第 I 页 电子脉搏计数器的设计摘 要现如今，脉搏的检测在生活中越来越普遍，普通人自己在家就能测量脉搏，脉搏的测量对应诊断心脑血管疾病有很大的好处。如今电子脉搏计数器逐步取代传统脉搏诊断方法，可以减轻医疗工作者的精神压力，降低医疗工作者由于某些原因所导致的错误诊断，提高医疗工作者及患者的“幸福感”。本设计为一个电子脉搏计数器系统，利用一个定时器、一个信号整形放大电路和一个能够将脉搏次数显示出来的由计数器、译码器、数码管构成的显示电路，实现了对人体脉搏的电子测量。在明确设计目的、设计背景的基础上，结合电子脉搏计数器系统的发展前景和国内外现状，本次方案搭建了数字脉搏计数器的框架，明确了系统工作原理，着重分析单稳态触发工作原理，重点通过传感器电路、整形放大电路、倍频电路、定时电路、计数译码显示电路完成了整体电路设计，并进行了仿真结果分析。在此基础上，硬件电路连接后经过电路测试、PCB 板测试证明电子脉搏计数器系统能够满足预期发挥作用，具有很强的实用性，为预防和治疗疾病提供参考，有益于公共卫生事业的发展。【关键词】电子脉搏计数器，定时器，信号整形放大，数码管 第 II 页 Design of electronic pulse counterAbstractNowadays, the detection of pulse is becoming more and more common in life. Ordinary people can measure the pulse at home by themselves. The measurement of pulse has great benefits in diagnosing cardiovascular and cerebrovascular diseases. Today, electronic pulse counters gradually replace traditional pulse diagnostic methods, which can reduce the mental stress of medical workers, reduce the misdiagnosis caused by medical workers for certain reasons, and improve the "happiness" of medical workers and patients. Originally designed as an electronic pulse counter system, using a timer, a signal shaping amplifier circuit, and a display circuit composed of a counter, a decoder, and a digital tube that can display the pulse number, the electronic measurement of the human pulse is realized. .Based on a clear design purpose and design background,...
