Sound insulation performance test device and test method of vehicle sound insulation material, electronic equipment
A technology for testing devices and sound insulation materials, which is used in measurement devices, material analysis using sonic/ultrasonic/infrasonic waves, and material analysis, etc., can solve problems such as low accuracy, and achieve high accuracy and prevent interference.
Active Publication Date: 2021-02-19
EVERGRANDE NEW ENERGY AUTOMOTIVE INVESTMENT HLDG GRP CO LTD
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[0005] The invention discloses a sound insulation performance testing device of vehicle sound insulation materials, a sound insulation performance testing method, electronic equipment and a storage medium, in order to solve the problem of low accuracy existing in the current sound insulation performance testing scheme
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[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] The technical solutions disclosed by various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0034] Such as figure 1 As shown, the embodiment of the present invention discloses a sound insulation performance test device for vehicle sound insulation materials. The sound insulation perfo...
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The invention discloses a sound insulation performance testing device of a vehicle sound insulation material, a sound insulation performance testing method, electronic equipment and a storage medium. The sound insulation performance testing device includes: a reverberation chamber (100), which is provided with a connected reverberation chamber ( 100) and installation holes in the external space outside the reverberation chamber (100); the excitation air source (200) is arranged in the external space, and the excitation air source (200) has an air outlet (210); the sound collection part (300 ), set in the inner space; wherein, the excitation gas source (200) is used to generate the airflow flowing out from the air outlet (210) and acting on the object under test when the object under test (600) is installed in the installation hole, The object to be measured is vibrated to radiate noise; the sound collecting part (300) is used for collecting sound signals in the reverberation chamber (100) when the air flow acts on the object to be measured. This scheme can solve the problem of low accuracy existing in the current sound insulation performance testing scheme.
Description
technical field [0001] The invention relates to the technical field of testing, in particular to a sound insulation performance testing device of a vehicle sound insulation material, a sound insulation performance testing method, electronic equipment and a storage medium. Background technique [0002] As people's requirements for the NVH performance of automobiles gradually increase, various manufacturers control the noise more and more strictly during the development process. The sound insulation performance test of materials becomes particularly important. [0003] Usually, the noise in the car includes structural sound and air sound. At present, the sound insulation performance test methods for air sound are very mature, but there are few sound insulation performance test methods for structural sound. At present, the commonly used sound insulation performance test method for structural sound is: use a motor to emit steel balls, hit the test sample to make it vibrate, and...
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IPC IPC(8): G01N29/04G01N29/22
CPCG01N29/045G01N29/223G01N2291/023
Inventor 王丁蔺磊倪震徐杰方玉茹邱乐
Owner EVERGRANDE NEW ENERGY AUTOMOTIVE INVESTMENT HLDG GRP CO LTD