基于光电对射管的健身器心率测量系统设计

Design of heartbeat signal measurement system of gymnastic device based on photoelectric correlated cell

本文介绍了基于光电对射管的健身器心率测量的硬件及软件系统设计。通过获取位于光电对射管中间的人耳垂部分的血液浓度的变化信号,经过滤波放大等信号调理,使心率信号转化为单片机可直接计量的方波信号。本文介绍的心率测量系统已在作者研制的健身器系统中得到了大量的应用,应用效果理想。

The hardware and software of eardiotach ometer of gymnastic device which based on photoelectric correlated cell is introduced in this paper. By getting the variable signal coming from the variable blood densiuty of the part of earlap which between the photoelectric cell, and being modified through the circuits of filter and magnify, the heartbeat signals was be changed to square waves which could be measured to a chip of MCU. The measurement system has been widely used in our gymnastic devices,and it is shown effective.