摘要
水声应答机是水声定位系统中的关键部件。为提高水声应答机的检测性能和水下待机时间,采用单片机和数字信号处理器双核心嵌入式设计。以MSP430单片机为核心模块化设计值班电路,通过器件选型和电源管理降低功耗,利用VC5509A实现水声测距信号的Notch滤波和瞬时频率方差检测。经试验验证,水声应答机设计功能完备,待机时间长,可靠检测应答控制指令,实现对水声测距信号的快速应答。在8万次应答测距后,待机时间大于50d,满足设计要求。
Acoustic responder is a key component of acoustic locating system.MCU embedded DSP has adopted in design of acoustic responder in order to enhance responder’s detecting performance and standby time underwater.A watching circuit is designed blocking with MSP430.Power consumption decreases by selecting apparatus and power supply management.VC5509Ais used to implement Notch filter and variance-of-instantaneous-frequency detecting for acoustic signal.Acoustic responder is validated to have full performance and long standby time.It can detect and respond controlling structions and respond acoustic ranging signal rapidly.The system has more than 50days of standby time after 80kilo times of ranging and meets the design requirements.
出处
《电子测量技术》
2013年第8期89-92,共4页
Electronic Measurement Technology
