对心率的测定仍采用人工听诊器的方式，为了方便心率的采集，我们决定利用Mega16单片机为主芯片制造一简单易用易携的心率计，能够实现自动计录心跳次数并数字化形象直观的显示出来。为此，其中心率计特色功能的实现主要靠有效稳定的信号采集模式，我们通过查阅资料发现主要的心率采集有两种方法：通过一对红色发光二极管实现和通过压电陶瓷芯片实现。-Determination of heart rate is still using the manual stethoscope, in order to facilitate the acquisition of the heart rate, we decided to use the Mega16 microcontroller-based chip manufacturing a simple easy-to-use portable heart rate monitor, automatic meter recorded the number of beats and digital visual image display . To this end, the realization of the heart rate monitor features depends mainly on the effective and stable signal acquisition mode, we have access to information that the main heart rate collected in two ways: through a pair of red light-emitting diodes and through the piezoelectric ceramic chip to achieve.