二是心率处理电路：选用电压比较器提取一个心电周期中的R波，检测上升沿个数以记录心率。
The second one is the circuit which deals with the heart rate, it selects th voltage comparator to collect the QRS wave in one cycle, and detect the rising edge to record the heart rate.
二是心率处理电路：选用电压比较器提取一个心电周期中的R波，检测上升沿个数以记录心率。
The second one is the circuit which deals with the heart rate, it selects th voltage comparator to collect the QRS wave in one cycle, and detect the rising edge to record the heart rate.
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