摘要
主要介绍了LCD液晶数字显示红外脉搏表硬件设计。该脉搏表使用光电传感器和指端光电容积法检测血流,采集到的脉搏波信号经过放大电路放大,再经过电压比较器输出逻辑信号,单片机EM73461A通过对此逻辑信号的处理实现计算测量功能。此脉搏计还包括数字时钟显示和计时/倒计时功能。
In this paper, hardware design of LCD display infrared pulsemeter is mainly described. Photoelectric sensor has been applied forthepulsemeter. Themethod of fmger end photo electricity volume is used for detecting blood flow. Pulse wave signal has been amplify through the voltage amplification circuit, then comparator compares the input signal with the reference voltage and produces the logic signal on thefan-out. EM73461A microcomputer is used for calculating the number of heart beating in one minute. The pulsemeter also includes the function digital clock and count up/down timer.
出处
《太原科技》
2006年第12期79-80,共2页
Taiyuan Science and Technology
