脉搏信号检测仪的设计与实现

Design and Implementation of the Detector for Beating of Heart

根据人体脉搏信号特征,提出了一种基于透射式光电效应的脉搏检测系统。该系统以AT89S51微处理器为核心,基于光电脉搏传感器HKG-07A并配合外围芯片构成硬件结构。AT89S51用来实现脉搏数据的处理,HKG-07A用来完成人体的脉搏信号采集和调理,控制液晶芯片1602和语音芯片ISD1420分别用来显示脉搏频率和播报脉博数。测试结果表明,该系统能够实时、准确地播报当前的脉搏数;当人体脉搏次数低于50次/min或高于120次/min时,语音提示报警信息。

In accordance with the characteristics of human pulses, the detecting system based on transmission type photoelectric effect for beating of heart is proposed. With AT89S51 microprocessor as kernel, the system hardware is structured based on photoelectric pulse sensor HKG-07A and composed of peripheral chips. Data processing of human pulses is implemented by AT89S51, and signal acquisition and conditioning of human pulses are conducted by HKG-07A, then the LCD chip 1602 and voice chip ISD1420 are controlled to display and broadcast the beatings of heart. The test result shows that the system precisely broadcasts current numbers of human pulses in real time, and gives audio alarm information when the beating numbers are below 50 or above 120 per minute.