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Noise detection system and noise detection method

A detection method and detection system technology, which can be used in measurement devices, vibration measurement, vibration measurement in fluids, etc., can solve the problems of high noise cost and high cost of anechoic chambers.

Pending Publication Date: 2022-05-20
BENQ INTELLIGENT TECH SHANGHAICO LTD +1
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Problems solved by technology

However, anechoic chambers are expensive, and the cost of using an anechoic chamber to test product noise is also high

Method used

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  • Noise detection system and noise detection method
  • Noise detection system and noise detection method
  • Noise detection system and noise detection method

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Embodiment Construction

[0035] To further understand the object, configuration, features and functions of the present invention, in conjunction with the embodiments described in detail below.

[0036] Figure 1 Schematic diagram of a noise detection system 100 for embodiments of the present invention. Noise detection system 100 comprises a vibration sensor 110 and a processor 120. Object 130 may generate noise due to vibration. Vibration sensor 110 for sensing the noise generated by the object 130 to generate a noise signal. The processor 120 couples the vibration sensor 110 and processes the noise signal. Processor 120 by the noise signal to obtain the structure vibration bit quasi-spectrum (Structure Vibration Level), using a set of equalization parameters and a set of A-weighted parameters (A-Weighting) to adjust the structure vibration spectrum to produce sound pressure quasi-spectrum SPL (SoundPressure Level), and the use of sound pressure quasi-spectrum to calculate the noise value generated by the...

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Abstract

The invention provides a noise detection method and a noise detection system, and the method comprises the steps: sensing the noise generated by an object through a vibration sensor, so as to generate a noise signal, and obtaining a structure vibration level frequency spectrum through the noise signal; the structure vibration spectrum is adjusted using a set of equalization parameters and a set of A weighting parameters to generate a sound pressure level spectrum, and the sound pressure level spectrum is used to calculate a noise value generated by the object.

Description

Technical field [0001] The present invention concerns a system and method of noise detection, particularly refers to a system and method of noise detection that is convenient to use. Background [0002] With the rapid development of the technology industry, the information industry has higher and higher requirements for the quality of product sound, and for users, the noise perception has also begun to be valued. For general household 3C products, such as notebook computers, projectors, multi-function transaction machines, etc., noise may also be generated, making users feel unpleasant, so noise measurement has also become one of the important indicators of quality verification. At present, information products are generally required to be tested on measurement specifications such as ISO7779, ISO3744 or ISO3745. [0003] When measuring sound pressure or frequency analysis, the product does not want the measured value to be affected by the reflection of the climate, ground or othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00G01H1/04G01H3/08
Inventor 陈世宾简文伦江进富李长升
Owner BENQ INTELLIGENT TECH SHANGHAICO LTD
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