基于智能手机的校园环境噪声时空分布

Spatiotemporal distribution of environmental noises in CUMTB based on smart phone

针对依靠布设固定监测站的方式收集噪声信息需耗费大量人力、物力和财力,且其所采集数据仅能覆盖有限范围的问题,该文依照群智感知的思路,利用志愿者的智能手机作为信息采集终端,收集中国矿业大学(北京)校园内的噪声监测数据,使用克里金插值法生成噪声地图,在对校园进行功能区划分的基础上,分析校园环境噪声的空间分布差异和各功能区内噪声的时间变化规律。实验结果表明,该文所提方法能根据校园内人群的智能手机采集的数据,快速获取环境噪声的时空分布模式,进而推断时空差异的产生原因。

Abstract. Aiming at the problem that collecting noise information by monitoring stations at fixed loca tions requires a large amount of manpower, devices and financial resources, and the coverage area is limit- ed, the idea of participatory sensing was adopted by using volunteers＇smart phones as acquisition terminal and collecting the noise monitoring data at the campus of China University of Mining and Technology in Beijing. The Kriging interpolation method was used to generate noise map, the characteristics of spatial distribution of environmental noise and the change feature of the noises were analyzed in each functional areabased on the functional division of campus. The experiment results showed that the proposed method in this paper could quickly obtain the spatial and temporal distribution patterns of environmental noise ac cording to the data collected by the smart phones in the campus, and then infer the causes of spatial and temporal differences.