将数字式电子脉搏表压在腕部的桡骨动脉上,并施以一定的压力,它便能立即显示出被测者的心跳频率。它的出现对于自我保健和提高诊病效率具有重要的意义。图1是用脉搏数字表测量心率的示意图。图2是数字表的电路框图。接通电源后,将压电传感器产生的电信号加到可调增益放大器。当其输出 The digital electronic pulse gauge pressure in the wrist radial artery, and exert a certain pressure, it will be able to immediately show the measured heart rate. Its appearance is of great importance to self-care and improving the efficiency of diagnosis and treatment. Figure 1 is a schematic diagram of heart rate measured by the pulse table. Figure 2 is a circuit diagram of the digital table. After turning on the power, add the electric signal that the piezoelectric sensor produces to the adjustable gain amplifier. When it is output