对于长期工作在水下的声纳检测系统，必须有可靠性高、功耗低的值班电路，文章设计了基于MSP430单片机的值班电路系统，提出了采用自适应notch滤波器实现数字滤波，完成值班电路对唤醒信号的检测，并详细介绍了自适应检测程序的流程、仿真过程和测试结果。%For a long-term working underwater sonar detection system, high-reliability low-power-consumption watch circuit is necessary. In this paper, a watch circuit system based on MSP430 is designed. Also, digital filtering using adaptive notch filter is proposed, and detection of wake-up signal with watch circuit is completed. The process of adaptive detective procedure, the simulation and the test results are particularly presented here.
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