利用炸点声音进行定位是目前热门的定位方法,为此设计了一个阵列式炸点声音定位系统,完善了所采用的阵列式炸点声音采集电路,包括大动态声音处理模块、多量程信号比较模块、数据处理模块等。通过Multisim仿真验证了阵列式炸点声音采集电路功能,其中大动态声音放大电路可以高倍数放大声音信号,将获取的微小信号放大成可处理的声音信号,多量程信号比较模块采用多阈值结构进行处理,比较后输出具有声音信息的逻辑信号。再通过单片机STM32连接上位机进行数据传输,采用MATLAB进行数据分析定位,实现对炸点位置的初步定位。

It is a popular positioning method to use blast sound for positioning.Therefore,an array blast sound positioning system is proposed and improves the array blast sound acquisition circuit used,including large dynamic sound processing module,multi-range signal comparison module,data processing module,etc.Multisim simulation verifies the function of the array type blast point sound acquisition circuit,in which the large dynamic sound amplification circuit can amplify the sound signal at a high magnification,amplify the acquired small signal into a processable sound signal,and the multi-range signal comparison module uses a multi-threshold structure for processing,comparing and outputting the logical signal with sound information.Then connect the microcontroller STM32 to the upper computer for data transmission,and use MATLAB for data analysis and positioning to achieve preliminary positioning of the explosion point position.