Page 45 - 《应用声学》2019年第6期
P. 45

第 38 卷 第 6 期                                                                       Vol. 38, No. 6
             2019 年 11 月                         Journal of Applied Acoustics                 November, 2019

             ⋄ 研究报告 ⋄



                    基于大能量火花放电的枪声模拟系统设计                                                             ∗






                             王 龙     †  谷平反 王聪丽 李书日 张财谦 崔小叶


                                            (中国人民武装警察部队士官学校         杭州   311400)

                摘要 为准确模拟某型枪械实弹射击枪声，设计了一种基于大能量火花放电的枪声模拟系统，理论分析和仿
                真验证了系统工作原理，并对所模拟枪声的声级以及时域和频域特性进行了试验测试。仿真和测试结果表明：
                点火电容放电所辐射的电场击穿高能电极空气间隙，可有效控制储能电容组火花放电模拟枪声；模拟与真实
                枪声的声级误差约为 −2.1∼5.8 dB(A)，标准差为 1.974 dB(A)，模拟与真实枪声的时域信号随时间增加均以
                指数形式迅速减小且频谱分布规律一致；模拟与真实枪声信号在时域进行相关运算后存在着明显的相关峰，
                二者有较好的相似性。
                关键词     枪声模拟，火花放电，声级，频谱，时域相关
                中图法分类号: TN973.2           文献标识码: A          文章编号: 1000-310X(2019)06-0947-07
                DOI: 10.11684/j.issn.1000-310X.2019.06.006




                      Design of simulated gun-shot sound system based on large energy
                                                    spark discharge



                   WANG Long GU Pingfan        WANG Congli     LI Shuri  ZHANG Caiqian      CUI Xiaoye


                                  (Non-Commissioned Officers School of CAPF, Hangzhou 311400, China)

                 Abstract  In order to accurately simulate the shot sound of the gun firing, a simulated shot sound system
                 based on large energy spark discharge was designed. The operational principle of the system is theoretically
                 analyzed and simulation verified, then the sound level, time-domain and frequency-domain characteristics of
                 the simulated gunshot sound are tested. The simulation and test results show that the electric field radiated
                 by ignition capacitor discharge can break through the air gap of high energy electrode, then it can effectively
                 control the spark discharge of energy storage capacitors which simulating gunshot sound. The error of sound
                 level between simulated and real gunshot is −2.1–5.8 dB(A), and the standard deviation is 1.974 dB(A). The
                 time-domain signals of simulated and real gunshot decrease exponentially with time increasing and the spectrum
                 distribution of the two signals is consistent. There are obvious correlation peaks in the correlation calculation
                 of the two signals in time domain, and the simulated gunshot sound is basically consistent with the real gunshot
                 sound.
                 Key words   Gunshot sound simulation, Spark discharge, Sound level, Spectrum, Correlation in time domain




             2019-03-05 收稿; 2019-07-01 定稿
             武警士官学校科研基金资助项目 (201801)
             ∗
             作者简介: 王龙 (1985- ), 男, 山东临沂人, 博士, 研究方向: 光电对抗。
             † 通讯作者 E-mail: wanglong4800533@163.com
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