摘要
研制一种基于通用串行总线的高速脉搏信号实时检测系统并进行了硬件系统和应用软件的设计,描述了装置设计中各个细节的总体思路。选用基于聚偏氟乙烯压电薄膜的集成化脉搏传感器把待检测对象的脉搏跳动转变成可处理的电信号,经过同相放大电路将传感器的微弱信号放大。放大后的信号经集成的混合信号系统级芯片C8051F130单片机模数转换后变成数字信号,然后由该单片机通过通用串行总线实现与计算机的通信,把脉搏信号送入计算机显示记录存储和处理。该系统具有结构简单、抗干扰能力强、成本较低、应用价值高等优点,可以方便地实现脉搏信号的快速采集和存储。
An universal serial bus （USB）-based high-speed real-time pulse signal detecting system is developed. The hardware and application software of the system is presented. The integrated polyvinylidene difluoride （PVDF） piezoelectric pulse sensor is used to pick-up the pulse signals of examined person and turn to the electric signal under processing. Because the signal is very weak, only after passing through the enlargement can the regular pulse profile be allowed to be obtained. The in-phase amplifier circuit is used to magnify the weak signal from the sensor. The magnified pulse signal is converted digital pulse signal through system-on-chip single-chip microcomputer C8051F130. The digitalized pulse signal is delivered to personal computer under USB interface protocol. The pulse signal is then shown, recorded, saved and processed through computer software. This inspecting system for pulse signal has many advantages, such as its structure is simple, it works steadily and reliably, its low cost, high application value and it can also realize rapid collection and storage of pulse signal.
出处
《中国组织工程研究与临床康复》
CAS
CSCD
北大核心
2008年第39期7653-7656,共4页
Journal of Clinical Rehabilitative Tissue Engineering Research
基金
江苏省基础研究计划(自然科学基金)资助(BK2007601)
江苏省"青蓝工程"资助
江苏省高校自然科学基础研究项目资助~~
