ADC0809在两路数据采集系统中的应用

摘要

脉搏传感器和心音传感器获取的模拟信号，只有转换成数字信号，才能让单片机进行处理，以及PC机进行后续的波形显示和分析。采用ADC0809中断查询的方法，结合心音、脉搏信号采集系统中两路数据的模数转换实验，得到了稳定、可靠的心音、脉搏信号的数字量。%Analog signals which gain from the pulse sensor and the heart sounds sensor, only are converted into the digital signals, it can let the SCM process, as well as PC displays and analyzes the waveform. This article uses the way of ADC0809's interruption inquiry, combines with the experiment of two channel data's analog-digital conversion in SCM front-end of heart sound, pulse acquisiton system, then this system obtains stable, reliable digital signals of heart sound and pulse.