实时主动声定位系统设计

The design of real-time active acoustic location system

针对在军事演习或爆炸实验中对冲击波超压传感器位置的精确定位,设计了一种实时主动声定位系统。该系统由声信号发射系统、声信号接收处理系统和无线监控终端系统三部分组成。声信号发射系统与无线监控终端以单片机STC12C5A60S2作为核心控制器,接收处理系统以ARM9系列的S3C2440作为核心控制器。发射系统发射四种已知频率的声信号,接收处理系统接收并处理收到的四种声信号,然后把处理结果反馈到无线监控终端。通过实验表明,该系统在一定条件下,能够稳定地发射、接收并处理声信号,达到实时定位目标,并在200 m范围内将定位误差控制在厘米级内。

A design scheme of real-time active acoustic positioning system is proposed, aiming at the accurate positioning of shock wave overpressure sensor position in military exercise or explosion experiment. The system includes sound signal transmission system, acoustic signal receiving and processing system and wireless monitoring terminal system. Sound signal transmission system and wireless monitoring terminal take singlechip STC12 C5 A60 S2 as the core controller, and receiving and processing system takes ARM9 series S3 C2440 as the core controller. The transmitting system emits four acoustic signals of known frequency, the receiving and processing system receives and processes the four kinds of sound signals, and then feeds the processing result back to the wireless monitoring terminal. Experiments show that the system can transmit, receive and process the acoustic signal under certain conditions, reach the real-time positioning target, and control the positioning error in the centimeter range within 200 meters.