【摘要】本文基于超低功耗微处理器MSP430F149设计了一套微弱信号检测装置，用于检测强噪声背景下已知频率正弦波信号的幅度值。该系统由加法器、纯电阻分压网络、微弱信号检测电路和显示电路组成。经测试，该装置可较好满足满足微弱信号检测的精度要求。扇贝笼
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【关键词】微弱信号检测;MSP430;强噪声
Abstract：保偏光纤耦合器This essay based on TI company’s ultra low power consumption microprocessor MSP430F149scr-035，designed a set of weak signal detection device，used to detect the known frequency signals under strong background noise amplitude value of the sine wave signal.The system consists of adder，partial pressure of pure resistance network，weak signal detection circuit and display circuit.Through testing the device can good meet the requirements of weak signal detection accuracy.
Keywordsrj45防水接头：weak signal detection;MSP430;strong noise
微弱信号检测是一门新兴的技术学科，它利用电子学、信息论和物理学的方法，分析噪声产 生的原因和规律，研究被测信号的特征，检测出并恢复被背景噪声掩盖的微弱信号。微弱信号检测的目标是从强噪声中提取有用信号，任务是研究微弱信号检测的理论、探索新方法和新技术，从而将其应用于各个学科领域当中。常规的微弱信号检测方法主要包括时域方法和时频方法[1]。
