新型野外救援的低频声音搜救装置设计  

Design of a new low frequency acoustic search and rescue device for field rescue

作　　者：崔丽兰 田杨萌[1] 王彩霞[1] 刘琳 张潇艺 CUI Lilan;TIAN Yangmeng;WANG Caixia;LIU Lin;ZHANG Xiaoyi(Beijing Information Science and Technology University,Beijing 100192,China)

机构地区：[1]北京信息科技大学,北京100192

出　　处：《电子设计工程》2021年第22期150-154,共5页Electronic Design Engineering

摘　　要：为了提高野外救援效率,设计一种新型低频声音搜救装置。该搜救装置包括声源信号主动发声装置和声源定位装置两部分,第一部分的声源信号主动发声装置可以发出频段为2~100 Hz的声波信号,并通过编码使该声波信号携带求救者的身份信息;第二部分的声源定位装置由声传感器阵列、信号处理模块和声定位算法组成,声传感器阵列接收到特定频段的声波信号后,对接收到的声波信号使用基于ARMCortex-M4内核的STM32系列单片机进行信号处理,再利用波束形成算法(BF算法)定位技术确定求救者的声源位置,并获取其身份信息。在视野可见度低和搜索范围无法利用北斗、GPS定位时,利用该救援方式可以更有效地开展救援工作。In order to improve the efficiency of field rescue,a new low frequency sound search and rescue device is designed.The first part of the sound source signal active sound generated device can send out the frequency band of 2~100 Hz acoustic signal,and through coding to make the acoustic signal carry the identity information of the caller;the second part of the sound source localization device is composed of acoustic sensor array,signal processing module and acoustic positioning algorithm.The acoustic sensor array receives the acoustic signal of a specific frequency band.The received acoustic signal is processed by STM32 series single chip microcomputer based on ARM CortexM4 core,and then the localization of the sound source of the caller is determined by using the localization technology of beamforming algorithm(BF algorithm),and the identity information of the caller is obtained.When the visibility of vision is low and the search range is unable to use Beidou and GPS positioning,this rescue method can be more effective to carry out rescue work.

关 键 词：声源定位 波束形成 野外救援 编码 

分 类 号：TN91[电子电信—通信与信息系统]