| 采用ARM与DDS技术的水声信号发射机 |
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| 引用本文： | 张小蓟,张宣平,乔晓芳.采用ARM与DDS技术的水声信号发射机[J].电声技术,2007,31(11):38-40. |
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| 作者姓名： | 张小蓟 张宣平 乔晓芳 |
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| 作者单位： | 西北工业大学,航海学院,陕西,西安,710072 |
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| 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。
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| 关 键 词： | 水声信号 ARM 直接数字频率合成器 发射机 |
| 文章编号： | 1002-8684（2007）11-0038-03 |
| 修稿时间： | 2007-07-27 |
Acoustical Signal Transmitter Based on ARM and DDS Techniques |
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| ZHANG Xiao-ji,ZHANG Xuan-ping,QIAO Xiao-fang.Acoustical Signal Transmitter Based on ARM and DDS Techniques[J].Audio Engineering,2007,31(11):38-40. |
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| Authors: | ZHANG Xiao-ji ZHANG Xuan-ping QIAO Xiao-fang |
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| Abstract: | 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. |
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| Keywords: | underwater acoustical signal ARM DDS transmitter |
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