Hospital acoustic environment simulation system based on social force model

Abstract

The invention discloses a hospital acoustic environment simulation system based on a social force model. The system comprises a behavioral model and an acoustic model, wherein the behavioral model comprises a sound production spacing module, a duration module, a sound production position module and a sound production intensity module; the acoustic model comprises an outdoor noise module and an indoor sound field module; the system can defines each room in a hospital as an interactive Agent; when a certain sound source in the Agent is activated, firstly the sound production spacing module, the duration module, the sound production position module and the sound production intensity module in the behavioral model constitute basic attributes of a sound source sound production behavior; then sound transmission is simulated through the outdoor noise module and the indoor sound field module in the acoustic model, so that the initial sound pressure level in a receiving point position is obtained through computation; then the final sound pressure level in the receiving point position is determined by comparing the initial sound pressure level with a background noise sound pressure level and judging the quantity of sound production sound sources at identical time; finally, the plane distribution situation of an indoor sound field is computed through an interpolation method according to plane positions of all receiving points in the Agent and the final sound pressure levels of the receiving points.

Description

technical field [0001] The invention belongs to the technical field of acoustics, in particular to an acoustic environment simulation system based on a social force model applied to a hospital. Background technique [0002] The impact of noise on people's psychology and physiology has been discussed for many years, and it has a considerable adverse effect on the comfort and rehabilitation of patients. According to many measured results, the actual noise value of hospitals in various countries is usually 15 decibels higher than the recommended value of the World Health Organization (WHO). However, previous studies only simply considered limited or even wrong acoustic parameters. Therefore, hospital acoustics is one of the research hotspots in the field of acoustics and medicine in Europe and America in recent years. [0003] Chinese patent 201110090467.6 discloses "abnormal cluster behavior detection method based on improved social force model"; Chinese patent 201110309444.X...

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Problems solved by technology

[0003] Chinese patent 201110090467.6 discloses "abnormal cluster behavior detection method based on improved social force model"; Chinese patent 201110309444.X discloses "monitoring system based on social force model"; Crowd Abnormal Event Detection Method”; although the above patents are based on the social force model, none of them involve the hospital acoustic environment simulation system

Chinese patent CN103440411A discloses "traffic noise pollution model based on exp

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