【摘要】 目的研究并开发一种无创且连续的心率检测仪产品,以用于心血管病患者的日常监护。方法利用铺设在座椅上的压电薄膜传感器来提取人体腿部血管的搏动信号,从而推算心率值。采用STM32F411作为核心运算和控制单元实现低功耗程序设计,运用瞬态保护器件与嵌入式软件监控单元来全方位抑制静电放电所造成的干扰。结果在3种工作模式下,设备具有出色的能耗表现,且静电抗扰度满足YY 0505-2012标准的要求。结论该检测仪使用便捷,功耗超低,安全稳定,为家用心脏监护提供了一个实际可靠的解决方案。更多还原

【Abstract】 Objective To develop a noninvasive and continuous heart rate monitoring product, so as to monitor patients with cardiovascular diseases in their daily life. Methods Under the human thighs, the vascular pulsations were acquired to calculate the heart rate value by the piezoelectric film sensor which was placed on an office chair. As a core of operation and control, STM32F411 was used to achieve low power programming. Then, transient protection devices and embedded software monitoring module were designed to resist interference causing by the electrostatic discharge. Results In the three operation modes, the device has excellent performance of energy consumption and the ESD immunity meets the YY 0505-2012 standard requirements. Conclusion This monitor is easy to use, as well as safe, stable and energy-friendly. It provides a reliable and practical solution for cardiac monitoring at home.更多还原