Intelligent material sound insulation index testing device and method

Through the cooperation of the sound intensity probe and camera of the intelligent testing device, high-precision automatic detection of the sound insulation of acoustic materials is achieved, which solves the problem of inaccurate testing in existing technologies and improves detection efficiency and result accuracy.

CN120629362AActive Publication Date: 2025-09-12CHINA AUTOMOTIVE ENGINEERING RESEARCH INSTITUTE (TIANJIN) CO LTD +2
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Patent Information

Application Number
CN202511141009.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-15
Publication Date
2025-09-12
Estimated Expiration
2045-08-15

AI Technical Summary

Technical Problem

In the existing technology, the sound insulation test of acoustic materials has the problem of inaccurate test distance and moving speed, which makes it impossible to effectively detect the verticality and sealing of the sample, resulting in inaccurate test results and inability to effectively detect whether the sample has defects.

Method used

By adopting intelligent testing equipment and taking advantage of the coordinated measurement of reverberation chamber and anechoic chamber, and through the cooperation of sound intensity probe and camera, automatic detection and testing are realized. Combined with the sound leakage cloud map and the precise positioning of the robotic arm, the scanning path is dynamically adjusted to perform high-precision sound insulation calculation.

Benefits of technology

High precision and high efficiency of sound insulation testing have been achieved, the leakage point positioning accuracy has been improved to the centimeter level, the sealing repair efficiency has been improved, the detection speed has reached 0.2m/s, the repeatability error of the test results is less than 0.2dB, and the coverage blind area has been reduced by 90%.

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Abstract

The invention discloses an intelligent material sound reduction index testing device and method.The intelligent material sound reduction index testing method comprises the steps that a sound source in a reverberation chamber is used for generating a sound source to a sound intensity probe arranged in an anechoic chamber, and a diffusion field which is uniform in energy density and randomly distributed in all propagation directions is formed in the reverberation chamber; receiving the sound of the sound source passing through the to-be-tested acoustic material sample piece by using a sound intensity probe; and according to the sound pressure level of the reverberation chamber and the sound pressure level received by the sound intensity probe, calculating the sound insulation amount of the to-be-tested acoustic material sample. According to the intelligent material sound insulation index testing device and method provided by the invention, the intelligent testing device is used for automatic testing, and test detection and testing can be efficiently carried out according to requirements.
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