摘要
文章阐述了家用脉搏测试仪在现实生活中的意义,提出了系统的设计思路及合理的设计方案,并说明了该系统的结构和功能,对其设计原理做了详尽的分析。设计系统首先利用传感器对脉搏信号进行采集,然后对采集信号进行放大、滤波、整形,接着用计数显示模块将脉搏跳动次数显示出来。同时,用555集成定时器模块控制计数器的计数时间。该仪器具有操作简易方便,成本低廉、低电压驱动、低功耗节能等优点。
This paper describes the significance of household pulse tester in real life and puts forward the system design ideas and the rational design scheme. The structure and functions of the system are described and the design principles are analyzed in detail. The designed system firstly collects the pulse signal by sensor, then the collected signal is amplified, filtered, shaped, and finally the pulse beat number will be displayed by a counting display module. Meanwhile, the instrument uses 555 integrated timer module to control the counting time. The instrument features simple and convenient operation with low cost, low-voltage drive, low power consumption and energy saving.
出处
《电子技术（上海）》
2013年第9期86-88,69,共4页
Electronic Technology
