基于MEMS声传感器阵列的车辆鸣笛声抓拍系统设计与实现  

Design and Implementation of Vehicle Horn Sound Capturing System Based on MEMS Acoustic Sensor Array

作　　者：张瑞[1] 史故臣 梁远 王洋洋 伍一帆 杨天园 苏涛[3] ZHANG Rui;SHI Guchen;LIANG Yuan;WANG Yangyang;WU Yifan;YANG Tianyuan;SU Tao(College of Information Science and Technology,Zhejiang Shuren University,Hangzhou 310015,China;Joyware Electronics Co.,Ltd,Hangzhou 310012,China;Xidian University,School of Electronic Engineering,Xi’an 710071,China)

机构地区：[1]浙江树人大学信息科技学院,杭州310015 [2]杭州中威电子股份有限公司,杭州310012 [3]西安电子科技大学电子工程学院,西安710071

出　　处：《传感技术学报》2020年第4期612-620,共9页Chinese Journal of Sensors and Actuators

基　　金：浙江省公益性技术应用研究计划项目(LGG18F010008,LGF18F010005);浙江省教育厅一般科研项目(Y201636853)。

摘　　要：基于MEMS(Micro Electrical Mechanical System)声传感器阵列及光学相机,设计并实现了车辆鸣笛声抓拍系统。结合车辆鸣笛声的时域与频域特点实现鸣笛声的识别,结合最小化最大旁瓣级原则给出生成声传感器阵列的具体方式,结合波束形成技术及互谱矩阵实现区域内声源波达方向估计。以可编程逻辑门阵列(Field Programmable Gate Array,FPGA)作为算法实现平台,完成数据采集与数据处理模块设计,结合工业计算机及光学相机,实现车辆鸣笛声抓拍。通过测试,验证了所设计的系统对鸣笛声抓拍的有效性。Based on MEMS(Micro Electrical Mechanical System)acoustic sensors array and optical camera,a car horn capturing system is designed and implemented.Using the characteristics of time and frequency domain of car horn,the recognition of car horn is realized.A specific way to generate acoustic sensor array is given by minimizing the maximum sidelobe level.The direction of arrival(DOA)of sound sources in the region is estimated by combining beamforming and cross-spectral matrix technologies.Using FPGA(Field Programmable Gate Array)as the algorithm implementation platform,the data acquisition and processing modules are completed,and the industrial computer and optical camera are combined to realize the car horn capture.The validity of the system for snapping car horn is verified by experimental results.

关 键 词：声学 波达角估计 传声器阵列 系统设计 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]