the loudspeaker 302 is preferably a high-intensity loudspeaker resistant to low temperatures, such as the piezoelectric loudspeaker KP6015.

[0056] The sound pressure sensor 301 is arranged in the receiving chamber 103. The control device is connected to the signal output end of the sound pressure sensor 301 and receives the sound pressure data measured by the sound pressure sensor 301. Since the sound pressure sensor 301 is arranged in the receiving chamber 103 which is basically at room temperature, there are no special requirements for the selection of the sound pressure sensor 301.

[0057] It should be noted that for the process of the acquisition and test system 30 controlling the loudspeaker 302 to generate a test sound source that meets the preset test requirements, and the acquisition and test system 30 collecting and receiving the test data fed back by the sound pressure sensor 301, both can be realized through the existing technology, and the present invention does not limit the specific implementation process of the above control process.

[0058] In summary, the sound insulation test system provided by the present invention includes a sound insulation test chamber, a temperature control system, and an acquisition and test system. The partition wall in the sound insulation test chamber divides the sound insulation test chamber into a sound generation chamber and a receiving chamber, and the partition wall is preset with a test window for fixing the sample to be tested. When applying the sound insulation test system provided by the present invention to conduct a sound insulation test, the sample to be tested is fixed to the test window, the indoor temperatures of the sound generation chamber and the receiving chamber are adjusted through the temperature control system to simulate the running conditions of the rail train in cold regions, and the acquisition and test system generates a test sound source that meets the preset test requirements in the sound generation chamber, and at the same time collects the preset sound parameters in the receiving chamber, thereby completing the sound insulation effect test of the car body structure in cold regions and effectively meeting the actual test requirements.

[0059] As described above, when simulating the application scenario of the rail train running in cold regions, it is necessary to control the indoor temperatures of the sound generation chamber and the receiving chamber respectively. In order to more accurately control the indoor temperatures of the sound generation chamber and the receiving chamber to obtain more accurate test results, on the basis of the Figure 1 shown embodiment, the present invention provides another sound insulation test system.

[0060] Optionally, refer to Figure 2 ,Figure 2 is a structural block diagram of another sound insulation test system provided by an embodiment of the present invention. Based on the embodiment shown in Figure 1 , the embodiment of the present invention provides a sound insulation test system, further including: a temperature acquisition system, which is used to acquire the indoor temperatures of the sound generation chamber and the receiving chamber, as well as the sample temperature at a preset position of the sample to be tested.

[0061] Specifically, in combination with Figure 2 , the temperature acquisition system provided by the embodiment of the present invention includes: a temperature recorder 501 and a plurality of temperature sensors 502, where

[0062] each temperature sensor 502 is respectively connected to the temperature recorder 501. In practical applications, the temperature sensor 502 can be implemented by using a K-type thermocouple. Of course, other temperature sensors in the prior art that can measure the temperature at a specified position are also optional. The specific selection of the temperature sensor for the sound insulation test system provided by the present invention is not limited.

[0063] Based on the above content, the temperature acquisition system needs to acquire the indoor temperatures of the sound generation chamber 102, the receiving chamber 103, and the sample temperature at a preset position of the sample to be tested 40. Therefore, multiple temperature sensors need to be set and respectively set at different positions to realize the temperature acquisition at different positions.

[0064] Optionally, the layout positions of each temperature sensor can include:

[0065] the preset positions on the inner surface and the outer surface of the sample to be tested 40; the preset indoor positions of the sound generation chamber 102 (the layout position of the temperature sensor in the sound generation chamber 102 is not shown in the figure), and the preset indoor positions of the receiving chamber 103 (the layout position of the temperature sensor in the receiving chamber 103 is not shown in the figure).

[0066] Optionally, the temperature recorder 501 can further include a temperature display screen. Through the temperature display screen, the test personnel can very intuitively see the real-time temperature at a specified position, ensuring that the test personnel can effectively control the test progress.

[0067] In summary, on the basis of the embodiment shown in Figure 1 , the embodiment of the present invention adds a temperature acquisition system. Through the temperature acquisition system, the indoor temperature of the sound generation chamber, the indoor temperature of the receiving chamber, and the temperature at the preset position of the sample to be tested can be obtained more accurately. In particular, the temperature difference between the inner and outer surfaces of the sample to be tested can be accurately known. The accurate acquisition of the test temperature can ensure that the test environment simulated by the sound insulation test system is not only closer to the real operating environment, but also significantly improves the control accuracy of the test process, which helps to improve the accuracy of the test results.

[0068] Furthermore, when the rail train is running at high speed, especially at an ultra-high speed of 400 km / h, the noise outside the car body is very loud. To accurately simulate the operating environment of the rail train, based on the above embodiments, the sound insulation test system should also be able to provide a sufficiently large noise source intensity. For example, the noise source intensity needs to reach 130 - 140 dB, and it is difficult for the loudspeakers in the prior art to meet this test requirement.

