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考察运动员在运动过程中的心脏搏动频率(即心率)及其变化细节,是指示运动负荷的主要指标和预防运动过程中心血管发生意外的主要判据。显然,由于平均心率仪不够细致,由收录机给出的心搏音响无法给出瞬时心率的数据,而用心电图机描记的方法又不能即时提供指导依据。 我们参考了国内外心率仪原理,设计了一台运动员瞬时心率仪,试图为教练员提供一种即时指导的手段。整机方框图如图1。
Investigating athletes’ heart beat frequency (ie heart rate) during exercise and details of their changes are the main indicators that indicate exercise load and prevent cardiovascular accidents during exercise. Obviously, since the average heart rate meter is not detailed enough, the heart rate given by the tape recorder can not give instantaneous heart rate data, and the method of electrocardiogram tracing can not provide immediate guidance. We refer to the principle of the heart rate meter at home and abroad, designed an athlete instantaneous heart rate meter, trying to provide coaches with a real-time guidance means. The whole block diagram shown in Figure 1.