A sealed tank using noise to measure vibration

Abstract

The invention relates to a detection device, in particular to a seal pot using noise for testing vibration. The seal pot comprises a pot body, microphones, an installing platform, a shock insulation base and a driving device, wherein the driving device is installed outside the pot body, the installing platform is located in the pot body, the microphones are installed in the pot body and located on the periphery of the installing platform, the installing platform penetrates through the pot body and is fixedly installed on the shock insulation base outside the pot body, the inner wall of the pot body is coated with an acoustical material, the pot body is filled with high-pressure and high-density gas, a part to be tested is installed on the installing platform, an output shaft of the driving device penetrates through the pot body and is connected with the part to be tested, the positions of the microphones are adjusted to be over against the part to be tested, the voice frequency information, at any positions, of the part to be tested can be measured, the vibration conditions of the part to be tested are analyzed, outside interference factors are not introduced into the whole test process, the testing effects are good, and accuracy is high.

Description

technical field [0001] The invention relates to a detection device, in particular to a sealed tank which uses noise to measure vibration. Background technique [0002] Noise is a kind of pollution in most cases, but at the same time, through noise measurement, the internal operation of the DUT can be analyzed, so noise measurement has become more and more important. For example, the approach sound holography technology measures the complex sound pressure of the space sound field and uses acoustic inverse operations to express the three-dimensional space of the noise source through holography, which can realize the location of the noise source. Combined with the analysis of the noise spectrum, it can quickly analyze the noise at each characteristic frequency Corresponding link between component and mechanism noise. [0003] Noise measurement has extremely high requirements on the environment and measurement equipment. Ordinary sound measurement needs to use filtering and oth...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the existing noise detection, the present invention provides a sealed tank that does not introduce external interference factors in the test process, has good test effect and high precision.

Images