[0069] To solve this problem, an embodiment of the present invention provides another sound insulation test system. Optionally, referring to Figure 3 , Figure 3 is a structural block diagram of another sound insulation test system provided by an embodiment of the present invention. Based on Figure 2 (of course, it can also be based on the embodiment shown in Figure 1 ), the sound insulation test system provided by the embodiment of the present invention further includes:

[0070] A power amplifier 60. Specifically, the signal output end of the acquisition and test system for outputting the noise signal is connected to the input end of the power amplifier 60, and the output end of the power amplifier 60 is connected to the input end of the loudspeaker 302.

[0071] In this embodiment, the power amplifier 60 is used to increase the noise source intensity output by the loudspeaker 302, thereby meeting the actual test requirements.

[0072] Optionally, for the sound insulation performance test of the sample to be tested, as much test data representing different parameters as possible should be obtained, so as to more comprehensively and accurately know the sound insulation effect of the sample to be tested. To achieve this goal, based on any of the above embodiments, the acquisition and test system of the sound insulation test system provided by the present invention further includes a first microphone and a second microphone.

[0073] Specifically, the first microphone is arranged in the sound generation chamber, and the second microphone is arranged in the receiving chamber. The first microphone and the second microphone are respectively connected to the control device in the acquisition and test system, and the control device can collect the sound pressure data in the sound generation chamber and the receiving chamber through the first microphone and the second microphone.

[0074] Specifically, the first microphone is arranged in the central area of the sound receiving surface of the sample to be tested in the sound generation chamber. It can be imagined that the sound receiving surface of the sample to be tested mentioned in the embodiment of the present invention specifically refers to the surface facing the loudspeaker and located in the sound generation chamber.

[0075] When conducting sound insulation tests in cold regions, the temperature in the sound source chamber is relatively low. Therefore, in practical applications, the first microphone is preferably an aviation-type planar microphone that can withstand ultra-low temperature application environments, such as the B&K 4948 microphone. Correspondingly, the temperature in the receiving chamber is generally normal temperature. The operating environment of the second microphone installed in the receiving chamber is better. Therefore, the hardware requirements for the second microphone are relatively low, and there is no need to select a more expensive low-temperature-resistant microphone. A microphone that can operate normally under normal temperature conditions, such as the INV9206 type, can be selected.

[0076] Optionally, in order to obtain more comprehensive sound insulation data of the sample to be tested, multiple second microphones can be arranged in the receiving chamber, and according to the test requirements, each second microphone can be arranged at different positions in the receiving chamber.

[0077] Specifically, the installation positions of the second microphone can include:

[0078] A preset position at a first preset distance from the central area of the sound transmission surface of the sample to be tested in the receiving chamber, and a preset position at a second preset distance from the central area of the sound transmission surface of the sample to be tested in the receiving chamber. For example, one second microphone can be arranged at each position along the center line of the sound transmission surface of the sample to be tested, 100 mm and 200 mm away from the sound transmission surface in the receiving chamber.

[0079] Furthermore, the installation positions of the second microphone also include: the edge area of the sample to be tested in the receiving chamber close to the test window. Optionally, referring to Figure 4 , Figure 4 is a schematic diagram of the installation position of the second microphone provided by an embodiment of the present invention. Installing the second microphone at the position shown in Figure 4 to collect the noise source intensity at the edge of the sample to be tested can effectively verify the sealing effect of the test window and help improve the accuracy of the test results.

[0080] It can be imagined that the sound insulation test system provided by each of the above embodiments can adjust the indoor temperatures of the receiving chamber and the sound source chamber through the temperature control system, and can not only achieve sound insulation tests under operating conditions in cold regions, but also the sound insulation test system provided by the present invention can complete sound insulation tests under normal temperature environments and high temperature environments, and has good versatility.

[0081] Moreover, the test environments provided by each embodiment of the present invention are closer to the actual environment, and their test results are closer to the results under extreme environments. Therefore, the test accuracy is high, and it is easier to achieve the sound insulation amount and noise reduction effect of the designed structure;

[0082] Since temperature sensors and microphones of multiple types and at multiple positions are used to record sound insulation data, the basic temperature and sound pressure data of each layer of material of the sample to be tested can be obtained, which is conducive to establishing the corresponding relationship between structural parameters and sound insulation data and finding out the weak links of the designed structure. Therefore, it has high reliability.

[0083] The system uses a high-intensity loudspeaker, which can conveniently simulate the noise source intensity and directivity of actual transportation vehicles such as high-speed trains, and can directly obtain the sound pressure level inside the high-speed train under extreme on-site environments. Therefore, it has good scalability.

[0084] Based on the sound insulation test system provided in any of the above embodiments, the process of performing a sound insulation test using the sound insulation test system provided in the embodiments of the present invention will be introduced below.

