采用ARM与DDS技术的水声信号发射机  

Acoustical Signal Transmitter Based on ARM and DDS Techniques

作　　者：张小蓟[1] 张宣平[1] 乔晓芳[1] 

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《电声技术》2007年第11期38-40,共3页Audio Engineering

摘　　要：介绍了采用ARM7芯片LPC2131为主控与DDS频率合成芯片AD9833组成的水声信号发射机,根据LPC2131和AD9833芯片的功能与特点,从硬件电路构成和软件设计探讨实现了各类水声调制信号的输出功能,结合ARM技术并通过SPI串行通信协议实现频率信号产生,完成水声通信系统中的编码信号与调制信号的合成,并可通过计算机串口实现编码变换。Based on ARM（Advanced RISC Machine） and DDS（Direct Digital Frequency Synthesis）, an acoustic signal transmitter is introduced. Philips ARM7 chip LPC2131 is used as the CPU for control, and DDS chip AD9833 is used to output the frequency which the system requires. Various kinds of underwater acoustic modulating and coding signals can be outputted from the transmitter, SPI（Serial Peripheral Interface） technique is used to generate the frequency signal, and the coding signal is exchanged through the computer serial port.

关 键 词：水声信号 ARM 直接数字频率合成器 发射机 

分 类 号：TN912[电子电信—通信与信息系统]