扬声器阵列辐射声压级自动控制装置设计  

Design of automatic control device for sound pressure level of loudspeaker array

作　　者：张芳[1] 孙德玉[1] 张亮永 刘阳[1] 赵天青[1] ZHANG Fang;SUN De-yu;ZHANG Liang-yong;LIU Yang;ZHAO Tian-qing(Northwest Institute of Nuclear Technology,Xi’an 710024,Shaanxi,China)

机构地区：[1]西北核技术研究所

出　　处：《声学技术》2019年第6期640-643,共4页Technical Acoustics

摘　　要：针对强声波设备的使用安全性的问题,设计了一种强声波扬声器阵列辐射声压级自动控制装置,该装置通过控制功放驱动功率达到自动调节扬声器阵列输出声压级目的。硬件电路基于单片机ATmega48设计,单片机中固化了自动控制软件,结合目标距离实现对扬声器阵列辐射声压级的调节控制。将该装置加装于多个型号的强声波装置进行外场测试,结果表明,各扬声器阵列前方声压级均控制在安全范围内,因此可将其应用于强声波系统中避免强声波对非目标人员造成伤害。In order to solve the safety problems in using intense acoustic equipment,a special device that can automatically control the sound pressure level of loudspeaker array by adjusting the driving power is developed.The hardware circuit of the device is designed based on a single chip ATmega48,in which the control software is integrated.The device can adjust the sound pressure level according to the target distance.By installing the device in several types of intense acoustic equipment and testing the effect,it is shown that the sound pressure level in front of each loudspeaker array can be controlled within a safe level to avoid health lesion on non-target persons.

关 键 词：强声装置 扬声器阵列 声压级 自动控制 

分 类 号：TN912.2[电子电信—通信与信息系统]