A vibration damping pad noise test system

Abstract

The invention discloses a vibration-damping pad noise testing system, which relates to the field of vibration-damping material testing. It includes a frame placed in a semi-anechoic chamber, an air conditioner external unit is placed on the frame, and microphones are arranged around the air conditioner external unit. The lower ends of the feet of the air conditioner external unit are bolted to the vibration damping pad, and the microphone is electrically connected to the noise and vibration test and analysis system and provides the system with collected noise sources. The noise and vibration test and analysis system is used for comparative analysis of the air conditioner outdoor unit In different environmental operation modes and the data difference of the noise source before and after using the vibration damping pad, the present invention collects the position and decibel of the sound source by setting microphones around the air conditioner outdoor unit, and compares and analyzes the air conditioner outdoor unit in different uses through the noise vibration test and analysis system. The data difference of the noise source before and after using the vibration damping pad in the environmental operation mode provides more data for the performance research of the vibration damping pad.

Description

technical field [0001] The invention relates to the field of vibration-damping material testing, in particular to a vibration-damping pad noise testing system. Background technique [0002] What is the effect of the existing vibration damping pads for external air conditioners? Some companies have conducted market research and user feedback, but the reliability of the data obtained is not high and the feedback cycle is long, which is not conducive to the development of vibration damping pads with good performance. Some companies will During the research and development stage, the noise test of the vibration damping pad was carried out, but the air conditioner external unit was only placed in a semi-anechoic room, and the source position and decibels of the air conditioner external unit were collected through the microphone, and then connected to the noise and vibration test and analysis system for analysis and comparison. Part of the experimental data can be obtained to a ce...

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Problems solved by technology

[0002] What is the effect of the existing vibration damping pads for external air conditioners? Some companies have conducted market research and user feedback, but the reliability of the data obtained is not high and the feedback cycle is long, which is not conducive to the development of vibration damping pads with good performance. Some companies will During the research and development stage, the noise test of the vibration damping pad was carried out, but the air conditioner external unit was only placed in a semi-anechoic room, and the source position and decibels of the air conditioner external unit were collected through the microphone, and then connected to the noise and vibration test and analysis system for analysis and comparison. Part of the experimental data can be obtained to a certain extent, which is conducive to the research and development of optimizing the performance of the vibration damping pad. However, due to the single use environment of the air conditioner external unit, the lack of a large amount of data on the collected sound source data, and the location, the experimental data type is single and cannot meet the requirements. Further research and development of vibration damping pad performance improvement needs, at the same time, if you want to manually change the environment of the air conditioner external unit and the position of the microphone, it is impossible to ensure that the adjustment position is the same every time, so the reliability of the test data is low. Therefore, it is necessary to provide a vibration damping pad Pad noise test system solves the above problems

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