[0085] After fixing the sample to be tested on the test window of the partition wall, a pre-test needs to be carried out first.

[0086] Specifically, without changing the indoor temperatures of the sound source room and the receiving room of the sound insulation test chamber, turn on the acquisition and test system, and input the acoustic parameters of electrical devices such as each microphone, pressure sensor, and loudspeaker into the acquisition and test system.

[0087] Adjust the power amplifier to ensure that the sound pressure level at a preset position in the receiving room is at least 20 dB greater than the sound pressure level of the background noise to ensure the accuracy of the obtained test data.

[0088] After the adjustment is completed, control the loudspeaker by the acquisition and test system to output the noise source intensity. At the same time, the acquisition and test system records the sound insulation data during the pre-test and checks whether the results are normal.

[0089] After the pre-test is completed, the formal test can be carried out.

[0090] Control the temperature control system to set the temperature of the receiving room to a constant 25 °C, and gradually adjust the temperature of the sound source room from 40 °C to -50 °C with a temperature adjustment step of 10 °C. Each group of tests starts after the temperature sensor reading has been stable for 20 min, and the temperature change of the structural member is ensured to be within ±0.5 °C during the whole test process.

[0091] The acquisition and test system creates a folder corresponding to the temperature gradient and points the test data recording path to this folder. The acquisition and test system operates in the order of creation, refresh, sound generation, and recording. Three groups of each set of data are recorded, with each group being 10 s. After the test is completed, confirm that the data recording is correct.

[0092] Furthermore, based on the temperature measured by the temperature sensor in the sound chamber, conduct a test every time the temperature drops by 10 °C. Each time, wait for the temperature indication of the temperature sensor to stabilize for more than 20 minutes before conducting the test, and record the test data. Continue the test until the test at the final temperature of -50 °C is completed.

[0093] After completion, save the obtained test data, check whether the test data is completely recorded, and organize and back up the data.

[0094] Finally, it is also necessary to process and analyze the obtained test data to obtain the 1 / 3 octave band sound insulation curve and data, the average sound insulation Rave, and the weighted sound insulation Rw.

[0095] It should be noted that for the above test process, especially the specific working process and control process of the acquisition and test system and the temperature system, they can all be implemented with reference to the prior art, and the present invention does not make specific limitations thereto.

[0096] Those skilled in the art can further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0097] The steps of the method or algorithm described in combination with the embodiments disclosed herein can be directly implemented by hardware, a software module executed by a processor, or a combination of the two. The software module can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the technical field.

[0098] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the core idea or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sound insulation test system, characterized in that: include: Sound insulation test room, temperature control system, acquisition test system and temperature acquisition system, among which, A partition wall is arranged in the sound insulation test room; The partition wall divides the sound insulation test room into a sound emitting room and a receiving room, and the partition wall is preset with a test window for fixing the sample to be tested; The test window is provided with a fixing fixture; the fixing fixture is in elastic contact with the sample to be tested; The temperature control system is used to adjust the indoor temperature of the sound-generating room and the receiving room respectively; The temperature acquisition system is used to collect the indoor temperature of the sound emission room and the receiving room, and the sample temperature at the preset position of the sample to be tested; The temperature acquisition system includes: a temperature recorder and a plurality of temperature sensors, wherein: Each of the temperature sensors is connected to the temperature recorder respectively; The layout positions of the temperature sensors include: Preset positions of the inner surface and outer surface of the sample to be tested; The preset indoor position of the sound room; The preset indoor position of the receiving room; The acquisition test system is used to generate a test sound source that meets the preset test requirements in the sound generation room, and to collect preset sound parameters in the receiving room; The acquisition test system includes: a control device, a speaker, and a sound pressure sensor, wherein: The loudspeaker is arranged in the sound-generating chamber; The sound pressure sensor is arranged in the receiving chamber; The speaker and the sound pressure sensor are respectively connected to the control device; The acquisition test system further includes: a first microphone and a second microphone, wherein: The first microphone is arranged in the sound generating chamber; The second microphone is arranged in the receiving room; The first microphone and the second microphone are respectively connected to the control device; The first microphone is arranged in the central area of ​​the sound receiving surface of the sample to be tested in the sound emission chamber; The second microphone includes a plurality of microphones, and the layout positions of the second microphones include: A preset position at a first preset distance from a central area of ​​a sound transmission surface of the sample to be tested in the receiving chamber; A preset position at a second preset distance from a central area of ​​a sound transmission surface of the sample to be tested in the receiving chamber; The sample to be tested in the receiving chamber is located in an edge area close to the test window.

2. The sound insulation test system according to claim 1, characterized in that: The acquisition test system also includes: a power amplifier, wherein: The loudspeaker is connected to the control device via the power amplifier.

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