基于51单片机脉搏仪的设计与分析测试

The Design and Analysis of Pulse Instrument Based on 51 Single Chip Microcomputer

脉搏仪的应用在医疗和居家生活中日渐广泛,作为衡量健康指数的基本指标,脉搏测量的准确性是脉搏仪的重要特征。本设计以STC89C52单片机作为主控芯片,通过键盘设置上下限,将测量到的脉搏信号通过红外传感器及附加放大整形电路转换为电信号,反馈给主控芯片,通过LCD1602显示屏显示脉搏次数。测量分析显示,该设计在一定程度上实现了脉搏的测量,且准确迅速、数据便于记录,同时也实现了脉搏值超过上(下)限时的报警提示。

The application of pulse instrument in medical and home life is increasingly wide, as a measure of the basic indicators of health index, the accuracy of the pulse measurement is an important feature of the pulse instrument. This design uses STC89C52 single chip microcomputer as the main control chip, the upper and lower limits of the keyboard.is.set. The measured pulse signal is converted to electric signal through infrared sensor and additional amplification shaping circuit, and feedback to the main control chip, and the pulse frequency is displayed by.the LCD1602 display screen.Measurement analysis shows that the design to a certain extent, to achieve the pulse of the measurement, and accurate and rapid, easy to record data. Also achieved a pulse value over the upper（lower）limit, the buzzer will alarm.