Test method and test system for sound insulation performance of whole vehicle

Abstract

The invention relates to a test method and test system for sound insulation performance of a whole vehicle, and the method comprises the following steps: adjusting a sound source of a reverberation chamber to form a reverberation environment until the sound pressures of all parts of the outer surface of a test sample vehicle are basically equal; in-vehicle sound signals in multiple directions in the test sample vehicle are measured by using a spherical sound array, wherein the spherical sound array is arranged in the test sample vehicle; analyzing according to the in-vehicle sound signal to obtain sound pressure distribution data of the inner surface of the test sample vehicle; and analyzing according to the sound pressure distribution data to obtain weak parts of the sound insulation performance of the whole vehicle. Compared with a traditional test method, the method is simpler and higher in efficiency, the area with the weak sound insulation performance of the vehicle can be pointed out through one-time measurement, the arrangement difficulty is greatly reduced, limitation of the position of the measurement area can be avoided, sound pressure distribution of the inner surface of the whole vehicle is analyzed, and the weak area obtained through final measurement is more accurate; and the weak sound insulation performance area of the whole vehicle can be rapidly measured.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a test method and a test system for the sound insulation performance of a complete vehicle. Background technique [0002] At present, in order to improve the ride comfort of vehicles, the requirements for the sound insulation performance of automobiles are getting higher and higher. In order to improve the sound insulation performance of the car, the structure will be optimized for the sound leakage and sound transmission position of the car to improve the sound insulation performance of the car. In order to detect the sound insulation performance of the vehicle, the sound pressure difference inside and outside the vehicle is often collected separately to judge the sound insulation performance of each area. [0003] In the related art, in order to obtain the weak areas of vehicle sound insulation performance, the sound insulation performance of different areas will be measured respect...

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Problems solved by technology

[0005] The embodiment of the present invention provides a test method and test system for the sound insulation performance of the whole vehicle, so as to solve the problem that in the related art, the sound insulation performance test needs to be tested in different areas, and the microphone arrangement in some areas is difficult, so it is impossible to quickly measure the sound insulation performance of the whole vehicle weak area problem

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