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Method and device for measuring normalized noise exposure level

A measurement method and normalization technology, applied in the direction of measuring devices, measuring electrical variables, measuring current/voltage, etc., can solve problems such as low accuracy and deviation of measurement results, and achieve the effect of improving prediction accuracy

Pending Publication Date: 2022-03-22
中国疾病预防控制中心职业卫生与中毒控制所 +1
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Problems solved by technology

[0004] Based on this, it is necessary to solve the problem that the traditional noise exposure level measurement method ignores the hearing damage factors of non-Gaussian complex noise, which leads to the low accuracy of the noise exposure level measurement results and the deviation from the actual situation, and provides a normalized noise Method and device for measuring exposure level

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  • Method and device for measuring normalized noise exposure level
  • Method and device for measuring normalized noise exposure level
  • Method and device for measuring normalized noise exposure level

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Embodiment Construction

[0032] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0033] This application provides a method for determining the normalized noise exposure level.

[0034] The method for determining the normalized noise exposure level provided in this application does not limit its executive body. Optionally, the executor of the method for measuring the normalized noise exposure level provided in this application may be a device for measuring the normalized noise exposure level.

[0035] Specifically, the executor may be a single-chip microcomputer in the device for measuring the normalized noise exposure level.

[0036] Such as figure ...

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Abstract

The invention relates to a normalized noise exposure level determination method and device, and the method comprises the steps: carrying out the correction of a noise exposure amount through analyzing the statistical characteristics of a noise signal, thereby obtaining a corrected noise exposure level, and carrying out the measurement of the normalized noise exposure level. The corrected noise exposure level is used as the normalized noise exposure level to predict the hearing loss, so that the prediction accuracy of the hearing loss caused by complex noise can be effectively improved. According to the method, the waveform fluctuation index is specifically adopted to distinguish the noise with the pulse component and the steady-state noise, on one hand, under the same noise exposure level, the waveform fluctuation index can distinguish the hearing impairment degree caused by the noise of different time domain structures; on the other hand, the NIHL (Noise Hearing Loss) can be accurately evaluated by using waveform fluctuation index adjustment to correct the noise level.

Description

technical field [0001] The present application relates to the technical field of noise index measurement, in particular to a method and device for measuring normalized noise exposure levels. Background technique [0002] Noise-induced hearing loss is not only caused by crowd occupational noise, but also the result of total noise exposure. The risk of persistent hearing loss from regular population-based occupational noise exposure or daily repetitive noise exposure is related to the level and duration of noise exposure. The traditional measurement method of noise exposure level generally follows the GB / T-14366 noise standard, and the measurement of the noise exposure level adopted generally uses the normalized exposure level of the rated 8h working day within the exposure period, using L ex，8h To represent. [0003] However, researchers have long found that impulsive noise, or complex noise with an impulsive / impact component, is more detrimental to hearing than continuous ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G01R19/25
CPCG01H17/00G01R19/2503
Inventor 张美辨熊鑫章邱伟
Owner 中国疾病预防控制中心职业卫生与中毒控制所
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