基于FPGA的主动声源控制系统

Active Sound Source Control System Based on FPGA

随着水下潜艇隐身技术的迅速发展,水面舰艇面临的挑战日益严峻,对水下目标的主动探测提出了新的要求和挑战。将爆炸声源作为发射声源,设计了一套基于FPGA的主动声源控制系统。该系统以FPGA作为控制核心,采用RS232串口通信,收到上位机发送的起爆指令后进行引爆。与传统的主动声纳发射换能器相比,除了成本、功耗与体积降低以外,声源级更高,具有爆炸声源的全指向性,更便于小平台搭载。仿真与水下实验结果表明,该系统在接收到上位机发送的起爆指令后可实现水下爆炸声源有序可控的引爆,同时通过MEMS矢量水听器进行爆炸声源数据采集,经计算可得爆炸声源级为193.93 dB。

With the rapid development of stealth technology of underwater submarines,the challenges faced by surface ships are becoming increasingly severe,and new requirements and challenges are put forward for the active detection of underwater targets.Using the explosion sound source as the emission sound source,a set of active sound source control system based on FPGA is designed.The system takes the FPGA as the control core,adopts RS232 serial port communication,and detonates after receiving the detonation command sent by the host computer.Compared with the traditional active sonar emission transducer,in addition to the cost,power consumption and volume reduction,the sound source level is higher,with the omnidirectionality of the explosion sound source,the designed system is more conven-ient for small platforms to carry.Simulation and underwater experimental results show that the system can realize the orderly and controlla-ble detonation of the underwater explosion sound source after receiving the detonation command sent by the host computer,and the data ac-quisition of explosive sound source by MEMS vector hydrophone,and the explosion sound source level can be calculated to be 193.93 dB.