基于MSP430的微弱信号检测装置设计

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。%This essay based on TI company's ultra low power consumption microprocessor MSP430F149,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.