一种手持式波形采集、存储及回放系统

The handheld waveform acquisition storage playback system

介绍了基于MSP430F5438单片机的波形采集、存储与回放系统的设计,包括信号调理电路、A/D采样、D/A变换和滤波器等电路设计。输入信号经NE5532运放构成的预处理电路进行调理后,送至处理器自带的高速A/D进行采样、量化后存储,然后经过D/A转换变为模拟信号,再经过有源低通滤波器消除噪声干扰,最后通过信号调理电路输出到示波器上显示。

This paper mainly introduces the design of waveform acquisition, storage and playback system based on MSP430F5438 single chip computer, including signal conditioning circuit, circuit designs of A/D sampling, D/A transform and filters. Through operational amplifier of NE5532, the input signal system is transferred to pretreatment circuits. After pretreatment circuits are adjusted and sent to the processor with high speed MD to be sampled, quantized and stored, they will be transferred into analog signals through D/A transform, with their noise interferences being eliminated by active low-pass filters and finally they are presented on oscilloscopes through signal conditioning circuit.