Calculation method and system for auditory threshold transfer after acoustic weapon strikes

A technology of sonic weapons and calculation methods, applied in the directions of calculation, weapon types, instruments, etc., can solve problems such as the inability to accurately evaluate the effect of sonic weapons, and achieve the effect of automatic calculation

Active Publication Date: 2020-12-29
NANJING UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

However, there is still no complete calculation process to calculate the impact of the three main factors of sound wave intensity, sound wave frequency, and sound wave duration on the target's damage to the hearing threshold shift, so it is impossible to accurately evaluate the effect of sound wave weapons

Method used

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  • Calculation method and system for auditory threshold transfer after acoustic weapon strikes
  • Calculation method and system for auditory threshold transfer after acoustic weapon strikes
  • Calculation method and system for auditory threshold transfer after acoustic weapon strikes

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Embodiment Construction

[0030]The present invention will be further introduced below in conjunction with the drawings and specific embodiments.

[0031]CombineFigure 1-Figure 6, A calculation method for assessing hearing threshold shift after a sonic weapon strikes in an embodiment of the present invention aims to evaluate the influence of the sound intensity, frequency, and duration of sonic weapon on the situation of human hearing threshold shift, and calculate the size of hearing threshold shift under a certain parameter. The problem is transformed into a mathematical model of the influence of three continuous variables on a single dependent variable. Set the intensity (dB), frequency (Hz), and duration (s) of the sonic weapon as the variables SPL, freq, and t, respectively, and set the hearing threshold transition size of the dependent variable as F (dB). Use existing data: (SPLi,freqj,tk) (Where i, j, k = 1, 2, 3, 4, SPLi+1>SPLi, Freqj+1>freqj, Tk+1>tk) And the corresponding hearing threshold transfer si...

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Abstract

The invention provides a calculation method for evaluating the auditory threshold transfer after an acoustic weapon strikes. The size of an auditory threshold transfer value is calculated by calculating three main factors, namely the acoustic wave intensity, the acoustic wave frequency and the acoustic wave duration, causing damage to a target, of the acoustic weapon, so that the auditory threshold transfer caused by the acoustic wave striking is reasonably evaluated. The method comprises the following steps of converting the influence of three variables of the acoustic wave intensity, the acoustic wave frequency and the acoustic wave duration on a dependent variable of the auditory threshold transfer size into a mathematical model of the influence of the three continuous variables on thesingle dependent variable, and then carrying out fitting graphical solution. Through an graphical method provided by the invention, the auditory threshold transfer value F corresponding to any point with the parameters of (SPL', freq', t') in the range can be calculated, and the value range of the auditory threshold transfer value F and the parameter value range corresponding to one auditory threshold transfer value F can be observed intuitively, so that the auditory threshold transfer after the acoustic weapon strikes is reasonably evaluated.

Description

Technical field[0001]The invention belongs to the field of sonic weapon evaluation, in particular to a method and system for calculating hearing threshold shift after sonic weapon strikes.Background technique[0002]The impact of sonic weapons on human hearing is very obvious, and the long-term harm is mainly manifested in the permanent loss of human hearing threshold. As a non-lethal weapon, sonic weapons must be used to control the damage within a reasonable range. Assessing the degree of damage caused by sonic weapons is a key issue to prevent excessive damage to human hearing caused by sonic weapons.[0003]The main factors affecting hearing damage caused by noise weapons include: sound wave intensity, sound wave frequency, and sound wave duration. The degree of impact on hearing loss varies. Assessing the hearing loss caused by noise weapons is mainly manifested in the calculation of people exposed to different The size of the hearing threshold shift caused by the noise of sound wa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F41H13/00G06T11/20G06T17/00
CPCF41H13/0081G06T11/203G06T11/206G06T17/00
Inventor 周克栋缪桓举张俊斌赫雷罗建华陆野王希阔黄雪鹰
Owner NANJING UNIV OF SCI & TECH
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